An immersion liquid-cooled server, control system and test method thereof

Abstract

The application discloses an immersed liquid cooling server, a control system and a test method thereof, and belongs to the technical field of liquid cooling servers. The immersed liquid cooling server comprises a placeholder air bag top plate arranged on the lower side of an upper cover of a case, and the lower side of the placeholder air bag top plate is connected with a placeholder air bag; a top support air bag support plate is installed in the case; the top support air bag support plate is supported with a top support air bag, and the upper side of the top support air bag is supported with a placeholder air bag bottom plate. During air cooling environment aging test, the top support air bag is inflated, the placeholder air bag is exhausted, and the placeholder air bag is in a flat state, thereby effectively avoiding that the placeholder air bag blocks an air duct and guaranteeing the reliability and accuracy of the aging test. When working under an immersed liquid cooling environment, the placeholder air bag is inflated, the top support air bag is exhausted, and the placeholder air bag is expanded, so that the placeholder air bag can realize placeholder in the server case and effectively save the use amount of fluorinated liquid in the server case. Without repeatedly disassembling and assembling the placeholder block structure, the problems of production efficiency reduction, product damage risk increase and fault rate increase caused by repeatedly disassembling and assembling the placeholder block structure can be effectively avoided.

Description

Technical Field

[0001] This invention belongs to the field of liquid-cooled server technology, specifically an immersion liquid-cooled server, a control system, and a testing method thereof. Background Technology

[0002] With the booming development of the digital economy, immersion liquid cooling products have extremely low PUE, which can save energy significantly and is the development trend of green data centers.

[0003] Data center server cooling methods can be divided into two types: air cooling and liquid cooling. Air cooling started earlier and is more mature; liquid cooling, especially immersion liquid cooling, has only emerged in recent years.

[0004] Immersion liquid cooling involves placing server components in a liquid-cooled enclosure filled with fluorinated liquid. The server's heat dissipation components directly contact the fluorinated liquid for heat exchange. Because fluorinated liquid is extremely expensive, a large number of spacer blocks are typically used inside the liquid-cooled enclosure to save on usage.

[0005] Currently, immersion liquid cooling technology is still in its development stage, and factory testing fixtures and methods are still in the exploratory phase. Considering factors such as manufacturability, maintainability, and manufacturing costs, air-cooled test fixtures are typically used in factories for aging tests of immersion liquid-cooled server products. In an immersion liquid-cooled environment, the spacer block does not affect system heat dissipation; however, when aging tests are conducted in an air-cooled environment, the spacer block obstructs airflow, disrupts internal airflow, and leads to system heat dissipation failures, compromising test accuracy.

[0006] Currently, to ensure the accuracy and reliability of aging tests, the server chassis needs to be disassembled and all placeholder blocks removed before aging tests in an air-cooled environment. After the aging test is completed, the placeholder blocks are reinstalled inside the server. This leads to the following problems:

[0007] 1. Poor manufacturability. Normally, after the complete machine testing is finished, the next step is machine inspection and packaging. Now, after testing, the machine needs to be transported back to the assembly station to install placeholders, which is detrimental to assembly line operations and severely impacts production efficiency.

[0008] 2. Increased risk of product damage and higher failure rate. Before and after aging tests, server disassembly, removal of placeholder blocks, and installation of placeholder blocks are required. Subsequent processes at the factory do not retest the products. If product failures occur during the placeholder block installation stage and cannot be detected or intercepted, the faulty products will directly reach the customer's data center, significantly increasing the product failure rate. Summary of the Invention

[0009] To address the aforementioned issues, this invention provides an immersion liquid-cooled server, a control system, and a testing method thereof. This allows for aging tests of the immersion liquid-cooled server in an air-cooled environment without disassembling the spacer block structure, effectively avoiding the problems of decreased production efficiency, increased product damage risk, and higher failure rates caused by repeated disassembly and reassembly of the spacer block.

[0010] This invention is achieved, in one respect, through the following technical solution:

[0011] An immersion liquid-cooled server includes a chassis cover, a spacer airbag top plate positioned and installed on the lower side of the chassis cover, and a spacer airbag connected to the lower side of the spacer airbag top plate; several top support airbag support plates are also positioned and installed inside the server chassis; top support airbags are supported on the top support airbag support plates, and a spacer airbag bottom plate that fits and connects to the lower side of the spacer airbag is supported on the upper side of the top support airbag.

