CN102243422B - Cleaning device and method for projector and dust filter thereof - Google Patents
Cleaning device and method for projector and dust filter thereof Download PDFInfo
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- CN102243422B CN102243422B CN 201110184179 CN201110184179A CN102243422B CN 102243422 B CN102243422 B CN 102243422B CN 201110184179 CN201110184179 CN 201110184179 CN 201110184179 A CN201110184179 A CN 201110184179A CN 102243422 B CN102243422 B CN 102243422B
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- electromagnet
- permanent magnet
- projector
- cleaning device
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Abstract
The invention discloses a cleaning device and method for a projector and a dust filter thereof. The cleaning device comprises a magnetic member fixed on the dust filter, an electromagnet arranged opposite to the magnetic member and an electric control system connected with the electromagnet and used for controlling the current of the electromagnet, wherein the magnetic member moves along with the changes of the current direction of the electromagnet, and the dust filter swings along with the movement of the magnetic member. By means of the cleaning device, the processes of taking out and placing down the cleaning device are omitted when the dust filter is used for cleaning work, so that the cleaning work of the dust filter is greatly simplified; and according to the specific control method of the electric control system, the dust filter can be cleaned at any time as required, so that the normal work of the projector is ensured.
Description
Technical field
The present invention relates to projector's technical field, relate in particular to the cleaning device of a kind of projector and dust filter thereof and it is carried out Clean method.
Background technology
Be provided with dust filter near fan in projector, to filter dust and pollutant.If this dust filter is stopped up by dust, can affect 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 prior art is generally manually dust filter to be taken out, and after using suction cleaner or other devices to clean, reinstalls in projector, and process is loaded down with trivial details.
Summary of the invention
Technical matters to be solved by this invention is to provide 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 dust filter; Electromagnet is oppositely arranged with magnetic part; And electric-control system, be connected with electromagnet, be used for controlling the electric current of electromagnet, wherein, magnetic part moves along with the difference of the direction of current in electromagnet, and dust filter swings with the movement of magnetic part.
Further, magnetic part comprises: the first permanent magnet, be bar shaped, and be horizontally fixed on the top of dust filter; The second permanent magnet is bar shaped, is horizontally fixed on the bottom of dust filter, and its polarity is towards identical with the first permanent magnet; Electromagnet comprises: the first electromagnet, be bar shaped, be arranged on vertically the outside of the first surface of dust filter, its two ends respectively with the end alignment of the identical polar of the first permanent magnet and the second permanent magnet.
Further, the first permanent magnet and the second permanent magnet are fixed on the first surface of dust filter; Magnetic part also comprises: the 3rd permanent magnet, be bar shaped, and be horizontally fixed on the top of second opposite with first surface of dust filter; The 4th permanent magnet is bar shaped, is horizontally fixed on the bottom of second of dust filter, and its polarity is towards identical with the 3rd permanent magnet; Electromagnet also comprises: the second electromagnet, be bar shaped, be arranged on vertically the outside of second of dust filter, its two ends respectively with the end alignment of the identical polar of the first permanent magnet and the second permanent magnet.
Further, the series connection of the first electromagnet and the second electromagnet, and around to identical, the polarity of the 3rd permanent magnet and the first permanent magnet is towards the opposite.
Further, the cleaning device of this projector's dust filter also comprises elastic device, and the two ends of elastic device connect respectively the corresponding end of corresponding magnetic part and electromagnet.
Further, the cleaning device of this projector's dust filter also comprises fan, and the first surface of this fan and dust filter or the 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, providing a kind of uses any above-mentioned cleaning device to carry out Clean method to the dust filter of projector, the method comprises: first to electromagnet input forward current, again to electromagnet input inverse current, wherein, be fixed with magnetic part on 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, the method also comprises: the clean-up performance of judgement dust filter; If judge the clean-up performance of dust filter lower than default clean-up performance, carry out first electromagnet is inputted forward current, then electromagnet is inputted the step of inverse current.
Further, if in the step of the clean-up performance that judges dust filter, judge the clean-up performance of dust filter higher than default clean-up performance, whether carried out before the judgement first electromagnet is inputted forward current, then electromagnet is inputted the step of inverse current; If carried out first electromagnet input forward current before, then to the step of electromagnet input inverse current, the fan in the controlling projection machine rotates in the predetermined time section, stops afterwards.
