KR20210074437A - Radiating pipe with led cooling system - Google Patents

Abstract

The present invention relates to a heat radiating pipe with an LED cooling device and a manufacturing method thereof. The heat radiating pipe with an LED cooling device comprises: a heat radiating pipe formed as a double pipe and configured to be divided into an inner pipe and an outer pipe; a donut-shaped fluid passage which forms the outer pipe of the heat radiating pipe; a steam chamber housing coupled to an upper end of an LED heating element, provided with a working fluid in an internal loading space thereof, and configured to cool the LED heating element; a wick having a movement passage formed in the internal loading space of the steam chamber housing and configured to form left and right movement of the working fluid; an upper cap formed in a donut shape and configured to seal an upper end of the heat radiating pipe; a lower cap formed on a lower end of the heat radiating pipe and configured to seal an end corresponding to the inner pipe and open an end corresponding to the outer pipe; and a seating groove formed in an outer surface of the steam chamber housing and configured to seal the end corresponding to the inner pipe of the heat radiating pipe and open the end corresponding to the outer pipe of the heat radiating pipe. The working fluid is circulated in a way that the steam chamber housing attached to an upper end surface of the LED heating element increases a temperature of the working fluid provided in the wick so that the working fluid is evaporated, moved by steam, formed by evaporation, and a natural convection phenomenon, caused by an internal pressure difference, and then cooled by a heat radiating fin attached to the outer pipe of the heat radiating pipe such that the working fluid is returned to the wick by gravity. Accordingly, heat radiating effect of the heat radiating pipe can be enhanced.

Description

Heat radiation pipe with LED cooling device {RADIATING PIPE WITH LED COOLING SYSTEM}

The present invention relates to a heat dissipation pipe equipped with a device for cooling an LED, and more particularly, a heat dissipation pipe formed as a double pipe and divided into an inner tube and an outer tube, and a vapor chamber housing connected to each other. It relates to a heat dissipation pipe equipped with a device for cooling an LED, which exhibits an effect of natural convection cooling an overheated LED, such as an increase in durability of the LED.

LED incandescent lamps have the superior advantage of high-power, semi-permanent lifespan compared to many light sources, whereas when driving LEDs, most of the generated energy is lost as heat, and the generated heat adversely affects the semi-permanent lifespan characteristics of LEDs, so the LED function is lost. will do

Currently, various technologies for LED heat dissipation are being developed to overcome these problems, and the development of an eco-friendly convection system for LED heat dissipation is important in order to solve the problems of characteristic changes such as deterioration of heat dissipation efficiency and lifespan of LED devices. It is a task.

Convection is the heat transfer between a flowing fluid and an object's boundary surfaces at different temperatures. The convection heat transfer is classified according to the nature of the fluid flow. Forced convection is defined as the movement of the flow by an external means such as a fan, a pump, or atmospheric wind. On the other hand, in the case of a heat sink of an LED lighting fixture, there is no external means for forcibly inducing flow in the fluid by defining the flow by buoyancy generated from the density difference due to temperature change in the fluid as natural convection. Therefore, it can be classified as natural convection.

Accordingly, for the development of the heat dissipation pipe of the eco-friendly LED lamp accompanied by the natural convection, the vapor chamber housing and the heat dissipation pipe are designed and constructed, and the metal material forming the vapor chamber housing, and the internal loading space. There has been a need for the invention of a filling working fluid.

Therefore, as a method of developing a heat dissipation pipe for an eco-friendly LED lamp, the invention of increasing the heat transfer effect between the heat dissipation pipe and the surrounding air by increasing the area of the heat dissipation pipe attached to the LED device in order to effectively dissipate the heat generated from the LED device is accompanied Should be, prior art. As a method of increasing the convective heat transfer coefficient to the maximum possible value, there has been a need for a method of increasing the heat transfer effect by increasing the surface area of the heat sink attached to the LED element. There is an arc (name: heatpipe with triangular grooved wick).

However, this conventional technique has disadvantages such as insufficient vaporization of the working fluid and the absence of a natural convection phenomenon according to the structural area of the heat pipe.

Republic of Korea Patent No. 10-1684837

The present invention has been devised in view of the above problems, and a first object of the present invention is to provide a heat dissipation effect of a heat dissipation tape formed in a double pipe shape by being divided into an inner tube and an outer tube, respectively.

The present invention has been devised in view of the above problems, and a second object of the present invention is to provide a working fluid in the internal loading space where the vapor chamber housing and heat dissipation pipe attached to the upper end of the LED are connected to each other. As the temperature rises, the working fluid in the provided wick is evaporated, and the vapor moves into the heat dissipation pipe by the pressure difference inside and is cooled while cooling the overheated LED.

The present invention has been devised in view of the above problems, and a third object of the present invention is that the wick provided inside the steam chamber housing absorbs the working fluid and temporarily fixes the working fluid, Even if the vapor chamber housing does not maintain a horizontal state due to external pressure and forms an irregular inclination value, it provides an effect of allowing the working fluid to be easily moved by the internal wick of the vapor chamber housing.

The present invention has been devised in view of the above problems, and a fourth object of the present invention is to make a heat dissipation pipe equipped with a device for cooling an LED, which is a method of manufacturing a heat dissipation pipe equipped with a device for cooling an LED, durable It is intended to provide the effect of being manufactured.

According to the characteristics for achieving the above object, the first invention is a heat dissipation pipe formed as a double pipe and divided into an inner tube and an outer tube, respectively, and the interval between the outer tube and the inner tube of the heat dissipation pipe. A donut-shaped fluid movement passage is formed, and a working fluid is provided in an internal loading space coupled with the upper end of the LED heating element to cool the LED heating element, and a movement passage is provided in the internal loading space of the steam chamber housing. A wick formed to form left and right movement of the working fluid, an upper cap formed in a donut shape to seal the upper end of the heat dissipation pipe, and formed at the lower end of the heat dissipation pipe to seal the end corresponding to the inner tube and to the outside The end corresponding to the tube has an open lower cap, a seating groove formed on the outer surface of the steam chamber housing in which the lower end of the heat dissipation pipe provided with the lower cap is seated, and a plurality of stacks on the outer tube of the heat dissipation pipe and a heat radiation fin attached to the heat radiation pipe.

According to the features for achieving the object as described above, the second invention includes the steps of providing a vapor chamber housing corresponding to the upper surface of the LED heating element, and a movement path provided on the inner bottom surface of the vapor chamber housing. Forming a wick, providing a heat dissipation pipe in the form of a double pipe divided into an inner tube and an outer tube, combining the lower end of the heat dissipation pipe so that the lower end and the lower cap correspond to each other; The steps of respectively coupling the lower end of the provided heat dissipation pipe and a seating groove formed in the upper surface of the steam chamber housing, stacking a plurality of heat dissipation fins on the outer tube of the heat dissipation pipe, and loading the inside of the steam chamber housing It is characterized in that it comprises the steps of providing a working fluid in the space, and coupling the upper cap to the upper end of the heat dissipation pipe to form the inside of the heat dissipation pipe in a vacuum state and seal the inside.

According to the heat dissipation pipe equipped with the device for cooling the LED of the present invention, the heat generated by the LED is divided into an inner tube and an outer tube and is operated by a heat dissipation fin attached to the outer tube of the heat dissipation pipe formed in the shape of a double tube. By condensing the fluid, there is an effect of increasing the heat dissipation effect of the heat dissipation pipe.

In addition, in the internal loading space where the wick attached to the top of the LED, the vapor chamber housing, and the heat dissipation pipe are connected to each other, the temperature of the LED rises and evaporation of the working fluid provided in the wick occurs, and the pressure inside the heat dissipation pipe The natural convection phenomenon generated by the car has the effect of cooling the overheated LED.

In addition, the wick provided inside the steam chamber housing absorbs the working fluid and temporarily fixes the working fluid, and the steam chamber housing fails to maintain a horizontal state due to external pressure and forms an irregular inclination value. Even so, there is an effect that the working fluid provided therein is not changed and is evenly distributed by the capillary force of the inner wick of the steam chamber housing.

1 is a front cross-sectional view of a heat dissipation pipe equipped with a device for cooling an LED according to the present invention.
2 is a perspective view of a heat dissipation pipe provided with a device for cooling an LED according to the present invention.
Figure 3 is an enlarged view of a part of a heat dissipation pipe provided with a device for cooling the original LED according to the present invention.
4 is a block diagram showing a manufacturing step of a method for manufacturing a heat dissipation pipe equipped with a device for cooling an LED according to the present invention.
5 is an embodiment of a heat dissipation pipe equipped with a device for cooling an LED according to the present invention.

