Heat dissipation components and fiber lasers

Abstract

The present invention relates to the field of fiber laser heat dissipation technology, and in particular to a heat dissipation component and a fiber laser. The heat dissipation component comprises: a flow channel, the flow channel comprises an inner layer flow channel and an outer layer flow channel arranged in parallel; in the length direction of the flow channel, the inner layer flow channel comprises at least two inner layer sub-flow channels arranged at intervals, and the outer layer flow channel comprises at least two outer layer sub-flow channels arranged at intervals; in the length direction of the flow channel, the adjacent inner layer sub-flow channels and outer layer sub-flow channels are interconnected, and the interconnected inner layer sub-flow channels and outer layer sub-flow channels are located at different positions. The heat dissipation component provided by the present invention can make the heat exchange capacity of the part of the heat dissipation element close to the medium outflow end large, the heat dissipation amount large, the temperature reduction large, and the temperature low, thereby reducing the temperature difference between the two ends of the heat dissipation element, which is beneficial to improving the heat dissipation uniformity and temperature uniformity of the heat dissipation element.

Description

Technical Field

[0001] The present invention relates to the field of heat dissipation technology, and in particular to a heat dissipation component and an optical fiber laser. Background Art

[0002] Fiber laser refers to a laser that uses rare earth-doped glass fiber as a gain medium. Fiber lasers have a wide range of applications, such as laser fiber communications, laser space long-distance communications, industrial shipbuilding, automobile manufacturing, laser engraving, laser marking, laser cutting, and metal or non-metal drilling, cutting or welding, etc.

[0003] A heat dissipation component includes a heat dissipation duct and heat dissipation teeth arranged in the heat dissipation duct. A fan is arranged at one end of the heat dissipation duct to make gas flow from the air inlet end of the heat dissipation duct to the air outlet end of the heat dissipation duct. The gas exchanges heat with the optical fiber disk during the flow process, thereby dissipating the heat of the optical fiber disk. The problem is that the gas begins to exchange heat with the optical fiber disk after entering the air inlet end. As the gas moves, the temperature of the gas also rises, and the temperature difference between the gas and the optical fiber disk decreases, and the heat exchange between the two decreases; therefore, the heat exchange of the optical fiber disk close to the air outlet end is small, the heat dissipation is small, and the temperature is high. Summary of the invention

[0004] The purpose of the present invention is to provide a heat dissipation assembly and a fiber laser, so as to solve the technical problems existing in the prior art that the part of the fiber disk near the air outlet end has low heat exchange capacity, low heat dissipation and high temperature.

[0005] The present invention provides a heat dissipation component, comprising: a flow channel, the flow channel comprising an inner layer flow channel and an outer layer flow channel arranged in parallel; in the length direction of the flow channel, the inner layer flow channel comprises at least two inner layer sub-flow channels arranged at intervals, and the outer layer flow channel comprises at least two outer layer sub-flow channels arranged at intervals; in the length direction of the flow channel, the adjacently arranged inner layer sub-flow channels and the outer layer sub-flow channels are interconnected, and the interconnected inner layer sub-flow channels and the outer layer sub-flow channels are located at different positions.

[0006] When using the heat dissipation component provided by the present invention, the heat dissipation component provided by the present invention is connected to the heat dissipation element, the inner layer flow channel is attached to the plate surface of the heat dissipation element, and the outer layer flow channel is arranged on the side of the inner layer flow channel away from the heat dissipation element; a fluid power source is arranged at at least one end of the flow channel, and the fluid power source enables the cooling medium to enter the inner layer flow channel and the outer layer flow channel respectively from the medium inlet end of the flow channel. In the medium conveying direction, the medium first enters the first inner layer sub-flow channel and the first outer layer sub-flow channel, and then the medium can flow from the first inner layer sub-flow channel into the second outer layer sub-flow channel downstream. Similarly, the medium can enter from the first outer layer sub-flow channel into the second inner layer outer flow channel downstream, and so on, until the medium flows out from the medium outlet end. During this process, the medium in the inner layer flow channel can be exchanged with the medium in the outer layer flow channel; the medium in the inner layer flow channel close to the heat dissipation element has a large heat exchange capacity and a small temperature difference with the heat dissipation element, while the medium in the outer layer flow channel away from the heat dissipation element has a large temperature difference. The medium has a smaller heat exchange capacity than the medium in the inner flow channel, and has a larger temperature difference with the heat dissipated element. The medium in the inner flow channel can exchange with the medium in the outer flow channel. After the medium in the outer flow channel enters the inner flow channel, it can achieve a large heat exchange capacity with the downstream heat dissipated element, so that the heat dissipation and temperature reduction of the heat dissipated element are large, so that the heat exchange capacity of the heat dissipated element close to the medium outflow end is large, the heat dissipation capacity is large, the temperature reduction is large, and the temperature is low, thereby reducing the temperature difference at both ends of the heat dissipated element, which is beneficial to improving the heat dissipation uniformity and temperature uniformity of the heat dissipated element. When the heat dissipated element is a fiber optic disc, the heat exchange capacity of the fiber optic disc close to the medium outflow end is naturally large, the heat dissipation capacity is large, the temperature reduction is large, and the temperature is low, thereby reducing the temperature difference at both ends of the fiber optic disc, which is beneficial to improving the heat dissipation uniformity and temperature uniformity of the fiber optic disc.

