Single-phase immersion liquid cooling heat exchange device and system
By using a conductive plate to generate an electric field in a single-phase immersion liquid cooling heat exchange device to drive the coolant movement, the problem of high viscosity of oil coolant is solved, and a more efficient cooling effect is achieved.
Patent Information
- Application Number
- CN202420144190.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-01-19
AI Technical Summary
The existing oil immersion cooling devices have poor heat dissipation effects, mainly due to the high viscosity of the oil coolant, which leads to low cooling efficiency.
A single-phase immersion liquid cooling heat exchange device is designed, including an immersion chamber, a heat exchanger, a power supply and at least two conductive plates. The conductive plate is located outside the immersion cavity and is arranged toward the surface of the object to be cooled to form an electric field to drive the movement of the coolant.
The electric field generated by the conductive plate drives the coolant movement, enhancing the tendency of coolant convection mixing, and significantly improving the heat dissipation efficiency.
Smart Images
Figure CN222655584U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat dissipation of electronic information equipment, in particular to a single-phase immersion liquid cooling heat exchange device and a single-phase immersion liquid cooling heat exchange system. Background Art
[0002] Single-phase immersion liquid cooling heat exchange devices can be divided into fluorinated liquid immersion cooling devices and oil immersion cooling devices according to the type of coolant. Fluorinated liquid immersion cooling devices are less used in the industry due to environmental protection and environmental pollution. The current industry mainly uses oil immersion cooling devices. In the process of realizing the utility model, the inventor found that there are at least the following problems in the prior art: due to the high viscosity of oil coolant, the heat dissipation effect of oil immersion cooling is poor.
[0003] Therefore, how to provide a single-phase immersion liquid cooling heat exchange device with higher cooling efficiency is an urgent problem that technicians in this field need to solve. Utility Model Content
[0004] The purpose of the utility model is to provide a single-phase immersion liquid cooling heat exchange device with high cooling efficiency; another purpose of the utility model is to provide a single-phase immersion liquid cooling heat exchange system with high cooling efficiency.
[0005] In order to solve the above technical problems, the utility model provides a single-phase immersion liquid cooling heat exchange device, comprising an immersion chamber, a heat exchanger, a power supply and at least two conductive plates;
[0006] The interior of the immersion chamber is in communication with the heat exchanger, and the immersion chamber is used to contain the coolant and the object to be cooled;
[0007] The conductive plate is connected to the power supply, is located outside the immersion chamber, is arranged toward the surface of the object to be cooled, and an electric field acting on the object to be cooled is formed between the conductive plates; the coolant moves at least driven by the electric field.
[0008] Optionally, the minimum threshold of the electric field strength is related to the dielectric constant of the coolant, the density of the coolant, the surface tension of the coolant and the shape of the conductive plate.
[0009] Optionally, the power supply is an AC power supply.
[0010] Optionally, in the channel interconnected between the immersion chamber and the heat exchanger, a channel for injecting the coolant into the immersion chamber is connected to the lower part of the immersion chamber, and a channel for extracting the coolant from the immersion chamber is connected to the upper part of the immersion chamber.
[0011] Optionally, a plurality of placement areas are provided in the immersion chamber, and the objects to be cooled are fixed in corresponding placement areas.
[0012] Optionally, a plurality of the conductive plates are included, and at least one pair of conductive plates is correspondingly arranged in any placement area to form the electric field in each placement area.
[0013] Optionally, a plurality of pairs of the conductive plates are disposed corresponding to any of the placement areas.
[0014] Optionally, it further includes a diverter plate located in the immersion chamber, wherein the diverter plate is located below the placement area.
[0015] Optionally, the diverter plate is provided with an opening corresponding to the placement area.
[0016] The utility model also provides a single-phase immersion liquid cooling heat exchange system, comprising a single-phase immersion liquid cooling heat exchange device as described in any one of the above items.
[0017] The utility model provides a single-phase immersion liquid cooling heat exchange device, comprising an immersion chamber, a heat exchanger, a power supply and at least two conductive plates; the interior of the immersion chamber is interconnected with the heat exchanger, and the immersion chamber is used to contain cooling liquid and an object to be cooled; the conductive plate is connected to the power supply, the conductive plate is located outside the immersion chamber, the conductive plate is arranged toward the surface of the object to be cooled, and an electric field acting on the object to be cooled is formed between the conductive plates; the cooling liquid is at least driven by the electric field to move.