Objects, configurations, effects, and various configurations of the present invention described in this specification are intended to form a smooth understanding through the detailed content for carrying out the invention related to the accompanying drawings.

In addition, the specific content for carrying out the present invention aims to specify and microscopically define the scope of rights according to the applicant's invention, so that the idea of the present invention is sufficiently conveyed to those skilled in the art. It is explained in order to

In addition, the specification to be described is an invention that can be used industrially and cannot be invented by those of ordinary skill in the art, and the reader with knowledge in the relevant field can understand the purpose of the invention without specific content for carrying out the invention, It was written taking into consideration that the composition and effect can be recognized.

In addition, it should be noted in advance that the content that is commonly known in describing the invention and that is recognized as the content according to the commonly used technology that is not significantly related to the invention is not described in order to avoid confusion in describing the present invention. .

1 is a front sectional view of a heat dissipation pipe equipped with a device for cooling an LED according to the present invention, FIG. 2 is a perspective view of a heat dissipation pipe equipped with a device for cooling an LED according to the present invention, and FIG. It is an enlarged view of a part of a heat dissipation pipe provided with a device for cooling the original LED, and FIG. 4 is a block diagram showing the manufacturing steps of a method for manufacturing a heat dissipation pipe equipped with a device for cooling an LED according to the present invention, FIG. 5 is an embodiment of a heat dissipation pipe equipped with a device for cooling an LED according to the present invention, and FIG. 1 is a front sectional view of a heat dissipation pipe equipped with a device for cooling an LED according to the present invention.

In this way, the LED used in the heat dissipation pipe equipped with the device for cooling the LED of the present invention is different from the existing incandescent lamp in terms of performance, effect, lifespan, etc. Each gives different results. In particular, this invention is intended to solve the problem that, when the temperature of the LED is 150° C. or higher, the durability is greatly reduced and a negative result is displayed in the amount of light emitted at the current point in which a high specification is gradually required.

Accordingly, as an invention for improving the durability of the LED, a heat dissipation pipe equipped with a device for cooling the LED including the vapor chamber housing 12 and the heat dissipation pipe 10 coupled to the LED was invented.

According to the method of operating a heat dissipation pipe equipped with a device for cooling an LED of the present invention, when the LED is heated, the temperature of the working fluid in the wick 13 provided in the vapor chamber housing 12 in contact with the upper surface of the LED is The LED of the present invention is a method of liquefying the vapor of the working fluid by moving the vapor of the working fluid to the internal loading space of the heat dissipation pipe 10 by rising, evaporating, and natural convection caused by the internal pressure difference in the heat dissipation pipe 10. A heat dissipation pipe equipped with a cooling device is operated.

Figure 2 is a perspective view of a heat dissipation pipe provided with a device for cooling the LED. In this way, the vapor chamber housing 12, the seating groove 16, the wick 13, the heat dissipation pipe 10, the fluid passage 11 provided therewith, the upper cap 14, and the lower cap (15) and a heat dissipation fin (17).

The heat dissipation pipe 10 is a component that forms the outer shape of a heat dissipation pipe equipped with a device for cooling the LED according to the present invention, is formed in a double pipe shape with an internal loading space, and is divided into an outer tube and an inner tube. and a fluid passage 11 forming an outer tube of the heat dissipation pipe 10 is provided.

In addition, since the purpose is to discharge the heat formed by the high-temperature and high-pressure gas convecting the internal loading space of the heat dissipation pipe 10 to the outside as much as possible, AI, EDPM, EP, which are resin compositions having oxidation and heat dissipation effects, A thermally conductive alloy formed by mixing a composition formed of PED and Zr02 and a composition formed of thermally conductive polymers PEDT, Baytron M, Bayer AG, and Bayer SA in a certain weight part, respectively, increases the heat dissipation effect of the heat dissipation pipe (10) do.

5 is an embodiment of a heat dissipation pipe equipped with a device for cooling an LED according to the present invention. As described above, the vapor chamber housing 12 is attached to the upper surface of the LED, and is a component that forms the outer shape of the heat dissipation pipe provided with the device for cooling the LED according to the present invention, and the internal loading space is formed in a sealed form. , The end corresponding to the inner tube of the heat dissipation pipe 10 is sealed, and the end corresponding to the outer tube is provided with a seating groove 16 having an open through hole, respectively, of the steam chamber housing 12 . formed on the top surface.

