Heat dissipation structure and laser

Abstract

The utility model provides a heat dissipation structure and a laser, and relates to the technical field of lasers, the heat dissipation structure provided by the utility model comprises a heat dissipation body, the heat dissipation body is internally provided with a flow channel, the flow channel comprises a liquid inlet flow channel, a heat exchange flow channel and a liquid outlet flow channel which are communicated in sequence, the outer end of the liquid inlet flow channel and the outer end of the liquid outlet flow channel are communicated with the outer wall of the heat dissipation body and form an inlet and an outlet of the flow channels respectively; the heat exchange flow channel extends along a straight line, and the head end and the tail end of the heat exchange flow channel directly communicate with the inner ends of the liquid inlet flow channel and the liquid outlet flow channel correspondingly.

Description

Technical Field

[0001] This utility model relates to the field of laser technology, and in particular to a heat dissipation structure and a laser. Background Technology

[0002] In lasers, the light-emitting device generates a large amount of heat during operation. The accumulation of heat can cause abnormal operation of the light-emitting device. Therefore, how to achieve rapid heat dissipation has become an important issue for the stable operation of the light-emitting device. Utility Model Content

[0003] The purpose of this invention is to provide a heat dissipation structure and a laser to alleviate the technical problem of high temperature of the light-emitting device in existing lasers.

[0004] In a first aspect, the present invention provides a heat dissipation structure, comprising: a heat dissipation body, wherein a flow channel is provided inside the heat dissipation body, the flow channel comprising a liquid inlet flow channel, a heat exchange flow channel and a liquid outlet flow channel connected in sequence, the outer ends of the liquid inlet flow channel and the outer ends of the liquid outlet flow channel are connected to the outer wall of the heat dissipation body, and respectively form the inlet and outlet of the flow channel;

[0005] The heat exchange channel extends in a straight line, with its first and last ends directly connected to the inner ends of the inlet and outlet channels, respectively.

[0006] Furthermore, the heat sink includes a base and a mounting base. The base has a first mounting surface, and the mounting base has a second mounting surface. After the base and the mounting base are connected, the first mounting surface and the second mounting surface are in contact.

[0007] Furthermore, the first and / or second assembly surfaces are provided with annular grooves surrounding the flow channel, the annular grooves being used to fill seals, solder, or adhesives.

[0008] Furthermore, a guide groove extending in a straight line is provided on the first assembly surface, and the inner ends of the liquid inlet channel and the liquid outlet channel are respectively connected to the opposite ends of the guide groove.

[0009] The guide channel and the second assembly surface define the heat exchange flow path.

[0010] Furthermore, a guide groove extending in a straight line is provided on the second assembly surface, and the inner end of the liquid inlet channel and the inner end of the liquid outlet channel are respectively connected to the opposite ends of the guide groove.

[0011] The guide channel and the first assembly surface define the heat exchange flow path.

[0012] Furthermore, both the inlet and outlet channels are located on the base.

[0013] Furthermore, the number of heat exchange channels is at least two, and each heat exchange channel is arranged in parallel.

[0014] Furthermore, the liquid inlet channel includes a first narrow section and a first wide section connected sequentially from the outside to the inside. The outer end of the first narrow section forms an inlet, and the first wide section is connected to one end of each heat exchange channel.

[0015] The liquid outlet channel includes a second narrow section and a second wide section connected sequentially from the outside to the inside. The outer end of the second narrow section forms an outlet, and the second wide section is connected to the other end of each heat exchange channel.

[0016] Furthermore, both the inlet and outlet channels extend along the first direction, while the heat exchange channel extends along the second direction, with the first and second directions being perpendicular.

[0017] Secondly, the present invention provides a laser, including a light-emitting device and the above-mentioned heat dissipation structure, wherein the number of the flow guide grooves is at least two;

[0018] The light-emitting device is disposed on one side of the second mounting surface on the back of the mounting base;

[0019] The projection of the light-emitting device on the second mounting surface overlaps with the largest area formed by all the flow guide grooves, or the projection of the light-emitting device on the second mounting surface is located within the largest area formed by all the flow guide grooves.

[0020] This utility model has at least the following advantages or beneficial effects:

[0021] The heat dissipation structure provided by this utility model includes: a heat sink, and a flow channel is provided inside the heat sink. The flow channel includes a liquid inlet flow channel, a heat exchange flow channel and a liquid outlet flow channel connected in sequence. The outer ends of the liquid inlet flow channel and the outer ends of the liquid outlet flow channel are connected to the outer wall of the heat sink and form the inlet and outlet of the flow channel, respectively. The heat exchange flow channel extends in a straight line, and its first and last ends are directly connected to the inner ends of the liquid inlet flow channel and the liquid outlet flow channel, respectively.

