CN201440607U - Anti lightning circuit, power device and household appliances - Google Patents
Anti lightning circuit, power device and household appliances Download PDFInfo
- Publication number
- CN201440607U CN201440607U CN2009201330554U CN200920133055U CN201440607U CN 201440607 U CN201440607 U CN 201440607U CN 2009201330554 U CN2009201330554 U CN 2009201330554U CN 200920133055 U CN200920133055 U CN 200920133055U CN 201440607 U CN201440607 U CN 201440607U
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- live wire
- zero line
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Abstract
The utility model is applied to the technology field of circuit protective equipment, which provides an anti lightning circuit, power source and household appliances; the anti lightening circuit comprises a surge filtering module which is respectively connected with live wire and zero wire at the input end of the power source, and the surge filtering module filters and absorbs the lightning signal and the surge signal exceeding limit value between the live wire and the zero wire; and a live-wire grounding surge filtering module or a zero-wire grounding surge filtering module, wherein, the input end is respectively connected with the live wire and the zero wire at the input end of the power source, and the output end is connected with groundwire at the input end of the power source, and the live-wire grounding surge filtering module or the zero-wire grounding surge filtering module filters and absorbs the lightning signal and the surge signal exceeding limit value between the live wire or the zero wire and the ground. In the utility model, the anti lightening circuit realizes double protecting functions; therefore, the level of anti-lightening and anti-surging for the anti lightening circuit is increased.
Description
Technical field
The utility model belongs to the technical field of electric circuit protection equipment, relates in particular to a kind of lightning protection circuit, supply unit and household electrical appliance.
Background technology
In remote districts, most of rural area and mountain area atmospheric electrical phenomena frequently takes place at present, the interference that household electrical appliance are struck by lightning will operate as normal, serious even can influence safety of life and property, because of being built many condition restriction such as electrical network condition, care and maintenance, the anti-lightning strike ability of rural power grids self a little less than, the task of lightning protection just can only drop on the household electrical appliance head.
But, the anti-lightning strike ability of the power supply of present most of household electrical appliance a little less than, what have does not even possess anti-lightning strike ability.Like this, use household electrical appliance to be easy to be subjected to the influence of environment in rural area remote districts and mountain area, cause use inconvenience and useful life problem on the low side.
The utility model content
The purpose of this utility model is to provide a kind of lightning protection circuit, be intended to solve existing household electrical appliance power supply anti-lightning strike ability a little less than, cause use in remote districts, rural area and mountain area household electrical appliance exist inconvenience and useful life problem on the low side.
The utility model is achieved in that a kind of lightning protection circuit, and described lightning protection circuit comprises:
Be connected with zero line with the live wire of power input respectively, will filter surging filtering module between the live wire that sponges and zero line above the live wire of limit value and the lightning strike signals between the zero line and surging signal; And
Input is connected with zero line with the live wire of described power input respectively, live wire that output is connected with the ground wire of power input or zero line be the surging filtering module over the ground, and it will filter above the live wire of limit value or the lightning strike signals between zero line and the ground and surging signal and sponge.
In the said structure, described lightning protection circuit also comprises switch, and an end of described switch and described live wire or the zero line output of surging filtering module over the ground are connected, and its other end is connected with the ground wire of power input.
In the said structure, the surging filtering module comprises first piezo-resistance between described live wire and zero line, and the two ends of described first piezo-resistance are connected with zero line with the live wire of described power input respectively.
In the said structure, described live wire or zero line surging filtering module over the ground comprise second piezo-resistance, the 3rd piezo-resistance and discharge tube, the live wire of the described power input of first termination of described second piezo-resistance, second end of described second piezo-resistance connects first end of the 3rd piezo-resistance and first end of discharge tube simultaneously, the zero line of the second termination power input of described the 3rd piezo-resistance, second end of described discharge tube connects the ground wire of power input by switch.
Another purpose of the present utility model is to provide a kind of supply unit, and described supply unit comprises power input, and described supply unit also comprises above-mentioned lightning protection circuit.
Another purpose of the present utility model is to provide a kind of household electrical appliance, and described household electrical appliance comprise above-mentioned supply unit.
In the said structure, described household electrical appliance comprise computer, television set, refrigerator and air-conditioning.
