CN203189301U - Overheat protection device and electronic device with overheat protection function - Google Patents
Overheat protection device and electronic device with overheat protection function Download PDFInfo
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- CN203189301U CN203189301U CN 201320138401 CN201320138401U CN203189301U CN 203189301 U CN203189301 U CN 203189301U CN 201320138401 CN201320138401 CN 201320138401 CN 201320138401 U CN201320138401 U CN 201320138401U CN 203189301 U CN203189301 U CN 203189301U
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Abstract
The utility model discloses an overheat protection device and have overheat protection function's electron device. The overheat protection device is connected with the electronic device and comprises a cooling fan module and a control module, wherein the cooling fan module is provided with a cooling fan, the cooling fan is provided with a fan control coil, the cooling fan module generates a fan coil signal for driving the cooling fan, and the control circuit controls the electronic device to operate at a higher first operating power or a lower second operating power according to the fan coil signal. Therefore, the utility model discloses can slow down the speed that electron device produced heat energy when radiator fan trouble.
Description
Technical field
The utility model is about a kind of overtemperature protection system, especially about utilizing radiation fan to get rid of the overtemperature protection system of heat energy and the electronic equipment with overheat protective function.
Background technique
Various electronic equipments are universalness day by day along with scientific and technological progress; and the function of various electronic equipments is horn of plenty more; those electronic equipments comprise illumination lamp; host computer; mobile phone; Digital Television; projector or panel computer etc.; in the process of those electronic equipment runnings; and electronic components such as the central processing unit of electronic equipment inside and bulb operate and generation heat energy; influenced by heat energy and the situation of burning for fear of electronic equipment; electronic equipment inside can be provided with an overtemperature protection system; in order to get rid of the heat energy of electronic equipment inside; to reach cool effect; generally speaking; overtemperature protection system is radiating fin; heat radiation conduit or radiation fan; wherein radiating fin and heat radiation conduit do not need with external motivational drive; it belongs to the passive heat radiation means; and or radiation fan need be with external motivational drive, it belongs to active heat dissipation.
Because the function of electronic equipment is become stronger day by day, make that electronic components such as central processing unit that it is inner and bulb must be with higher frequency of okperation running, the heat energy that makes those electronic component runnings produce is also bigger thereupon, therefore, only adopt the passive heat radiation means can't in time get rid of heat energy, must adopt active heat dissipation or the passive heat radiation means active heat dissipation of arranging in pairs or groups to get rid of heat energy simultaneously.That is to say that radiation fan is a key of getting rid of heat energy in the electronic equipment.
Generally speaking, be shorter than the working life of above-mentioned electronic component the working life of radiation fan, and therefore, radiation fan very likely blocks when the electronic component normal operation, fault or damage.And radiation fan generally is arranged in the casing of electronic equipment, and the user must dismantle casing just can find radiation fan fault or damage, so the heat energy that electronic component produces can't be got rid of in real time, it will cause temperature of electronic component to rise and burn.
Yet, above-mentioned prior art is to detect the temperature of central processing unit by setting up temperature-sensing device, but the factor that the central processing unit temperature rises is numerous, be not that inevitable fault by radiation fan or damage institute cause, that is its prior art can't directly react the operation situation of radiation fan, and increases the cost that temperature-sensing device is set.
In order to address the above problem, prior art provides a kind of electronic equipment with overheat protective function.See also Fig. 1, it is existing block schematic diagram with electronic equipment of overheat protective function.Existing electronic equipment 1 comprises an electronic component 10, a heat radiation fan module 11 and a control module 12, and heat radiation fan module 11 comprises a radiation fan 111 and a fans drive and control module 112, and radiation fan 111 has a fan control coil 1111, and wherein fan control coil 1111 comprises a N utmost point control coil and a S utmost point control coil.Fans drive and control module 112 outputs one fan loop signal S1 give fan control coil 1111 and drive radiation fan 111 rotations, to get rid of the heat energy that electronic component 10 is produced.Wherein, fan loop signal S1 can comprise in order to a N polar curve ring signal of controlling aforementioned N utmost point control coil and S utmost point control coil and in the S polar curve ring signal at least one.
Simultaneously, radiation fan 111 is exported the fan running decision circuitry 1121 that an operating condition signal D gives fans drive and control module 112 in response to its rotary state, makes fan running decision circuitry 1121 give control module 12 according to a rotation detection signal RD or the rotational frequency signal FG that operating condition signal D exports corresponding to this operating condition signal D.Next, control module 12 is judged whether normal operation of radiation fan 111 according to received rotation detection signal RD or rotational frequency signal FG, when control module 12 is judged radiation fans 111 normal operations, and its control electronic component 10 normal operations.Otherwise, judge that radiation fans 111 block or rotating speed when significantly reducing when control module 12, its control electronic component 10 produces the speed of heat energy with lower running power running to slow down electronic component 10 runnings.
Yet, just in case when fan running decision circuitry 1121 faults, for example, radiation fan 111 is to be in a normal operation state, yet fan running decision circuitry 1121 but may break down because of some electronic component wherein, and when making the rotation detection signal RD that exports or rotational frequency signal FG demonstration radiation fan 111 be in the erroneous judgement state of " unusually ", this shows will make control module 12 control electronic components 10 mistakes operate with lower running power, and the situation of misoperation takes place.
Therefore, how to propose more to have the fan-status detecting mechanism of reliability, handle the overtemperature protection of electronic equipment, be the emphasis place that the utility model is made great efforts improvement.
The model utility content
The technical problems to be solved in the utility model is, at the prior art above shortcomings, and the electronic equipment that a kind of overtemperature protection system of not judging by accident is provided and has overheat protective function.
