CN1164770A - Temp. controlled power-off protective and alarm circuit - Google Patents
Temp. controlled power-off protective and alarm circuit Download PDFInfo
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- CN1164770A CN1164770A CN 96103366 CN96103366A CN1164770A CN 1164770 A CN1164770 A CN 1164770A CN 96103366 CN96103366 CN 96103366 CN 96103366 A CN96103366 A CN 96103366A CN 1164770 A CN1164770 A CN 1164770A
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Abstract
A temp.-controlled power-off portective and alarm circuit capable of preventing service electrical appliance from burning out by limitless heating-up under the condition of abnormal state is composed of temp. transfer portion, temp.-control relay and alarm circuit. Said invention uses the limited temp. to control switching-on and switching-off of main circuit of the electrical appliance, and uses the switching-on and switching-off to give the alarm. Said invented circuit can be in the preparatory state of protection and giving the alarm under the normal condition, it has no energy consumption. It is less in used component parts, low in cost and reliable in performance and durable.
Description
The present invention a kind ofly prevents that the improper intensification of electric equipment commonly used from burning, power-off protection automatically, and send the temperature control protective circuit of warning.
Various pressurizers in people's daily life, voltage regulator, charger, inverter etc.; Electric welding machine in the production work, stabilized voltage power supply, auto-transformer etc.In actual use, because the electronic component in improper use or the circuit damages, will cause the unlimited intensification of the improper property of electrical equipment.If not instant powered-down will cause the key original paper-inductance winding in the electric equipment to burn.This element accounts for the 40-80% of above-mentioned electric equipment total cost.Add to be subjected to technical data that the restriction of equipment accessory and condition makes it maintenance and inconvenient.Often complete machine is discarded.Few person loses 110 yuan.Many persons lose tens thousand of units.
Purpose of the present invention exactly in order to solve the problem of above-mentioned aspect, has designed a temperature control protective device very simple and practical and cost is low.When the temperature rising of electrical equipment, when surpassing limit value, this device is power-off protection automatically, and sends alarm signal.
The object of the present invention is achieved like this.With a temperature control normally closed relay, be fixed on the most active position of variations in temperature or device in the electric equipment (magnetic core or line as inductance element are wrapped).And, be connected on the major loop in the electric equipment the contact circuit of relay.Open close with limiting temperature (scope is spent positive 20000 degree in Fahrenheit negative 1000) control relay contact as requested.Open close with relay tip, control apparatus equipment major loop open close.Thereby played the protective effect of temperature control.
Temperature relay opens control, after the contact automatic disconnection.The voltage drop of major loop will drop on relay tip two, and warning circuit be with this as power supply, start working, send alarm signal.If the relay tip closure, just the two poles of warning circuit is in short-circuit condition.So this temperature control power-off protection, warning circuit, under normal conditions, the preparation protection in the alarm condition, does not have electric energy loss.
Warning form commonly used has: the light chimes of doom is reported to the police and sound and light alarm.
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1, be block diagram of the present invention.
Fig. 2, be the enforcement figure of inductance element temperature control protection.
Fig. 3, be optical alarm circuit reference circuit figure.
Fig. 4, be sound light alarming circuit reference circuit figure.
Among Fig. 1, variations in temperature is enlivened position or device in 1 electrical equipment.2 thermorelays.3 warning circuits.
In Fig. 1, when electrical equipment is in improper unlimited soaking condition, temperature by ' variations in temperature is enlivened position or device in the electrical equipment ' be delivered to ' on the thermorelay ' when variations in temperature during to limiting temperature ' thermorelay ' open control, contact disconnects.Thereby cut off the electric equipment major loop.The continuation that power consumption is disappeared and limited temperature is risen.Cover and exempted from device and burn.After the thermorelay contact disconnected, main circuit voltage all dropped on thermorelay contact two ends.Because the power supply of warning circuit obtains from thermorelay contact two ends, so this moment, warning circuit obtained power supply, start working, signal gives the alarm.
In Fig. 2, constitute the major loop of electric equipment by E, G, O, E.K τ ° is thermorelay.C, D are the binding posts at thermorelay contact two ends.CA and DB are the lead-out wires at thermorelay contact two ends, just the power supply supply lines of alarm.
In Fig. 3, A ' B ' two is the warning circuit power input.R, C, D, DV constitute flash alarm.Wherein DV is the flicker light-emitting diode.
In Fig. 4, A " B " two is the warning circuit power input.Constitute transformation rectification circuit R by TD
1, DV constitutes flash alarm circuit.(wherein DV is the flicker light-emitting diode), R
2R
3IC, B, C, BG constitute sound alarm circuit.
In Fig. 4, if remove R in the circuit
1And DV, be a sound alarm circuit.
Claims (4)
1, a kind of novel temperature control power-off protection; warning circuit; it is by the temperature transfer part; temperature relay and warning circuit constitute; it is characterized in that utilizing variations in temperature sensitive part or parts in the electrical equipment; respond to a normally closed thermostat relay that is connected in the electrical equipment major loop, according to the temperature that limits, the break-make of control apparatus major loop.
2,, it is characterized in that temperature relay is mounted on the responsive to temperature position of electrical equipment or the parts according to described in the claim 1.
3, according to described in the claim 1, the power supply that it is characterized in that warning circuit is to be connected on the binding post at temperature relay contact two.
4,, it is characterized in that the scope of limiting temperature is spent positive 20000 degree in Fahrenheit negative 1000 according to described in the claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96103366 CN1164770A (en) | 1996-05-02 | 1996-05-02 | Temp. controlled power-off protective and alarm circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96103366 CN1164770A (en) | 1996-05-02 | 1996-05-02 | Temp. controlled power-off protective and alarm circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1164770A true CN1164770A (en) | 1997-11-12 |
Family
ID=5118024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96103366 Pending CN1164770A (en) | 1996-05-02 | 1996-05-02 | Temp. controlled power-off protective and alarm circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1164770A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049075C (en) * | 1998-05-15 | 2000-02-02 | 青岛高科技工业园金斯达通信开发有限公司 | Realizing method and device for protecting and warning when resistance of security device losing efficacy |
| CN103116105A (en) * | 2013-02-27 | 2013-05-22 | 苏州热工研究院有限公司 | Fuse protector life test system with overheating protection and warning function |
| CN103487761A (en) * | 2013-09-27 | 2014-01-01 | 国家电网公司 | Temperature control testing device for lithium ion battery |
| CN104298274A (en) * | 2013-07-17 | 2015-01-21 | 鸿合科技有限公司 | Temperature control system and temperature control method |
-
1996
- 1996-05-02 CN CN 96103366 patent/CN1164770A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049075C (en) * | 1998-05-15 | 2000-02-02 | 青岛高科技工业园金斯达通信开发有限公司 | Realizing method and device for protecting and warning when resistance of security device losing efficacy |
| CN103116105A (en) * | 2013-02-27 | 2013-05-22 | 苏州热工研究院有限公司 | Fuse protector life test system with overheating protection and warning function |
| CN104298274A (en) * | 2013-07-17 | 2015-01-21 | 鸿合科技有限公司 | Temperature control system and temperature control method |
| CN104298274B (en) * | 2013-07-17 | 2016-06-22 | 鸿合科技有限公司 | A kind of temperature control system and Temp. control method |
| CN103487761A (en) * | 2013-09-27 | 2014-01-01 | 国家电网公司 | Temperature control testing device for lithium ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |