Radiating seat and laser

Abstract

The utility model provides a heat dissipation seat and a laser, and relates to the technical field of laser equipment, the heat dissipation seat comprises a base, the circumferential side wall of the base is provided with a plurality of installation positions distributed along the circumferential direction, and the installation positions are used for installing devices; a liquid inlet and a liquid outlet are formed in the first end face of the base, heat dissipation flow channels communicating with the liquid inlet and the liquid outlet are formed in the base, and the heat dissipation flow channels comprise a main liquid inlet channel, branch flow channels and a main liquid outlet flow channel; a branch flow channel is arranged on the inner side of the mounting position; an opening in one end of the main liquid inlet channel forms a liquid inlet, and an opening in the other end of the main liquid inlet channel is communicated with one end of the branch flow channel through a curved transition flow channel; the other end of the branch flow channel communicates with one end of the main liquid outlet flow channel, and a liquid outlet is formed in the other end of the main liquid outlet flow channel.

Description

Technical Field

[0001] The utility model relates to the technical field of laser equipment, in particular to a heat sink and a laser. Background Art

[0002] Semiconductor lasers have the advantages of small size, light weight, long life and wide wavelength coverage.

[0003] To increase the total output energy, existing lasers have multiple chips. Each chip often uses a stepped heat sink structure as a welding heat sink to achieve a stepped spatial arrangement of the chips, and a reflector is set at each step to deflect the beam of each laser chip.

[0004] The laser obtained by this setting method occupies more plane space. Utility Model Content

[0005] The purpose of the utility model is to provide a heat sink and a laser, so as to alleviate the technical problem that the existing laser occupies a large amount of plane space.

[0006] In a first aspect, the present invention provides a heat sink, comprising: a base, a circumferential sidewall of the base being provided with a plurality of mounting locations distributed along the circumference, the mounting locations being used to mount components;

[0007] A heat dissipation channel is provided inside the base, and the heat dissipation channel includes a main liquid inlet channel, a branch flow channel and a main liquid outlet flow channel;

[0008] The branch flow channel corresponds to the installation position and is arranged on the inner side of the installation position;

[0009] One end of the main liquid inlet channel is opened to form a liquid inlet and is arranged on the first end surface of the base. The other end of the main liquid inlet channel is opened and communicates with one end of the branch channel through a curved transition channel.

[0010] One end of the total liquid outlet channel is opened to form a liquid outlet and is arranged on the first end surface of the base, and the other end of the total liquid outlet channel is communicated with the other end of the branch channel.

[0011] Furthermore, a plurality of branch flow channels are arranged around the main liquid inlet channel.

[0012] Furthermore, a projection of the installation position along the radial direction of the base toward the inner side of the base covers at least two branch flow channels.

[0013] Furthermore, the base also includes a second end face arranged opposite to the first end face, and the length of the branch flow channel along the direction from the first end face to the second end face is not less than the length of the installation position.

[0014] Furthermore, the total liquid outlet flow channel includes an annular flow channel and an outlet flow channel, and one end of the annular flow channel is connected to the branch flow channel;

[0015] The end face of the other end of the annular flow channel is set as an annular slope, and an interface connected to one end of the outlet flow channel is provided on the annular slope, and the other end of the outlet flow channel forms a liquid outlet; along the axial direction of the annular flow channel, the interface is located at the position on the annular slope where the distance from the first end face is the smallest.

[0016] Furthermore, the number of the curved transition flow channel is one, and all branch flow channels are connected to the curved transition flow channel.

[0017] Furthermore, the base further includes a second end surface arranged opposite to the first end surface;

[0018] The curved transition channel also includes a second turning portion connected to the first turning portion and the branch channel respectively, so that the coolant changes its flow direction from the radial direction of the base to the flow direction from the second end surface to the first end surface.

[0019] The curved transition channel also includes a second turning portion connected to the first turning portion and the branch channel respectively, so that the coolant turns from moving in the radial direction of the base to a flow direction from the second end face toward the first end face.

[0020] Furthermore, the cross-sectional area of ​​the first turning portion gradually increases along the direction from the first end surface toward the second end surface.

[0021] Furthermore, along the radial direction of the base, the distance between the branch flow channel and the installation position ranges from 0.8 mm to 1.3 mm.

[0022] In a second aspect, the present invention provides a laser comprising the above-mentioned heat sink.

