CN209133833U - Laser reciprocation cycle cooling heat sink - Google Patents
Laser reciprocation cycle cooling heat sink Download PDFInfo
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- CN209133833U CN209133833U CN201821737078.1U CN201821737078U CN209133833U CN 209133833 U CN209133833 U CN 209133833U CN 201821737078 U CN201821737078 U CN 201821737078U CN 209133833 U CN209133833 U CN 209133833U
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- heat sink
- water
- cooling
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- reciprocation cycle
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- Semiconductor Lasers (AREA)
Abstract
The utility model discloses a kind of laser reciprocation cycle cooling heat sinks, including heat sink main body and the cooling fin that heat sink main body front end is arranged in, wherein cooling fin includes chip package region and multiple groups radiation tooth, the front end of cooling fin is chip package region, and radiation tooth is separately fixed at the back side of chip package region；The rear end of cooling fin and the preceding end in contact of heat sink main body；Heat sink main body is internally provided with intake tunnel, exhalant canal and backwater channel；The reciprocation cycle cooling duct for the water stream channel composition cooling water that two water (flow) directions are opposite in intake tunnel, exhalant canal, backwater channel and cooling fin, for freezing simultaneously to the side of chip package region and heat sink main body.In the reciprocation cycle cooling duct of the laser reciprocation cycle cooling heat sink, the cooling water for being passed through heat sink front end is directly contacted with the radiation tooth of cooling fin and chip package region, contact area is big, good cooling results, can extend heat sink and chip of laser service life.
Description
Technical field
The utility model relates to a kind of laser thermal sediment more particularly to a kind of laser reciprocation cycle cooling heat sinks.
Background technique
High power semiconductor lasers are wide in the application of the fields such as solid state laser pumping, laser processing, laser medicine, beauty
It is general, however semiconductor laser is at work, heat energy loss can be converted by having about 30%~50% electric energy, and with power
Increase, the cooling requirements faced are harsher.
Chip of laser is usually encapsulated in heat sink surface by the encapsulation of semiconductor laser at present, using it is heat sink carry out it is scattered
Heat.Common heat sink have whole macro channel heat sink and micro-channel heat sink.Wherein, macro channel is heat sink because of good heat dissipation effect, production work
The advantages that skill is simple, at low cost, stability is good, application is more more extensive.
For example, disclosing a kind of semiconductor laser in the utility model patent that Authorization Notice No. is CN205016831U
The macro channel of device one chip is heat sink, including heat sink main body, and chip installation area is located at one end of heat sink main body, and water cooling area is located at close to core
The position of piece installing zone, water cooling area are equipped with the grid of perforation heat sink main body；Grid is by least two grate openings arranged in parallel
Composition, each grate opening includes two side walls being parallel to each other and the cohesive end for being connected two side walls.In use, heat sink
Grid in main body constitutes liquid refrigerating channel, when semiconductor laser works, by upper water flowing block, lower water flowing block to liquid system
The heat of laser chip generation is taken away in cold passage water flowing.In said structure, logical using more typical water cooling straight up and down
The set-up mode in road takes away the heat from the heat sink chip passed over by water-cooling channel.In above-mentioned heat sink structure, although
Water cooling area is positioned close to the position of chip installation area, but the cooling water because flowing through water cooling area is not straight with chip and chip installation area
Contact, it is to be improved to the cooling effect of chip.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of laser reciprocation cycle cooling heat sinks.
In order to achieve the above technical purposes, the utility model adopts the following technical solutions:
A kind of laser reciprocation cycle cooling heat sink, including heat sink main body and the heat dissipation that the heat sink main body front end is arranged in
Piece, wherein the cooling fin includes chip package region and multiple groups radiation tooth, and the front end of the cooling fin is chip package region, institute
State the back side that radiation tooth is separately fixed at the chip package region；The preceding termination of the rear end of the cooling fin and the heat sink main body
Touching；
The heat sink main body is internally provided with intake tunnel, exhalant canal and backwater channel；
Two opposite water stream channels of water (flow) direction are provided in the cooling fin；
Two water (flow) directions are opposite in the intake tunnel, the exhalant canal, the backwater channel and the cooling fin
Water stream channel composition cooling water reciprocation cycle cooling duct；The cooling water being passed through in the reciprocation cycle cooling duct is direct
It contacts with the radiation tooth of the cooling fin and chip package region, and freezes to the side of the heat sink main body.