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 electromagnet can cause the ferromagnetic variation of electromagnetism, and then cause the movement of the magnetic part that is oppositely arranged with electromagnet.Again because this magnetic part is fixed on dust filter, thereby if magnetic part is mobile, can drives dust filter and carry out correspondence swing.Like this, dust filter is shaken off at the dust that swung 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, greatly simplified the cleaning of dust filter, concrete control method according to electric-control system, can clean dust filter as required at any time, guarantee the normal operation of projector.
2. in the above-mentioned cleaning device of use of the present invention carries out Clean method to projector's dust filter, first to electromagnet input forward current, again to electromagnet input inverse current, dust filter is first swung to a direction along with the movement of magnetic part to swing in the other direction 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 higher than default clean-up performance, can be with the starting fan in 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.The below is with reference to figure, and the present invention is further detailed explanation.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction 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 dust filter F; Electromagnet and magnetic part are oppositely arranged; Electric-control system is connected with electromagnet, is used for controlling the electric current of electromagnet.Due to the electric current in the electric control system controls electromagnet, and the variation of the electric current in electromagnet can cause the ferromagnetic variation of electromagnetism, and then cause the movement of the magnetic part that is oppositely arranged with electromagnet, and this magnetic part is fixed on dust filter F, if thereby magnetic part is mobile, can drives 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 that swung 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, greatly simplified the cleaning of dust filter, concrete control method according to electric-control system, can clean dust filter as required at any time, guarantee the normal operation of projector.
Preferably, as can see from Figure 1, this cleaning device can also comprise fan 3, and first surface or the second face of this fan and dust filter F are oppositely arranged, and starts this fan 3 after swinging 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 the first permanent magnet 101 and the second permanent magnet 102, and these two permanent magnets are bar shaped.The first permanent magnet 101 is horizontally fixed on the top of dust filter F; The second permanent magnet 102 is horizontally fixed on the bottom of dust filter F, and its polarity is towards identical with the first permanent magnet.In addition, electromagnet comprises the first electromagnet 201, be bar shaped, be arranged on vertically the outside of the first surface of dust filter F, its two ends respectively with the end alignment of the identical polar of the first permanent magnet 101 and the second permanent magnet 102, in the present embodiment, the two ends of the first electromagnet 201 respectively with the end alignment of the N utmost point of the first permanent magnet 101 and the second permanent magnet 102.
As shown in Figure 2, when the direction of the electric current I in the first electromagnet 201 is forward, the upper end of the first electromagnet 201 is the S utmost point, the lower end is the N utmost point, thereby the first permanent magnet 101 is attracted near the first electromagnet 201, the second permanent magnet 102 is repelled by P and away from the first electromagnet 201, and then drives the lower end swing to the right left of dust filter F upper end.Otherwise, as shown in Figure 3, when the direction of the electric current I in the first electromagnet 201 when being reverse, the upper end of the first electromagnet 201 is the N utmost point, the lower end is the S utmost point, thereby the first permanent magnet 101 is ostracised away from the first electromagnet 201, the second permanent magnets 102 are attracted near the 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 repeatedly changes in the first electromagnet 201, dust filter F swung repeatedly in the opposite direction and the dust on it is shaked off.
Preferably, as Figure 1-3, in the present embodiment, the first permanent magnet 101 and the second permanent magnet 102 are fixed on the first surface 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 the top of second opposite with first surface of dust filter F; The 4th permanent magnet 104 is horizontally fixed on the bottom of second of dust filter F, and its polarity is towards identical with the 3rd permanent magnet 103.In the present embodiment, electromagnet also comprises the second electromagnet 202 of bar shaped, it is arranged on the outside of second of dust filter F vertically, its two ends respectively with the end alignment of the identical polar of the first permanent magnet 101 and the second permanent magnet 102, in the present embodiment, the two ends of the 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 repeatedly changing simultaneously the first electromagnet 201 and the second electromagnet 202, and make the direction of the power that the first electromagnet 201 and the second electromagnet 202 produce corresponding permanent magnet at synchronization identical, can make dust filter F swing in the opposite direction repeatedly and the dust on it is shaked off.