The technological scheme that its technical problem that solves the utility model adopts provides a kind of overtemperature protection system, overheated in order to prevent an electronic equipment, this overtemperature protection system comprises heat radiation fan module and control module, wherein, this heat radiation fan module is close to this electronic equipment setting or be arranged in this electronic equipment, this heat radiation fan module comprises radiation fan and fans drive and the control module with a fan control coil, this radiation fan is close to this electronic equipment setting or be arranged in this electronic equipment, gets rid of the heat energy that this electronic equipment running produces in order to rotation; This fans drive and control module are connected in this fan control coil, give this fan control coil and drive this radiation fan rotation in order to export a fan loop signal; This control module is connected in this heat radiation fan module and this electronic equipment, in order to receiving this fan loop signal, and controls this electronic equipment with one first running power or one second running power running according to this fan loop signal; Wherein this first running power is greater than this second running power.
Preferably, this fan loop signal that this control module is exported in this fans drive and control module is during more than or equal to one first voltage threshold value, judge that this fan loop signal is a high logic level signal, and control this electronic equipment with this first running power running according to this high logic level signal; And this fan loop signal that this control module is exported in this fans drive and control module is during less than one second voltage threshold value, judge that this fan loop signal is a low logic level signal, and control this electronic equipment with this second running power running according to this low logic level signal.
Preferably, this first voltage threshold value is identical with this second voltage threshold value; Or this first voltage threshold value is different with this second voltage threshold value.
Preferably, this overtemperature protection system also comprises the caution element, and this caution element is connected in this control module, produces an alarm signal when being used to receive this low logic level signal.
Preferably, this control module comprises detecting and decision circuitry and control circuit, wherein, this detecting and decision circuitry are connected in this fan control coil, when being used to receive this fan loop signal this fan loop signal is carried out rectification and produces a rectified signal, and the one first running signal of exporting corresponding to this rectified signal according to this rectified signal or one second operates signal; This control circuit is connected in this detecting and decision circuitry and this electronic equipment, in order to receiving this first running signal or this second running signal, and control this electronic equipment with this first running power or this second running power running according to this first running signal or this second running signal.
Preferably, when this detecting and decision circuitry are judged this rectified signal more than or equal to one first voltage threshold value, this detecting and decision circuitry judge that this rectified signal is a high logic level signal, and export this first running signal according to this high logic level signal, make this control circuit control this electronic equipment with this first running power running according to this first running signal; And when this detecting and decision circuitry are judged this rectified signal less than one second voltage threshold value, this detecting and decision circuitry judge that this rectified signal is a low logic level signal, and export this second running signal according to this low logic level signal, make this control circuit control this electronic equipment with this second running power running according to this second running signal.
Preferably, this first voltage threshold value is identical with this second voltage threshold value; Or this first voltage threshold value is different with this second voltage threshold value.
Preferably, this fans drive and control module comprise the fan running decision circuitry, this fan running decision circuitry is connected in this fan control coil and this control module, judge the rotary state of this radiation fan in order to a rotary state signal of exporting according to this radiation fan, and a rotation detection signal or the rotational frequency signal exported corresponding to this rotary state signal give this control module.
Preferably, this electronic equipment comprises an electronic component, this electronic component is arranged in this electronic equipment, this electronic component running and produce this heat energy, and this electronic component be corresponding to illumination lamp a bulb, corresponding to a host board of host computer, corresponding to a communication chip of mobile phone, corresponding to a display floater of Digital Television, corresponding to a projection lamp source of projector, corresponding in the microprocessor of panel computer at least one.
The utility model also provides a kind of electronic equipment with overheat protective function, and it comprises electronic component, heat radiation fan module and control module, and wherein, this electronic component is arranged in this electronic equipment; This heat radiation fan module is arranged in this electronic equipment and close to this electronic component, this heat radiation fan module comprises radiation fan and fans drive and the control module with a fan control coil, this radiation fan is arranged in this electronic equipment and close to this electronic component, gets rid of the heat energy that this electronic component running produces in order to rotation; This fans drive and control module are connected in this fan control coil, give this fan control coil and drive this radiation fan rotation in order to export a fan loop signal; This control module is connected in this heat radiation fan module and this electronic equipment, in order to receiving this fan loop signal, and controls this electronic component with one first running power or one second running power running according to this fan loop signal; Wherein this first running power is greater than this second running power.
Preferably, this fan loop signal that this control module is exported in this fans drive and control module is during more than or equal to one first voltage threshold value, judge that this fan loop signal is a high logic level signal, and control this electronic component with this first running power running according to this high logic level signal; And this fan loop signal that this control module is exported in this fans drive and control module is during less than one second voltage threshold value, judge that this fan loop signal is a low logic level signal, and control this electronic component with this second running power running according to this low logic level signal.
Preferably, this first voltage threshold value is identical with this second voltage threshold value; Or this first voltage threshold value is different with this second voltage threshold value.
Preferably, this electronic equipment also comprises the caution element, and this caution element is connected in this control module, produces an alarm signal when being used to receive this low logic level signal.
Preferably, this control module comprises detecting and decision circuitry and control circuit, wherein, this detecting and decision circuitry are connected in this fan control coil, when being used to receive this fan loop signal this fan loop signal is carried out rectification and produces a rectified signal, and the one first running signal of exporting corresponding to this rectified signal according to this rectified signal or one second operates signal; This control circuit is connected in this detecting and decision circuitry and this electronic component, in order to receiving this first running signal or this second running signal, and control this electronic component with this first running power or this second running power running according to this first running signal or this second running signal.
Preferably, when this detecting and decision circuitry are judged this rectified signal more than or equal to one first voltage threshold value, this detecting and decision circuitry judge that this rectified signal is a high logic level signal, and export this first running signal according to this high logic level signal, make this control circuit control this electronic component with this first running power running according to this first running signal; And when this detecting and decision circuitry are judged this rectified signal less than one second voltage threshold value, this detecting and decision circuitry judge that this rectified signal is a low logic level signal, and export this second running signal according to this low logic level signal, make this control circuit control this electronic component with this second running power running according to this second running signal.