[0012] A further improvement of the present invention is that a plurality of guide rods are connected to the top plate of the spacer airbag, the top support airbag support plate is fixedly installed at the lower end of the guide rods, and the bottom plate of the spacer airbag slides and guides the guide rods.

[0013] A further improvement of the present invention is that the spacer airbag has a spacer airbag nozzle on the side near the top plate of the spacer airbag, and the top support airbag has a top support airbag nozzle on the side near the top support airbag support plate.

[0014] A further improvement of the present invention is that both the spacer airbag and the top support airbag have an accordion-like structure.

[0015] A further improvement of the present invention is that the top support airbag has a through hole in the middle for the guide rod to pass through.

[0016] A further improvement of the present invention is that the spacer air nozzles on several support airbags are connected in parallel.

[0017] Another aspect of the present invention is achieved through the following technical solution:

[0018] A control system for an immersion liquid-cooled server includes a spacer airbag pressure sensor for detecting the air pressure inside the spacer airbag, a top support airbag pressure sensor for detecting the air pressure inside the top support airbag, a mode switch, a BMC chip, an air-cooling status indicator, a liquid-cooling status indicator, an inflation pipe, an exhaust pipe, and a switching valve. The switching valve is used to switch the inflation and deflation states of the spacer airbag nozzle and the top support airbag nozzle. The BMC chip is connected to the spacer airbag pressure sensor, the top support airbag pressure sensor, the mode switch, the air-cooling status indicator, the liquid-cooling status indicator, and the switching valve.

[0019] A further improvement of the present invention is that when the mode switch is in liquid cooling mode, the BMC chip controls the switching valve to connect the inflation pipe and the spacer airbag nozzle, and connect the exhaust pipe and the top support airbag nozzle; when the mode switch is in air cooling mode, the BMC chip controls the switching valve to connect the exhaust pipe and the spacer airbag nozzle, and connect the inflation pipe and the top support airbag nozzle.

[0020] The third aspect of the present invention is achieved through the following technical solution:

[0021] A testing method for an immersion liquid-cooled server includes the following steps:

[0022] Step 1: Set up the test environment; connect the air source device hose to the server's air inlet pipe, connect the air-cooled heat dissipation fixture to the server, and install the power supply;

[0023] Step 2: Switch the mode switch to air-cooling mode; when the BMC chip detects that the mode switch is in air-cooling mode, the air-cooling status indicator light will be lit; adjust the switching valve so that the inflation port is connected to the inner cavity of the top support airbag and the exhaust pipe is connected to the inner cavity of the spacer airbag, so that the inflation of the top support airbag and the exhaust of the spacer airbag are performed simultaneously; compress the spacer airbag to a flat state.

[0024] Step 3: Power on the server and perform an aging test;

[0025] Step 4: After the aging test is completed, the server is shut down;

[0026] Step 5: Switch the mode switch to liquid cooling mode; when the BMC chip detects that the mode switch is in liquid cooling mode, the liquid cooling status indicator light will illuminate; adjust the switching valve so that the inflation port is connected to the inner cavity of the spacer airbag and the exhaust pipe is connected to the inner cavity of the top support airbag, so that the spacer airbag is inflated and the top support airbag is deflated at the same time; the spacer airbag expands to its maximum volume;

[0027] Step 6: Remove the air-cooled heat dissipation fixture, inflation pipe, exhaust pipe and switching valve, and seal the spacer airbag nozzle and the support airbag nozzle;

[0028] Step 7: Visual inspection, packaging and shipping.

[0029] A further improvement of the present invention includes a method for alarming and protecting an airbag that occupies space, the method comprising the following steps:

[0030] Step 1: The BMC chip acquires the mode switch signal. When it is high, it is determined to be a liquid cooling environment; when it is low, it is determined to be an air cooling environment.

[0031] Step 2: When the BMC chip determines that it is in air-cooling mode:

[0032] When the spacer airbag is inflated, the air-cooling status indicator light is red, indicating a warning state; air-cooling is not supported at this time, and the BMC chip will not allow the system to power on.