[0007] Furthermore, a partition is provided in the flow channel, and the partition divides the flow channel into the inner layer flow channel and the outer layer flow channel; baffles are respectively connected to both sides of the partition, and the sides of the baffles away from the partition are abutted against the inner wall of the flow channel, the baffle in the inner layer flow channel divides the inner layer flow channel into at least two inner layer sub-flow channels, and the baffle in the outer layer flow channel divides the outer layer flow channel into at least two outer layer sub-flow channels; at least two flow exchange ports are provided on the partition, and the inner layer sub-flow channel and the outer layer sub-flow channel are connected through the flow exchange ports.

[0008] Furthermore, the baffle includes an upper baffle, a lower baffle and a middle baffle connected between the upper baffle and the lower baffle; in the width direction of the partition, among two adjacent flow exchange ports, the upper baffle is provided upstream of one flow exchange port, the lower baffle is provided downstream of the other flow exchange port, a middle baffle is provided between the two adjacent flow exchange ports, and for the same flow exchange port, in the length direction of the flow channel, an upper baffle is provided on one side of the flow exchange port, and a lower baffle is provided on the other side of the flow exchange port.

[0009] Furthermore, the heat dissipation component also includes a plurality of basic tooth plates arranged in the inner layer sub-channel, the length direction of the basic tooth plates is the same as the length direction of the channel, and the plurality of basic tooth plates are arranged at intervals along the width direction of the channel; one end of the basic tooth plate close to the flow exchange port is arranged in an inclined surface, and in the thickness direction of the flow channel, the side of the basic tooth plate close to the partition is arranged away from the flow exchange port.

[0010] Furthermore, a plurality of commutation teeth are provided at a position of the inner sub-channel that is opposite to the commutation port, and the length direction of the commutation teeth is the same as the length direction of the channel, and the plurality of commutation teeth are arranged at intervals along the width direction of the channel; the side of the commutation teeth close to the partition is arranged in an inclined manner, and in the thickness direction of the channel, the side of the commutation teeth away from the partition is arranged away from the baffle.

[0011] Furthermore, in the length direction of the flow channel, the number of the flow exchange ports is one, and in the width direction of the flow channel, the number of the flow exchange ports is multiple; a baffle is provided on each side of the partition, there are two inner layer sub-flow channels, one is the inner layer upstream flow channel, and the other is the inner layer downstream flow channel, and the number of the outer layer sub-flow channels is two, one is the outer layer upstream flow channel, and the other is the outer layer downstream flow channel.

[0012] Furthermore, there are three flow exchange ports, one of which is an inner-outer flow exchange port, and the other two are outer-inner flow exchange ports, the inner-outer flow exchange port is located between the two outer-inner flow exchange ports; the inner layer upstream flow channel is connected with the outer layer upstream flow channel through the inner-outer flow exchange port, and the outer layer upstream flow channel is connected with the inner layer downstream flow channel through the outer-inner flow exchange port.

[0013] Furthermore, in the length direction of the partition, the center of the exchange port is located at one-half to two-thirds of the partition.

[0014] The present invention provides a fiber laser, comprising a heat dissipated element and the above heat dissipation assembly, wherein the flow channel is connected to the heat dissipated element, and the outer layer flow channel is located on a side of the inner layer flow channel away from the heat dissipated element.

[0015] Furthermore, the heat dissipated element forms a side wall of the flow channel.

[0016] It should be understood that both the foregoing general description and the following specific embodiments are for the purpose of example and illustration and do not necessarily limit the present disclosure. The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate the subject matter of the present disclosure. At the same time, the specification and the drawings are used to explain the principles of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a schematic structural diagram of a heat dissipation assembly according to an embodiment of the present invention;

[0019] Figure 2 For Figure 1 An exploded view of the heat sink assembly is shown;

[0020] Figure 3 for Figure 1 A schematic diagram of the structure of the partition in the heat dissipation assembly shown;

[0021] Figure 4 for Figure 1 A schematic diagram of the structure of the basic gear piece and the commutation gear piece in the heat dissipation assembly shown;

[0022] Figure 5 1 is a schematic diagram of the flow path of the fluid in the inner flow channel of the heat dissipation component shown in FIG.

