WO2023045073A1

WO2023045073A1 - Heat dissipation assembly and fiber laser

Info

Publication number: WO2023045073A1
Application number: PCT/CN2021/134479
Authority: WO
Inventors: 徐海军; 李瑞清; 朱亚辉; 杨伟; 刘江
Original assignee: 北京热刺激光技术有限责任公司
Priority date: 2021-09-27
Filing date: 2021-11-30
Publication date: 2023-03-30
Also published as: CN113783086A

Abstract

The present application relates to the technical field of heat dissipation of fiber lasers, in particular to a heat dissipation assembly and a fiber laser. The heat dissipation assembly comprises: a flow channel, wherein the flow channel comprises an inner flow channel and an outer flow channel, which are arranged in parallel; in the lengthwise direction of the flow channel, the inner flow channel comprises at least two inner sub-flow channels, which are arranged at an interval, and the outer flow channel comprises at least two outer sub-flow channels, which are arranged at an interval; and in the lengthwise direction of the flow channel, the inner sub-flow channel and the outer sub-flow channel, which are adjacently arranged, communicate with each other, and the inner sub-flow channel and the outer sub-flow channel, which communicate with each other, are located at different positions. By means of the heat dissipation assembly provided by the present application, the part of a component subjected to heat dissipation that is close to a medium outflow end has a large heat exchange amount and a large heat dissipation amount, and the temperature of the part is greatly reduced so that same has a low temperature; therefore, the temperature difference between two ends of the component subjected to heat dissipation can be reduced, which is beneficial to improving the heat dissipation uniformity and the temperature uniformity of the component subjected to heat dissipation.

Description

Cooling components and fiber lasers

Cross References to Related Applications

This application claims the priority of the Chinese patent application with application number 2021111387427 and titled "Heat Dissipation Component and Fiber Laser" filed with the China Patent Office on September 27, 2021, the entire contents of which are incorporated herein by reference.

technical field

The present application relates to the technical field of heat dissipation, in particular to heat dissipation components and fiber lasers.

Background technique

Fiber laser refers to a laser that uses rare earth-doped glass fiber as a gain medium. Fiber laser has a wide range of applications, such as: laser fiber communication, laser space long-distance communication, industrial shipbuilding, automobile manufacturing, laser engraving, laser marking, laser cutting And metal or non-metal drilling, cutting or welding, etc.

A heat dissipation assembly includes a heat dissipation air duct and heat dissipation teeth arranged in the heat dissipation air duct, and a fan is arranged at one end of the heat dissipation air duct, so that the gas flows from the air inlet end of the heat dissipation air duct to the air outlet end of the heat dissipation air duct, and the gas is flowing During the process, heat is exchanged with the optical fiber disk to dissipate heat from the optical fiber disk. The problem is that after the gas enters the air inlet end, it starts to exchange heat with the fiber optic disk. With the movement of the gas, the temperature of the gas also increases, and the temperature difference between the gas and the fiber optic disk decreases. The heat is reduced; therefore, the part of the optical fiber disk close to the air outlet has a small heat transfer, less heat dissipation, and a higher temperature.

Contents of the invention

The present application provides a heat dissipation assembly and a fiber laser to solve the technical problems of low heat transfer, less heat dissipation and high temperature existing in the prior art at the part of the fiber optic disc near the air outlet.

The present application provides a heat dissipation assembly, which may include: a flow channel, the flow channel may include an inner layer flow channel and an outer layer flow channel arranged side by side; in the length direction of the flow channel, the inner layer flow channel The layer flow channel may include at least two inner layer sub-channels arranged at intervals, and the outer layer flow channel may include at least two outer layer sub-channels arranged at intervals; in the length direction of the flow channel, adjacently arranged The inner layer sub-channels and the outer layer sub-channels may communicate with each other, and the interconnected inner layer sub-channels and the outer layer sub-channels may be located at different positions.

When using the heat dissipation assembly provided by this application, connect the heat dissipation assembly provided by this application to the heat sink, the inner flow channel can be attached to the plate surface of the heat sink, and the outer flow channel can be set far away from the inner flow channel. One side of the part to be radiated; at least one end of the flow channel can be provided with a fluid power source, and the fluid power source makes the cooling medium 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 can first enter 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 enter the downstream second inner layer outer channel from the first outer layer sub-channel, and so on until the medium flows out from the medium outflow end, during this process, the medium in the inner layer channel can be connected with the outer layer channel The medium in the inner flow channel close to the radiated part has a large heat transfer rate, and the temperature difference with the radiated part is small, and the medium in the outer flow channel far away from the radiated part is compared with the medium in the inner flow channel The amount of heat exchange is small, and the temperature difference with the heat-dissipated parts is large. 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 communicate with the downstream flow channel. The radiated part realizes a large amount of heat exchange, so that the heat dissipation of the radiated part is large and the cooling is large, so that the part of the radiated part close to the medium outflow end can have a large heat transfer, a large heat dissipation, a large cooling, and a low temperature. The temperature difference between the two ends of the radiated part can be reduced, which is beneficial to improving the heat dissipation uniformity and temperature uniformity of the radiated part. When the heat-dissipated part is an optical fiber disc, it can naturally make the part of the optical fiber disc close to the medium outflow end have a large heat transfer, large heat dissipation, more cooling, and low temperature, which can be reduced, and then the temperature difference between the two ends of the optical fiber disc can be reduced. , which is conducive to improving the heat dissipation uniformity and temperature uniformity of the optical fiber disk.

Optionally, a baffle may be provided in the flow channel, and the baffle may separate the flow channel to form the inner flow channel and the outer flow channel; the two sides of the baffle may be respectively connected There is a baffle, and the side parts of the baffle away from the partition can all abut against the inner wall of the flow channel, and the baffle in the inner layer flow channel can divide the inner layer flow channel into At least two inner layer sub-channels, the baffle in the outer layer channel can divide the outer layer channel into at least two outer layer sub-channels; There are at least two commutation ports, and the inner layer sub-channel and the outer layer sub-channel can be communicated through the commutation port.

Optionally, the number of sub-channels in the inner layer is the same as the number of sub-channels in the outer layer.

Optionally, the baffle may include 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, adjacent Among the two diversion ports, the upper baffle may be provided upstream of one of the diverter ports, the lower baffle may be provided downstream of the other diverter port, and the two adjacent diverter ports A middle baffle may be provided between them, and for the same diversion port, in the length direction of the flow channel, an upper baffle may be provided on one side of the diversion port, and a lower baffle may be provided on the other side of the diversion port. plate.

Optionally, the heat dissipating assembly may further include a plurality of basic tooth pieces arranged in the inner layer sub-channel, the length direction of the basic tooth pieces may be the same as the length direction of the flow channel, and the plurality of The basic tooth pieces can be arranged at intervals along the width direction of the flow channel; the end of the basic tooth piece close to the commutation port can be arranged on a slope, and in the thickness direction of the flow channel, the basic tooth piece The side close to the separator can be set away from the commutation port.

Optionally, in the thickness direction of the flow channel, one side of the basic tooth piece may be connected to one inner wall of the inner layer sub-channel, and the other side of the basic tooth piece may be connected to the The other inner wall of the inner sub-channel is connected, and a medium flow channel is formed between two adjacent basic tooth pieces

Optionally, a plurality of commutation teeth can be provided at the position of the inner layer sub-channel facing the commutation port, and the length direction of the commutation teeth can be aligned with the length direction of the flow channel. Similarly, along the width direction of the flow channel, a plurality of the commutation teeth can be arranged at intervals; the sides of the commutation teeth close to the partition plate can be arranged on an inclined plane, and on the side of the flow channel In the thickness direction, the side of the commutation tooth piece away from the partition plate may be disposed away from the baffle plate.

Optionally, in the length direction of the flow channel, the number of the flow change ports may be one, and in the width direction of the flow channel, the number of the flow change ports may be multiple; Both sides of the plate can be respectively provided with a said baffle plate, said inner layer sub flow channel can be two, one can be inner layer upstream flow channel, the other can be inner layer downstream flow channel, said outer layer sub flow channel The number of flow channels may be two, one may be an outer layer upstream flow channel, and the other may be an outer layer downstream flow channel.

Optionally, the number of commutation ports can be three, one of which can be an inner and outer commutation port, and the other two can be outer and inner commutation ports, and the inner and outer commutation ports can be located between the two outer and inner commutation ports. Between the ports; the inner layer upstream flow channel can communicate with the outer layer upstream flow channel through the inner and outer flow ports, and the outer layer upstream flow channel can communicate with the inner layer through the outer and inner flow ports Downstream channel communication.

Optionally, the slope of the commutation gear at the inner and outer commutation ports can be arranged face to face with the slope of the basic tooth in the inner upstream flow channel, and the slopes of the internal and external commutation ports A V-shaped channel facing the inner and outer commutation ports may be formed between the slope of the commutation gear and the slope of the basic gear in the inner upstream channel.

Optionally, the slope of the commutation tooth at the outer and inner commutation port can be arranged face to face with the slope of the basic tooth in the inner layer downstream channel, and the slope of the outer and internal commutation port A V-shaped channel facing the outer and inner commutation ports may be formed between the slope of the commutation gear and the slope of the basic gear in the inner downstream channel.

Optionally, in the length direction of the partition, the center of the flow change port may be located at one-half to two-thirds of the partition.

The present application provides a fiber laser. The fiber laser may include a heat dissipation component and the above heat dissipation assembly. The flow channel may be connected to the heat dissipation component, and the outer flow channel may be located at the inner layer of the flow channel The side away from the part to be dissipated.

Optionally, the heat-dissipated part may form a side wall of the flow channel.