In the utility model; lightning protection circuit comprises between live wire and zero line surging filtering module and live wire or zero line surging filtering module over the ground; realize double protection functions; therefore improved the grade of the anti-lightning strike and anti-surge of lightning protection circuit; and can be according to user's needs; by cut-off switch, make lightning protection circuit only work by surging filtering module between live wire and zero line, realize the function of the anti-lightning strike and anti-surge of suborder.
Description of drawings
Fig. 1 is the structure chart of the lightning protection circuit that provides of the utility model embodiment;
Fig. 2 is the examples of circuits figure of the lightning protection circuit that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 1 shows the structure of the lightning protection circuit that the utility model embodiment provides.
Lightning protection circuit comprises between live wire and zero line surging filtering module 100 and live wire or zero line surging filtering module 200 over the ground.
Surging filtering module 100 is connected with zero line N with the live wire L of power input 300 respectively between live wire and zero line, will filter above the live wire L of limit value and the lightning strike signals between the zero line N and surging signal to sponge,
Live wire or the zero line input of surging filtering module 200 over the ground are connected with zero line N with the live wire L of power input 300 respectively, output is connected with the ground wire GN of power input 300, and it will filter above the live wire L of limit value or the lightning strike signals between zero line N and the ground and surging signal and sponge.
As the utility model one embodiment, lightning protection circuit also comprises switch 400, and an end of switch 400 and live wire or the zero line output of surging filtering module 200 over the ground are connected, and its other end is connected with the ground wire GN of power input 300.
Fig. 2 shows the examples of circuits structure of the lightning protection circuit that the utility model embodiment provides.
Surging filtering module 100 comprises the first piezo-resistance VR1 between live wire and zero line, and the two ends of the first piezo-resistance VR1 are connected with zero line N with the live wire L of power input 300 respectively.
Live wire or zero line surging filtering module 200 over the ground comprise the second piezo-resistance VR2, the 3rd piezo-resistance VR3 and discharge tube GDT, the live wire L of the first termination power input 300 of the second piezo-resistance VR2, second end of the second piezo-resistance VR2 connects first end of the 3rd piezo-resistance VR3 and first end of discharge tube GDT simultaneously, the zero line N of the second termination power input 300 of the 3rd piezo-resistance VR3, second end of discharge tube GDT meet the ground wire GN of power input 300 by switch 400.
The live wire L of power input 300, zero line N and the first piezo-resistance VR1 constitute a loop, surpass the live wire L of limit value and the lightning strike signals between the zero line N and surging signal and are absorbed by the first piezo-resistance VR1.When switch 400 closures, the live wire L of power input 300, the second piezo-resistance VR2, discharge tube GDT and switch 400 constitute a loop, surpassing the live wire L of limit value and the lightning strike signals between the ground and surging signal is absorbed by the second piezo-resistance VR2 and discharge tube GDT, equally, the zero line N of power input 300, the 3rd piezo-resistance VR3, discharge tube GDT and switch 400 constitute a loop, surpass the zero line N of limit value and the lightning strike signals between the ground and surging signal and are absorbed by the 3rd piezo-resistance VR3 and discharge tube GDT.Like this; the high pressure that thunderbolt is brought just can not enter the main circuit of supply unit; can not influence the operate as normal of supply unit; by the duplicate protection of surging filtering module 200 over the ground of surging filtering module 100 and live wire or zero line between live wire and zero line, this lightning protection circuit can reach the requirement of highest ranking-Di 4 grades of anti-lightning strike and anti-surge.
Not high or live wire or zero line were when surging filtering module 200 lost efficacy over the ground when the class requirement of anti-lightning strike and anti-surge, as long as cut-off switch 400, make lightning protection circuit only be worked by surging filtering module 100 between live wire and zero line, this lightning protection circuit can reach the requirement of the 2nd grade of anti-lightning strike and anti-surge.
The utility model embodiment also provides a kind of supply unit, and supply unit comprises power input 300 and above-mentioned lightning protection circuit.
The utility model embodiment also provides a kind of household electrical appliance, and household electrical appliance comprise above-mentioned supply unit, and household electrical appliance comprise computer, television set, refrigerator and air-conditioning.
