The cleaning device of projector and dust filter thereof reaches its method that cleans
Technical field
The present invention relates to projector's technical field, the cleaning device that relates in particular to a kind of projector and dust filter thereof reaches its method that cleans.
Background technology
Be provided with dust filter near the fan in the projector, to filter dust and pollutant.If this dust filter is stopped up by dust, can influence the ventilation of projector inside, and cause that projector is overheated and damage machine.So need in time dust filter to be cleaned.Cleaning process to dust filter in the prior art generally is manually dust filter to be taken out, and after use suction cleaner or other devices clean, reinstalls in the projector, and process is loaded down with trivial details.
Summary of the invention
Technical matters to be solved by this invention provides the cleaning device and the clean method of a kind of projector and dust filter thereof, and this cleaning device and method can clean dust filter automatically, and have greatly simplified cleaning course.
For solving the problems of the technologies described above, according to an aspect of the present invention, provide the cleaning device of a kind of projector dust filter, this device comprises: magnetic part is fixed on the dust filter; Electromagnet is oppositely arranged with magnetic part; And electric-control system, be connected with electromagnet, be used to control current of electromagnet, wherein, magnetic part moves along with the difference of the direction of current in the electromagnet, and dust filter is swung with moving of magnetic part.
Further, magnetic part comprises: first permanent magnet, be bar shaped, and be horizontally fixed on the top of dust filter; Second permanent magnet is bar shaped, is horizontally fixed on the bottom of dust filter, and its polarity is towards identical with first permanent magnet; Electromagnet comprises: first electromagnet, be bar shaped, be arranged on first the outside of dust filter vertically, its two ends respectively with the end alignment of the identical polar of first permanent magnet and second permanent magnet.
Further, first permanent magnet and second permanent magnet are fixed on first of dust filter; Magnetic part also comprises: the 3rd permanent magnet, be bar shaped, and be horizontally fixed on second the top opposite of dust filter with first; The 4th permanent magnet is bar shaped, is horizontally fixed on second bottom of dust filter, and its polarity is towards identical with the 3rd permanent magnet; Electromagnet also comprises: second electromagnet, be bar shaped, be arranged on second the outside of dust filter vertically, its two ends respectively with the end alignment of the identical polar of first permanent magnet and second permanent magnet.
Further, first electromagnet and second electromagnet series connection, and around to identical, the polarity of the 3rd permanent magnet and first permanent magnet is towards opposite.
Further, the cleaning device of this projector's dust filter also comprises elastic device, and the two ends of elastic device connect the corresponding end of corresponding magnetic part and electromagnet respectively.
Further, the cleaning device of this projector's dust filter also comprises fan, and this fan and dust filter first or second face are oppositely arranged.
According to another aspect of the present invention, provide a kind of projector, it comprises the cleaning device of above-mentioned any projector dust filter.
According to a further aspect of the invention, a kind of method of using any above-mentioned cleaning device that the dust filter of projector is cleaned is provided, this method comprises: earlier to electromagnet input forward current, again to electromagnet input inverse current, wherein, be fixed with magnetic part on the dust filter, electromagnet and magnetic part are oppositely arranged.
Further, before for the first time to electromagnet input forward current, and after at every turn to electromagnet input inverse current, this method also comprises: the clean-up performance of judging dust filter; Be lower than default clean-up performance if judge the clean-up performance of dust filter, then carry out earlier electromagnet is imported forward current, again electromagnet is imported the step of inverse current.
Further, if in the step of the clean-up performance of judging dust filter, the clean-up performance of judging dust filter is higher than default clean-up performance, whether has carried out elder generation before then judging to electromagnet input forward current, electromagnet is imported the step of inverse current again; If carried out elder generation before to electromagnet input forward current, to the step of electromagnet input inverse current, the fan of then controlling in the projector rotates in the preset time section, stops afterwards again.
The present invention has following beneficial effect:
1. in the cleaning device of projector of the present invention dust filter, the electric current in the electric control system controls electromagnet, and the variation of the electric current in the electromagnet can cause the ferromagnetic variation of electromagnetism, and then cause moving of the magnetic part that is oppositely arranged with electromagnet.Be fixed on the dust filter owing to this magnetic part again, thereby, can drive dust filter and carry out the correspondence swing if magnetic part moves.Like this, dust filter is shaken off at the dust of swinging on can be with it in claiming, the dust of shaking off can be produced by boasting with fan afterwards.This device has been arranged, when being carried out cleaning, dust filter need not it is taken out and the link of placing again, simplified the cleaning of dust filter greatly, concrete control method according to electric-control system, can clean dust filter as required at any time, guarantee the operate as normal of projector.
