CN104074781A - Fan control system and electronic device - Google Patents
Fan control system and electronic device Download PDFInfo
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- CN104074781A CN104074781A CN201410293213.8A CN201410293213A CN104074781A CN 104074781 A CN104074781 A CN 104074781A CN 201410293213 A CN201410293213 A CN 201410293213A CN 104074781 A CN104074781 A CN 104074781A
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Abstract
The invention provides a fan control system, comprising a fan module which is capable of blowing in two directions and arranged at an air duct opening of an electronic device, for blowing along a preset wind direction; a pressure sensor arranged close to the fan module, for sensing pressure in the preset wind direction or pressure in the opposite direction of the preset wind direction; wherein when the fan module is closed, the pressure sensor has a first sensed value, and when the fan module is opened, the pressure sensor has a second sensed value; a control unit electrically connected to the fan module, for controlling the wind direction of the fan module; a processing unit electrically connected to the pressure sensor and the control unit, for receiving the sensed values of the pressure sensor and sending out a wind direction control command to the control unit, wherein when the second sensed valve and the first sensed value have first corresponding relation, the processing unit allows the control unit to control the fan module to change the blowing direction. According to the fan control system provided by the invention, the problem about normal assembling direction or reverse assembling direction of the fan in the electronic device are not needed to be considered, so that assembling efficiency is improved.
Description
Technical field
The present invention relates to a kind of fan control system and electronic equipment, relate in particular to a kind of fan control system and electronic equipment that can automatically change air-out direction.
Background technique
While assembling fan on projector's production line at present, because the profile of fan is symmetrical, the air-out direction of more difficult judgement fan during assembling, can only lean on the direction indication of label to carry out identification conventionally, therefore easily organizes wrong problem; And once discovery group is wrong, also need again disassemble and assemble, not only time-consuming but also consume power.
Summary of the invention
Therefore, one of object of the present invention is to provide a kind of fan control system and electronic equipment, to solve prior art fan direction, easily organizes wrong technical problem.
The invention provides a kind of fan control system, be applied to electronic equipment, this fan control system comprises: fan module that can Bidirectional outlet air, be arranged at the wind passage mouth of this electronic equipment, and this fan module is in order to along predetermined wind direction air-out; Pressure sensor, contiguous this fan module arranges, in order to this predetermined wind direction of sensing maybe the contrary wind of this predetermined wind direction upward pressure, and when this fan module is closed, this pressure sensor has the first sensing value, and when this fan module is opened, this pressure sensor has the second sensing value; Control unit, is electrically connected this fan module, and controls the wind direction of this fan module; And processing unit, be electrically connected with this pressure sensor and this control unit, to receive the sensing value of this pressure sensor and to send wind direction control command to this control unit; Wherein, when this second sensing value and this first sensing value have the first corresponding relation, this processing unit makes this control unit control this fan module to change air-out direction.
As further alternative technological scheme, when this second sensing value and this first sensing value have the first corresponding relation, this processing unit judges that this fan module, for the contrary wind direction air-out along this predetermined wind direction, makes this control unit control this fan module and changes this predetermined wind direction air-out into.
As further alternative technological scheme, when this second sensing value and this first sensing value have the second corresponding relation, this processing unit judges that this fan module, for along this predetermined wind direction air-out, makes this control unit control this fan module and keeps this predetermined wind direction air-out.
As further alternative technological scheme, when this pressure sensor upwards pressure in order to this predetermined wind of sensing, this first corresponding relation is less than this first sensing value for this second sensing value, and this second corresponding relation is greater than this first sensing value for this second sensing value.
As further alternative technological scheme, when this pressure sensor upwards pressure in order to the contrary wind of this predetermined wind direction of sensing, this first corresponding relation is greater than this first sensing value for this second sensing value, and this second corresponding relation is less than this first sensing value for this second sensing value.
As further alternative technological scheme, when this pressure sensor is arranged on this predetermined wind direction of this fan module, if this second sensing value is less than this first sensing value, this processing unit judges that this fan module is for the contrary wind direction air-out along this predetermined wind direction, making this control unit control this fan module transformation air-out direction is with this predetermined wind direction air-out, if this second sensing value is greater than this first sensing value, this processing unit judges that this fan module, for along this predetermined wind direction air-out, makes this control unit control this fan module and keeps this predetermined wind direction air-out.
