CN2511032Y - Domestic-appliance lightning-stroke-proof apparatus of mainly preventing from inductive lightning - Google Patents
Domestic-appliance lightning-stroke-proof apparatus of mainly preventing from inductive lightning Download PDFInfo
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- CN2511032Y CN2511032Y CN 01267583 CN01267583U CN2511032Y CN 2511032 Y CN2511032 Y CN 2511032Y CN 01267583 CN01267583 CN 01267583 CN 01267583 U CN01267583 U CN 01267583U CN 2511032 Y CN2511032 Y CN 2511032Y
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Abstract
The utility model discloses an anti-lightning device, especially an anti-lightning device for appliances which is used to prevent induction lightning. According to the Single measure of the existing technic, a three-level protection measure is proposed in the utility model, which consists of a gas discharge tube, a varistor and a transient inhibition diode. Because of using the combination of three components, the anti-lightning device of the utility model has the more powerful protection to the inrush current, has the better protection capability to the nanosecond rapid pulse string, and plays a more obvious improvements to inhibit the rapid pulse group in the EMC design of the electrical equipment.
Description
Technical field
The utility model relates to lightning proof, specifically, the utility model relates to a kind of household electrical appliances lightning proof that mainly prevents to respond to thunder.
Background technology
Because thunderbolt often causes the damage of electric equipment, severe patient also can cause comparatively serious security incidents such as fire; The form of thunderbolt has induction thunder, spherical thunder etc. usually, and the induction thunder is about 70% of thunderbolt sum, is characterized in the discharge voltage height, can be up to more than the 500KV; Current amplitude is big, can be up to 100-300KA, and discharge time is short, is generally 100nS to 1mS.
The destruction of thunderbolt mainly shows as classics induction and electromagnetic induction, back flashover and the introducing high potential of heating effect of current, rush of current ripple, electric current dynamo-electric effect, electric current.
Establishing and improve of the EMC rules of European Union and various countries stipulated superpotential limit value and method of testing in instruction, mainly comprise ESD (static discharge), instantaneous short pulse, pulse voltage (transient phenomena of surge, high energy).
The main cause that these phenomenons produce is:
First: the internal over pressure that the reason of protected internal system causes, the connection of inductive load, electric arc, with the mutual interference mutually of higher directly coupling of potential, circuit inductance or electric capacity.
Second: external cause, the interference volume of circuit restriction, strong electromagnetic field, effects of lightning.
Researcher of the present utility model thinks after long-time investigation to Chinese electrical network: the electronic equipment that uses on the 220V network should possess the ability that suppresses following pulse voltage: amplitude is about 6KV, pulse duration is about 0.05 μ S to 2mS, considers the instruction in the FMC test simultaneously.
Below be to some anti-lightning strike concrete measures of household electrical appliances in the prior art.
CN87216505 discloses the anti-lightning strike automatic protector of a kind of television set, and this protector cuts off thunder and lightning automatically by high-voltage switch gear and reaches anti-lightning strike purpose from the approach that external antenna and power supply enter television set.
CN96210681 discloses a kind of power supply thunderbolt automatic protector, and when thunderbolt, coil produces induced voltage, makes the controllable silicon conducting, the actuating of relay, and protection switch disconnects, and plays a protective role.
CN96233880 discloses a kind of phone and has prevented usurping lightning proof with anti-eavesdrop, and described lightning prevention circuit adopts piezo-resistance to constitute the portraitlandscape protective circuit.
CN96245481 discloses a kind of power supply thunderbolt electric leakage automatic protector, and it adopts the zinc oxide pressure-sensitive element to form triple protection equally.
CN98242468 discloses a kind of connector of anti-lightning strike power supply protector of microelectronic device; described connector comprises elementary pressure limiting circuit and secondary voltage limiting circuit; fuse of input series connection of elementary pressure limiting circuit is in series with isolated component between elementary pressure limiting circuit and the secondary voltage limiting circuit.
CN99232027 discloses a kind of electrical appliance that prevents by the device that is struck by lightning, and is included in two blocks of sawtooth pattern discharge metal plates, two fuses, two inductance coils, electric capacity and piezo-resistances are housed on the mount board.
But above-mentioned anti-lightning strike measure is owing to adopt single measure, perhaps not really clear to anti-lightning strike purpose research, so have problems in actual use.
