CN113376761A - Optical module heat dissipation device and optical module - Google Patents
Optical module heat dissipation device and optical module Download PDFInfo
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- CN113376761A CN113376761A CN202110441509.XA CN202110441509A CN113376761A CN 113376761 A CN113376761 A CN 113376761A CN 202110441509 A CN202110441509 A CN 202110441509A CN 113376761 A CN113376761 A CN 113376761A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4266—Thermal aspects, temperature control or temperature monitoring
- G02B6/4268—Cooling
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Abstract
The invention discloses an optical module heat dissipation device and an optical module, belonging to the technical field of optical communication, and comprising a cage, a shell and an airflow channel formed on the outer side of a heat dissipation plate, wherein the cage is provided with an air inlet, an air outlet and a first hollow part, and the first hollow part is communicated with the air inlet and the air outlet; the shell is arranged in the first hollow part and is provided with a second hollow part for mounting a heating device and a heat dissipation plate surrounding the second hollow part; the two ports of the airflow channel are respectively an introducing port and an outlet guide port, the introducing port is in butt joint with the air inlet, the outlet guide port is in butt joint with the air outlet, and the caliber of at least part of the position of the airflow channel is smaller than the calibers of the introducing port and the outlet guide port. The invention achieves the technical effect of improving the heat dissipation effect.
Description
Technical Field
The invention belongs to the technical field of optical communication, and particularly relates to an optical module heat dissipation device and an optical module.
Background
Optical communication is a communication method using light waves as carriers. The optical module plays an important role in the optical fiber communication process, and with the rapid development of the optical communication technology, high-power devices are increasingly used in communication equipment, so that a large amount of heat can be generated during communication, and the normal operation of optical communication is influenced.
At present, in the existing optical communication technology, communication equipment is usually placed at a ventilation position and cooled naturally, if the communication equipment is in operation, when external low-temperature airflow flows across the surface of the communication equipment, the low-temperature airflow can absorb heat generated by a high-speed module in the communication equipment, and the heat generated by the high-speed module in the communication equipment is discharged to the outside, so that the heat dissipation and cooling effects can be obtained. However, the process of natural cooling is slow, the integration level of the module in the communication device is high, the space of the module structure is compact, and the natural cooling process cannot rapidly cool the heat source of the communication device, so that the heat dissipation effect is poor, and the long-term stable use of the communication device is not facilitated.
As described above, the conventional optical communication technology has a problem of poor heat dissipation effect.
Disclosure of Invention
The invention aims to solve the technical problem that the existing optical communication technology has poor heat dissipation effect.
In order to solve the above technical problem, the present invention provides an optical module heat dissipation device, including: a cage provided with an air inlet, an air outlet and a first hollow portion communicating the air inlet and the air outlet; the shell is arranged in the first hollow part, and is provided with a second hollow part for mounting a heating device and a heat dissipation plate surrounding the second hollow part; an airflow channel is formed on the outer side of the heat dissipation plate, two ports of the airflow channel are respectively an inlet and an outlet, the inlet is in butt joint with the air inlet, the outlet is in butt joint with the air outlet, and the aperture of at least part of the airflow channel is smaller than the apertures of the inlet and the outlet.
Furthermore, at least one fin is arranged on the outer side of the heat dissipation plate, the fin extends along the length direction of the airflow channel, and the fin divides the outer side of the heat dissipation plate into at least two airflow channels.
Furthermore, the airflow channel comprises a first flow guide section and a second flow guide section, the first flow guide section is connected with one end of the second flow guide section, the first flow guide section is communicated with the introducing port, the second flow guide section is communicated with the outlet, and the calibers of at least part of the first flow guide section and the second flow guide section are smaller than the calibers of the introducing port and the outlet.
Further, the minimum aperture of the first flow guide section is larger than that of the second flow guide section, and the length of the first flow guide section is smaller than that of the second flow guide section.
Further, the inner surface of the first flow guide section is smooth, and the inner surface of the second flow guide section is smooth.
Furthermore, the first diversion section and the second diversion section are formed by connecting a gradually-reduced section and a gradually-expanded section, the gradually-reduced section is gradually reduced along the airflow direction, the gradually-expanded section is gradually expanded, the inlet is a port of the first diversion section, and the outlet is a port of the second diversion section.
Further, the maximum aperture of the tapered section of the first flow guide section is larger than the maximum aperture of the tapered section of the second flow guide section, and the maximum aperture of the gradually expanded section of the first flow guide section is larger than the maximum aperture of the gradually expanded section of the second flow guide section.
Further, the apparatus further comprises: the radiating fin is attached to the inner side of the radiating plate; and the heat conduction gasket is clamped between the heating device and the radiating fin.
Further, the material of the heat sink is graphite material.
According to another aspect of the present invention, the present invention further provides an optical module including a heat generating device disposed in the second hollow portion.
Has the advantages that:
the invention provides an optical module heat dissipation device.A shell is arranged in a first hollow part in a cage, the first hollow part of the cage is communicated with an air inlet and an air outlet, and the shell is provided with a second hollow part for mounting a heating device and a heat dissipation plate for enclosing the second hollow part. An airflow channel is formed on the outer side of the heat dissipation plate, two ports of the airflow channel are respectively an inlet and an outlet, the inlet of the airflow channel is in butt joint with the air inlet, the outlet of the airflow channel is in butt joint with the air outlet, and the aperture of at least part of the airflow channel is smaller than the apertures of the inlet and the outlet. Therefore, the external cold gas enters from the air inlet, the flow rate of the gas can be increased in the process of passing through the inlet and the outlet of the airflow channel, and then the gas is discharged from the air outlet, so that the heat is rapidly discharged, the heat dissipation efficiency is improved, and the long-term stable use of the communication equipment is facilitated. Thereby the technical effect that the heat dissipation effect can be improved is achieved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a first schematic diagram of an optical module heat dissipation device according to an embodiment of the present invention;
fig. 2 is a second schematic diagram of an optical module heat dissipation device according to an embodiment of the present invention;
fig. 3 is a third schematic diagram of an optical module heat dissipation device according to an embodiment of the present invention;
fig. 4 is a fourth schematic diagram of an optical module heat dissipation device according to an embodiment of the present invention.
Detailed Description
The invention discloses an optical module heat dissipation device.A shell 2 is arranged in a first hollow part 13 in a cage 1, the first hollow part 13 of the cage 1 is communicated with an air inlet 11 and an air outlet 12, and the shell 2 is provided with a second hollow part 23 for mounting a heating device 4 and a heat dissipation plate 20 surrounding the second hollow part 23. An airflow passage is formed on the outer side of the heat dissipation plate 20, the two ports of the airflow passage are respectively an inlet 62 and an outlet 63, the inlet 62 of the airflow passage is connected with the air inlet 11, the outlet 63 of the airflow passage is connected with the air outlet 12, and the aperture of at least part of the airflow passage is smaller than the apertures of the inlet 62 and the outlet 63. Therefore, the external cold gas enters from the air inlet 11, the flow rate of the gas is increased in the process of passing through the inlet 62 and the outlet 63 of the airflow channel, and then the gas is discharged from the air outlet 12, so that the heat is rapidly discharged, the heat dissipation efficiency is improved, and the long-term stable use of the communication equipment is facilitated. Thereby the technical effect that the heat dissipation effect can be improved is achieved.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention; the "and/or" keyword referred to in this embodiment represents sum or two cases, in other words, a and/or B mentioned in the embodiment of the present invention represents two cases of a and B, A or B, and describes three states where a and B exist, such as a and/or B, which represents: only A does not include B; only B does not include A; including A and B.