[0023] The present invention has at least the following advantages or beneficial effects:

[0024] The utility model provides a heat sink comprising: a base, a plurality of circumferentially distributed mounting positions being provided on the circumferential side walls of the base, the mounting positions being used to mount components; a heat dissipation channel being provided inside the base, the heat dissipation channel comprising a total liquid inlet channel, a branch channel and a total liquid outlet channel; the branch channel corresponding to the mounting position and being arranged on the inner side of the mounting position; an opening at one end of the total liquid inlet channel forming a liquid inlet being arranged on the first end face of the base, and an opening at the other end of the total liquid inlet channel being connected to one end of the branch channel via a curved transition channel; an opening at one end of the total liquid outlet channel forming a liquid outlet being arranged on the first end face of the base, and the other end of the total liquid outlet channel being connected to the other end of the branch channel.

[0025] This solution differs from a planar arrangement in that it utilizes a three-dimensional base and arranges components on its circumferential sidewalls, thereby utilizing the circumferential space and making the laser more compact. Furthermore, a heat dissipation channel is provided on the base to cool each mounting location. Furthermore, because the main inlet channel and the branch channels are connected via a curved transition channel, rather than a right-angle channel connection, the resistance to coolant flow in the main inlet channel and the branch channels is reduced, resulting in less kinetic energy loss. Existing right-angle connections (at right-angle corners) increase the flow resistance of the coolant in the pipe, affecting heat dissipation.

[0026] The laser provided by the present invention includes the above-mentioned heat sink. Since the laser provided by the present invention uses the above-mentioned heat sink, the laser provided by the present invention also has the advantages of the heat sink. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A schematic diagram of a heat sink provided by an embodiment of the present utility model;

[0029] Figure 2 A schematic diagram of a first end surface of a heat sink provided in an embodiment of the present invention;

[0030] Figure 3 for Figure 2 A-A cross-sectional view;

[0031] Figure 4 A side view of a heat sink provided by an embodiment of the present utility model;

[0032] Figure 5 for Figure 4 Sectional view of line B-B;

[0033] Figure 6 for Figure 4 Sectional view of C-C in the middle;

[0034] Figure 7 A schematic diagram of the guide channel of the heat sink provided in an embodiment of the present utility model.

[0035] Icons: 1-base; 2-installation position; 3-liquid inlet; 4-liquid outlet; 5-main liquid inlet channel; 6-branch flow channel; 7-main liquid outlet flow channel; 8-curved transition flow channel; 9-annular flow channel; 10-outlet flow channel; 11-annular slope; 12-interface; 13-first turning part; 14-second turning part; 15-first end face; 16-second end face. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0037] 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 rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it 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 rather that it can be slightly tilted.

[0041] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0042] The heat sink provided by the utility model can be used in, but is not limited to, semiconductor lasers.

[0043] like Figure 1 As shown, the heat sink includes a base 1. The main body shape of the base 1 can be cylindrical, prismatic or tower-shaped.

[0044] The circumferential sidewalls of the base 1 are provided with multiple mounting locations 2 distributed along the circumference. Circumferentially adjacent mounting locations 2 can be connected or spaced apart. Mounting locations 2 are used to mount components, with each mounting location 2 corresponding to a component. The components can include a heat sink and a chip. The heat sink is connected to the mounting location 2, and the chip is connected to the heat sink.

[0045] like Figure 3 As shown, a heat dissipation channel is provided inside the base 1, which includes a main liquid inlet channel 5, a branch channel 6 and a main liquid outlet channel 7. The coolant flows through the main liquid inlet channel 5, the branch channel 6 and the main liquid outlet channel 7 in sequence and then is discharged from the base 1.

[0046] The branch flow channel 6 corresponds to the installation position 2 and is arranged on the inner side of the installation position 2. The branch flow channel 6 absorbs heat at the installation position 2.

[0047] One end of the total liquid inlet channel 5 opens to form a liquid inlet 3 and is arranged on the first end surface 15 of the base 1, and the other end of the total liquid inlet channel 5 opens to communicate with one end of the branch channel 6 through a curved transition channel 8; one end of the total liquid outlet channel 7 opens to form a liquid outlet 4 and is arranged on the first end surface 15 of the base 1, and the other end of the total liquid outlet channel 7 is communicated with the other end of the branch channel 6.

[0048] like Figure 1 and Figure 2 As shown, the first end surface 15 of the base 1 is provided with a liquid inlet 3 and a liquid outlet 4. These inlet 3 and outlet 4 on the first end surface 15 are used to connect to the two connectors of the coolant circulation mechanism, thereby enabling the circulation of coolant within the heat sink. The other end opening of the main liquid inlet channel 5 connects to one end of the branch channel 6 via a curved transition channel 8. This connection between the two reduces resistance when the coolant transitions from the main liquid inlet channel 5 to the branch channel 6.