[0023] Figure 6 1 is a schematic diagram of the flow path of the fluid in the outer flow channel of the heat dissipation component.

[0024] Icons: 10- partition; 20- inner flow channel; 30- outer flow channel; 40- inner baffle; 50- outer baffle; 60- inner and outer exchange ports; 70- outer and inner exchange ports; 80- basic tooth plate; 90- exchange tooth plate; 100- heat dissipation element; 21- inner upstream flow channel; 22- inner downstream flow channel; 31- outer upstream flow channel; 32- outer downstream flow channel; 41- inner upper baffle; 42- inner lower baffle; 43- inner middle baffle; 51- outer upper baffle; 52- outer lower baffle; 53- outer middle baffle; DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0027] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] It should be noted that the heat sink provided in the embodiment of the present invention can be used, but not limited to, to dissipate heat for optical fiber disks, and can also be used to dissipate heat for other components that require heat dissipation, such as power supplies; it can be used, but not limited to, for optical fiber lasers, and can also be used in other equipment and devices.

[0031] It should be noted that the length direction of the flow channel is also the conveying direction of the medium, that is, in the length direction of the flow channel, one end of the flow channel is the medium inlet end, and the other end of the flow channel is the medium outlet end. The conveying direction of the medium is from the medium inlet end to the medium outlet end.

[0032] Figure Figures 1 to 6As shown, the present invention provides a heat dissipation component, including a flow channel, the flow channel includes an inner layer flow channel 20 and an outer layer flow channel 30 arranged in parallel; in the length direction of the flow channel, the inner layer flow channel 20 includes at least two inner layer sub-flow channels arranged at intervals (at least two inner layer sub-flow channels are independent of each other and cannot be directly connected to each other), and the outer layer flow channel 30 includes at least two outer layer sub-flow channels arranged at intervals (at least two outer layer sub-flow channels are independent of each other and cannot be directly connected to each other); in the length direction of the flow channel, the adjacent inner layer sub-flow channels and the outer layer sub-flow channels are connected to each other, The inner layer sub-channel and the outer layer sub-channel which are interconnected are located at different positions. Specifically, one end of the channel is the medium inlet end, and the other end of the channel is the medium outlet end. Along the medium conveying direction from the medium inlet end to the medium outlet end, an inner layer sub-channel is connected to an outer layer sub-channel which is adjacent to the inner layer sub-channel and located downstream of the inner layer sub-channel, and an outer layer sub-channel is connected to an inner layer sub-channel which is adjacent to the outer layer sub-channel and located downstream of the outer layer sub-channel. The channel is used to be connected to the heat dissipation element, and the outer layer channel is located on the side of the inner layer channel away from the heat dissipation element.

[0033] For the convenience of description, in the medium conveying direction, an inner layer sub-channel located at the most upstream, that is, at the medium entrance end, can be defined as the first inner layer sub-channel, and the other inner layer sub-channels are arranged in sequence; an outer layer sub-channel located at the most upstream, that is, at the medium entrance end, can be defined as the first outer layer sub-channel, and the other outer layer sub-channels are arranged in sequence; in the medium conveying direction, the first outer layer sub-channel is adjacent to and connected with the second inner layer sub-channel, and the second inner layer sub-channel is located downstream of the first outer layer sub-channel, the first inner layer sub-channel is adjacent to and connected with the second outer layer sub-channel, and the second outer layer sub-channel is located downstream of the first inner layer sub-channel, and so on.

[0034] When using the heat dissipation assembly provided in this embodiment, the heat dissipation assembly provided in this embodiment is connected to the heat dissipation element 100, the inner layer flow channel 20 is attached to the plate surface of the heat dissipation element 100, and the outer layer flow channel 30 is arranged on the side of the inner layer flow channel 20 away from the heat dissipation element 100; a fluid power source is arranged at at least one end of the flow channel, and the fluid power source allows the cooling medium to enter the inner layer flow channel 20 and the outer layer flow channel 30 respectively from the medium inlet end of the flow channel. In the medium conveying direction, the medium first enters the first inner layer sub-channel and the first outer layer sub-channel, and then the medium can flow from the first inner layer sub-channel into the downstream second outer layer sub-channel. Similarly, the medium can flow from the first outer layer sub-channel into the downstream second inner layer outer channel, and so on, until the medium flows out from the medium outflow end. During this process, the medium in the inner layer channel 20 can be exchanged with the medium in the outer layer channel 30. The medium in the inner layer channel 20 close to the heat dissipation element 100 has a large heat exchange capacity and a small temperature difference with the heat dissipation element 100, while the medium in the outer layer channel 30 far away from the heat dissipation element 100 has a large temperature difference with the heat dissipation element 100. The medium in the laminar flow channel 20 has a small heat exchange capacity, and has a large temperature difference with the heat dissipation element 100. The medium in the inner flow channel 20 can be exchanged with the medium in the outer flow channel 30. After the medium in the outer flow channel 30 enters the inner flow channel 20, it can achieve a large heat exchange capacity with the downstream heat dissipation element 100, so that the heat dissipation amount and temperature drop of the heat dissipation element 100 are large, so that the heat exchange capacity of the part close to the medium outflow end of the heat dissipation element 100 is large, the heat dissipation amount is large, the temperature drop is large, and the temperature is low, thereby reducing the temperature difference at both ends of the heat dissipation element 100, which is beneficial to improving the heat dissipation uniformity and temperature uniformity of the heat dissipation element 100. When the heat dissipation element is a fiber optic disc, the heat exchange capacity of the part close to the medium outflow end of the fiber optic disc can naturally be large, the heat dissipation amount is large, the temperature drop is large, and the temperature can be reduced, thereby reducing the temperature difference at both ends of the fiber optic disc, which is beneficial to improving the heat dissipation uniformity and temperature uniformity of the fiber optic disc.