Also, in embodiments of the invention where an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the present invention.
To explain the heat sink of the optical module in detail, the technical terms in the embodiments of the present invention are explained as follows:
example one
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, an embodiment of the invention provides an optical module heat sink, where the optical module heat sink includes a cage 1, a housing 2, and an airflow channel formed on an outer side of a heat dissipation plate 20, and the cage 1, the housing 2, and the airflow channel formed on the outer side of the heat dissipation plate 20 are described in detail:
for cage 1:
the cage 1 is provided with an air inlet 11, an air outlet 12 and a first hollow 13, the first hollow 13 communicating the air inlet 11 with the air outlet 12, the first hollow 13 being located between the air inlet 11 and the air outlet 12.
Specifically, the cage 1 may be a cage for housing the optical module, and the first hollow portion 13 of the cage 1 may have a space for housing the following housing 2, PCB 3, heat generating device 4, heat conductive gasket 51, heat sink 52, M first fins 53, and second fins 54 as many as the M first fins 53. The air inlet 11 and the air outlet 12 of the cage 1 are oppositely arranged at two ends of the first hollow portion 13, and those skilled in the art can understand that, in the embodiment of the present invention, the shape of the cage 1 is not limited, and the whole cage 1 may be in a rectangular parallelepiped shape or a square shape. It is only necessary to realize the shape of the cage 1 capable of accommodating the following housing 2, PCB 3, heat generating device 4, heat conductive gasket 51, heat sink 52, M first fins 53, and the same number of second fins 54 as the M first fins 53. In the present invention, the shape of the cage 1 is preferably a rectangular parallelepiped, that is, in six faces of the rectangular parallelepiped, as shown in fig. 4, the left face is the air inlet 11, the right face is the air outlet 12, the front face, the rear face and the upper face form concave grooves, and the shape of the upper face and the first rib 53 described below are matched with each other such that a passage from the air inlet 11 to the first air outlet 533 is formed in the cage 1 by hermetically connecting the first air inlet 531 to the upper face in each of the first ribs 53 described below, the first intermediate portion 532 to the upper face in each of the first ribs 53, and the first air outlet 533 to the upper face in each of the first ribs 53. The shape of the upper side face and the second ribs 54 described below are matched with each other by hermetically connecting the second air inlet portion 541 to the upper side face in each of the second ribs 54 described below, the second intermediate portion 542 to the upper side face in each of the second ribs 54, and the second air outlet portion 543 to the upper side face in each of the second ribs 54, to form a passage from the second air inlet portion 541 to the air outlet 12 in the cage 1. Thus, the gas enters from the gas inlet 11, passes through the first gas inlet portion 531, the first middle portion 532, the first gas outlet portion 533, the second gas inlet portion 541, the second middle portion 542 and the second gas outlet portion 543 in sequence, and is then discharged from the gas outlet 12; alternatively, the gas enters from the gas outlet 12, passes through the second gas outlet portion 543, the second intermediate portion 542, the second gas inlet portion 541, the first gas outlet portion 533, the first intermediate portion 532, and the first gas inlet portion 531 in this order, and is discharged from the gas inlet 11. It will be understood by those skilled in the art that, in the embodiment of the present invention, the shape of the gas inlet 11 and the gas outlet 12 is not limited, and the gas inlet 11 may be square, circular, etc., and it is only necessary to implement that the first gas inlet portion 531 of the first rib 53 is disposed at the gas inlet 11, and the gas can be discharged from the gas inlet 11 through the first gas inlet portion 531, the first middle portion 532, the first gas outlet portion 533, the second gas inlet portion 541, the second middle portion 542, and the second gas outlet portion 543, or the gas can be discharged from the gas outlet 12 through the second gas outlet portion 543, the second middle portion 542, the second gas inlet portion 541, the first gas outlet portion 533, the first middle portion 532, and the first gas inlet portion 531, and then the gas inlet 11. The air outlet 12 may also be square, circular, etc., and it is only necessary to implement a fan, described below, at the air outlet 12, through which air can pass.
For the housing 2:
the case 2 is provided inside the first hollow portion 13 of the cage 1, and the case 2 has a second hollow portion 23 in which the heat generating component 4 is mounted and a heat radiating plate 20 surrounding the second hollow portion 23. The heat dissipation plate 20 includes a heat dissipation surface 21 and a mounting surface 22, the heat dissipation surface 21 and the mounting surface 22 of the heat dissipation plate 20 are oppositely disposed on both sides of the second hollow portion 23, the mounting surface 22 of the heat dissipation plate 20 is located near the PCB 3 described below, and the heat dissipation surface 21 of the heat dissipation plate 20 is located far from the PCB 3.
Specifically, the second hollow portion 23 of the case 2 has a space for accommodating the PCB 3, the heat generating device 4, the heat conductive gasket 51, the heat sink 52, the M first fins 53, and the second fins 54, which are the same in number as the M first fins 53, described below, and the heat sink plate 20 of the case 2 surrounds the second hollow portion 23. It will be understood by those skilled in the art that, in the embodiment of the present invention, the shape of the casing 2 is not limited, and the casing 2 may be a rectangular parallelepiped or a square. It is only necessary to realize a shape of the housing 2 capable of accommodating the PCB 3, the heat generating device 4, the heat conductive gasket 51, the heat sink 52, the M first fins 53, the second fins 54 as many as the M first fins 53, and to dispose the first air inlet portion 531 in each first fin 53, the first intermediate portion 532 in each first fin 53, the first air outlet portion 533 in each first fin 53, the second air inlet portion 541 in each second fin 54, the second intermediate portion 542 in each second fin 54, and the second air outlet portion 543 in each second fin 54, which are described below, in the gap between the heat radiating surface 21 and the first hollow portion 13 of the housing 2.
In the present invention, the shape of the case 2 is preferably a rectangular parallelepiped, that is, among six faces of the rectangular parallelepiped, as shown in fig. 2, the upper side face is the heat radiating face 21 of the heat radiating plate 20, and the lower side face is the mounting face 22 of the heat radiating plate 20, and the shape of the heat radiating face 21 is matched with the shape of the first fins 53 by providing the first air intake portion 531, the first intermediate portion 532, and the first air outlet portion 533 in each of the first fins 53 described below on the heat radiating face 21; the shape of the heat dissipating surface 21 is also matched with the shape of the second fins 54, that is, a second air inlet portion 541, a second intermediate portion 542, and a second air outlet portion 543 of each of the second fins 54 described below are provided on the heat dissipating surface 21, so that a passage through which air is introduced from the air inlet 11, passed through the first air inlet portion 531, the first intermediate portion 532, the first air outlet portion 533, the second air inlet portion 541, the second intermediate portion 542, and the second air outlet portion 543, and then discharged from the air outlet 12 is formed between the first hollow portion 13 of the cage 1 and the heat dissipating surface 21 of the housing 2, or a passage through which air is introduced from the air outlet 12, passed through the second air outlet portion 543, the second air outlet portion 542, the second air inlet portion 541, the first air outlet portion 533, the first intermediate portion 532, and the first air inlet portion 531, and then discharged from the air inlet 11 is formed. The shape of the heat radiating surface 21 is also matched with the shape of the heat radiating fin 52, that is, the heat radiating fin 52 is bonded to the heat radiating surface 21, thereby transferring the heat in the heat radiating fin 52 to the heat radiating surface 21. The shape of the mounting surface 22 of the housing 2 is matched with the PCB 3, that is, the position of the PCB 3 is fixed by arranging the PCB 3 on the mounting surface 22, the support force is provided for the heat generating device 4 arranged on the PCB 3, and the position of the heat generating device 4 is fixed. In the invention, the shape of the mounting surface 22 is preferably a groove shape matched with the PCB 3, so that the PCB 3 is fixed inside the groove by the convex shape at the periphery of the groove, and the position of the PCB 3 can be more firmly fixed.
