CN111741655A - Heat dissipation device and electronic equipment - Google Patents
Heat dissipation device and electronic equipment Download PDFInfo
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- CN111741655A CN111741655A CN202010621723.9A CN202010621723A CN111741655A CN 111741655 A CN111741655 A CN 111741655A CN 202010621723 A CN202010621723 A CN 202010621723A CN 111741655 A CN111741655 A CN 111741655A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The application provides a heat abstractor, includes: the radiating fin group is provided with a plurality of radiating channels formed by two adjacent radiating fins; the airflow generation structure is provided with an airflow output channel so as to give the generated airflow to the radiating fin group through the airflow output channel; wherein the widths of the plurality of heat dissipation channels are not completely the same. The arrangement ensures that the widths of the heat dissipation channels of the whole heat dissipation fin group are not completely consistent, and different areas have heat dissipation channels with different widths. The air flow parameters corresponding to different areas are not completely the same, and the areas with different air flow parameters can be correspondingly provided with heat dissipation channels with different widths, so that the air flows with different parameters can be fully utilized, the heat exchange rate of the heat dissipation fins is improved, and the performance of the heat dissipation device is improved.
Description
Technical Field
The present application relates to the field of heat dissipation devices, and more particularly, to a heat dissipation device, i.e., an electronic device.
Background
At present, devices in electronic products have large heat productivity, a fan is generally adopted by a heat dissipation device to generate airflow, the airflow passes through heat dissipation fins to realize heat dissipation, and the arrangement of related heat dissipation fins does not fully utilize the airflow generated by the fan, so that the heat dissipation efficiency is low.
Disclosure of Invention
In view of the above, the present disclosure provides a heat dissipation device. The technical scheme of the embodiment of the application is realized as follows:
an embodiment of the present application provides a heat dissipation device, including: the radiating fin group is provided with a plurality of radiating channels formed by two adjacent radiating fins; the airflow generation structure is provided with an airflow output channel so as to give the generated airflow to the radiating fin group through the airflow output channel; wherein the widths of the plurality of heat dissipation channels are not completely the same.
Further, the airflow output channel has a first area and a second area, and the air pressure of the first area is higher than that of the second area; the first heat dissipation channel positioned in the first area has a first width, the second heat dissipation channel positioned in the second area has a second width, and the first width is smaller than the second width; or the width of the heat dissipation channel is gradually increased from the first area to the second area.
Further, the lengths of the two adjacent cooling fins are not completely the same.
Further, the airflow output channel has a first area and a second area, and the air pressure of the first area is higher than that of the second area; the first radiating fins positioned in the first area have a first length, the second radiating fins positioned in the second area have a second length, and the first length is greater than the second length; or the length of the radiating fin is gradually increased from the first area to the second area; or, a first radiating fin with a first length and a second radiating fin with a second length are arranged in the first area and/or the second area at intervals, and the first length is larger than the second length.
Further, the airflow output channel has a first area and a second area, and the air pressure of the first area is higher than that of the second area; the width of the heat dissipation channel positioned in the first area is smaller than that of the heat dissipation channel positioned in the second area.
Furthermore, the first cooling fins positioned on two sides of the same second cooling fin are provided with airflow input channels communicated with the airflow output channels, the airflow input channels are communicated with first cooling channels with a first width and/or second cooling channels with a second width, and the first width is smaller than the second width.
Further, the airflow generating structure further comprises an airflow generator, and the airflow generator is used for providing airflow for the airflow output channel; the distance from the air inlet of the first heat dissipation channel to the air outlet of the airflow generator is smaller than a first threshold value; the distance from the air inlet of the second heat dissipation channel to the air outlet of the airflow generator is larger than a second threshold value; wherein the first threshold is less than or equal to the second threshold.
Further, the airflow generator is provided in plurality, and the airflow passage is provided in plurality.
Further, the distance between the adjacent radiating fins can be adjusted at least according to the air flow pressure output by the air flow output channel.
An embodiment of the present application further provides an electronic device, including the above heat dissipation apparatus.