Preferably, this first voltage threshold value is identical with this second voltage threshold value; Or this first voltage threshold value is different with this second voltage threshold value.
Preferably, this fans drive and control module comprise the fan running decision circuitry, this fan running decision circuitry is connected in this fan control coil and this control module, judge the rotary state of this radiation fan in order to a rotary state signal of exporting according to this radiation fan, and a rotation detection signal or the rotational frequency signal exported corresponding to this rotary state signal give this control module.
Preferably, this electronic equipment is at least one in illumination lamp, host computer, mobile phone, Digital Television, projector and the panel computer, and this electronic component be corresponding to this illumination lamp a bulb, corresponding to a host board of this host computer, corresponding to a communication chip of this mobile phone, corresponding to a display floater of this Digital Television, corresponding to a projection lamp source of this projector, corresponding in the microprocessor of this panel computer at least one.
The utility model overtemperature protection system and the electronic equipment with overheat protective function can be judged whether normal operation of radiation fan according to the fan loop signal that drives radiation fan; and the control electronic component operates with lower running power when its improper running, to slow down the speed of electronic component generation heat energy.Owing to overtemperature protection system is that the operating condition of directly detecting radiation fan judges whether the temperature of electronic equipment is overheated, so the situation that can judge by accident because of the other electron component fault in fans drive and the control module not.Simultaneously, the utility model can directly carry out corresponding running according to the fan loop signal that exports the fan control coil to, and it can not judged by accident because of the factor of other detecing element fault, therefore has higher reliability.
Description of drawings
Fig. 1 is existing block schematic diagram with electronic equipment of overheat protective function.
Fig. 2 is the utility model overtemperature protection system is connected in electronic equipment in first preferred embodiment block schematic diagram.
Fig. 3 is the utility model overtemperature protection system is connected in electronic equipment in second preferred embodiment block schematic diagram.
Fig. 4 is the block schematic diagram of electronic equipment in the 3rd preferred embodiment that the utlity model has overheat protective function.
Fig. 5 is the block schematic diagram of electronic equipment in the 4th preferred embodiment that the utlity model has overheat protective function.
Embodiment
In view of the defective of prior art, the electronic equipment that the utility model provides a kind of overtemperature protection system and has overheat protective function.See also Fig. 2, it is connected in the block schematic diagram of electronic equipment in first preferred embodiment for the utility model overtemperature protection system.Fig. 2 demonstrates an overtemperature protection system 2 and an electronic equipment 3, and electronic equipment 3 has an electronic component 31, and its electronic component 31 operates and generation heat energy.Overtemperature protection system 2 is connected in electronic component 31, and is overheated because of the heat energy that its inside produces in order to prevent electronic equipment 3.
In this preferred embodiment, electronic equipment 3 is in one/high-power LED bulb or LED light fixture, and electronic component 31 is LED lamp plate wherein; In another preferred embodiment, electronic equipment is host computer, and electronic component then is the host board corresponding to host computer; Or in another preferred embodiment, electronic equipment also can adopt panel computer or mobile phone, and electronic component then is corresponding to the microprocessor of panel computer or corresponding to the communication chip of mobile phone.
Among Fig. 2, fans drive and control module 212 are connected in fan control coil 2111, give fan control coil 2111 in order to export a fan loop signal S2, rotate and drive radiation fan 211, wherein fan loop signal S2 comprises in order to a N polar curve ring signal of controlling aforementioned N utmost point control coil and S utmost point control coil and in the S polar curve ring signal at least one.Control module 22 is connected in the electronic component 31 of heat radiation fan module 21 and electronic equipment 3, in order to receive the fan loop signal S2 that fans drive and control module 212 are exported, and control the electronic component 31 of electronic equipment 3 according to fan loop signal S2 with one first running power or one second running power running, wherein the first running power is greater than the second running power.In this preferred embodiment, the first running power is that 100%, the second running power then is 50%.
Need benly be, of the present utility model one preferable way, fans drive and control module 212 can be formed by an intergrated circuit, and the pin of fan loop signal S2 in aforementioned intergrated circuit directly exports control module 22 to.
Among Fig. 2, when fans drive and control module 212 desires driving radiation fan 211, fans drive and control module 212 output fan loop signal S2, and this fan loop signal S2 transfers to radiation fan 211 by fan control coil 2111, radiation fan 211 is rotated and gets rid of the heat energy that electronic component 31 produces.Simultaneously, radiation fan 211 outputs one rotary state signal D gives fans drive and control module 212, and rotary state signal D is corresponding to the rotary state of radiation fan 211, for the rotary state of fans drive and control module 212 judgement radiation fans 211, for example rotating speed height etc.On the other hand, N polar curve ring signal S21 in fan loop signal S2 is transferred to control module 22, and N polar curve ring signal S21 is during more than or equal to one first voltage threshold value, control module 22 judges that this N polar curve ring signal S21 is a high logic level signal, and controls electronic component 31 with this first running power running according to this high logic level signal.
When fans drive and control module 212 receive rotary state signal D, judge the magnitude relationship of rotary state signal D and fan loop signal S2, when rotary state signal D equals fan loop signal S2, expression radiation fan 211 normal rotation are so fans drive continues the identical fan loop signal S2 of output with control module 212.And as rotary state signal D during less than fan loop signal S2, expression radiation fan 211 may block or reduces because of overheated rotating speed because foreign object enters, so export less fan loop signal S2, that is, the fan loop signal S2 that this fan loop signal S2 exports when equaling fan loop signal S2 less than rotary state signal D.