For the PCB board 3 and the heat generating device 4:
the PCB 3 is arranged on the mounting surface 22, the PCB 3 is positioned inside the second hollow portion 23, the heating device 4 is arranged on the PCB 3, and the heating device 4 is positioned inside the second hollow portion 23.
Specifically, the PCB 3 is a printed circuit board, and the PCB 3 is a support for electronic components and is a carrier for electrically interconnecting the electronic components. The heating device 4 is an optical module device, which is composed of optoelectronic elements, a functional circuit, an optical interface and the like, the optical module device is an integrated module for converting optical signals into electrical signals and converting the electrical signals into optical signals, and the optical module device can generate a large amount of heat in work. The PCB 3 and the heating device 4 are matched, namely the PCB 3 is arranged on the mounting surface 22, the heating device 4 is arranged on the PCB 3, the position of the PCB 3 is fixed, and the PCB 3 and the heating device 4 are fixed in the second hollow part 23.
For the air flow passage formed outside the heat dissipation plate 20:
by attaching the following M first fins 53 and the same number of second fins 54 as the M first fins 53 to the heat dissipating surface 21 of the heat dissipating plate 20, an airflow passage can be formed outside the heat dissipating plate 20, where two ports of the airflow passage are an inlet port 62 and an outlet port 63, respectively, the inlet port 62 is an airflow inlet port between the first air inlet portions 531 of the following two adjacent first fins 53, and the outlet port 63 is an airflow outlet port between the following two second air outlet portions 543 of the following two adjacent second fins 54. The inlet 62 is connected with the air inlet 11, the outlet 63 is connected with the air outlet 12, and the aperture of at least part of the air flow channel is smaller than the apertures of the inlet 62 and the outlet 63. At least one fin, which may be a unitary fin integrally formed by a first fin 53 and a corresponding second fin 54 described below, is provided on the outer side of the heat radiating plate 20. The fins extend along the length of the air flow channel and divide the outer side of the heat sink 20 into at least two air flow channels, for example, by channel X1Channel X2Channel X3Channel Y1Channel Y2And channel Y3One of the airflow channels is formed.
Meanwhile, the airflow channel includes a first flow guiding section 6 and a second flow guiding section 61, and the first flow guiding section 6 includes a channel X1Channel X2And channel X3The second flow guiding section 61 includes the following passage Y1Channel Y2And channel Y3The first flow guiding section 6 is connected with one end of the second flow guiding section 61, namely the first flow guiding section is connected with one end of the second flow guiding section through a channel X3And channel Y1Are communicated with each other. The first flow guiding section 6 is communicated with the introducing port 62, the second flow guiding section 61 is communicated with the leading-out port 63, and the caliber of at least part of the first flow guiding section 6 and the second flow guiding section 61 is smaller than the calibers of the introducing port 62 and the leading-out port 63. For example by increasing the cross-sectional diameter of the first air intake portion 531 in order in the direction toward the first intermediate portion 532,the cross-sectional diameters of the first intermediate portions 532 decrease in sequence in the direction toward the first air outlet portion 533, the cross-sectional diameters of the second air inlet portions 541 increase in sequence in the direction toward the second intermediate portions 542, the cross-sectional diameters of the second intermediate portions 542 decrease in sequence in the direction toward the second air outlet portion 543, and the maximum distance between two adjacent second intermediate portions 542 is smaller than the maximum distance between two corresponding first intermediate portions 532, so that the apertures of the channels through which the air flows first gradually decrease and then gradually increase in the direction toward which the air flows enter, that is, the apertures at both ends of the channels are larger than the apertures at the intermediate positions.
In addition, the minimum aperture of the first guide section 6 is larger than that of the second guide section 61, and the length of the first guide section 6 is smaller than that of the second guide section 61. The inner surface of the first flow guiding section 6 is rendered smooth, i.e. the following passage X1Channel X2And channel X3The inner walls of (a) each take on a curved shape and are smooth. The inner surface of the second flow guiding section 61 is rendered smooth, i.e. the following passage Y1Channel Y2And channel Y3The inner walls of (a) each take on a curved shape and are smooth. The first flow guiding section 6 and the second flow guiding section 61 are formed by connecting a gradually reducing section and a gradually expanding section, the gradually reducing section is gradually reduced and the gradually expanding section is gradually expanded along the airflow direction, the inlet 62 is a port of the first flow guiding section 6, and the outlet 63 is a port of the second flow guiding section 61. The maximum aperture of the tapered section of the first guide section 6 is larger than the maximum aperture of the tapered section of the second guide section 61, and the maximum aperture of the divergent section of the first guide section 6 is larger than the maximum aperture of the divergent section of the second guide section 61. The heat sink 52 is attached to the inner side of the heat sink 20, that is, the heat sink 52 is attached to the heat sink 20 on the side close to the heat generating device 4, and the heat conductive gasket 51 is interposed between the heat generating device 4 and the heat sink 52. M is a positive integer, i.e., M first fins 53 means 1 first fin 53, 2 first fins 53, 3 first fins 53, 4 first fins 53, etc.
With continued reference to fig. 1, the heat-conducting pad 51 and the heat-generating device 4 are attached to each other, so that the heat-generating device 4 transfers heat to the heat-conducting pad 51, and the heat-conducting pad 51 is disposed inside the second hollow portion 23. The heat sink 52 is provided on the heat conductive gasket 51, the heat sink 52 and the heat dissipating surface 21 are bonded to each other so that the heat sink 52 transfers the heat of the heat conductive gasket 51 to the heat dissipating surface 21, and the heat sink 52 is provided inside the second hollow portion 23. The material of the heat sink 52 may be graphite. Each of the first fins 53 is provided on the heat radiating surface 21 to absorb heat of the heat radiating surface 21, each of the first fins 53 is located between the air inlet 11 and the air outlet 12, the heat radiating surface 21 is located between each of the first fins 53 and the heat conductive gasket 51, each of the first fins 53 is provided with a first air inlet portion 531, a first air outlet portion 533 and a first intermediate portion 532, a tapered section of the first guide section 6 may be formed by setting a cross-sectional diameter of the first air inlet portion 531 to be sequentially increased in a direction toward the first intermediate portion 532, and a tapered section of the first guide section 6 may be formed by sequentially decreasing a cross-sectional diameter of the first intermediate portion 532 in a direction toward the first air outlet portion 533.
With continued reference to fig. 1 and 2, each of the second ribs 54 is disposed on the heat dissipating surface 21 to absorb heat of the heat dissipating surface 21, each of the second ribs 54 is provided with a second air inlet portion 541, a second air outlet portion 543, and a second middle portion 542, each of the second air inlet portions 541 is connected to a corresponding one of the first air outlet portions 533, a tapered section of the second flow guiding section 61 is formed by sequentially increasing a cross-sectional diameter of the second air inlet portion 541 in a direction toward the second middle portion 542, and a tapered section of the second flow guiding section 61 is formed by sequentially decreasing a cross-sectional diameter of the second middle portion 542 in a direction toward the second air outlet portion 543. The maximum spacing between adjacent two second intermediate portions 542 is smaller than the maximum spacing between the corresponding two first intermediate portions 532. Wherein, the maximum distance between two adjacent first air inlet portions 531 is greater than the maximum distance between two corresponding second air inlet portions 541; the maximum distance between two adjacent first air outlet portions 533 is greater than the maximum distance between two corresponding second air outlet portions 543.
A length between each of the first air inlet portions 531 and the first air outlet portions 533 is smaller than a length between a corresponding one of the second air inlet portions 541 and a corresponding one of the second air outlet portions 543. Each first air inlet portion 531 is uniformly distributed on the heat dissipation surface 21, and each second air outlet portion 543 is uniformly distributed on the heat dissipation surface 21. Each of the first air inlet portions 531 takes a tapered structure; each of the second air outlets 543 is in a cone-shaped structure. The surface of each first air inlet portion 531 is smooth, the surface of each first air outlet portion 533 is smooth, and the surface of each first intermediate portion 532 is smooth; the surface of each of the second air inlet portions 541 is smooth, the surface of each of the second air outlet portions 543 is smooth, and the surface of each of the second intermediate portions 542 is smooth. The air outlet face of the fan faces away from the air inlet 11 to discharge the heat of the heat generating device 4 from the air outlet 12. Each of the first air inlet portions 531 is parallel to the air outlet surface of the fan. The lengths of the two adjacent first air inlet portions 531 are equal, the lengths of the two adjacent first air outlet portions 533 are equal, the lengths of the two adjacent first intermediate portions 532 are equal, the lengths of the two adjacent second air inlet portions 541 are equal, the lengths of the two adjacent second air outlet portions 543 are equal, and the lengths of the two adjacent second intermediate portions 542 are equal.
Specifically, the heat conducting gasket 51 may be a heat conducting silica gel pad, the heat conducting gasket 51 may tightly fill a gap between the heat generating device 4 and the heat sink 52, the heat of the heat generating device 4 may be transferred to the heat conducting gasket 51 by attaching the surfaces of the heat conducting gasket 51 and the heat generating device 4 to each other, and after the surfaces of the heat conducting gasket 51 and the heat sink 52 are attached to each other, the heat of the heat conducting gasket 51 may be transferred to the heat sink 52, that is, the heat of the heat generating device 4 may be transferred to the heat sink 52 through the heat conducting gasket 51. The heat sink 52 has a high thermal conductivity coefficient, and can diffuse heat of a heat source rapidly, so as to improve the transmission speed of heat, and the heat sink 52 can be made of graphite material, red copper material, aluminum material, etc., and only the heat of the heat conducting gasket 51 needs to be diffused rapidly in the heat sink 52. In the present invention, the material for manufacturing the heat sink 52 is preferably graphite material, the graphite heat sink 52 refers to the heat sink 52 made of graphite material, and since the graphite heat sink 52 has a good ultrahigh thermal conductivity coefficient in the horizontal direction, after the heat generated by the heating device 4 is transferred to the heat conducting gasket 51, the graphite heat sink 52 can absorb the heat of the heat conducting gasket 51 in time, so as to increase the heat transfer speed and achieve the effect of quickly diffusing the hot spot heat.
In the embodiment of the present invention, the shape of the graphite heat sink 52 is not limited, and the graphite heat sink 52 may be a rectangular parallelepiped or a square parallelepiped as a whole. It is only necessary to attach the graphite heat sink 52 to the heat dissipating surface 21 of the housing 2 and to transfer the heat of the heat transfer pad 51 absorbed by the graphite heat sink 52 to the heat dissipating surface 21 in time. In the present invention, the shape of the graphite fin 52 is preferably a rectangular parallelepiped shape matching the heat dissipating surface 21, that is, the graphite fin 52 fits the heat dissipating surface 21, and the graphite fin 52 covers the entire heat dissipating surface 21 on the side close to the heat conductive gasket 51. Since the graphite fins 52 fully cover the side of the heat dissipation surface 21 close to the thermal pad 51, the graphite fins 52 have a larger contact area with the heat dissipation surface 21. And then the heat of the absorbed heat conducting gasket 51 can be quickly diffused to the heat radiating surface 21 through the graphite heat radiating fins 52, and the heat is timely absorbed away by the heat radiating surface 21 for heat radiation, so that the heat radiating speed is increased, and the technical effect of the heat radiating effect is improved.
Meanwhile, each of the first ribs 53 includes a first air inlet portion 531, a first intermediate portion 532, and a first air outlet portion 533, the first intermediate portion 532 being located between the first air inlet portion 531 and the first air outlet portion 533, and the first air inlet portion 531, the first intermediate portion 532, and the first air outlet portion 533 are integrally formed to constitute the first rib 53. The second ribs 54, which are the same number as the M first ribs 53, refer to 1 second rib 54, 2 second ribs 54, 3 second ribs 54, 4 second ribs 54, and the like. Each of the second ribs 54 includes a second air inlet portion 541, a second intermediate portion 542, and a second air outlet portion 543, the second intermediate portion 542 is located between the second air inlet portion 541 and the second air outlet portion 543, and the second air inlet portion 541, the second intermediate portion 542, and the second air outlet portion 543 are integrally formed to constitute the second rib 54. The air outlet surface of the fan deviates from the direction of the air inlet 11, and then the external air is driven by the fan to enter from the air inlet 11, pass through the first air inlet portion 531, the first middle portion 532 and the first air outlet portion 533 in each first rib 53, and pass through the second air inlet portion 541, the second middle portion 542 and the second air outlet portion 543 in each second rib 54, and then be discharged from the air outlet 12.