[0033] When the spacer airbag is in a compressed state, the air-cooling status indicator light is green, and the server is working normally;

[0034] Step 3: When the BMC chip determines that it is in liquid cooling mode:

[0035] When the spacer airbag is inflated, the liquid cooling status indicator light is green, and the server is working normally.

[0036] When the spacer airbag is in a compressed state, the liquid cooling status indicator light will be red as an alarm, but this will not affect the server's startup and operation.

[0037] As can be seen from the above technical solutions, the beneficial effects of the present invention are:

[0038] The overall structure is simple, convenient, flexible, and practical. It eliminates the need for repeated disassembly and reassembly of the spacer blocks, effectively avoiding the problems of decreased production efficiency, increased product damage risk, and higher failure rates caused by repeated spacer block disassembly and reassembly. During aging tests of this immersion liquid-cooled server in an air-cooled environment, multiple top support airbags are inflated while the spacer airbags are simultaneously deflated. This causes the top support airbags to expand, and the spacer airbag base plate compresses them upwards to a flattened state. Because the volume change of the top support airbags during expansion is much smaller than the volume change of the spacer airbags during compression, it effectively prevents the spacer airbags from obstructing the airflow, disrupting the internal heat dissipation airflow of the server, and preventing heat dissipation failures. This ensures the reliability and accuracy of aging tests of the immersion liquid-cooled server in an air-cooled environment. When operating normally in an immersion liquid cooling environment, the spacer airbag is inflated to its maximum volume by inflating the spacer airbag and simultaneously deflating multiple top support airbags. The spacer airbag base plate then compresses the top support airbags downwards to a flat state. Since the volume change of the spacer airbag during expansion is much greater than the volume change of the top support airbags during compression, it can effectively occupy space within the server chassis, acting as a spacer block. This effectively saves on the amount of fluorinated liquid used inside the server chassis, greatly reducing operating costs. Attached Figure Description

[0039] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the inflated state of the spacer airbag in a specific embodiment of the present invention.

[0041] Figure 2 This is a schematic diagram of the compression state of the spacer airbag in a specific embodiment of the present invention.

[0042] Figure 3 This is a schematic diagram of the CMR chip connection according to a specific embodiment of the present invention.

[0043] Figure 4 This is a schematic diagram illustrating the switching valve state in a specific embodiment of the present invention.

[0044] Figure 5 This is a schematic diagram of the second switching valve state in a specific embodiment of the present invention.

[0045] In the attached diagram: 1. Chassis top cover, 2. Top plate of the spacer airbag, 3. Spacer airbag, 4. Guide rod, 5. Bottom plate of the spacer airbag, 6. Top support airbag, 7. Support plate of the top support airbag, 8. Air nozzle of the spacer airbag, 9. Air nozzle of the top support airbag, 10. Switching valve. Detailed Implementation

[0046] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0047] like Figure 1-2 As shown, this invention discloses an immersion liquid-cooled server, including a chassis cover 1, a horizontal spacer airbag top plate 2 positioned and installed on the lower side of the chassis cover 1, and a spacer airbag 3 connected to the lower side of the spacer airbag top plate 2; a plurality of horizontal top support airbag support plates 7 are also positioned and installed inside the server chassis; a top support airbag 6 is supported and connected to the upper side of the top support airbag support plate 7, and a spacer airbag bottom plate 5 is supported on the upper side of the top support airbag 6 and is fitted and connected to the lower side of the spacer airbag 3.

[0048] During the aging test of this immersion liquid-cooled server in an air-cooled environment, air is injected into multiple top support airbags 6 while the spacer airbags 3 are deflated simultaneously. This causes the top support airbags 6 to expand, and the spacer airbags 3 are compressed upwards to a flat state by the spacer airbag base plate 5. Since the volume change of the top support airbags 6 during expansion is much smaller than the volume change of the spacer airbags 3 during compression, the spacer airbags 3 are effectively prevented from blocking the air duct, disturbing the internal heat dissipation airflow of the server, and causing heat dissipation failure. This ensures the reliability and accuracy of the aging test of the immersion liquid-cooled server in an air-cooled environment. When operating normally in an immersion liquid cooling environment, the spacer airbag 3 is inflated to its maximum volume by inflating the spacer airbag 3 while simultaneously deflating multiple support airbags 6. The spacer airbag 3 is then compressed downwards to a flattened state by the spacer airbag base plate 5. Since the volume change of the spacer airbag 3 during expansion is much greater than the volume change of the support airbags 6 during compression, it effectively occupies space within the server chassis, acting as a spacer block. This effectively reduces the amount of fluorinated liquid used inside the server chassis, significantly saving operating costs. The overall structure is simple, convenient, flexible, and practical. It eliminates the need for repeated disassembly and reassembly of the spacer block structure, effectively avoiding the problems of decreased production efficiency, increased product damage risk, and higher failure rates caused by repeated disassembly and reassembly.

