Data center immersion coolant blending apparatus

Abstract

The utility model provides a kind of data center immersion type coolant blending device, comprising: coolant container, coolant container is used to accommodate coolant and electronic equipment, wherein, coolant immerses electronic equipment;Drive device, the inlet of drive device is communicated with the outlet of coolant container;First valve, the inlet of first valve is communicated with the outlet of drive device;Plate heat exchanger, the high-temperature side inlet of plate heat exchanger is communicated with the outlet of first valve, and the high-temperature side outlet of plate heat exchanger is communicated with the inlet of coolant container;Blending branch, the inlet of blending branch is communicated with the inlet of first valve, and the outlet of blending branch is communicated with the outlet of first valve, and blending branch is used to blend additive to the coolant that flows through blending branch when first valve is closed.The utility model can dynamically adjust the content of additive in coolant by the blending of blending branch.

Description

Technical Field

[0001] This utility model relates to the field of computer heat dissipation technology, and in particular to a data center immersion coolant mixing device. Background Technology

[0002] Immersion liquid cooling for data centers is an emerging interdisciplinary technology, currently with limited large-scale application. Various types of coolants are used in immersion liquid cooling systems for data centers, such as fluorocarbons, hydrocarbons, and silicone oils. Except for fluorocarbons, which require strict chemical reaction synthesis and extraction in a workshop, the base oils used in the production of hydrocarbon and silicone oil coolants are common products from other industries. Because blended hydrocarbon and silicone oil coolants have better oxidation resistance, existing hydrocarbon and silicone oil coolants require blending with base oils and additives for application. Data center coolants have high requirements for dielectric properties; increasing the additive content reduces dielectric properties, while decreasing the additive content makes it difficult to meet long-term oxidation resistance requirements. It is precisely because of this contradiction that the application of existing hydrocarbon and silicone oil coolants is limited. Utility Model Content

[0003] The data center immersion coolant blending device provided by this utility model can add additives online through the blending branch, dynamically adjusting the additive content in the coolant. Thus, it can effectively improve the long-term oxidation resistance of the coolant while ensuring the dielectric properties of the coolant.

[0004] This utility model provides a data center immersion coolant mixing device, comprising:

[0005] A coolant container for containing coolant and electronic equipment, wherein the coolant immerses the electronic equipment;

[0006] A drive unit, the inlet of which is connected to the outlet of the coolant container;

[0007] A first valve, the inlet of which is connected to the outlet of the drive device;

[0008] A plate heat exchanger, wherein the high-temperature side inlet of the plate heat exchanger is connected to the outlet of the first valve, and the high-temperature side outlet of the plate heat exchanger is connected to the inlet of the coolant container;

[0009] A blending branch is provided, wherein the inlet of the blending branch is connected to the inlet of the first valve, and the outlet of the blending branch is connected to the outlet of the first valve. The blending branch is used to blend additives into the coolant flowing through the blending branch when the first valve is closed.

[0010] Optionally, the harmonic branch includes:

[0011] The second valve has its inlet connected to the inlet of the first valve;

[0012] A static mixer having a first inlet, a second inlet, and a mixture outlet, wherein the first inlet is connected to the outlet of a second valve, the mixture outlet is connected to the outlet of the first valve, and the second inlet is used to add the additive.

[0013] Optionally, the harmonic branch further includes:

[0014] An automatic dosing device, wherein the outlet of the automatic dosing device is connected to the second inlet, and the automatic dosing device is used to add the additive to the second inlet according to a preset dosing rate.

[0015] Optionally, it also includes a primary-side heat dissipation device, the inlet of which is connected to the low-temperature side outlet of the plate heat exchanger, and the outlet of the primary-side heat dissipation device is connected to the low-temperature side inlet of the plate heat exchanger. The primary-side heat dissipation device is used to dissipate heat for the plate heat exchanger.

[0016] Optionally, the electronic device and the primary-side heat dissipation device are configured to remain closed when the automatic dosing device adds the additive to the second inlet.

[0017] Optionally, the electronic device and the primary-side heat dissipation device are used to remain on and adjust the temperature of the coolant to 40°C-50°C during one cycle after the automatic dosing device adds the additive to the second inlet.

[0018] Optionally, the first valve is used to close before the automatic dosing device adds the additive to the second inlet, and the second valve is used to open before the automatic dosing device adds the additive to the second inlet.

[0019] Optionally, the first valve is configured to open after one cycle following the addition of the additive by the automatic dosing device to the second inlet, and the second valve is configured to close after one cycle following the addition of the additive by the automatic dosing device to the second inlet.