[0035] Among them, the fluid power source can be selected according to the properties of the fluid. For example, when the fluid is gas, the fluid power source can be a fan. A hair dryer can be set at the medium inlet end, or an exhaust fan can be set at the medium outlet end, or both a hair dryer and an exhaust fan can be set at the medium inlet end; when the fluid is liquid, a pump or other power parts can be set.

[0036] Preferably, the number of inner layer sub-channels is set to be the same as the number of outer layer sub-channels, which is convenient for processing, conducive to the replacement of the medium channel, and more conducive to the heat dissipation uniformity of the heat dissipation element 100.

[0037] Based on the above embodiments, the number of inner layer sub-channels can be three, four or five, etc., and correspondingly, the number of outer layer sub-channels can be three, four or five, etc. In the medium conveying direction, the first outer layer sub-channel is adjacent to and connected with the second inner layer sub-channel, and the second inner layer sub-channel is located downstream of the first outer layer sub-channel; the first inner layer sub-channel is adjacent to and connected with the second outer layer sub-channel, and the second outer layer sub-channel is located downstream of the first inner layer sub-channel; the second outer layer sub-channel is adjacent to and connected with the third inner layer sub-channel, and the third inner layer sub-channel is located downstream of the second outer layer sub-channel; the second inner layer sub-channel is adjacent to and connected with the third outer layer sub-channel, and the third outer layer sub-channel is located downstream of the second inner layer sub-channel, and so on. At this time, the two flow paths of the medium are both wavy.

[0038] Optionally, the number of inner layer sub-channels is two, and the number of outer layer sub-channels is two. In the medium conveying direction, the first outer layer sub-channel is adjacent to and connected with the second inner layer sub-channel, and the second inner layer sub-channel is located downstream of the first outer layer sub-channel; the first inner layer sub-channel is adjacent to and connected with the second outer layer sub-channel, and the second outer layer sub-channel is located downstream of the first inner layer sub-channel. At this time, the upstream part of the heat sink 100 (the part close to the medium inlet end) corresponds to the first inner layer sub-channel, and the downstream part of the heat sink 100 (the part close to the medium outlet end) corresponds to the second inner layer sub-channel; the first The medium in the inner sub-channel flows directly to the medium outflow end after being transferred into the second outer sub-channel, and the medium in the first outer sub-channel flows directly to the medium outflow end after being transferred into the second inner sub-channel. This structure, on the one hand, makes the structure of the channel simple, and on the other hand, the medium in the first outer sub-channel has less heat exchange capacity, and there is still a large temperature difference with the downstream part of the heat dissipation element 100, so it can exchange heat with the downstream part of the heat dissipation element 100 to a greater extent, and can further make the downstream part of the heat dissipation element 100 dissipate more heat and reduce the temperature more, and further improve the heat dissipation uniformity and temperature uniformity of the heat dissipation element 100.

[0039] Among them, the structural forms of the inner layer flow channel 20 and the outer layer flow channel 30 can be various, for example: the flow channel includes a plurality of zigzag pipes arranged in sequence along the width direction of the heat dissipation element 100, a part of the same zigzag pipe is arranged close to the heat dissipation element 100, and this part forms the inner layer flow channel 20, and another part of the zigzag pipe is arranged away from the heat dissipation element 100, and this part forms the outer layer flow channel 30, and the number of corners of the zigzag pipe is set according to the specific number of the inner layer flow channel 20 and the outer layer flow channel 30.