In the utility model embodiment; lightning protection circuit comprises between live wire and zero line surging filtering module and live wire or zero line surging filtering module over the ground; realize double protection functions; therefore improved the grade of the anti-lightning strike and anti-surge of lightning protection circuit; and can be according to user's needs; by cut-off switch, make lightning protection circuit only work by surging filtering module between live wire and zero line, realize the function of the anti-lightning strike and anti-surge of suborder.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (7)
1. a lightning protection circuit is characterized in that, described lightning protection circuit comprises:
Be connected with zero line with the live wire of power input respectively, will filter surging filtering module between the live wire that sponges and zero line above the live wire of limit value and the lightning strike signals between the zero line and surging signal; And
Input is connected with zero line with the live wire of described power input respectively, live wire that output is connected with the ground wire of power input or zero line be the surging filtering module over the ground, and it will filter above the live wire of limit value or the lightning strike signals between zero line and the ground and surging signal and sponge.
2. lightning protection circuit as claimed in claim 1 is characterized in that described lightning protection circuit also comprises switch, and an end of described switch and described live wire or the zero line output of surging filtering module over the ground are connected, and its other end is connected with the ground wire of power input.
3. lightning protection circuit as claimed in claim 1 is characterized in that the surging filtering module comprises first piezo-resistance between described live wire and zero line, and the two ends of described first piezo-resistance are connected with zero line with the live wire of described power input respectively.
4. lightning protection circuit as claimed in claim 2, it is characterized in that, described live wire or zero line surging filtering module over the ground comprise second piezo-resistance, the 3rd piezo-resistance and discharge tube, the live wire of the described power input of first termination of described second piezo-resistance, second end of described second piezo-resistance connects first end of the 3rd piezo-resistance and first end of discharge tube simultaneously, the zero line of the second termination power input of described the 3rd piezo-resistance, second end of described discharge tube connects the ground wire of power input by switch.
5. supply unit, described supply unit comprises power input, it is characterized in that, described supply unit also comprises each described lightning protection circuit as claim 1-4.
6. household electrical appliance is characterized in that, described household electrical appliance comprise supply unit as claimed in claim 5.
7. household electrical appliance as claimed in claim 6 is characterized in that described household electrical appliance comprise computer, television set, refrigerator and air-conditioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201330554U CN201440607U (en) | 2009-06-24 | 2009-06-24 | Anti lightning circuit, power device and household appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201330554U CN201440607U (en) | 2009-06-24 | 2009-06-24 | Anti lightning circuit, power device and household appliances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201440607U true CN201440607U (en) | 2010-04-21 |
Family
ID=42545266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201330554U Expired - Lifetime CN201440607U (en) | 2009-06-24 | 2009-06-24 | Anti lightning circuit, power device and household appliances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201440607U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916347A (en) * | 2010-07-30 | 2010-12-15 | 浙江立普电器有限公司 | Power supply manager of computer |
| WO2013149575A1 (en) * | 2012-04-01 | 2013-10-10 | 华为终端有限公司 | Lightning protection circuit, switching power supply and lightning protection method |
| CN106765854A (en) * | 2015-11-20 | 2017-05-31 | 苏州宝时得电动工具有限公司 | Air purifier |
| CN108206505A (en) * | 2016-12-16 | 2018-06-26 | 马亨德拉雷瓦电动汽车有限公司 | For the method and apparatus of the surging protection during electric vehicle charging |
-
2009
- 2009-06-24 CN CN2009201330554U patent/CN201440607U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916347A (en) * | 2010-07-30 | 2010-12-15 | 浙江立普电器有限公司 | Power supply manager of computer |
| WO2013149575A1 (en) * | 2012-04-01 | 2013-10-10 | 华为终端有限公司 | Lightning protection circuit, switching power supply and lightning protection method |
| US9391445B2 (en) | 2012-04-01 | 2016-07-12 | Huawei Device Co., Ltd. | Surge protection circuit, switching power supply, and surge protection method |
| CN106765854A (en) * | 2015-11-20 | 2017-05-31 | 苏州宝时得电动工具有限公司 | Air purifier |
| CN108206505A (en) * | 2016-12-16 | 2018-06-26 | 马亨德拉雷瓦电动汽车有限公司 | For the method and apparatus of the surging protection during electric vehicle charging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518057 computer building of the Great Wall, Nanshan District science and Technology Park, Shenzhen, Guangdong Patentee after: China the Great Wall science and technology group Limited by Share Ltd Address before: 518057 computer building of the Great Wall, Nanshan District science and Technology Park, Shenzhen, Guangdong Patentee before: China Changcheng Computer Shenzhen Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100421 |