In addition, a second air intake part541 are connected to a corresponding one of the first air outlet portions 533, as shown in fig. 3, an integral rib may be formed by integrally molding the first air inlet portion 531, the first middle portion 532, the first air outlet portion 533, the second air inlet portion 541, the second middle portion 542 and the second air outlet portion 543, and the integral rib is formed to block the passage of air. Assuming that M is equal to 2, the two first fins 53 are a first fin 53A and a first fin 53B, respectively, and the first fin 53A includes a first air intake 531A1First intermediate part 532A2And a first air outlet portion 533A3The first rib 53B includes a first air inlet portion 531B1First intermediate part 532B2And a first air outlet portion 533B3The two second ribs 54 are a second rib 54C and a second rib 54D, respectively, the second rib 54C includes a second air inlet portion 541C1And a second intermediate portion 542C2And a second air outlet portion 543C3The second rib 54D includes a second air inlet portion 541D1And a second intermediate portion 542D2And a second air outlet portion 543D3First air intake part 531A1First intermediate part 532A2And a first air outlet portion 533A3And a second air intake portion 541C1And a second intermediate portion 542C2And a second air outlet portion 543C3On the same side, the first air intake part 531B1First intermediate part 532B2And a first air outlet portion 533B3 And a second air intake portion 541D1And a second intermediate portion 542D2And a second air outlet portion 543D3On the opposite side, the first integral rib is formed by the first air inlet portion 531A1First intermediate part 532A2And a first air outlet portion 533A3And a second air intake portion 541C1And a second intermediate portion 542C2And a second air outlet portion 543C3Formed integrally with the first inlet 531B1First intermediate part 532B2And a first air outlet portion 533B3 And a second air intake portion 541D1And a second intermediate portion 542D2And a second air outlet portion 543D3Formed integrally with each other, and a gas flow passage for gas to pass through is formed between the first integral rib and the second integral rib, and gas passes through the first integral rib from the gas inlet 11The air flow channel between the fins and the second integral fin is discharged from the air outlet 12 after being led into the inlet 62 and the outlet 63; or the gas is discharged from the gas inlet 11 after passing through the outlet 63 and the inlet 62 in the gas flow path between the first integral rib and the second integral rib from the gas outlet 12, so as to take the heat of each first rib 53 and the heat of each second rib 54 to discharge the heat.
With continued reference to fig. 1 and 3, the cross-sectional diameter of the first air inlet portion 531 is a cross-sectional diameter in a direction perpendicular to the first air inlet portion 531, the cross-sectional diameter of the first intermediate portion 532 is a cross-sectional diameter in a direction perpendicular to the first intermediate portion 532, the cross-sectional diameter of the first air outlet portion 533 is a cross-sectional diameter in a direction perpendicular to the first air outlet portion 533, the cross-sectional diameter of the second air inlet portion 541 is a cross-sectional diameter in a direction perpendicular to the second air inlet portion 541, the cross-sectional diameter of the second intermediate portion 542 is a cross-sectional diameter in a direction perpendicular to the second intermediate portion 542, and the cross-sectional diameter of the second air outlet portion 543 is a cross-sectional diameter in a direction perpendicular to the second air outlet portion 543. Continuing with the example where M is equal to 2, assume that the gas passes through the first gas inlet 531A1And a first air intake part 531B1The gap therebetween is a channel X1Gas passing through the first intermediate portion 532A2And a first intermediate portion 532B2The gap therebetween is a channel X2The gas passes through the first gas outlet portion 533A3And a first air outlet portion 533B3 The gap therebetween is a channel X3Can be formed by channel X1Channel X2And channel X3Forming the first inducer 6. Due to the first air inlet portion 531A1Toward the first intermediate portion 532A2In the direction of (a), the first intermediate portion 532A2Is directed toward the first gas outlet portion 533A3In the direction of the first air intake part 531B1Toward the first intermediate portion 532B2In the direction of (a), the first intermediate portion 532B2Is directed toward the first gas outlet portion 533B3In order of decreasing direction. So that the gas passes throughThrough channel X1Channel X2And channel X3The gas flow velocity is increased when passing through the reduced flow cross section, so that the gas flow velocity is increased, the gas passing time is shortened, and heat is transferred from the channel X1Channel X2And channel X3The medium is discharged rapidly.
With reference to fig. 3, the maximum distance between two adjacent first air inlet portions 531 is the maximum distance between two adjacent first air inlet portions 531, and if the distance between two adjacent first air inlet portions 531 is equal everywhere, the maximum distance between two adjacent first air inlet portions 531 is the distance between two adjacent first air inlet portions 531. The maximum distance between two corresponding second air inlet portions 541 refers to a maximum distance position between two adjacent second air inlet portions 541, and if the distance between two adjacent second air inlet portions 541 is equal everywhere, the maximum distance between two adjacent second air inlet portions 541 refers to a distance between two adjacent second air inlet portions 541. Suppose that the first air intake portion 531A1And a first air intake part 531B1The value of the maximum distance between is N1A second air intake portion 541C1And a second air intake portion 541D1The value of the maximum distance between is N2Then N is1＞N2The maximum aperture of the tapered section of the first guide section 6 is larger than the maximum aperture of the tapered section of the second guide section 61.
The maximum distance between two adjacent first air outlet portions 533 is the maximum distance between two adjacent first air outlet portions 533, and if the distance between two adjacent first air outlet portions 533 is equal everywhere, the maximum distance between two adjacent first air outlet portions 533 refers to the distance between two adjacent first air outlet portions 533. The maximum distance between two corresponding second air outlet portions 543 refers to the maximum distance between two adjacent second air outlet portions 543, and if the distances between two adjacent second air outlet portions 543 are equal, the maximum distance between two adjacent second air outlet portions 543 refers to the distance between two adjacent second air inlet portions 541. Suppose that the first air outlet portion 533A3And a first air outlet portion 533B3At maximum distance from each otherThe value being N3A second air outlet portion 543C3And a second air outlet portion 543D3The value of the maximum distance between is N4Then N is3＞N4The maximum diameter of the divergent section of the first guide section 6 is larger than the maximum diameter of the divergent section of the second guide section 61.
Meanwhile, the maximum distance between two adjacent first intermediate portions 532 is the maximum distance between two adjacent first intermediate portions 532, and if the distance between two adjacent first intermediate portions 532 is equal everywhere, the maximum distance between two adjacent first intermediate portions 532 is the distance between two adjacent first intermediate portions 532. The maximum distance between two corresponding second intermediate portions 542 is the maximum distance between two adjacent second intermediate portions 542, and if the distance between two adjacent second intermediate portions 542 is equal everywhere, the maximum distance between two adjacent second intermediate portions 542 is the distance between two adjacent second intermediate portions 542. Assume first intermediate portion 532A2And a first intermediate portion 532B2The value of the maximum distance between is N5Second intermediate portion 542C2And a second intermediate portion 542D2The value of the maximum distance between is N6Then N is5＞N6. Suppose that the gas passes through the second gas inlet portion 541C1And a second air intake portion 541D1The gap therebetween is a channel Y1Gas passes through the second intermediate portion 542C2And a second intermediate portion 542D2The gap therebetween is a channel Y2The gas passes through the second gas outlet part 543C3And a second air outlet portion 543D3 The gap therebetween is a channel Y3Can be formed by channel Y1Channel Y2And channel Y3Forming the second inducer 61. Gas from the above-mentioned channel X1Channel X2And channel X3After flowing out of the channel, will flow into the channel Y1Channel Y2And channel Y3And then discharged through the gas outlet 12. Due to the above N1＞N2，N3＞N4，N5＞N6Gas in the inlet channel Y1Channel Y2And channel Y3In which it will pass through againThe flow velocity is continuously increased due to the flow cross section, and the flow velocity of the gas is increased again. I.e. the gas passing through the channel X1Channel X2And channel X3The acceleration of the first stage can be obtained in the process, and the initial speed of the gas is improved; the gas with higher initial velocity passes through the channel Y1Channel Y2And channel Y3Will obtain a second phase acceleration, the gas flow rate being increased and then able to pass through the channel X rapidly1Channel X2Channel X3Channel Y1Channel Y2And channel Y3So as to rapidly discharge the heat from the air outlet 12, improve the heat dissipation efficiency and be beneficial to the long-term stable use of the communication equipment. Thereby the technical effect that the heat dissipation effect can be improved is achieved.
It should be noted that, since the cross-sectional diameter of the first air inlet portion 531 increases in sequence in the direction toward the first middle portion 532, the cross-sectional diameter of the first middle portion 532 decreases in sequence in the direction toward the first air outlet portion 533, the cross-sectional diameter of the second air inlet portion 541 increases in sequence in the direction toward the second middle portion 542, and the cross-sectional diameter of the second middle portion 542 decreases in sequence in the direction toward the second air outlet portion 543, so that the surface of the first air inlet portion 531, the surface of the first middle portion 532, the surface of the first air outlet portion 533, the surface of the second air inlet portion 541, the surface of the second middle portion 542, and the surface of the second air outlet portion 543 present a curved shape, it is advantageous to increase the heat exchange area between the gas and the first air inlet portion 531, the first middle portion 532, the first air outlet portion 533, the second air inlet portion 541, the second middle portion 542, and the second air outlet portion 543, and to transfer heat to the gas in time, is beneficial to improving the heat dissipation efficiency.
In addition, the length between the first air inlet portion 531 and the first air outlet portion 533 refers to the total length of the first air inlet portion 531, the first intermediate portion 532, and the first air outlet portion 533 in the same first fin 53. The length between a corresponding one of the second air inlet portions 541 and a corresponding one of the second air outlet portions 543 is the total length of the second air inlet portion 541, the second middle portion 542 and the second air outlet portion 543 of the same second fin 54. For example, assume that the first air intake portion 531A1Length of (2)First intermediate part 532A2Length of the first air outlet portion 533A3Is M1A second air intake portion 541C1Length of (2), second intermediate portion 542C2Length of the second air outlet part 543C3Is M2In the present invention, M1And M2Preferably M1＜M2I.e. gas in the channel X1Channel X2And channel X3Is less than in the passage Y1Channel Y2And channel Y3Of the distance of movement. So that the gas passes through the channel X1Channel X2And channel X3After obtaining a higher initial velocity, will pass through the channel Y1Channel Y2And channel Y3The process of (2) moves a longer distance, which prolongs the time for accelerating the gas. Gas passing through the channel Y1Channel Y2And channel Y3The acceleration for a long time improves the flow rate of the gas, so that the gas can be quickly discharged after passing through, and the heat dissipation efficiency is improved.
With continued reference to fig. 3 and fig. 4, the uniform distribution of each first air inlet portion 531 on the heat dissipation surface 21 means that each first air inlet portion 531 is aligned with each other, and the distance between two adjacent first air inlet portions 531 is equal. The second air outlet portions 543 are uniformly distributed on the heat dissipation surface 21, that is, the second air outlet portions 543 are aligned with each other, and the distances between two adjacent second air outlet portions 543 are equal. Assuming that M is equal to 3, the three first fins 53 are a first fin 53A, a first fin 53B, and a first fin 53E, respectively, and the first fin 53E includes a first air intake portion 531E1First intermediate portion 532E2And a first air outlet portion 533E3First air intake part 531B1At the first air inlet portion 531A1And a first air intake portion 531E1First intermediate portion 532B2At the first intermediate portion 532A2And a first intermediate portion 532E2Meanwhile, the first air outlet portion 533B3Is located at the first air outlet portion 533A3And a first air outlet portion 533E3In the meantime. Since the first rib 53E has the same structure as the first rib 53AThe principle of the first rib 53E is the same as that of the first rib 53A, so the first rib 53E will not be described again here. The three second ribs 54 are a second rib 54C, a second rib 54D, and a second rib 54F, respectively, and the second rib 54F includes a second air inlet portion 541F1And a second intermediate portion 542F2And a second air outlet part 543F3Second air intake portion 541D1At the second air inlet portion 541C1And a second air intake portion 541F1Second intermediate portion 542D2At the second intermediate portion 542C2And a second intermediate portion 542F2A second air outlet part 543D3Is located in the second air outlet part 543C3And a second air outlet part 543F3In the meantime. Since the second rib 54F has the same structure as the second rib 54C and the second rib 54F has the same principle as the second rib 54C, the second rib 54F will not be described in detail herein. As shown in fig. 3, the first air intake portion 531A1Left end, first air intake part 531B1Left end, first air intake portion 531E1Are aligned with each other on the same straight line, at the first air intake part 531B1At any one of the positions of the first air inlet portion 531B1And a first air intake portion 531A1The space therebetween and the first air intake part 531B1And a first air intake portion 531E1The spacing therebetween being equal. So that the gas is uniformly supplied from the first gas inlet portion 531A1And a first air intake part 531B1And a first air intake portion 531B1And a first air intake portion 531E1The inlet between the two channels is used for realizing the uniform distribution of the airflow at the inlet, reducing the resistance of the airflow at the inlet and being beneficial to the rapid gas entering of the channel X1Channel X2Channel X3Channel Y1Channel Y2And channel Y3The heat absorption is carried out, and the heat absorption efficiency is improved. Second air outlet part 543C3The right end of the first air outlet part 543A, and the second air outlet part 543B3The right end of the first air outlet part 543F3Are aligned with each other on the same straight line, and are arranged in the second air outlet part 543D3In any position, the second air outlet part 543D3And a second air outlet portion 543C3The space between the first and second air outlet parts 543D3And a second air outlet part 543F3The spacing therebetween is also equal. So that the gas is uniformly discharged from the second gas outlet part 543D3And a second air outlet portion 543C3And a second air outlet portion 543D3And a second air outlet part 543F3The outlet between the two channels flows out, the airflow at the outlet is uniformly distributed, the resistance of the airflow at the outlet is reduced, and the rapid gas flow from the channel X is facilitated1Channel X2Channel X3Channel Y1Channel Y2And channel Y3The heat is taken away, and the heat dissipation efficiency is improved.
Meanwhile, by providing the first air inlet portion 531 in each of the first ribs 53 in a tapered structure, when the gas passes through the first air inlet portion 531 in each of the first ribs 53, the first air inlet portion 531 taking on the tapered structure can facilitate reduction of resistance of the gas flow, facilitating the gas to rapidly pass through the first air inlet portion 531. By providing the second gas outlet portion 543 of each of the second ribs 54 in a tapered structure, when gas passes through the second gas outlet portion 543 of each of the second ribs 54, it is also facilitated that the gas rapidly passes through the second gas inlet portion 541. And then, the gas can rapidly pass through the first air inlet portion 531 and the second air inlet portion 541, heat can be timely discharged, and the heat dissipation effect is improved. In the process of gas flowing through the first gas inlet portion 531, the first intermediate portion 532, and the first gas outlet portion 533 in each of the first fins 53, and the second gas inlet portion 541, the second intermediate portion 542, and the second gas outlet portion 543 in each of the second gas inlet portions 541, since the surface of the first gas inlet portion 531 is smooth, the surface of the first gas outlet portion 533 is smooth, the surface of the first intermediate portion 532 is smooth, the surface of the second gas inlet portion 541 is smooth, the surface of the second gas outlet portion 543 is smooth, and the surface of the second intermediate portion 542 is also smooth. The resistance that can effectively reduce gas and receive to reduce the interference of vortex, be favorable to gaseous passing through rapidly then, with the heat quick discharge, improved the radiating effect.
It is noted that, since the first air intake portion 531A1And the first air intake part 531B1Are equal in length, first intermediate portion 532A2Length of and first intermediate portion 532B2Are equal in lengthA first air outlet portion 533A3Length of the first air outlet portion 533B3Are equal in length so that the gas passes through the channel X1Channel X2And channel X3The air flow is subjected to the channel shrinking process at the same time, so that the pressure is reduced at the same time, and further pressure difference is continuously generated to continuously provide a direction from the channel X for the air flow1Flow direction channel X3The suction force is beneficial to accelerating the flow of the gas. Since the second air intake portion 541C1Length of (2) and second air intake portion 541D1Is equal in length, and the second intermediate portion 542C2And second intermediate portion 542D2Are equal in length, and a second air outlet part 543C3Length of (3) and second gas outlet portion 543D3Are equal in length so that the gas passes through the channel X1Channel X2And channel X3The airflow is subjected to the channel shrinking process at the same time, so that the pressure is reduced at the same time, and further pressure difference is continuously generated to continuously provide the airflow with a direction from the channel Y1Flow direction channel Y3Is advantageous for accelerating the gas from the channel X1Channel X2Channel X3Channel Y1Channel Y2And channel Y3The heat pipe can rapidly pass through the heat pipe, and simultaneously, the generation of vortex is reduced, so that the heat can be rapidly discharged, and the heat dissipation effect is provided.
For the fan:
the fan is disposed at the air outlet 12 to form an exhaust passage for dissipating heat from the heat generating device 4.
Specifically, the fan may be disposed at the air outlet 12, and if the blades of the fan rotate clockwise, the fan drives air to enter from the air inlet 11 and to be discharged from the air outlet 12; when the blades in the fan rotate counterclockwise, the fan drives air to enter from the air outlet 12 and to exit from the air inlet 11. In the present invention the blades of the fan are preferably rotated clockwise, i.e. the fan draws air outwardly. When the blades of the fan rotate clockwise, the fan drives air to pass through the air inlet 11, the first air inlet portion 531, the first middle portion 532, the first air outlet portion 533, the second air inlet portion 541, the second middle portion 542, and the second air outlet portion 543 in sequence, and then the air is discharged from the air outlet 12. Since each of the first air inlet portions 531 and the air outlet surface of the fan are parallel to each other, the air can reach the air outlet surface of the fan through the shortest route after flowing through the first air inlet portions 531, the first middle portions 532, the first air outlet portions 533, the second air inlet portions 541, the second middle portions 542, and the second air outlet portions 543, and then the heat absorbed by the air is discharged from the air outlet surface of the fan. Therefore, the quick heat dissipation can be realized, and the heat dissipation effect is further improved.
In order to rapidly diffuse heat of the PCB board 3 and the heat generating device 4 disposed inside the second hollow portion 23 in the case 2, a heat dissipation effect is improved. The embodiment of the invention provides an optical module heat dissipation device which further comprises a heat dissipation substrate and a heat conduction substrate, wherein the heat dissipation substrate is arranged on the mounting surface 22 and connected with the heat conduction substrate, the heat dissipation substrate is positioned between the heat conduction substrate and the mounting surface 22 and connected with a PCB (printed circuit board) 3, and the PCB 3 is positioned between the heat conduction substrate and a heating device 4.
Specifically, since the structure of the heat dissipating substrate is the same as that of the heat dissipating fin 52, and the principle of the heat dissipating substrate is the same as that of the heat dissipating fin 52, the description of the heat dissipating substrate will not be repeated here. Since the structure of the heat conducting substrate is the same as that of the heat conducting pad 51, and the principle of the heat conducting substrate is the same as that of the heat conducting pad 51, the heat conducting substrate will not be described in detail herein. By disposing the heat conductive substrate on the PCB board 3, heat generated from the PCB board 3 is transferred to the heat conductive substrate. The heat conductive substrate transfers heat generated from the PCB 3 to the heat dissipation substrate by being disposed on the heat dissipation substrate. The heat dissipation substrate has high heat conductivity coefficient, so that heat of a heat source can be quickly diffused. The heat radiating substrate can absorb the heat of the heat conducting substrate in time, namely, the heat generated by the PCB 3 can be absorbed in time through the heat radiating substrate, so that the heat radiating effect of the PCB 3 is improved, and the heat radiating effect of the PCB 3 is facilitated. Meanwhile, after the heat dissipation substrate and the mounting surface 22 are attached to each other, the absorbed heat can be transmitted to the mounting surface 22 in time through the heat dissipation substrate. The heat sink substrate may cover the side of the mounting surface 22 close to the PCB 3 such that there is a larger contact area between the heat sink substrate and the mounting surface 22. Realize then can be with the heat of the PCB board 3 that absorbs to installation face 22 through the heat dissipation substrate fast diffusion to through installation face 22 with the heat diffusion to the inside of the first well kenozooecium 13 in above-mentioned cage 1, through being located the inside gas outgoing of the first well kenozooecium 13, realized the fast diffusion of hot spot heat, promote the radiating efficiency, improved the radiating effect to PCB board 3, be favorable to communication equipment's long-term stable use.
The invention provides an optical module heat sink, wherein a shell 2 is arranged in a first hollow part 13 in a cage 1, the first hollow part 13 of the cage 1 is communicated with an air inlet 11 and an air outlet 12, and the shell 2 is provided with a second hollow part 23 for mounting a heating device 4 and a heat dissipation plate 20 surrounding the second hollow part 23. An airflow passage is formed on the outer side of the heat dissipation plate 20, the two ports of the airflow passage are respectively an inlet 62 and an outlet 63, the inlet 62 of the airflow passage is connected with the air inlet 11, the outlet 63 of the airflow passage is connected with the air outlet 12, and the aperture of at least part of the airflow passage is smaller than the apertures of the inlet 62 and the outlet 63. Therefore, the external cold gas enters from the air inlet 11, the flow rate of the gas is increased in the process of passing through the inlet 62 and the outlet 63 of the airflow channel, and then the gas is discharged from the air outlet 12, so that the heat is rapidly discharged, the heat dissipation efficiency is improved, and the long-term stable use of the communication equipment is facilitated. Thereby the technical effect that the heat dissipation effect can be improved is achieved.
In order to describe an optical module provided by the present invention in detail, the above embodiments describe an optical module heat sink in detail, and based on the same inventive concept, the present application also provides an optical module, which is described in detail in embodiment two.
Example two
The second embodiment of the invention provides an optical module, which comprises a heating device 4 and the optical module heat dissipation device, wherein the heating device 4 is arranged inside the second hollow part 23.
Specifically, the heat conductive pad 51 and the heat generating device 4 are attached to transfer heat to the heat conductive pad 51 through the heat generating device 4, and the heat conductive pad 51 is disposed inside the second hollow portion 23 of the case 2. The heat sink 52 is provided on the heat conductive gasket 51, the heat sink 52 is bonded to the heat dissipation surface 21 of the case 2 so that the heat of the heat conductive gasket 51 is transferred to the heat dissipation surface 21 via the heat sink 52, and the heat sink 52 is provided inside the second hollow portion 23. Each first fin 53 is provided on the heat radiating surface 21 to absorb heat of the heat radiating surface 21, each first fin 53 is located between the air inlet 11 of the cage 1 and the air outlet 12 of the cage 1, the heat radiating surface 21 is located between each first fin 53 and the heat conductive gasket 51, each first fin 53 is provided with a first air inlet portion 531, a first air outlet portion 533 and a first intermediate portion 532, a cross-sectional diameter of the first air inlet portion 531 increases in order in a direction toward the first intermediate portion 532, a cross-sectional diameter of the first intermediate portion 532 decreases in order in a direction toward the first air outlet portion 533, and M is a positive integer greater than or equal to 1. Each of the second ribs 54 is disposed on the heat dissipating surface 21 to absorb heat of the heat dissipating surface 21, each of the second ribs 54 is provided with a second air inlet portion 541, a second air outlet portion 543, and a second intermediate portion 542, each of the second air inlet portions 541 is connected to a corresponding one of the first air outlet portions 533, a cross-sectional diameter of each of the second air inlet portions 541 increases in a direction toward the second intermediate portion 542, a cross-sectional diameter of each of the second intermediate portions 542 decreases in a direction toward the second air outlet portion 543, and a maximum distance between two adjacent second intermediate portions 542 is smaller than a maximum distance between two corresponding first intermediate portions 532.
The invention provides an optical module, wherein a shell 2 is arranged in a first hollow part 13 in a cage 1, the first hollow part 13 of the cage 1 is communicated with an air inlet 11 and an air outlet 12, and the shell 2 is provided with a second hollow part 23 for mounting a heating device 4 and a heat dissipation plate 20 surrounding the second hollow part 23. An airflow passage is formed on the outer side of the heat dissipation plate 20, the two ports of the airflow passage are respectively an inlet 62 and an outlet 63, the inlet 62 of the airflow passage is connected with the air inlet 11, the outlet 63 of the airflow passage is connected with the air outlet 12, and the aperture of at least part of the airflow passage is smaller than the apertures of the inlet 62 and the outlet 63. Therefore, the external cold gas enters from the air inlet 11, the flow rate of the gas is increased in the process of passing through the inlet 62 and the outlet 63 of the airflow channel, and then the gas is discharged from the air outlet 12, so that the heat is rapidly discharged, the heat dissipation efficiency is improved, and the long-term stable use of the communication equipment is facilitated. Thereby the technical effect that the heat dissipation effect can be improved is achieved.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. An optical module heat sink, the apparatus comprising:
a cage provided with an air inlet, an air outlet and a first hollow portion communicating the air inlet and the air outlet;
the shell is arranged in the first hollow part, and is provided with a second hollow part for mounting a heating device and a heat dissipation plate surrounding the second hollow part;
an airflow channel is formed on the outer side of the heat dissipation plate, two ports of the airflow channel are respectively an inlet and an outlet, the inlet is in butt joint with the air inlet, the outlet is in butt joint with the air outlet, and the aperture of at least part of the airflow channel is smaller than the apertures of the inlet and the outlet.
2. The optical module heat sink according to claim 1, wherein at least one rib is disposed on an outer side of the heat sink, the rib extending along a length of the airflow channel, and the rib divides the outer side of the heat sink into at least two airflow channels.
3. The optical module heat sink according to claim 1, wherein the airflow channel includes a first flow guiding section and a second flow guiding section, one end of the first flow guiding section and one end of the second flow guiding section are connected to each other, the first flow guiding section communicates with the inlet, the second flow guiding section communicates with the outlet, and at least a part of the first flow guiding section and the second flow guiding section have a smaller diameter than the inlet and the outlet.
4. The optical module heat sink as claimed in claim 3, wherein the minimum aperture of the first flow guiding section is larger than the minimum aperture of the second flow guiding section, and the length of the first flow guiding section is smaller than the length of the second flow guiding section.
5. The optical module heat sink of claim 3, wherein an inner surface of the first flow guide section is smooth and an inner surface of the second flow guide section is smooth.
6. The optical module heat sink according to claim 3, wherein the first flow guiding section and the second flow guiding section are formed by connecting a tapered section and a gradually expanding section, the tapered section is tapered along an airflow direction, the gradually expanding section is gradually expanded, the inlet is a port of the first flow guiding section, and the outlet is a port of the second flow guiding section.
7. The optical module heat sink as claimed in claim 6, wherein the maximum aperture of the tapered section of the first flow guiding section is larger than the maximum aperture of the tapered section of the second flow guiding section, and the maximum aperture of the tapered section of the first flow guiding section is larger than the maximum aperture of the tapered section of the second flow guiding section.
8. The optical module heat sink of claim 1, wherein the apparatus further comprises:
the radiating fin is attached to the inner side of the radiating plate;
and the heat conduction gasket is clamped between the heating device and the radiating fin.
9. The optical module heat sink of claim 8, wherein the heat sink is made of a graphite material.
10. An optical module comprising a heat generating device, characterized by further comprising the optical module heat sink according to any one of claims 1 to 9, wherein the heat generating device is disposed in the second hollow portion.
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| CN202110441509.XA CN113376761B (en) | 2021-04-23 | 2021-04-23 | Optical module heat dissipation device and optical module |
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| TWM299774U (en) * | 2006-05-19 | 2006-10-21 | Sound Ware Industry Co Ltd | Improved muffler structure on the exhaust pipe |
| US20090021913A1 (en) * | 2007-07-20 | 2009-01-22 | Foxconn Technology Co., Ltd. | Heat dissipation device |
| TW200908859A (en) * | 2007-08-03 | 2009-02-16 | Foxconn Tech Co Ltd | Heat dissipation device |
| CN207486521U (en) * | 2017-11-20 | 2018-06-12 | 苏州旭创科技有限公司 | Optical module |
| CN110430718A (en) * | 2019-07-01 | 2019-11-08 | 联想(北京)有限公司 | Cooling device and electronic equipment |
| US10488123B2 (en) * | 2013-10-17 | 2019-11-26 | Korea Atomic Energy Research Institute | Heat exchanger for steam generator and steam generator comprising same |
-
2021
- 2021-04-23 CN CN202110441509.XA patent/CN113376761B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM299774U (en) * | 2006-05-19 | 2006-10-21 | Sound Ware Industry Co Ltd | Improved muffler structure on the exhaust pipe |
| US20090021913A1 (en) * | 2007-07-20 | 2009-01-22 | Foxconn Technology Co., Ltd. | Heat dissipation device |
| TW200908859A (en) * | 2007-08-03 | 2009-02-16 | Foxconn Tech Co Ltd | Heat dissipation device |
| US10488123B2 (en) * | 2013-10-17 | 2019-11-26 | Korea Atomic Energy Research Institute | Heat exchanger for steam generator and steam generator comprising same |
| CN207486521U (en) * | 2017-11-20 | 2018-06-12 | 苏州旭创科技有限公司 | Optical module |
| CN110430718A (en) * | 2019-07-01 | 2019-11-08 | 联想(北京)有限公司 | Cooling device and electronic equipment |
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| CN113376761B (en) | 2022-05-10 |
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