Optionally, the flow channel may include a plurality of folded-line pipes sequentially arranged along the width direction of the heat-dissipated part, a part of the same folded-line pipe may be arranged close to the heat-dissipated part, and another part of the folded-line pipe may be disposed close to the heat-dissipated part. A part may be disposed away from the heat-dissipated member.

It is to be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and are not necessarily restrictive of the disclosure. The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate subject matter of the present disclosure. Meanwhile, the specification and drawings serve to explain the principles of the present disclosure.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or prior art. Obviously, the accompanying drawings in the following description The drawings are some implementations of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a heat dissipation assembly according to an embodiment of the present application;

FIG. 2 is an exploded view of the heat dissipation assembly shown in FIG. 1;

Fig. 3 is a structural schematic diagram of a partition in the heat dissipation assembly shown in Fig. 1;

Fig. 4 is a structural schematic diagram of the basic tooth piece and the commutation tooth piece in the heat dissipation assembly shown in Fig. 1;

FIG. 5 is a schematic diagram of the flow path of the fluid in the inner layer flow channel in the heat dissipation assembly shown in 1;

FIG. 6 is a schematic diagram of the flow path of the fluid in the outer channel in the heat dissipation assembly shown in FIG. 1 .

Icon: 10-baffle; 20-inner flow channel; 30-outer flow channel; 40-inner baffle; 50-outer baffle; 80-basic tooth piece; 90-converter tooth piece; 100-radiated parts; 21-upstream flow channel of inner layer; 22-downstream flow channel of inner layer; 31-upstream flow channel of outer layer; 32-downstream flow channel of outer layer 41-inner upper baffle; 42-inner lower baffle; 43-inner middle baffle;

Detailed ways

The technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present application, not all of them.

The components of the embodiments of the application generally described and shown in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application.

Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific orientation construction and operation, therefore should not be construed as limiting the application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

It should be noted that the heat sink provided in the embodiment of the present application can be used, but not limited, to dissipate heat from fiber optic disks, and can also be used to dissipate heat from power supplies and other components that require heat dissipation; it can be used, but not limited to, fiber lasers, and can also Used for other equipment.

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 outflow end. That is, from the medium inlet end to the medium outflow end.

As shown in Figures 1 to 6, the present application provides a heat dissipation assembly, which may include a flow channel, and the flow channel may include an inner layer flow channel 20 and an outer layer flow channel 30 arranged side by side; in the length direction of the flow channel Above, the inner layer channel 20 may include at least two inner layer sub-channels arranged at intervals (at least two inner layer sub-channels are independent of each other and cannot be directly communicated with each other), and the outer layer channel 30 may include at least two Outer layer sub-channels arranged at intervals (at least two outer layer sub-channels are independent of each other and cannot be directly connected to each other); in the length direction of the flow channel, the adjacently arranged inner layer sub-channels and the outer layer The sub-channels can be connected to each other, and the interconnected inner layer sub-channels and outer layer sub-channels can be located in different positions, specifically, one end of the flow channel can be the medium inlet end, and the other end of the flow channel can be the medium outflow end , along the medium conveying direction from the medium inlet end to the medium outflow end, one inner layer sub-channel can communicate with the outer layer sub-channel adjacent to the inner layer sub-channel and located downstream of the inner layer sub-channel, one The outer layer sub-channel can communicate with the inner layer sub-channel adjacent to the outer layer sub-channel and located downstream of the outer layer sub-channel, the flow channel can be used to connect with the heat sink, and the outer layer of the sub-channel It can be located on the side of the inner flow channel away from the part to be radiated.

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 inlet end, can be defined as the first inner layer sub-channel, and other inner layer sub-channels are sorted in sequence, and can be defined as being located at the most upstream That is to say, one outer layer sub-channel located at the medium inlet end is the first outer layer sub-channel, and the other outer layer sub-channels are arranged sequentially; in the medium conveying direction, the first outer layer sub-channel and the second inner layer sub-channel The channels can be adjacent and communicated, and the second inner layer sub-channel can be located downstream of the first outer layer sub-channel, the first inner layer sub-channel can be adjacent to and communicate with the second outer layer sub-channel, and the second The second outer sub-channel may be located downstream of the first inner sub-channel, and so on.

