CN100578349C - Heat radiating device and projection machine heat radiation system - Google Patents
Heat radiating device and projection machine heat radiation system Download PDFInfo
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- CN100578349C CN100578349C CN200710130133A CN200710130133A CN100578349C CN 100578349 C CN100578349 C CN 100578349C CN 200710130133 A CN200710130133 A CN 200710130133A CN 200710130133 A CN200710130133 A CN 200710130133A CN 100578349 C CN100578349 C CN 100578349C
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- 230000005855 radiation Effects 0.000 title claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 27
- 230000017525 heat dissipation Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The invention discloses a heat dissipating device and a projector heat dissipating system, for using one fan to dissipate the heat of two or more heat sources. The heat dissipating device comprises an air channel with an air inlet and an air outlet, a fan arranged in the air channel, an air inlet chamber and an air outlet chamber which are formed at two sides of the fan. The projector heat dissipating system comprises a light source, a digit micro lens device with a heat radiator, and a heat dissipating device arranged between the heat radiator of the digit micro lens and the light source, wherein the heat dissipating device comprises an air channel with an air inlet and an air outlet, a fan arranged in the air channel, an air inlet chamber and an air outlet chamber which are formed at two sides of the fan, the heat radiator is arranged at the air inlet of the heat dissipating device and the light source is arranged at the air outlet of the heat dissipating device. The heat dissipating device is suitable for dissipating the heat of multiple heat sources for various products or systems.
Description
Technical field
The present invention relates to a kind of heat abstractor, relate in particular to a kind of cooling system of projector.
Background technology
At present, along with the function and the complicacy of electronic product improves day by day, power consumption constantly increases, and the loss of power is converted to certain heat energy usually.The miniaturization of electronic product requires to make again the heat flow density (being the heat that is transmitted by the unit heat transfer area in the unit interval) of product sharply to rise, and causes the temperature rise of electronic product to improve rapidly, influences reliability of products and serviceable life.
In projector's product, the problem performance that heat flow density sharply rises is particularly outstanding.According to the image-forming principle of projector, the high light that is sent by the high-pressure sodium lamp light source is reflected light to according to the requirement of signal by DMD (DigitalMicromirror Device, digital micro-mirror device) and forms image on the screen after the colour wheel color separation.For obtaining the brightness output of high lumen, must realize by adopting powerful light source.Under the situation of pursuing projector's miniaturization, high brightness, the power density of projector is high than other electronic product.Wherein, the power consumption of light source accounts for 75% of total system power consumption, so the heat dissipation design of light source is the critical component of heat radiation system of projector design.
The hear rate of DMD comprises that also a part absorbs the energy from light source except that the heat of the generation of himself working.DMD can be reliable and stable work, strict temperature rise control is the assurance of its necessity.Therefore, the heat dissipation design of DMD also is the key content of heat radiation system of projector design.
Wind-cooling heat dissipating is one of common radiating mode.Common wind-cooling heat dissipating is to be taked to dry in the thermal source position or the mode of air draught is dispelled the heat by fan.
Utility model patent 02251872.X discloses a kind of heat abstractor of projector.This heat abstractor is by thermal source parts bulb and wick thereof are disposed fan respectively, and by means of the guiding of air channel to air-flow, realizes that light source to projector dispels the heat.In the existing projector, thermal source parts such as DMD and colour wheel are also dispelled the heat by disposing corresponding radiator fan respectively.
Like this, in the middle of a product,, then need be equipped with corresponding radiator fan respectively at each thermal source position if a plurality of thermals source position is arranged.And in same product, use a plurality of radiator fans, not only cause complex structure, poor, the cost problem of higher of manufacturability, but also can increase the noise and the vibration of product.
Summary of the invention
The present invention will solve technical matters is provided a kind of heat abstractor, can use a fan to realize being dispelled the heat in two thermal source positions.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
This heat abstractor, comprise the air channel with air inlet and air outlet, be provided with fan in inside, air channel, the air inlet of described heat abstractor is aimed at the lower thermal source parts of temperature, the air outlet of described heat abstractor is aimed at the higher thermal source parts of temperature, and the height of air outlet is higher than the height of air inlet.