[0020] Optionally, the drive device is used to drive the coolant circulation at a preset flow rate when the first valve is closed, so that the coolant in the coolant container can complete the circulation within 1 hour to 2 hours.

[0021] Optionally, the automatic dosing device is used to add the additive to the second inlet according to a preset cycle.

[0022] In the technical solution provided by this utility model, by cooperating with the first valve and the blending branch, when additives need to be added, the first valve is closed, allowing the coolant to circulate through the blending branch, thus enabling the addition of additives to the coolant via the blending branch. Based on the technical solution provided by this utility model, online addition of additives can be achieved without blending in a blending plant. Therefore, when adding additives, a lower proportion than that in the blending plant can be added. During use, additives can be added as needed based on real-time changes in the antioxidant properties of the coolant. This ensures both good dielectric properties and long-term antioxidant properties of the coolant. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a data center immersion coolant mixing device according to an embodiment of the present invention;

[0024] Figure 2 This is a flowchart illustrating the process of mixing coolant using a data center immersion coolant mixing device, as described in another embodiment of this utility model. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] This utility model embodiment provides a data center immersion coolant mixing device, such as... Figure 1 As shown, it includes:

[0027] A coolant container for containing coolant and electronic equipment, wherein the coolant immerses the electronic equipment;

[0028] A drive unit, the inlet of which is connected to the outlet of the coolant container;

[0029] The first valve S1 has its inlet connected to the outlet of the drive device;

[0030] A plate heat exchanger, wherein the high-temperature side inlet of the plate heat exchanger is connected to the outlet of the first valve S1, and the high-temperature side outlet of the plate heat exchanger is connected to the inlet of the coolant container;

[0031] The blending branch has its inlet connected to the inlet of the first valve S1 and its outlet connected to the outlet of the first valve S1. The blending branch is used to blend additives into the coolant flowing through the blending branch when the first valve S1 is closed.

[0032] In the technical solution provided by this utility model embodiment, by cooperating with the first valve S1 and the blending branch, when additives need to be added, the first valve S1 is closed, allowing the coolant to circulate through the blending branch, thus realizing the addition of additives to the coolant through the blending branch. Based on the technical solution provided by this utility model embodiment, online addition of additives can be achieved without blending in a blending plant. Therefore, when adding additives, a lower proportion of additives than that in the blending plant can be added. During use, additives can be added as needed based on real-time changes in the antioxidant properties of the coolant. Thus, it is possible to ensure both good dielectric properties of the coolant and long-term antioxidant properties.

[0033] As an optional implementation, the harmonic branch includes:

[0034] The second valve S2 has its inlet connected to the inlet of the first valve S1.

[0035] A static mixer having a first inlet, a second inlet, and a mixture outlet, wherein the first inlet is connected to the outlet of the second valve S2, the mixture outlet is connected to the outlet of the first valve S1, and the second inlet is used to add the additive.

[0036] In some embodiments, the blending branch consists of valve S2, a static mixer, and an automatic dosing device. When the system needs to blend coolant or add additives, S1 is closed and S2 is opened. The system flow rate is adjusted by the drive device, and then the added additives are mixed with the coolant through the static mixer. The static mixer is an important device in the blending branch. Due to the low viscosity of the coolant, a static mixer such as the SV type can be selected to achieve better mixing results. The SV type static mixer can make the coolant fluid rotate left and right, constantly changing the flow mixing direction. It can not only push the fluid in the center to the periphery, but also push the fluid in the periphery to the center, thereby creating a good radial mixing effect. Compared with directly adding additives to the coolant container, the mixing effect is greatly improved.

[0037] As an optional implementation, the harmonic branch further includes:

[0038] An automatic dosing device, wherein the outlet of the automatic dosing device is connected to the second inlet, and the automatic dosing device is used to add the additive to the second inlet according to a preset dosing rate.

[0039] In some embodiments, the preset dosing rate should be matched with the circulation flow rate of the coolant driven by the drive device. The preset dosing rate can be set based on the circulation flow rate. Specifically, it can be set based on prior data; for example, if the combination of circulation flow rate and dosing rate produces a better mixing effect, the corresponding dosing rate is set as the preset dosing rate. The base oil of the coolant can be one or more types, and it only needs to be injected into the coolant container according to the formula ratio during use. The additive solution in the automatic dosing device is a solution pre-prepared using solvent oil and additives according to the formula ratio. Since the technical solution of this embodiment allows for convenient periodic replenishment of additives, the additive ratio does not need to be high to meet the antioxidant performance requirements within the cycle and reduce the significant decrease in dielectric properties (such as dielectric constant and dielectric loss factor).