As further alternative technological scheme, when this pressure sensor is arranged on the contrary wind direction of this predetermined wind direction, if this second sensing value is greater than this first sensing value, this processing unit judges that this fan module is for the contrary wind direction air-out along this predetermined wind direction, making this control unit control this fan module transformation air-out direction is with this predetermined wind direction air-out, if this second sensing value is less than this first sensing value, this processing unit is sentenced this fan module for along this predetermined wind direction air-out, makes this control unit control this fan module and keeps this predetermined wind direction air-out.
As further alternative technological scheme, this fan control system also has temperature-sensitive sticker, in order to the temperature of this electronic equipment of sensing and produce sensing temperature; When this sensing temperature is greater than preset temperature, this processing unit makes this control unit improve the wind speed of this fan module.
As further alternative technological scheme, this fan control system also comprises wind-force homogenization structure, is arranged in this air channel entrance the wind-force homogenization of this wind-force homogenization structure in order to this fan module is produced.
The present invention also provides a kind of electronic equipment, and this electronic equipment has any one fan control system as above.
Compared with prior art, fan control system of the present invention makes electronic equipment no longer need to consider the Direct And Inverse Problems of fan assembling, has improved the efficiency of assembling.
Accompanying drawing explanation
Fig. 1 is fan control system one embodiment's of the present invention schematic diagram;
Fig. 2 to Fig. 4 is the connection schematic diagram of fan control system embodiment illustrated in fig. 1;
Fig. 5 is another embodiment's of fan control system of the present invention schematic diagram;
Fig. 6 is the schematic diagram of fan control system one specific embodiment of the present invention;
Fig. 7 is the schematic diagram of fan control system one preferred embodiment of the present invention.
Embodiment
For making that object of the present invention, structure, feature and function thereof are had to further understanding, hereby coordinate embodiment to be described in detail as follows.
Please refer to Fig. 1 to Fig. 4, Fig. 1 is fan control system one embodiment's of the present invention schematic diagram, and Fig. 2 to Fig. 4 is the connection schematic diagram of fan control system embodiment illustrated in fig. 1.Fan control system 100 of the present invention, is applied to electronic equipment 200, and electronic equipment 200 is for example display unit or projecting apparatus, but is not limited to this.Fan control system 100 comprises: fan module 110, pressure sensor 120, control unit 130 and processing unit 140.Fan module 110 is arranged at the entrance 212 in the air channel 210 of electronic equipment 200, and can Bidirectional outlet air, and fan module 110 can be to the first wind direction D1 or the second wind direction D2 air-out.In an embodiment, this fan module 110 comprises at least one bidirectional fan, and the first wind direction D1 is contrary with the second wind direction D2.The contiguous fan modules 110 of pressure sensor 120 arrange, in order on the predetermined wind direction of sensing or the reverse wind of predetermined wind direction upward pressure.Please refer to Fig. 2, shown in Fig. 2 is the schematic diagram of the fan control system of fan module 110 while closing, when fan module 110 is closed, what pressure sensor 120 sensed is the atmospheric pressure of the environment in air channel 210, and now pressure sensor 120 senses the first sensing value P1, and when fan module 110 is opened, as shown in Figure 3, fan module 110 is to the direction blowing of pressure sensor 120, now pressure sensor 120 has the second sensing value P2, or as shown in Figure 4, fan module 110 is the direction blowing of pressure sensor 120 dorsad, and now the second sensing value of pressure sensor 120 is P2 ', because the difference of the blowing direction of fan module 110, cause the sensing value that pressure sensor 120 senses also can be different, in the present embodiment, at fan module 110 during in the first wind direction D1 air-out, be that fan module 110 is to the direction blowing of pressure sensor 120, the first sensing value P1 when the second sensing value P2 that therefore pressure sensor 120 now senses is greater than fan module 110 and closes, and at fan module 110 during in the second wind direction D2 air-out, it is the fan module 110 direction blowing of pressure sensor 120 dorsad, therefore the second sensing value P2 ' that pressure sensor 120 now senses is less than the first sensing value P1, thereby the first sensing value P1 sensing according to pressure sensor 120 and the second sensing value P2 (or P2 ') can judge the air-out direction of fan module 110.
Processing unit 140 is electrically connected pressure sensor 120, in order to obtain the sensing value of pressure sensor 120 and to judge that fan module 110 is to the first wind direction D1 air-out or to the second wind direction D2 air-out, sends control command according to the wind direction of fan module 110 simultaneously.Control unit 130 is electrically connected with fan module 110 and processing unit 140, in order to the control command of reception & disposal unit 140 and control the wind direction of fan module 110.Wherein, when the second sensing value P2 (or P2 ') and the first sensing value P1 have the first corresponding relation, processing unit 140 makes control unit 130 control fan module 110 transformation air-out directions.