[0022] The coolant flowing into the heat exchange channel from the inlet channel will pass through the heat exchange channel and then flow out from the outlet channel. In this design, the heat exchange channel is concentrated and directly acts on the light-emitting device; the coolant in the heat exchange channel passes through the heat exchange channel without obstruction, and the coolant flow rate is faster, which can quickly remove heat and improve heat dissipation efficiency.

[0023] The laser provided by this invention includes the aforementioned heat dissipation structure. Because the laser provided by this invention utilizes the aforementioned heat dissipation structure, it also possesses the advantages of a heat dissipation structure. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the heat dissipation structure provided in Embodiment 1 of this utility model;

[0026] Figure 2 This is a bottom view of the heat dissipation structure provided in Embodiment 1 of this utility model;

[0027] Figure 3 An exploded view of the heat dissipation structure provided in Embodiment 1 of this utility model;

[0028] Figure 4 An exploded view of the heat dissipation structure provided in Embodiment 2 of this utility model;

[0029] Figure 5 This is a top view of a laser provided in Embodiment 3 of the present invention;

[0030] Figure 6 This is a top view of another laser provided in Embodiment 3 of this utility model.

[0031] Icons: 1 - Liquid inlet channel; 2 - Liquid outlet channel; 3 - Inlet; 4 - Outlet; 5 - Base; 6 - Mounting base; 7 - First assembly surface; 8 - Second assembly surface; 9 - Annular groove; 10 - Guide groove; 11 - First narrow section; 12 - First wide section; 13 - Second narrow section; 14 - Second wide section; 15 - Light-emitting device. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Example 1

[0039] like Figure 1 - Figure 3 As shown, the heat dissipation structure provided by this utility model can dissipate heat from the light-emitting device 15 mounted thereon.

[0040] The heat dissipation structure includes a heat sink, and the heat sink has a flow channel inside. In this embodiment, the top surface of the heat sink is set as the heat dissipation surface, that is, the surface on which the light-emitting device 15 is installed.

[0041] The heat sink can be a single-piece component or an assembly. In this embodiment, the heat sink includes a mounting base 6 and a base 5 arranged vertically, with their upper and lower surfaces joined together to form the heat sink. Specifically, the top surface of the base 5 is the first mounting surface 7, and the bottom surface of the mounting base 6 is the second mounting surface 8. After the base 5 and the mounting base 6 are connected by welding or adhesive, the first mounting surface 7 and the second mounting surface 8 are attached, and the top surface of the mounting base 6 forms the surface for mounting the light-emitting device 15.

[0042] The inlet 3 and outlet 4 of the flow channel are connected to the coolant circulation system, so that the coolant can circulate into the heat sink and dissipate heat. The heat sink can quickly absorb the heat of the light-emitting device 15.

[0043] The flow channel can be formed by assembling structures on the mounting base 6 and the base 5. Specifically, the flow channel includes a liquid inlet channel 1, a heat exchange channel, and a liquid outlet channel 2 connected in sequence. In this embodiment, both the liquid inlet channel 1 and the liquid outlet channel 2 are disposed on the base 5. The outer ends of the liquid inlet channel 1 and the outer ends of the liquid outlet channel 2 are connected to the outer wall of the heat sink, forming the inlet 3 and the outlet 4 of the flow channel, respectively. Figure 2 As shown. In this embodiment, inlet 3 and outlet 4 are respectively located on the bottom surface of the heat sink. The liquid inlet channel 1 and the liquid outlet channel 2 can both extend in the vertical direction.

[0044] The heat exchange channel extends in a straight line, with its two ends directly connected to the inner ends of the inlet channel 1 and the outlet channel 2, respectively. Coolant flowing into the heat exchange channel from the inlet channel 1 passes through the heat exchange channel and then flows out from the outlet channel 2. In this design, the heat exchange channel is concentrated and directly acts on the light-emitting device 15; the coolant flows through the heat exchange channel without obstruction, resulting in a faster flow rate and rapid heat removal, thus improving heat dissipation efficiency.

[0045] The base 5 and the mounting base 6 can be connected together by welding or adhesive. The first mounting surface 7 and / or the second mounting surface 8 are provided with annular grooves 9 surrounding the flow channel, such as... Figure 3 As shown, in this embodiment, the base 5 and the mounting base 6 are connected by welding. An annular groove 9 is disposed on the first mounting surface 7, surrounding the outer circumference of the flow channel. Before welding, the annular groove 9 is filled with solder to prevent solder overflow during welding. Alternatively, in other feasible solutions, a sealing element, such as a sealing ring, can be placed inside the annular groove 9 to prevent coolant leakage from the flow channel when the first mounting surface 7 and the second mounting surface 8 are combined.