[0040] As an optional implementation, a primary-side heat dissipation device is also included. The inlet of the primary-side heat dissipation device is connected to the low-temperature side outlet of the plate heat exchanger, and the outlet of the primary-side heat dissipation device is connected to the low-temperature side inlet of the plate heat exchanger. The primary-side heat dissipation device is used to dissipate heat from the plate heat exchanger.

[0041] In some embodiments, the primary-side heat dissipation device is mainly used to dissipate heat from the plate heat exchanger. Specifically, the primary-side heat dissipation device may include a circulation pipeline. The inlet of the circulation pipeline is connected to the low-temperature side outlet of the plate heat exchanger, and the outlet of the circulation pipeline is connected to the low-temperature side inlet of the plate heat exchanger. The circulation pipeline can be cooled by a fan or the like.

[0042] As an optional implementation, the electronic device and the primary-side heat dissipation device are configured to remain closed when the automatic dosing device adds the additive to the second inlet.

[0043] In some embodiments, after the base oil is initially added to the coolant container, the electronic equipment is not powered on during the first cycle of the blending process. At this time, the electronic equipment does not heat the base oil, thereby reducing the rate of oxidation of the base oil with oxygen in the air due to circulation, which is undesirable without additives. After the electronic equipment is powered on, if additives need to be added to the coolant, since the coolant itself has a certain degree of antioxidant capacity, it is not necessary to shut down the electronic equipment. Instead, the additives can be added to the second inlet while the electronic equipment remains powered on.

[0044] As an optional implementation, the electronic device and the primary-side heat dissipation device are used to remain open and regulate the temperature of the coolant to 40°C-50°C during one cycle after the automatic dosing device adds the additive to the second inlet. In some embodiments, after the base oil is initially added to the coolant container and one cycle is completed, the additive has already undergone preliminary mixing at the start of the second cycle. At this point, the coolant possesses a certain degree of antioxidant capacity, allowing the temperature of the circulating coolant to be adjusted to 40-50°C, which can improve the solubility and uniformity of the additive mixing. The electronic device is the target device served by the liquid cooling system. The main purpose of the liquid cooling system circulation is to cool the electronic device. In this embodiment, the electronic device, together with the primary-side heat dissipation device, also plays a role in temperature control and balance.

[0045] As an optional implementation, the first valve S1 is used to close before the automatic dosing device adds the additive to the second inlet, and the second valve S2 is used to open before the automatic dosing device adds the additive to the second inlet.

[0046] As an optional implementation, the first valve is used to open after one cycle following the addition of the additive by the automatic dosing device to the second inlet, and the second valve is used to close after one cycle following the addition of the additive by the automatic dosing device to the second inlet.

[0047] As an optional implementation, the drive device is used to drive the coolant circulation at a preset flow rate when the first valve S1 is closed, so that the coolant in the coolant container can complete the circulation within 1 hour to 2 hours.

[0048] As an optional implementation, the automatic dosing device is used to add the additive to the second inlet according to a preset cycle.

[0049] In some embodiments, the antioxidant performance threshold of the coolant can be adjusted according to the actual formulation and the blending cycle of the additives. The rotating bomb test time of the coolant can be used as a reference, or gas chromatography testing can be performed on the coolant, with the additive content as a reference. The specific value can be set according to actual needs. During the formulation testing stage, the approximate curve of the change in the rotating bomb test value or additive content of the coolant over different time periods can be tested. Based on this curve, a safe and reliable additive blending cycle can be selected as the preset cycle.

[0050] like Figure 2 As shown, a method for mixing coolant based on the electronic device immersion coolant mixing apparatus of the foregoing embodiments is provided, as detailed below:

[0051] During initial installation, after the data center immersion coolant mixing device is assembled, the electronic equipment is placed in the coolant container, and base oil is injected until the electronic equipment is submerged. Subsequently, an additive solution can be added to the automatic dosing device. Then, the first valve S1 is closed, and the second valve S2 is opened. The base oil is circulated by a drive device, such as a circulation pump, while the primary-side cooling equipment and electronic equipment remain off. During the automatic dosing process, the dosing rate and the circulation flow rate of the drive device should be matched. After the base oil in the coolant container completes one cycle of circulation, the base oil and additives are initially mixed, forming a coolant with a certain degree of oxidation resistance. At this point, the electronic equipment and primary-side cooling equipment are turned on, and the coolant temperature is maintained between 40°C and 50°C by controlling the heat output of the electronic equipment and the heat dissipation efficiency of the primary-side cooling equipment. After the drive device circulates the coolant in the container for another cycle, the additives and base oil are fully mixed. At this time, the second valve S2 is closed and the first valve S1 is opened, so that the coolant in the data center immersion coolant mixing device flows through the first valve S1 and then through the plate heat exchanger, and then circulates back to the coolant container.

[0052] The foregoing content is an exemplary description of the blending process of base oil and additives during initial installation. The following is an exemplary description of the process of adding additives when the antioxidant performance of the coolant decreases after the electronic equipment is powered on:

[0053] When the antioxidant performance of the coolant drops below a threshold (for example, this can be determined by a preset cycle; when the operating time reaches the preset cycle, the antioxidant performance of the coolant is considered to have dropped below the threshold), keep the electronic equipment and primary-side heat dissipation equipment on. Add the additive solution to the automatic dosing device, then close the first valve S1 and open the second valve S2. The coolant continues to circulate via a drive device, such as a circulation pump. During the automatic dosing process, the dosing rate and the circulation flow rate of the drive device should be matched. After the coolant in the coolant container completes one cycle of circulation, the coolant temperature is maintained between 40°C and 50°C by controlling the thermal power of the electronic equipment and the heat dissipation efficiency of the primary-side heat dissipation equipment. After the drive device circulates the coolant in the coolant container for another cycle, the additive and coolant are fully mixed. At this point, close the second valve S2 and open the first valve S1, allowing the coolant in the data center immersion coolant mixing device to flow through the plate heat exchanger after passing through the first valve S1, and then circulate back to the coolant container.

[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A data center immersion coolant mixing device, characterized in that, include: A coolant container for containing coolant and electronic equipment, wherein the coolant immerses the electronic equipment; A drive unit, the inlet of which is connected to the outlet of the coolant container; A first valve, the inlet of which is connected to the outlet of the drive device; A plate heat exchanger, wherein the high-temperature side inlet of the plate heat exchanger is connected to the outlet of the first valve, and the high-temperature side outlet of the plate heat exchanger is connected to the inlet of the coolant container; A blending branch is provided, wherein the inlet of the blending branch is connected to the inlet of the first valve, and the outlet of the blending branch is connected to the outlet of the first valve. The blending branch is used to blend additives into the coolant flowing through the blending branch when the first valve is closed.

2. The data center immersion coolant mixing device according to claim 1, characterized in that, The harmonic branch includes: The second valve has its inlet connected to the inlet of the first valve; A static mixer having a first inlet, a second inlet, and a mixture outlet, wherein the first inlet is connected to the outlet of a second valve, the mixture outlet is connected to the outlet of the first valve, and the second inlet is used to add the additive.

3. The data center immersion coolant mixing device according to claim 2, characterized in that, The harmonic branch also includes: An automatic dosing device, wherein the outlet of the automatic dosing device is connected to the second inlet, and the automatic dosing device is used to add the additive to the second inlet according to a preset dosing rate.

4. The data center immersion coolant mixing device according to claim 3, characterized in that, It also includes a primary-side heat dissipation device, the inlet of which is connected to the low-temperature side outlet of the plate heat exchanger, and the outlet of which is connected to the low-temperature side inlet of the plate heat exchanger. The primary-side heat dissipation device is used to dissipate heat from the plate heat exchanger.

5. The data center immersion coolant mixing device according to claim 4, characterized in that, The electronic device and the primary-side heat dissipation device are used to remain closed when the automatic dosing device adds the additive to the second inlet.

6. The data center immersion coolant mixing device according to claim 4, characterized in that, The electronic device and the primary-side heat dissipation device are used to remain on and adjust the temperature of the coolant to 40°C-50°C during one cycle after the automatic dosing device adds the additive to the second inlet.

7. The data center immersion coolant mixing device according to claim 3, characterized in that, The first valve is used to close before the automatic dosing device adds the additive to the second inlet, and the second valve is used to open before the automatic dosing device adds the additive to the second inlet.

8. The data center immersion coolant mixing device according to claim 3, characterized in that, The first valve is to be opened after one cycle following the addition of the additive by the automatic dosing device to the second inlet, and the second valve is to be closed after one cycle following the addition of the additive by the automatic dosing device to the second inlet.

9. The data center immersion coolant mixing device according to claim 2, characterized in that, The drive device is used to drive the coolant circulation at a preset flow rate when the first valve is closed, so that the coolant in the coolant container can complete the circulation within 1 hour to 2 hours.

10. The data center immersion coolant mixing device according to claim 3, characterized in that, The automatic dosing device is used to add the additive to the second inlet according to a preset cycle.

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