CN102705795A - Water flow heat conduction method and high-power light emitting diode (LED) plant growth illumination device - Google Patents
Water flow heat conduction method and high-power light emitting diode (LED) plant growth illumination device Download PDFInfo
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- CN102705795A CN102705795A CN201210173743XA CN201210173743A CN102705795A CN 102705795 A CN102705795 A CN 102705795A CN 201210173743X A CN201210173743X A CN 201210173743XA CN 201210173743 A CN201210173743 A CN 201210173743A CN 102705795 A CN102705795 A CN 102705795A
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Abstract
The invention relates to a method for radiating a high-power light emitting diode (LED) plant growth illumination device by using water flow. At present, a method for radiating an LED lamp solves the problem of a poor radiating effect to a certain extent, but the accompanying problems of a heavy radiating structure and the like heavily influence the application and popularization of the high-power LED lamp. Heat generated by the high-power LED plant growth illumination device is taken away by the water flow in facility agriculture, the range of water flow velocity is determined according to the power of the high-power LED plant growth illumination device, the working temperature of the high-power LED plant growth illumination device is monitored by a temperature sensor, the temperature sensor feeds the acquired working temperature information back to a water flow control valve, and the water flow velocity is adjusted by the water flow control valve. The passive mode of cooling and radiating the LED lamp is changed into an active mode, the effect is good, working reliability is high, and the high-power LED plant growth illumination device is easy and convenient to install integrally and light in weight and has a compact structure and long working life.
Description
Technical field
The present invention relates to a kind of method and employed great power LED plant growth lighting device thereof that utilizes current that great power LED plant growth lighting device is dispelled the heat.
Background technology
The internal quantum efficiency of LED is high not enough at present; Estimate with the existing level of production and technical merit; It is luminous that the power that is input to LED at most also has only 30-40% to be used for, and all the other all come out with the heat energy form, and because the improving constantly of led chip input power; The a series of problems such as light, electricity, look that involve because of heat dissipation problem seem more outstanding, are seriously restricting the development of high-power LED lamp industry.The LED junction temperature not only influences the long-time life-span, yet directly influences the luminous efficiency of short time.If luminous when being 25 ℃ with junction temperature is 100%, when junction temperature rose to 60 ℃ so, its luminous quantity just had only 90%; When being 100 ℃, junction temperature just drops to 80%; 140 ℃ are just had only 70%.In addition; The heating of LED can make also that its spectrum moves, colour temperature raises, forward current increases that (during the constant voltage power supply), reversing the current also increase, variety of problems such as thermal stress increases, the aging acceleration of fluorescent material epoxy resin; Thus, the heat radiation of LED is an of paramount importance problem in the design of LED light fixture.
The heat radiation approach of whole illuminating lamp: outside LED → pcb board (aluminium base) → thermal conductive insulation glue → metal shell → lamp body; Though metal substrates such as aluminium base have very good heat conductivility and high-intensity electrical insulation properties; But the heat radiation approach is oversize, and the heat that LED produces is difficult for getting rid of.Like one Chinese patent application number 200510011451.6 disclosed LED lamps, it dispels the heat through the mode that connects a heat radiation plate in LED substrate bottom.But the radiating effect of this radiating mode is not fully up to expectations, and is very easily overheated and aging, influenced service life greatly.Or dispel the heat through evaporation tube, be provided with cooling medium in the evaporation tube, form closed circuit between some evaporation tubes, cooling medium is absorbing heat after the pervaporation tube loop distributes heat.Chinese patent CN102032513A provides a kind of mandatory water-cooled LED street lamp, comprises lamp body, and driving power is installed on it, and lamp body is electrically connected with the city through the civil power access tube on the driving power; The inside of said lamp body is provided with the fluid chamber of optics cavity that optical instrument is housed, filled with fluid and the pcb board of some LED lamps is housed, and pcb board directly contacts with the interior liquid of fluid chamber, utilizes liquid that heat is taken away.The LED of use liquid-cooling heat dissipation structure is also arranged; The heat exchanger that the heat that produces when being bundled in the LED work on aluminium or the copper base is close to it absorbs to be transmitted in the liquid heat radiation media and goes; Lamp outer casing and heat exchanger fit tightly, and the heat in the liquid heat radiation media is loose in air by lamp outer casing.