When using the heat dissipation assembly provided in this embodiment, the heat dissipation assembly provided in this embodiment can be connected to the heat sink 100, the inner flow channel 20 can be attached to the plate surface of the heat sink 100, and the outer flow channel 30 can be set The side of the inner layer flow channel 20 away from the heat sink 100; at least one end of the flow channel can be provided with a fluid power source, and the fluid power source makes the cooling medium enter the inner layer flow channel 20 and the outer layer respectively from the medium inlet end of the flow channel. In the laminar flow channel 30. In the medium conveying direction, the medium can first enter 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 enter the downstream second inner outer flow channel from the first outer layer sub-channel, and so on until the medium flows out from the medium outflow end, during this process, the medium in the inner layer flow channel 20 can be connected with the outer layer The medium in the flow channel 30 is exchanged; the medium in the inner flow channel 20 close to the heat sink 100 has a large heat transfer amount, and the temperature difference with the heat sink 100 is small, and the medium in the outer flow channel 30 far away from the heat sink 100 Compared with the medium in the inner layer flow channel 20, the heat exchange rate of the medium is smaller, and the temperature difference with the heat sink 100 is larger. The medium in the inner layer flow channel 20 can exchange with the medium in the outer layer flow channel 30, and the outer layer flow After the medium in the channel 30 enters the inner layer channel 20, it can realize a large amount of heat exchange with the downstream heat sink 100, so that the heat dissipation of the heat sink 100 is large, and the temperature drop is large, so that the heat sink 100 can be close to the medium. The portion at the outflow end has large heat transfer, large heat dissipation, large cooling, and low temperature, thereby reducing the temperature difference between the two ends of the heat sink 100, which is beneficial to improving the heat dissipation uniformity and temperature uniformity of the heat sink 100. When the heat-dissipated part is an optical fiber disc, it can naturally make the part of the optical fiber disc close to the medium outflow end have a large heat transfer, large heat dissipation, more cooling, and low temperature, which can be reduced, and then the temperature difference between the two ends of the optical fiber disc can be reduced. , which is conducive to improving the heat dissipation uniformity and temperature uniformity of the optical fiber disk.

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 blower can be set at the medium inlet end, or an exhaust fan can be set at the medium outflow end, or both can be installed in the medium A blower is set at the inlet end and an exhaust fan is set at the medium outflow end; when the fluid is liquid, a pump and other power parts can be set.

Optionally, the number of sub-channels in the inner layer can be set to be the same as the number of sub-channels in the outer layer, which facilitates processing, facilitates the replacement of channels for the medium, and is more conducive to the uniformity of heat dissipation of the heat sink 100 .

On the basis of the above embodiments, the number of sub-channels in the inner layer can be three, four or five, etc., and correspondingly, the number of sub-channels in the outer layer can be three, four, or five, etc. . In the conveying direction of the medium, the first outer layer sub-channel may be adjacent to and communicated with the second inner layer sub-channel, and the second inner layer sub-channel may be located downstream of the first outer layer sub-channel; The layer sub-channel can be adjacent to and communicated with the second outer layer sub-channel, and the second outer layer sub-channel can be located downstream of the first inner layer sub-channel; the second outer layer sub-channel can be connected to the third inner layer sub-channel. The layer sub-channels are adjacent and connected, and the third inner layer sub-channel may be located downstream of the second outer layer sub-channel; the second inner layer sub-channel and the third outer layer sub-channel may be adjacent and communicated, And the third outer layer sub-channel can be located downstream of the second inner layer sub-channel, and so on, at this time, the two flow paths of the medium can both be wave-shaped.

Optionally, the number of sub-channels in the inner layer can be two, and the number of sub-channels in the outer layer can be two. In the medium conveying direction, the first outer layer sub-channel can be connected to the second inner layer sub-channel. Adjacent and communicated, and the second inner layer sub-channel can be located downstream of the first outer layer sub-channel; the first inner layer sub-channel can be adjacent to and communicated with the second outer layer sub-channel, and the second outer layer sub-channel can The layer sub-channel may be located downstream of the first inner layer sub-channel. At this time, the upstream part of the heat sink 100 (the part near the medium inlet end) may correspond to the first inner layer sub-channel, and the heat sink 100 The downstream part (the part close to the medium outflow end) can correspond to the second inner layer sub-channel; the medium in the first inner layer sub-channel can be transferred to the second outer layer sub-channel and then directly flow to the medium outflow end, the first The medium in the outer layer sub-channel can be transferred to the second inner layer sub-channel and then directly flow to the medium outflow end. This structure, on the one hand, makes the structure of the channel simple, and on the other hand, the medium in the first outer layer sub-channel The amount of heat exchange is small, and there is still a large temperature difference with the downstream part of the radiated part 100, which can exchange heat with the downstream part of the radiated part 100 to a large extent, and can further make the downstream part of the radiated part 100 dissipate more heat. , the temperature is lowered more, and the heat dissipation uniformity and temperature uniformity of the heat sink 100 are further improved.

Wherein, 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 can include a plurality of zigzag pipes arranged in sequence along the width direction of the heat sink 100, a part of the same zigzag pipe It can be arranged close to the heat dissipation part 100, and this part forms the inner layer flow channel 20. The other part of the folded line pipe can be arranged away from the heat dissipation part 100, and this part forms the outer layer flow channel 30. According to the inner layer flow channel 20 and The specific number of the outer flow channels 30 is used to set the number of corners of the zigzag pipeline.

As an alternative, as shown in Figures 1 to 4, a partition 10 can be provided in the flow channel, and the partition 10 can separate the flow channel to form an inner layer flow channel 20 and an outer layer flow channel 30; The two sides can be respectively connected with baffles, and the side of the baffle away from the partition 10 can all abut against the inner wall of the flow channel, and the baffle in the inner layer flow channel 20 can divide the inner layer flow channel 20 into at least two The inner layer sub-channel, the baffle plate in the outer layer channel 30 can divide the outer layer channel 30 into at least two outer layer sub-channels; The flow channel and the sub-channel of the outer layer can be communicated through the commutation port.

