CN201134748Y

CN201134748Y - Heat radiating device

Info

Publication number: CN201134748Y
Application number: CNU200720119432XU
Authority: CN
Inventors: 江长兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-10
Filing date: 2007-04-10
Publication date: 2008-10-15
Anticipated expiration: 2017-04-10

Abstract

The utility model relates to a heat dissipation device, which comprises alternating-current power supply input and a fan, a power supply rectifier module which is connected with an alternating-current power supply and is used to rectify alternating voltage into direct current voltage, a charging control module which is connected with the power supply rectifier module and a voltage storing and conversion module which is connected with the charging control module and the fan and is used to store the voltage and convert the voltage to be suitable for being used by the fan. The device also comprises a power-off detecting module, a time delay control module, a switch control module and a temperature detecting module. The heat dissipation device of the utility model can still continue operating for certain time when a device is abruptly powered off or shut off, when the temperature is over high, the heat dissipation device is started to dissipate heat, thereby not only the device can be rapidly cooled to prolong the service life of the device, but also can play better protection role for users, and furthermore the device has simple structure and very convenient use.

Description

Heat abstractor

Technical field

The utility model relates to the product of voltage technical field, more particularly, relates to a kind of heat abstractor.

Background technology

In various product of voltage, as household electrical appliances, computer and industrial electrical equipment equipment etc., because working voltage as the energy, tends to produce huge heat in its use or operation.The heat that these equipment produce can influence human body safety, and equipment itself is also existed than major injury, can cause shorten equipment life.Therefore, these equipment generally all are provided with heat abstractor, as fin, extraction fan etc., utilize cross-ventilation to disperse heat, to reduce the damage that human body or equipment is caused because of equipment heating.

But when powered-down or power failure, heat abstractor also shuts down thereupon immediately, stops heat sinking function.Like this, remaining heat can only allow it distribute naturally at leisure in the equipment.The process of this natural cooling still can't be avoided the problems referred to above.In addition, existing heat abstractor all is running always during power supply power supply, and no matter the heat that current device distributes how.Like this, the running that can't regulate heat abstractor according to the height of device temperature whether.

The utility model content

The technical problems to be solved in the utility model is, existing heat abstractor shuts down when powered-down or power failure immediately, heat remaining in the equipment can only distribute by natural cooling, and then may influence human body safety and equipment itself is also existed than major injury.Above-mentioned defective at prior art provides a kind of heat abstractor, comprising AC power input and fan; Linking to each other, be used for ac voltage rectifier with the AC power input is the power rectifier module of direct voltage; The charge control module that links to each other with described power rectifier module; Link to each other, be used for stored voltage with described charge control module and described fan and be converted to the voltage that is fit to the voltage that fan uses to store modular converter.

In heat abstractor described in the utility model, further comprise: linking to each other, be used for to survey with described power rectifier module has no-voltage outage detecting module; The time delay control module that links to each other with described outage detecting module, described time delay control module starts timing circuit wherein when described outage detecting module detects no-voltage; Link to each other with described time delay control module and be used to control the switch control module of described fan running.

In heat abstractor described in the utility model, further comprise the temperature detecting module that links to each other with described switch control module, temperature is higher than and/or start described switch control module when equaling threshold value when described temperature detecting module detects, and makes described fan running heat radiation; Close described switch control module when described temperature detecting module detects when temperature is lower than threshold value, described fan is shut down.Described temperature detecting module comprises thermistor PTC.

In heat abstractor described in the utility model, described voltage stores modular converter and comprises battery and voltage transformation module.

In heat abstractor described in the utility model, described power rectifier module comprises diode D1 ~ D4 and capacitor C 1; Described charge control module comprises diode D5, LED 1 and resistance R 1, R2; Described voltage transformation module comprises triode Q1, resistance R 3 and voltage stabilizing didoe ZD1.

In heat abstractor described in the utility model, described outage detecting module comprises diode D6, resistance R 7 and triode Q3; Described time delay control module comprises capacitor C 2 resistance R 4 and triode Q2; Described switch control module comprises triode Q3, Q4 and relay R L1.

Implement heat abstractor of the present utility model, can be when sudden power or shutdown, still sustainable running a period of time; When temperature is still too high, start the heat abstractor running to dispel the heat.Equipment was cooled off fast, prolonged its useful life, also can play the better protection effect the user.In addition, this apparatus structure is simple, and is very easy to use.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the theory diagram of the utility model heat abstractor;

Fig. 2 is the circuit diagram of heat abstractor in preferred embodiment of the utility model.