Preferably, as Figure 1-3, in the present embodiment, the first electromagnet 201 and the second electromagnet 202 series connection, and around to identical, and the polarity of the 3rd permanent magnet 103 and the first permanent magnet 101 is towards the opposite, thereby the polarity of the 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 the first electromagnet 201 was forward, the upper end of the first electromagnet 201 was the S utmost point, and the lower end is the N utmost point, thereby attract the first permanent magnet 101 and repel the second permanent magnet 102, similarly, the upper end of the 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 driving the lower end swing to the right left of dust filter F upper end.Otherwise as shown in Figure 3, when the direction of the electric current I in the first electromagnet 201 when being reverse, due to 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 from Fig. 1 to Fig. 3, also comprise elastic device according to the cleaning device of projector of the present invention dust filter, the two ends of elastic device connect respectively the corresponding end of corresponding magnetic part and electromagnet.
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 carry out Clean method to the dust filter of projector, comprising: step S102: first to electromagnet input forward current, then to electromagnet input inverse current.Wherein, as indicated above, be fixed with magnetic part on dust filter, electromagnet and magnetic part are oppositely arranged, the variation of the electric current in electromagnet can cause the ferromagnetic variation of electromagnetism, and then cause the movement of the magnetic part that is oppositely arranged with electromagnet, and so that driving dust filter, magnetic part swings, 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, the method also comprises: step S101: the clean-up performance of judgement dust filter; If judge the clean-up performance of dust filter lower than default clean-up performance, carry out first step S102.This step S101 can be undertaken by the sensing of distinguished and admirable pressure transducer.according to other embodiments of the invention, this step S101 can also replace with manual triggers cleaning button, perhaps projector's start.Namely, can carry out first after operator's manual triggers cleans button or after projector starts shooting at every turn electromagnet is inputted forward current, then electromagnet be inputted the step of inverse current.
Preferably, if in step S101, the clean-up performance of judging dust filter is higher than default clean-up performance, execution in step S103: whether carried out step S102 before judgement; If carried out step S102 before, execution in step S104: the fan 3 in the controlling projection machine rotates in the predetermined time section, stops afterwards.This is owing to carrying out first, electromagnet to be inputted forward current, then electromagnet is inputted the step of inverse current, dust is shaken off, thereby the rotation meeting of fan 3 blows out the dust of shaking off.
After execution of step S104, execution in step S102 not before perhaps judging during execution in step S103 preferably can also execution in step S105: normally open projector.
The method need not it is taken out and is placed into the link of projector again, has greatly simplified the cleaning of dust filter and can clean dust filter as required at any time, has guaranteed the normal operation of projector.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. the cleaning device of projector's dust filter, is characterized in that, comprising:
Magnetic part is fixed on described dust filter;
Electromagnet is oppositely arranged with described magnetic part;
Elastic device, the two ends of described elastic device connect respectively the corresponding end of corresponding described magnetic part and described electromagnet; And
Electric-control system is connected with described electromagnet, is used for controlling the electric current of described electromagnet, wherein,
Described magnetic part moves along with the difference of the direction of current in described electromagnet, and described dust filter swings with the movement of described magnetic part.
2. the cleaning device of projector according to claim 1 dust filter, is characterized in that,
Described magnetic part comprises:
The first permanent magnet is bar shaped, is horizontally fixed on the top of described dust filter;
The second permanent magnet is bar shaped, is horizontally fixed on the bottom of described dust filter, and its polarity is towards identical with described the first permanent magnet;
Described electromagnet comprises:
The first electromagnet is bar shaped, is arranged on vertically the outside of the first surface of described dust filter, its two ends respectively with the end alignment of the identical polar of described the first permanent magnet and described the second permanent magnet.
3. the cleaning device of projector according to claim 2 dust filter, is characterized in that,
Described the first permanent magnet and described the second permanent magnet are fixed on the described first surface of described dust filter;
Described magnetic part also comprises:
The 3rd permanent magnet is bar shaped, is horizontally fixed on the top of second opposite with described first surface of described dust filter;
The 4th permanent magnet is bar shaped, is horizontally fixed on the bottom of described second of described dust filter, and its polarity is towards identical with described the 3rd permanent magnet;
Described electromagnet also comprises:
The second electromagnet is bar shaped, is arranged on vertically the outside of described second of described dust filter, its two ends respectively with the end alignment of the identical polar of described the first permanent magnet and described the second permanent magnet.
