CN201048275Y - Household electrical appliance protector for preventing lighting strike and overvoltage - Google Patents

Abstract

The utility model discloses an appliance protector which prevents lighting strike and supervoltage. The appearance of the protector is a box, the front face of the box is provided with a power switch and five indicator lights; the back face of the box is provided with a power output socket, a protective tube, a lightningproof filter element, an antenna input/output faucet, an earth wire of casing, and a power cord. The box is internally provided with a circuit board which comprises a mains input interface, an antenna input circuit, a lightningproof filter, a power rectification clean circuit and a working status display circuit, wherein, the mains input interface and the antenna input circuit are directly connected to the lightningproof filter, and the lightning proof filter is respectively connected with an antenna output circuit, the power rectification clean circuit, a power sampling circuit and a power output circuit; the power rectification clean circuit is also connected with the working status display circuit; the power sampling circuit is connected with a power sense controller, a delay circuit, a sense control executive circuit and the power output circuit in sequence. The protector can effectively protect the security of appliances in time when suffering the lighting strike and supervoltage, thereby being suitable for being used in common families.

Description

A kind of anti-lightning strike, superpressure preventing man non-electricity protector

Technical field

The utility model relates to the emergency protective circuit device, in particular to tame non-electricity protector anti-lightning strike, superpressure preventing.

Background technology

As everyone knows, household electrical appliance can only be worked in the scope of normal voltage.When voltage is higher or lower than the normal voltage scope, perhaps be struck by lightning, all can influence the operate as normal of household electrical appliances, even cause electrical equipment to damage.In order to protect household electrical appliance; people have designed many protectors; having of correlation technique application Chinese patent: CN86206560 number " household electrical appliance automatic multifunctional protector "; CN88205938.6 number " full-automatic multi-functional Protector for electric appliance "; CN89218628.3 number " household electrical appliance combination protector "; CN90210688.0 number " fully-automatic household electrical equipment concentrated protection device "; CN92210477.8 number " multifunctional electric appliance protector "; CN94201938.5 number " protector for household electrical appliances "; number 99221165.4 " household electrical appliance overpressure protector "; number 200420003797.2 " household electrical appliance automatic protector " etc.; these patented technologies all have the certain protection effect to household electrical appliances; but people still constantly bring forth new ideas, and design more effective; sensitiveer tame non-electricity protector.

Summary of the invention

The purpose of this utility model provides a kind of anti-lightning strike, superpressure preventing man non-electricity protector, and it can prevent in time that voltage superelevation or ultralow and thunderbolt to the infringement of household electrical appliances, ensureing that household electrical appliances are in safe operating voltage range all the time.

Anti-lightning strike, superpressure preventing man non-electricity protector profile that the designer provides are cuboid boxes, and there are mains switch and 5 indicator lights in its front; Its back side is equipped with power output socket, protective tube, lightning protection filter element, antenna input and output socket, earthing of casing line, bores a hole with the power line of plug in addition; The circuit board of being made up of power input interface, antenna input circuit, lightning protection filter, power rectifier clean circuit, operating state display circuit is installed in the box, wherein the lightning protection filter is the core component of work, power input interface and antenna input circuit are directly connected in the lightning protection filter, and the lightning protection filter connects antenna output circuit, power rectifier clean circuit, power supply sample circuit and power output circuit again respectively; The power rectifier clean circuit also is connected with the operating state display circuit; Be connected with power supply between power supply sample circuit and the power output circuit in turn and detect controller, delay circuit, detection control executive circuit.

5 indicator lights in above-mentioned protector front are respectively that aerial signal indicator light, supply voltage are crossed low indicator light, detected to postpone to hold concurrently and protect indicator light, voltage power supply indicator light, fault display lamp, and it is the LED lamp that these indicator lights all adopt light-emitting diode.

That the utility model provides is anti-lightning strike, the use step of the tame non-electricity protector of superpressure preventing is: the attaching plug with household electrical appliance inserts in the power output socket at the protector back side earlier; the TV set aerial plug is inserted in the antenna output interface at the protector back side; signal antenna inserts in the antenna input interface; attaching plug is inserted in the supply socket; open the mains switch in protector front then, protector is promptly started working.

Its operation principle is: when civil power during in the normal voltage scope, power supply detects 2 pin voltage ratios, the 3 pin voltage height of controller U2, and 1 pin is a low level, and the Q2C in the delay circuit is high level very, the Q3 conducting; C is low level very, the Q4 conducting; C is high level very, the Q5 conducting; C is low level very, and relay coil has electric current to pass through, relay closes, output voltage.When voltage was lower than normal voltage, 2 pin voltage ratios, the 3 pin voltages that power supply detects controller U2 were low, and 1 pin is a high level, and the Q2C in the delay circuit is low level very, and Q3 ends, and Q4 ends, and Q5 ends; Relay disconnects, not output voltage.When voltage was higher than normal voltage, power supply detected 2 pin voltage ratios, the 3 pin voltage height of controller U2, and 1 pin is a low level, while 6 pin voltage ratios, 5 pin voltage height, and 7 pin are low level, and Q3 ends, and Q4 ends, and Q5 ends; Relay disconnects, not output voltage.In order to make output voltage not be in acute on off operating mode, R6 and C8 form delay circuit, make voltage output that certain delay be arranged, and avoid electrical equipment to cause crashing or work undesired.If thunder and lightning seals in electrical network or antenna, when the voltage increases at RF two ends arrived dangerous voltage, the pole plate of RF produced high-voltage power; For safety utilization of electric power, the parallel connection of RF two ends pressure cell, make integrated circuit work reach guarantee.When design, in order to make the user easy for operation, consumable accessory is designed to outer device, and the user can change element easily according to the demonstration of malfunction indicator lamp.