As the less fan loop signal S2 of fans drive and control module 212 outputs, and this fan loop signal S2 transfers to radiation fan 211 by fan control coil 2111, and radiation fan 211 is rotated.Simultaneously, radiation fan 211 output rotary state signal D give fans drive and control module 212, and rotary state signal D is corresponding to the rotary state of radiation fan 211.On the other hand, N polar curve ring signal S21 in fan loop signal S2 is transferred to control module 22, and N polar curve ring signal S21 is during still more than or equal to the first voltage threshold value, control module 22 judges that this N polar curve ring signal S21 is high logic level signal, and controls electronic component 31 still with this first running power running according to this high logic level signal.
Fans drive and control module 212 are exported less another fan loop signal S2* according to above-mentioned running repeatedly, simultaneously, radiation fan 211 another rotary state signal of output D* give fans drive and control module 212, and another rotary state signal D* is corresponding to the rotary state of radiation fan 211.As another N polar curve ring signal S21* among another fan loop signal S2* during less than one second voltage threshold value, control module 22 judges that this another N polar curve ring signal S21* are low logic level signal, and controls electronic component 31 according to this low logic level signal and change to this second running power running.Wherein, the aforementioned first voltage threshold value and the aforementioned second voltage threshold value are the driving voltage value of radiation fan 211 normal operations, and the aforementioned first voltage threshold value and the aforementioned second voltage threshold value can be adjusted according to the running characteristic of different radiation fans 211.In this preferred embodiment, the aforementioned first voltage threshold value and the second voltage threshold value are same voltage threshold value.
What need special instruction is that the fans drive in the utility model overtemperature protection system 2 and control module 212 and control module 22 can be arranged on the same circuit board; Certainly, aforementioned fans drive and control module 212 and control module 22 also can be arranged on the various boards according to demand and respectively, for example, heat radiation fan module 21 is independently module components, its inside comprises a circuit board that is provided with fans drive and control module 212 at least, with the radiation fan 211 that is electrically connected on fans drive and control module 212, in addition, 22 of control modules are arranged on other the circuit board.Be with, above-mentioned various mode of executions all can be contained in the concept of the utility model overtemperature protection system 2.
According to as can be known above-mentioned; the utility model overtemperature protection system 2 can be according to the fan loop signal S2(or another fan loop signal S2* that drive radiation fan 211) judge whether normal operation of radiation fan 211; and control electronic component 31 operates with lower running power when its improper running, to slow down the speed of electronic component 31 generation heat energy.Owing to overtemperature protection system 2 is that the operating condition of directly detecting radiation fan 211 judges whether the temperature of electronic equipment 3 is overheated, so the situation that can judge by accident because of the other electron component fault in fans drive and the control module 212 not.
Moreover, the utility model more provide another with first embodiment between have different control ways second preferred embodiment.See also Fig. 3, it is connected in the block schematic diagram of electronic equipment in second preferred embodiment for the utility model overtemperature protection system.Fig. 3 demonstrates an overtemperature protection system 4 and an electronic equipment 5, and electronic equipment 5 has an electronic component 51, and its electronic component 51 operates and generation heat energy.Overtemperature protection system 4 is connected in electronic component 51, and is overheated because of the heat energy that its inside produces in order to prevent electronic equipment 5.In this preferred embodiment, electronic equipment 5 is Digital Television, and electronic component 51 then is the display floater corresponding to Digital Television.
The 3rd, control module 42 comprises a detecting and decision circuitry 421 and a control circuit 422, detecting is connected in fan control coil 4111 with decision circuitry 421, when being used to receive the S polar curve ring signal S31 that fans drive and control module 412 export, S31 carries out rectification and produces a rectified signal to S polar curve ring signal, and the one first running signal C1 or one second that exports corresponding to this rectified signal according to this rectified signal operates signal C2.Control circuit 422 is connected in the electronic component 51 of detecting and decision circuitry 421 and electronic equipment 5, in order to receiving this first running signal C1 or this second running signal C2, and control electronic component 51 with the first running power or the second running power running according to the first running signal C1 or the second running signal C2.The 4th, in this preferred embodiment, the first running power is that 100%, the second running power then is 0%.The 5th, overtemperature protection system 4 more includes in order to remind user's caution element 43.
Next the operation situation of the overtemperature protection system 4 of this preferred embodiment is described.Among Fig. 3, when fans drive and control module 412 desires driving radiation fan 411, fans drive and control module 412 output fan loop signal S3, and this fan loop signal S3 transfers to radiation fan 411 by fan control coil 4111, radiation fan 411 is rotated and gets rid of the heat energy that electronic component 51 produces.Simultaneously, radiation fan 411 outputs one rotary state signal D gives the fan running decision circuitry 4121 of fans drive and control module 412, and rotary state signal D is corresponding to the rotary state of radiation fan 411, judge the rotary state of radiation fans 411, for example rotating speed height etc. for fan running decision circuitry 4121.At this moment, fan running decision circuitry 4121 judges that rotary state signal D is high logic level signal, and output is given control module 42 corresponding to the rotation detection signal RD of this rotary state signal D, makes control module 42 judge that radiation fan 411 is normal operation according to rotating detection signal RD.
On the other hand, the S polar curve ring signal S31 in fan loop signal S3 is transferred to control module 42, and detecting and 421 pairs of S polar curves of decision circuitry ring signal S31 carry out rectification and produce this rectified signal.Next, when detecting is judged this rectified signal more than or equal to one first voltage threshold value with decision circuitry 421, detecting judges that with decision circuitry 421 this rectified signal is high logic level signal, and export the first running signal C1 corresponding to this rectified signal according to this high logic level signal, make control circuit 422 control electronic component 51 with this first running power running according to this first running signal C1.
When driving radiation fan 411 as fans drive and control module another less fan loop signal S3* of 412 outputs, radiation fan 411 reduces its rotational velocity because of some abnormal factors, and export another rotary state signal D* and give fan running decision circuitry 4121, and another rotary state signal D* is corresponding to the rotary state of radiation fan 411.At this moment, fan running decision circuitry 4121 judges that another rotary state signal D* is low logic level signal, and output is given control module 42 corresponding to the rotation detection signal RD of this rotary state signal D, makes control module 42 judge that radiation fan 411 is in abnormal state according to rotating detection signal RD.