[0040] As an alternative, Figures 1 to 4As shown, a partition 10 is provided in the flow channel, and the partition 10 divides the flow channel into an inner layer flow channel 20 and an outer layer flow channel 30; baffles are connected to both sides of the partition 10, and the sides of the baffles away from the partition 10 are abutted against the inner wall of the flow channel, the baffle in the inner layer flow channel 20 divides the inner layer flow channel 20 into at least two inner layer sub-flow channels, and the baffle in the outer layer flow channel 30 divides the outer layer flow channel 30 into at least two outer layer sub-flow channels; at least two exchange ports are provided on the partition 10, and the inner layer sub-flow channel and the outer layer sub-flow channel are connected through the exchange ports.

[0041] In this embodiment, baffles are arranged on both sides of the partition 10, that is, an inner baffle 40 is arranged in the inner layer flow channel 20, and an outer baffle 50 is arranged in the outer layer flow channel 30; in the thickness direction of the flow channel, one side of the inner baffle 40 is connected to the partition 10, and the other side of the inner baffle 10 abuts against the inner wall of the inner layer flow channel 20, and in the width direction of the flow channel, the two sides of the inner baffle 40 abut against the corresponding inner walls of the inner layer flow channel 20 respectively; similarly, in the thickness direction of the flow channel, one side of the outer baffle 50 is connected to the partition 10, and the other side of the outer baffle 10 abuts against the inner wall of the outer layer flow channel 30, and in the width direction of the flow channel, the two sides of the outer baffle 50 abut against the corresponding outer walls of the outer layer flow channel 30 respectively.

[0042] The inner baffle 40 divides the inner channel 20 into at least two inner sub-channels (for example: when two inner baffles 40 are arranged on the partition 10 at intervals along the length direction of the channel, there are three inner sub-channels, and correspondingly, two outer baffles 50 are arranged on the partition 10 at intervals, and there are three outer sub-channels; similarly, when there are three inner baffles 40 and three outer baffles 50, there are four inner sub-channels and four outer sub-channels).

[0043] This structure further simplifies the flow channel structure; on the other hand, in the width direction of the flow channel, the inner layer sub-flow channel on one side of the partition 10 is continuous, and the outer layer sub-flow channel on the other side of the partition 10 is also continuous, so that the inner layer sub-flow channel can be continuously abutted with the heat dissipating element 100 in the width direction of the heat dissipating element 100, so that the heat exchange between the inner layer sub-flow channel and the heat dissipating element 100 can be uniform, and similarly, the heat exchange between the outer layer flow channel 30 and the inner layer flow channel 20 can be uniform. Optionally, the width of the inner layer sub-flow channel is not less than the width of the heat dissipating element 100, and the width of the outer layer sub-flow channel is the same as the width of the inner layer sub-flow channel.

[0044] Specifically, the baffle includes an upper baffle, a lower baffle, and a middle baffle connected between the upper baffle and the lower baffle; in the width direction of the partition 10, of two adjacent exchange ports, an upper baffle is provided upstream of one exchange port, a lower baffle is provided downstream of the other exchange port, a middle baffle is provided between the two adjacent exchange ports, and for the same exchange port, in the length direction of the flow channel, an upper baffle is provided on one side of the exchange port, and a lower baffle is provided on the other side of the exchange port. Preferably, the baffle is provided at the edge of the exchange port.

[0045] It can also be understood that the inner baffle 40 includes an inner upper baffle 41, an inner lower baffle 42 and an inner middle baffle 43, one end of the inner middle baffle 43 is connected to the inner upper baffle 41, and the other end of the inner middle baffle 43 is connected to the inner lower baffle 42; the outer baffle 50 includes an outer upper baffle 51, an outer lower baffle 52 and an outer middle baffle 53, one end of the outer middle baffle 53 is connected to the outer upper baffle 51, and the other end of the outer middle baffle 53 is connected to the outer lower baffle 52; in the width direction of the partition 10, of the two adjacent exchange ports, in the inner flow channel 20, the upper edge (along the intermediate layer) of the first exchange port An inner upper baffle 41 is arranged at the lower edge of the second exchange port (in the direction of mass transport, with the upstream direction as upward), an inner lower baffle 42 is arranged at the lower edge of the second exchange port, and an inner middle baffle 43 is arranged between the two exchange ports. Correspondingly, in the outer layer flow channel 30, an outer lower baffle 52 is arranged at the lower edge of the first exchange port, an outer upper baffle 51 is arranged at the upper edge of the second exchange port, and an outer middle baffle 53 is arranged between the two exchange ports. The middle baffle of the baffle separates the two adjacent exchange ports in the width direction of the flow channel, that is, the inner baffle 40 includes at least one Z-shaped plate segment, and the outer baffle 50 includes at least one Z-shaped plate segment.