Wherein more preferably, the shape of the backwater channel is " ∩ " shape, and the both ends of the backwater channel are respectively used to connect
The opposite water stream channel of two water (flow) directions in the cooling fin.
Wherein more preferably, two opposite water stream channels of water (flow) direction are respectively as follows: downward water stream channel and upward water
Circulation road；Wherein, the intake tunnel, the downward water stream channel, the backwater channel, the upward water stream channel with
And the exhalant canal, form the reciprocation cycle cooling duct.
Wherein more preferably, the front opening of the intake tunnel and the exhalant canal is separately positioned on the heat sink main body
Top, the lower part of the heat sink main body is arranged in the backwater channel.
Wherein more preferably, the downward water stream channel and the upward water stream channel are respectively by phase in the cooling fin
Between adjacent radiation tooth gap composition, the water return outlet and water outlet of the backwater channel respectively with the downward water stream channel and
Heat dissipation tooth contact in the upward water stream channel.
Wherein more preferably, in the cooling fin, the downward water stream channel and the upward water stream channel difference
It is set to the left-half and right half part of the cooling fin.
Wherein more preferably, the intake tunnel is used to be used for the shape of the opening of heat dissipation tooth contact, the exhalant canal
It is described in covering respectively with the shape of opening of heat dissipation tooth contact and the shape of the water return outlet of the backwater channel and water outlet
The rectangle of the overall width of downward water stream channel or the upward water stream channel.
Wherein more preferably, the intake tunnel, the exhalant canal are respectively arranged in straight inside the heat sink main body
Channel or curved channel.
Wherein more preferably, the import of the intake tunnel and the outlet of the exhalant canal, which pass through water pipe respectively and be connected to, follows
The water outlet of ring pump and water inlet end；The circulating pump is for being sent into cooling water into the reciprocation cycle cooling duct.
Wherein more preferably, the side of the heat sink main body is provided with semiconductor chilling plate, it is cold is passed through the reciprocation cycle
But the cooling water in channel simultaneously cools down the hot end of the semiconductor chilling plate.
Laser reciprocation cycle cooling heat sink provided by the utility model, by the way that the water inlet inside heat sink main body is arranged in
Channel, exhalant canal, the backwater channel water stream channel opposite with two water (flow) directions being arranged in cooling fin form cooling water
Reciprocation cycle cooling duct, can front end to heat sink main body and side comprehensively cooled down.Wherein, it is passed through heat sink front end
Cooling water directly contacted with the radiation tooth of cooling fin and chip package region, contact area is big, good cooling results, can extend heat
Heavy and chip of laser service life；The cooling water being passed through in reciprocation cycle cooling duct can also be simultaneously to setting heat sink
The semiconductor chilling plate of body side is cooled down, good cooling results.
Detailed description of the invention
Fig. 1 is the positive structure diagram of laser reciprocation cycle cooling heat sink provided by the utility model；
Fig. 2 is the overlooking structure diagram of laser reciprocation cycle cooling heat sink provided by the utility model；
Fig. 3 is the cooling principle schematic diagram of laser reciprocation cycle cooling heat sink provided by the utility model.
Specific embodiment
The technical solution of the utility model is further described in detail with specific embodiment with reference to the accompanying drawing.