[0046] like Figure 3 As shown, in this embodiment, the guide channel 10 is disposed on the second assembly surface 8, and the inner ends of the liquid inlet channel 1 and the liquid outlet channel 2 are respectively connected to the opposite ends of the guide channel 10; the guide channel 10 and the first assembly surface 7 define the heat exchange channel.

[0047] The guide channel 10 extends in the left and right direction. After the base 5 and the mounting base 6 are connected, the first mounting surface 7 closes the downward opening of the guide channel 10. The first mounting surface 7 and the guide channel 10 define the heat exchange channel. The guide channel 10 is closer to the top surface of the mounting base 6 (that is, the coolant flowing through the guide channel 10 is closer to the light-emitting device 15), and the heat conduction effect is better.

[0048] The thickness of the base 5 can be set to be greater than that of the mounting base 6, so that the mounting base 6 can conduct heat more easily. Therefore, for ease of processing, both the liquid inlet channel 1 and the liquid outlet channel 2 are set on the base 5.

[0049] The number of heat exchange channels can be one or at least two. When there are at least two, the heat exchange channels are arranged in parallel. In this embodiment, there are multiple guide grooves 10 to form multiple heat exchange channels. The multiple guide grooves 10 are arranged in a row to increase the horizontal coverage area and absorb the heat generated by the light-emitting device 15 on the top surface of the mounting base 6, resulting in better heat absorption.

[0050] When there are at least two heat exchange channels, in order for the inlet channel 1 and the outlet channel 2 to be simultaneously connected to each heat exchange channel, the inlet channel 1 includes a first narrow section 11 and a first wide section 12 connected sequentially from the outside to the inside. The outer end of the first narrow section 11 forms an inlet 3, and the first wide section 12 is directly connected to one end of each heat exchange channel. The outlet channel 2 includes a second narrow section 13 and a second wide section 14 connected sequentially from the outside to the inside. The outer end of the second narrow section 13 forms an outlet 4, and the second wide section 14 is directly connected to the other end of each heat exchange channel. The cross-sectional shape of the first narrow section 11 and the second narrow section 13 can both be circular, while the cross-sectional shape of the first wide section 12 and the second wide section 14 can both be elliptical or rectangular.

[0051] Both the inlet channel 1 and the outlet channel 2 extend along a first direction, and the heat exchange channel extends along a second direction, with the first and second directions perpendicular to each other. In this embodiment, the first direction is vertical, while the second direction is horizontal. In other possible configurations, the inlet channel 1 and the outlet channel 2 can also be configured with other extending directions.

[0052] Example 2

[0053] like Figure 4 As shown, the difference from Embodiment 1 is that in this embodiment, the guide channel 10 is disposed on the first assembly surface 7, and the inner ends of the liquid inlet channel 1 and the liquid outlet channel 2 are respectively connected to the opposite ends of the guide channel 10; the guide channel 10 and the second assembly surface 8 define the heat exchange channel.

[0054] The guide channel 10 extends in the left and right direction. After the base 5 and the mounting base 6 are connected, the second mounting surface 8 closes the upward opening of the guide channel 10. The second mounting surface 8 and the guide channel 10 define the heat exchange channel. The coolant in the guide channel 10 can directly act on the second mounting surface 8. The surface of the mounting base 6 that faces the opposite direction to the second mounting surface 8 is the top surface of the mounting base 6.

[0055] In this embodiment, there is one guide channel 10 to form a heat exchange channel. The heat exchange channel is concentrated in one position and can correspond to the small-sized light-emitting device 15 (the downward projection surface of the light-emitting device 15 roughly covers the heat exchange channel).

[0056] Example 3

[0057] The laser provided by this utility model includes a light-emitting device 15 and the heat dissipation structure described in Embodiment 1. The number of guide channels 10 is at least two, and each guide channel 10 is arranged in parallel, forming a roughly rectangular maximum area. The light-emitting device 15 is disposed on one side of the second mounting surface 8 on the back of the mounting base 6. In this embodiment, the projection of the light-emitting device 15 on the second mounting surface is located within the maximum area formed by all the guide channels 10. The coolant flowing through the guide channels 10 can directly absorb the heat in the area where the guide channels 10 are located. By placing the light-emitting device 15 in this area, faster heat exchange can be achieved, improving heat exchange efficiency. In another feasible embodiment, the projection of the light-emitting device 15 on the second mounting surface 8 overlaps with the maximum area formed by all the guide channels 10, that is, the outer contour shape and area of ​​the light-emitting device 15 in the top view direction are consistent with the shape and area of ​​the maximum area formed by the guide channels 10.