In this embodiment, baffles can be set on both sides of the partition 10, that is, an inner baffle 40 can be set in the inner flow channel 20, and an outer baffle 50 can be set in the outer flow channel 30; In the thickness direction of the inner layer baffle 40, one side of the inner layer baffle 40 can be connected with the partition 10, and the other side of the inner layer baffle 40 can be in contact with the inner wall of the inner layer flow channel 20. In the width direction of the flow channel, the inner Both sides of the layer baffle plate 40 can abut against the corresponding inner wall of the inner layer flow channel 20 respectively; similarly, in the thickness direction of the flow channel, one side of the outer layer baffle plate 50 can be connected with the partition plate 10, and the outer layer The other side of the baffle 50 may be in contact with the inner wall of the outer channel 30 , and in the width direction of the channel, both sides of the outer baffle 50 may be in contact with corresponding outer walls of the outer channel 30 .

The inner layer baffle plate 40 can divide the inner layer flow channel 20 into at least two inner layer sub-channels (for example: when two inner layer baffle plates 40 can be arranged at intervals along the length direction of the flow channel, There can be three inner layer sub-flow channels, correspondingly, two outer layer baffles 50 can be arranged at intervals on the dividing plate 10, and there can be three outer layer sub-flow channels; in the same way, the inner layer baffles 40 and the outer layer When there can be three baffle plates 50, there can be four sub-channels in the inner layer and four sub-channels in the outer layer).

The flow channel structure of this structure is further simple; on the other hand, in the width direction of the flow channel, the inner sub-flow channel on one side of the partition 10 can be continuous, and the outer layer sub-flow on the other side of the partition 10 The channel can also be continuous, then in the width direction of the radiated part 100, the inner layer sub-channel and the radiated part 100 can be continuously abutted, so that the heat exchange between the inner layer sub-channel and the radiated part 100 can be improved. Uniform, similarly, the heat exchange between the outer layer flow channel 30 and the inner layer flow channel 20 is uniform. Optionally, the width of the inner layer sub-channel is not smaller than the width of the heat sink 100 , and the width of the outer layer sub-channel is the same as that of the inner layer sub-channel.

Specifically, the baffle may include an upper baffle, a lower baffle, and a middle baffle connected between the upper baffle and the lower baffle; An upper baffle can be provided upstream of the flow opening, a lower baffle can be provided downstream of the other flow opening, and a middle baffle can be provided between two adjacent flow openings, and for the same flow opening, the In the length direction of the flow channel, an upper baffle may be provided on one side of the flow change port, and a lower baffle may be provided on the other side of the flow change port. Preferably, the baffle can be arranged at the edge of the commutation port.

It can also be understood that the inner baffle 40 can include an upper inner baffle 41 , an inner lower baffle 42 and an inner middle baffle 43 , and one end of the inner middle baffle 43 can be connected to the inner upper baffle 41 , the other end of the baffle plate 43 in the inner layer can be connected with the lower baffle plate 42 of the inner layer; One end of the middle baffle 53 can be connected with the upper baffle 51 of the outer layer, and the other end of the middle baffle 53 of the outer layer can be connected with the lower baffle 52 of the outer layer; In the flow port, in the inner layer flow channel 20, an upper inner layer baffle 41 can be provided on the upper edge of the first flow change port (along the medium conveying direction, the upstream direction is upward), and the lower edge of the second flow change port can be The inner lower baffle 42 is set, and the inner middle baffle 43 can be arranged between the two commutation ports. Correspondingly, in the outer channel 30, the lower edge of the first commutation port can be provided with an outer lower baffle Plate 52, the upper edge of the second commutation port can be provided with an outer upper baffle 51, an outer middle baffle 53 can be arranged between the two commutation ports, and the middle baffles of the baffles can be placed between two adjacent The diverter ports are isolated in the width direction of the flow channel, that is, the inner baffle 40 may include at least one Z-shaped plate segment, and the outer baffle 50 may include at least one Z-shaped plate segment.

The upper baffle located on the upper edge of the commutation port can prevent the medium from passing through the corresponding commutation port, and the lower baffle located on the lower edge of the commutation port can promote the medium to pass through the corresponding commutation port; thus, the medium in the inner sub-channel can Change the way to flow into the corresponding outer sub-channel through the second commutation port; the medium in the outer sub-channel can flow into the corresponding inner sub-channel through the first commutation port; that is, two adjacent commutation channels One of the mouths can be the internal and external commutation port 60 for the medium used in the inner layer sub-channel to transfer to the outer layer sub-channel, and the other can be the outer port 60 for the medium used in the outer layer sub-channel to transfer to the inner layer sub-channel. The inner commutation port 70 realizes the mutual exchange of the medium of the inner layer flow channel 20 and the medium of the outer layer flow channel 30 .