In conjunction with Fig. 1 and Fig. 2 it is found that laser reciprocation cycle cooling heat sink provided by the utility model, including heat sink master
Body 1 and the cooling fin that 1 front end of heat sink main body is set.Wherein, cooling fin includes chip package region 2 and multiple groups radiation tooth 3, heat dissipation
Tooth 3 is separately fixed at the back side of chip of laser encapsulation region 2.The edge of cooling fin and the periphery of heat sink main body 1 are welded and fixed.It dissipates
The front end of backing is chip package region 2, is used for encapsulated laser chip.The rear end of cooling fin and the preceding end in contact of heat sink main body 1,
More preferably, the radiation tooth 3 positioned at cooling fin rear end is arranged in the cavity of 1 front end of heat sink main body, the rear end of radiation tooth 3 directly with
The front end face contact of heat sink main body 1.Heat sink main body 1 and cooling fin can be by materials such as red metal, red copper, brass, stainless steel, duralumin
Material is made.
Two water stream channels 6 and 8 are provided in cooling fin, water stream channel 6 is opposite with the water (flow) direction of water stream channel 8.
In cooling fin, water stream channel 6 and water stream channel 8 are respectively arranged at the left-half and right half part of cooling fin.Water stream channel 6
And water stream channel 8 is made of the gap between the adjacent heat radiation tooth 3 in left-half and right half part in cooling fin respectively.
First passage 5, second channel 9 and " ∩ " shape backwater channel 7 are internally provided in heat sink main body 1.5 He of first passage
Second channel 9 is provided with opening in the front end of heat sink main body 1 respectively, and the front opening of first passage 5 and second channel 9 is set respectively
It sets on the top of heat sink main body 1, wherein the front opening of first passage 5 is connected to the upper end of water stream channel 6, second channel 9
Front opening is connected to the upper end of water stream channel 8.The lower part of heat sink main body 1, " ∩ " shape return water is arranged in " ∩ " shape backwater channel 7
The water return outlet and water outlet in channel 7 respectively with the heat dissipation tooth contact in water stream channel 6 and water stream channel 8." ∩ " shape backwater channel 7
For connecting two opposite water stream channels of water (flow) direction 6 and 8, make to form complete water flow inside heat sink main body 1 and cooling fin
Channel.
First passage 5, second channel 9 are respectively straight channel or the curved channel being arranged in inside heat sink main body 1.First passage
5 and second channel 9 channel shape can be according to the setting position for the other structures being arranged in inside heat sink main body 1 depending on.Such as
Shown in Fig. 1, multiple installation parts for fixing are provided on the inside and/or side of heat sink main body 1, such as lifting lug 11 and setting
The setting position of screw hole 12 in the bottom of heat sink main body 1, first passage 5 and second channel 9 should get around the position of above-mentioned screw hole 12
It sets.
The cross section of first passage 5, second channel 9 and " ∩ " shape backwater channel 7 is not limited to the rectangle of diagram, can be with
It is the other shapes such as ellipse.More preferably, when first passage 5 is for be connected to water stream channel 6 opening of (i.e. with the tooth contact that radiates)
Shape, second channel 9 be used to be connected to water stream channel 8 (i.e. with radiate tooth contact) opening shape and " ∩ " shape return water
The water return outlet in channel 7 and the shape of water outlet are when covering the rectangle of the overall width of water stream channel 6 or 8, in each channel respectively
Water flow pressure and comparison of resistance equalization stable, are conducive to circulating for cooling water.
In Fig. 1 and laser reciprocation cycle cooling heat sink structure shown in Fig. 2, first passage 5, second channel 9, " ∩ "
The reciprocation cycle that the water stream channel 6 and 8 opposite with two water (flow) directions in cooling fin of shape backwater channel 7 forms cooling water together is cold
But channel.
In Fig. 3, to laser reciprocation cycle by taking first passage 5 is intake tunnel, second channel 9 is exhalant canal as an example
Water (flow) direction inside cooling heat sink is shown.At this point, the opposite water stream channel 6 and 8 of two water (flow) directions in cooling fin
Respectively downward water stream channel and upward water stream channel.Wherein, intake tunnel (i.e. first passage 5), in cooling fin downwards
Water stream channel (water stream channel 6), " ∩ " shape backwater channel 7, water stream channel (water stream channel 8) upward in cooling fin and go out
Aquaporin (i.e. second channel 9) forms the reciprocation cycle cooling duct of cooling water.When being passed through cooling from the import 4 of first passage 5
After water, in the front end of heat sink main body 1, be passed through cooling water in reciprocation cycle cooling duct directly with the radiation tooth of cooling fin 3 and
Chip package region 2 contacts, and contact area is big, good cooling results, can extend heat sink and chip of laser service life.Together
When, the cooling water being passed through in reciprocation cycle cooling duct can also freeze to the side of heat sink main body 1, good cooling results.
