CN113394182A - Water-cooling radiator with good heat absorption performance - Google Patents
Water-cooling radiator with good heat absorption performance Download PDFInfo
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- CN113394182A CN113394182A CN202010175745.7A CN202010175745A CN113394182A CN 113394182 A CN113394182 A CN 113394182A CN 202010175745 A CN202010175745 A CN 202010175745A CN 113394182 A CN113394182 A CN 113394182A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
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- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention discloses a water-cooled radiator with good heat absorption performance, which comprises a radiator body, a water inlet pipe and a water outlet pipe and is characterized in that a cooling water channel communicated with the water inlet pipe and the water outlet pipe is arranged in the radiator body, and cooling water flows through the water inlet pipe, the cooling water channel and the water outlet pipe in sequence; the radiator body is provided with a bypass layer on a plane parallel to the cooling water channel, the bypass layer is provided with a water inlet and a water outlet, the water inlet of the bypass layer is communicated with a water inlet pipe, the water outlet of the bypass layer is connected into the cooling water channel, and the water outlet is provided with a one-way valve. The invention has the advantages that the cooling water is fully utilized to absorb heat, the IGBT module is suitable for being applied, and the heat flow resistance at the rear end of the cooling water channel is reduced, so that the cooling balance of the IGBT module is ensured, and the heat dissipation efficiency is improved.
Description
Technical Field
The invention relates to the technical field of water-cooling heat dissipation, in particular to a water-cooling heat radiator with good heat absorption performance.
Background
The water-cooled radiator is widely applied to the IGBT module, and a boundary layer of laminar flow is generally damaged or thinned by arranging a flow disturbing piece in a cooling water channel, so that heat exchange in a water body is promoted to improve the radiating efficiency; in addition, there is a method of increasing the heat radiation efficiency of the water-cooled radiator by extending the cooling water passage, increasing the flow rate of the cooling water, or the like. However, as the IGBT module is continuously upgraded with the standards of electric vehicles, the required heat dissipation performance is also higher and higher, and the existing water-cooled heat sink still needs to be continuously improved, which has great disadvantages.
For example, in chinese patent document, the patent of invention entitled "a turbulent water-cooled heat sink" with application number CN201610907030X and published as 2017, 2.22.a discloses a turbulent water-cooled heat sink, which belongs to the field of water-cooled heat sinks; including radiator body (1), water inlet (3) and delivery port (4) of aluminium system, characterized by: the internal water channel is embedded in a groove, the shape of which is the same as that of the copper pipe (2), on the surface of the heat radiation body (1) through the copper pipe (2), and a spiral groove (21) is formed in the inner surface of the copper pipe (2); by replacing the conventional copper round tube with a copper tube (2) with a spiral groove (21). The disadvantages are that: according to thermodynamics and hydrodynamics, in the later stage that cooling water temperature risees, the thermal resistance can quick grow, and the heat absorption ability that is also can reduce fast, is influenced by the thermal resistance, and the cooling capacity of cooling water course back end descends by a wide margin, and the holistic heat-sinking capability of radiator is unreliable.
In addition, in the prior art, a cooling water channel parallel connection mode is adopted for cooling, but the cooling path is short, the cooling water is not used sufficiently, more energy is consumed for cooling the cooling water at an electric vehicle module, and obviously, the mode is not favorable for the cruising of the electric vehicle.
Disclosure of Invention
Based on the above-mentioned not enough among the prior art, this application provides a water-cooling radiator that heat absorption performance is good, and make full use of cooling water absorbs the heat, is fit for the IGBT module and uses, reduces the hot flow resistance of cooling water course rear end to guarantee the cooling equilibrium of IGBT module, improve the radiating efficiency.
In order to achieve the above object, the present invention adopts the following technical solutions.
A water-cooled radiator with good heat absorption performance comprises a radiator body, a water inlet pipe and a water outlet pipe, and is characterized in that a cooling water channel communicated with the water inlet pipe and the water outlet pipe is arranged in the radiator body, and cooling water sequentially flows through the water inlet pipe, the cooling water channel and the water outlet pipe; the radiator body is provided with a bypass layer on a plane parallel to the cooling water channel, the bypass layer is provided with a water inlet and a water outlet, the water inlet of the bypass layer is communicated with a water inlet pipe, the water outlet of the bypass layer is connected into the cooling water channel, and the water outlet is provided with a one-way valve.
The one-way valve ensures the one-way flow of the cooling water in the bypass layer, and prevents the water in the cooling pipeline from flowing back to the bypass layer; compared with the cooling water in the cooling water channel, the heat transfer speed of the cooling water in the bypass layer is far higher than that of the cooling water in the cooling water channel, so that the temperature difference between the cooling water in the bypass layer is small, and the heat absorption efficiency of each part of the cooling water channel below the bypass layer can be balanced through the cooling water in the bypass layer; after partial heat is absorbed by cooling water in the bypass layer, the cooling water channel can keep larger temperature difference compared with the module to be cooled, so that the cooling water in the cooling water channel can absorb heat from the module to be cooled, the heat absorption effect is good, and the cooling efficiency is improved.
Preferably, the bypass layer is located above the cooling water passage passing through the front section of the drain port. The distance of cooling water course and IGBT is more close, can preferentially absorb IGBT's heat, and the supplementary heat that absorbs in the cooling water course of bypass layer to reduce the temperature of cooling water course, the difference in temperature of cooling water course and IGBT obtains keeping, thereby can improve the heat absorption ability of cooling water course and the heat absorption equilibrium of cooling water course front and back section.
Preferably, the cross-sectional area of the cooling water passage behind the drain opening is larger than the cross-sectional area of the cooling water passage in front of the drain opening in the direction from the inlet pipe to the outlet pipe. When the cross-sectional area of the cooling water channel behind the water outlet is enlarged, the increase of the heat flow resistance of the cooling water inside the water outlet is slowed down compared with that of the cooling water at the front section, so that the rising rate of the heat flow resistance of the cooling water channel at the rear section can be stabilized, and the heat absorption capacity of the cooling water at the rear section is ensured.
Preferably, the water outlet is positioned at the trisection point of the cooling water channel close to the water outlet pipe. The heat flow resistance of the rear section of the cooling water channel is reduced, and the heat absorption capacity of the rear section of the cooling water channel is guaranteed, so that the cooling efficiency of the front end and the rear end of the cooling water channel is balanced, the IGBT modules are guaranteed to be cooled evenly, and the heat dissipation efficiency of the radiator is improved.
Preferably, the bypass layer is made of copper embedded in the radiator body, and the bypass layer and the cooling water channel are adhered and fixed through heat-conducting glue. The heat conduction performance of copper is good, and the cooling water body in the bypass layer can play the effect of assisting the corresponding cooling water course in below to absorb heat, and the heat absorption effect of bypass layer is better.
Preferably, the inner surface of the cooling water channel is provided with a plurality of sections of spiral tooth ribs. The heat exchange area in the cooling water channel is increased, and the heat absorption capacity of the cooling water is improved.
Preferably, the spiral tooth rib comprises a base connected with the cooling water channel, the cross section of the base is in an isosceles trapezoid shape, the upper end of the side surface of the base, facing away from the water inflow, is provided with a notch groove, the notch groove and the base are in smooth transition, and the base and the cooling water channel are in smooth transition. The cooling water can continue to flow to adjacent base after flowing through the base, because the cooling water has kinetic energy, can take in the vacuum of the one-time formation negative pressure that the base back flowed into to the water, and can further enlarge the effect that the vacuum was taken through the breach groove to form spontaneous vortex at the base back, improve the heat exchange capacity of cooling water in the cooling water course, improve the radiating efficiency of radiator.
Preferably, the radiator body is in a cuboid shape, the water inlet pipe and the water outlet pipe are located on a diagonal line of the radiator body, and the cooling water channel is arranged in the radiator body in a reciprocating S shape. The setting and the forming are convenient; the cooling water can pass through all positions of the radiator body through the cooling water channel, and the heat dissipation performance is good.
Preferably, the radiator body is in a cuboid shape, the water inlet pipe and the water outlet pipe are located on the same side face of the radiator body, and the cooling water channel is arranged in the radiator body in a reciprocating S shape. The temperature buffering effect and the fluid convection effect of cooling water in the bypass pipe on the rear section of the cooling water channel are enhanced, so that the balance of the cooling capacity of the front section and the rear section of the cooling water channel can be further enhanced.
The invention has the advantages that: the cooling water is fully used, the IGBT module is suitable for application, the waste of heat is reduced, the energy loss is reduced, and the improvement of the endurance of the electric automobile is facilitated; the heat flow resistance at the rear end of the cooling water channel is reduced, so that the cooling balance of the IGBT module is ensured, and the heat dissipation efficiency is improved; spontaneous vortex is formed on the back of the base through the spiral tooth ribs, the heat exchange capacity of cooling water in the cooling water channel is improved, and the heat dissipation efficiency of the radiator is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a sectional view taken in the direction of a-a in fig. 1.
Fig. 3 is a sectional view taken in the direction B-B in fig. 1.
FIG. 4 is a radial cross-sectional view of a cooling gallery of the present invention.
Fig. 5 is an enlarged view at C in fig. 4.
Fig. 6 is a schematic structural diagram of another embodiment of the present invention.
In the figure: the inlet pipe 2 of the radiator body 1, the outlet pipe 3 of the cooling water passage 4, the bypass layer 5, the inlet 51 of the water outlet 52, the check valve 53, the spiral tooth rib 6, the base 61 and the notch groove 62.
Detailed Description
The invention is further described below with reference to the figures and specific embodiments.
Example 1:
in fig. 1 to 5, a water-cooled heat sink with good heat absorption performance includes a heat sink body 1, a water inlet pipe 2 and a water outlet pipe 3, and is characterized in that a cooling water channel 4 communicating the water inlet pipe 2 and the water outlet pipe 3 is arranged in the heat sink body 1, and cooling water flows through the water inlet pipe 2, the cooling water channel 4 and the water outlet pipe 3 in sequence; the radiator body 1 is cuboid, the water inlet pipe 2 and the water outlet pipe 3 are located on the diagonal line of the radiator body 1, and the cooling water channel 4 is arranged in the radiator body 1 in a reciprocating S shape. The radiator body 1 is provided with a bypass layer 5 on a plane parallel to the cooling water channel 4, the bypass layer 5 is made of copper and embedded in the radiator body 1, and the bypass layer 5 and the cooling water channel 4 are fixedly bonded through heat conducting glue. The bypass layer 5 is provided with a cavity for cooling water to flow through, the bypass layer 5 is provided with a water inlet 51 and a water outlet 52, and the water inlet 51 and the water outlet 52 are respectively positioned at two ends of the bypass layer 5. The water inlet 51 of the bypass layer 5 is communicated with the water inlet pipe 2, the water outlet 52 of the bypass layer 5 is connected to the cooling water passage 4, and the water outlet 52 is provided with a check valve 53. The axis of the water inlet 51 is parallel to the axis of the water inlet pipe 2; the axis of the water outlet is vertical to the plane of the bypass layer 5; the bypass layer 5 is located above the cooling water passage 4 passing through the front section of the water discharge port 52. The cross-sectional area of the cooling water passage 4 behind the drain opening 52 is larger than the cross-sectional area of the cooling water passage 4 in front of the drain opening 52 in the direction of the cooling water passage 4 along the inlet pipe 2 to the outlet pipe 3. The water outlet 52 is positioned at the trisection point of the cooling water channel 4 close to the water outlet pipe 3. The inner surface of the cooling water channel 4 is provided with a plurality of sections of spiral gear ribs 6. As shown in fig. 1, the cooling water channel 4 includes a plurality of straight pipes and elbows for connecting adjacent straight pipes, the spiral tooth ribs 6 are respectively arranged on each straight pipe, the cooling water channel 4 adopts an assembly welding mode, a pipeline provided with the spiral tooth ribs 6 is formed independently, and then the pipeline is welded with other smooth straight pipe parts into a whole. The spiral tooth rib 6 comprises a base 61 connected with the cooling water channel 4, the cross section of the base 61 is in an isosceles trapezoid shape, the upper end of the side surface of the base 61, which is back to the inflow of the water body, is provided with a notch groove 62, the notch groove 62 and the base 61 are in smooth transition, and the base 61 and the cooling water channel 4 are in smooth transition. The cooling water can continue to flow to adjacent base 61 after flowing through base 61, because the cooling water has kinetic energy, can be in the vacuum area of a formation negative pressure that base 61 is back to the inflow of water, and can further enlarge the effect in vacuum area through breach groove 62, form spontaneous vortex at the base 61 back, improve the heat exchange capacity of cooling water in cooling water course 4, improve the radiating efficiency of radiator.
Example 2:
as shown in fig. 6, a water-cooled radiator with good heat absorption performance is different from embodiment 1 in that a water inlet pipe 2 and a water outlet pipe 3 are located on the same side surface of a radiator body 1.