In an embodiment, when the second sensing value P2 (or P2 ') and the first sensing value P1 have the first corresponding relation, processing unit 140 judgement fan modules 110 are the contrary wind direction air-out along predetermined wind direction, make control unit 130 control fan module 110 and change predetermined wind direction air-out into.When the second sensing value P2 (or P2 ') and the first sensing value P1 have the second corresponding relation, processing unit 140 judgement fan modules 110 are along predetermined wind direction air-out, make control unit 130 control fan module 110 and keep predetermined wind direction air-out.
In concrete enforcement, pressure sensor 120 is arranged on predetermined wind direction, in order to the predetermined wind of sensing, upward pressure, now, above-mentioned the first corresponding relation is that the second sensing value P2 (or P2 ') is less than the first sensing value P1, and the second corresponding relation is that the second sensing value P2 (or P2 ') is greater than the first sensing value.When if the second sensing value P2 (or P2 ') is greater than the first sensing value P1, when the first sensing value P1 and the second sensing value P2 (or P2 ') have the second corresponding relation, processing unit 140 judgement fan modules 110 are along predetermined wind direction air-out, make control unit 130 control fan module 110 and keep air-out direction, when if the second sensing value P2 (or P2 ') is less than the first sensing value P1, when the first sensing value P1 and the second sensing value P2 (or P2 ') have the first corresponding relation, processing unit 140 judgement fan modules 110 are the contrary wind direction air-out along predetermined wind direction, make control unit 130 control fan module 110 and change air-out direction with predetermined wind direction air-out.
Specifically, in an embodiment, default wind direction is the first wind direction D1, be in the situation that 110 assemblings of fan module are correct, its air-out direction is the first wind direction D1, and pressure sensor 120 is arranged in the entrance 212 in air channel 210, and fan module 110 is 210 interior blowings to air channel.When fan module 110 is opened, when the second sensing value of pressure sensor 120 is P2, during the first sensing value P1 when the second sensing value P2 is greater than fan module 110 and closes, processing unit 140 judgement fan modules 110 are the first wind direction D1 air-out, can judge 110 assemblings of fan module errorless, processing unit 140 sends control command to control unit 130 and makes control unit 130 control 110 maintenance the first wind direction D1 air-out of fan module; On the contrary, when the second sensing value sensing when pressure sensor 120 is P2 ', when the second sensing value P2 ' is less than the first sensing value P1,140 judgement fan modules 110 of processing unit are the second wind direction D2 air-out, can judge fan module 110 assembly defects, processing unit 140 sends control command to control unit 130 and makes control unit 130 control fan modules 110 change the first wind direction D1 air-out into, makes fan module 110 to correct air-out direction blowing.Therefore, even if it is anti-by 110 groups of fan modules because of carelessness to produce informant person, because electronic equipment 200 has above-mentioned fan control system 100, fan control system 100 can be certainly about to air-out direction and be adjusted to required direction, once therefore solve the technical problem that existing electronic equipment fan is organized anti-dismounting trouble.
But be not limited to this, in another embodiment, fan module 110 is assembled in correct situation, its predetermined air-out direction is the second wind direction D2, pressure sensor 120 is arranged at outside the entrance 212 in air channel 210 of electronic equipment 200, as shown in Figure 5, Fig. 5 is another embodiment's of fan control system of the present invention schematic diagram, and fan module 110 is 210 outer blowings to air channel.When after fan module 110 is opened, the second sensing value of pressure sensor 120 is P2, the second sensing value is that P2 is while being greater than the first sensing value P1, processing unit 140 judgement fan modules 110 are the second wind direction D2 air-out, can judge 110 assemblings of fan module correct, make control unit 130 control fan module 110 and keep the second wind direction D2 air-out; On the contrary, the second sensing value sensing when pressure sensor 120 is P2 ', the second sensing value is that P2 ' is while being less than the first sensing value P1, processing unit 140 judgement fan modules 110 are the first wind direction D1 air-out, can judge fan module 110 assembly defects, make control unit 130 control fan module 110 and change the second wind direction D2 air-out into.