[0049] Among them, such as Figure 1-2 As shown, several vertically downward guide rods 4 are connected to the top plate 2 of the spacer airbag. The top airbag support plate 7 is horizontally fixedly installed at the lower end of the guide rods 4. The bottom plate 5 of the spacer airbag is vertically (up and down) slidably guided by the guide rods 4. The number of guide rods 4 is selected to be four or six, distributed around the spacer airbag 3. The top airbag support plate 7 is hoisted through the guide rods 4, and the bottom plate 5 of the spacer airbag is raised and lowered through the guide rods 4, ensuring the accuracy and reliability of the raising and lowering action of the bottom plate 5 of the spacer airbag, thereby ensuring the reliability of the expansion and compression action of the spacer airbag 3.

[0050] Furthermore, the upper end of the guide rod 4 passes through the top plate 2 of the spacer airbag and is fixedly connected to the top cover 1 of the chassis. A rubber pad is provided between the top plate 2 of the spacer airbag and the top cover 1 of the chassis, and a support block screwed to the upper end of the guide rod 4 is provided on the lower side of the top plate 2 of the spacer airbag. This can realize the reliable positioning and installation of the top plate 2 of the spacer airbag, and ensure the reliability of the telescopic movement (expansion or compression) of the spacer airbag 3.

[0051] like Figure 1-2As shown, a spacer airbag nozzle 8 is located on the upper side of the spacer airbag 3, and a top support airbag nozzle 9 is located on the lower side of the top support airbag 6. Both the spacer airbag nozzle 8 and the top support airbag nozzle 9 have a self-sealing structure. When connected to a pipeline, they automatically connect; when the pipeline is disconnected, they automatically seal, preventing air leakage from the spacer airbag 3 and the top support airbag 6, thus ensuring convenient operation. Furthermore, the spacer airbag nozzle 8 is located on the upper side of the spacer airbag 3, and the top support airbag nozzle 9 is located on the lower side of the top support airbag 6, closely attached to their respective fixed ends. This effectively prevents positional changes of the spacer airbag nozzle 8 and the top support airbag nozzle 9 during the extension and retraction of the spacer airbag 3 and the top support airbag 6, ensuring reliable connection to external valves or pipelines.

[0052] Furthermore, since the top plate 2 of the spacer airbag is supported by a rubber pad between it and the top cover 1 of the chassis, the air nozzle 8 of the spacer airbag is positioned and installed on the upper side of the top plate 2 of the spacer airbag, communicating with the inside of the spacer airbag 3, and extending outward through the gap between the top plate 2 of the spacer airbag and the top cover 1 of the chassis, so that the air nozzle 8 of the spacer airbag is always in a fixed state, thus achieving reliable positioning and installation of the air nozzle 8 of the spacer airbag and reliable connection with the valve.

[0053] Both the spacer airbag 3 and the top support airbag 6 have an accordion-like structure. When inflated, both the spacer airbag 3 and the top support airbag 6 can extend axially (vertically, i.e., up-down) and are flattened axially when compressed during exhaust. This effectively achieves the spacer block function when the spacer airbag 3 extends, the space-avoiding function when flattened (making room for air cooling), and the upward support function of the top support airbag 6 on the spacer airbag base plate 5 (compressing the spacer airbag 3 upwards). The horizontal cross-section of the spacer airbag 3 must be much larger than the horizontal cross-section of multiple top support airbags 6, so that the volume change of the spacer airbag 3 when extended (expanded) is much greater than the volume change of the top support airbag 6 when retracted (flattened), thus achieving the spacer airbag 3's function of occupying space within the chassis. The top support airbag 6 has a very small horizontal cross-sectional radius, ensuring that it does not obstruct the air cooling channel after extension (expansion), thereby ensuring the reliability of aging tests under air-cooled conditions.