When being respectively arranged with semiconductor chilling plate (abbreviation TEC) in two sides of heat sink main body 1, it is passed through reciprocation cycle cooling duct
In cooling water simultaneously the hot end of semiconductor chilling plate can be cooled down.
The import 4 of intake tunnel (i.e. first passage 5) and the outlet 10 of exhalant canal (i.e. second channel 9) can be set respectively
It sets and removes any end face except front end in heat sink main body 1.It more preferably, can be by the import 4 of intake tunnel and exhalant canal
The same end face of heat sink main body 1 is arranged in outlet 10 simultaneously.In Fig. 1, by the import 4 of intake tunnel and the outlet of exhalant canal
10 are arranged in the rear end of heat sink main body 1 simultaneously.
In said structure, the import 4 of intake tunnel (i.e. first passage 5) and exhalant canal (i.e. second channel 9) go out
Mouth 10 is connected to water outlet and the water inlet end of circulating pump by water pipe respectively；Circulating pump into reciprocal circulating cooling channel for sending
Enter cooling water.Specifically, deionized water, medical pure water, alcohol, freezing liquid and other liquid with mobility can be used
Body is as the cooling water being sent into reciprocation cycle cooling duct.
It will be appreciated, of course, that water (flow) direction can be with Fig. 3 institute in above-mentioned laser reciprocation cycle cooling heat sink structure
The direction shown is completely opposite.First passage 5 can be used as to exhalant canal, second channel 9 is used as intake tunnel, exhalant canal
Outlet and the import of intake tunnel are connect with the water inlet end of circulating pump and water outlet respectively.At this point, two water flow sides in cooling fin
It is respectively upward water stream channel and downward water stream channel to opposite water stream channel 6 and 8.In intake tunnel, cooling fin to
Under water stream channel, " ∩ " shape backwater channel, water stream channel and exhalant canal upward in cooling fin, form the past of cooling water
Multiple circulating cooling channel.
In addition, the shape that the backwater channel of heat sink lower part is arranged in can also be not limited to " ∩ " shape, as long as backwater channel
Both ends can be connected respectively with two contrary channels in cooling fin.Such as the shape of backwater channel can also be
Semicircle or arc.Also, the shape of backwater channel can also be modified according to the mounting means of heat sink structure, such as: for
Multiple mounting holes that heat sink bottom is set and installation part are avoided, backwater channel can also be arranged to flow through the logical of Different Plane
Road, shape can be similar with the shape of intake tunnel and exhalant canal in Fig. 1.
In conclusion laser reciprocation cycle cooling heat sink provided by the utility model, by being arranged in heat sink main body
Intake tunnel, exhalant canal, the backwater channel of the inside water stream channel opposite with two water (flow) directions being arranged in cooling fin
Form the reciprocation cycle cooling duct of cooling water, can front end to heat sink main body and side comprehensively cooled down.Wherein, lead to
The cooling water for entering heat sink front end is directly contacted with the radiation tooth of cooling fin and chip package region, and contact area is big, good cooling results,
Heat sink and chip of laser service life can be extended；The cooling water being passed through in reciprocation cycle cooling duct can also be to setting
Semiconductor chilling plate in heat sink main body side is cooled down, good cooling results.
Laser reciprocation cycle cooling heat sink provided by the utility model is described in detail above.To ability
For the those skilled in the art in domain, it is done under the premise of without departing substantially from the utility model in essence spirit any apparent
Change, will all constitute the infringement weighed to the utility model patent, corresponding legal liabilities will be undertaken.