In another embodiment, fan control system 100 comprises two pressure sensors 120, a pressure sensor 120 is arranged on the first wind direction D1, another pressure sensor 120 is arranged on the second wind direction D2, fan module 110 comprises plural bidirectional fan, when fan module 110 is closed, the sensing value of the pressure sensor 120 on the first wind direction D1 is P0, the sensing value of the pressure sensor 120 on the second wind direction D2 is P0 ', when fan module 110 is opened, the sensing value of the pressure sensor 120 on the first wind direction D1 is P3, the sensing value of the pressure sensor 120 on the second wind direction D2 is P3 ', suppose that fan module 110 is correct installation direction to the first wind direction D1 air-out, when P3 is greater than P0 and P3 ' and is less than P0 ', processing unit 140 judgement fan modules 110 are the first wind direction D1 air-out, all bidirectional fan installation directions are all correct, processing unit 140 makes control unit 130 control 110 continuation maintenance the first wind direction D1 air-out of fan module, when P3 ' is greater than P0 ', there is the second wind direction D2 air-out in processing unit 140 judgement fan modules 110, have a bidirectional fan installation direction mistake at least, it is the first wind direction D1 air-out that processing unit 140 makes control unit 130 control anti-loaded two-way wind shift.When fan module 110 is correct installation direction to the second wind direction D2 air-out, the controlling method of fan module 110 is similar, holds this and repeats no more.
In other embodiment, fan module can comprise first fan (not illustrating) of at least one the first wind direction D1 air-out and second fan (not illustrating) of at least one the second wind direction D2 air-out, control unit 130 is controlled fan module 110 when the first wind direction D1 air-out, controlling at least one first fan opens, control unit 130 is controlled fan module 110 when the second wind direction D2 air-out, controls at least one second fan and opens.
In an embodiment, fan control system 100 also has temperature-sensitive sticker (not illustrating), is electrically connected with processing unit, and temperature-sensitive sticker is in order to the temperature of sensing electronic equipment 200 and produce sensing temperature T; When sensing temperature T is greater than preset temperature T0, processing unit 140 sends control command to control unit 130, make control unit 130 improve the wind speed of fan module 110, thereby further reduce the temperature of electronic equipment 200, to improve the operating temperature of electronic equipment 200.
Please refer to Fig. 6 and Fig. 7, Fig. 6 is the schematic diagram of fan control system one specific embodiment of the present invention; Fig. 7 is the schematic diagram of fan control system one preferred embodiment of the present invention.The label of the element of the present embodiment fan control system is still continued to use the label of the counter element of previous embodiment.In this embodiment, fan control system 100 also comprises wind-force homogenization structure 150, wind-force homogenization structure 150 is arranged in the entrance 212 in air channel 210 of electronic equipment 200, the wind-force homogenization of wind-force homogenization structure 150 in order to fan module 110 is produced, thus stability and the uniformity of wind-force of fan module 110 noise while reducing by 110 work of fan module improved.
Preferably, wind-force uniforming device 150 is arranged between pressure sensor 120 and fan module 110, makes the sensing value of pressure sensor 120 comparatively stable, thereby improves the precision of processing unit 140 judgements.
Concrete, wind-force homogenization assembling structure 150 is reticular structure or high opening rate structure.
In a specific embodiment, wind-force homogenization structure 150 is plane structure, and as shown in Figure 5, in other embodiment, wind-force homogenization structure 150 can also be globoidal structure, and as shown in Figure 6, but the present invention is not as limit.
The present invention also provides another kind of fan control system, similar with the fan system 100 of above-described embodiment, and difference is only that the pressure sensor of the fan system of the present embodiment is arranged on the contrary wind direction of predetermined wind direction, upwards pressure in order to the contrary wind of sensing.Similarly, when fan module is closed, pressure sensor has the first sensing value, and when fan module is opened, pressure sensor has the second sensing value, now, above-mentioned the first corresponding relation is that the second sensing value is greater than the first sensing value, and the second corresponding relation is that the second sensing value is less than the first sensing value.Therefore,, when the second sensing value is less than the first sensing value, when the second sensing value and the first sensing value have the second corresponding relation, processing unit makes control unit control fan module maintenance air-out direction; When the second sensing value is greater than the first sensing value, when the second sensing value and the first sensing value have the first corresponding relation, processing unit makes control unit control fan module transformation air-out direction.
In a specific embodiment, when pressure sensor is arranged on the contrary wind direction of predetermined wind direction, if the second sensing value is greater than the first sensing value, processing unit judgement fan module is the contrary wind direction air-out along predetermined wind direction, making control unit control fan module transformation air-out direction is with predetermined wind direction air-out, if the second sensing value is less than the first sensing value, processing unit is sentenced fan module for along predetermined wind direction air-out, makes control unit control fan module and keeps predetermined wind direction air-out.
