CN213485457U - Two-phase immersed liquid cooling case based on thermoelectric refrigeration - Google Patents
Two-phase immersed liquid cooling case based on thermoelectric refrigeration Download PDFInfo
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- CN213485457U CN213485457U CN202022254796.7U CN202022254796U CN213485457U CN 213485457 U CN213485457 U CN 213485457U CN 202022254796 U CN202022254796 U CN 202022254796U CN 213485457 U CN213485457 U CN 213485457U
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- 238000003491 array Methods 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 4
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model belongs to the technical field of electronic components heat dissipation, a double-phase submergence formula liquid cooling machine case based on thermoelectric cooling is provided. The heat generated by the battery in the working process is taken away by utilizing the vaporization of the fluorinated liquid on the surfaces of electronic components such as a CPU (Central processing Unit) and the like, and is finally transferred to the external environment through a thermoelectric refrigeration system, so that the electronic components such as the CPU and the like are in a proper working temperature range. Compared with the traditional cooling mode, the cooling device has the following advantages: the phase change of the fluorinated liquid is fully utilized to absorb the heat generated by the working of the battery, and the battery has no contact thermal resistance, strong heat taking capability and high heat dissipation efficiency; the filled glass beads occupy most of the gap space, so that the consumption of the fluorinated liquid is reduced to the minimum, and the cooling cost is greatly reduced; the thermoelectric refrigerating sheet is adopted to condense the fluorinated liquid vapor, the condensing temperature is easy to control, and no refrigerant pollution is caused.
Description
Technical Field
The utility model belongs to the technical field of electronic components heat dissipation, concretely relates to double-phase submergence formula liquid cooling machine case based on thermoelectric cooling.
Background
With followingWith the continuous progress and development of microelectronic technology, electronic chips are gradually miniaturized, and the integration level is higher and higher. The high integration level makes the chip power consumption larger and larger, and the heat flux density of the surface of some electronic devices exceeds 1 x 10 according to statistics6W/m2(ii) a Research shows that if the working temperature of the electronic device is increased by 10 ℃, the reliability of the electronic device is reduced by half; the higher the temperature, the more susceptible the electronic device is to failure, and if the chip temperature increases by 10 ℃ from 75 ℃, the failure rate will also double. For silicon core components, if the temperature exceeds 170 ℃, the device will also fail completely. In most cases, the junction temperature of the electronic device must not exceed 85 ℃ at the highest. This presents a serious challenge to the conventional passive heat dissipation techniques such as air cooling and liquid cooling.
Today, some microprocessor chips contain over 10 hundred million transistors. Such a large number of transistors integrated together will produce a significant amount of heat flow. Therefore, the heat dissipation problem of the computer CPU has become the focus of the computer industry and the market at present, and we know that the temperature of the computer CPU needs to be within the design range to ensure the stable operation of the computer, and if the working temperature of the CPU exceeds the critical temperature, the computer will be halted and the like. At present, the mainstream heat dissipation mode of a desktop CPU is fan-added aluminum fin heat dissipation, but the heat dissipation mode gradually fails to meet the heat dissipation requirement of the CPU.
In view of the not enough of above-mentioned traditional cooling method existence, the utility model provides a double-phase submergence formula liquid cooling machine case based on thermoelectric cooling. The heat generated by the battery in the working process is taken away by utilizing the vaporization of the fluorinated liquid on the surface of the electronic component, and is finally transferred to the external environment through the thermoelectric refrigeration system, so that the electronic component is always in the proper working temperature range, and the stable operation of a computer is ensured.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem lie in providing a double-phase submergence formula liquid cooling machine case based on thermoelectric refrigeration, utilize the vaporization of fluoridizing liquid on electronic components surface to take away the produced heat of battery in the course of the work, finally give external environment with this heat transfer through thermoelectric refrigeration system for electronic components is in suitable operating temperature within range, has guaranteed the steady operation of computer.