Except above-mentioned radiator structure or method; The radiating mode of LED light fixture also has at present: Natural Heat Convection; Install the fan forced heat radiation additional, adopt heat pipe and loop heat pipe heat radiation etc., it is low wherein to install fan forced heat radiation system process complicacy and the functional reliability of system own additional; Heat pipe and loop heat pipe cost are high, install complicated; And Natural Heat Convection is in the passive type situation; Its effect depends on the shape and the volume of metal heat sink fully; Along with the increase of LED lamp power, the volume and weight of its metal heat sink will constantly increase, and have a strong impact on the security performance and the manufacturing cost of light fixture.Although said method has solved the problem of heat radiation aspect to a certain extent; But thing followed problem is that radiator structure is heavy, the radiator structure design is complicated, consumptive material weight many, light fixture itself are big; Improve use and manufacturing cost, seriously influenced the application of high-power LED lamp.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defective that above-mentioned prior art exists; A kind of current heat-conducting method is provided; Control the operating temperature of great power LED plant growth lighting device through the control water velocity; It is active that LED cooling and heat radiation are changed into from passive type, improves radiating effect, to solve the heat dissipation problem of great power LED plant growth lighting device.
For this reason; The present invention realizes through following technical scheme: the current heat-conducting method; It is characterized in that; Utilize the current in the industrialized agriculture to take away the heat of its generation,, utilize the operating temperature of temperature sensor monitors great power LED plant growth lighting device then earlier according to the scope of the watt level decision water velocity of great power LED plant growth lighting device through great power LED plant growth lighting device; Temperature sensor feeds back to water flow control valve with the operational temperature information that obtains; Regulate water velocity through water flow control valve, thus the operating temperature of control great power LED plant growth lighting device, and the heat that produces when great power LED plant growth lighting device is worked takes the external world to.The present invention adopts the water in the industrialized agriculture to take away heat, has utilized ready-made resource, because of the glassware for drinking water in the industrialized agriculture has more suitable temperature (in 35 ℃), neither influences the luminous efficiency of great power LED plant growth lighting device, does not also influence service life.
Another object of the present invention provides the great power LED plant growth lighting device that above-mentioned current heat-conducting method uses; The LED base substrate that comprises heat conduction; It is characterized in that at least one group of LED lamp group is equipped with in the bottom of said LED base substrate, the radiator structure surface of the end face of LED base substrate and a hollow fits tightly; This radiator structure has metal shell, and the center forms at least one water stream channel.The present invention fits tightly the radiator structure surface in hollow with the LED base substrate, utilizes " water heat absorption " principle, and the water of heat absorption flows away from the water stream channel of radiator structure, and most of heat that the LED lamp is produced takes the external world to; The present invention can also utilize metal shell to loose the fraction heat that the LED lamp produces in air.The shell of radiator structure adopts copper or the high made of thermal conductivity factors such as aluminium, magnadure.
As further technical scheme; The leading section of said radiator structure is provided with the water inlet that communicates with water stream channel; Rearward end is provided with the delivery port that communicates with water stream channel, and radiator structure is connected on and is used for carrying in the water pipe of industrialized agriculture water, and described water flow control valve is housed on this water pipe.Water flow control valve can be mechanical type control valve or intelligent controlling valve; Control mode is perhaps controlled the water inlet (power does not carry out with single control simultaneously, carries out with unified control when power is identical) of single lighting device for the current of a plurality of lighting device delivery ports of unified control.
As further technical scheme, the water inlet end of said water stream channel and water side form one and make the mobile automatically inclination angle of water, and water can be flowed because of the effect of gravity naturally, make water flows and need not to add driving force.Water stream channel is shape, shaped form, spirality or other shapes linearly, and preference curve shape and spirality make the contact area of water and its inwall big, and radiating effect is better; The cross section of water stream channel is rectangular, triangle, circle or other shapes, and circular makes the contact area of water and its inwall big, and radiating effect is better.
As further technical scheme, described temperature sensor has a plurality of, monitors the multi-point temp on LED base substrate and the radiator structure respectively, makes the operating temperature control of LED lamp more accurate.
As further technical scheme, described LED lamp group is combined by high-power red-light LED and blue-ray LED or is combined by large power white light LED and red-light LED, selects according to actual needs.