Wherein, the flange of the diverter 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 on the partition by welding, threaded connection or adhesive bonding. Plate 10 or the inner wall of the flow channel.

The number of baffles on one side of the separator 10 can be equal to the number of flow change ports in the length direction of the flow channel, for example: in the length direction of the flow channel, when the number of flow change ports can be two, the inner layer block The number of plates 40 can be two, then the number of inner layer sub-runners can be three, the number of outer layer baffles 50 can be two, the number of outer layer sub-runners can be three, etc., and so on .

As an alternative, the number of sub-channels in the inner layer can be two, and the number of sub-channels in the outer layer can be two, that is, the number of inner baffles 40 and the number of outer baffles 50 can be both One, correspondingly, in the length direction of the flow channel, the number of commutation ports can be one (at the same position in the width direction of the flow channel, that is, in the length direction of the flow channel, one commutation port has no positive For another flow change port provided), a baffle plate can be provided on both sides of the partition plate 10, and there can be two inner layer sub-flow channels, one can be the inner layer upstream flow channel 21, and the other can be the inner layer For the downstream flow channel 22 , the number of the outer layer sub-channels may be two, one may be the outer layer upstream flow channel 31 , and the other may be the outer layer downstream flow channel 32 . The corresponding beneficial effects have been described above and will not be repeated here.

Wherein, in the width direction of the runner, the quantity of the flow change port can be two, that is, one inner and outer flow change port 60 and one outer and inner flow change port 70 are set; or the number of flow change ports can be four, one The inner and outer commutation ports 60 and one outer and inner commutation port 70 may be arranged alternately with each other.

As an optional solution, the number of commutation ports can be three, one of which can be the inner and outer commutation ports 60, and the other two can be the outer and inner commutation ports 70, and the inner and outer commutation ports 60 can be located in the two outer and inner commutation ports. Between the commutation ports 70; the inner upstream channel 21 can communicate with the outer upstream channel 31 through the inner and outer commutation ports 60, and the outer upstream channel 31 can communicate with the inner downstream channel 22 through the outer and inner commutation ports 70 connected.

In this embodiment, the medium in the upstream channel 21 of the inner layer can gather toward the internal and external commutation ports 60 located in the middle, and enter the downstream channel 32 of the outer layer through the internal and external commutation ports 60, and the medium enters the downstream channel 32 of the outer layer and then Diffuse in all directions of the downstream flow channel 32 of the outer layer, and the medium is transported to the medium outflow end as a whole; the medium of the upstream flow channel 31 of the outer layer can be divided into two paths at the inner-to-outer flow port, and the medium of one line can pass through an outer-inner flow port 70 intervenes in the downstream channel 22 of the inner layer, and the other channel of medium can enter the downstream channel 22 of the inner layer through another outer-inner commutation port 70, and the two channels of media can merge into the downstream channel 22 of the inner layer, and together with the heat sink 100 Heat exchange in the downstream part, this structure can make the lower temperature medium in the outer layer upstream flow channel 31 quickly enter the inner layer downstream flow channel 22, speed up the heat exchange between this part of the medium and the radiated part 100, thereby improving the heat dissipation of the radiated part 100 efficiency.

Wherein, the position of the diversion port on the partition plate 10 can be set as required, for example: the center of the diversion port can be located at one-half to two-thirds of the partition plate 10 (for example: one-half, twelve Seven-thirds or two-thirds, etc.), after the assembly is completed, the distance between the commutation port and the medium inlet end of the partition plate 10 can be one-half to two-thirds of the length of the partition plate 10. The medium in the upstream channel 31 of the outer layer will also exchange heat during transportation, and the temperature will increase. The above structure can ensure the heat dissipation effect of the heat sink 100 .

As shown in Figures 2 to 6, on the basis of the above-mentioned embodiments, optionally, the heat dissipation assembly may also include a plurality of basic tooth pieces 80 arranged in the inner sub-flow channel, and the length direction of the basic tooth pieces 80 may be consistent with the The length direction of the flow channel is the same, and a plurality of basic tooth pieces 80 can be arranged at intervals along the width direction of the flow channel; the end of the basic tooth piece 80 close to the commutation port can be arranged on a slope, and in the thickness direction of the flow channel, the basic tooth A side of the sheet 80 close to the separator 10 may be disposed away from the commutation port.

In this embodiment, a basic tooth piece 80 can be provided in the inner layer flow channel 20, and in the thickness direction of the flow channel, one side of the basic tooth piece 80 can be connected with the inner wall of one side of the inner layer sub-flow channel, and the basic tooth piece The other side of 80 can be connected with the inner wall of the other side of the inner layer sub-channel, and a medium flow channel can be formed between two adjacent basic tooth pieces 80; multiple basic tooth pieces 80 can improve the strength of the inner layer sub-channel , It can also increase the heat exchange area of the medium, thereby improving the heat exchange efficiency, and can also disturb the flow direction of the medium, making the medium turbulent, improving the heat exchange effect, thereby improving the heat dissipation effect of the heat sink. A slope can be set at the end of the basic tooth piece 80 near the commutation port, so that a plurality of basic tooth plates 80 can form gaps at the commutation port, so that multiple medium circulation channels can communicate with each other, so that the medium can be collected or flowed around. diffusion.