[0054] The top support airbag 6 has a vertical through hole in the middle for the guide rod 4 to pass through. The top support airbag 6 has a vertically continuous structure and is fitted onto the guide rod 4, thus ensuring the reliability of the installation of the top support airbag 6. Furthermore, since the top support airbag 6 has a slender structure when it is extended (inflated), the guide rod 4 can guide and limit the top support airbag 6 to avoid bending and deformation, ensuring the reliability of the upward support of the spacer airbag base plate 5 (upward compression of the spacer airbag 3).

[0055] To ensure the synchronous inflation and deflation of multiple support airbags 6 and to ensure the consistency of air pressure during inflation, the spacer airbag nozzles 8 on several support airbags 6 are connected in parallel and share a self-sealing quick-connect connector.

[0056] like Figure 3 As shown, the present invention also discloses a control system for an immersion liquid-cooled server, including a spacer airbag pressure sensor for detecting the air pressure inside the spacer airbag 3, a top support airbag pressure sensor for detecting the air pressure inside the top support airbag 6, a mode switch, a BMC chip, an air-cooling status indicator, a liquid-cooling status indicator, an inflation pipe, an exhaust pipe, and a switching valve 10. The switching valve 10 is used to switch the inflation and deflation states of the spacer airbag nozzle 8 and the top support airbag nozzle 9. The BMC chip is connected to the spacer airbag pressure sensor, the top support airbag pressure sensor, the mode switch, the air-cooling status indicator, the liquid-cooling status indicator, and the switching valve 10.

[0057] The pressure sensor for the spacer airbag is placed inside the spacer airbag 3 to continuously monitor its internal pressure. The pressure sensor for the support airbag is placed inside the support airbag 6 to continuously monitor its internal pressure. The BMC chip can acquire the corresponding pressure values ​​for each. After the system is powered on, the BMC chip starts and begins monitoring the status of the support airbag and spacer airbag pressure sensors. When the pressure inside the spacer airbag 3 is 2.0 bar and the pressure inside the support airbag 6 is approximately 1.013 bar (the same as the external atmospheric pressure), the spacer airbag 3 is determined to be inflated and at its maximum volume. When the pressure inside the spacer airbag 3 is 1.013 bar (the same as the external atmospheric pressure) and the pressure inside the support airbag 6 is 2.0 bar, the spacer airbag 3 is determined to be compressed (flattened) and at its minimum volume. Other combinations indicate an error state, and a red warning light illuminates.

[0058] The aforementioned control system has alarm and protection logic, as detailed below:

[0059] Step 1: The BMC chip acquires the mode switch (air cooling / liquid cooling) signal. When it is high, it is determined to be a liquid cooling environment; when it is low, it is determined to be an air cooling environment.

[0060] Step 2: When the BMC chip determines that it is in air-cooling mode:

[0061] If the spacer airbag 3 is inflated at this time, the BMC chip will turn the air-cooling status indicator light red as a warning. Air-cooling aging tests are not supported at this time, and the BMC chip will not allow the system to power on.

[0062] If the spacer airbag 3 is in a flat state at this time, the BMC chip controls the air-cooling status indicator to turn green, and the server is working normally.

[0063] Step 3: When the BMC chip determines that it is in liquid cooling mode:

[0064] If the spacer airbag 3 is inflated at this time, the BMC chip controls the liquid cooling status indicator to turn green, and the server is working normally.

[0065] If the spacer airbag 3 is in a flat state at this time, the BMC chip controls the liquid cooling status indicator to turn red as an alarm, but this does not affect the server's startup and operation.

[0066] The above logic can effectively ensure the reliability of aging tests under air-cooled conditions and the stability of operation under immersion liquid cooling.