On the other hand, another S polar curve ring signal S31* in another fan loop signal S3* is transferred to control module 42, and detecting and decision circuitry 421 are carried out rectification and produced another rectified signal another S polar curve ring signal S31*.Next, when detecting is judged this another rectified signal less than one second voltage threshold value with decision circuitry 421, detecting judges that with decision circuitry 421 this another rectified signal is low logic level signal, and export the second running signal C2 corresponding to this another rectified signal according to this low logic level signal, make control circuit 422 control electronic component 51 with this lower second running power running according to this second running signal C2.According to as can be known above-mentioned, control module 42 is according to rotating detection signal RD with consistent according to the judged result of another S polar curve ring signal S31*.
In the overtemperature protection system 4; caution element 43 is connected in detecting and the decision circuitry 421 of control module 42; when being used to receive this low logic level signal of detecting and decision circuitry 421; produce an alarm signal; and remind user's radiation fan 411 to reduce because of the overheated rotational velocity that causes, or because entering in the radiation fan 411, external foreign matter cause it to stop operating.In this preferred embodiment, alarm signal is to point out the user in sound mode.
What need special instruction has two; first; fans drive in the utility model overtemperature protection system 4 and control module 412 and control module 42 are to be arranged at respectively on the various boards; for example; heat radiation fan module 41 is independently module components, and its inside comprises a circuit board that is provided with fans drive and control module 412 at least, with the radiation fan 411 that is electrically connected on fans drive and control module 412; in addition, 42 of control modules are arranged on other the circuit board.
Second; the overtemperature protection system 4 of this preferred embodiment can utilize rotate detection signal RD and according to fan loop signal S3(or another fan loop signal S3*) control the running of electronic component 51; simultaneously, it can provide whether failure judgment mechanism of a kind of element.Illustrate, suppose under the situation of fan running decision circuitry 4121 faults, when driving radiation fan 411 as fans drive and control module 412 output fan loop signal S3, radiation fan 411 runnings and output rotary state signal D give fan running decision circuitry 4121, and wherein rotary state signal D is high logic level signal.At this moment, the rotation detection signal RD that exports corresponding to low logic level signal owing to fan running decision circuitry 4121 faults gives control module 42, makes control module 42 judge that radiation fan 411 is in abnormal state.On the other hand, control module 42 is judged radiation fan 411 normal operations according to fan loop signal S3, so control electronic component 51 is with the first running power running.
That is to say, when control module 42 according to rotating detection signal RD when consistent according to the judged result of fan loop signal S3, expression fan running decision circuitry 4121 normally and not breaks down, and when control module 42 according to rotating detection signal RD when inconsistent according to the judged result of fan loop signal S3, represent that then fan running decision circuitry 4121 is unusual, at this moment, control module 42 is as the criterion with the judged result of fan loop signal S3.
Combine speech, the overtemperature protection system 4 of this preferred embodiment more can provide whether failure judgment mechanism of fan running decision circuitry 4121, to avoid taking place misoperation.
Moreover, the utility model more provide another with first embodiment between have different control ways the 3rd preferred embodiment.See also Fig. 4, it is the block schematic diagram of electronic equipment 6 in the 3rd preferred embodiment that the utlity model has overheat protective function.Electronic equipment 6 with overheat protective function comprises an electronic component 61, a heat radiation fan module 62, a control module 63 and a caution element 64, and electronic component 61 is arranged in the electronic equipment 6, its running and produce heat energy.In this preferred embodiment, electronic equipment 6 is an illumination lamp, and electronic component 61 then is the bulb corresponding to illumination lamp 6.And in another preferred embodiment, electronic equipment is a projector, and electronic component then is one of various projection lamp source (for example, LED lamp source, halogen lamp source etc.) corresponding to projector.
Heat radiation fan module 62 comprises a radiation fan 621 and a fans drive and control module 622, and heat radiation fan module 62 is arranged in the electronic equipment 6 and close to electronic component 61, and radiation fan 621 has a fan control coil 6211.In this preferred embodiment, fan control coil 6211 comprises a N utmost point control coil and a S utmost point control coil.
Among Fig. 4, fans drive and control module 622 are connected in fan control coil 6211, give fan control coil 6211 in order to export a fan loop signal S4, rotate and drive radiation fan 621.Control module 63 is connected in heat radiation fan module 62 and electronic component 61, in order to receive the N polar curve ring signal S41 among the fan loop signal S4 that fans drive and control module 622 export, and control electronic component 61 with one first running power or one second running power running according to N polar curve ring signal S41, wherein the first running power is greater than the second running power.In this preferred embodiment, the first running power is that 100%, the second running power then is 30%, and fans drive and control module 622 and control module 63 are arranged on the same circuit board.
Among Fig. 4, when fans drive and control module 622 desires driving radiation fan 621, fans drive and control module 622 output fan loop signal S4, and this fan loop signal S4 transfers to radiation fan 621 by fan control coil 6211, radiation fan 621 is rotated and gets rid of the heat energy that electronic component 61 produces.Simultaneously, radiation fan 621 outputs one rotary state signal D gives fans drive and control module 622, and rotary state signal D is corresponding to the rotary state of radiation fan 621, for the rotary state of fans drive and control module 622 judgement radiation fans 621.At this moment, fans drive and control module 622 judge that rotary state signal D is high logic level signal, and output is given control module 63 corresponding to the rotational frequency signal FG of this rotary state signal D, makes control module 63 judge that radiation fan 621 is normal operations according to rotational frequency signal FG.
On the other hand, when the N polar curve ring signal S41 of fan loop signal S4 is transferred to control module 63, and when control module 63 is judged N polar curve ring signal S41 more than or equal to one first voltage threshold value, control module 63 judges that this N polar curve ring signal S41 is a high logic level signal, and controls electronic component 61 with this first running power running according to this high logic level signal.