The seating groove 16 has a radial support formed long in the outward direction from the center of the circle to partially close the circular rim-shaped hole formed by the seating groove 16 so that the seating groove 16 is the above. It is formed more stably with the outer surface of the steam chamber housing 12 .

For the LED that generates heat, a vapor chamber housing 12 is attached to the upper surface, and a wick 13 provided with a moving passage is attached to the bottom surface forming the internal loading space of the vapor chamber housing 12. The wick 13 moves the working fluid to the fluid passage 11 due to the difference in internal pressure of the high-temperature and high-pressure gas formed by vaporizing the provided working fluid.

The high-temperature and high-pressure gas flowing into the fluid passage 11 is in contact with the outer wall formed of a thermally conductive alloy and loses heat, and the high-temperature and high-pressure gas from which the heat is taken is liquefied and the working fluid in the form of water droplets on the outer wall , and the liquefaction temperature is determined by the heat input of the evaporator and the capacity of the condenser. The liquefied working fluid descends vertically along the outer wall of the fluid passageway 11 and is re-introduced into the vapor chamber housing 12 through a natural convection phenomenon circulated.

In addition, the wick 13, which exhibits the effect of moving the working fluid, is provided with a working fluid in a moving passage in the form of a fine mesh and circulates the working fluid by capillary action and vapor pressure difference, so that additional power is not required. Therefore, it is environmentally friendly, and the moving speed of the working fluid is determined according to the size of the material and mesh of the component.

In addition, since the wick 13 is provided with a moving passage in the form of a fine mesh having a porosity of 50% or more, the filtration loss pressure is minimized.

3 is an enlarged enlarged view of a portion of a heat dissipation pipe provided with a device for cooling an LED according to the present invention.

Accordingly, the wick 13 absorbs the working fluid and temporarily fixes the working fluid inside the wick 13, and the vapor chamber housing 12 maintains a horizontal state by external pressure. Even if it is not maintained and an irregular inclination value is formed, the working fluid provided therein is not separated and is evenly distributed on the inner surface of the wick 13 .

In addition, the working fluid provided in the internal loading space of the vapor chamber housing 12 and provided in the moving passage of the wick 13 is less dangerous than ammonia, easy to handle, and has a low condensation point methanol, methanol, water , acetone is provided, and since the saturation pressure of methanol is relatively low, it has the advantage of showing stable results. In addition, the working fluid is injected so as to be provided in the liquid state in the wick 13 and in the vapor state in the vapor chamber housing 12 so as to be proportional to the thickness of the wick 13 .

4 is a block diagram showing a manufacturing step of a method for manufacturing a heat dissipation pipe equipped with a device for cooling an LED according to the present invention. In this way, the structure of the heat dissipation pipe 10 will be described below based on the process of manufacturing the heat dissipation pipe equipped with a device for cooling the LED.

The vapor chamber housing 12 having an internal loading space is provided so that the upper surface of the LED heating element is opened to correspond to each other, and then the corresponding ends are welded with a laser to achieve convection and liquid working fluid inside the evaporator. to maintain confidentiality between them. The vapor chamber housing 12 includes a composition formed of AI, EDPM, EP, PED, and Zr02, which is a thermally conductive resin composition, and a composition formed of, PEDT, Baytron M, Bayer AG, and Bayer SA, which are thermally conductive polymers, respectively, in certain parts by weight. After mixing, it is poured into a hexahedral formwork and aged to complete.

In this way, the step (S100) of providing the vapor chamber housing 12 corresponding to the upper surface of the LED heating element, which forms the effect of allowing the heat of the LED heating element to be moved faster is performed.

Then, the step (S101) of forming a wick 13 having a moving passage on the inner bottom surface of the vapor chamber housing 12 is sequentially performed, so that the wick 13 absorbs the working fluid and the vapor chamber housing Even in a situation where the (12) is not provided in a flat position, the working fluid provided in the steam chamber housing (12) does not escape to the outside.

Then, by executing the step (S102) of providing a heat dissipation pipe 10 in the form of a double pipe divided into an inner tube and an outer tube, respectively, the fluid passage 11 forming the inner tube of the heat dissipation pipe 10 is It is formed on a smooth surface so that it does not interfere with the vertical drop of the working fluid liquefied on the inner wall.