[0067] When the mode switch is in liquid cooling mode, the BMC chip controls the switching valve 10 to connect the inflation tube to the spacer airbag nozzle 8, and to the exhaust tube to the top support airbag nozzle 9, as shown below. Figure 4 As shown, the spacer airbag 3 is inflated through the inflation pipe and the top support airbag 6 is vented through the exhaust pipe, thus transforming the spacer airbag 3 into an inflated state. This ensures that it functions as a spacer during immersion liquid cooling operation, effectively reducing the amount of fluorinated liquid used inside the server chassis and significantly saving operating costs. When the mode switch is in air-cooling mode, the BMC chip controls the switching valve 10 to connect the exhaust pipe to the spacer airbag nozzle 8 and the inflation pipe to the top support airbag nozzle 9. Figure 5 As shown, multiple supporting airbags 6 are simultaneously inflated through the inflation tube, and the spacer airbag 3 is vented through the exhaust pipe, thereby transforming the spacer airbag 3 into a compressed and flat state. This ensures the reliability of aging tests on immersion liquid-cooled servers in an air-cooled environment, prevents the spacer airbag 3 from blocking the air duct, avoids disrupting the internal heat dissipation airflow of the server, and avoids heat dissipation failure.

[0068] This invention also discloses a testing method for an immersion liquid-cooled server, comprising the following steps:

[0069] Step 1: Set up the test environment; connect the air source device hose to the inflation pipe, and connect the two ports of the switching valve 10 to the spacer airbag nozzle 8 and the top support airbag nozzle 9 respectively, and connect the other two ports to the inflation pipe and the exhaust pipe respectively. Connect the air-cooled heat dissipation fixture to the server and install the power supply.

[0070] Step 2: Switch the mode switch on the chassis panel to air-cooling mode; when the BMC chip detects that the mode switch is in air-cooling mode, the air-cooling status indicator light will illuminate; adjust the switching valve 10 to connect the inflation port to the inner cavity of the top support airbag 6 and the exhaust pipe to the inner cavity of the placeholder airbag 3, so that the inflation of the top support airbag 6 and the exhaust of the placeholder airbag 3 are carried out simultaneously; the placeholder airbag 3 is compressed to a flat state; at this time, the placeholder airbag 3 is in a compressed and flat state, which will not block the airflow inside the server, will not disrupt the airflow direction inside the server, and will not affect the system heat dissipation;

[0071] Step 3: Power on the server and perform an aging test;

[0072] Step 4: After the aging test is completed, the server is shut down;

[0073] Step 5: Turn the mode switch on the control panel to liquid cooling mode; when the BMC chip detects that the mode switch is in liquid cooling mode, the liquid cooling status indicator light will illuminate; adjust the switching valve 10 so that the inflation port is connected to the inner cavity of the spacer airbag 3 and the exhaust pipe is connected to the inner cavity of the top support airbag 6, so that the spacer airbag 3 is inflated and the top support airbag 6 is deflated simultaneously; the spacer airbag 3 expands to its maximum volume; at this time, it has the function of a spacer block in an immersion liquid cooling environment;

[0074] Step 6: Remove the air-cooled heat dissipation fixture, inflation pipe, exhaust pipe and switching valve 10, and use the self-sealing structure on the spacer airbag nozzle 8 and the top support airbag nozzle 9 to automatically seal and prevent air leakage.

[0075] Step 7: Visual inspection, packaging and shipping.

[0076] The testing method for the aforementioned immersion liquid-cooled server also includes a space-occupying airbag alarm and protection method, which includes the following steps:

[0077] Step 1: The BMC chip acquires the mode switch signal. When it is high, it is determined to be a liquid cooling environment; when it is low, it is determined to be an air cooling environment.

[0078] Step 2: When the BMC chip determines that it is in air-cooling mode:

[0079] When the spacer airbag 3 is inflated, the air-cooling status indicator light is red and in a warning state; air-cooling is not supported at this time, and the BMC chip does not allow the system to power on.

[0080] When the spacer airbag 3 is in a compressed state, the air-cooling status indicator light is green, and the server is working normally;

[0081] Step 3: When the BMC chip determines that it is in liquid cooling mode:

[0082] When the spacer airbag 3 is inflated, the liquid cooling status indicator light is green, and the server is working normally.

[0083] When the spacer airbag 3 is in a compressed state, the liquid cooling status indicator light will be red as an alarm, but this will not affect the server's startup and operation.