Also be provided with the dividing plate that has open-work in the middle of in inside, described air channel, form air-inlet cavity between described air inlet and the described dividing plate, form the air-out chamber between described air outlet and the described dividing plate; Described fan is installed in the air-inlet cavity, and the air outlet of fan is corresponding with the open-work in the middle of the dividing plate, and the periphery of the open-work in the middle of the air outlet periphery of fan and the dividing plate forms hermetic seal; Perhaps, described fan is installed in the air-out chamber, and the air inlet of fan is corresponding with the open-work in the middle of the dividing plate, and the periphery of the open-work in the middle of the air inlet periphery of fan and the dividing plate forms hermetic seal.
The air-out chamber in described air channel is punctured into taper gradually along the air outlet direction.
Adopt this heat abstractor, with two thermal source positions in the product, place the air inlet and the air outlet in this heat abstractor air channel respectively, rotation by means of the fan of inside, air channel, make air-flow flow to the other end from an end in air channel, thereby quickened the speed air flow on surface, thermal source position, quickened distributing of heat that the thermal source position produced.Like this, just can adopt a fan to be dispelled the heat in two different thermal source positions simultaneously, simple in structure, need not dispose corresponding radiator fan respectively at each thermal source position, reduced production cost, can also reduce the noise and the vibration of projector itself simultaneously.
In addition, fan is placed inside, air channel, not only can save installing space, and be converted to the malleation air-flow that flows out from air outlet by the negative-pressure air-flow that fan will flow into air inlet, quickened air-flow flowing in the air channel, quicken the flowing velocity of surface, thermal source position air accordingly, helped improving radiating effect.
Another technical matters to be solved by this invention provides a kind of heat radiation system of projector, can use a fan to realize digital micro-mirror device in the projector and light source are dispelled the heat.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
This heat radiation system of projector comprises: light source and digital micro-mirror device are equipped with heat abstractor between digital micro-mirror device and light source; Wherein, described heat abstractor comprises the air channel with air inlet and air outlet, is provided with fan in inside, air channel; Described digital micro-mirror device is positioned at the air inlet of heat abstractor, and light source is positioned at the air outlet of heat abstractor.
Described digital micro-mirror device is equipped with heating radiator, and this heating radiator is positioned at the air inlet of heat abstractor, and the heat dissipation channel of heating radiator is consistent with the air flow direction of the air inlet that enters heat abstractor.
Also be provided with the dividing plate that has open-work in the middle of in inside, described air channel, form air-inlet cavity between described air inlet and the described dividing plate, form the air-out chamber between described air outlet and the described dividing plate; Described fan is installed in the air-inlet cavity, and the air outlet of fan is corresponding with the open-work in the middle of the dividing plate, and the periphery of the open-work in the middle of the air outlet periphery of fan and the dividing plate forms hermetic seal.
The air-out chamber in described air channel is punctured into taper gradually along the air outlet direction.The height of air outlet is higher than the height of air inlet.
Further, described heat dissipation wind channel is " people " font; Described digital micro-mirror device and light source lay respectively at two opening parts of " people " font heat dissipation wind channel bottom; Described fan is positioned at the inner opening part near the top of " people " font heat dissipation wind channel.
Adopt this heat radiation system of projector, digital micro-mirror device is arranged in the air inlet of heat abstractor, light source arrangement is at the air outlet of heat abstractor, rotation by means of the fan of inside, air channel, make air-flow flow to air outlet from the air inlet in air channel, thereby quickened the speed air flow on digital micro-mirror device and light source surface, quickened distributing of the heat that digital micro-mirror device and light source produced, like this.Just can adopt a fan to be dispelled the heat in two different thermal source positions of digital micro-mirror device and light source simultaneously, simple in structure, need not dispose corresponding radiator fan respectively at digital micro-mirror device and light source, reduce production cost, can also reduce the noise and the vibration of projector itself simultaneously.
In addition, fan is placed inside, air channel, not only can save installing space, and be converted to the malleation air-flow that flows out from air outlet by the negative-pressure air-flow that fan will flow into air inlet, quickened air-flow flowing in the air channel, quicken the flowing velocity of surface, thermal source position air accordingly, helped improving radiating effect.
