CN2359706Y - Non-power-supply microwave leakage measuring apparatus - Google Patents
Non-power-supply microwave leakage measuring apparatus Download PDFInfo
- Publication number
- CN2359706Y CN2359706Y CN 98242041 CN98242041U CN2359706Y CN 2359706 Y CN2359706 Y CN 2359706Y CN 98242041 CN98242041 CN 98242041 CN 98242041 U CN98242041 U CN 98242041U CN 2359706 Y CN2359706 Y CN 2359706Y
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- Prior art keywords
- microwave
- utility
- model
- ammeter
- measuring apparatus
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to a microwave leakage measuring apparatus without a power supply. The utility model is composed of a shell body, a DC ammeter and a circuit board. The utility model is characterized in that the utility model does not need the power supply, a non on-line corresponding frequency is used for receiving microwave energy leaked from a microwave oven, the microwave energy is converted to electric energy for driving a pointer on DC electric current to swing, and qualitative measurement is carried out. The microwave leakage measuring apparatus has the advantages of simple operation, visual results and low cost, and the utility model is especially suitable for ordinary maintenance departments and families to carry out microwave leakage measurement for the microwave oven.
Description
A kind of microwave leak detector, particularly a kind of power free microwave leak detector.
Fast development along with household electrical appliance, household microwave oven is very universal in the use of general family, but it is common occurrence that the part microwave in the micro-wave oven furnace chamber is run out from the crack between a door and its frame that picks and places food, though this leakage is atomic little, but along with the micro-wave oven increase of service time, leaking also can correspondingly increase.When the leakage of microwave surpasses 5mw/cm
2After, will constitute injury to human body, cause the human body burn, cause cataract, the injury white blood cell is upset the magnetic field that is produced by the human body cell vibration, causes symptoms such as headache, giddy, ophthalmodynia, neurasthenia.
Domestic and international existing microwave leakage measuring instrument all has power supply, and not only the precision of testing result is not high, and complex structure, and volume is bigger, and the price height is general only as the production line detection of manufacturer, can't enter family and detect voluntarily.
The goal of the invention of this utility model is: provide a kind of need not power supply, adopt non-online respective frequencies to receive the microwave energy that micro-wave oven leaks out, through converting the mode that electric energy drives Displaying Meter to, use for the consumer, simple to operate, visual result, cheap microwave leak detector.
Technical solution of the present utility model is: a kind of non-transformer microwave leak detector, it is by housing 1, DC ammeter 2, pointer 3, circuit board 4, leak normal district 5, leak excess district 6, metal plate 7, diode D, resistance R, adjustable resistance VR and capacitor C are formed, one end of housing 1 is equipped with a direct current reometer 2, one side of DC ammeter 2 is equipped with a circuit board 4, it is characterized in that: DC ammeter 2 is marked with leaks normal district 5, leak excess district 6 and a pointer 3 is housed, one metal plate 7 of making receiving antenna is housed on the circuit board 4, metal plate connects detecting circuit and the adjustable resistance VR that is formed by diode D and resistance R, be parallel with a capacitor C on the adjustable resistance VR, capacitor C connects DC ammeter 2 by lead.
The utility model has the advantages that: need not power supply, adopt non-online respective frequencies directly to receive the microwave energy that micro-wave oven leaks out, drive Displaying Meter through converting electric energy to, measure accurately, visual result, easy to operate, cheap.
Below in conjunction with accompanying drawing the utility model is described below further:
Accompanying drawing 1 is the structural representation of non-transformer microwave leak detector;
Accompanying drawing 2 is the electric functional-block diagram of non-transformer microwave leak detector;
Accompanying drawing 3 is the circuit diagram of non-transformer microwave leak detector circuit board.
Wherein: 1 housing, 2 DC ammeter, 3 pointers, 4 circuit boards, 5 leak normal district, and 6 leak excess district, 7 metal plates.