It is active and respond well to the invention enables cooling of LED lamp and heat radiation to change into from passive type, and functional reliability is high, and integral installation is easy, and compact conformation is in light weight, long working life.Temperature when the radiator structure that the present invention adopts makes the light fixture operate as normal is between average 25-33 ℃, and radiating effect has improved more than 40% than general LED light fixture, has solved the heat dissipation problem of great power LED plant growth lighting device.
The radiator structure that great power LED plant growth lighting device of the present invention adopts and the greenhouse desired moisture level is bigger, temperature is controlled at 35 degrees centigrade and combines with interior characteristics; And the size according to power is regulated and control water velocity; The LED lamp is dispelled the heat, and so not only radiating efficiency is high, has avoided great power LED plant growth lighting device because of the overheated too early light decay that causes; And saved the aluminium section bar radiator of thick heaviness, reduced cost.
Below in conjunction with the Figure of description and the specific embodiment the present invention is described further.
Description of drawings
Fig. 1 is the schematic diagram of current heat dissipating method of the present invention.
Fig. 2 is a great power LED plant growth lighting schematic representation of apparatus of the present invention.
Sketch map when Fig. 3 uses for great power LED plant growth lighting device of the present invention.
The specific embodiment
Great power LED plant growth lighting device shown in Fig. 2-3; Three groups of LED lamp groups 4 are equipped with in the bottom of the LED base substrate 1 of heat conduction; LED lamp group is combined by high-power red-light LED and blue-ray LED or is combined by large power white light LED and red-light LED, selects according to actual needs.The end face of LED base substrate 1 and the radiator structure of hollow 3 surfaces fit tightly, and this radiator structure has metal shell, and the center forms 4 water stream channels 2.The leading section of radiator structure 3 is provided with the water inlet 5 that communicates with water stream channel, and rearward end is provided with the delivery port 6 that communicates with water stream channel, and radiator structure is connected on and is used for carrying in the water pipe of industrialized agriculture water, and described water flow control valve 7 is housed on this water pipe.The height of water stream channel water side is a little less than the height of water inlet end, forms one and makes water from inclination angle that water inlet end flows to the water side automatically.
Current heat-conducting method as shown in Figure 1, great power LED plant growth lighting device is equipped with temperature sensor; Determine the scope of water velocity earlier according to the watt level of great power LED plant growth lighting device; Utilize temperature sensor to monitor multi-point temp on LED base substrate and the radiator structure respectively then with feedback information feedwater flow control valve; And through water flow control valve control water velocity, thereby reach the purpose of controlling LED lamp operating temperature.
The above is merely the preferred embodiments of the present invention and oneself, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. current heat-conducting method; It is characterized in that; Utilize current in the industrialized agriculture to take away the heat of its generation through great power LED plant growth lighting device; Determine the scope of water velocity earlier according to the watt level of great power LED plant growth lighting device, utilize the operating temperature of temperature sensor monitors great power LED plant growth lighting device then, temperature sensor feeds back to water flow control valve with the operational temperature information that obtains; Regulate water velocity through water flow control valve, thus the operating temperature of control great power LED plant growth lighting device.
2. the great power LED plant growth lighting device that uses of the said current heat-conducting method of claim 1; The LED base substrate (1) that comprises heat conduction; It is characterized in that at least one group of LED lamp group (4) is equipped with in the bottom of said LED base substrate, radiator structure (3) surface of the end face of LED base substrate (1) and a hollow fits tightly; This radiator structure has metal shell, and the center forms at least one water stream channel (2).
3. great power LED plant growth lighting device according to claim 2; It is characterized in that; The leading section of said radiator structure (3) is provided with the water inlet (5) that communicates with water stream channel; Rearward end is provided with the delivery port (6) that communicates with water stream channel, and radiator structure is connected on and is used for carrying in the water pipe of industrialized agriculture water, and described water flow control valve (7) is housed on this water pipe.
4. great power LED plant growth lighting device according to claim 3 is characterized in that, the water inlet end of said water stream channel and water side form one and make the mobile automatically inclination angle of water.
5. according to claim 3 or 4 described great power LED plant growth lighting devices, it is characterized in that, curved shape of described water stream channel or spirality, the cross section of water stream channel is rounded.