Then, by executing the step (S103) of coupling the lower end of the heat dissipation pipe 10 and the lower cap 15 to correspond to each other, the outer surface of the heat dissipation pipe 10 and the outer surface of the lower cap 15 are aligned, respectively Sliding connection with tolerance.

Then, by executing the step (S104) of coupling the lower end of the heat dissipation pipe 10 provided with the lower cap 15 and the seating groove 16 formed on the upper surface of the vapor chamber housing 12, respectively , so that the outer surface of the lower cap 15 and the outer surface of the seating groove 16 are each slidably coupled with a fitting tolerance.

Accordingly, the circular rim-shaped hole formed in the lower cap 15 and the seating groove 16, respectively, is formed with a support in a radial shape from the center of the circle to partially close the circular rim-shaped hole, and The end corresponding to the inner tube of the heat dissipation pipe 10 is stably fixed.

Then, by performing the step (S105) of stacking a plurality of heat dissipation fins 17 on the outer tube of the heat dissipation pipe 10, a plurality of through holes formed on the outer surface of the heat dissipation fin 17 and the heat dissipation pipe ( 10) is to be combined with each fit tolerance.

Then, by coupling the upper cap 14 to the upper end of the heat dissipation pipe 10 to form the inside of the heat dissipation pipe 10 in a vacuum state and provide a working fluid (S106) and the internal sealing step (S107) By executing, the inner surface of the upper cap 14 and the outer surface of the heat dissipation pipe 10 are coupled to each other with a fitting tolerance.

In this way, the process of manufacturing the heat dissipation pipe provided with the device for cooling the LED is sequentially executed to complete the heat dissipation pipe provided with the device for cooling the LED.

The specific contents and the configuration shown in the drawings for carrying out the invention described in this specification are only an embodiment of the present invention and do not include all the configurations, effects, and objects of the present invention, so it can be substituted for the present invention. It should be understood that there may be various variations of the examples.

10: heat dissipation pipe
11: fluid passageway 14: upper cap 15: lower cap
12: steam chamber housing
13: wick 16: seating groove 17: heat dissipation fin

Claims (2)

a heat dissipation pipe 10 formed as a double pipe and divided into an inner tube and an outer tube;
a donut-shaped fluid passage 11 formed in an interval between the outer tube and the inner tube of the heat dissipation pipe 10;
A vapor chamber housing 12 provided with a working fluid in the internal loading space coupled to the upper end of the LED heating element to cool the LED heating element;
a wick 13 having a moving passage formed in the internal loading space of the vapor chamber housing 12 to form left and right movement of the working fluid;
an upper cap 14 formed in a donut shape to seal the upper end of the heat dissipation pipe 10;
a lower cap (15) formed at the lower end of the heat dissipation pipe (10), sealing the end corresponding to the inner tube and opening the end corresponding to the outer tube;
a seating groove (16) formed on the outer surface of the vapor chamber housing (12), in which the lower end of the heat dissipation pipe (10) provided with the lower cap (15) is seated;
A heat dissipation pipe provided with a device for cooling an LED, characterized in that it comprises; a plurality of heat dissipation fins (17) laminated on the outer tube of the heat dissipation pipe and attached to the heat dissipation pipe (10). providing a vapor chamber housing 12 corresponding to the upper surface of the LED heating element (S100);
forming a wick 13 having a moving passage on the inner bottom surface of the vapor chamber housing 12 (S101);
providing a heat dissipation pipe 10 in the form of a double pipe divided into an inner tube and an outer tube, respectively (S102);
coupling the lower end of the heat dissipation pipe 10 and the lower cap 15 to correspond to each other (S103);
coupling the lower end of the heat dissipation pipe 10 provided with the lower cap 15 and the seating groove 16 formed on the upper surface of the vapor chamber housing 12, respectively (S104);
Laminating a plurality of heat dissipation fins 17 on the outer tube of the heat dissipation pipe (S105);
providing a working fluid in the internal loading space of the steam chamber housing 12 (S106);
By combining the upper cap 14 to the upper end of the heat dissipation pipe 10, the inside of the heat dissipation pipe 10 is formed in a vacuum state and the inside is sealed (S107); A method of manufacturing a heat dissipation pipe equipped with a cooling device.

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