Particularly, in the correct situation of fan module group assembling, predetermined wind direction is the first wind direction, when the second sensing value is greater than the first sensing value, processing unit judgement fan module is the second wind direction air-out, judge that fan module group assembling is wrong, make control unit control fan module and change the first wind direction air-out into; When the second sensing value is less than the first sensing value, processing unit judgement fan module is the first wind direction air-out, and fan module group assembling is correct, makes control unit control fan module and keeps the first wind direction air-out.
In another embodiment, in the errorless situation of fan module group assembling, predetermined wind direction is the second wind direction, when the second sensing value is greater than the first sensing value, processing unit judgement fan module is the first wind direction air-out, judge that fan module group assembling is wrong, make control unit control fan module and change the second wind direction air-out into; When the second sensing value is less than the first sensing value, processing unit judgement fan module is the second wind direction air-out, judges that fan module group assembling is correct, makes control unit control fan module and keeps the second wind direction air-out.
To sum up, fan control system of the present invention makes electronic equipment no longer need to consider the Direct And Inverse Problems of fan assembling, has improved the efficiency of assembling.
The present invention is described by above-mentioned related embodiment, yet above-described embodiment is only for implementing example of the present invention.Must be pointed out that, the embodiment who has disclosed does not limit the scope of the invention.On the contrary, the change done without departing from the spirit and scope of the present invention and retouching, all belong to scope of patent protection of the present invention.
Claims (10)
1. a fan control system, is applied to electronic equipment, it is characterized in that this fan control system comprises:
Fan module that can Bidirectional outlet air, is arranged at the wind passage mouth of this electronic equipment, and this fan module is in order to along predetermined wind direction air-out;
Pressure sensor, contiguous this fan module arranges, in order to this predetermined wind direction of sensing maybe the contrary wind of this predetermined wind direction upward pressure, and when this fan module is closed, this pressure sensor has the first sensing value, and when this fan module is opened, this pressure sensor has the second sensing value;
Control unit, is electrically connected this fan module, and controls the wind direction of this fan module; And
Processing unit, is electrically connected with this pressure sensor and this control unit, to receive the sensing value of this pressure sensor and to send wind direction control command to this control unit;
Wherein, when this second sensing value and this first sensing value have the first corresponding relation, this processing unit makes this control unit control this fan module to change air-out direction.
2. fan control system as claimed in claim 1, it is characterized in that when this second sensing value and this first sensing value have the first corresponding relation, this processing unit judges that this fan module, for the contrary wind direction air-out along this predetermined wind direction, makes this control unit control this fan module and changes this predetermined wind direction air-out into.
3. fan control system as claimed in claim 1, it is characterized in that when this second sensing value and this first sensing value have the second corresponding relation, this processing unit judges that this fan module, for along this predetermined wind direction air-out, makes this control unit control this fan module and keeps this predetermined wind direction air-out.
4. fan control system as claimed in claim 3, it is characterized in that, when this pressure sensor upwards pressure in order to this predetermined wind of sensing, this first corresponding relation is less than this first sensing value for this second sensing value, and this second corresponding relation is greater than this first sensing value for this second sensing value.
5. fan control system as claimed in claim 3, it is characterized in that, when this pressure sensor upwards pressure in order to the contrary wind of this predetermined wind direction of sensing, this first corresponding relation is greater than this first sensing value for this second sensing value, and this second corresponding relation is less than this first sensing value for this second sensing value.
6. fan control system as claimed in claim 1, it is characterized in that, when this pressure sensor is arranged on this predetermined wind direction of this fan module, if this second sensing value is less than this first sensing value, this processing unit judges that this fan module is for the contrary wind direction air-out along this predetermined wind direction, making this control unit control this fan module transformation air-out direction is with this predetermined wind direction air-out, if this second sensing value is greater than this first sensing value, this processing unit judges that this fan module is along this predetermined wind direction air-out, make this control unit control this fan module and keep this predetermined wind direction air-out.
7. fan control system as claimed in claim 1, it is characterized in that, when this pressure sensor is arranged on the contrary wind direction of this predetermined wind direction, if this second sensing value is greater than this first sensing value, this processing unit judges that this fan module is for the contrary wind direction air-out along this predetermined wind direction, making this control unit control this fan module transformation air-out direction is with this predetermined wind direction air-out, if this second sensing value is less than this first sensing value, it is along this predetermined wind direction air-out that this processing unit is sentenced this fan module, make this control unit control this fan module and keep this predetermined wind direction air-out.