[0018] The electric field generated by the conductive plate drives the coolant to move. Since the conductive plate is arranged toward the surface of the object to be cooled, the electric field has a component perpendicular to the surface of the object to be cooled. The coolant can be driven by the electric field to move toward the surface of the object to be cooled and impact the surface of the object to be cooled, thereby strengthening the trend of convective mixing of the coolant in the immersion chamber and thus enhancing heat dissipation. Therefore, the beneficial effects of the present application at least include having a higher cooling efficiency for the object to be cooled.
[0019] The utility model also provides a single-phase immersion liquid cooling heat exchange system, which also has the above-mentioned beneficial effects and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1A schematic diagram of the structure of a single-phase immersion liquid cooling heat exchange device provided by an embodiment of the utility model;
[0022] Figure 2 A schematic structural diagram of a specific single-phase immersion liquid cooling heat exchange device provided in an embodiment of the utility model.
[0023] In the figure: 1. Immersion chamber, 2. Heat exchanger, 3. Conductive plate, 4. Power supply, 5. Placement area, 6. Object to be cooled, 7. Pump, 8. Diverter plate. DETAILED DESCRIPTION
[0024] The core of the utility model is to provide a single-phase immersion liquid cooling heat exchange device. In the prior art, the coolant will flow in the immersion chamber, and after the object to be cooled is placed in the immersion chamber, a channel for the coolant to flow will be formed based on the surface of the object to be cooled, so that the coolant will only flow on the surface of the object to be cooled in a direction parallel to the surface of the object to be cooled, resulting in low cooling efficiency.
[0025] The utility model provides a single-phase immersion liquid cooling heat exchange device, including an immersion chamber, a heat exchanger, a power supply and at least two conductive plates; the interior of the immersion chamber is interconnected with the heat exchanger, and the immersion chamber is used to contain the coolant and the object to be cooled; the conductive plate is connected to the power supply, the conductive plate is located on the outside of the immersion chamber, the conductive plate is arranged toward the surface of the object to be cooled, and an electric field acting on the object to be cooled is formed between the conductive plates; the coolant is at least driven by the electric field to move.
[0026] The electric field generated by the conductive plate drives the coolant to move. Since the conductive plate is arranged toward the surface of the object to be cooled, the electric field has a component perpendicular to the surface of the object to be cooled. The coolant can be driven by the electric field to move toward the surface of the object to be cooled and impact the surface of the object to be cooled, thereby strengthening the trend of convection mixing of the coolant in the immersion chamber and thus enhancing heat dissipation.
[0027] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.
[0028] Embodiment 1
[0029] Please refer to Figure 1 , Figure 1 A schematic structural diagram of a single-phase immersion liquid cooling heat exchange device provided in an embodiment of the utility model.
[0030] See also Figure 1 In an embodiment of the utility model, a single-phase immersion liquid cooling heat exchange device includes an immersion chamber 1, a heat exchanger 2, a power supply 4 and at least two conductive plates 3; the interior of the immersion chamber 1 is interconnected with the heat exchanger 2, and the immersion chamber 1 is used to contain a coolant and an object to be cooled 6; the conductive plate 3 is connected to the power supply 4, the conductive plate 3 is located on the outside of the immersion chamber 1, the conductive plate 3 is arranged toward the surface of the object to be cooled 6, and an electric field acting on the object to be cooled 6 is formed between the conductive plates 3; the coolant is at least driven by the electric field to move.
[0031] The single-phase immersion liquid cooling heat exchange device provided in the embodiment of the utility model is mainly used to dissipate heat from the server, and the heat generated by the server mainly comes from the work of the chip, so the object to be cooled 6 in this embodiment is mainly a chip. Of course, the single-phase immersion liquid cooling heat exchange device provided in this embodiment is also suitable for cooling other types of objects to be cooled 6, and the specific type of the object to be cooled 6 is not specifically limited in this embodiment.
[0032] The above-mentioned immersion chamber 1 is mainly used to load the object to be cooled 6 and the coolant. The immersion chamber 1 usually needs to have good sealing properties to prevent the coolant from being lost. The interior of the immersion chamber 1 needs to be interconnected with the heat exchanger 2 so that the coolant can flow between the immersion chamber 1 and the heat exchanger 2. The heat exchanger 2 is used to cool the coolant. The specific structure of the heat exchanger 2 can refer to the prior art and is not specifically limited here. In this embodiment, the coolant will circulate between the immersion chamber 1 and the heat exchanger 2 to cool the object to be cooled 6.
[0033] The immersion chamber 1 is used to contain the cooling liquid and the object to be cooled 6. A placement area 5 is provided in the immersion chamber 1. The object to be cooled 6 can be fixed in the placement area 5 in the immersion chamber 1. In this embodiment, a conductive plate 3 is provided on the outside of the immersion chamber 1. The conductive plate 3 needs to be connected to the power supply 4 to form an electric field between the conductive plates 3. The electric field needs to act on the placement area 5 in the immersion chamber 1 so as to act on the cooling liquid near the object to be cooled 6 during operation. Since the conductive plate 3 is arranged toward the surface of the object to be cooled 6, the electric field has a component perpendicular to the surface of the object to be cooled 6. And since the cooling liquid can at least be driven by the electric field to move, the cooling liquid in this embodiment can move toward the surface of the object to be cooled 6 and impact the surface of the object to be cooled 6 under the drive of the electric field. Usually, the conductive plate 3 is a metal plate, and the corresponding material of the immersion chamber 1 needs to avoid isolation of the electric field.
[0034] Normally, the electric field generated by the conductive plate 3 is perpendicular to the surface of the object to be cooled 6. For example, if the object to be cooled 6 is a chip, the coolant will flush the surface of the chip under the drive of the electric field, rather than just brushing the chip in a direction parallel to the chip surface, thereby more efficiently removing the heat generated by the chip. In this embodiment, the magnitude of the electric field force is related to the conductivity, dielectric constant and electric field state of the coolant. Under the action of the electric field force, the fluid shows a tendency to enhance convective mixing. In particular, it has a significant effect of promoting convective mixing for fluids in a laminar state, thereby enhancing convective heat transfer in single-phase immersion cooling.
[0035] In this embodiment, the magnitude of the electric field strength is related to the following factors: the effect of the electric field is limited by a threshold value, and it works when it exceeds the threshold value, otherwise it does not work. This is because the effect of the electric field on heat exchange can ultimately be attributed to the stress generated by the electric field, and it is the electric field force that improves the heat exchange. When there is no electric field, the system in the single-phase immersion liquid cooling heat exchange device has established an equilibrium state. When the electric field is added, a new stress appears in the originally stable state. This stress cannot have a fundamental impact on the original state when it is very small. Only when this stress is large enough to destroy the original equilibrium state can it play its role. In order to make the electric field force large enough to affect the equilibrium state of the system, the electric field strength must reach a certain intensity, so the above threshold is generated. Since the stress generated by the electric field is related to the dielectric constant of the medium, the shape of the electrode, etc., and the balance of the system is related to the physical properties of the working fluid, such as density, surface tension, etc., that is, the minimum threshold of the electric field strength in this embodiment is related to the dielectric constant of the coolant, the density of the coolant, the surface tension of the coolant and the shape of the conductive plate 3. Since the above minimum threshold is different for different situations, the specific size of the minimum threshold is not specifically limited in this embodiment.
[0036] It should be clear that the placement area 5 corresponds to the location of the object to be cooled 6 that mainly generates heat. Taking a chip as an example, the chip will be installed in the server during operation, and the server is placed in the immersion chamber 1 as a whole. For the server, the main heat-generating component is the chip, so the placement area 5 will specifically be the location of the chip, and the electric field will specifically act on the location of the chip.
[0037] Specifically, in this embodiment, the coolant is usually an oil coolant. The oil molecules in the oil coolant can be polarized under the action of the electric field and thus driven to move by the electric field. Of course, other types of coolants can also be used in this embodiment as long as they can be driven to move by the electric field.
[0038] The single-phase immersion liquid cooling heat exchange device provided by the embodiment of the utility model generates an electric field through the conductive plate 3 to drive the coolant to move. Since the electric field has a component perpendicular to the surface of the object to be cooled 6, the coolant will move toward the surface of the object to be cooled 6 and impact the surface of the object to be cooled 6, thereby strengthening the trend of convective mixing of the coolant in the immersion chamber 1, thereby enhancing heat dissipation.
[0039] The specific contents of the single-phase immersion liquid cooling heat exchange device provided by the utility model will be described in detail in the following utility model embodiments.
[0040] Embodiment 2
[0041] Please refer to Figure 2 , Figure 2 A schematic structural diagram of a specific single-phase immersion liquid cooling heat exchange device provided in an embodiment of the utility model.
[0042] Different from the above utility model embodiment, the utility model embodiment further defines the structure of the single-phase immersion liquid cooling heat exchange device on the basis of the above utility model embodiment. The rest of the contents have been described in detail in the above utility model embodiment and will not be repeated here.
[0043] See also Figure 2 In an embodiment of the utility model, in the channel connecting the immersion chamber 1 and the heat exchanger 2, the channel for injecting the coolant into the immersion chamber 1 is connected to the lower part of the immersion chamber 1, and the channel for extracting the coolant from the immersion chamber 1 is connected to the upper part of the immersion chamber 1.
[0044] In this embodiment, the immersion chamber 1 and the heat exchanger 2 need to be connected through at least two channels to achieve the circulation of the coolant inside them. Among the channels that connect the immersion chamber 1 and the heat exchanger 2, the channel for injecting the coolant into the immersion chamber 1 is usually connected to the lower part of the immersion chamber 1, and the channel for extracting the coolant from the immersion chamber 1 is usually connected to the upper part of the immersion chamber 1, so that the coolant flows from bottom to top in the immersion chamber 1, so that the coolant can fully contact the object to be cooled 6. A pump 7 is usually required in the above-mentioned channel to drive the circulation of the coolant. The specific position, quantity, structure, etc. of the pump 7 can be set according to actual conditions and are not specifically limited here.
[0045] Normally, in the present embodiment, a plurality of placement areas 5 are usually provided in the immersion chamber 1 to place a plurality of objects to be cooled 6, so as to achieve synchronous cooling of the plurality of objects to be cooled 6. Normally, the spacing between the plurality of placement areas 5 is equal. On this basis, the present embodiment may further include a diverter plate 8 located in the immersion chamber 1, the diverter plate 8 is located below the placement area 5, and the diverter plate 8 is usually also required to be located above the channel for pouring coolant into the immersion chamber 1. The diverter plate 8 can disperse the coolant entering the immersion chamber 1 from the lower pipeline laterally as quickly as possible, and provide the dispersed coolant to each placement area 5, so as to ensure that the temperature of the coolant reaching the vicinity of each placement area 5 is substantially the same, so that each object to be cooled 6 has substantially the same cooling effect. Specifically, the diverter plate 8 is usually provided with an opening corresponding to the placement area 5, so as to ensure that the coolant with a lower temperature can contact the object to be cooled 6 as quickly as possible for cooling.
[0046] Furthermore, in this embodiment, a plurality of conductive plates 3 may be specifically included, and at least one pair of conductive plates 3 is correspondingly arranged in any placement area 5 to form the electric field in each of the placement areas 5. Each pair of conductive plates 3 may provide an electric field, which acts on the corresponding placement area 5 to drive the coolant to flow toward the surface of the object to be cooled 6 placed in the placement area 5. Furthermore, a plurality of pairs of conductive plates 3 may be correspondingly arranged in any of the placement areas 5 to ensure that there is sufficient driving force to drive the coolant to flow toward the surface of the object to be cooled 6. The number and position of the conductive plates 3 may be set according to actual conditions, and are not specifically limited here.
[0047] Specifically, in this embodiment, the power source 4 connected to the conductive plate 3 can be an AC power source 4. The direction of the electric field generated by the AC power source 4 will change periodically, so that the driving force generated by the electric field will oscillate periodically. On this basis, the driving force can drive the coolant to flow back and forth periodically, thereby effectively destroying the boundary layer of the flow heat transfer, thereby strengthening the heat transfer and improving the heat dissipation efficiency. The specific frequency and other contents of the above-mentioned AC power source 4 can be set according to actual conditions. By adjusting the frequency of the AC power source 4, the frequency of the reciprocating flow of the coolant can be adjusted, thereby controlling its heat dissipation effect. The specific contents of the above-mentioned control process need to be set according to actual conditions, and are not specifically limited here.
[0048] The single-phase immersion liquid cooling heat exchange device provided by the embodiment of the utility model generates an electric field through the conductive plate 3 to drive the coolant to move. Since the electric field has a component perpendicular to the surface of the object to be cooled 6, the coolant will move toward the surface of the object to be cooled 6 and impact the surface of the object to be cooled 6, thereby strengthening the trend of convective mixing of the coolant in the immersion chamber 1, thereby enhancing heat dissipation.
[0049] Embodiment 3
[0050] The present utility model embodiment also provides a single-phase immersion liquid cooling heat exchange system, which includes a single-phase immersion liquid cooling heat exchange device as provided in any of the utility model embodiments described above. Other structures in the single-phase immersion liquid cooling heat exchange system can refer to the prior art and will not be described in detail here.
[0051] Since the single-phase immersion liquid cooling heat exchange system of this embodiment uses the single-phase immersion liquid cooling heat exchange device provided by the above-mentioned utility model embodiment, the single-phase immersion liquid cooling heat exchange system can also have a higher cooling efficiency.
[0052] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0053] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0054] The above is a detailed introduction to a single-phase immersion liquid cooling heat exchange device and a single-phase immersion liquid cooling heat exchange system provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. A single-phase immersion liquid cooling heat exchange device, characterized in that: It includes an immersion chamber, a heat exchanger, a power supply and at least two conductive plates; The interior of the immersion chamber is in communication with the heat exchanger, and the immersion chamber is used to contain the coolant and the object to be cooled; The conductive plate is connected to the power supply, is located outside the immersion chamber, is arranged toward the surface of the object to be cooled, and an electric field acting on the object to be cooled is formed between the conductive plates; the coolant moves at least driven by the electric field.
2. The single-phase immersion liquid cooling heat exchange device according to claim 1, characterized in that: The lowest threshold value of the electric field strength is related to the dielectric constant of the coolant, the density of the coolant, the surface tension of the coolant, and the shape of the conductive plate.
3. The single-phase immersion liquid cooling heat exchange device according to claim 1, characterized in that: The power supply is an alternating current power supply.
4. The single-phase immersion liquid cooling heat exchange device according to claim 1, characterized in that: In the channel interconnected between the immersion chamber and the heat exchanger, a channel for injecting the coolant into the immersion chamber is connected to the lower part of the immersion chamber, and a channel for extracting the coolant from the immersion chamber is connected to the upper part of the immersion chamber.
5. The single-phase immersion liquid cooling heat exchange device according to claim 4, characterized in that: A plurality of placement areas are arranged in the immersion chamber, and the objects to be cooled are fixed in the corresponding placement areas.
6. The single-phase immersion liquid cooling heat exchange device according to claim 5, characterized in that: It comprises a plurality of the conductive plates, and any one of the placement areas is correspondingly provided with at least one pair of conductive plates to form the electric field in each of the placement areas.
7. The single-phase immersion liquid cooling heat exchange device according to claim 6, characterized in that: A plurality of pairs of the conductive plates are correspondingly arranged in any of the placement areas.
8. The single-phase immersion liquid cooling heat exchange device according to claim 4, characterized in that: Also included is a diverter plate located in the immersion chamber, wherein the diverter plate is located below the placement area.
9. The single-phase immersion liquid cooling heat exchange device according to claim 8, characterized in that: The diverter plate is provided with an opening corresponding to the placement area.
10. A single-phase immersion liquid cooling heat exchange system, characterized in that: It comprises a single-phase immersion liquid cooling heat exchange device as claimed in any one of claims 1 to 9.