[0046] The upper baffle located at the upper edge of the exchange port can prevent the medium from passing through the corresponding exchange port, and the lower baffle located at the lower edge of the exchange port can promote the medium to pass through the corresponding exchange port; thereby, the medium in the inner sub-channel can change its path and flow into the corresponding outer sub-channel through the second exchange port; the medium in the outer sub-channel can flow into the corresponding inner sub-channel through the first exchange port; that is, one of the two adjacent exchange ports is an inner-outer exchange port 60 for transferring the medium of the inner sub-channel into the outer sub-channel, and the other is an outer-inner exchange port 70 for transferring the medium of the outer sub-channel into the inner sub-channel, thereby realizing the mutual exchange of the medium of the inner channel 20 and the medium of the outer channel 30.

[0047] Among them, the flange of the exchange port can be used as the upper baffle or the lower baffle on one side of the partition 10, and the baffle on the other side of the partition 10 can be fixed to the inner wall of the partition 10 or the flow channel by welding, threaded connection or adhesive bonding.

[0048] The number of baffles on one side of the partition 10 is equal to the number of the exchange ports in the length direction of the flow channel. For example, in the length direction of the flow channel, when the number of the exchange ports is two, the number of the inner baffles 40 is two, the number of the inner sub-flow channels is three, the number of the outer baffles 50 is two, the number of the outer sub-flow channels is three, and so on.

[0049] As an optional solution, the number of inner sub-channels is two, and the number of outer sub-channels is two, that is, the number of inner baffles 40 and the number of outer baffles 50 are both one, and accordingly, in the length direction of the channel, the number of exchange ports is one (at the same position in the width direction of the channel, that is, in the length direction of the channel, one exchange port has no other exchange port arranged directly opposite to it), a baffle is provided on each side of the partition 10, there are two inner sub-channels, one is the inner upstream channel 21, and the other is the inner downstream channel 22, and there are two outer sub-channels, one is the outer upstream channel 31, and the other is the outer downstream channel 32. The corresponding beneficial effects have been described above and will not be repeated here.

[0050] Among them, in the width direction of the flow channel, the number of exchange ports can be two, that is, one inner-outer exchange port 60 and one outer-inner exchange port 70 are set; or the number of exchange ports is four, one inner-outer exchange port 60 and one outer-inner exchange port 70 are alternately set.

[0051] As an optional solution, the number of exchange ports is three, one of which is the inner-outer exchange port 60, and the other two are the outer-inner exchange ports 70. The inner-outer exchange port 60 is located between the two outer-inner exchange ports 70; the inner upstream flow channel 21 is connected with the outer upstream flow channel 31 through the inner-outer exchange port 60, and the outer upstream flow channel 31 is connected with the inner downstream flow channel 22 through the outer-inner exchange port 70.

[0052] In this embodiment, the medium in the inner upstream flow channel 21 gathers toward the inner-outer exchange port 60 located in the middle, and enters the outer downstream flow channel 32 through the inner-outer exchange port 60. After entering the outer downstream flow channel 32, the medium diffuses in all directions of the outer downstream flow channel 32, and the medium is transported as a whole to the medium outflow end; the medium in the outer upstream flow channel 31 is divided into two paths at the inner-outer exchange port, one path of medium enters the inner downstream flow channel 22 through an outer-inner exchange port 70, and the other path of medium enters the inner downstream flow channel 22 through another outer-inner exchange port 70. The two paths of medium merge in the inner downstream flow channel 22 and exchange heat with the downstream part of the heat element 100 together. This structure enables the relatively low-temperature medium in the outer upstream flow channel 31 to quickly enter the inner downstream flow channel 22, accelerate the heat exchange between this part of the medium and the heat element 100, and thus improve the heat dissipation efficiency of the heat element 100.

[0053] The position of the exchange port on the partition 10 can be set as needed, for example, the center of the exchange port is located at one-half to two-thirds of the partition 10 (for example, one-half, seven-twelfths or two-thirds, etc.), and after assembly, the distance between the exchange port and the medium inlet end of the partition 10 is one-half to two-thirds of the length of the partition 10. The medium in the outer upstream flow channel 31 will also exchange heat during transportation, and the temperature will increase. The above structure can ensure the heat dissipation effect of the heat dissipated element 100.

[0054] like Figures 2 to 6 As shown, based on the above-mentioned embodiment, further, the heat dissipation component also includes a plurality of basic tooth plates 80 arranged in the inner sub-channel, the length direction of the basic tooth plates 80 is the same as the length direction of the channel, and the plurality of basic tooth plates 80 are arranged at intervals along the width direction of the channel; the end of the basic tooth plate 80 close to the flow exchange port is arranged in an inclined surface, and in the thickness direction of the flow channel, the side of the basic tooth plate 80 close to the partition 10 is arranged away from the flow exchange port.