And export less another fan loop signal S4* when fans drive and control module 622, as another N polar curve ring signal S41* among another fan loop signal S4* during less than one second voltage threshold value, control module 63 judges that this another N polar curve ring signal S41* are low logic level signal, and controls electronic component 61 according to this low logic level signal and change to this second running power running.In this preferred embodiment, the first voltage threshold value and the second voltage threshold value are mutually different voltage threshold value.
In the electronic equipment 6, caution element 64 is connected in control module 63, when being used to receive this low logic level signal, produce an alarm signal, and remind user's radiation fan 621 to reduce because of the overheated rotational velocity that causes, or because entering in the radiation fan 621, external foreign matter cause it to stop operating.In this preferred embodiment, alarm signal is to remind the user in sound mode.
In addition, the utility model more provide another with second embodiment between have different control ways the 4th preferred embodiment.See also Fig. 5, the utlity model has the block schematic diagram of electronic equipment in the 4th preferred embodiment of overheat protective function.Electronic equipment 7 with overheat protective function comprises an electronic component 71, a heat radiation fan module 72 and a control module 73; and heat radiation fan module 72 comprises a radiation fan 721 and a fans drive and control module 722, and radiation fan 721 has a fan control coil 7211.The structure of the electronic equipment with overheat protective function 7 of this preferred embodiment is identical haply with the electronic equipment with overheat protective function 6 of the 3rd preferred embodiment, and no longer adds explanation.
And the difference of the electronic equipment with overheat protective function 6 of the electronic equipment with overheat protective function 7 of this preferred embodiment and the 3rd preferred embodiment has three; first; fans drive and control module 722 outputs one fan loop signal S5 to radiation fan 721 driving it, and the S polar curve ring signal S51 among the fan loop signal S5 transfers to control module 73.Second, fans drive and control module 722 comprise a fan running decision circuitry 7221, be connected in this fan control coil 7211 and control module 73, judge the rotary state of radiation fan 721 in order to a rotary state signal D who exports according to radiation fan 721, and output is given control module 73 corresponding to the rotational frequency signal FG of this rotary state signal D.
The 3rd, control module 73 comprises a detecting and decision circuitry 731 and a control circuit 732, detecting is connected in fan control coil 7211 with decision circuitry 731, when being used to receive the S polar curve ring signal S51 among the fan loop signal S5, S51 carries out rectification and produces a rectified signal to S polar curve ring signal, and the one first running signal C1 or one second that exports corresponding to this rectified signal according to this rectified signal operates signal C2.Control circuit 732 is connected in detecting and decision circuitry 731 and electronic component 71, in order to receiving this first running signal C1 or this second running signal C2, and control electronic component 71 with the first running power or the second running power running according to the first running signal C1 or the second running signal C2.
Next the operation situation of the electronic equipment with overheat protective function 7 of this preferred embodiment is described.Among Fig. 5, when fans drive and control module 722 desires driving radiation fan 721, fans drive and control module 722 output fan loop signal S5, and this fan loop signal S5 transfers to radiation fan 721 by fan control coil 7211, radiation fan 721 is rotated and gets rid of the heat energy that electronic component 71 produces.Simultaneously, radiation fan 721 outputs one rotary state signal D gives the fan running decision circuitry 7221 of fans drive and control module 722, and rotary state signal D judges the rotary state of radiation fan 721 corresponding to the rotary state of radiation fan 721 for fan running decision circuitry 7221.At this moment, fan running decision circuitry 7221 judges that rotary state signal D is high logic level signal, and output is given control module 73 corresponding to the rotational frequency signal FG of this rotary state signal D, makes control module 73 judge that radiation fan 721 is normal operations according to rotational frequency signal FG.
On the other hand, the S polar curve ring signal S51 in fan loop signal S5 is transferred to control module 73, and detecting and 731 pairs of S polar curves of decision circuitry ring signal S51 carry out rectification and produce this rectified signal.Next, when detecting is judged this rectified signal more than or equal to one first voltage threshold value with decision circuitry 731, detecting judges that with decision circuitry 731 this rectified signal is high logic level signal, and export the first running signal C1 corresponding to this rectified signal according to this high logic level signal, make control circuit 732 control electronic component 71 with this first running power running according to this first running signal C1.
When driving radiation fan 721 as fans drive and control module another less fan loop signal S5* of 722 outputs, radiation fan 721 reduces its rotational velocity because of foeign element, and export another rotary state signal D* and give fan running decision circuitry 7221, and another rotary state signal D* is corresponding to the rotary state of radiation fan 721.At this moment, fan running decision circuitry 7221 judges that another rotary state signal D* is low logic level signal, and output is given control module 73 corresponding to the rotational frequency signal FG of this rotary state signal D*, makes control module 73 judge that radiation fan 721 is to be in abnormal state according to rotational frequency signal FG.
On the other hand, another S polar curve ring signal S51* in another fan loop signal S5* is transferred to control module 73, and detecting and decision circuitry 731 are carried out rectification and produced another rectified signal another S polar curve ring signal S51*.Next, when detecting is judged this another rectified signal less than one second voltage threshold value with decision circuitry 731, detecting judges that with decision circuitry 731 this another rectified signal is low logic level signal, and export the second running signal C2 corresponding to this another rectified signal according to this low logic level signal, make control circuit 732 control electronic component 71 with this lower second running power running according to this second running signal C2.According to as can be known above-mentioned, control module 73 according to rotational frequency signal FG with consistent according to the judged result of fan loop signal S5.