[0084] This immersion liquid-cooled server, control system, and testing method, during aging tests in an air-cooled environment, involves inflating multiple top-support airbags 6 while simultaneously deflating the spacer airbags 3. This causes the top-support airbags 6 to expand, and the spacer airbags 3 are compressed upwards to a flattened state by the spacer airbag base plate 5. Since the volume change of the top-support airbags 6 during expansion is much smaller than the volume change of the spacer airbags 3 during compression, the spacer airbags 3 are effectively prevented from blocking the air duct, disrupting the internal heat dissipation airflow of the server, and causing heat dissipation failures. This ensures the reliability and accuracy of aging tests on the immersion liquid-cooled server in an air-cooled environment. When operating normally in an immersion liquid cooling environment, the spacer airbag 3 is inflated to its maximum volume by inflating the spacer airbag 3 while simultaneously deflating multiple support airbags 6. The spacer airbag 3 is then compressed downwards to a flattened state by the spacer airbag base plate 5. Since the volume change of the spacer airbag 3 during expansion is much greater than the volume change of the support airbags 6 during compression, it effectively occupies space within the server chassis, acting as a spacer block. This effectively reduces the amount of fluorinated liquid used inside the server chassis, significantly saving operating costs. The overall structure is simple, convenient, flexible, and practical. It eliminates the need for repeated disassembly and reassembly of the spacer block structure, effectively avoiding the problems of decreased production efficiency, increased product damage risk, and higher failure rates caused by repeated disassembly and reassembly.

[0085] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0086] The terms "upper," "lower," "outer," "inner," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0087] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An immersion liquid-cooled server, comprising a chassis cover (1), characterized in that, A spacer airbag top plate (2) is positioned and installed on the lower side of the top cover (1) of the chassis, and a spacer airbag (3) is connected to the lower side of the spacer airbag top plate (2); several top support airbag support plates (7) are also positioned and installed inside the server chassis; a top support airbag (6) is supported on the top support airbag support plate (7), and a spacer airbag bottom plate (5) is supported on the upper side of the top support airbag (6) and is fitted and connected to the lower side of the spacer airbag (3); several guide rods (4) are connected on the top plate (2), and the spacer airbag bottom plate (5) and the guide rods (4) slide and guide each other. During the aging test of this immersion liquid-cooled server in air-cooled mode, the top support airbags (6) are inflated by inflating multiple top support airbags (6) and simultaneously deflating the spacer airbags (3). The spacer airbags (3) are then compressed upwards to a flat state by the spacer airbag base plate (5). The volume change of the top support airbags (6) during expansion is much smaller than the volume change of the spacer airbags (3) during compression. During normal operation in immersion liquid-cooled mode, the spacer airbags (3) are inflated by inflating multiple top support airbags (6) and simultaneously deflating the multiple top support airbags (6). The spacer airbags (6) are then compressed downwards to a flat state by the spacer airbag base plate (5). The volume change of the spacer airbags (3) during expansion is much larger than the volume change of the top support airbags (6) during compression.

2. The immersion liquid-cooled server according to claim 1, characterized in that, The top support airbag support plate (7) is fixedly installed at the lower end of the guide rod (4).

3. The immersion liquid-cooled server according to claim 1, characterized in that, The spacer airbag (3) has a spacer airbag nozzle (8) on the side near the spacer airbag top plate (2), and the top support airbag (6) has a top support airbag nozzle (9) on the side near the top support airbag support plate (7).

4. The immersion liquid-cooled server according to claim 1, characterized in that, Both the spacer airbag (3) and the top support airbag (6) have an accordion-like structure.

5. The immersion liquid-cooled server according to claim 2, characterized in that, The top support airbag (6) has a through hole in the middle for the guide rod (4) to pass through.

6. The immersion liquid-cooled server according to claim 3, characterized in that, The spacer air nozzles (8) on several support airbags (6) are connected in parallel.