The one-way valve 53 ensures the one-way flow of the cooling water in the bypass layer 5, and prevents the water in the cooling pipeline from flowing back to the bypass layer 5; compared with the cooling water in the cooling water channel 4, the heat transfer speed of the cooling water in the bypass layer 5 is far higher, so that the temperature difference between the cooling water in the bypass layer 5 is small, and the heat absorption efficiency of each part of the cooling water channel 4 below the bypass layer 5 can be balanced through the cooling water in the bypass layer 5; after partial heat is absorbed by cooling water in the bypass layer 5, the temperature difference of the cooling water channel 4 is larger than that of the module to be cooled, so that the cooling water in the cooling water channel 4 can absorb heat from the module to be cooled, the heat absorption effect is good, and the cooling efficiency is improved.
Claims (9)
1. A water-cooled radiator with good heat absorption performance comprises a radiator body, a water inlet pipe and a water outlet pipe, and is characterized in that a cooling water channel communicated with the water inlet pipe and the water outlet pipe is arranged in the radiator body, and cooling water sequentially flows through the water inlet pipe, the cooling water channel and the water outlet pipe; the radiator body is provided with a bypass layer on a plane parallel to the cooling water channel, the bypass layer is provided with a water inlet and a water outlet, the water inlet of the bypass layer is communicated with a water inlet pipe, the water outlet of the bypass layer is connected into the cooling water channel, and the water outlet is provided with a one-way valve.
2. The water-cooled heat sink as recited in claim 1, wherein the bypass layer is located above the cooling water passage passing through the front section of the drain opening.
3. The water-cooled radiator with good heat absorption performance as claimed in claim 1 or 2, wherein the cross-sectional area of the cooling water channel behind the water outlet is larger than that of the cooling water channel in front of the water outlet in the direction from the water inlet pipe to the water outlet pipe.
4. The water-cooled radiator with good heat absorption performance as claimed in claim 1 or 2, wherein the water discharge port is positioned at a trisection point of the cooling water channel close to the water outlet pipe.
5. The water-cooled heat sink as claimed in claim 1 or 2, wherein the bypass layer is made of copper embedded in the heat sink body, and the bypass layer and the cooling water channel are bonded and fixed by a heat conducting glue.
6. The water-cooled heat sink as recited in claim 1, wherein the inner surface of said cooling water channel is provided with a plurality of spiral ribs.
7. The water-cooled heat sink as claimed in claim 6, wherein the spiral rib comprises a base connected to the cooling water channel, the base has an isosceles trapezoid cross section, the upper end of the base opposite to the side surface into which the water flows is provided with a notch, the notch and the base smoothly transition, and the base and the cooling water channel smoothly transition.
8. The water-cooled radiator with good heat absorption performance as claimed in claim 1, 2 or 6, wherein the radiator body is shaped like a cuboid, the water inlet pipe and the water outlet pipe are positioned on the diagonal line of the radiator body, and the cooling water channel is arranged in a reciprocating S shape in the radiator body.
9. The water-cooled radiator with good heat absorption performance as claimed in claim 1, 2 or 6, wherein the radiator body is in a rectangular parallelepiped shape, the water inlet pipe and the water outlet pipe are positioned on the same side surface of the radiator body, and the cooling water channel is arranged in a reciprocating S shape in the radiator body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010175745.7A CN113394182A (en) | 2020-03-13 | 2020-03-13 | Water-cooling radiator with good heat absorption performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010175745.7A CN113394182A (en) | 2020-03-13 | 2020-03-13 | Water-cooling radiator with good heat absorption performance |
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| Publication Number | Publication Date |
|---|---|
| CN113394182A true CN113394182A (en) | 2021-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010175745.7A Pending CN113394182A (en) | 2020-03-13 | 2020-03-13 | Water-cooling radiator with good heat absorption performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116544118A (en) * | 2023-06-05 | 2023-08-04 | 赛晶亚太半导体科技(北京)有限公司 | IGBT module parallel water-cooling radiator and preparation method thereof |
-
2020
- 2020-03-13 CN CN202010175745.7A patent/CN113394182A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116544118A (en) * | 2023-06-05 | 2023-08-04 | 赛晶亚太半导体科技(北京)有限公司 | IGBT module parallel water-cooling radiator and preparation method thereof |
| CN116544118B (en) * | 2023-06-05 | 2024-03-29 | 赛晶亚太半导体科技(北京)有限公司 | IGBT module parallel water-cooling radiator and preparation method thereof |
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Application publication date: 20210914 |