CN201927858U

CN201927858U - Thermoelectric intelligent fireproof socket

Info

Publication number: CN201927858U
Application number: CN201120003591XU
Authority: CN
Inventors: 许虎; 施朝健; 赵冰洁
Original assignee: Shanghai Maritime University
Current assignee: Shanghai Maritime University
Priority date: 2011-01-07
Filing date: 2011-01-07
Publication date: 2011-08-10
Anticipated expiration: 2021-01-07

Abstract

The utility model relates to a thermoelectric intelligent fireproof socket, wherein a temperature protection circuit is added on the socket and the temperature protection circuit comprises a single chip microcomputer, a temperature sensor and the like. The temperature sensor (4) is added onto a panel of the socket (5) and a voltage dropping circuit (6), a relay (3) and the single chip microcomputer (2) are added into the socket (5). A control signal output end of the single chip microcomputer (2) is connected with an input end of the relay (3); the signal output end of the temperature sensor (4) is connected with the signal input end of the single chip microcomputer (2). The temperature sensor is used for sensing environmental temperature; signals are transmitted to the single chip microcomputer; the single chip microcomputer judges temperature difference per unit time and judges the heat radiating situation of an electrical apparatus according to the temperature difference; if the temperature difference per unit time is too large (for example the temperature rise exceeds 3 degrees centigrade per second) or exceeds the warning temperature. i.e. 70 degrees centigrade, the single chip microcomputer controls and cuts off a power supply of the socket and stops supplying power for the electrical apparatus; when the temperature declines, the power of the electrical apparatus is restored through the single chip microcomputer. In this way, a circuit is monitored and controlled effectively and the fire prevention aim is achieved.

Description

Thermal type intelligent fire-proofing socket

Technical field

The utility model relates to a kind of electrical equipment, particularly a kind of socket.

Background technology

Present existing fireproof socket probably can be divided into two kinds:

1, overcurrent protection formula; 2, the super warning protection of temperature.

The principle that realizes the fireproof socket of overcurrent protection is when having detected big electric current in circuit, to cut off circuit power, makes no longer heating power of electrical appliance, thereby realizes the fireproof purpose.But its weak point: can not recover automatically after cutting off circuit; And use small-power heating electrical equipment such as electric mosquito repellent, shoe drier etc. on the socket, and operate as normal can not produce the electrical equipment of big electric current, and the fireproof socket of overcurrent protection formula does not just have protective effect.When the heat that sends when above similar electrical equipment can't scatter and disappear for some reason, temperature is risen rapidly cause fire.

The super warning protection of temperature socket: what adopt at present is bimetal leaf, utilizes the theory of mechanics control circuit break-make of thermal expansion, and the deficiency place of this socket is that poor sensitivity, accuracy are not high.

The utility model content

The purpose of this utility model provides a kind of thermal type intelligent fire-proofing socket device; the technology that is adopted both can remedy overcurrent protection formula fireproof socket can not recover, can not monitor the problems such as fire of the heating electrical equipment of little electric current (small-power) because of the bad initiation of dispelling the heat automatically; problems such as it is low also can to remedy the sensitivity of thermally expansive flameproof protection socket, and accuracy is not high.

The utility model principle that is adopted of dealing with problems is: utilize the temperature sensor senses ambient temperature, temperature signal is passed to processor, processor is judged the temperature difference in the unit interval, judge the heat dissipating state of electrical appliance according to temperature difference, as the temperature difference in: unit interval excessive (rise surpass 3 degrees centigrade of per seconds as temperature) or surpass 70 degrees centigrade of warning temperature, processor control, cut-out socket power stop to electric power supply, and processor recovers electric power supply again when temperature descends.So just well monitoring, control circuit reach the purpose that prevents that fire from taking place.

The following Fig. 2 of the technical scheme that its technical problem that solves the utility model socket adopts:

Add specific temperature protection circuit on common socket 5, temperature protection circuit comprises main power source 1, single-chip microcomputer 2, relay 3, temperature sensor 4, reduction voltage circuit 6.Reload temperature transducer 4 on socket 5 panels installs reduction voltage circuit 6, relay 3, single-chip microcomputer 2 additional in socket 5 inside.

Single-chip microcomputer 2 control signal output ends are received the input of relay 3; The signal output part of temperature sensor 4 is received the signal input part of single-chip microcomputer 2.

