KR102425599B1 - Laser Module Cooling Device Using Fan Arrangement Position - Google Patents

Abstract

A laser system (1) of the present invention includes a laser module cooling device (1-2) provided with an external fan (20) that forms an internal air circulation flow through which air introduced into a cooling space (5-1) of an external case (5), in which a laser module (3) is accommodated, escapes from the cooling space (5-1); and a built-in fan (30) that forms an additional internal air circulation flow through which some of the air passes through a cooling structure (40) accommodated in the cooling space (5-1). Therefore, the laser module (3) is cooled by double-cooling including a cooling action utilizing a U-shaped cooling airflow generated by the internal air circulation flow in the cooling space (5-1) of the external case (5) and a cooling action utilizing a rising airflow generated by the additional internal air circulation flow, so the cooling efficiency is greatly improved.

Description

Laser Module Cooling Device Using Fan Arrangement Position

The present invention relates to a laser module cooling device, and in particular, a laser using a fan arrangement position in which a double cooling effect is generated by forming an additional internal air circulation flow together with an internal air circulation flow in a cooling space of an exterior case using a plurality of fans. It relates to a laser system with a module cooling device.

In general, a laser module generates laser light output to the outside by an external switch/button in a state protected by an external case, and is applied to a medical laser device or an exposure device.

In particular, a cooling system for cooling the heat generated during laser output is applied to the laser module, and an air cooling cooling system is applied as one of the cooling systems.

For example, the air-cooled cooling system uses a fan for suction/discharge, and the fan for suction/discharge combines external air with a laser module by suction and discharge power due to rotation or inside an external case The cooling effect for the laser module is realized by sucking in the entire air flow rate and then discharging it.

In particular, the fan consists of a plurality of fans all arranged in the same direction for air intake or exhaust.

Furthermore, the air-cooled cooling system perforates an air groove in the outer case, and the air groove secures an air flow rate, so that air can be smoothly sucked or discharged from the inside of the device cover.

Domestic Patent Publication KR 10-2007-0096240 A

However, the fan-type air-cooled cooling system has the following disadvantages.

First, air is blown into the cooling heat sink through the fan, and secondly, since the plurality of fans all form an array in the same direction, the air flow direction to the inlet and outlet inside the outer case is not considered, and thirdly, the outer case An air groove to secure the air flow rate should be perforated in the device cover so that air intake/exhaust is made smoothly from the inside.

As such, in the fan-type air-cooled cooling system, although structural changes such as air groove perforation are made, the efficiency of the air circulation flow for the internal space of the external case, which determines the cooling efficiency of the laser module, is inevitably low.

Therefore, in consideration of the above points, the present invention generates a cooling effect with an internal air circulation flow in which external air introduced into the interior through the suction fan from the side of the exterior case exits through the discharge fan, and in particular, the internal air circulation flow The cooling wind formed in the front/rear direction of the laser module is formed in a U-shape in opposite directions, and the additional internal air circulation flow that forms an upward airflow over the laser module by sucking the internal air from the cooling space of the external case with a heat dissipation fan is further increased. An object of the present invention is to provide a laser module cooling device using a fan arrangement position in which the system cooling efficiency is greatly improved due to the double cooling effect on the laser module and a laser system having the same.

The laser module cooling apparatus of the present invention for achieving the above object includes an external case having a cooling space in which the laser module is accommodated; an external fan for forming an internal air circulation flow in the cooling space so that the laser module is cooled while the air entering the cooling space is discharged outside; a cooling structure accommodated in the cooling space and positioned above the laser module; and a built-in fan for forming an additional internal air circulation flow in which some of the air introduced into the cooling structure is discharged to the cooling space.

In a preferred embodiment, the outer case divides the cooling space into a left flow space and a right flow space, and the cooling structure is located in the right flow space.

In a preferred embodiment, the right flow space forms a suction flow rate securing interval, and the suction flow rate securing interval expands an air flow space between the outer case and the cooling structure.

In a preferred embodiment, the external fan is composed of a first external fan and a second external fan mounted on the external case from the rear of the laser module, and the first external fan sends the air to the cooling space. The second external fan draws the air out of the cooling space.