7. A control system for an immersion liquid-cooled server, characterized in that, The system includes a chassis top cover (1), a spacer airbag top plate (2) installed on the lower side of the chassis top cover (1), and a spacer airbag (3) connected to the lower side of the spacer airbag top plate (2); several top support airbag support plates (7) are also installed inside the server chassis; a top support airbag (6) is supported on the top support airbag support plate (7), and a spacer airbag bottom plate (5) is supported on the upper side of the top support airbag (6) and is fitted and connected to the lower side of the spacer airbag (3). It also includes a spacer airbag pressure sensor for detecting the air pressure inside the spacer airbag (3), a top support airbag pressure sensor for detecting the air pressure inside the top support airbag (6), a mode switch, a BMC chip, an air-cooled status indicator, a liquid-cooled status indicator, an inflation tube, an exhaust tube, and a switching valve (10). The switching valve (10) is used to switch the inflation and deflation states of the spacer airbag nozzle (8) and the top support airbag nozzle (9). The BMC chip is connected to the spacer airbag pressure sensor, the top support airbag pressure sensor, the mode switch, the air-cooled status indicator, the liquid-cooled status indicator, and the switching valve (10), respectively. During the aging test of this immersion liquid-cooled server in air-cooled mode, the top support airbags (6) are inflated by inflating multiple top support airbags (6) and simultaneously deflating the spacer airbags (3). The spacer airbags (3) are then compressed upwards to a flat state by the spacer airbag base plate (5). The volume change of the top support airbags (6) during expansion is much smaller than the volume change of the spacer airbags (3) during compression. During normal operation in immersion liquid-cooled mode, the spacer airbags (3) are inflated by inflating multiple top support airbags (6) and simultaneously deflating the multiple top support airbags (6). The spacer airbags (6) are then compressed downwards to a flat state by the spacer airbag base plate (5). The volume change of the spacer airbags (3) during expansion is much larger than the volume change of the top support airbags (6) during compression.

8. The control system for the immersion liquid-cooled server according to claim 7, characterized in that, When the mode switch is in liquid cooling mode, the BMC chip controls the switching valve (10) to connect the inflation pipe to the spacer airbag nozzle (8) and the exhaust pipe to the top support airbag nozzle (9); when the mode switch is in air cooling mode, the BMC chip controls the switching valve (10) to connect the exhaust pipe to the spacer airbag nozzle (8) and the inflation pipe to the top support airbag nozzle (9).

9. A test method for an immersion liquid-cooled server, characterized in that, The control system of the immersion liquid-cooled server as described in claim 8 includes the following steps: Step 1: Set up the test environment; connect the air source device hose to the server's air inlet pipe, connect the air-cooled heat dissipation fixture to the server, and install the power supply; Step 2: Toggle the mode switch to air-cooling mode; when the BMC chip detects that the mode switch is in air-cooling mode, it lights up the air-cooling status indicator; adjust the switching valve (10) so that the inflation port is connected to the inner cavity of the top support airbag (6) and the exhaust pipe is connected to the inner cavity of the spacer airbag (3), and the inflation of the top support airbag (6) and the exhaust of the spacer airbag (3) are performed simultaneously; the spacer airbag (3) is compressed to a flat state; Step 3: Power on the server and perform an aging test; Step 4: After the aging test is completed, the server is shut down; Step 5: Toggle the mode switch to liquid cooling mode; when the BMC chip detects that the mode switch is in liquid cooling mode, the liquid cooling status indicator light will be lit; adjust the switching valve (10) so that the inflation port is connected to the inner cavity of the spacer airbag (3) and the exhaust pipe is connected to the inner cavity of the top support airbag (6), and the spacer airbag (3) is inflated and the top support airbag (6) is deflated at the same time; the spacer airbag (3) expands to its maximum volume; Step 6: Remove the air-cooled heat dissipation fixture, inflation pipe, exhaust pipe and switching valve (10), and seal the spacer airbag nozzle (8) and the top support airbag nozzle (9). Step 7: Visual inspection, packaging and shipping.

10. The test method for an immersion liquid-cooled server according to claim 9, characterized in that, It also includes methods for alarming and protecting spaced-in airbags, which include the following steps: Step 1: The BMC chip acquires the mode switch signal. When it is high, it is determined to be in liquid cooling mode; when it is low, it is determined to be in air cooling mode. Step 2: When the BMC chip determines that it is in air-cooling mode: When the spacer airbag (3) is inflated, the air-cooling status indicator light is red and in a warning state; at this time, air-cooling is not supported and the BMC chip does not allow the system to start running. When the spacer airbag (3) is in a compressed state, the air-cooling status indicator light is green, and the server is working normally; Step 3: When the BMC chip determines that it is in liquid cooling mode: When the spacer airbag (3) is inflated, the liquid cooling status indicator light is green, and the server is working normally; When the spacer airbag (3) is in a compressed state, the liquid cooling status indicator light is red and in a warning state, but this does not affect the server's startup and operation.

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