[0049] First, this solution differs from a planar arrangement in that it utilizes a three-dimensional base 1 and arranges components on its circumferential sidewalls, thereby utilizing the circumferential space and making the laser more compact. Second, a heat dissipation channel is provided on the base 1 to cool each mounting position 2. Furthermore, because the main liquid inlet channel 5 and the branch channel 6 are connected via a curved transition channel 8 rather than a right-angle channel connection, the resistance to the flow of coolant in the main liquid inlet channel 5 and the branch channel 6 is reduced, resulting in less kinetic energy loss. Existing right-angle connections (at right-angle corners) increase the flow resistance of the coolant in the pipe, affecting heat dissipation.

[0050] A plurality of branch flow channels 6 are arranged around the main liquid inlet channel 5 .

[0051] like Figure 4 - Figure 6 As shown, the main liquid inlet channel 5 is arranged roughly in the middle position, and multiple branch channels 6 are arranged around the main liquid inlet channel 5, which can make space utilization higher, and the main liquid inlet channel 5 can evenly transport coolant to each branch channel 6.

[0052] The projection of the installation position 2 toward the inner side of the base 1 along the radial direction of the base 1 covers at least two branch flow channels 6 .

[0053] To improve the heat dissipation rate at mounting location 2, the heat exchange area between mounting location 2 and the corresponding branch channel 6 can be increased. However, increasing the diameter of branch channel 6 would increase the volume of base 1. Therefore, a micro-channel design is adopted, with branch channels 6 having a smaller diameter. However, the number of branch channels 6 inside mounting location 2 is set to be greater than or equal to two, thereby increasing the heat exchange area. Furthermore, the increased number of branch channels 6 further increases the flow rate of the coolant and improves heat dissipation efficiency.

[0054] The base 1 also includes a second end face 16 arranged opposite to the first end face 15. Along the direction from the first end face 15 toward the second end face 16, that is, along the axial direction of the base 1, the length of the branch channel 6 is greater than or equal to the length of the installation position 2, and the contact area between the branch channel 6 and the installation position 2 is larger, further improving the heat dissipation efficiency of the device.

[0055] like Figure 7 As shown, the total liquid outlet channel 7 includes an annular channel 9 and an outlet channel 10, one end of the annular channel 9 is connected to the branch channel 6; the end face of the other end of the annular channel 9 is set as an annular slope 11, and the annular slope 11 is provided with an interface 12 connected to one end of the outlet channel 10, and the other end of the outlet channel 10 forms a liquid outlet 4; along the axial direction of the annular channel 9, the interface is located at the position on the annular slope 11 at the minimum distance from the first end face 15.

[0056] After flowing out of each branch flow channel 6, the coolant enters the annular flow channel 9 and then flows along the axial direction of the annular flow channel 9 toward the first end surface 15. In the annular flow channel 9, the coolant radially away from the interface 12 will flow toward the first end surface 15 and contact the annular bevel 11. Then, under the guidance of the annular bevel 11, it flows toward the interface 12. The annular bevel 11 guides the coolant, reduces resistance, and further accelerates the flow rate of the coolant returning to the liquid outlet 4.

[0057] In other possible implementations, the number of curved transition channels 8 can be the same as the number of branch channels 6, with a one-to-one correspondence. In this embodiment, each curved transition channel 8 can be U-shaped, with two 90° turns. The 90° turns of the curved transition channels 8 enable continuous changes in the flow direction and flow rate of the coolant.

[0058] In this embodiment, the number of the curved transition flow channel 8 is one, and all branch flow channels 6 are connected to the curved transition flow channel 8 to achieve a uniform turning of the coolant.

[0059] Specifically, such as Figure 3 As shown, the base 1 also includes a second end face 16 arranged opposite to the first end face 15; the curved transition flow channel 8 includes a first turning portion 13 connected to the total liquid inlet channel 5, so that the flow direction of the coolant from the first end face 15 toward the second end face 16 turns to the radial direction along the base 1; the curved transition flow channel 8 also includes a second turning portion 14 connected to the first turning portion 13 and the branch flow channel 6 respectively, so that the coolant changes from the flow direction along the radial direction of the base 1 to the flow direction from the second end face 16 to the first end face 15.