As shown in Fig. 2 to Fig. 6, on the basis of the above-mentioned embodiments, optionally, a plurality of commutation teeth 90 may be provided at the position of the inner layer sub-channel facing the commutation port, and the commutation teeth The length direction of 90 can be the same as the length direction of the flow channel, along the width direction of the flow channel, a plurality of commutation teeth 90 can be arranged at intervals; the side of the commutation teeth 90 close to the separator 10 can be arranged on a slope, and In the thickness direction of the flow channel, the side of the commutation tooth piece 90 away from the partition plate 10 can be set away from the baffle plate (specifically, along the medium conveying direction: in the inner layer flow channel, the lower edges of the inner and outer commutation ports can be set Inner layer lower baffle plate, inner layer upper baffle plate can be set on the upper edge of outer and inner commutation port; The outer lower baffle can be set). In this embodiment, the commutation gear 90 can improve the strength of the inner channel 20 at the commutation port and improve the heat exchange effect at the commutation port. The notch on one side of the commutation tooth 90 can realize the collection or diffusion of the medium.

Specifically, as shown in FIG. 5 , the slope of the commutation gear 90 at the inner and outer commutation ports 60 can be arranged face to face with the slope of the basic gear 80 in the inner upstream channel 21 , forming a V-shaped channel between the two. , the opening of the V-shaped channel can face the inner and outer commutation ports 60; as shown in FIG. The inclined surfaces are arranged facing each other, and a V-shaped channel can be formed between them, and the opening of the V-shaped channel can face the outer-inner commutation port 70 .

The embodiment of the present application also provides a fiber laser. The fiber laser can include a heat sink 100 and a heat dissipation assembly of any of the above-mentioned technical solutions. The flow channel can be connected to the heat sink 100, and the outer flow channel 30 can be located at The side of the inner flow channel 20 away from the heat sink 100 . The fiber laser in this embodiment may include the heat dissipation component of any of the above technical solutions, and thus has all the beneficial technical effects of the heat dissipation component, which will not be repeated here.

Wherein, the flow channel may independently include a plurality of side plates connected end to end in sequence, and the flow channel may be installed on the heat sink 100 as an independent component.

As an alternative, the heat-dissipated part 100 can form a side wall of the flow channel, that is, one side plate of the flow channel can be the heat-dissipated part 100, and the medium in the inner layer flow channel 20 can directly contact the heat-dissipated part The 100 contact can improve the heat exchange efficiency and heat exchange effect, thereby improving the heat dissipation efficiency and heat dissipation effect of the radiated part 100 . For example, the heat-dissipated part 100 may be a fiber optic disk, the flow channel may be connected to the fiber optic disk, and the fiber optic disk may directly serve as a side wall of the flow channel.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit it; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present application. scope. In the description provided herein, numerous specific details are set forth. However, it is understood that the embodiments of the application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure the understanding of this description. In addition, those skilled in the art will appreciate that although some embodiments herein include some features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the present application. And form different embodiments.

Industrial Applicability

The present application relates to the technical field of fiber laser heat dissipation, in particular to a heat dissipation component and a fiber laser. The heat dissipation assembly includes: a flow channel, the flow channel includes an inner layer flow channel and an outer layer flow channel arranged side by side; in the length direction of the flow channel, the inner layer flow channel includes at least two inner layer sub-channels arranged at intervals , the outer layer flow channel includes at least two outer layer sub-channels arranged at intervals; in the length direction of the flow channel, the adjacent inner layer sub-channels and outer layer sub-channels communicate with each other, and the interconnected inner layer Sub-runners and outer sub-runners are in different positions. The heat dissipation assembly provided by the present invention can make the part of the heat-dissipated part close to the medium outflow end have a large heat transfer amount, a large heat dissipation, a large temperature drop, and a low temperature, thereby reducing the temperature difference between the two ends of the heat-dissipated part, which is conducive to improving Heat dissipation uniformity and temperature uniformity of the heat sink.

In addition, it can be understood that the heat dissipation assembly and fiber laser of the present application are reproducible and can be applied in various industrial applications. For example, the heat dissipation assembly and the fiber laser of the present application can be used in any field requiring heat dissipation.