6. great power LED plant growth lighting device according to claim 4 is characterized in that described temperature sensor has a plurality of, monitors the multi-point temp on LED base substrate and the conductive structure respectively.
7. great power LED plant growth lighting device according to claim 2 is characterized in that, described LED lamp group is combined by high-power red-light LED and blue-ray LED or combined by large power white light LED and red-light LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210173743XA CN102705795A (en) | 2012-05-28 | 2012-05-28 | Water flow heat conduction method and high-power light emitting diode (LED) plant growth illumination device |
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| CN201210173743XA CN102705795A (en) | 2012-05-28 | 2012-05-28 | Water flow heat conduction method and high-power light emitting diode (LED) plant growth illumination device |
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| CN102705795A true CN102705795A (en) | 2012-10-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448866A (en) * | 2017-09-11 | 2017-12-08 | 浙江省金华市第特种灯泡厂 | A kind of LED lamp component and automobile |
| WO2021165875A1 (en) * | 2020-02-19 | 2021-08-26 | Pate Aline | Automated vertical plant cultivation system and methodology |
| RU209726U1 (en) * | 2021-11-11 | 2022-03-21 | Федеральное государственное бюджетное научное учреждение «Федеральный научный агроинженерный центр ВИМ» (ФГБНУ ФНАЦ ВИМ) | Liquid phytoirradiator for plants |
| RU2777658C1 (en) * | 2021-12-01 | 2022-08-08 | Федеральное государственное бюджетное научное учреждение "Федеральный научный агроинженерный центр ВИМ" (ФГБНУ ФНАЦ ВИМ) | Led liquid phyto-irradiator of circular irradiation for plants |
Citations (5)
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| CN201680321U (en) * | 2010-04-19 | 2010-12-22 | 上海理工大学 | Heat dissipation system of classroom LED lighting device |
| CN201811100U (en) * | 2009-10-29 | 2011-04-27 | 诸建平 | LED plant lamp |
| WO2011117778A1 (en) * | 2010-03-22 | 2011-09-29 | Koninklijke Philips Electronics N.V. | Lighting system with cooling arrangement |
| CN202059783U (en) * | 2011-01-19 | 2011-12-07 | 深圳市佰晟光电科技有限公司 | LED lighting fixture with light source control system |
| CN202561604U (en) * | 2012-05-28 | 2012-11-28 | 杭州汉徽光电科技有限公司 | Water-flow heat conduction type high-power light-emitting diode (LED) plant growth lighting device |
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2012
- 2012-05-28 CN CN201210173743XA patent/CN102705795A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201811100U (en) * | 2009-10-29 | 2011-04-27 | 诸建平 | LED plant lamp |
| WO2011117778A1 (en) * | 2010-03-22 | 2011-09-29 | Koninklijke Philips Electronics N.V. | Lighting system with cooling arrangement |
| CN201680321U (en) * | 2010-04-19 | 2010-12-22 | 上海理工大学 | Heat dissipation system of classroom LED lighting device |
| CN202059783U (en) * | 2011-01-19 | 2011-12-07 | 深圳市佰晟光电科技有限公司 | LED lighting fixture with light source control system |
| CN202561604U (en) * | 2012-05-28 | 2012-11-28 | 杭州汉徽光电科技有限公司 | Water-flow heat conduction type high-power light-emitting diode (LED) plant growth lighting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448866A (en) * | 2017-09-11 | 2017-12-08 | 浙江省金华市第特种灯泡厂 | A kind of LED lamp component and automobile |
| WO2021165875A1 (en) * | 2020-02-19 | 2021-08-26 | Pate Aline | Automated vertical plant cultivation system and methodology |
| RU209726U1 (en) * | 2021-11-11 | 2022-03-21 | Федеральное государственное бюджетное научное учреждение «Федеральный научный агроинженерный центр ВИМ» (ФГБНУ ФНАЦ ВИМ) | Liquid phytoirradiator for plants |
| RU2777658C1 (en) * | 2021-12-01 | 2022-08-08 | Федеральное государственное бюджетное научное учреждение "Федеральный научный агроинженерный центр ВИМ" (ФГБНУ ФНАЦ ВИМ) | Led liquid phyto-irradiator of circular irradiation for plants |
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Application publication date: 20121003 |