According to the heat dissipation device and the electronic equipment provided by the embodiment of the application, the heat dissipation fin group is arranged, the heat dissipation fin group is provided with a plurality of heat dissipation channels formed by two adjacent heat dissipation fins, and the widths of the plurality of heat dissipation channels are not completely the same; therefore, the width of the heat dissipation channel in the area where the whole heat dissipation fin group is located is not completely consistent, and different areas have heat dissipation channels with different widths. The air flow parameters corresponding to different areas are not completely the same, and the areas with different air flow parameters can be correspondingly provided with heat dissipation channels with different widths, so that the air flows with different parameters can be fully utilized, the heat exchange rate of the heat dissipation fins is improved, and the performance of the heat dissipation device is improved.
Drawings
Fig. 1 is a schematic structural diagram of a first heat dissipation device according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a second heat dissipation device according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a third heat dissipation device according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a fourth heat dissipation device according to an embodiment of the present application.
Description of reference numerals:
1-a heat dissipation device, 11-a heat dissipation plate, 111-a first heat dissipation plate, 112-a second heat dissipation plate, 113-a third heat dissipation plate, 12-a heat dissipation channel, 121-a first heat dissipation channel, 122-a second heat dissipation channel, 123-a third heat dissipation channel, 20-an airflow generation structure, 21-an airflow output channel and 22-an airflow generator.
Detailed Description
Various combinations of the specific features in the embodiments described in the detailed description may be made without contradiction, for example, different embodiments may be formed by different combinations of the specific features, and in order to avoid unnecessary repetition, various possible combinations of the specific features in the present application will not be described separately.
In the description of the embodiments of the present application, it should be noted that, unless otherwise specified and limited, the term "connected" should be understood broadly, and may be directly connected or indirectly connected through an intermediate, and the specific meaning of the term may be understood by those skilled in the art according to specific situations.
It should be noted that the terms "first \ second" and "first \ second" referred to in the embodiments of the present application are only used for distinguishing similar objects and do not represent a specific ordering for the objects, and it should be understood that "first \ second" and "first \ second" may be interchanged under a specific order or sequence where permitted. It should be understood that "first \ second" distinguished objects may be interchanged where appropriate. Reference to the term "a plurality" in embodiments of the present application means greater than or equal to two.
The embodiment of the application provides a heat dissipation device, which can be arranged inside electronic equipment and used for dissipating heat of heating electronic components inside the electronic equipment. Specifically, the electronic device may include a mobile phone, a tablet computer, a notebook computer, a desktop computer, a display screen terminal, and the like. Those skilled in the art will appreciate that the electronic device for a particular application is not limited to a heat sink.
The working principle of the heat dissipation device is briefly described as follows: the heat dissipation device generally comprises a heat dissipation sheet and an airflow generation structure; the air flow generating structure is used for generating air flow and guiding the air flow to the radiating fins; the heat sink is generally in the shape of a sheet, and has a large surface area and a small thickness, thereby facilitating rapid heat conduction. The electronic equipment is provided with a plurality of heating electronic components, the airflow generated by the airflow generating mechanism can take away heat generated by the electronic components, and the airflow exchanges heat with the outside through the radiating fins, so that the heat in the radiating fins is diffused to the outside through the airflow to finish the heat dissipation of the electronic components.
As shown in fig. 1, a heat sink 1 according to an embodiment of the present application includes a fin group and an airflow generating structure 20. Wherein the fin group has a plurality of heat dissipation channels 12 formed by two adjacent fins 11. It should be noted that two adjacent heat dissipation fins 11 means that there is no additional heat dissipation fin or other solid component between the two heat dissipation fins 11, and there is only a space for air flow passing through, i.e., a heat dissipation channel 12, between the two adjacent heat dissipation fins 11. The same heat sink 11 may have different adjacent heat sinks in opposite directions, for example, the same heat sink 11 forms a heat dissipation channel with the left adjacent heat sink 11 and a heat dissipation channel with the right adjacent heat sink 11, respectively. The number of the fin groups may be plural, each of the fin groups has a plurality of heat dissipation channels 12 formed by two adjacent fins 11, and each of the fin groups is arranged in a row.
The airflow generating structure 20 has an airflow output channel 21 to transmit the generated airflow to the fin group through the airflow output channel 21. Specifically, the airflow generating structure 20 is a device for generating airflow, and may be a fan, for example. The airflow generating structure 20 has an airflow output channel 21 to output the generated airflow, and the specific setting position of the airflow output channel 21 can be determined according to the setting position of the electronic component inside the electronic device, so as to effectively take away the heat generated by the component through the airflow. Because the airflow generated by the airflow generating structure 20 has a certain pressure, the airflow still has a certain pressure when entering the fin group through the diversion of the airflow output channel 21, and the airflow enters each heat dissipation channel 12 of the fin group and contacts with the heat dissipation fins 11 for heat exchange. It should be noted that the air flow may enter each heat dissipation channel of each heat dissipation plate group to exchange heat with each heat dissipation plate, or may enter only a part of the heat dissipation channels to exchange heat with a part of the heat dissipation plates.
Wherein the widths of the plurality of heat dissipation channels 12 are not exactly the same. Namely: the width of all heat dissipation channels 12 in the same fin group is not unique. Specifically, the widths of the partial heat dissipation channels 12 may be different, and the widths of the partial heat dissipation channels 12 may be the same; it is also possible that the width of each heat dissipation channel 12 is different from the width of the other heat dissipation channels. A heat dissipation channel 12 is formed by two adjacent heat dissipation fins 11, two side walls of the heat dissipation channel 12 are two adjacent surfaces of the adjacent heat dissipation fins 11, generally, the two surfaces are substantially parallel, and the width of the heat dissipation channel is the distance between the two surfaces. It should be noted that the two surfaces forming the two side walls of the heat dissipation channel are substantially parallel, which means that a certain range of errors are allowed in a scene consistent with practical application, for example, from the viewpoint of processing technology and cost, the two surfaces are not required to be absolute planes, and curvature with a small value can be allowed under the condition that heat conduction and flow conduction are not affected, or the portions close to the end portions of the two surfaces are not planes but curved surfaces, as long as the requirements of planes can be met integrally. For another example, the planes of the two surfaces are substantially parallel, and the included angle between the two corresponding planes is not necessarily 0 degree, but may also be allowed to be a small value without affecting the heat conduction and the flow conduction, for example, the included angle between the two planes is less than 5 degrees or 10 degrees.
The widths of a plurality of heat dissipation channels of the heat dissipation fin group of the heat dissipation device in the embodiment of the application are not completely the same, and different areas have heat dissipation channels with different widths. Because the areas of the plurality of heat dissipation channels are different, the corresponding parameters of the inflowing air flow are different, and the areas with different air flow parameters can be correspondingly provided with the heat dissipation channels with different widths, so that the air flow with different parameters can be fully utilized, the heat exchange rate of the heat dissipation fins is improved, and the performance of the heat dissipation device is improved.
As shown in fig. 1, in some embodiments of the present application, the airflow output channel 21 has a first region and a second region, wherein the first region has an air pressure higher than the second region. Specifically, the air pressure in the first area and the air pressure in the second area are both in the working state, and the air flow generated by the air flow generating structure 20 acts on the air pressure in the first area and the air pressure in the second area. It will be appreciated that the first and second regions are not fixed regions, and that the first and second regions are determined by the airflow in the airflow generating structure 20.
As shown in fig. 1, in some embodiments of the present application, the first heat dissipation channel 121 located at the first region has a first width. The first heat dissipation channel 121 is a portion of the heat dissipation channel 12 located in the first area, that is, a portion of the heat dissipation channel 12 is the first heat dissipation channel 121, and the first heat dissipation channel 121 is disposed in the first area. The second heat dissipation channel 122 located at the second region has a second width. The second heat dissipation channel 122 is a portion of the heat dissipation channel 12 located in the second area, that is, a portion of the heat dissipation channel 12 is the second heat dissipation channel 122, and the second heat dissipation channel 122 is disposed in the second area. The width of the heat dissipation channel 12 is the distance between two adjacent heat dissipation fins 11 constituting the heat dissipation channel 12. Specifically, under the condition that two opposite surfaces of two adjacent cooling fins 11 forming the cooling channel 12 are parallel to each other, the distance between the two opposite surfaces of the two cooling fins 11 is the width of the cooling channel 12; under the condition that two opposite surfaces of two adjacent radiating fins 11 forming the radiating channel 12 are not parallel to each other or at least one of the two opposite surfaces is a curved surface, the average distance between the two opposite surfaces of the two radiating fins 11 is the width of the radiating channel 12.
Wherein the first width is less than the second width. That is, the first heat dissipation channel 121 is narrower than the second heat dissipation channel 122. Because the air pressure of the first area is greater than that of the second area, the flow velocity of the air flow in the first area is greater than that of the air flow in the second area, the air flow flows in the first heat dissipation channel 121 in the first area, and because the first heat dissipation channel 121 in the first area is narrower, the surface area capable of performing heat exchange in the same space is larger, so that the air flow and the heat dissipation fins 11 can complete efficient heat exchange, the flow velocity of the air flow passing through the first heat dissipation channel 121 is reduced due to the damping effect of the first heat dissipation channel 121, and the air pressure in the first area is high enough, so that the air flow can still pass smoothly and the heat can be taken away quickly; because the second heat dissipation channel 122 in the second area is wider, the surface area capable of exchanging heat in the same space is smaller, the damping effect of the second heat dissipation channel 122 on the air flow is smaller, and the air flow can be prevented from being stagnated or too slow in flow speed, so that the air flow can smoothly pass through the second heat dissipation channel 122, and the heat can be quickly taken away.
As shown in fig. 3, in another embodiment of the present application, a third area is disposed between the first area and the second area, the air pressure value of the third area is between the air pressure value of the first area and the air pressure value of the second area, and the third heat dissipation channel 123 located in the third area has a third width, and the third width is between the first width and the second width, that is, the third width is greater than the first width and smaller than the second width. So set up, can ensure that the air current in the third region can take place comparatively abundant heat exchange with the third fin 113 of constituteing third heat dissipation channel 123 to can be smoothly flowed by third heat dissipation channel 123, in order to take away the heat fast.
In another embodiment of the present application, the width of the heat dissipation channel 12 may also gradually increase from the first region to the second region. Because the air pressure is gradually reduced from the first area to the second area, the width of the heat dissipation channels 12 is gradually increased from the first area to the second area, so that the width of each heat dissipation channel 12 corresponds to the air pressure of the position where the heat dissipation channel is located, each heat dissipation channel 12 can be used for allowing air flow to smoothly pass through to quickly take away heat, and more sufficient heat exchange can be generated between the air flow and the heat dissipation fins 11 in the area with high enough air pressure, so that the effect of fully utilizing the air flow is achieved.
As shown in fig. 2, in some embodiments of the present application, the lengths of two adjacent fins 11 are not completely the same, that is, the lengths of two adjacent fins 11 are partially the same, and the lengths of two adjacent fins 11 are partially different, or all the lengths of two adjacent fins 11 are different. The longer radiating fins 11 have larger contact area with the airflow, so that more sufficient heat exchange can be carried out with the airflow in the process of passing the airflow; the contact area between the radiating fins 11 with shorter length and the air flow is smaller, so that the air flow can smoothly pass through the radiating fins in the process of passing through the air flow, and the air flow is prevented from being stagnated or the air flow speed is too slow, so that the heat can be quickly taken away.
As shown in fig. 2, in some embodiments of the present application, the first fins 111 in the first region have a first length. The first heat sink 111 is a portion of the heat sink 11 located in the first region, that is, a portion of the heat sink 11 is the first heat sink 111, and the first heat sink 111 is disposed in the first region. The second fins 112 in the second region have a second length. The second heat sink 112 is a portion of the heat sink 11 located in the second area, that is, a portion of the heat sink 11 is the second heat sink 112, and the second heat sink 112 is disposed in the second area. Length of the fins 11 have a length from one end of the fin 11 to the other end in the direction of the airflow.
Wherein the first length is greater than the second length. I.e., the first heat sink 111 is longer than the second heat sink 112. Because the air pressure of the first area is higher than that of the second area, the flow velocity of the air flow in the first area is higher than that of the air flow in the second area, the air flow is in contact with the first radiating fins 111 in the first area, and because the first radiating fins 111 in the first area are longer, the contact surface area of the air flow and the first radiating fins 111 is larger, so that the air flow and the first radiating fins 111 can complete efficient heat exchange, the flow velocity of the air flow passing through the first area is reduced due to the damping effect of the first radiating fins 111, the air pressure is sufficiently high, and the air flow can still pass smoothly and take away heat quickly; since the second heat dissipation fins 112 in the second region are shorter, the surface area of the air flow contacting the second heat dissipation fins 112 is smaller, the damping effect of the second heat dissipation fins 112 on the air flow is smaller, and the air flow can be prevented from stagnation or too slow flow, so that the air flow can smoothly pass through the second region and quickly take away heat.
In other embodiments of the present application, the length of the fins 11 may also gradually increase from the first region to the second region. Because the air pressure is gradually reduced from the first area to the second area, the length of each radiating fin 11 is gradually increased from the first area to the second area, the length of each radiating fin 11 can be corresponding to the air pressure at the position of the radiating fin, each radiating fin 11 can be fully contacted with the air flow to generate sufficient heat exchange, stagnation or over-slow flow rate of the air flow due to the damping effect is avoided, and the air flow can smoothly pass through to quickly take away heat.
As shown in fig. 4, in other embodiments of the present application, the first fins 111 having the first length and the second fins 112 having the second length are disposed at intervals, and the first fins 111 having the first length and the second fins 112 having the second length may be disposed at intervals in the first region or may be disposed at intervals in the second region. Since the second heat sink 112 is sandwiched between two adjacent first heat sinks 111, and the length of the first heat sink 111 is greater than that of the second heat sink 112, the second heat sink 112 may be completely located in the space between the two first heat sinks 111, there may be a partial area between the two adjacent first heat sinks 111 without the second heat sink 112, the partial region where the second heat radiation fins 112 are not provided in the middle is an airflow input passage, in the case where the airflow input passage is located at the inlet of the airflow flowing into the heat radiation passage 12, the airflow firstly enters between two adjacent first heat dissipation fins 111, and then enters into two heat dissipation channels 12 partitioned by the second heat dissipation fin 112 between the two adjacent first heat dissipation fins 111, where the two heat dissipation channels 12 partitioned by the second heat dissipation fin 112 may be both the first heat dissipation channel 121 or both the second heat dissipation channels 122, or one may be the first heat dissipation channel 121 and the other may be the second heat dissipation channel 122. Obviously, the distance between two adjacent first fins 111 is greater than the width of any one of the two heat dissipation channels 12 partitioned by the second fin 112, that is, the air flow first passes through the wide space formed by two adjacent first fins 111, and the space can guide the flow direction of the air flow, so that the flow direction of the air flow is consistent with the length direction of the heat dissipation channel 12, and then the air flow enters the heat dissipation channel 12 with the narrow width, and can fully exchange heat with the fins 11, and because the flow direction of the air flow is consistent with the length direction of the heat dissipation channel 12, the damping effect of the fins 11 on the air flow is reduced, so that the air flow can still smoothly flow out of the heat dissipation channel 12 after fully exchanging heat with the fins 11, and the heat can be quickly taken away.
In some embodiments of the present application, the spacing between adjacent fins 11 can be adjusted according to the pressure of the airflow output from the airflow output channel 21. Specifically, the heat sink 11 is slidably connected to the side wall of the heat dissipation channel 12, and the sliding direction of the heat sink 11 relative to the heat dissipation channel 12 is along the width direction of the heat dissipation channel 12. The distance between the adjacent fins 11 can be adjusted during the sliding of the fins 11 in the width direction of the heat dissipation channel 12, that is, the width of the heat dissipation channel 12 can be adjusted. Specifically, in the case where the pressure of the air flow output from the air flow output passage 21 is reduced, the heat dissipation fins 11 may be moved in the width direction of the heat dissipation passage 12 so as to increase the interval between the adjacent heat dissipation fins 11, that is, to increase the width of the heat dissipation passage 12. In the case where the pressure of the air flow output from the air flow output passage 21 is increased, the heat radiation fins 11 may be moved in the width direction of the heat radiation passage 12 to decrease the interval between the adjacent heat radiation fins 11, i.e., to decrease the width of the heat radiation passage 12.
In some embodiments of the present application, the movement of the heat sink 11 relative to the sidewall of the airflow output channel 21 may be controlled by a drive mechanism. In particular, the drive mechanism may be an electric motor. The motor may have one end fixedly connected to the side wall of the output passage and the other end drivingly connected to the heat sink 11. For example, a rack is disposed on the heat sink 11, an extending direction of the rack is parallel to a width direction of the heat dissipation channel 12, a gear engaged with the rack is disposed on the motor, the motor drives the gear to rotate, in a process of the gear rotating, the rack is driven to move along the width direction of the heat dissipation channel 12, and the motor can drive the heat sink 11 to move along the width direction of the heat dissipation channel 12.
As shown in fig. 4, in some embodiments of the present application, the airflow generating structure 20 further comprises an airflow generator 22, and the airflow generator 22 is used for providing airflow to the airflow output channel 21. Specifically, the airflow generator 22 may be a turbine, a fan, or the like, as long as it can provide airflow to the airflow output channel 21. In the case that the airflow generator 22 is a turbine, the outlet of the airflow generator 22 is disposed on the side of the turbine (e.g., Y area in fig. 4) facing the airflow output channel 21 in the rotation direction (e.g., X direction in fig. 4).
As shown in fig. 4, in some embodiments of the present disclosure, a distance from the air inlet of the first heat dissipation channel 121 to the air outlet of the airflow generator 22 is smaller than a first threshold, and a distance from the air inlet of the first heat dissipation channel 121 to the air outlet of the airflow generator 22 is a straight distance therebetween. The distance from the air inlet of the second heat dissipation channel 122 to the air outlet of the airflow generator 22 is greater than the second threshold, and the distance from the air inlet of the second heat dissipation channel 122 to the air outlet of the airflow generator 22 is also the straight distance therebetween. And the first threshold is greater than or equal to the second threshold. That is, the distance from the air inlet of the first heat dissipation channel 121 to the air outlet of the airflow generator 22 is smaller than the distance from the air inlet of the second heat dissipation channel 122 to the air outlet of the airflow generator 22, that is, the first heat dissipation channel 121 is closer to the air outlet of the airflow generator 22, so that the area where the first heat dissipation channel 121 is located is the first area; the second heat dissipation channel 122 is far away from the air outlet of the airflow generator 22, so that the area where the second heat dissipation channel 122 is located is the second area.
In some embodiments of the present application, the airflow generator 22 in each airflow generating structure 20 may be provided in plurality, and the airflow generator 22 acts on the airflow output channel 21 together. Wherein the air pressure is higher in the region where the effect of the plurality of air flow generators 22 is enhanced, the region where the effect of the plurality of air flow generators 22 is enhanced may be a first region and the region where only a single air flow generator 22 is affected or the region where only a small number of air flow generators 22 are affected may be a second region. In particular, the region in which the airflow generator 22 is active refers to the region through which the airflow generated by the airflow generator 22 flows; the region in which the plurality of flow generators 22 are active at an increased level means that the flows generated by the plurality of flow generators 22 may flow together through a region in which the flows generated by the plurality of flow generators 22 are substantially identical, for example the flow generated by the plurality of flow generators 22 may not make an angle of more than 5 ° or 10 °.
In some embodiments of the present application, the number of the airflow channels in each airflow generating structure 20 may be multiple, that is, the airflow generating structure 20 has multiple air outlets. Since the maximum value of the air pressure of the air flow generated by each air flow generator 22 is fixed, it is necessary to increase the number of air flow generators 22, that is, the number of air flow channels is determined according to the number of air flow generators 22, in order to ensure that the air pressure in the plurality of air flow channels is sufficient. For example, in a state where only one airflow generator 22 is provided in the airflow generating structure 20, the airflow passage may be provided as only one; in a state where two airflow generators 22 are provided in the airflow generating structure 20, the airflow passages may be provided in two. The airflow generating structure 20 formed by the plurality of airflow generators 22 and the plurality of airflow channels may have efficient heat dissipation performance.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A heat dissipation device, comprising:
the radiating fin group is provided with a plurality of radiating channels formed by two adjacent radiating fins;
the airflow generation structure is provided with an airflow output channel so as to give the generated airflow to the radiating fin group through the airflow output channel;
wherein the widths of the plurality of heat dissipation channels are not completely the same.
2. The heat sink of claim 1, the airflow output channel having a first region and a second region, the first region having a higher air pressure than the second region;
the first heat dissipation channel positioned in the first area has a first width, the second heat dissipation channel positioned in the second area has a second width, and the first width is smaller than the second width; or the like, or, alternatively,
the width of the heat dissipation channel gradually increases from the first region to the second region.
3. The heat dissipating device of claim 1, wherein the lengths of adjacent fins are not exactly the same.
4. The heat sink of claim 3, the airflow output channel having a first region and a second region, the first region having a higher air pressure than the second region;
the first radiating fins positioned in the first area have a first length, the second radiating fins positioned in the second area have a second length, and the first length is greater than the second length; or the like, or, alternatively,
the length of the radiating fin is gradually increased from the first area to the second area; or the like, or, alternatively,
the first radiating fins with first lengths and the second radiating fins with second lengths are arranged in the first area and/or the second area at intervals, and the first lengths are larger than the second lengths.
5. The heat sink of claim 3, the airflow output channel having a first region and a second region, the first region having a higher air pressure than the second region;
the width of the heat dissipation channel positioned in the first area is smaller than that of the heat dissipation channel positioned in the second area.
6. The heat dissipating device of claim 4, wherein the first fins on both sides of the same second fin are formed with an airflow input channel communicating with the airflow output channel, the airflow input channel communicating with a first heat dissipating channel having a first width and/or a second heat dissipating channel having a second width, the first width being smaller than the second width.
7. The heat dissipating device of claim 5, said airflow generating structure further comprising an airflow generator for providing airflow to said airflow output channel;
the distance from the air inlet of the first heat dissipation channel to the air outlet of the airflow generator is smaller than a first threshold value; the distance from the air inlet of the second heat dissipation channel to the air outlet of the airflow generator is larger than a second threshold value;
wherein the first threshold is less than or equal to the second threshold.
8. The heat dissipating device of claim 7, wherein said airflow generator is provided in plurality and said airflow channel is provided in plurality.
9. The heat dissipating device of any of claims 1 to 8, wherein the spacing between adjacent fins is adjustable at least in accordance with the pressure of the airflow output from the airflow output channel.
10. An electronic device, characterized by comprising the heat dissipating apparatus according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010621723.9A CN111741655B (en) | 2020-06-30 | 2020-06-30 | Heat dissipation device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010621723.9A CN111741655B (en) | 2020-06-30 | 2020-06-30 | Heat dissipation device and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111741655A true CN111741655A (en) | 2020-10-02 |
| CN111741655B CN111741655B (en) | 2022-03-25 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553059A (en) * | 2003-06-05 | 2004-12-08 | 建亨精密股份有限公司 | Radiating fan structure |
| CN101115367A (en) * | 2006-07-28 | 2008-01-30 | 富准精密工业(深圳)有限公司 | Heat radiating device |
| CN102083299A (en) * | 2011-01-25 | 2011-06-01 | 富泰华工业（深圳）有限公司 | Electronic device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553059A (en) * | 2003-06-05 | 2004-12-08 | 建亨精密股份有限公司 | Radiating fan structure |
| CN101115367A (en) * | 2006-07-28 | 2008-01-30 | 富准精密工业(深圳)有限公司 | Heat radiating device |
| CN102083299A (en) * | 2011-01-25 | 2011-06-01 | 富泰华工业（深圳）有限公司 | Electronic device |
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