What need special instruction has two; first; the utlity model has fans drive and control module 722 in the electronic equipment 7 of overheat protective function and control module 73 these both is arranged at respectively on the different circuit boards; that is; heat radiation fan module 72 is independently module components; its inside comprises a circuit board that is provided with fans drive and control module 722 at least; with the radiation fan 721 that is electrically connected on fans drive and control module 722; in addition, 73 of control modules are arranged on other the circuit board.Certainly, fans drive also can be arranged on the same circuit board and change according to different demands with control module 722 and control module 73.
Second; the electronic equipment 7 that the utlity model has overheat protective function can utilize rotational frequency signal FG and according to fan loop signal S5(or another fan loop signal S5*) control the running of electronic component 71; simultaneously, it can provide whether failure judgment mechanism of a kind of element.Illustrate, suppose under the situation of fan running decision circuitry 7221 faults, when driving radiation fan 721 as fans drive and control module 722 output fan loop signal S5, radiation fan 7211 runnings and output rotary state signal D give fan running decision circuitry 7221, and wherein rotary state signal D is high logic level signal.At this moment, the rotational frequency signal FG that exports corresponding to low logic level signal owing to fan running decision circuitry 7221 faults gives control module 73, makes control module 73 judge that radiation fan 721 is to be in abnormal state.On the other hand, control module 73 judges that according to fan loop signal S5 radiation fan 721 is normal operations, so control electronic component 71 is with the first running power running.
According to above-mentioned each preferred embodiment as can be known; the utility model overtemperature protection system and the electronic equipment with overheat protective function can be judged whether normal operation of radiation fan according to the fan loop signal that drives radiation fan; and the control electronic component operates with lower running power when its improper running, to slow down the speed of electronic component generation heat energy.Owing to overtemperature protection system is that the operating condition of directly detecting radiation fan judges whether the temperature of electronic equipment is overheated, so the situation that can judge by accident because of the other electron component fault in fans drive and the control module not.Simultaneously; the utility model overtemperature protection system and the electronic equipment with overheat protective function can be directly carry out corresponding running according to the fan loop signal that exports the fan control coil to; it can not judged by accident because of the factor of other detecing element fault, to have higher reliability.
The above only is preferred embodiment of the present utility model, be not in order to limit claim scope of the present utility model, therefore all other do not break away from the equivalence of finishing under the spirit that the utility model discloses and changes or modify, and all should be contained in the scope of the present utility model.
Claims (18)
1. an overtemperature protection system is overheated in order to prevent an electronic equipment, it is characterized in that this overtemperature protection system comprises:
Heat radiation fan module, close to this electronic equipment setting or be arranged in this electronic equipment, this heat radiation fan module comprises:
Radiation fan with a fan control coil close to this electronic equipment setting or be arranged in this electronic equipment, is got rid of the heat energy that this electronic equipment running produces in order to rotation; And
Fans drive and control module are connected in this fan control coil, give this fan control coil and drive this radiation fan rotation in order to export a fan loop signal; And
Control module is connected in this heat radiation fan module and this electronic equipment, in order to receiving this fan loop signal, and controls this electronic equipment with one first running power or one second running power running according to this fan loop signal; Wherein this first running power is greater than this second running power.
2. overtemperature protection system as claimed in claim 1, it is characterized in that, this fan loop signal that this control module is exported in this fans drive and control module is during more than or equal to one first voltage threshold value, judge that this fan loop signal is a high logic level signal, and control this electronic equipment with this first running power running according to this high logic level signal; And this fan loop signal that this control module is exported in this fans drive and control module is during less than one second voltage threshold value, judge that this fan loop signal is a low logic level signal, and control this electronic equipment with this second running power running according to this low logic level signal.
3. overtemperature protection system as claimed in claim 2 is characterized in that, this first voltage threshold value is identical with this second voltage threshold value; Or this first voltage threshold value is different with this second voltage threshold value.
4. overtemperature protection system as claimed in claim 2 is characterized in that, this overtemperature protection system also comprises the caution element, and this caution element is connected in this control module, produces an alarm signal when being used to receive this low logic level signal.
5. as claim 1 a described overtemperature protection system, it is characterized in that this control module comprises:
Detecting and decision circuitry, be connected in this fan control coil, when being used to receive this fan loop signal this fan loop signal is carried out rectification and produces a rectified signal, and the one first running signal of exporting corresponding to this rectified signal according to this rectified signal or one second operates signal; And
Control circuit, be connected in this detecting and decision circuitry and this electronic equipment, in order to receiving this first running signal or this second running signal, and control this electronic equipment with this first running power or this second running power running according to this first running signal or this second running signal.
6. overtemperature protection system as claimed in claim 5, it is characterized in that, when this detecting and decision circuitry are judged this rectified signal more than or equal to one first voltage threshold value, this detecting and decision circuitry judge that this rectified signal is a high logic level signal, and export this first running signal according to this high logic level signal, make this control circuit control this electronic equipment with this first running power running according to this first running signal; And when this detecting and decision circuitry are judged this rectified signal less than one second voltage threshold value, this detecting and decision circuitry judge that this rectified signal is a low logic level signal, and export this second running signal according to this low logic level signal, make this control circuit control this electronic equipment with this second running power running according to this second running signal.
7. overtemperature protection system as claimed in claim 6 is characterized in that, this first voltage threshold value is identical with this second voltage threshold value; Or this first voltage threshold value is different with this second voltage threshold value.
8. overtemperature protection system as claimed in claim 1; it is characterized in that; this fans drive and control module comprise the fan running decision circuitry; this fan running decision circuitry is connected in this fan control coil and this control module; judge the rotary state of this radiation fan in order to a rotary state signal of exporting according to this radiation fan, and a rotation detection signal or the rotational frequency signal exported corresponding to this rotary state signal give this control module.
9. overtemperature protection system as claimed in claim 1; it is characterized in that; this electronic equipment comprises an electronic component; this electronic component is arranged in this electronic equipment; this electronic component running and produce this heat energy, and this electronic component be corresponding to illumination lamp a bulb, corresponding to a host board of host computer, corresponding to a communication chip of mobile phone, corresponding to a display floater of Digital Television, corresponding to a projection lamp source of projector, corresponding in the microprocessor of panel computer at least one.