8. fan control system as claimed in claim 1, is characterized in that this fan control system also has temperature-sensitive sticker, in order to the temperature of this electronic equipment of sensing and produce sensing temperature; When this sensing temperature is greater than preset temperature, this processing unit makes this control unit improve the wind speed of this fan module.
9. fan control system as claimed in claim 1, is characterized in that this fan control system also comprises wind-force homogenization structure, is arranged in this air channel entrance the wind-force homogenization of this wind-force homogenization structure in order to this fan module is produced.
10. an electronic equipment, is characterized in that this electronic equipment has the fan control system as described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410293213.8A CN104074781B (en) | 2014-06-25 | 2014-06-25 | Fan control system and electronic installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410293213.8A CN104074781B (en) | 2014-06-25 | 2014-06-25 | Fan control system and electronic installation |
Publications (2)
| Publication Number | Publication Date |
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| CN104074781A true CN104074781A (en) | 2014-10-01 |
| CN104074781B CN104074781B (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410293213.8A Expired - Fee Related CN104074781B (en) | 2014-06-25 | 2014-06-25 | Fan control system and electronic installation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929966A (en) * | 2015-05-21 | 2015-09-23 | 珠海格力电器股份有限公司 | Device and control method for preventing centrifugal fan from reversing |
| CN112241139A (en) * | 2020-08-14 | 2021-01-19 | 苏州浪潮智能科技有限公司 | Method and device for identifying installation direction of server fan |
| CN112702883A (en) * | 2019-10-22 | 2021-04-23 | 株洲中车时代电气股份有限公司 | Heat dissipation circulation system of traction converter of alternating-current transmission locomotive |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1182393A (en) * | 1997-09-05 | 1999-03-26 | Sony Corp | Air blower and projector comprising the same |
| JP2005142204A (en) * | 2003-11-04 | 2005-06-02 | Nec Viewtechnology Ltd | Cooling fan unit, electronic apparatus, projector, and cooling fan controlling method |
| JP2008310132A (en) * | 2007-06-15 | 2008-12-25 | Hitachi Ltd | Projector device |
| CN101614341A (en) * | 2009-07-28 | 2009-12-30 | 苏州佳世达光电有限公司 | Light-emitting device and cooling means thereof, projecting apparatus |
| CN102231041A (en) * | 2011-06-07 | 2011-11-02 | 苏州佳世达光电有限公司 | Projector, projector fan rotating speed adjusting device and adjusting method thereof |
| US20120219399A1 (en) * | 2011-02-25 | 2012-08-30 | Nec Corporation | Electric device |
-
2014
- 2014-06-25 CN CN201410293213.8A patent/CN104074781B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1182393A (en) * | 1997-09-05 | 1999-03-26 | Sony Corp | Air blower and projector comprising the same |
| JP2005142204A (en) * | 2003-11-04 | 2005-06-02 | Nec Viewtechnology Ltd | Cooling fan unit, electronic apparatus, projector, and cooling fan controlling method |
| JP2008310132A (en) * | 2007-06-15 | 2008-12-25 | Hitachi Ltd | Projector device |
| CN101614341A (en) * | 2009-07-28 | 2009-12-30 | 苏州佳世达光电有限公司 | Light-emitting device and cooling means thereof, projecting apparatus |
| US20120219399A1 (en) * | 2011-02-25 | 2012-08-30 | Nec Corporation | Electric device |
| CN102231041A (en) * | 2011-06-07 | 2011-11-02 | 苏州佳世达光电有限公司 | Projector, projector fan rotating speed adjusting device and adjusting method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929966A (en) * | 2015-05-21 | 2015-09-23 | 珠海格力电器股份有限公司 | Device and control method for preventing centrifugal fan from reversing |
| CN112702883A (en) * | 2019-10-22 | 2021-04-23 | 株洲中车时代电气股份有限公司 | Heat dissipation circulation system of traction converter of alternating-current transmission locomotive |
| CN112241139A (en) * | 2020-08-14 | 2021-01-19 | 苏州浪潮智能科技有限公司 | Method and device for identifying installation direction of server fan |
| CN112241139B (en) * | 2020-08-14 | 2022-02-18 | 苏州浪潮智能科技有限公司 | Method and device for identifying installation direction of server fan |
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| Publication number | Publication date |
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| CN104074781B (en) | 2016-06-29 |
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