CN2329108Y - Electricity cut-off protector when water free - Google Patents
Electricity cut-off protector when water free Download PDFInfo
- Publication number
- CN2329108Y CN2329108Y CN 98230719 CN98230719U CN2329108Y CN 2329108 Y CN2329108 Y CN 2329108Y CN 98230719 CN98230719 CN 98230719 CN 98230719 U CN98230719 U CN 98230719U CN 2329108 Y CN2329108 Y CN 2329108Y
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- CN
- China
- Prior art keywords
- power supply
- utility
- model
- electrode
- protector
- Prior art date
- 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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Abstract
The utility model discloses an electricity cut-off protector when water free for electric heating devices. The utility model is composed of a resistor R1, a resistor R2, a transistor BG1, a transistor BG2, a relay J1 and a relay J2. A collector electrode and an emitter electrode of the BG1 are respectively connected with a collector electrode and a base electrode of the BG2. A direct current power supply terminal and a base electrode of the BG1 are respectively connected with an electrode and arranged in the designated water level line position in an electric heating device. A coil of J1 is connected in series between the direct current power supply terminal and the collector electrode of the BG1. A connection point of the J1 and the coil of the J2 are connected in series with an input terminal of an alternating current power supply. A connection point of the J2 and a load of the electric heating device are connected in series with the input terminal of the alternating current power supply. The utility model can automatically immediately cut off the power supply when no water is in the electric heating device or the water level is too low. The utility model has the advantages of simple structure, high safety and wide applicability.
Description
The utility model relates to a kind of anhydrous power-off protector that is used for electric calorifie installation.
Electric calorifie installation kind in the market is a lot, for example electric kettle, electric heating bucket, electric furnace seat pot or the like, the main heating target of these electric calorifie installations is a water, in case and the inner anhydrous or water wherein of electric calorifie installation is when having been dryouied, if continuing to power up work, electric calorifie installation is easy to also may cause contingency simultaneously because of the overheated ring electrothermal tube that burns.
The purpose of this utility model be to provide a kind of simple in structure, cost is low, safe and reliable, anhydrous power-off protector that applicability is wide.
The technical solution of the utility model is as follows: the supporting use of the utility model and electric calorifie installation, it is made up of resistance R 1 and R2, triode BG1 and BG2, relay J 1 and J2, wherein the collector and emitter of triode BG1 connects collector electrode and the base stage of BG2, the grounded emitter of BG2 respectively; Be connected with the series loop of resistance R 1 and R2 between DC power supply and ground, the contact of R1 and R2 is connected the base stage of BG1, and dc power supply terminal and BG1 base stage respectively are connected to an electrode and are arranged on the interior designated water level line position of this electric calorifie installation; The coil of serial connection relay J 1 between the collector electrode of dc power supply terminal and BG1, the contact of J1 and the coil tandem of J2 are at ac power input end, and the contact of J2 and this electric calorifie installation load are serially connected in ac power input end.
In the utility model, cross-over connection has capacitor C between DC power supply and ground.
DC power supply of the present utility model can adopt power circuit or the battery that electric main is converted to DC power supply.
Can be in time when the utility model anhydrous or water level in electric calorifie installation is lower than the waterline of defined, the power supply of automatic disconnection electric calorifie installation promptly, thereby avoid the electric calorifie installation accident that burnt out or meet accident; The utility model is simple in structure, and cost is low, and is safe and reliable, is applicable to various electric calorifie installations, as electric kettle, electric heating bucket, electric furnace seat pot or the like, especially is applicable to electric water-heating apparatus.
Further specify the utility model below in conjunction with accompanying drawing.
Fig. 1 is a principle assumption diagram of the present utility model.