Anti-lightning strike, superpressure preventing man non-electricity protector of the present utility model; can protect the safety of household electrical appliance in the voltage superelevation, when ultralow or thunder and lightning is invaded timely and effectively; after voltage is normally delayed, restore electricity, ensure that household electrical appliances are in the state of trouble free service all the time, be fit to average family and use.

Description of drawings

Accompanying drawing 1 is of the present utility model anti-lightning strike; the front design drawing of superpressure preventing man non-electricity protector; Fig. 2 is the back side design drawing of tame non-electricity protector; Fig. 3 is tame non-electricity protector circuit theory diagrams; Fig. 4 is tame non-electricity protector internal circuit diagram; Fig. 5 is tame non-electricity protector lightning protection filter circuits figure; Fig. 6 is power rectifier clean circuit figure; Fig. 7 is operating state display circuit figure; Fig. 8 is antenna input circuit figure; Fig. 9 is power supply sample circuit figure, and Figure 10 detects control block wiring diagram for power supply, and Figure 11 is delay circuit figure; Figure 12 is for detecting control executive circuit figure, and Figure 13 is power output circuit figure.1 is power input interface among the figure, and 2 are the lightning protection filter, and 3 is the power rectifier clean circuit; 4 is the operating state display circuit; 5 is antenna input circuit, and 6 is the power supply sample circuit, and 7 are power supply detection controller; 8 is delay circuit; 9 for detecting the control executive circuit, and 10 is power output circuit, and 11 is the antenna output interface; 12 is mains switch; 13 is the aerial signal indicator light, and 14 cross low indicator light for supply voltage, and 15 postpone to hold concurrently the protection indicator light for detecting; 16 is the voltage power supply indicator light; 17 is the fault display lamp, and 18 is power output socket, and 19 is protective tube; 20 are the lightning protection filter element; 21 are antenna input socket, and 22 is the antenna output socket, and 23 are earthing of casing line; 24 power lines for the band plug, 25 is the protector nameplate.

Embodiment

Anti-lightning strike, a superpressure preventing man non-electricity protector as accompanying drawing 1-4, its profile is a cuboid box, and its front has mains switch 12 and aerial signal indicator light 13, supply voltage to cross low indicator light 14, detects the double protection of delay indicator light 15, voltage power supply indicator light 16, fault display lamp 17; Its back side is equipped with power output socket 18, protective tube 19, lightning protection filter element 20, antenna input socket 25 and output socket 24, earthing of casing line 22, and perforation place is in addition with the power line 23 of plug; The circuit board of being made up of power input interface 1, antenna input circuit 5, lightning protection filter 2, power rectifier clean circuit 3, operating state display circuit 4 is installed in the box, wherein lightning protection filter 2 is core components of work, power input interface 1 and antenna input circuit 5 are directly connected in the lightning protection filter 2, and lightning protection filter 2 connects antenna output circuit 11, power rectifier clean circuit 3, power supply sample circuit 7 and power output circuit 10 again respectively; Power rectifier clean circuit 6 also is connected with operating state display circuit 4; Being connected with power supply between power supply sample circuit 6 and the power output circuit 10 in turn detects controller 7, delay circuit 8, detects control executive circuit 9.

Claims (2)

1. anti-lightning strike, superpressure preventing man non-electricity protector is characterized in that its profile is a cuboid box, and there are mains switch (12) and 5 indicator lights (13-17) in its front; Its back side is equipped with power output socket (18), protective tube (19), lightning protection filter element (20), antenna input (25) and output socket (24), earthing of casing line (22), and perforation place is in addition with the power line (23) of plug; The circuit board of being made up of power input interface (1), antenna input circuit (5), lightning protection filter (2), power rectifier clean circuit (3), operating state display circuit (4) is installed in the box, wherein lightning protection filter (2) is the core component of work, power input interface (1) and antenna input circuit (5) are directly connected in the lightning protection filter (2), and lightning protection filter (2) connects antenna output circuit (11), power rectifier clean circuit (3), power supply sample circuit (7) and power output circuit (10) again respectively; Power rectifier clean circuit (6) also is connected with operating state display circuit (4); Being connected with power supply between power supply sample circuit (6) and the power output circuit (10) in turn detects controller (7), delay circuit (8), detects control executive circuit (9).

2. family according to claim 1 non-electricity protector, 5 indicator lights that it is characterized in that described protector front are respectively that aerial signal indicator light (13), supply voltage are crossed low indicator light (14), detected the double protection of delay indicator light (15), voltage power supply indicator light (16), fault display lamp (17).

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