Its operation principle is:

After reducing to dc low-voltage, main power source 1 power taking supplies with single-chip microcomputer 2 uses.After the utility model socket inserted power supply, single-chip microcomputer 2 began to control entire circuit work: temperature sensor 4 was surveyed the temperature of a surrounding environment in per 20 seconds, and data are passed to single-chip microcomputer 2, and the temperature of 2 pairs of feedbacks of single-chip microcomputer is judged respectively:

1, if temperature above 70 ℃.Illustrate that dispel the heat undesired this moment single-chip microcomputer of electrical appliance 2 sends signal, make relay 3 open circuits, at this moment the electrical appliance on the common socket 5 will cut off the power supply and no longer work, treat that temperature reduces to below 60 ℃, single-chip microcomputer 2 sends signal once more, relay 3 is connected circuit, and the electrical appliance on the common socket 5 is resumed work again.

2, if the temperature of surveying is less than or equal to 70 ℃, but double temperature difference Δ T is greater than 5 ℃ (promptly 20 seconds twice thermometric at interval, then once subtract previous temperature difference Δ T＞5 ℃), illustrate electrical appliance generate heat excessive or dispel the heat undesired.This moment, single-chip microcomputer 2 control relays 3 open circuits were connected after 60 seconds again, so just can make the electrical appliance timely distribute heat that temporarily quits work.

3, if the temperature of surveying less than 70 ℃, Δ T is less than or equal to 5 ℃, heat radiation be described normally, at this moment single-chip microcomputer 2 allows circuit conducting always, the electrical appliance operate as normal.

Beneficial effect

1, temperature monitoring is accurate, is swift in response, and can well detect the generation of fire preventing to ambient temperature;

2, remedied the function that general temperature control socket does not have automatic recovery energising; Also remedied the overcurrent protection socket, the fire that the circuit thermal effect causes in the time of can not detecting electric current and do not transship; It is slow in reacting also to have remedied ordinary hot expansion switch, poor practicability, defective such as sensitivity is low;

3, usefulness method is easy.Plug and play and use common socket are as good as.

Description of drawings

Further specify the utility model below in conjunction with accompanying drawing and case study on implementation.

Fig. 1 the utility model schematic diagram;

Fig. 2 the utility model circuit diagram.

Number in the figure

1, main power source 2, single-chip microcomputer 3, relay 4, temperature sensor

5, common socket 6, reduction voltage circuit

Embodiment

Below by case study on implementation, further specify the utility model.

Reload temperature transducer on the common socket panel installs step-down transformer additional in socket inside; Relay; Single-chip microcomputer;

Connected mode:

As Fig. 2, with single-chip microcomputer, relay, the power supply of temperature sensor connect the direct current 5V output of step-down transformer; The control signal output ends of single-chip microcomputer is received the input of relay; The signal output part of temperature sensor is received the signal input part of single-chip microcomputer; At last the power of transformer input is inserted the 220V AC power.

Operation principle:

The variations in temperature of the electrical appliance on socket panel (as charger for mobile phone), temperature sensor on the socket panel passes to single-chip microcomputer with the variations in temperature signal, single-chip microcomputer is made judgement according to variations in temperature, when variations in temperature to certain condition (as temperature too high or specific temperature rise is too high), single-chip microcomputer just sends control signal, and control relay cuts off the power supply of electrical appliance.Reach the purpose of flameproof protection.

Situation 1: if temperature is above 70 ℃.Illustrate that dispel the heat undesired this moment single-chip microcomputer of electrical appliance 2 sends signal, make relay 3 open circuits at this moment the electrical appliance on the common socket 5 will cut off the power supply and no longer work, treat that temperature reduces to below 60 ℃, single-chip microcomputer 2 sends signal once more, relay 3 is connected circuit, and the electrical appliance on the common socket 5 is resumed work again.

Situation 2: if the temperature of surveying is less than or equal to 70 ℃, but double temperature difference Δ T is greater than 5 ℃ (promptly 20 seconds twice thermometric at interval, then once subtract previous temperature difference Δ T＞5 ℃), illustrate electrical appliance generate heat excessive or dispel the heat undesired.This moment, single-chip microcomputer 2 control relays 3 open circuits were connected after 60 seconds again, so just can make the electrical appliance timely distribute heat that temporarily quits work.

If the temperature of surveying is less than 70 ℃, Δ T is less than or equal to 5 ℃, heat radiation be described normally, and at this moment single-chip microcomputer 2 allows circuit conducting always, the electrical appliance operate as normal.

Claims

1. thermal type intelligent fire-proofing socket; comprise socket; it is characterized in that: on described socket (5), add specific temperature protection circuit; temperature protection circuit comprises main power source (1), single-chip microcomputer (2), relay (3), temperature sensor (4), reduction voltage circuit (6); reload temperature transducer on socket (5) panel installs reduction voltage circuit (6), relay (3), single-chip microcomputer (2) additional in socket (5) inside.

2. socket according to claim 1 is characterized in that: described single-chip microcomputer (2) control signal output ends is received the input of relay (3); The signal output part of temperature sensor (4) is received the signal input part of single-chip microcomputer (2).