The lightning protection measures that the lightning proof that the utility model proposes is taked mainly is to prevent " induction thunder ", because it is less that the probability of direct stroke takes place, and the energy of direct stroke is too big, and it is impossible to rely on single electric equipment to carry out lightning protection.
Summary of the invention
The purpose of this utility model is to provide a kind of household electrical appliances lightning proof that mainly prevents to respond to thunder.
The purpose of this utility model can be achieved in the following manner: protective device described in the utility model position is arranged in the input circuit (typical case uses: be made up of fuse 1, electric capacity 4, filter 5, electric capacity 6, rectifier bridge 7 and electrochemical capacitor 8) of power supply; anti-lightning strike measure described in the utility model is fuse 1 back gas discharge tube 2 in parallel and the piezo-resistance 3 at the input of device, and a transition in parallel suppresses diode 9 between rectifier bridge 7 that installs and electrochemical capacitor 8.
Owing to adopt the combination of three kinds of components and parts; make lightning proof of the present utility model more powerful to the defencive function of surge current; and; fast-pulse string for nanosecond; have protective capacities preferably, also play for the inhibition of the fast-pulse group in the FMC design of electric equipment and comparatively significantly improve effect.
Description of drawings
Accompanying drawing 1 is the schematic diagram of household electrical appliances lightning proof described in the utility model;
Embodiment
Lightning proof described in the utility model as shown in Figure 1.
Referring to accompanying drawing 1, can see that from accompanying drawing 1 protection of lightning proof described in the utility model is divided into 3 grades, and is specific as follows:
The first order safeguard measure of lightning proof described in the utility model is a gas discharge tube; have as the gas discharge tube of first order protection that the capacity of shoving is big, the advantage of leakage current; its shortcoming is that response speed is rapid inadequately; compare with discharging gap; more safe and reliable, puncture voltage is constant, high conformity; compare with the lightning protection components and parts of other type, it can bear bigger pulse current.
It is to be used for suppressing the bigger thunderbolt of those impact energys or other overvoltage pulse that gas discharge tube described in the utility model mainly acts on.
Pulse voltage for the bigger thunderbolt of impact energy, because the time that continues is longer, use the slower components and parts of reaction speed, also the main energy of impulse current can be curbed, but because pulse current energy strength is bigger, therefore the bigger components and parts of capacity of selecting to shove can play good effect, and in the utility model, the parameter of preferred gas discharge tube is mainly:
| The gas discharge tube model | ?VDC | ?IMAX | ?INOMAL |
| ?N80-A600X | ?600V | ?10KA | ?10A |
| ?A80-A600X | ?600V | ?20KA | ?20A |
The second level safeguard measure of lightning proof described in the utility model is a piezo-resistance, and it has, and the capacity of shoving is big, the fast advantage of response speed.
Piezo-resistance described in the utility model is mainly used to suppress more than 50 nanoseconds high voltage pulse fast.
Usually, the operate time of the employed pressure-sensitive ceramic material of piezo-resistance self is within picosecond range, when using the varistor of band lead-in wire, owing to be subjected to the influence of connecting line inductance, lag behind operate time, extend to several nanoseconds or tens nanoseconds, therefore in the use of anti-lightning strike components and parts, should reduce the length of lead-in wire as much as possible.
The AC power that China uses is generally 220V, but because electrical network situation more complicated, individual other regional scope range of the fluctuation of voltage maximum at short notice can arrive 90V-270V, and the parameter of the preferred especially piezo-resistance of the utility model in use lost efficacy to avoid piezo-resistance.
In the utility model, arrive the pulse voltage and the electric current of piezo-resistance, because the protection of prime gas discharge tube, pulse duration is generally less than 20 μ S, is effective working region of piezo-resistance; Simultaneously, because piezo-resistance has good anti-current impact capacity, it also can be used as a good surge current protective element, and in the utility model, the parameter of piezo-resistance is provided with as follows:
| The piezo-resistance model | ?VRMS | ?VDC | ?IMAX(8/20 ?μS) | ?WMAX(2MS) | ?PMAX |
| ?S14K385 | ?385 | ?505 | ?4500A | ?80W | ?0.60W |
| ?S20K385 | ?385 | ?505 | ?8000A | ?150W | ?1W |
The third level safeguard measure of lightning proof described in the utility model is that transition suppresses diode, and described transition suppresses diode and has little, withstand voltage not high, the fastest characteristics of response speed of the capacity of shoving.
The main effect of the transient voltage diode described in the utility model is to suppress following pulse voltage of 50 nanoseconds.
The transient voltage diode is called for short TVS, possesses the characteristics of diode, when being subjected to the high energy impact events of transient state, can be with 1/1012 second speed responsing, and the utility model has adopted unidirectional TVS at this, and concrete parameter is as follows:
| Transient voltage diode model | Energy grade (W) | The base pressure (V) that conducts electricity | Other |
| P6KE440A | ?600 | ?440 | Unidirectional, diode package |
| 1.5KE440A | ?1500 | ?440 | Unidirectional, diode package |
| 1.5KE440CA | ?1500 | ?440 | Two-way, diode package |
Waveform schematic diagram by the 2-1 in the accompanying drawing 2,2-2,2-3,2-4 as can be seen, overvoltage pulse obtains good restraining by behind the lightning proof, the test item for the relevant overvoltage of power supply in the FMC authentication also can play good effect.
Can see that by accompanying drawing 2 when the thunderbolt electric pulse of the about 60 μ S of pulse duration, the about 1200V of surge voltage entered input of the present utility model, its waveform was shown in Fig. 2-1.
Through the inhibitory action of first order safeguard measure gas discharge tube 2, time of delay, long overvoltage partly curbed with wherein, made the pulse duration of described thunderbolt electric pulse become below the 20 μ s, and overvoltage drops to about 600V, and its waveform is shown in Fig. 2-2.
When described residue thunderbolt electric pulse continues to be delivered to second level safeguard measure forward, be subjected to the inhibition of the stronger piezo-resistance of anti-current impact capacity 3, the energy of wherein partial pulse high pressure curbed, referring to accompanying drawing 2-3.
By the filtering of filter 5 and the rectified action of rectifier bridge 7, remaining thunderbolt electric pulse enters third level safeguard measure, be subjected to the inhibitory action that transition suppresses diode 9, with the pulsation direct voltage in remaining alternating component suppress again, the about 2 μ S of the width of the electric pulse that obtains, the about 450V of surge voltage, its waveform is referring to shown in Fig. 2-4; The overvoltage pulse that thunderbolt produces has obtained good restraining by behind the lightning proof described in the utility model.
But, as aforementioned, the anti-lightning strike measure of electrical equipment is restricted aspect anti-lightning strike, because energy during thunderbolt and the uncertainty of time, the anti-lightning strike measure that relies on household electrical appliance itself fully is worthless, behind the multistage lightning-protection system of electric power system, the anti-lightning strike measure of user's household electrical appliance itself should be last ring in the multistage anti-lightning strike measure, and, have in the household electrical appliances of outdoor equipment, antenna in use, it is necessary adopting other anti-lightning strike measure.
Lightning proof described in the utility model has adopted the combination of these three kinds of components and parts; compare with the lightning proof of independent these several devices of use, have more advantage, it is more powerful to the defencive function of surge current; fast-pulse string for nanosecond has protective capacities preferably.
Claims (4)
1, a kind of household electrical appliances lightning proof that mainly prevents to respond to thunder, it is characterized in that described device is made up of the electric capacity 4 that is linked in sequence, filter 5, electric capacity 6, rectifier bridge 7 and electrochemical capacitor 8, and at the input fuse 1 of connecting of device, in the fuse 1 back gas discharge tube 2 in parallel and the piezo-resistance 3 of the input that installs, a transition in parallel suppresses diode 9 between rectifier bridge 7 that installs and electrochemical capacitor 8.
2, the household electrical appliances lightning proof that mainly prevents to respond to thunder according to claim 1, it is characterized in that: the VDC of described gas discharge tube is 600V, and IMAX is 10-20KA, and INOMAL is 10-20A.
3, the household electrical appliances lightning proof that mainly prevents to respond to thunder according to claim 1 is characterized in that: the VRMS385 of described piezo-resistance, VDC505 IMAX (8/20 μ S) 4500-8000A WMAX (2MS) 80-150W PMAX0.60-1W.