[0058] like Figure 5 As shown, in this embodiment, the guide channel 10 is relatively short and does not cover the area where the inner port of the liquid inlet channel 1 and the inner port of the liquid outlet channel 2 are located. Therefore, the light-emitting device 15 is disposed between the inner port of the liquid inlet channel 1 and the inner port of the liquid outlet channel 2.

[0059] In another feasible option, such as Figure 6 As shown, the guide channel 10 is relatively long, covering the area where the inner port of the liquid inlet channel 1 and the inner port of the liquid outlet channel 2 are located. Therefore, light-emitting devices 15 can be set in the area above the inner port of the liquid inlet channel 1 and the inner port of the liquid outlet channel 2. The downward projection of the light-emitting devices 15 falls within the inner port of the liquid inlet channel 1 and the inner port of the liquid outlet channel 2, respectively.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A heat dissipation structure, characterized in that, include: The heat sink has a flow channel inside, which includes a liquid inlet flow channel (1), a heat exchange flow channel and a liquid outlet flow channel (2) connected in sequence. The outer ends of the liquid inlet flow channel (1) and the outer ends of the liquid outlet flow channel (2) are connected to the outer wall of the heat sink and form the inlet (3) and outlet (4) of the flow channel respectively. The heat exchange channel extends in a straight line, and its two ends are directly connected to the inner ends of the liquid inlet channel (1) and the liquid outlet channel (2), respectively.

2. The heat dissipation structure according to claim 1, characterized in that, The heat sink includes a base (5) and a mounting base (6). The base (5) has a first mounting surface (7) and the mounting base (6) has a second mounting surface (8). After the base (5) and the mounting base (6) are connected, the first mounting surface (7) and the second mounting surface (8) are in contact.

3. The heat dissipation structure according to claim 2, characterized in that, The first assembly surface (7) and / or the second assembly surface (8) are provided with an annular groove (9) surrounding the flow channel, and the annular groove (9) is used to fill the sealant, solder or adhesive.

4. The heat dissipation structure according to claim 2, characterized in that, The first assembly surface (7) is provided with a guide groove (10) extending in a straight line, and the inner end of the liquid inlet channel (1) and the inner end of the liquid outlet channel (2) are respectively connected to the opposite ends of the guide groove (10). The guide groove (10) and the second assembly surface (8) define the heat exchange channel.

5. The heat dissipation structure according to claim 2, characterized in that, The second assembly surface (8) is provided with a guide groove (10) extending in a straight line, and the inner end of the liquid inlet channel (1) and the inner end of the liquid outlet channel (2) are respectively connected to the opposite ends of the guide groove (10). The guide groove (10) and the first assembly surface (7) define the heat exchange channel.

6. The heat dissipation structure according to claim 4 or 5, characterized in that, The inlet channel (1) and outlet channel (2) are both located on the base (5).

7. The heat dissipation structure according to any one of claims 1-5, characterized in that, The number of heat exchange channels is at least two, and the heat exchange channels are arranged in parallel.

8. The heat dissipation structure according to claim 7, characterized in that, The liquid inlet channel (1) includes a first narrow section (11) and a first wide section (12) connected sequentially from the outside to the inside. The outer end of the first narrow section (11) forms the inlet (3), and the first wide section (12) is connected to one end of each of the heat exchange channels. The liquid outlet channel (2) includes a second narrow section (13) and a second wide section (14) connected sequentially from the outside to the inside. The outer end of the second narrow section (13) forms the outlet (4), and the second wide section (14) is connected to the other end of each of the heat exchange channels.

9. The heat dissipation structure according to claim 1, characterized in that, The liquid inlet channel (1) and the liquid outlet channel (2) both extend along a first direction, and the heat exchange channel extends along a second direction, with the first direction being perpendicular to the second direction.

10. A laser, characterized in that, Includes a light-emitting device (15) and the heat dissipation structure of claim 5, wherein the number of the flow channels (10) is at least two; The light-emitting device (15) is disposed on one side of the second mounting surface (8) on the back of the mounting base (6); The projection of the light-emitting device (15) on the second assembly surface (8) overlaps with the largest area formed by all the guide grooves (10), or the projection of the light-emitting device (15) on the second assembly surface is located within the largest area formed by all the guide grooves (10).

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