[0055] In this embodiment, a basic tooth piece 80 is arranged in the inner layer flow channel 20. In the thickness direction of the flow channel, one side of the basic tooth piece 80 is connected to the inner wall of one side of the inner layer sub-flow channel, and the other side of the basic tooth piece 80 is connected to the inner wall of the other side of the inner layer sub-flow channel, and a medium flow channel is formed between two adjacent basic tooth pieces 80; multiple basic tooth pieces 80 can improve the strength of the inner layer sub-flow channel, and can also increase the heat exchange area of ​​the medium, thereby improving the heat exchange efficiency, and can also disrupt the flow direction of the medium, so that the medium is turbulent, improve the heat exchange effect, and thus improve the heat dissipation effect of the heat dissipated element. An inclined surface is arranged at one end of the basic tooth piece 80 close to the exchange port, so that the multiple basic tooth pieces 80 can form a notch at the exchange port, so that the multiple medium flow channels are interconnected, so that the medium can be gathered or diffused in all directions.

[0056] like Figures 2 to 6As shown, on the basis of the above-mentioned embodiment, further, a plurality of commutation teeth 90 are provided at a position of the inner sub-channel that is opposite to the commutation port, and the length direction of the commutation teeth 90 is the same as the length direction of the channel, and along the width direction of the channel, a plurality of commutation teeth 90 are arranged at intervals; the side of the commutation teeth 90 close to the partition 10 is arranged in an inclined surface, and in the thickness direction of the channel, the side of the commutation teeth 90 away from the partition 10 is arranged away from the baffle (specifically, along the medium conveying direction: in the inner channel, an inner lower baffle is arranged at the lower edge of the inner and outer commutation ports, and an inner upper baffle is arranged at the upper edge of the outer inner commutation ports; in the outer channel, an outer upper baffle is arranged at the upper edge of the inner and outer commutation ports, and an outer lower baffle is arranged at the lower edge of the outer inner commutation ports). In this embodiment, the commutation teeth 90 can improve the strength of the inner layer flow channel 20 at the commutation port and improve the heat exchange effect at the commutation port. The commutation teeth 90 are arranged in an inclined surface, that is, a notch is arranged on one side of multiple commutation teeth 90, which can realize the collection or diffusion of the medium.

[0057] Specifically, Figure 5 As shown, the inclined surface of the commutation tooth plate 90 at the inner and outer commutation ports 60 is arranged face to face with the inclined surface of the base tooth plate 80 in the inner upstream flow channel 21, forming a V-shaped channel therebetween, and the opening of the V-shaped channel faces the inner and outer commutation ports 60; Figure 6 As shown, the inclined surface of the commutation tooth plate 90 at the outer inner commutation port 70 is arranged face to face with the inclined surface of the basic tooth plate 80 in the inner downstream flow channel 22 , forming a V-shaped channel therebetween, and the opening of the V-shaped channel faces the outer inner commutation port 70 .

[0058] The embodiment of the present invention further provides a fiber laser, comprising a heat dissipation element 100 and a heat dissipation assembly of any of the above technical solutions, wherein the flow channel is connected to the heat dissipation element 100, and the outer layer flow channel 30 is located on the side of the inner layer flow channel 20 away from the heat dissipation element 100. The fiber laser in this embodiment comprises a heat dissipation assembly of any of the above technical solutions, and thus has all the beneficial technical effects of the heat dissipation assembly, which will not be described in detail herein.

[0059] The flow channel may independently include a plurality of side plates connected end to end in sequence, and the flow channel is installed on the heat dissipation element 100 as an independent component.

[0060] As an optional solution, the heat element 100 forms a side wall of the flow channel, that is, one side plate of the flow channel is the heat element 100, and the medium in the inner flow channel 20 directly contacts the heat element 100, which can improve the heat exchange efficiency and heat exchange effect, thereby improving the heat dissipation efficiency and heat dissipation effect of the heat element 100. For example: the heat element 100 is a fiber optic disc, the flow channel is connected to the fiber optic disc, and the fiber optic disc directly serves as a side wall of the flow channel.

[0061] 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 them; although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In the description provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification. In addition, those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means being within the scope of the present invention and forming different embodiments.