Embodiment

As shown in Figure 1, be the theory diagram of the utility model heat abstractor.This heat abstractor comprises AC power input and fan.Comprise that also power rectifier module, charge control module and voltage store modular converter.The power rectifier module links to each other with the AC power input, exchanges the input of (AC) power supply and obtain a direct current (DC) voltage after power rectifier.This dc voltage after the charge control module that links to each other with the power rectifier module is controlled, arrives the voltage that links to each other with charge control module again and stores modular converter again.Voltage stores modular converter and comprises battery and voltage transformation module.Battery is used to store the voltage that obtains from charge control module.Voltage transformation module can be fit to the voltage that fan uses with being stored in voltage in the battery by after the DC converting (DC-DC), being converted to, and turns round with drive fan.

This heat abstractor comprises that also linking to each other, be used for detection with the power rectifier module has no-voltage outage detecting module.When the outage detecting module detects no-voltage, then start the time delay control module that links to each other with the outage detecting module.This time delay control module comprises a timing circuit, when timing circuit picks up counting, then starts the switch control module that links to each other with the time delay control module, starts fan running by switch control module and dispels the heat.When the timing of time time-delay timing circuit stopped, then the off switch control module was shut down by switch control module control fan.

This heat abstractor further comprises the temperature detecting module that links to each other with switch control module, and temperature is higher than and/or when equaling threshold value, the starting switch control module makes the fan running heat radiation when the temperature detecting module detects; When the temperature detecting module detected temperature and is lower than threshold value, the off switch control module shut down fan.

As shown in Figure 2, be the circuit diagram of heat abstractor in preferred embodiment of the utility model.Heat abstractor.Behind power connection, AC voltage obtains a dc voltage after diode D1 ~ D4 and capacitor C 1.Diode D1 ~ D4 and capacitor C 1 have been formed the power rectifier module.

Electric current after rectification, is charged to Current Control on the battery BAT behind the charging control circuit that LED 1 and resistance R 1, R2 form via diode D5.Because of electric current flows through R1, LED1 and R2 assembly respectively.When dead battery, need bigger electric current that it is charged, thereby electric current flow through R1, LED1 and the R2 assembly becomes big afterwards, the LED1 lamp is bright; When battery was full of electricity, electric current diminished after flowing through R1, LED1 and R2 assembly, and the LED1 lamp does not work.So the LED1 lamp can be used as the charging indication and uses.Triode Q1, resistance R 3 and voltage stabilizing didoe ZD1 form voltage conversion circuit, can carry out the DC-DC conversion, obtain a suitable fan M1 and use direct voltage.

The electric current and voltage of ordering as C is by D8 during through triode Q1, resistance R 3 and voltage stabilizing didoe ZD1, (DC-DC) can make the running work of the general normality of fan.

Diode D6, resistance R 7 and triode Q3 form the outage detecting module, and capacitor C 2, resistance R 4 and triode Q3 utilize capacitor C 2 charging and discharging principle makeup times to postpone control module.Triode Q3, Q4 and relay R L1 form switch control module.When the B of the triode Q3 utmost point, when promptly the B point was high potential, triode Q3 assembly can't conducting, and Q4 and relay R L1 can't be worked, so K1 disconnects, battery BAT territory voltage conversion circuit can't conducting.When the B point is electronegative potential, Q3, Q4 and the conducting work in succession of relay R L1 assembly, battery BAT connects voltage conversion circuit through K1, makes fan normal operation work.

Electric current to the A point, to capacitor C 2 chargings, and to resistance R 4 and triode Q2 energising, can make triode Q2 conducting through the D7 assembly.If equipment is as yet before the outage, then the B utmost point of triode Q3 is because the relation of diode D6 and resistance R 7 and/or thermistor PTC also is in high voltage, and then triode Q3 can't conducting, and triode Q4 and relay R L1 can't be worked, the fan work of can not turning round.