Description of drawings
Fig. 1 is the sectional view of the utility model heat abstractor;
Fig. 2 is the structural representation that adopts the heat radiation system of projector of heat abstractor shown in Figure 1;
Fig. 3 is the front view of the heating radiator of digital micro-mirror device in the heat radiation system of projector shown in Figure 2;
Fig. 4 is the left view of the heating radiator of digital micro-mirror device shown in Figure 3.
Embodiment
Below in conjunction with accompanying drawing detailed explanation is done in concrete enforcement of the present invention.
As shown in Figure 1, heat abstractor 1 of the present invention, comprise air channel 100 with air inlet 2 and air outlet 3,100 inside are provided with fan 4 in the air channel, air inlet 2 is aimed at the lower thermal source parts of temperature, institute's air outlet 3 is aimed at the higher thermal source parts of temperature, and the height of air outlet 3 is higher than the height of air inlet 2.
Adopt this heat abstractor, with the two or more thermals source position in the product, place the air inlet and the air outlet in this heat abstractor air channel respectively, rotation by means of the fan of inside, air channel, make air-flow flow to the other end from an end in air channel, thereby quickened the speed air flow on surface, thermal source position, quickened distributing of heat that the thermal source position produced.Like this, just can adopt a fan to be dispelled the heat in two different thermal source positions simultaneously, simple in structure, need not dispose corresponding radiator fan respectively at each thermal source position, reduced production cost, can also reduce the noise and the vibration of product itself simultaneously.
In addition, fan is placed inside, air channel, not only can save installing space, and be converted to the malleation air-flow that flows out from air outlet by the negative-pressure air-flow that fan will flow into air inlet, quickened air-flow flowing in the air channel, quicken the flowing velocity of surface, thermal source position air accordingly, helped improving radiating effect.
Airflow reflux in the air channel has the dividing plate 5 that has open-work in the middle of between described air-inlet cavity 6 and air-out chamber 7; Described fan 4 is installed in air-inlet cavity interior 6, the air outlet of fan 4 is corresponding with the open-work in the middle of the dividing plate 5, and the periphery of the open-work in the middle of the air outlet periphery of fan 4 and the dividing plate 5 forms hermetic seal, form the chamber of a sealing like this at the air intake surface of fan, prevent that the air-flow that flows in the air-out chamber from being sucked back by fan once more, backflow phenomenon takes place, thereby influences radiating effect.Simultaneously help also guaranteeing that the air-flow in the air-out chamber has enough pressure, blow out from air outlet rapidly.
Certainly, also described fan 4 can be installed in the air-out chamber 7, the air inlet of fan 4 is corresponding with the open-work in the middle of the dividing plate 5, and the periphery formation hermetic seal of the open-work in the middle of the air inlet periphery of fan and the dividing plate.
For guaranteeing in the air-inlet cavity 6 enough space mounting fans are arranged, simultaneously help saving material again, and guarantee that further the air-flow in the air-out chamber 7 has enough pressure, and blowing out from air outlet rapidly, the interior space dimension of the air-inlet cavity 6 in air channel is greater than the interior space dimension in air-out chamber 7.
In addition, for further guaranteeing the air-flow in the air-out chamber enough pressure is arranged, flow out from air outlet rapidly, air-out chamber 7 can be made into the pyramidal structure of shrinking gradually to air outlet.
In order to alleviate the impact to fan blade of the air-flow that enters air-inlet cavity, described air inlet 2 oblique air-inlet cavities 6 can make the air-flow that enters air-inlet cavity obtain to enter fan 4 after the buffering like this.
Take away for the heat that the air-flow that guarantees to blow out in the air-out chamber can be produced the thermal source position that is positioned at air outlet fully, be provided with the spiral groove (not shown) in the position of the close air outlet of described air-out cavity wall.The air-flow that blows out from air outlet is spiral air-flow like this, can fully arrive the surface at thermal source position, fully takes away thereby will be positioned at the heat that the thermal source position at air outlet place produced.
For guaranteeing radiating effect, the air inlet of described heat abstractor is aimed at the lower thermal source parts of temperature, and the air outlet of described heat abstractor is aimed at the higher thermal source parts of temperature.
For ease of unobstructed the flowing of the air-flow in the air channel, the height of the air outlet of heat abstractor is higher than the height of air inlet.