2. in the method that the above-mentioned cleaning device of use of the present invention cleans projector's dust filter, earlier to electromagnet input forward current, again to electromagnet input inverse current, dust filter is swung in the other direction to a direction swing earlier along with moving of magnetic part again, produced the effect that makes the dust filter shake, thereby the dust on it has been shaken off.In addition, after electromagnet input forward current and inverse current, if the clean-up performance of dust filter has been higher than default clean-up performance, then can be with the starting fan in the projector, so that the dust of shaking off is produced by boasting.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.With reference to figure, the present invention is further detailed explanation below.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 be projector's dust filter according to an embodiment of the invention cleaning device electromagnet not the structural representation when electric;
Fig. 2 is the structural representation of the electric current of cleaning device in electromagnet of projector's dust filter according to an embodiment of the invention when being forward;
Fig. 3 is the structural representation of the electric current of cleaning device in electromagnet of projector's dust filter according to an embodiment of the invention when being reverse;
Fig. 4 is according to an embodiment of the invention to the schematic flow sheet of the clean method of the dust filter of projector.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
The cleaning device of projector's dust filter comprises magnetic part, electromagnet and electric-control system according to an embodiment of the invention.As shown in Figure 1, magnetic part is fixed on the dust filter F; Electromagnet and magnetic part are oppositely arranged; Electric-control system is connected with electromagnet, is used to control current of electromagnet.Because the electric current in the electric control system controls electromagnet, and the variation of the electric current in the electromagnet can cause the ferromagnetic variation of electromagnetism, and then cause moving of the magnetic part that is oppositely arranged with electromagnet, and this magnetic part is fixed on the dust filter F, if thereby magnetic part moves, can drive dust filter and carry out the correspondence swing.Like this, the control by electric-control system can make dust filter F swing.Dust filter F shakes off at the dust of swinging on can be with it in claiming.This device has been arranged, when being carried out cleaning, dust filter F need not it is taken out and is placed into the link of projector, simplified the cleaning of dust filter greatly, concrete control method according to electric-control system, can clean dust filter as required at any time, guarantee the operate as normal of projector.
Preferably, as can see from Figure 1, this cleaning device can also comprise fan 3, and this fan and dust filter F first or second face are oppositely arranged, and start this fan 3 after swing dust filter F, the dust of shaking off can be produced by boasting with fan 3.
Preferably, as shown in Figure 1, in the present embodiment, magnetic part comprises first permanent magnet 101 and second permanent magnet 102, and these two permanent magnets are bar shaped.First permanent magnet 101 is horizontally fixed on the top of dust filter F; Second permanent magnet 102 is horizontally fixed on the bottom of dust filter F, and its polarity is towards identical with first permanent magnet.In addition, electromagnet comprises first electromagnet 201, be bar shaped, be arranged on first the outside of dust filter F vertically, its two ends respectively with the end alignment of the identical polar of first permanent magnet 101 and second permanent magnet 102, in the present embodiment, the two ends of first electromagnet 201 respectively with the end alignment of the N utmost point of first permanent magnet 101 and second permanent magnet 102.
As shown in Figure 2, when the direction of the electric current I in first electromagnet 201 is forward, the upper end of first electromagnet 201 is the S utmost point, the lower end is the N utmost point, thereby first permanent magnet 101 is attracted near first electromagnet 201, second permanent magnet 102 is repelled by P and away from first electromagnet 201, and then drives dust filter F upper end lower end swing to the right left.Otherwise, as shown in Figure 3, when the direction of the electric current I in first electromagnet 201 when being reverse, the upper end of first electromagnet 201 is the N utmost point, the lower end is the S utmost point, thereby first permanent magnet 101 is ostracised away from first electromagnet, 201, the second permanent magnets 102 are attracted near first electromagnet 201, and then drive dust filter F upper end to bottom righthand side swing left.Be appreciated that the direction of current that changes repeatedly in first electromagnet 201, can make dust filter F repeatedly in the opposite direction the swing and the dust on it is shaked off.