The technical scheme of the utility model:
a two-phase submerged liquid cooled enclosure based on thermoelectric refrigeration, the two-phase submerged liquid cooled enclosure based on thermoelectric refrigeration comprising: the device comprises a main box body 1, a liquid cooling box 2, an electronic component 3, a fluorinated liquid 4, a lead pipe 5, glass beads 6, a lower fin 7, a thermoelectric refrigerating sheet 8, an upper fin 9 and a fan 10; the liquid cooling box 2, the electronic component 3, the fluorinated liquid 4, the lead pipe 5, the glass beads 6, the lower fins 7, the thermoelectric refrigerating sheet 8, the upper fins 9 and the fan 10 are all positioned in the main box body. Wherein, the liquid cooling box is filled with fluorinated liquid 4, and a mainboard provided with electronic components 3 is arranged at the bottom of the liquid cooling box 2; the glass beads 6 are filled in the gap between the electronic component 3 and the liquid cooling tank 2; the lead tube 5 is arranged on the side surface of the liquid cooling box 2; the lower fin 7 is arranged at the upper part of the liquid cooling box 2, and the sealing between the lower fin and the liquid cooling box 2 is realized in a manner of pressing a gasket; the thermoelectric refrigerating sheet 8 is positioned between the lower fin 7 and the upper fin 9 and is in close contact with the lower fin and the upper fin through a heat-conducting interface material; the fan 10 is mounted on the upper end of the upper fin 9.
When the electronic components start to work, the temperature gradually rises, the heat generated by the electronic components is taken away by the filled fluorinated liquid 4, and when the fluorinated liquid 4 does not reach the boiling point, the fluorinated liquid 4 absorbs the heat generated by the electronic components by utilizing sensible heat; when the surface temperature of the electronic component rises to be higher than the boiling point of the fluorinated liquid 4, the fluorinated liquid 4 starts to boil, vapor of the fluorinated liquid 4 generated by boiling is condensed on the surface of the lower fin 7, heat released by condensation is transmitted to the upper fin 9 through the thermoelectric refrigerating sheet 8, and finally, the heat is transmitted to the external environment under the action of the fan 10.
The liquid cooling box 2 is located inside the main box body 1, the volume of the liquid cooling box is smaller than that of the main box body 1, and only the mainboard and the electronic component 3 on the mainboard are used as components carried inside the liquid cooling box.
The electronic component 3 is partially or completely immersed in the fluorinated liquid 4.
The fluorinated liquid 4 is an insulating flame-retardant liquid and has a boiling point of 0-80 ℃ at 1 standard atmospheric pressure.
The lead pipe 5 is arranged on the side surface of the liquid cooling box 2, a pipe orifice at one end of the lead pipe is positioned below the liquid level of the fluorinated liquid 4 in the liquid cooling box 2, and a pipe orifice at one end of the lead pipe is positioned outside the liquid cooling box 2 and used for leading the wiring harness on the mainboard to the outside of the liquid cooling box 2.
The diameter of the glass beads 6 is small and is millimeter-scale, and the filling height of the glass beads is equal to or lower than the height of the liquid level of the fluorinated liquid 4.
The surface of the lower fin 7 is provided with a super-hydrophobic coating, and the super-hydrophobic coating is a Teflon coating with a contact angle larger than 150 degrees.
The thermoelectric refrigerating plate 8 is formed by a plurality of standard thermoelectric refrigerating plates (40 x 40mm) in an array. And interface materials with good thermal conductivity are filled in the contact surfaces among the lower fins 7, the thermoelectric refrigerating sheets 8 and the upper fins 9, so that the contact thermal resistance is reduced.
The fan 10 is mounted on the upper part of the upper fin 9 and used for performing forced convection air cooling heat dissipation on the upper fin 9.
The utility model discloses a beneficial achievement:
1) the phase change of the fluorinated liquid is fully utilized to absorb the heat generated by the working of the battery, and the battery has no contact thermal resistance, strong heat taking capability and high heat dissipation efficiency;
2) the filled glass beads occupy most of the gap space, so that the consumption of the fluorinated liquid is reduced to the minimum, and the cooling cost is greatly reduced;
3) the pipe orifice of the lead pipe is positioned below the liquid level, so that the wiring harness on the main board can be simply led out from the liquid cooling box without damaging the tightness of a gas phase area above the liquid cooling box;
4) the thermoelectric refrigerating sheet is adopted to condense the fluorinated liquid vapor, the condensing temperature is easy to control, and no refrigerant pollution is caused.
Drawings
Fig. 1 is a schematic diagram of a two-phase submerged liquid-cooled enclosure based on thermoelectric cooling.
In the figure: 1, a main box body; 2, a liquid cooling box; 3, electronic components; 4, a fluoridizing solution; 5, a lead tube; 6 glass beads; 7 lower fins; 8 thermoelectric refrigerating chips; 9, an upper fin; 10 fan.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. It is to be understood that such descriptions are merely illustrative of the features and advantages of the present invention and are not intended to limit the scope of the present invention as claimed.
The utility model discloses a double-phase submergence formula liquid cooling machine case based on thermoelectric cooling, include: the device comprises a main box body 1, a liquid cooling box 2, an electronic component 3, a fluorinated liquid 4, a lead pipe 5, glass beads 6, a lower fin 7, a thermoelectric refrigerating sheet 8, an upper fin 9 and a fan 10; the liquid cooling box 2, the electronic component 3, the fluorinated liquid 4, the lead pipe 5, the glass beads 6, the lower fins 7, the thermoelectric refrigerating sheet 8, the upper fins 9 and the fan 10 are all located inside the main box body 1. Wherein, the liquid cooling box 2 is filled with fluorinated liquid 4, and the mainboard provided with the electronic component 3 is arranged at the bottom of the liquid cooling box 2; the glass beads 6 are filled in the gap between the electronic component 3 and the liquid cooling tank 2; the lead tube 5 is arranged on the side surface of the liquid cooling box 2; the lower fin 7 is arranged at the upper part of the liquid cooling box 2, and the sealing between the lower fin and the liquid cooling box 2 is realized in a manner of pressing a gasket; the thermoelectric refrigerating sheet 8 is positioned between the lower fin 7 and the upper fin 9 and is in close contact with the lower fin and the upper fin through a heat-conducting interface material; the fan 10 is arranged at the upper end of the upper fin 7; when the electronic components start to work, the temperature gradually rises, the heat generated by the electronic components is taken away by the filled fluorinated liquid 4, and when the fluorinated liquid 4 does not reach the boiling point, the fluorinated liquid 4 absorbs the heat generated by the electronic components by utilizing sensible heat; when the surface temperature of the electronic component rises to be higher than the boiling point of the fluorinated liquid 4, the fluorinated liquid 4 starts to boil, vapor of the fluorinated liquid 4 generated by boiling is condensed on the surface of the lower fin 7, heat released by condensation is transmitted to the upper fin 9 through the thermoelectric refrigerating sheet 8, and finally, the heat is transmitted to the external environment under the action of the fan 10.
As shown in fig. 1, which is a schematic diagram of a two-phase submerged liquid cooling cabinet based on thermoelectric cooling, it can be seen that the liquid cooling cabinet 2 is located inside the main cabinet 1, and the volume of the liquid cooling cabinet is smaller than that of the main cabinet 1. In this example, the liquid cooling tank 2 is made of acrylic material, and the liquid cooling tank 2 is formed by bonding acrylic plates with the same thickness. The components and parts that the inside of liquid cooling case 2 bore only mainboard and the electronic components and parts 3 on the mainboard, electronic components such as power and optical drive all are located the outside of liquid cooling case 2.
It can be seen from the figure that the electronic component 3 is totally immersed in the fluorinated liquid 4, the fluorinated liquid 4 is an insulating flame retardant liquid and has a boiling point of 0-80 ℃ under 1 atmosphere, and in this example, the fluorinated liquid HFE-7100 manufactured by 3M company has a boiling point of 61 ℃, and has good dielectric properties and excellent flame retardancy.
The diameter of the glass beads 6 is small, and is in the order of millimeters, and in the present example, the diameter of the glass beads 6 is 3 millimeters. The glass beads 6 are filled in the gap space between the electronic component 3 and the liquid cooling tank 2, and the filling height of the glass beads is equal to or lower than the liquid level of the fluorinated liquid 4. In this example, the filling height of the glass beads 6 is equal to the height of the liquid level of the fluorinated liquid 4, so that the usage amount of the fluorinated liquid 4 is greatly reduced, and the cost of the case is reduced.
As shown in the figure, the lower fin 7 is arranged at the upper part of the liquid cooling box 2, and the lower fin 7 and the liquid cooling box 2 are sealed in a gasket pressing mode. The surface of the lower fin 7 is provided with the super-hydrophobic coating, in this example, the super-hydrophobic coating is formed by coating a teflon coating on the surface, and after the surface is dried, a contact angle is measured to be larger than 150 degrees, so that the condensation mode of the vapor of the fluorinated liquid 4 on the surface is bead-shaped condensation, and the condensation heat exchange rate is greatly improved.
The thermoelectric refrigerating plate 8 is formed by a plurality of standard thermoelectric refrigerating plates (40 x 40mm) in an array. The thermoelectric refrigeration piece 8 is located between the upper fin 9 and the lower fin 7, and the contact surface between the thermoelectric refrigeration piece 8 and the upper and lower fins is filled with an interface material with good thermal conductivity for reducing the contact thermal resistance.
The fan 10 is mounted on the upper part of the upper fin 9 and used for performing forced convection air cooling heat dissipation on the upper fin 9. In this example, the air inlet of the fan 10 is distributed on the side of the main box 1, and the air outlet of the fan 10 is located at the top end of the main box 1.
As shown in fig. 1, when the electronic component starts to operate, the temperature gradually rises, the heat generated by the electronic component is taken away by the filled fluorinated liquid 4, and when the fluorinated liquid 4 does not reach the boiling point, the fluorinated liquid 4 absorbs the heat generated by the electronic component by sensible heat. When the surface temperature of the electronic component rises to a temperature higher than the boiling point of the fluorination liquid 4, the fluorination liquid 4 starts to boil. Because the lower fin 7 is contacted with the cold end of the thermoelectric refrigerating sheet 8, the temperature is lower, therefore, the fluorinated liquid 4 steam generated by boiling is condensed on the surface of the lower fin 7, the heat released by condensation is transferred to the hot end through the cold end of the thermoelectric refrigerating sheet 8, then the heat is transferred to the upper fin 9 contacted with the hot end of the thermoelectric refrigerating sheet 8, and finally, under the action of the fan 10, the heat is transferred to the external environment in a forced convection heat transfer mode.
It can be seen from the figure, in order to save the amount of the fluorinated liquid 4, the utility model discloses only arrange the higher electronic components 3 of heat production in the liquid cooling box 2, other some less electronic components of heat production such as power all are located outside the liquid cooling box 2. The pencil on the mainboard leads outside liquid cooling case 2 through lead tube 5, links to each other with input/output socket and CD-ROM, has also realized the normal connection and the use of outside plug-in components when realizing local submergence formula liquid cooling.
To sum up, the utility model provides a double-phase submergence formula liquid cooling machine case based on thermoelectric refrigeration. The heat generated by the battery in the working process is taken away by utilizing the vaporization of the fluorinated liquid on the surface of the electronic component, and is finally transferred to the external environment through the thermoelectric refrigeration system, so that the electronic component is in a proper working temperature range.
The technical solutions and advantages of the present disclosure have been described in detail with reference to the specific examples, and it should be understood that the above description is only exemplary of the present disclosure, and is not intended to limit the present disclosure. The sizes and shapes of the various elements in the drawings are not to be considered as reflecting actual sizes and proportions, but are merely representative of the contents of the present example. Any modification, improvement or equivalent replacement made on the principle and spirit of the present disclosure is within the protection scope of the present disclosure.
Claims (10)
1. A two-phase immersed liquid cooling case based on thermoelectric refrigeration is characterized by comprising a main case body (1), a liquid cooling case (2) arranged in the main case body (1), an electronic component (3), a fluorinated liquid (4), a lead pipe (5), glass beads (6), lower fins (7), thermoelectric refrigeration sheets (8), upper fins (9) and a fan (10); wherein, the liquid cooling box (2) is filled with fluorinated liquid (4), and a mainboard for installing electronic components (3) is arranged at the bottom of the liquid cooling box (2); the glass beads (6) are filled in the gap between the electronic component (3) and the liquid cooling box (2); the lead tube (5) is arranged on the side surface of the liquid cooling box (2); the lower fin (7) is arranged at the upper part of the liquid cooling box (2) and is sealed with the liquid cooling box (2) in a gasket pressing mode; the thermoelectric refrigerating sheet (8) is positioned between the lower fin (7) and the upper fin (9) and is in close contact with the lower fin and the upper fin through a heat-conducting interface material; the fan (10) is arranged at the upper end of the upper fin (9).
2. The thermoelectric refrigeration based two-phase submerged liquid cooled cabinet according to claim 1, wherein all of the electronic components (3) are submerged in the fluorinated liquid (4).
3. The thermoelectric refrigeration based two-phase submerged liquid cooling cabinet as claimed in claim 1 or 2, wherein the lead pipe (5) is installed at the side of the liquid cooling cabinet (2), and one end of the lead pipe is located below the liquid level of the fluorinated liquid (4) in the liquid cooling cabinet (2), and the other end of the lead pipe is located outside the liquid cooling cabinet (2) and is used for leading the wiring harness on the main board to the outside of the liquid cooling cabinet (2).
4. The thermoelectric refrigeration based two-phase submerged liquid cooling cabinet of claim 1 or 2, wherein the glass bead (6) filling height is equal to or lower than the liquid level of the fluorinated liquid (4).
5. The thermoelectric refrigeration based two-phase submerged liquid cooling cabinet as claimed in claim 3, wherein the glass beads (6) are filled at a height equal to or lower than the liquid level of the fluorinated liquid (4).
6. The thermoelectric refrigeration based two-phase submerged liquid cooling cabinet as claimed in claim 1, 2 or 5, wherein the surface of the lower fin (7) has a super-hydrophobic coating, and the super-hydrophobic coating is a Teflon coating with a contact angle greater than 150 degrees.
7. The thermoelectric refrigeration based two-phase submerged liquid cooling cabinet as claimed in claim 3, wherein the surface of the lower fin (7) has a super-hydrophobic coating, and the super-hydrophobic coating is a Teflon coating with a contact angle greater than 150 degrees.
8. The thermoelectric refrigeration based two-phase submerged liquid cooling cabinet as claimed in claim 4, wherein the surface of the lower fin (7) has a super-hydrophobic coating, and the super-hydrophobic coating is a Teflon coating with a contact angle greater than 150 degrees.
9. A two-phase submerged liquid-cooled enclosure based on thermoelectric refrigeration as claimed in claims 1, 2, 5, 7 or 8 wherein said thermoelectric refrigeration plate (8) is formed using an array of standard thermoelectric refrigeration plates.
10. The two-phase submerged liquid-cooled cabinet based on thermoelectric refrigeration as claimed in claim 6, wherein the thermoelectric refrigeration plate (8) is formed by using a plurality of standard thermoelectric refrigeration plate arrays.
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| CN202022254796.7U CN213485457U (en) | 2020-10-12 | 2020-10-12 | Two-phase immersed liquid cooling case based on thermoelectric refrigeration |
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| CN202022254796.7U CN213485457U (en) | 2020-10-12 | 2020-10-12 | Two-phase immersed liquid cooling case based on thermoelectric refrigeration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112188808A (en) * | 2020-10-12 | 2021-01-05 | 大连理工大学 | Two-phase immersed liquid cooling case based on thermoelectric refrigeration |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112188808A (en) * | 2020-10-12 | 2021-01-05 | 大连理工大学 | Two-phase immersed liquid cooling case based on thermoelectric refrigeration |
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