4. the cleaning device of projector according to claim 3 dust filter, is characterized in that, described the first electromagnet and described the second electromagnet series connection, and around to identical, the polarity of described the 3rd permanent magnet and described the first permanent magnet is towards the opposite.
5. the cleaning device of projector according to claim 1 dust filter, is characterized in that, also comprise fan, the first surface of described fan and described dust filter or the second face are oppositely arranged.
6. a projector, is characterized in that, comprises the cleaning device of claim 1-5 any one described projector dust filter.
7. a right to use requires the described cleaning device of any one in 1-5 to carry out Clean method to projector's dust filter, it is characterized in that, comprising: first to electromagnet input forward current, then to electromagnet input inverse current.
8. method according to claim 7, is characterized in that, before for the first time to electromagnet input forward current, and after at every turn to electromagnet input inverse current, also comprises:
The clean-up performance of judgement dust filter;
If judge the clean-up performance of described dust filter lower than default clean-up performance, carry out described first to electromagnet input forward current, then to the step of electromagnet input inverse current.
9. method according to claim 8, is characterized in that,
If in the step of the clean-up performance of described judgement dust filter, judge the clean-up performance of described dust filter higher than described default clean-up performance, whether carried out before the judgement described first to electromagnet input forward current, then to the step of electromagnet input inverse current;
If carried out describedly first to electromagnet input forward current before, then to the step of electromagnet input inverse current, the fan of controlling in described projector rotates in the predetermined time section, stops afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110184179 CN102243422B (en) | 2011-07-01 | 2011-07-01 | Cleaning device and method for projector and dust filter thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110184179 CN102243422B (en) | 2011-07-01 | 2011-07-01 | Cleaning device and method for projector and dust filter thereof |
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| CN102243422A CN102243422A (en) | 2011-11-16 |
| CN102243422B true CN102243422B (en) | 2013-06-26 |
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| CN 201110184179 Expired - Fee Related CN102243422B (en) | 2011-07-01 | 2011-07-01 | Cleaning device and method for projector and dust filter thereof |
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| CN103197495B (en) * | 2012-01-04 | 2015-06-10 | 中强光电股份有限公司 | Gas filtration module and projecting device |
| CN106694473A (en) * | 2016-12-28 | 2017-05-24 | 中南大学 | Vibration knocking device and mining dump vehicle |
| CN110848645B (en) * | 2019-11-15 | 2020-09-22 | 江苏光辉照明电气有限公司 | Automatic heat dissipation type factory uses high-power light |
| CN117695079A (en) * | 2024-01-11 | 2024-03-15 | 海南省凯元医疗科技有限公司 | VR eye therapeutic instrument with self-cleaning function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2872910B1 (en) * | 2004-07-07 | 2006-10-13 | Nanoraptor Sa | OPTICAL COMPONENT FOR OBSERVING A NANOMETRIC SAMPLE, SYSTEM COMPRISING SUCH A COMPONENT, ANALYSIS METHOD USING THE SAME, AND APPLICATIONS THEREOF |
| CN2894210Y (en) * | 2006-04-27 | 2007-04-25 | 保锐科技股份有限公司 | Filtering net magnetic adhesion device |
| US7458687B2 (en) * | 2006-05-26 | 2008-12-02 | Eastman Kodak Company | High efficiency digital cinema projection system with increased etendue |
| CN201054067Y (en) * | 2007-05-15 | 2008-04-30 | 四川长虹电器股份有限公司 | Projector dust-proof device |
| CN101576702B (en) * | 2008-05-08 | 2011-06-15 | 三洋科技中心(深圳)有限公司 | Dust preventing assembly and projecting apparatus adopting same |
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Effective date of registration: 20170608 Address after: No. 76 village, ox lake, Guanlan street, Guanlan District, Longhua, Guangdong, Shenzhen Patentee after: Shenzhen Asia Eagle Technology Co., Ltd. Address before: 215011 Zhujianglu Road high tech Zone, Jiangsu, No. 169, Co-patentee before: Qisda Corporation Patentee before: Suzhou Jiashida Optronics Co., Ltd. |
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Granted publication date: 20130626 Termination date: 20170701 |