Preferably, as Figure 1-3, in the present embodiment, first permanent magnet 101 and second permanent magnet 102 are fixed on first of dust filter F; Magnetic part also comprises the 3rd permanent magnet 103 of bar shaped and the 4th permanent magnet 104 of bar shaped.The 3rd permanent magnet 103 is horizontally fixed on second the top opposite with first of dust filter F; The 4th permanent magnet 104 is horizontally fixed on second the bottom of dust filter F, and its polarity is towards identical with the 3rd permanent magnet 103.In the present embodiment, electromagnet also comprises second electromagnet 202 of bar shaped, it is arranged on second the outside of dust filter F vertically, its two ends respectively with the end alignment of the identical polar of first permanent magnet 101 and second permanent magnet 102, in the present embodiment, the two ends of second electromagnet 202 respectively with the end alignment of the S utmost point of the 3rd permanent magnet 103 and the 4th permanent magnet 104.Be appreciated that, in the present embodiment, direction of current in changing first electromagnet 201 and second electromagnet 202 repeatedly simultaneously, and make first electromagnet 201 identical at synchronization to the direction of the power that corresponding permanent magnet produced with second electromagnet 202, can make dust filter F repeatedly in the opposite direction the swing and the dust on it is shaked off.
Preferably, as Figure 1-3, in the present embodiment, first electromagnet 201 and 202 series connection of second electromagnet, and around to identical, and the polarity of the 3rd permanent magnet 103 and first permanent magnet 101 is towards opposite, thereby the polarity of second permanent magnet 102 and the 4th permanent magnet 104 is towards also opposite.Like this, as shown in Figure 2, when the direction of the electric current I in first electromagnet 201 was forward, the upper end of first electromagnet 201 was the S utmost point, and the lower end is the N utmost point, thereby attract first permanent magnet 101 and repel second permanent magnet 102, similarly, the upper end of second electromagnet 202 is the S utmost point, and the lower end is the N utmost point, thereby repel the 3rd permanent magnet 103 and attract the 4th permanent magnet 104, thereby drive dust filter F upper end lower end swing to the right left.Otherwise as shown in Figure 3, when the direction of the electric current I in first electromagnet 201 when being reverse, because similar principle, electromagnet drives the permanent magnet motion and then drives dust filter F upper end to bottom righthand side swing left.
Preferably, it can also be seen that also comprise elastic device according to the cleaning device of projector of the present invention dust filter, the two ends of elastic device connect the corresponding end of corresponding magnetic part and electromagnet respectively from Fig. 1 to Fig. 3.
According to another aspect of the present invention, provide a kind of projector, it comprises the cleaning device of above-mentioned any projector dust filter.
As shown in Figure 4, the present invention also provides a kind of and has used above-mentioned cleaning device to the method that the dust filter of projector cleans, and comprising: step S102: earlier to electromagnet input forward current, again to electromagnet input inverse current.Wherein, as indicated above, on dust filter, be fixed with magnetic part, electromagnet and magnetic part are oppositely arranged, the variation of the electric current in the electromagnet can cause the ferromagnetic variation of electromagnetism, and then cause moving of the magnetic part that is oppositely arranged with electromagnet, and so that driving dust filter, swings magnetic part, shake off the dust on it.
Preferably, before for the first time to electromagnet input forward current, and after at every turn to electromagnet input inverse current, this method also comprises: step S101: the clean-up performance of judging dust filter; Be lower than default clean-up performance if judge the clean-up performance of dust filter, then carry out first step S102.This step S101 can be undertaken by the sensing of distinguished and admirable pressure transducer.In according to other embodiments of the invention, this step S101 can also replace with manual triggers cleaning button, perhaps projector's start.Just, can behind operator's manual triggers cleaning button or in each projector, start shooting the back execution, again electromagnet be imported the step of inverse current earlier to electromagnet input forward current.
Preferably, if among the step S101, the clean-up performance of judging dust filter is higher than default clean-up performance, then execution in step S103: whether carried out step S102 before judging; If carried out step S102, then execution in step S104 before: the fan 3 in the control projector rotates in the preset time section, stops afterwards.This is owing to carry out elder generation to electromagnet input forward current, to the step of electromagnet input inverse current, dust is shaken off, thereby the rotation meeting of fan 3 blows out the dust of shaking off again.
Behind execution of step S104, execution in step S102 not before perhaps judging during execution in step S103 then preferably can also execution in step S105: normally open projector.
This method need not it is taken out and the link that is placed into projector again, has simplified the cleaning of dust filter greatly and can clean dust filter as required at any time, has guaranteed the operate as normal of projector.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.