As shown in Figure 1, the utility model is considered as an electronic component with the water in the electric calorifie installation, the user can be according to the applicable cases designated water level line of this electric calorifie installation, dc power supply terminal in the utility model and BG1 base stage respectively are connected to an electrode in this waterline position, the resistance of two interelectrode water is made as SHR, and this resistance is in parallel with resistance R 1.When on this waterline water being arranged, the resistance SHR of water and resistance R 1 are in parallel and constitute biasing resistance jointly, and biasing resistance is diminished (less than R1), then make the BG1 conducting, and BG2 is conducting; This moment, the coil J11 of direct current relay J1 got electricly, and the contact J12 adhesive of J1 makes the coil J21 energising of AC relay J2, and then the contact J22 of J2 moves adhesive simultaneously, and main power source closes, and electric calorifie installation load F is in power supply state.When on waterline when anhydrous, the electrode at SHR two ends is an off-state, has only R1 as biasing resistance, and the biasing resistance value is higher than the biasing resistance when on the waterline water being arranged, the base voltage of BG1 drops to BG1 is ended, BG2 also ends simultaneously, the coil J11 outage of J1, and then the contact J12 of J1 disconnects, the coil J21 outage of AC relay J2, the contact J22 of J2 also disconnects simultaneously, primary power source de-energizes, and electric calorifie installation load F is in off-position.
Triode BG1 in the utility model and BG2 mainly are control direct current relay J1, and capacitor C is to be used for filtering, and DC power supply Vcc adopts+12 couchers to make voltage, and resistance R 2 is also as biasing resistance.The contact J22 of electric calorifie installation load F and J2 is serially connected in 220 volts of input Vi of electric main two ends, and J21 and J12 also are serially connected in the Vi two ends.
Claims (2)
1, a kind of anhydrous power-off protector that is used for electric calorifie installation, it is characterized in that it is made up of resistance R 1 and R2, triode BG1 and BG2, relay J 1 and J2, wherein the collector and emitter of triode BG1 connects collector electrode and the base stage of BG2, the grounded emitter of BG2 respectively; Be connected with the series loop of resistance R 1 and R2 between DC power supply and ground, the contact of R1 and R2 is connected the base stage of BG1, and dc power supply terminal and BG1 base stage respectively are connected to an electrode and are arranged on the interior designated water level line position of this electric calorifie installation; The coil of serial connection relay J 1 between the collector electrode of dc power supply terminal and BG1, the contact of J1 and the coil tandem of J2 are at ac power input end, and the contact of J2 and this electric calorifie installation load are serially connected in ac power input end.
2, anhydrous power-off protector according to claim 1 is characterized in that cross-over connection has capacitor C between DC power supply and ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98230719 CN2329108Y (en) | 1998-05-15 | 1998-05-15 | Electricity cut-off protector when water free |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98230719 CN2329108Y (en) | 1998-05-15 | 1998-05-15 | Electricity cut-off protector when water free |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2329108Y true CN2329108Y (en) | 1999-07-14 |
Family
ID=33980286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98230719 Expired - Fee Related CN2329108Y (en) | 1998-05-15 | 1998-05-15 | Electricity cut-off protector when water free |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2329108Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121207A (en) * | 2014-07-30 | 2014-10-29 | 苏州淮通电气有限公司 | Idling alarming submersible pump |
| CN104141617A (en) * | 2014-07-30 | 2014-11-12 | 苏州淮通电气有限公司 | Submersible pump capable of warning about water shortage |
| CN104141614A (en) * | 2014-07-30 | 2014-11-12 | 苏州淮通电气有限公司 | Submersible pump capable of being powered off in absence of water |
-
1998
- 1998-05-15 CN CN 98230719 patent/CN2329108Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121207A (en) * | 2014-07-30 | 2014-10-29 | 苏州淮通电气有限公司 | Idling alarming submersible pump |
| CN104141617A (en) * | 2014-07-30 | 2014-11-12 | 苏州淮通电气有限公司 | Submersible pump capable of warning about water shortage |
| CN104141614A (en) * | 2014-07-30 | 2014-11-12 | 苏州淮通电气有限公司 | Submersible pump capable of being powered off in absence of water |
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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 |