This microwave leak detector is made up of housing 1, DC ammeter 2 and circuit board 4 three parts, need not power supply, be to adopt non-online respective frequencies to receive the microwave energy that micro-wave oven leaks out, can convert electric energy to, drive Displaying Meter, the microwave leakage amount of micro-wave oven is presented on the panel board, and reaches the implementation observational measurement.In the microwave leakage amount that detects micro-wave oven just often whether its concrete course of work is:, after micro-wave oven is opened to normal high-temperature cooking state half a minute, one end of the no DC ammeter 2 of this leak detector is pressed close to the fire door seam, and it is slowly mobile along crack between a door and its frame, when there is microwave leakage at the crack between a door and its frame place, the metal plate 7 as receiving antenna on the circuit board 4 receives microwave electromagnetic field, detecting circuit through diode D and resistance R formation, microwave electromagnetic field (2450MHz) detection of ultrahigh frequency is become low-frequency voltage and electric current, decay through adjustable resistance VR through low-frequency voltage and electric current after the detection, carry out filtering through capacitor C again after the decay, make it to become DC voltage and DC current, thereby drive DC ammeter 2, make pointer 3 swings on it.Be marked with the normal district 5 of leakage and leak excess district 6 in DC ammeter 2, when pointer 3 is swung, illustrate that the microwave leakage amount of micro-wave oven does not exceed 5mw/cm in the normal district 5 of leakage
2, the microwave leakage amount of micro-wave oven is normal.If otherwise pointer 3 swing in leaking excess district 6, then the microwave leakage amount is improper, should overhaul.This non-transformer microwave leak detector is observational measurement, and is simple to operate, easy to use, cheap, is fit to very much general maintenance department and family and uses.
Claims (1)
- A kind of non-transformer microwave leak detector, it is by housing 1, DC ammeter 2, pointer 3, circuit board 4, leak normal district 5, leak excess district 6, metal plate 7, diode D, resistance R, adjustable resistance VR and capacitor C are formed, one end of housing 1 is equipped with a direct current reometer 2, one side of DC ammeter 2 is equipped with a circuit board 4, it is characterized in that: DC ammeter 2 is marked with leaks normal district 5, leak excess district 6 and a pointer 3 is housed, one metal plate 7 of making receiving antenna is housed on the circuit board 4, metal plate connects detecting circuit and the adjustable resistance VR that is formed by diode D and resistance R, be parallel with a capacitor C on the adjustable resistance VR, capacitor C connects DC ammeter 2 by lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98242041 CN2359706Y (en) | 1998-09-30 | 1998-09-30 | Non-power-supply microwave leakage measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98242041 CN2359706Y (en) | 1998-09-30 | 1998-09-30 | Non-power-supply microwave leakage measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2359706Y true CN2359706Y (en) | 2000-01-19 |
Family
ID=33988680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98242041 Expired - Fee Related CN2359706Y (en) | 1998-09-30 | 1998-09-30 | Non-power-supply microwave leakage measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2359706Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697666A (en) * | 2013-12-25 | 2014-04-02 | 南京研正微波设备厂 | Safety microwave dryer |
| CN112014761A (en) * | 2020-10-20 | 2020-12-01 | 佛仪科技(佛山)有限公司 | Leakage wave detection device and method and radio frequency power supply |
| CN113853832A (en) * | 2019-05-30 | 2021-12-28 | Bsh家用电器有限公司 | Domestic microwave device with detection means for detecting microwave leakage radiation |
-
1998
- 1998-09-30 CN CN 98242041 patent/CN2359706Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697666A (en) * | 2013-12-25 | 2014-04-02 | 南京研正微波设备厂 | Safety microwave dryer |
| CN103697666B (en) * | 2013-12-25 | 2016-08-17 | 南京研正微波设备厂 | A kind of safety microwave dryer |
| CN113853832A (en) * | 2019-05-30 | 2021-12-28 | Bsh家用电器有限公司 | Domestic microwave device with detection means for detecting microwave leakage radiation |
| CN112014761A (en) * | 2020-10-20 | 2020-12-01 | 佛仪科技(佛山)有限公司 | Leakage wave detection device and method and radio frequency power supply |
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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 |