4, the household electrical appliances lightning proof that mainly prevents to respond to thunder according to claim 1 is characterized in that: described transition suppresses diode energy grade 600-1500W, and base conducts electricity and presses V440, unidirectional or two-way diode package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01267583 CN2511032Y (en) | 2001-10-15 | 2001-10-15 | Domestic-appliance lightning-stroke-proof apparatus of mainly preventing from inductive lightning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01267583 CN2511032Y (en) | 2001-10-15 | 2001-10-15 | Domestic-appliance lightning-stroke-proof apparatus of mainly preventing from inductive lightning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2511032Y true CN2511032Y (en) | 2002-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01267583 Expired - Fee Related CN2511032Y (en) | 2001-10-15 | 2001-10-15 | Domestic-appliance lightning-stroke-proof apparatus of mainly preventing from inductive lightning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2511032Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100407538C (en) * | 2005-03-11 | 2008-07-30 | 广东中钰科技有限公司 | Lightning protection device for video frequency monitoring equipment |
| CN100470989C (en) * | 2002-11-05 | 2009-03-18 | 半导体元件工业有限责任公司 | Integrated surge current limiter circuit and method |
| CN101867231A (en) * | 2010-06-28 | 2010-10-20 | 国网电力科学研究院武汉南瑞有限责任公司 | High-voltage side mutual inductance energy-acquiring device of high-voltage power transmission line |
| CN101895041A (en) * | 2010-03-23 | 2010-11-24 | 贵州航天电器股份有限公司 | Anti-surge voltage electric connector socket |
| CN101924461A (en) * | 2009-06-16 | 2010-12-22 | 池万义 | Direct connection preventing voltage converter of electromobile |
| CN103001201A (en) * | 2011-09-13 | 2013-03-27 | 黄岩 | Method and device for suppressing high-energy surge |
| CN103134988A (en) * | 2013-01-31 | 2013-06-05 | 中国科学院上海技术物理研究所 | Multichannel value of resistance automation measuring system |
| CN106331545A (en) * | 2016-10-31 | 2017-01-11 | 合肥惠科金扬科技有限公司 | Thunder strike-preventive testing mis-protection circuit and TV |
| CN109155833A (en) * | 2016-03-21 | 2019-01-04 | 科尔伯特·恰库特 | For disconnecting the device of coaxial cable automatically from the tuner of television set or decoder |
| CN110391689A (en) * | 2019-09-05 | 2019-10-29 | 山东晶导微电子股份有限公司 | Power module |
-
2001
- 2001-10-15 CN CN 01267583 patent/CN2511032Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100470989C (en) * | 2002-11-05 | 2009-03-18 | 半导体元件工业有限责任公司 | Integrated surge current limiter circuit and method |
| CN100407538C (en) * | 2005-03-11 | 2008-07-30 | 广东中钰科技有限公司 | Lightning protection device for video frequency monitoring equipment |
| CN101924461A (en) * | 2009-06-16 | 2010-12-22 | 池万义 | Direct connection preventing voltage converter of electromobile |
| CN101895041A (en) * | 2010-03-23 | 2010-11-24 | 贵州航天电器股份有限公司 | Anti-surge voltage electric connector socket |
| CN101867231A (en) * | 2010-06-28 | 2010-10-20 | 国网电力科学研究院武汉南瑞有限责任公司 | High-voltage side mutual inductance energy-acquiring device of high-voltage power transmission line |
| CN103001201A (en) * | 2011-09-13 | 2013-03-27 | 黄岩 | Method and device for suppressing high-energy surge |
| CN103134988A (en) * | 2013-01-31 | 2013-06-05 | 中国科学院上海技术物理研究所 | Multichannel value of resistance automation measuring system |
| CN109155833A (en) * | 2016-03-21 | 2019-01-04 | 科尔伯特·恰库特 | For disconnecting the device of coaxial cable automatically from the tuner of television set or decoder |
| CN109155833B (en) * | 2016-03-21 | 2021-12-17 | 科尔伯特·恰库特 | Device for automatically disconnecting coaxial cable from tuner of television or decoder |
| CN106331545A (en) * | 2016-10-31 | 2017-01-11 | 合肥惠科金扬科技有限公司 | Thunder strike-preventive testing mis-protection circuit and TV |
| CN106331545B (en) * | 2016-10-31 | 2023-02-14 | 合肥惠科金扬科技有限公司 | Lightning stroke prevention test error protection circuit and television |
| CN110391689A (en) * | 2019-09-05 | 2019-10-29 | 山东晶导微电子股份有限公司 | Power module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |