CN107131158B - Heat dissipation system and operation method thereof - Google Patents
Heat dissipation system and operation method thereof Download PDFInfo
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- CN107131158B CN107131158B CN201710340118.2A CN201710340118A CN107131158B CN 107131158 B CN107131158 B CN 107131158B CN 201710340118 A CN201710340118 A CN 201710340118A CN 107131158 B CN107131158 B CN 107131158B
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 52
- 230000005389 magnetism Effects 0.000 claims description 8
- 238000002788 crimping Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims 1
- 230000000737 periodic effect Effects 0.000 description 9
- 238000005265 energy consumption Methods 0.000 description 7
- 238000003825 pressing Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000001668 ameliorated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D33/00—Non-positive-displacement pumps with other than pure rotation, e.g. of oscillating type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Micromachines (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A heat dissipation system comprises a driving chip and a heat dissipation device electrically connected to the driving chip. The heat dissipation device comprises a bearing piece, a magnetic driving module and a swinging structure, wherein the magnetic driving module and the swinging structure are arranged on the bearing piece. The driving chip can execute a test function so as to sequentially transmit multiple test signals with different frequencies to the magnetic driving module and measure the current value in the magnetic driving module corresponding to each test signal. The lowest current value among the plurality of current values is defined as an operation current value, and a test signal corresponding to the operation current value is defined as a driving signal. The driving chip can execute a driving function to continuously transmit driving signals to the magnetic driving module, so that the magnetic driving module drives the swinging structure to swing. In addition, the invention also discloses an operation method of the heat dissipation system.
Description
Technical Field
The present disclosure relates to heat dissipation systems, and particularly to a heat dissipation system and an operating method thereof.
Background
The present inventors have previously proposed a heat dissipating device (taiwan patent No. M529149) capable of achieving a rapid heat dissipation effect through the swing of the blades. However, how to improve the heat dissipation device to reduce the energy consumption of the heat dissipation device is one of the goals of the present inventor.
Accordingly, the present inventors considered that the above-mentioned drawbacks could be ameliorated, and have made intensive studies and combined with the application of scientific principles, and finally, have proposed an invention which is reasonable in design and effectively ameliorates the above-mentioned drawbacks.
Disclosure of Invention
First, the technical problem to be solved
The embodiment of the invention provides a heat dissipation system and an operation method thereof, which can effectively improve the possible defects of the existing heat dissipation device.
(II) technical scheme
The embodiment of the invention discloses a heat dissipation system, which comprises: the driving chip can selectively execute a test function and a driving function; and a heat sink device comprising: a carrier; the magnetic driving module is arranged on the bearing piece and is electrically connected with the driving chip, and the magnetic driving module can be used for generating a magnetic field so as to form two magnetic force areas with opposite magnetism; the driving chip can execute the test function to sequentially transmit multiple test signals with different frequencies to the magnetic driving module and measure a current value in the magnetic driving module corresponding to each test signal; the lowest current value in the plurality of current values is defined as an operation current value, and a test signal corresponding to the operation current value is defined as a driving signal; the at least one swinging structure comprises a blade and an actuating magnetic part arranged on the blade, the blade is arranged on the bearing part, and the actuating magnetic part is positioned in one of the two magnetic force areas; the driving chip can execute the driving function to continuously transmit the driving signal to the magnetic driving module, so that the magnetic driving module drives the two magnetic force areas to periodically reciprocate through the driving of the driving signal, and the actuating magnetic piece is driven by the corresponding magnetic force area to displace, so that the blade swings.
The embodiment of the invention also discloses an operation method of the heat dissipation system, which comprises the following steps: providing a heat dissipation device and a driving chip electrically connected to the heat dissipation device; the heat dissipation device comprises a bearing piece, a magnetic driving module arranged on the bearing piece and at least one swinging structure arranged on the magnetic driving module; executing a test function by the driving chip, sequentially transmitting multiple test signals with different frequencies to the magnetic driving module, and measuring a current value in the magnetic driving module corresponding to each test signal; the test signal corresponding to the lowest current value in the current values is defined as a driving signal; and executing a driving function by the driving chip to continuously transmit the driving signal to the magnetic driving module, so that the magnetic driving module generates two magnetic force areas with periodically reciprocating magnetism through the driving of the driving signal, and at least one swinging structure is driven to swing.
(III) beneficial effects
In summary, according to the heat dissipation system and the operation method thereof disclosed in the embodiments of the present invention, the test function is performed to obtain the current frequency that can resonate with the blade of the heat dissipation device, so that the driving chip can input the current that resonates with the blade when performing the driving function, and the energy consumption of the heat dissipation device is reduced.
For a further understanding of the nature and the technical aspects of the present invention, reference should be made to the following detailed description of the invention and the accompanying drawings, which are included to illustrate and not to limit the scope of the invention.
Drawings
FIG. 1 is a functional block diagram of a heat dissipation system according to the present invention.
Fig. 2 is a schematic perspective view of a heat dissipating device of the heat dissipating system of the present invention.
Fig. 3 is an exploded view of fig. 2.
Fig. 4 is a schematic plan view of fig. 2.
Fig. 5 is a schematic cross-sectional view of fig. 2 along section line V-V.
Fig. 6 is an enlarged partial view of the VI area in fig. 5.
Fig. 7 is a schematic plan view of another example of a heat dissipating device of the heat dissipating system of the present invention.
Fig. 8 is an exploded perspective view of fig. 7.
Fig. 9 is a schematic cross-sectional view of fig. 7.
Fig. 10 is a partially enlarged schematic view of the X portion in fig. 9.
Fig. 11 is a schematic diagram illustrating the operation of fig. 2.
Fig. 12 is another operation diagram of fig. 2.
[ symbolic description ]
1000: a heat dissipation system; 100: a heat sink; 1: a carrier; 11: a base; 111: an inner side surface; 112: an outer side surface; 113: an end face; 114: locking the hole; 12: a connection part; 2: a magnetic driving module; 21: a core; 22: a coil; 3: a swinging structure; 31: a blade; 311: a mounting end; 312: a free end; 32: a bracket (e.g., a metal bracket); 321: a housing part; 322: a positioning part; 33: positioning rivets; 331: a shaft portion; 332: a crimping part; 34: actuating the magnetic member; 4: a fixing member; 41: a pressing plate; 42: a rivet; d1, D2, D3: an outer diameter; 200: a driving chip; 201: a control module; 2011: a storage unit; 202: a power supply module; 203: a feedback module; p: a periodic power supply.
Detailed Description
Referring to fig. 1 to 12, it should be noted that the number and shape of the embodiments corresponding to the drawings are merely for illustrating the embodiments of the present invention, so as to facilitate understanding of the present invention, and are not intended to limit the scope of the present invention.
Referring to fig. 1 and 2, the present embodiment discloses a heat dissipation system 1000, which includes a heat dissipation device 100 and a driving chip 200 electrically connected to the heat dissipation device 100, wherein the driving chip 200 is used for receiving a periodic power P and selectively performing a test function and a driving function, but the driving chip 200 of the present invention is not limited to receiving the periodic power P.
It should be noted that, in the present embodiment, the driving chip 200 is electrically connected to the single heat dissipating device 100, but the present invention is not limited thereto, that is, the driving chip 200 may be electrically connected to a plurality of heat dissipating devices 100. The construction of the heat sink 100 will be described first, and then the connection relationship between the driving chip 200 and the heat sink 100 will be described.
As shown in fig. 3 to 6, the heat dissipating device 100 includes a carrier 1, a magnetic driving module 2, two swinging structures 3, and a plurality of fixing members 4. The magnetic driving module 2 is mounted on the carrier 1 and electrically connected to the driving chip 200, and the two swinging structures 3 are mounted on the carrier 1 through the plurality of fixing members 4 and correspond to the positions of the magnetic driving module 2. The number of the fixing members 4 in the present embodiment is two, for example, to fix the two swinging structures 3 to the carrier 1 respectively, but the present invention is not limited thereto.
It should be noted that, in the embodiment, the swinging structure 3 is applied to the carrier 1, the magnetic driving module 2, and the fixing member 4, but the application range of the swinging structure 3 is not limited thereto.
The carrier 1 is of a structure suitable for manufacturing by injection molding, the carrier 1 comprises two bases 11 and a connecting part 12 which connects the two bases 11 and is in a circular tube shape, and the two bases 11 are in mirror symmetry with the connecting part 12. Since the two bases 11 are substantially identical in configuration, only one of the bases 11 is described in this paragraph for the convenience of understanding the present embodiment.
The base 11 includes an inner side 111 and an outer side 112, and two end surfaces 113. The top end portion of the inner side 111 is connected to the connecting portion 12, the shapes of the two end faces 113 are substantially the same, and at least one end face 113 of the two end faces 113 is concavely formed with a locking hole 114, so that the carrier 1 can be fixed at any position through the locking hole 114 by a screw (not shown in the figure). Furthermore, the locking hole 114 may be a blind hole or a through hole.
The magnetic driving module 2 can be used to generate a magnetic field (not shown) to form two magnetic force regions (not shown, corresponding to the adjacent left side region and the adjacent right side region of the magnetic driving module 2 in fig. 4) with opposite magnetism. Furthermore, the magnetic driving module 2 can be driven by the electric power input from the driving chip 200 to periodically reciprocate the magnetism of the two magnetic force regions. The periodic power source may be a periodic square wave, a triangular wave, a sine wave, or positive and negative half cycles of an alternating current, and the periodic power source of the present embodiment is illustrated by taking the positive and negative half cycles of the alternating current as an example, but is not limited thereto.
In more detail, the magnetic driving module 2 of the present embodiment includes an elongated core 21 (e.g. iron core) and a coil 22, wherein the core 21 is tightly inserted into the connecting portion 12 of the carrier 1, and the coil 22 is wound around the outer edge of the connecting portion 12 of the carrier 1. The coil 22 is electrically connected to the periodic power source, so that when the current of the periodic power source passes through the coil 22, the coil 22 and the core 21 generate a magnetic field, and the two magnetic force regions with opposite magnetic properties periodically and reciprocally change with time.
Since the construction of the two swing structures 3 is substantially the same in the present embodiment, a description will be given below of the construction of one of the swing structures 3 for the convenience of understanding the above swing structures 3.
The swing structure 3 includes a blade 31, a bracket 32, a positioning rivet 33, and an actuating magnetic member 34. The bracket 32 is fixed to the blade 31 by the above-mentioned positioning rivet 33, and the actuating magnetic member 34 is (detachably) fixed to the bracket 32. By this, the oscillating structure 3 can be provided with the brackets 32 by positioning rivets 33 on the blades 31, so as to avoid the problem of breaking the actuating magnetic member 34 and effectively reduce the production cost of the oscillating structure 3.
Wherein the blade 31 is a single rectangular sheet and is preferably a glass fiber blade or a polyester film blade, the blade 31 includes a mounting end 311 and a free end 312 remote from the mounting end 311, and the positioning rivet 33 is located between the mounting end 311 and the free end 312 of the blade 31.
The positioning rivet 33 may be made of plastic or metal and comprises a shaft 331 and two crimping portions 332, wherein the two crimping portions 332 are integrally connected to opposite end edges of the shaft 331, and an outer diameter of each crimping portion 332 is larger than an outer diameter of the shaft 331. The shaft 331 of the positioning rivet 33 is inserted into the bracket 32 and the blade 31, and the two pressing portions 332 are pressed against the bracket 32 and the blade 31, respectively. In each positioning rivet 33 of the present embodiment, the shaft 331 and each pressing portion 332 are hollow, but the present invention is not limited to solid.
The bracket 32 is illustrated by taking a bracket 32 as an example in the present embodiment, the actuating magnetic member 34 is illustrated by taking a circular magnet as an example, and the actuating magnetic member 34 is magnetically fixed to the bracket 32. It should be noted that, the actuating magnetic member 34 is not formed with any perforation, and thus, any actuating magnetic member formed with perforation is not the actuating magnetic member 34 according to the present embodiment. In addition, in the embodiment not shown, the bracket 32 may also be a non-metal bracket (e.g., a plastic bracket), and the actuating magnetic member 34 is fixed to the bracket 32 by adhesion or the like.
Further, the bracket 32 includes a groove-shaped receiving portion 321 and a positioning portion 322 extending outward from a periphery of the receiving portion 321. The positioning rivet 33 is partially (e.g., the press-fit portion 332) located in the receiving portion 321, and the positioning rivet 33 presses and fixes the receiving portion 321 to the blade 31, and the positioning portion 322 is located at a side of the receiving portion 321 away from the blade 31 (e.g., a left side of the receiving portion 321 in fig. 6).
Furthermore, the positioning portion 322 is configured as a slot in the present embodiment for limiting the position of the actuating magnetic member 34 relative to the positioning rivet 33 (e.g. the actuating magnetic member 34 is limited to the edge of the positioning portion 322), such that the center of the actuating magnetic member 34 corresponds to the center of the positioning rivet 33, but the invention is not limited thereto. For example, in the embodiment not shown, the positioning portion 322 may be configured in a plane parallel to the blade 31, and the actuating magnetic member 34 is fixed to the positioning portion 322.
In the present embodiment, the outer diameter D1 of the contact area between the blade 31 and the (receiving portion 321 of the) bracket 32 is preferably not greater than twice the outer diameter D2 of the contact area between the blade 31 and the positioning rivet 33. Furthermore, the outer diameter D1 of the contact area between the blade 31 and (the receiving portion 321 of) the bracket 32 is not greater than 1/2 (preferably 1/3) of the outer diameter D3 of the actuating magnetic member 34.
Therefore, compared with the conventional actuating magnetic member directly fixed on the blade (for example, the novel patent of taiwan No. M529149), the blade 31 and the bracket 32 of the embodiment have smaller contact area, so that the blade 31 basically does not generate stress concentration in the swinging process, thereby effectively prolonging the service life of the blade 31.
It should be noted that, the swinging structure 3 shown in fig. 2 to 6 is exemplified by a single bracket 32 and a single actuating magnetic member 34, and the bracket 32 and the actuating magnetic member 34 are both facing the magnetic driving module 2, but the invention is not limited thereto. For example, the bracket 32 and the actuating magnetic member 34 may both face away from the magnetic driving module 2 (not shown).
Alternatively, as shown in fig. 7 to 10, the number of brackets 32 (e.g., brackets 32) and the number of actuating magnetic members 34 of the swing structure 3 are further limited to two. Wherein the two brackets 32 (e.g., brackets 32) are respectively fixed to opposite sides of the blade 31 by positioning rivets 33, and the two actuating magnetic members 34 are respectively (magnetically) fixed to the two brackets 32 (e.g., brackets 32). The shaft 331 of the positioning rivet 33 passes through the receiving portions 321 of the two brackets 32 and the blade 31, and the two press-contact portions 332 are respectively located in the receiving portions 321 of the two brackets 32 and are respectively pressed against the receiving portions 321 of the two brackets 32.
In addition, the swing structure 3 shown in fig. 7 to 10 includes the same two brackets 32 and the same two actuating magnetic members 34, but the present invention is not limited thereto. That is, in the embodiment not shown, the two brackets 32 may be configured differently, and the two actuating magnetic members 34 may be configured differently.
As shown in fig. 3 to 6, the two fixing members 4 fix the mounting ends 311 of the two blades 31 to opposite outer sides of the carrier 1, respectively, and locate the two actuating magnetic members 34 in two magnetic force regions, respectively. In more detail, each fixing member 4 of the present embodiment includes a pressing plate 41 and two rivets 42, and a description will be given below about each fixing member 4 and its corresponding blade 31 and base 11. The pressing plate 41 clamps the mounting end 311 of the blade 31 with the bottom of the outer side surface 112 of the base 11, and each rivet 42 sequentially passes through the pressing plate 41, the mounting end 311 of the blade 31, and the base 11, thereby fixing the mounting end 311 of the blade 31 to the base 11 of the carrier 1. The pressing plate 41 of the present embodiment may be a hard acrylic plate or a soft rubber plate, and the present invention is not limited thereto.
As described above, the structure and the connection relationship of the heat dissipating device 100 according to the present embodiment are described, and accordingly, when the magnetic driving module 2 is driven by the electric power input from the driving chip 200 to generate the magnetic field, the two actuating magnetic members 34 are respectively driven by the two magnetic force regions to displace, so that the free end 312 of each blade 31 swings. The swinging directions of the two blades 31 of the heat dissipating device 100 may swing in the same direction as shown in fig. 11 or in opposite directions as shown in fig. 12, which is not limited herein.
As shown in fig. 1 and 2, the driving chip 200 can obtain the current frequency that can resonate with the blade 31 of the heat dissipating device 100 by performing the test function, so that the driving chip 200 can input the current that resonates with the blade 31 when performing the driving function, thereby reducing the energy consumption of the heat dissipating device 100.
In more detail, the driving chip 200 can perform a testing function to sequentially transmit multiple test signals with different frequencies to the magnetic driving module 2, and measure a current value in the magnetic driving module 2 corresponding to each test signal (as shown in the following table). Wherein the lowest current value of the plurality of current values (e.g. Z 10 mA or a predetermined current value) is defined as an operation current value, and the test signal corresponding to the operation current value is defined as a driving signal. That is, in the process of executing the test function by the driving chip 200, the blade 31 of the heat dissipating device 100 is substantially resonant to the operation current value (e.g. Z 10 mA) corresponds to a frequency (e.g.: 50 Hz).
Accordingly, the driving chip 200 can perform a driving function to continuously transmit the driving signal to the magnetic driving module 2, so that the magnetic driving module 2 is driven by the driving signal to periodically reciprocate the magnetism of the two magnetic force regions, and the actuating magnetic member 34 is driven by the corresponding magnetic force region to displace, so as to swing the blade 31.
The test function and the driving function of the driving chip 200 described above can be implemented by various manners such as software or hardware design, so that it is difficult to introduce all possible examples one by one in the present embodiment, and only one of the following implementation examples is used to describe the driving chip 200.
The driving chip 200 includes a control module 201, a power supply module 202 electrically connected to the control module 201, and a feedback module 203 electrically connected to the control module 201 and the magnetic driving module 2. When the driving chip 200 performs the test function, the power supply module 202 can sequentially output multiple test signals with different frequencies to the magnetic driving module 2 according to the instruction of the control module 201, so that the magnetic driving module 2 operates at different current values (as shown in the table above). The feedback module 203 can detect a plurality of current values corresponding to the plurality of test signals, respectively, and transmit the plurality of current values to the control module 201.
The control module 201 can be provided with a storage unit 2011 for storing the data transmitted by the feedback module 203. The control module 201 may define a lowest current value among the plurality of current values as an operation current value and a test signal corresponding to the operation current value as a driving signal.
Accordingly, when the driving chip 200 performs the driving function, the control module 201 can enable the power supply module 202 to continuously transmit the driving signal to the magnetic driving module 2 of the heat dissipating device 100, so that the blade 31 of the heat dissipating device 100 can be approximately resonated with the frequency of the driving signal, and the heat dissipating device 100 can be operated in a lower energy consumption mode.
It should be noted that, the driving chip 200 can perform testing functions at different time points according to the requirements of the designer, for example: when the heat dissipating device 100 is about to start to operate, the driving chip 200 can perform a test function to measure an operation current value suitable for the heat dissipating device 100.
In addition, since the heat sink 100 is operated for a period of time, the blade 31 may be aged, stained with dust, or other factors, which may cause a change in the frequency of the current that the blade 31 can resonate. Therefore, the driving chip 200 can periodically perform the test function to redefine the operation current value and the corresponding driving signal, so that the heat dissipating device 100 can be continuously in the low power consumption mode.
Or, the control module 201 can monitor a real-time current value in the magnetic driving module 2 through the feedback module 203 when the driving chip 200 performs the driving function, and the control module 201 can start the driving chip 200 to perform the testing function when the difference between the real-time current value and the running current value exceeds a specific difference value, so as to redefine the running current value and the corresponding driving signal, and further enable the heat dissipating device 100 to be in a lower energy consumption mode continuously.
The specific difference can be adjusted and changed according to the needs of the user, and the specific difference in the embodiment is 0.1% -5% (preferably 3% -5%) of the running current value, so as to facilitate the heat dissipating device 100 to be in a lower energy consumption mode continuously, but the specific difference in the invention is not limited thereto.
It should be noted that the driving chip 200 may be mounted on the carrier 1 of the heat dissipating device 100, or the driving chip 200 and the heat dissipating device may be separately disposed, which is not limited herein.
The foregoing describes the heat dissipation system 1000 of the present embodiment, please refer to fig. 1, which generally describes the operation method of the heat dissipation system 1000, but the present invention is not limited thereto.
Step S110: the heat dissipating device 100 and the driving chip 200 electrically connected to the heat dissipating device 100 and receiving the periodic power P are provided. For a specific structure of the heat dissipating device 100 and a possible implementation example of the driving chip, please refer to the above description of the present embodiment, and the description is omitted here.
Step S120: the driving chip 200 is used for executing a test function, so as to sequentially transmit multiple test signals with different frequencies to the magnetic driving module 2 and measure a current value (the table above) in the magnetic driving module 2 corresponding to each test signal; the driving chip 200 can define the test signal corresponding to the lowest current value among the plurality of current values as a driving signal.
Step S130: the driving chip 200 is used for executing a driving function to continuously transmit the driving signal to the magnetic driving module 2 of the heat dissipating device 100, so that the magnetic driving module 2 generates two magnetic force areas with periodically changing magnetism in a reciprocating manner by driving the driving signal, so as to drive the swinging structure 3 of the heat dissipating device 100 to swing.
It should be noted that, the driving chip 200 can execute the step S120 at different time points according to the requirements of the designer, for example: when the heat dissipating device 100 is about to operate, the driving chip 200 can first perform step S120 to facilitate measuring an operating current value suitable for the heat dissipating device 100; alternatively, the driving chip 200 periodically performs (e.g., once every 5 days) step S120 (test function) to redefine the operation current value and the corresponding driving signal; alternatively, in the process of the driving chip 200 executing the step S130 (driving function), the driving chip 200 monitors a real-time current value in the magnetic driving module 2, and when the real-time current value differs from the operation current value by more than a specific difference (e.g. 0.1% -5% of the operation current value), the driving chip 200 executes the step S120 (testing function) to redefine the operation current value and the corresponding driving signal.
[ technical efficacy of the embodiment of the invention ]
In summary, the heat dissipation system and the operation method thereof disclosed in the embodiments of the present invention can obtain the current frequency that can resonate with the blade of the heat dissipation device by executing the test function, so that the driving chip can input the current that resonates with the blade when executing the driving function, and further reduce the energy consumption of the heat dissipation device.
Furthermore, the heat dissipating device and the swing structure thereof disclosed by the embodiment of the invention can prevent the cracking problem of the actuating magnetic piece and effectively reduce the production cost of the heat dissipating device (or the swing structure) by arranging the bracket (or the metal bracket) on the blade through the positioning rivet.
In addition, compared with the existing structure that the actuating magnetic member is directly fixed on the blade, the outer diameter of the contact area between the blade and the bracket is not more than 1/2 times of the outer diameter of the actuating magnetic member (or the outer diameter of the contact area between the blade and the bracket is not more than twice of the outer diameter of the contact area between the blade and the positioning rivet), so that stress concentration is basically avoided in the process of swinging the blade, and the service life of the blade is effectively prolonged.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, but all equivalent changes and modifications according to the claims of the present invention shall fall within the scope of the claims.
Claims (8)
1. A heat dissipation system, comprising:
a heat sink, comprising:
a carrier;
the magnetic driving module is arranged on the bearing piece and is electrically connected with the driving chip, and the magnetic driving module can be used for generating a magnetic field so as to form two magnetic force areas with opposite magnetism; and
The driving chip can selectively execute a test function and a driving function; the driving chip comprises:
a control module;
the power supply module is electrically connected with the control module and can sequentially output multiple test signals with different frequencies to the magnetic force driving module through the indication of the control module so that the magnetic force driving module operates under different current values; and
The feedback module is electrically connected with the control module, and can be used for measuring a plurality of current values corresponding to the test signals and transmitting the current values to the control module; the control module can enable the power supply module to continuously transmit a driving signal to the magnetic driving module; the driving chip can execute the test function to sequentially transmit multiple test signals with different frequencies to the magnetic driving module and measure a current value in the magnetic driving module corresponding to each test signal; the lowest current value in the plurality of current values is defined as an operation current value, and a test signal corresponding to the operation current value is defined as a driving signal; and
the at least one swinging structure comprises a blade and an actuating magnetic part arranged on the blade, the blade is arranged on the bearing part, and the actuating magnetic part is positioned in one of the two magnetic force areas; the blade comprises a mounting end part fixed on the bearing piece and a free end part far away from the mounting end part, at least one swinging structure comprises a bracket and a positioning rivet, the bracket is fixed on the blade through the positioning rivet, the positioning rivet is positioned between the mounting end part and the free end part, and the actuating magnetic piece is not provided with any perforation and is fixed on the bracket; the positioning rivet comprises a shaft part and two crimping parts, wherein the two crimping parts are respectively integrally connected with two opposite end edges of the shaft part, the shaft part of the positioning rivet penetrates through the bracket and the blade, and the two crimping parts are respectively pressed on the bracket and the blade;
the driving chip can execute the driving function to continuously transmit the driving signal to the magnetic driving module, so that the magnetic driving module drives the two magnetic force areas to periodically reciprocate through the driving of the driving signal, and the actuating magnetic piece is driven by the corresponding magnetic force area to displace, so that the blade swings.
2. The heat dissipating system of claim 1, wherein said control module is capable of monitoring a real-time current value in said magnetic drive module via said feedback module while said drive chip is performing said drive function; and the control module can start the driving chip to execute the test function when the real-time current value and the running current value differ by more than a specific difference value so as to redefine the running current value and the corresponding driving signal.
3. The heat dissipation system of claim 2, wherein the specific difference is 0.1% -5% of the operating current value.
4. The heat dissipating system of claim 1, wherein the driver chip is capable of periodically performing the test function to redefine the operating current value and the corresponding driving signal.
5. The heat dissipating system of claim 1, wherein said bracket comprises a slot-like receiving portion and a positioning portion extending outwardly from a periphery of said receiving portion; the part of the positioning rivet is positioned in the accommodating part, and the positioning rivet presses and fixes the accommodating part on the blade; the outer diameter of the contact area of the blade and the accommodating part is not more than 1/2 times of the outer diameter of the actuating magnetic member.
6. A method of operating a heat dissipating system according to any one of claims 1-5, comprising:
providing a heat dissipation device and a driving chip electrically connected to the heat dissipation device; the heat dissipation device comprises a bearing piece, a magnetic driving module arranged on the bearing piece and at least one swinging structure arranged on the magnetic driving module;
executing a test function by the driving chip, sequentially transmitting multiple test signals with different frequencies to the magnetic driving module, and measuring a current value in the magnetic driving module corresponding to each test signal; the lowest current value in the plurality of current values is defined as an operation current value, and a test signal corresponding to the operation current value is defined as a driving signal; and
and executing a driving function by the driving chip to continuously transmit the driving signal to the magnetic driving module, so that the magnetic driving module generates two magnetic force areas with periodically reciprocating magnetism through the driving of the driving signal, and at least one swinging structure is driven to swing.
7. The method according to claim 6, wherein the driving chip monitors a real-time current value in the magnetic driving module during the driving function of the driving chip, and when the real-time current value differs from the operating current value by more than a specific difference value, the driving chip performs the test function to redefine the operating current value and the corresponding driving signal; wherein the specific difference value is 0.1% -5% of the running current value.
8. The method of claim 6, wherein the driving chip periodically performs the test function to redefine the operation current value and the driving signal.
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| TW106112211 | 2017-04-12 | ||
| TW106112211A TWI625037B (en) | 2017-04-12 | 2017-04-12 | Heat dissipating system and operating method thereof |
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| TW201838316A (en) | 2018-10-16 |
| TWI625037B (en) | 2018-05-21 |
| CN206738266U (en) | 2017-12-12 |
| CN107131158A (en) | 2017-09-05 |
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