In a preferred embodiment, the first external fan and the second external fan are rotated in opposite directions in an adjacent arrangement state adjacent to each other, and the adjacent arrangement state forms the internal air circulation flow in a U-shape in opposite directions to each other. give.

In a preferred embodiment, the second external fan is at a higher position than the first external fan, thereby forming a fan height difference.

As a preferred embodiment, the built-in fan is mounted on the upper part of the cooling structure to form a vertical arrangement with respect to the laser module, and the vertical arrangement state forms the internal air additional circulation flow in the upward direction of the laser module. give.

In a preferred embodiment, the built-in fan includes a first built-in fan and a second built-in fan, and the first built-in fan and the second built-in fan are adjacent to each other and rotate in the same direction.

As a preferred embodiment, the cooling structure includes an additional circulation box that introduces some air to the side and discharges it to the upper surface, a heat sink attached to the side of the additional circulation box and formed as an air inlet, and a predetermined height from the bottom surface of the cooling space It is composed of a pedestal for positioning the additional circulation box.

As a preferred embodiment, the additional circulation box is composed of a first additional circulation box and a second additional circulation box that form an adjacent arrangement state adjacent to each other, each of the first additional circulation box and the second additional circulation box is the A heat sink is attached to form the air inlet.

In a preferred embodiment, the heat sink has an air vent grill structure.

In a preferred embodiment, in the case, a partition wall is provided in the cooling space, and the partition wall separates a flow of air entering the cooling space and a flow exiting the cooling space.

In a preferred embodiment, the separation wall forms a separation space between a left flow space and a right flow space of the cooling space at the external fan side.

In a preferred embodiment, the separation space projects towards the cooling structure.

And the laser system of the present invention for achieving the above object is an external case forming a cooling space; a laser module accommodated in the cooling space; and an external fan for forming an internal air circulation flow through which the air introduced into the cooling space exits the cooling space, and a built-in internal air additional circulation flow through which some of the air passes to the cooling structure accommodated in the cooling space. A laser module cooling device with a fan is included.

In a preferred embodiment, the laser module cooling device includes a thermoelectric element, and the thermoelectric element) is wrapped with urethane foam while attached to the laser module.

In a preferred embodiment, the thermoelectric element is located between the laser module and the cooling structure.

The laser module cooling device applied to the laser system of the present invention implements the following actions and effects.

First, the cooling performance of the laser module can be effectively secured by combining a plurality of fans to form an external air circulation flow to the outer case internal space with external air and at the same time add an internal air circulation flow from the external case internal space. Second, since the internal air circulation flow formed by some of the plurality of fans passes from the internal space of the outer case to the heat sink of the cooling structure adjacent to the laser module, the cooling efficiency for the laser module is greatly improved. Third, since the internal air circulation flow is formed through the fan of the cooling structure in the cooling space of the outer case, the air flow rate for enhancing the cooling effect can be sufficiently secured without a separate air hole. Fourth, the discharge fan that discharges the air inside the exterior case is adjacent to the intake fan that introduces the air and is located on one wall of the exterior case, so that the external air circulation flow flowing into the interior space of the exterior case and then exiting again improves the cooling performance. The height can be formed with a “U” type inflow/outflow flow. Fifth, it is easy to increase the heat dissipation effect for the laser module through the upper part of the laser module by bringing the thermoelectric element into surface contact with the laser module as the laser module is positioned below the cooling structure. And, since the urethane foam surrounding the thermoelectric element is applied as an insulating element, it is structurally easy.

1 is a configuration diagram of a laser system equipped with a laser module cooling device using a fan arrangement position according to the present invention, and FIGS. 2 and 3 are examples of a layout of a laser module cooling device using an external case according to the present invention, 4 is a U-shape in the opposite direction to the internal air circulation flow in the cooling space of the exterior case using the external fan of the laser module cooling device according to the present invention, and is cooled by the internal air circulation flow for the front/rear direction of the laser module. 5 is a state in which wind is formed, and FIG. 5 shows an upward airflow with an additional circulation flow of internal air for the up/down direction of the laser module in the cooling space of the external case using the built-in fan of the laser module cooling device according to the present invention. state, and FIG. 6 is an example in which a thermoelectric element and urethane foam are applied as auxiliary cooling members to the laser module cooling device according to the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying illustrative drawings, and since such an embodiment may be implemented in various different forms by those of ordinary skill in the art to which the present invention pertains, it will be described herein It is not limited to the embodiment.