[0060] The coolant flowing out of the total liquid inlet channel 5 enters the first turning portion 13 uniformly, then flows toward the side of the second end face 16, and gradually diffuses radially outward to complete the first arc turn. Subsequently, the coolant flows into the second turning portion 14, and the coolant turns from the radial direction of the base 1 to the flow direction from the second end face 16 toward the first end face 15, completing the second outward turn. At this point, the flow direction of the coolant has made a 180° turn, and both turns are arc-shaped transitions with less resistance.

[0061] The cross-sectional area of ​​the first turning portion 13 gradually increases along the direction from the first end surface 15 to the second end surface 16 . The first portion has a larger capacity, thereby reducing the resistance of the coolant flowing out of the main liquid inlet channel 5 .

[0062] Along the radial direction of the base 1, the distance between the branch channel 6 and the mounting position 2 ranges from 0.8 mm to 1.3 mm. The closer the branch channel 6 is to the device, the better the heat dissipation, but this is limited by the strength of the material.

[0063] The materials of the heat sink in this application include aluminum, copper and other high heat dissipation materials.

[0064] The laser provided by the present invention includes the above-mentioned heat sink. Since the laser provided by the present invention uses the above-mentioned heat sink, the laser provided by the present invention also has the advantages of the heat sink.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat sink, characterized in that: include: A base (1), wherein a plurality of mounting positions (2) distributed along the circumferential direction are provided on a circumferential side wall of the base (1), and the mounting positions (2) are used for mounting devices; A heat dissipation channel is provided inside the base (1), and the heat dissipation channel includes a main liquid inlet channel (5), a branch channel (6) and a main liquid outlet channel (7); The branch flow channel (6) is arranged on the inner side of the installation position (2); One end opening of the total liquid inlet channel (5) forms a liquid inlet (3) disposed on a first end surface (15) of the base (1), and the other end opening of the total liquid inlet channel (5) is connected to one end of the branch flow channel (6) via a curved transition flow channel (8); One end of the total liquid outlet channel (7) is opened to form a liquid outlet (4) disposed on the first end surface (15) of the base (1), and the other end of the total liquid outlet channel (7) is connected to the other end of the branch channel (6).

2. The heat sink according to claim 1, characterized in that: A plurality of branch flow channels (6) are arranged around the main liquid inlet channel (5).

3. The heat sink according to claim 1, wherein: The projection of the installation position (2) toward the inner side of the base (1) along the radial direction of the base (1) covers at least two branch flow channels (6).

4. The heat sink according to claim 1, wherein: The base (1) further comprises a second end face (16) arranged opposite to the first end face (15), and in a direction from the first end face (15) toward the second end face (16), the length of the branch flow channel (6) is not less than the length of the installation position (2).

5. The heat sink according to any one of claims 1 to 4, characterized in that: The total liquid outlet flow channel (7) comprises an annular flow channel (9) and an outlet flow channel (10), and one end of the annular flow channel (9) is connected to the branch flow channel (6); The end surface of the other end of the annular flow channel (9) is configured as an annular inclined surface (11), and the annular inclined surface (11) is provided with an interface (12) that communicates with one end of the outlet flow channel (10), and the other end of the outlet flow channel (10) forms the liquid outlet (4).

6. The heat sink according to claim 1, characterized in that: The number of the curved transition flow channel (8) is one, and all the branch flow channels (6) are connected to the curved transition flow channel (8).

7. The heat sink according to claim 6, characterized in that: The base (1) further includes a second end surface (16) arranged opposite to the first end surface (15); The curved transition channel (8) includes a first turning portion (13) connected to the main liquid inlet channel (5), so that the flow direction of the cooling liquid from the first end surface (15) toward the second end surface (16) turns to the radial direction along the base (1); The curved transition channel (8) further includes a second turning portion (14) connected to the first turning portion (13) and the branch channel (6), respectively, so that the coolant changes its flow direction from the radial direction of the base (1) to the flow direction from the second end face (16) to the first end face (15).

8. The heat sink according to claim 7, characterized in that: Along the direction from the first end surface (15) to the second end surface (16), the cross-sectional area of ​​the first turning portion (13) gradually increases.

9. The heat sink according to claim 1, wherein: Along the radial direction of the base (1), the distance between the branch flow channel (6) and the installation position (2) ranges from 0.8 mm to 1.3 mm.

10. A laser, characterized in that: The heat sink comprises the heat sink described in any one of claims 1 to 9.

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