Work as device powers down, when dc voltage disappeared, the voltage that A is ordered was in high potential because of capacitor C 2. make triode Q2 conducting.Its ON time length is by the discharge constant decision of resistance R 4 and capacitor C 2, and this time can be designed to several minutes.Again because resistance R 7 and R6 no-voltage by the B point, make after the triode Q2 conducting, make resistance R 5 ground connection, B point current potential step-down, Q3, Q4 and the conducting work in succession of RL1 assembly, K1 is provided to fan with battery BAT power supply through triode Q1. and fan running work is continued, after finishing the discharge time of capacitor C 2 and resistance R 4, B point current potential uprises, and triode Q3, Q4 and relay R L1 become and can't work, K1 disconnects voltage conversion circuit for open-circuit cell BAT, so the fan work that shuts down.

When the device shutdown power supply or when having a power failure suddenly during C Dian loss of voltage. capacitor C 3 can provide the operating voltage of triode Q4 and relay R L1 moment. can make the K1 action.

The temperature detecting module is made up of thermistor PTC.The impedance when normal temperature of this thermistor is big, and when environment temperature raise, the impedance of PTC thermistor diminished, and makes B point current potential step-down, triode Q3 conducting, and triode Q4 and relay R L1 conducting K1 in succession connect, and make fan energising running.When environment temperature reduced, it is big that the impedance of PTC thermistor becomes, and B point current potential raises, and triode Q3 and Q4 can't disconnect by conducting work K1, and fan shuts down.The height of this temperature threshold values can be selected according to the requirement of equipment and then by the parameter of thermistor.Usually, this temperature threshold values can be set at 30 ℃-35 ℃.

Heat radiation with computer CPU is an example, and the actual use of this heat abstractor is described.At first the connector with cpu fan is inserted on the joint of heat abstractor, and the connector with heat abstractor is inserted on the power supply unit 4P joint again.Then this heat abstractor can be fixed on the appropriate location.Like this, when computer shutdown or when having a power failure suddenly, the fan that this heat abstractor connects can remain in operation to room temperature, and the life-span of guaranteeing computer CPU is with stable.The installation process of this heat abstractor is simple, and is easy to use, and never destroys the original system structure and the function of computer.In addition, even when this heat abstractor breaks down, but cpu fan operate as normal still, just time-delay control and temperature are surveyed inefficacy.Certainly, this heat abstractor may be used on all equipment and/or product that need dispel the heat, for example, can Application Design on the internal circuit of the power supply unit of main frame use.

Implement heat abstractor of the present utility model, can be when sudden power or shutdown, still sustainable running a period of time; When temperature is too high, start the heat abstractor running to dispel the heat.Equipment was cooled off fast, prolonged its useful life, also can play the better protection effect the user.In addition, this apparatus structure is simple, and is very easy to use.

Claims

1, a kind of heat abstractor comprises AC power input and fan, it is characterized in that, also comprises:

Linking to each other, be used for ac voltage rectifier with the AC power input is the power rectifier module of direct voltage;

The charge control module that links to each other with described power rectifier module;

Link to each other, be used for stored voltage with described charge control module and described fan and be converted to the voltage that is fit to the voltage that fan uses to store modular converter.

2, heat abstractor according to claim 1 is characterized in that, further comprises:

Link to each other, be used for detection with described power rectifier module no-voltage outage detecting module is arranged;

The time delay control module that links to each other with described outage detecting module, described time delay control module starts timing circuit wherein when described outage detecting module detects no-voltage;

Link to each other with described time delay control module and be used to control the switch control module of described fan running.

3, heat abstractor according to claim 2, it is characterized in that, further comprise the temperature detecting module that links to each other with described switch control module, temperature is higher than and/or start described switch control module when equaling threshold value when described temperature detecting module detects, and makes described fan running heat radiation; Close described switch control module when described temperature detecting module detects when temperature is lower than threshold value, described fan is shut down.

4, heat abstractor according to claim 3 is characterized in that, described temperature detecting module comprises thermistor PTC.

5, heat abstractor according to claim 1 is characterized in that, described voltage stores modular converter and comprises battery and voltage transformation module.

According to each described heat abstractor of claim 1-5, it is characterized in that 6, described power rectifier module comprises diode D1 ~ D4 and capacitor C 1; Described charge control module comprises diode D5, LED 1 and resistance R 1, R2; Described voltage transformation module comprises triode Q1, resistance R 3 and voltage stabilizing didoe ZD1.

7, heat abstractor according to claim 6 is characterized in that, described voltage transformation module. battery BAT and described DC power supply are isolated by diode D8.