10. the electronic equipment with overheat protective function is characterized in that, comprising:
Electronic component is arranged in this electronic equipment;
Heat radiation fan module is arranged in this electronic equipment and close to this electronic component, this heat radiation fan module comprises:
Radiation fan with a fan control coil is arranged in this electronic equipment and close to this electronic component, gets rid of the heat energy that this electronic component running produces in order to rotation; And
Fans drive and control module are connected in this fan control coil, give this fan control coil and drive this radiation fan rotation in order to export a fan loop signal; And
Control module is connected in this heat radiation fan module and this electronic equipment, in order to receiving this fan loop signal, and controls this electronic component with one first running power or one second running power running according to this fan loop signal; Wherein this first running power is greater than this second running power.
11. the electronic equipment with overheat protective function as claimed in claim 10, it is characterized in that, this fan loop signal that this control module is exported in this fans drive and control module is during more than or equal to one first voltage threshold value, judge that this fan loop signal is a high logic level signal, and control this electronic component with this first running power running according to this high logic level signal; And this fan loop signal that this control module is exported in this fans drive and control module is during less than one second voltage threshold value, judge that this fan loop signal is a low logic level signal, and control this electronic component with this second running power running according to this low logic level signal.
12. the electronic equipment with overheat protective function as claimed in claim 11 is characterized in that, this first voltage threshold value is identical with this second voltage threshold value; Or this first voltage threshold value is different with this second voltage threshold value.
13. the electronic equipment with overheat protective function as claimed in claim 11 is characterized in that this electronic equipment also comprises the caution element, this caution element is connected in this control module, produces an alarm signal when being used to receive this low logic level signal.
14. the electronic equipment with overheat protective function as claimed in claim 10 is characterized in that, this control module comprises:
Detecting and decision circuitry, be connected in this fan control coil, when being used to receive this fan loop signal this fan loop signal is carried out rectification and produces a rectified signal, and the one first running signal of exporting corresponding to this rectified signal according to this rectified signal or one second operates signal; And
Control circuit, be connected in this detecting and decision circuitry and this electronic component, in order to receiving this first running signal or this second running signal, and control this electronic component with this first running power or this second running power running according to this first running signal or this second running signal.
15. the electronic equipment with overheat protective function as claimed in claim 14, it is characterized in that, when this detecting and decision circuitry are judged this rectified signal more than or equal to one first voltage threshold value, this detecting and decision circuitry judge that this rectified signal is a high logic level signal, and export this first running signal according to this high logic level signal, make this control circuit control this electronic component with this first running power running according to this first running signal; And when this detecting and decision circuitry are judged this rectified signal less than one second voltage threshold value, this detecting and decision circuitry judge that this rectified signal is a low logic level signal, and export this second running signal according to this low logic level signal, make this control circuit control this electronic component with this second running power running according to this second running signal.
16. the electronic equipment with overheat protective function as claimed in claim 15 is characterized in that, this first voltage threshold value is identical with this second voltage threshold value; Or this first voltage threshold value is different with this second voltage threshold value.
17. the electronic equipment with overheat protective function as claimed in claim 10; it is characterized in that; this fans drive and control module comprise the fan running decision circuitry; this fan running decision circuitry is connected in this fan control coil and this control module; judge the rotary state of this radiation fan in order to a rotary state signal of exporting according to this radiation fan, and a rotation detection signal or the rotational frequency signal exported corresponding to this rotary state signal give this control module.
18. the electronic equipment with overheat protective function as claimed in claim 10; it is characterized in that; this electronic equipment is at least one in illumination lamp, host computer, mobile phone, Digital Television, projector and the panel computer, and this electronic component be corresponding to this illumination lamp a bulb, corresponding to a host board of this host computer, corresponding to a communication chip of this mobile phone, corresponding to a display floater of this Digital Television, corresponding to a projection lamp source of this projector, corresponding in the microprocessor of this panel computer at least one.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102204356U TWM467104U (en) | 2013-03-08 | 2013-03-08 | Overheat protecting device and electrical device with overheat protecting function |
| TW102204356 | 2013-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189301U true CN203189301U (en) | 2013-09-11 |
Family
ID=49106163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320138401 Expired - Fee Related CN203189301U (en) | 2013-03-08 | 2013-03-25 | Overheat protection device and electronic device with overheat protection function |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203189301U (en) |
| TW (1) | TWM467104U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI676858B (en) * | 2018-10-23 | 2019-11-11 | 台達電子工業股份有限公司 | Projector and projector protection method |
| CN111005892A (en) * | 2019-12-18 | 2020-04-14 | 迈普通信技术股份有限公司 | Adaptive fan circuit, system, electronic equipment and fan detection method |
| US11422445B2 (en) | 2018-10-23 | 2022-08-23 | Delta Electronics, Inc. | Projector with temperature sensor and projector protection method |
-
2013
- 2013-03-08 TW TW102204356U patent/TWM467104U/en not_active IP Right Cessation
- 2013-03-25 CN CN 201320138401 patent/CN203189301U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI676858B (en) * | 2018-10-23 | 2019-11-11 | 台達電子工業股份有限公司 | Projector and projector protection method |
| US11422445B2 (en) | 2018-10-23 | 2022-08-23 | Delta Electronics, Inc. | Projector with temperature sensor and projector protection method |
| CN111005892A (en) * | 2019-12-18 | 2020-04-14 | 迈普通信技术股份有限公司 | Adaptive fan circuit, system, electronic equipment and fan detection method |
| CN111005892B (en) * | 2019-12-18 | 2021-06-18 | 迈普通信技术股份有限公司 | Adaptive fan circuit, system, electronic equipment and fan detection method |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM467104U (en) | 2013-12-01 |
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