Described in the present embodiment fan adopts centrifugal fan.Centrifugal fan claims " turbofan " again, and air inlet is positioned at the side of fan, does not have barrier on the blowing direction, so in each position same air-flow is arranged all.The range of adjustment of its blast and air quantity is also bigger simultaneously, the better effects if of rotating speed control.Certain described fan also can adopt the fan of other types.
As shown in Figure 2, the present invention also provides a kind of heat radiation system of projector, and this heat radiation system of projector comprises: light source 8 and digital micro-mirror device 9 are equipped with heat abstractor 1 between digital micro-mirror device 9 and light source; Wherein, described heat abstractor 1 comprises: have the air channel of air inlet 2 and air outlet 3, be provided with fan 4 in inside, air channel; Described digital micro-mirror device 9 is positioned at the air inlet of heat abstractor 1, and light source 8 is positioned at the air outlet of heat abstractor 1.
Described light source can be bulb, and the rim of a cup side of bulb is positioned at the air outlet place of heat abstractor.
For strengthening the radiating effect of described digital micro-mirror device 9, digital micro-mirror device 9 is equipped with heating radiator 10
(as shown in Figure 3, Figure 4), this heating radiator 10 is positioned at the air inlet of heat abstractor 1, and the heat dissipation channel of heating radiator 10 is consistent with the air flow direction of the air inlet that enters heat abstractor 1, can guarantee like this heat on heating radiator 10 surfaces of digital micro-mirror device 9 is fully taken away.Shown in the figure 11 is projector optical-mechanical.
Because the temperature rise of the heating radiator of digital micro-mirror device is much lower than bulb,, can not influence the normal heat radiation of bulb so when the heat that fan is put aside is taken away, give wind-cooling heat dissipating in the mode of blowing to the Lamp cup of bulb again on the DMD heating radiator.
There is a turning in described air outlet 3 relative air channels.Excessive for the pressure loss of avoiding the air outlet air-flow, this turning is unsuitable excessive, should be controlled in the suitable scope.
Adopt this heat radiation system of projector, the heating radiator of digital micro-mirror device is arranged in the air inlet of heat abstractor, light source arrangement is at the air outlet of heat abstractor, rotation by means of the fan of inside, air channel, make air-flow flow to air outlet from the air inlet in air channel, thereby quickened the heating radiator of digital micro-mirror device and the speed air flow on light source surface, quickened the distributing of the heat that heating radiator and light source produced of digital micro-mirror device, like this.Just can adopt a fan to be dispelled the heat in two different thermal source positions of heating radiator and light source of digital micro-mirror device simultaneously, simple in structure, need not dispose corresponding radiator fan respectively at the heating radiator and the light source of digital micro-mirror device, reduce production cost, can also reduce the noise and the vibration of projector itself simultaneously.
The various structures of foregoing heat abstractor all can be applicable to not repeat them here in this heat radiation system of projector.
Certainly, " people " font structure also can be adopted in the air channel in the heat radiation system of projector of the present invention.The heating radiator and the light source of described digital micro-mirror device lays respectively at two opening parts of bottom, " people " font air channel; Described fan is positioned at the opening part at inner and close top, " people " font air channel, air channel.
Described fan is drawing-in type or forced fan.
When fan was vacuum fan, the heating radiator and the light source of described digital micro-mirror device laid respectively at two air inlet places of bottom, " people " font air channel; Air-flow blows out from the another one opening part.
When fan was forced fan, the heating radiator and the light source of described digital micro-mirror device laid respectively at two air outlet places of bottom, " people " font air channel; Air-flow sucks out from the another one opening part.
Adopt the air channel of this " people " font structure, only can reach the purpose of just can be simultaneously the heating radiator and the light source of digital micro-mirror device being dispelled the heat respectively equally with a fan.
Further, in order also colour wheel to be dispelled the heat in to the heating radiator of digital micro-mirror device and light source heat radiation, the structure that is " ten " font can be adopted roughly in the air channel in the described heat radiation system of projector.The heating radiator of described digital micro-mirror device, light source and colour wheel lay respectively at three opening parts of " ten " font heat dissipation wind channel; Described fan is positioned at inner and close its another opening part of " ten " font heat dissipation wind channel.
Described fan also can be drawing-in type or forced fan.
When fan was vacuum fan, the heating radiator of described digital micro-mirror device, light source and colour wheel laid respectively at three air inlet places of bottom, " ten " font air channel; Air-flow blows out from the another one opening part.