Claims

A heat dissipation assembly, characterized in that it includes: a flow channel, the flow channel includes an inner layer flow channel and an outer layer flow channel arranged side by side; in the length direction of the flow channel, the inner layer flow channel includes at least Two inner layer sub-channels arranged at intervals, the outer layer channel includes at least two outer layer sub-channels arranged at intervals, the adjacently arranged inner layer sub-channels and the outer layer sub-channels are mutually The inner layer sub-channels and the outer layer sub-channels that communicate with each other are located at different positions.
The heat dissipation assembly according to claim 1, wherein a baffle is provided in the flow channel, and the baffle separates the flow channel to form 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 far away from the partition are in contact with the inner wall of the flow channel, and the baffles in the inner layer flow channel connect the The inner channel is divided into at least two inner sub-channels, and the baffle in the outer channel divides the outer channel into at least two outer sub-channels; At least two diversion ports are arranged on the separator, and the inner layer sub-channel and the outer layer sub-channel are communicated through the diversion ports.
The heat dissipation assembly according to claim 2, wherein the number of the inner layer sub-channels is the same as the number of the outer layer sub-channels.
The heat dissipation assembly according to claim 2 or 3, wherein 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 separator, among the two adjacent diversion ports, the upper baffle is provided upstream of one diversion port, and the lower baffle is provided downstream of the other diversion port, An intermediate baffle is provided between two adjacent flow ports, and for the same flow port, in the length direction of the flow channel, an upper baffle is provided on one side of the flow port, and an upper baffle is provided on one side of the flow port. The other side is provided with a lower baffle.
The heat dissipation assembly according to any one of claims 2 to 4, characterized in that, the heat dissipation assembly further comprises a plurality of basic tooth pieces arranged in the inner layer sub-channel, and the length of the basic tooth pieces is The direction is the same as the length direction of the flow channel, and a plurality of the basic tooth pieces are arranged at intervals along the width direction of the flow channel; In the thickness direction of the flow channel, the side of the basic tooth piece close to the partition plate is arranged away from the commutation port.
The heat dissipation assembly according to claim 5, characterized in that, in the thickness direction of the flow channel, one side of the basic tooth piece is connected to the inner wall of one side of the inner layer sub-flow channel, and the basic tooth The other side of the sheet is connected to the inner wall of the other side of the sub-channel in the inner layer, and a medium circulation channel is formed between two adjacent basic tooth sheets.
The heat dissipating assembly according to claim 5 or 6, characterized in that, a plurality of commutation teeth are provided at the position of the inner layer sub-channel facing the commutation port, and the commutation teeth are The length direction is the same as the length direction of the flow channel, and along the width direction of the flow channel, a plurality of the commutation teeth are arranged at intervals; the sides of the commutation teeth close to the partition are arranged on an inclined plane , and in the thickness direction of the flow channel, the side of the commutation tooth piece away from the separator is arranged away from the baffle.
The heat dissipation assembly according to claim 7, characterized in that, in the length direction of the flow channel, the number of the flow change ports is one, and in the width direction of the flow channel, the number of the flow change ports is The number is multiple; each side of the partition is provided with a baffle plate, and the inner layer sub-flow channel is two, one is the inner layer upstream flow channel, and the other is the inner layer downstream flow channel, so The number of sub-channels in the outer layer is two, one is the upstream channel of the outer layer, and the other is the downstream channel of the outer layer.
The heat dissipation assembly according to claim 8, characterized in that, there are three commutation ports, one of which is an internal and external commutation port, and the other two are external and internal commutation ports, and the internal and external commutation ports are located between two between the outer and inner commutation ports; the inner upstream channel communicates with the outer upstream channel through the inner and outer commutation ports, and the outer upstream channel communicates with the outer upstream channel through the outer and inner commutation ports The downstream channel of the inner layer is connected.
The heat dissipation assembly according to claim 9, characterized in that, the inclined surface of the commutation tooth at the inner and outer commutation ports is arranged face to face with the inclined surface of the basic tooth in the upstream channel of the inner layer, so A V-shaped channel facing the inner and outer commutation ports is formed between the slope of the commutation gear at the inner and outer commutation ports and the slope of the basic tooth in the inner upstream channel.
The heat dissipation assembly according to claim 9 or 10, characterized in that, the slope of the commutation tooth at the outer and inner commutation ports faces the slope of the basic tooth in the downstream channel of the inner layer It is set that a V-shaped channel facing the outer and inner commutation ports is formed between the slope of the commutation tooth at the outer and inner commutation port and the slope of the basic tooth in the inner layer downstream channel .
The heat dissipation assembly according to claim 9, characterized in that, in the length direction of the partition, the center of the flow opening is located at one-half to two-thirds of the partition.
A fiber laser, characterized in that it includes a heat sink and the heat dissipation assembly according to any one of claims 1-12, the flow channel is connected to the heat sink, and the outer flow channel It is located on the side of the inner flow channel away from the heat sink.
The fiber laser according to claim 13, wherein the heat-dissipated member forms a side wall of the flow channel.
The heat dissipating assembly according to claim 13 or 14, wherein the flow channel comprises a plurality of broken-line pipes arranged in sequence along the width direction of the heat-dissipated part, and a part of the same broken-line pipe is close to the heat-dissipated part. The other part of the zigzag pipe is set away from the heat sink.