Claims (10)
1. a kind of laser reciprocation cycle cooling heat sink, it is characterised in that including heat sink main body and be arranged before the heat sink main body
The cooling fin at end, wherein the cooling fin includes chip package region and multiple groups radiation tooth, and the front end of the cooling fin is chip envelope
Area is filled, the radiation tooth is separately fixed at the back side of the chip package region；The rear end of the cooling fin and the heat sink main body
Preceding end in contact；
The heat sink main body is internally provided with intake tunnel, exhalant canal and backwater channel；
Two opposite water stream channels of water (flow) direction are provided in the cooling fin；
The opposite water of two water (flow) directions in the intake tunnel, the exhalant canal, the backwater channel and the cooling fin
The reciprocation cycle cooling duct of circulation road composition cooling water；It is passed through cooling water in the reciprocation cycle cooling duct directly and institute
Radiation tooth and the chip package region contact of cooling fin are stated, and is freezed to the side of the heat sink main body.
2. laser reciprocation cycle cooling heat sink as described in claim 1, it is characterised in that:
The shape of the backwater channel isShape, the both ends of the backwater channel are respectively used to connect two in the cooling fin
The opposite water stream channel of water (flow) direction.
3. laser reciprocation cycle cooling heat sink as described in claim 1, it is characterised in that:
Two opposite water stream channels of water (flow) direction are respectively as follows: downward water stream channel and upward water stream channel；Wherein, described
Intake tunnel, the downward water stream channel, the backwater channel, the upward water stream channel and the exhalant canal,
Form the reciprocation cycle cooling duct.
4. laser reciprocation cycle cooling heat sink as described in claim 1, it is characterised in that:
The front opening of the intake tunnel and the exhalant canal is separately positioned on the top of the heat sink main body, the return water
The lower part of the heat sink main body is arranged in channel.
5. laser reciprocation cycle cooling heat sink as claimed in claim 3, it is characterised in that:
The downward water stream channel and the upward water stream channel are respectively by the gap in radiator between adjacent heat radiation tooth
Composition, the water return outlet and water outlet of the backwater channel respectively with the downward water stream channel and the upward water stream channel
In heat dissipation tooth contact.
6. laser reciprocation cycle cooling heat sink as claimed in claim 5, it is characterised in that:
In the cooling fin, the downward water stream channel and the upward water stream channel are respectively arranged at the cooling fin
Left-half and right half part.
7. laser reciprocation cycle cooling heat sink as claimed in claim 5, it is characterised in that:
The intake tunnel is used to being used for the shape of opening of heat dissipation tooth contact, the exhalant canal to open with heat dissipation tooth contact
Mouthful shape and the backwater channel water return outlet and water outlet shape, be respectively the covering downward water stream channel or
Cover the rectangle of the overall width of the upward water stream channel.
8. laser reciprocation cycle cooling heat sink as described in claim 1, it is characterised in that:
The intake tunnel, the exhalant canal are respectively straight channel or the curved channel being arranged in inside the heat sink main body.
9. laser reciprocation cycle cooling heat sink as described in claim 1, it is characterised in that:
The outlet of the import of the intake tunnel and the exhalant canal be connected to respectively by water pipe the water outlet of circulating pump with
Water inlet end；The circulating pump is for being sent into cooling water into the reciprocation cycle cooling duct.
10. laser reciprocation cycle cooling heat sink as described in claim 1, it is characterised in that:
The side of the heat sink main body is provided with semiconductor chilling plate, the cooling water being passed through in the reciprocation cycle cooling duct
The hot end of the semiconductor chilling plate is cooled down simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821737078.1U CN209133833U (en) | 2018-10-25 | 2018-10-25 | Laser reciprocation cycle cooling heat sink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821737078.1U CN209133833U (en) | 2018-10-25 | 2018-10-25 | Laser reciprocation cycle cooling heat sink |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209133833U true CN209133833U (en) | 2019-07-19 |
Family
ID=67232605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821737078.1U Active CN209133833U (en) | 2018-10-25 | 2018-10-25 | Laser reciprocation cycle cooling heat sink |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209133833U (en) |
-
2018
- 2018-10-25 CN CN201821737078.1U patent/CN209133833U/en active Active
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