When fan was forced fan, the heating radiator of described digital micro-mirror device, light source and colour wheel laid respectively at three air outlet places of bottom, " ten " font air channel; Air-flow sucks from the another one opening part.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those of ordinary skill in the art are in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (8)
1, a kind of heat abstractor, comprise air channel with air inlet and air outlet, be provided with fan in inside, air channel, it is characterized in that: the air inlet of described heat abstractor is aimed at the lower thermal source parts of temperature, the air outlet of described heat abstractor is aimed at the higher thermal source parts of temperature, and the height of air outlet is higher than the height of air inlet.
2, heat abstractor according to claim 1 is characterized in that: also be provided with the dividing plate that has open-work in the middle of in inside, described air channel, form air-inlet cavity between described air inlet and the described dividing plate, form the air-out chamber between described air outlet and the described dividing plate;
Described fan is installed in the air-inlet cavity, and the air outlet of fan is corresponding with the open-work in the middle of the dividing plate, and the periphery of the open-work in the middle of the air outlet periphery of fan and the dividing plate forms hermetic seal;
Perhaps, described fan is installed in the air-out chamber, and the air inlet of fan is corresponding with the open-work in the middle of the dividing plate, and the periphery of the open-work in the middle of the air inlet periphery of fan and the dividing plate forms hermetic seal.
3, heat abstractor according to claim 2 is characterized in that: the air-out chamber in described air channel is punctured into taper gradually along the air outlet direction.
4, a kind of heat radiation system of projector comprises: light source and digital micro-mirror device is characterized in that: between digital micro-mirror device and light source heat abstractor is installed;
Wherein, described heat abstractor comprises the air channel with air inlet and air outlet, suffers inside to be provided with fan at wind; Described digital micro-mirror device is positioned at the air inlet of heat abstractor, and light source is positioned at the air outlet of heat abstractor.
5, heat radiation system of projector according to claim 4, it is characterized in that: described digital micro-mirror device is equipped with heating radiator, this heating radiator is positioned at the air inlet of heat abstractor, and the heat dissipation channel of heating radiator is consistent with the air flow direction of the air inlet that enters heat abstractor.
6, heat radiation system of projector according to claim 4, it is characterized in that: also be provided with the dividing plate that has open-work in the middle of in inside, described air channel, form air-inlet cavity between described air inlet and the described dividing plate, form the air-out chamber between described air outlet and the described dividing plate; Described fan is installed in the air-inlet cavity, and the air outlet of fan is corresponding with the open-work in the middle of the dividing plate, and the periphery of the open-work in the middle of the air outlet periphery of fan and the dividing plate forms hermetic seal.
7, heat radiation system of projector according to claim 6 is characterized in that: the air-out chamber in described air channel is punctured into taper gradually along the air outlet direction.
8, heat radiation system of projector according to claim 4 is characterized in that: the height of air outlet is higher than the height of air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710130133A CN100578349C (en) | 2007-07-20 | 2007-07-20 | Heat radiating device and projection machine heat radiation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710130133A CN100578349C (en) | 2007-07-20 | 2007-07-20 | Heat radiating device and projection machine heat radiation system |
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| Publication Number | Publication Date |
|---|---|
| CN101349857A CN101349857A (en) | 2009-01-21 |
| CN100578349C true CN100578349C (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200710130133A Active CN100578349C (en) | 2007-07-20 | 2007-07-20 | Heat radiating device and projection machine heat radiation system |
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| CN (1) | CN100578349C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105739244B (en) * | 2014-12-07 | 2018-03-02 | 上海微电子装备（集团）股份有限公司 | The via design method of projection lens of lithography machine and its lens supports |
| CN206096737U (en) * | 2016-09-18 | 2017-04-12 | 深圳市光峰光电技术有限公司 | Cooling device and projection arrangement |
| CN109274595A (en) * | 2018-11-19 | 2019-01-25 | 江苏德联达智能科技有限公司 | Router radiator |
| CN113613473A (en) * | 2021-08-13 | 2021-11-05 | 宁波视睿迪光电有限公司 | Convection circulation control method and device, convection circulation controller and storage medium |
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| CN101349857A (en) | 2009-01-21 |
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Address after: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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