Claims

1. A heat dissipation component, characterized in that: include: A flow channel, wherein the flow channel comprises an inner layer flow channel and an outer layer flow channel arranged in parallel; in the length direction of the flow channel, the inner layer flow channel comprises at least two inner layer sub-flow channels arranged at intervals, and the outer layer flow channel comprises at least two outer layer sub-flow channels arranged at intervals, the adjacent inner layer sub-flow channels and the outer layer sub-flow channels are connected to each other, and the inner layer sub-flow channels and the outer layer sub-flow channels connected to each other are located at different positions; The number of the inner layer sub-flow channels is set to be the same as the number of the outer layer sub-flow channels; One end of the flow channel is a medium inlet end, and the other end of the flow channel is a medium outlet end. In the medium conveying direction from the medium inlet end to the medium outlet end, one of the inner layer sub-flow channels located at the medium inlet end is defined as a first inner layer sub-flow channel, and the other inner layer sub-flow channels are arranged in sequence. One of the outer layer sub-flow channels located at the medium inlet end is defined as a first outer layer sub-flow channel, and the other outer layer sub-flow channels are arranged in sequence. The medium has two flow paths, both of which are wavy; Specifically, in the medium conveying direction, the first outer layer sub-channel is adjacent to and connected with the second inner layer sub-channel, and the second inner layer sub-channel is located downstream of the first outer layer sub-channel; the first inner layer sub-channel is adjacent to and connected with the second outer layer sub-channel, and the second outer layer sub-channel is located downstream of the first inner layer sub-channel, the second outer layer sub-channel is adjacent to and connected with the third inner layer sub-channel, and the third inner layer sub-channel is located downstream of the second outer layer sub-channel; the second inner layer sub-channel is adjacent to and connected with the third outer layer sub-channel, and the third outer layer sub-channel is located downstream of the second inner layer sub-channel, and so on.

2. The heat dissipation assembly according to claim 1, characterized in that: A partition is provided in the flow channel, and the partition divides the flow channel into the inner layer flow channel and the outer layer flow channel; baffles are respectively connected to the two sides of the partition, and the sides of the baffles away from the partition are abutted against the inner wall of the flow channel, the baffle in the inner layer flow channel divides the inner layer flow channel into at least two inner layer sub-flow channels, and the baffle in the outer layer flow channel divides the outer layer flow channel into at least two outer layer sub-flow channels; at least two flow exchange ports are provided on the partition, and the inner layer sub-flow channel and the outer layer sub-flow channel are connected through the flow exchange ports.

3. The heat dissipation assembly according to claim 2, characterized in that: The baffle includes an upper baffle, a lower baffle and a middle baffle connected between the upper baffle and the lower baffle; in the width direction of the partition, among two adjacent flow exchange ports, the upper baffle is provided upstream of one of the flow exchange ports, the lower baffle is provided downstream of the other flow exchange port, a middle baffle is provided between the two adjacent flow exchange ports, and for the same flow exchange port, in the length direction of the flow channel, an upper baffle is provided on one side of the flow exchange port, and a lower baffle is provided on the other side of the flow exchange port.

4. The heat dissipation assembly according to claim 3, characterized in that: The heat dissipation component also includes a plurality of basic tooth plates arranged in the inner layer sub-channel, the length direction of the basic tooth plates is the same as the length direction of the channel, and the plurality of basic tooth plates are arranged at intervals along the width direction of the channel; one end of the basic tooth plate close to the flow exchange port is arranged in an inclined surface, and in the thickness direction of the flow channel, the side of the basic tooth plate close to the partition is arranged away from the flow exchange port.

5. The heat dissipation assembly according to claim 4, characterized in that: A plurality of commutation teeth are provided at a position of the inner layer sub-channel that is opposite to the commutation port, and the length direction of the commutation teeth is the same as the length direction of the channel. Along the width direction of the channel, the plurality of commutation teeth are arranged at intervals; the side of the commutation teeth close to the partition is arranged in an inclined surface, and in the thickness direction of the channel, the side of the commutation teeth away from the partition is arranged away from the baffle.

6. The heat dissipation assembly according to claim 3, characterized in that: In the length direction of the flow channel, the number of the flow exchange ports is one, and in the width direction of the flow channel, the number of the flow exchange ports is multiple; a baffle is provided on each side of the partition, there are two inner layer sub-flow channels, one is the inner layer upstream flow channel, and the other is the inner layer downstream flow channel, and there are two outer layer sub-flow channels, one is the outer layer upstream flow channel, and the other is the outer layer downstream flow channel.

7. The heat dissipation assembly according to claim 6, characterized in that: There are three flow exchange ports, one of which is an inner-outer flow exchange port, and the other two are outer-inner flow exchange ports. The inner-outer flow exchange port is located between the two outer-inner flow exchange ports; the inner layer upstream flow channel is connected with the outer layer upstream flow channel through the inner-outer flow exchange port, and the outer layer upstream flow channel is connected with the inner layer downstream flow channel through the outer-inner flow exchange port.

8. The heat dissipation assembly according to claim 7, characterized in that: In the length direction of the partition, the center of the flow exchange port is located at one-half to two-thirds of the partition.

9. A fiber laser, characterized in that: It comprises a heat dissipation element and a heat dissipation assembly as described in any one of claims 1 to 8, wherein the flow channel is connected to the heat dissipation element, and the outer layer flow channel is located on a side of the inner layer flow channel away from the heat dissipation element.

10. The optical fiber laser according to claim 9, characterized in that: The heat dissipated element forms a side wall of the flow channel.

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