Referring to FIG. 1 , a laser system 1 includes a laser generating device 1-1 and a laser module cooling device 1-2 .

Specifically, the laser generating device 1-1 includes a laser module 3 , an outer case 5 , a system operation unit 6 , a system operation unit 7 , and a rubber support 9 .

For example, the laser module 3 generates a laser, and is located below the laser module cooling device 1-1 in the cooling space 5-1 of the outer case 5 . The outer case 5 accommodates the laser module cooling device 1-1, the laser module 3, the system operation unit 6 and the system operation unit 7 in the cooling space 5-1, and the overall system appearance to form The support rubber 9 is exposed to the outside with a protrusion structure attached to the lower surface of the outer case 5 to stably support the state in which the laser system 1 is placed,

In particular, the outer case 5 forms an overall size with the system height H and the system width W, and serves as a place where the layout for the components of the laser module cooling device 1-1 is formed.

For example, the system operation unit 6 is built into the cooling space 5-1 of the external case 5 to occupy a part of the cooling space 5-1, and is linked to the laser module 3 to form a laser module (3) to control the operation. The system operation unit 7 includes a power switch, a laser window, internal/external electrical connectors, etc. for operating the laser module 3 and the system operation unit 6 , and is provided on the front surface of the outer case 5 .

Specifically, the laser module cooling device (1-2) consists of a fan unit (10) with an external fan (20) for forming the cooling wind and a built-in fan (30) for forming the upward airflow, and an external case (5) ) by connecting the built-in fan 30 to the cooling structure 40 built in the cooling space 5-1 of the , so that an upward airflow can be formed above the laser module 3 .

For example, the external fan 20 is located at the rear of the external case 5 and receives power from the system operation unit 7 to rotate in opposite directions. A first external fan 20A and a second external fan 20B. is composed of

For example, the built-in fan 30 is built in the cooling space 5-1 of the external case 5, receives power from the system operation unit 7, and rotates in the same direction as the first built-in fan 30A and the second fan. It is composed of 2 built-in fans 30B.

From this, the fan unit 10 moves to the arrangement position of the first and second external fans 20A and 20B and the arrangement position of the first and second internal fans 30A and 30B. It forms an upward airflow path of the additional circulation flow together, and the internal air circulation flow is combined with the internal air additional circulation flow and discharged to the outside of the exterior case 5, so that the laser in the cooling space 5-1 of the exterior case 5 It is possible to double the cooling effect of the module 3 .

For example, the cooling structure 40 is composed of an additional circulation box 50 , a heat sink 51 and a pedestal 60 . In this case, the additional circulation box 50 is attached to the upper surface of the built-in fan 30 so that the suction action to the internal space is made. The heat sink 51 is attached to the left/right opening channels of the additional circulation box 50 and is formed as a suction port through which the internal air filled in the cooling space 5-1 of the outer case 5 enters. The pedestal 60 combines the additional circulation box 50 with an upper plate, and forms a space away from the bottom surface of the cooling space 5-1 of the exterior case 5 with a desk leg to form a laser module (3) to form the lower space of

Meanwhile, FIGS. 2 and 3 show that the laser module cooling device 1-2 uses the external case 5 to show the first and second external fans 20A and 20B and the first and second internal fans 30A and 30B. An example of setting the layout is shown.

As shown, the exterior case 5 has a hexahedral shape having front and rear/left/right/top and bottom surfaces in which an inner space is formed as a cooling space 5-1. In this case, the front and rear surfaces are formed of a front cover surface 5A and a rear cover surface 5B, and the left and right surfaces are formed of a left extension surface 5C and a right extension surface 5D.

Therefore, the first and second external fans 20A and 20B are arranged adjacent to each other by attaching the external fan 20 to the rear cover surface 5B, while the front cover surface 5A positions the system operation unit 7 . do. In addition, the left/right extension surfaces 5C and 5D extend the cooling space 5-1 of the gently curved exterior case 5 whose central section convexly protrudes outward, thereby circulating the internal air. while simultaneously smoothing the internal air flow that the first and second built-in fans 30A and 30B of the built-in fan 30 suck into the first and second additional circulation boxes 50A, 50B of the additional circulation box 50 to be able to form

From this, the outer case 5 sets the case height (H), the case width (W), the left flow space (Wa), the right flow space (Wb), and the case expansion width (W-1) as shape design factors, , the fan height difference (a), the suction flow rate flow interval (b), the discharge flow rate flow interval (c), and the suction flow rate securing interval (d) are set from the shape design factor.

In particular, the left flow space Wa and the right flow space Wb equally divide the cooling space 5-1 in half or divide the left flow space Wa into about 10 more than the right flow space Wb. % larger can be formed. And the fan height difference (a) may be formed to be about 10 ~ 20mm, the suction flow rate flow interval (b) may be formed to be about 20 ~ 30% larger than the discharge flow rate flow interval (c), the The suction flow securing interval (d) is divided into the left suction flow securing interval and the right suction flow securing interval. have.

Specifically, the layout of the external case 5 forms a fan height difference a with respect to the first and second external fans 20A and 20B of the external fan 20, and with respect to the first external fan 20A While forming the intake flow rate flow interval (b) to form an outlet flow rate flow interval (c) with respect to the second external fan (20B), for the first and second internal fans (30A, 30B) of the internal fan (30) A suction flow rate securing interval (d) is formed.

Referring to FIG. 2 , the fan height difference (a) is the first external fan 20A and the second external fan 20B of the external fan 20 mounted on the rear cover surface 5B of the external case 5 . applies to From this, the fan height difference (a) means that the external air path through which the external air sucked into the first external fan 20A enters the cooling space 5-1 of the external case 5 is directed to the second external fan 20B. It is sucked so that it can be positioned above the internal air path exiting from the cooling space 5-1 of the outer case 5.

In addition, the suction flow flow interval (b) is the upper left space formed by the height of the system operation unit 6 placed in the cooling space 5-1 of the outer case 5 and the upper ceiling surface of the outer case 5 And, the discharge flow flow interval (c) is the height of the cooling structure 40 and the built-in fan 30 placed in the cooling space 5-1 of the outer case 5 is the upper ceiling surface of the outer case 5 and This is the space in the upper right corner that was formed.

On the other hand, referring to FIG. 3 , the suction flow rate securing interval d is a left suction that expands the side space of the system operation unit 6 placed in the left cooling space among the cooling spaces 5-1 of the outer case 5 . It is divided into a flow rate securing interval, a right suction flow rate securing interval that expands the side space of the first and second additional circulation boxes (50A, 50B) of the additional circulation box 50 placed in the right cooling space. The outer case may include a curved or streamlined inner surface for the additional circulation box with the suction flow rate secured therebetween.

In particular, referring to FIG. 3 , the cooling space 5-1 of the outer case 5 may be provided with a separation wall 100 ,

For example, the separation wall 100 divides the cooling space 5-1 into a space Wa of the system operation unit 6 and a space Wb of the cooling structure 40, and the cooling space 5-1 ) through the space opening (Wa, Wb) of the external air sucked into the first external fan (20A), the air flow into the cooling space (5-1) and the internal air sucked into the second external fan (20B) is cooled It is possible to separate the air flow exiting the space (5-1).

To this end, the length of the dividing wall 100 is a second additional circulation box ( 50B) or the length or spacing of the spacing formed by the second built-in fan 30B of the built-in fan 30 ?? It can be made out of length.

However, the separation wall 100 is the first external fan 20A and the first and second internal fans 30A and 30B of the internal fan 30 to improve the performance of the second external fan 20B among the external fans 20 . It may not be applied through a design that is higher than that. For this reason, the rotation speed of the second external fan 20B is faster within about 20% compared to the first external fan 20A and the first and second internal fans 30A and 30B, and through this, the second external fan It is because the suction force of 20B can form the vacuum degree with respect to the cooling space 5-1 of the exterior case 5 more strongly.

Meanwhile, FIGS. 4 and 5 illustrate an internal air circulation flow and an additional internal air circulation flow formed in the cooling space 5-1 of the outer case 5 through the laser module cooling device 1-2.

Referring to the internal air circulation flow of FIG. 4 , the first external fan 20A sucks air from the outside and sends it from the rear to the front of the external case 5 to fill the cooling space 5-1 with internal air. do it On the other hand, the second external fan 20B sucks the internal air from the cooling space 5-1 in the opposite action to the first external fan 20A and sends it from the front to the rear of the external case 5, so that the external case ( 5) is discharged to the outside.

In particular, as shown in FIGS. 2 and 3 , the external air intake action of the first external fan 20A and the internal air intake action of the second external fan 20B are performed in the cooling space 5-1 of the external case 5 . to form an internal air circulation flow, and the internal air circulation flow passes the air inlet path of the first external fan 20A and the air exhaust path of the second external fan 20B into the U-shaped cooling wind in opposite directions to the exterior case As it exits (5), it creates a cooling effect on the laser module (3).

In addition, the fan height difference (a) of the first and second external fans 20A and 20B makes the internal air circulation flow of external air inflow and internal air exhaust into a “U” type cooling wind, and the first and second external fans 20A and 20B The fans 20A and 20B allow the internal air to be discharged more smoothly from the cooling space 5-1 of the outer case 5 under the opposite action of suction and discharge.

And, as shown in FIG. 3, the flow separation effect of the separation wall 100 more clearly forms a U-shape forming in opposite directions to the cooling wind of the internal air circulation flow formed in the cooling space 5-1. By doing so, it is possible to greatly improve the cooling effect of the internal air while exiting the outer case 5 .

On the other hand, referring to the internal air additional circulation flow of FIG. 5 , each of the first and second internal fans 30A and 30B is an internal air circulation flow from the lower part to the upper part of the cooling space 5-1 of the outer case 5 . An additional internal air circulation flow is formed by sucking in some of the air of By forming an ascending airflow, a cooling effect on the laser module 3 is generated once more.

And the additional circulation box 50 is a first additional circulation box (50A) and the second built-in fan (30B) coupled to the upper surface of the first built-in fan (30A) is coupled to the upper surface of the second additional circulation box (50B) A heat sink 51 is attached to the left and right sides of each of the first and second additional circulation boxes 50A and 50B. In this case, the heat sink 51 is attached to the left and right opening channels perforated in each of the first and second additional circulation boxes 50A and 50B by applying the automobile air vent grill structure to the first and second built-in fans ( 30A, 30B) acts as an air intake into the interior of the first and second additional circulation boxes (50A, 50B) formed by the rotation.

In particular, as shown in FIGS. 2 and 3 , the difference (b-c) between the flow rates between the first external fan 20A and the second external fan 20B is the cooling of the external case 5 from the first external fan 20A side. Without stagnating the external air entering the space 5-1, and furthermore, when the built-in fan 30 is driven, the air flow rate is smoothly sent toward the heat sink 51 of the additional circulation box 50, thereby reducing the internal air additional circulation flow. contribute to the formation

In addition, the suction flow rate securing interval (d) extends the left flow space (Wa) of the cooling space (5-1) of the exterior case (5) to the left suction flow rate securing interval to form an internal air circulation flow more smoothly, , by extending the right flow space (Wb) to the interval to ensure the right suction flow rate, some of the internal air is transferred to the heat sink ( 51), so that it can enter smoothly.

In this way, the laser module cooling device 1-1 comprises the fan unit 10 with a plurality of fans, and the external fan 20 of the fan unit 10 cools the external air of the external case 5 . The internal fan 30 flows into the space 5-1 and exits the outer case 5 with the U-shaped cooling wind in the opposite direction from the inside. By forming an additional internal air circulation flow that forms an upward airflow upward of the laser module 3 in the air circulation flow, a double cooling effect is generated for the laser module 3 .

Therefore, the laser system 1 is characterized as a laser module cooling system using the fan arrangement position by the laser module cooling device 1-2.

Meanwhile, referring to FIG. 6 , it is exemplified that the cooling auxiliary member 70 is included in the cooling structure 40 of the laser module cooling device 1-2 .

For example, the cooling auxiliary member 70 is formed of a thermoelectric element 80 positioned between the laser module 3 and the cooling structure 40, and a rectangular rim shape. It is composed of a urethane foam 90 as a kind.

Therefore, the cooling auxiliary member 70 is integrated with the laser module 3 at the lower side of the cooling structure 40 , and the thermoelectric element 80 is in surface contact with the laser module 3 at the upper side of the laser module 3 . The heat generated by the laser module 3 is dissipated.

As such, in the laser system 1, the laser module 3 is positioned below the cooling structure 40 so that the thermoelectric element 80 is in surface contact with the laser module 3, and the laser module 3 through the upper part of the laser module. It is easy to increase the heat dissipation effect of the urethane foam 90 surrounding the thermoelectric element 80 can be applied as a heat insulating element.

As described above, in the laser system 1 according to the present embodiment, the air introduced into the cooling space 5-1 of the outer case 5 in which the laser module 3 is accommodated is discharged from the cooling space 5-1. An external fan 20 that forms an outgoing internal air circulation flow, and a built-in fan 30 that forms an additional internal air circulation flow through which some of the air passes to the cooling structure 40 accommodated in the cooling space 5-1 By including the provided laser module cooling device (1-2), with the cooling action of the laser module (3) using the U-shaped cooling wind flow by the internal air circulation flow in the outer case (5) cooling space (5-1) The cooling efficiency is greatly improved by the double cooling effect by adding the cooling action of the laser module 3 using the rising air flow by the additional circulation flow of the internal air.

1: laser system 1-1: laser generating device
1-2: laser module cooling device
3: Laser module
5: outer case 5-1: cooling space
5A: Front cover surface 5B: Rear cover surface
5C: Left extended side 5D: Right extended side
6: system operation unit 7: system operation unit
9: support rubber
10: fan unit
20: external fans 20A, 20B: first and second external fans
30: built-in fans 30A, 30B: first and second built-in fans
40: cooling structure
50: additional circulation boxes 50A, 50B: first and second additional circulation boxes
51: heat sink 60: pedestal
70: cooling auxiliary member
80: thermoelectric element 90: urethane foam
100: separation wall

Claims (10)

The outer case (5) forming a cooling space in which the laser module is accommodated;
a separation wall (100) provided in the cooling space of the outer case and separating a flow of air entering the cooling space and a flow exiting the cooling space;
an external fan 20 that forms an internal air circulation flow in the cooling space so that the laser module is cooled while the air entering the cooling space is discharged outside;
a cooling structure (40) accommodated in the cooling space and positioned above the laser module;
the cooling structure
An additional circulation box 50 that introduces air to the side and discharges it to the upper surface,
A heat sink 51 attached to the side of the additional circulation box and formed as an air inlet, and
Built-in fans 30A and 30B are included to form an additional circulation flow of internal air in which the air introduced into the cooling structure is discharged to the cooling space,
The external fan is mounted on the external case from the rear of the laser module, and a first external fan 20A for sending air from the outside to the cooling space;
It is a second external fan (20B) that draws out air from the cooling space to the outside,
The second external fan 20B is at a higher position than the first external fan 20A, and the additional circulation box 50 is positioned at a predetermined height by the pedestal 60 from the bottom of the cooling space,
The built-in fan is mounted on the upper part of the cooling structure to form a vertical arrangement with respect to the laser module,
The vertical arrangement state forms the internal air additional circulation flow in the upward direction of the laser module,
The air sent to the cooling space through the first external fan (20A), characterized in that it takes out the air through the second external fan (20B) higher than the first external fan (20B) characterized in that
Laser module cooling device.
The method according to claim 1,
The exterior case divides the cooling space into a left flow space and a right flow space,
Laser module cooling device, characterized in that the cooling structure is located in the right flow space.
3. The method according to claim 2,
The right flow space forms a suction flow rate securing interval,
The suction flow rate securing interval is a laser module cooling device, characterized in that it expands the air flow space between the outer case and the cooling structure.
delete delete delete delete delete The method according to claim 1,
The laser module is provided with a thermoelectric element,
The laser module cooling device, characterized in that the side of the thermoelectric element is heat-blocked by the heat insulating element.
4. The method of claim 3,
The side surface of the outer case spaced apart from the cooling structure by the interval to ensure the suction flow rate is a laser module cooling device, characterized in that it is formed to include a curved surface for the additional circulation flow.

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