CN114051356B - Negative pressure liquid cooling system - Google Patents
Negative pressure liquid cooling system Download PDFInfo
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- CN114051356B CN114051356B CN202111160609.1A CN202111160609A CN114051356B CN 114051356 B CN114051356 B CN 114051356B CN 202111160609 A CN202111160609 A CN 202111160609A CN 114051356 B CN114051356 B CN 114051356B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20272—Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20281—Thermal management, e.g. liquid flow control
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Abstract
Description
技术领域Technical field
本发明涉及芯片冷却技术领域,具体涉及一种负压液冷系统。The invention relates to the technical field of chip cooling, and in particular to a negative pressure liquid cooling system.
背景技术Background technique
近年来,随着电子元器件集成度的提高,芯片的功率越来越高,芯片的散热要求也越来越高,传统的风冷散热方式难以解决大功率、高热流密度芯片的散热问题。In recent years, with the improvement of the integration of electronic components, the power of chips has become higher and higher, and the heat dissipation requirements of chips have become higher and higher. The traditional air-cooling heat dissipation method is difficult to solve the heat dissipation problem of high-power, high heat flow density chips.
液冷散热方式因为可以解决大功率、高热流密度芯片的散热问题,在大功率电子设备冷却中应用越来越广泛。传统的液冷系统为正压液冷系统,即管路内的液体压力大于管路外的环境压力,当管路因腐蚀或其他原因穿孔时,管路内的液体会从穿孔处泄露到电子元器件上,从而导致电子元器件损坏。Because liquid cooling can solve the heat dissipation problem of high-power, high-heat-flux-density chips, it is increasingly used in cooling high-power electronic equipment. The traditional liquid cooling system is a positive pressure liquid cooling system, that is, the liquid pressure in the pipeline is greater than the ambient pressure outside the pipeline. When the pipeline is perforated due to corrosion or other reasons, the liquid in the pipeline will leak from the perforation to the electronics. components, causing damage to electronic components.
负压液冷系统由于液体的内部压力低于大气压,不会出现冷却液泄露的问题。现有的一种负压液冷系统及其控制方法,包括依次连接的热交换器、单向阀、冷却板和水箱,水箱的出口与热交换器的进口连通,冷却液在液泵的作用下在热交换器、冷却板和水箱之间循环,水箱还连接有真空泵,真空泵用于调节冷却板出口的压力。该负压液冷系统需要真空泵和水泵同时工作才能维持系统正常运行,对真空泵和水泵的可靠性要求均较高,系统的成本和控制难度也较高。In the negative pressure liquid cooling system, because the internal pressure of the liquid is lower than atmospheric pressure, there will be no problem of coolant leakage. An existing negative pressure liquid cooling system and its control method include a heat exchanger, a one-way valve, a cooling plate and a water tank connected in sequence. The outlet of the water tank is connected to the inlet of the heat exchanger, and the coolant acts on the liquid pump. It circulates between the heat exchanger, cooling plate and water tank. The water tank is also connected to a vacuum pump. The vacuum pump is used to adjust the pressure at the outlet of the cooling plate. This negative pressure liquid cooling system requires the vacuum pump and the water pump to work at the same time to maintain the normal operation of the system. The reliability requirements for the vacuum pump and the water pump are high, and the cost and control difficulty of the system are also high.
发明内容Contents of the invention
因此,本发明要解决的技术问题在于克服现有技术中的需要真空泵和水泵同时工作才能维持系统正常运行,系统的成本和控制难度较高的缺陷,从而提供一种成本和控制难度较低的负压液冷系统。Therefore, the technical problem to be solved by the present invention is to overcome the shortcomings in the prior art that the vacuum pump and the water pump need to work at the same time to maintain the normal operation of the system, and the cost and control difficulty of the system are high, thereby providing a low cost and control difficulty Negative pressure liquid cooling system.
为了解决上述问题,本发明提供了一种负压液冷系统,包括第一储液箱、第二储液箱、真空泵、热交换器和冷板,第一储液箱包括第一进气口、第一出气口、第一进液口和第一出液口;第二储液箱包括第二进气口、第二出气口、第二进液口和第二出液口;真空泵包括入气口和排气口,入气口与第一出气口和第二出气口均连通,排气口与第一进气口和第二进气口均连通;热交换器包括液体进口和液体出口,液体进口与第一出液口和第二出液口均连通;冷板包括入液口和排液口,入液口与液体出口连通,排液口与第一进液口和第二进液口均连通;其中,负压液冷系统具有:第一进气口进气,第二出气口出气,第一出液口出液,第二进液口进液的第一状态;及第二进气口进气,第一出气口出气,第二出液口出液,第一进液口进液的第二状态;负压液冷系统适于在第一状态及第二状态间循环切换。In order to solve the above problems, the present invention provides a negative pressure liquid cooling system, which includes a first liquid storage tank, a second liquid storage tank, a vacuum pump, a heat exchanger and a cold plate. The first liquid storage tank includes a first air inlet. , a first air outlet, a first liquid inlet and a first liquid outlet; the second liquid storage tank includes a second air inlet, a second air outlet, a second liquid inlet and a second liquid outlet; the vacuum pump includes an inlet The air inlet and the exhaust port are connected, the air inlet is connected to the first air outlet and the second air outlet, and the exhaust port is connected to both the first air inlet and the second air inlet; the heat exchanger includes a liquid inlet and a liquid outlet, the liquid The inlet is connected to both the first liquid outlet and the second liquid outlet; the cold plate includes a liquid inlet and a liquid outlet, the liquid inlet is connected to the liquid outlet, and the liquid outlet is connected to the first liquid inlet and the second liquid inlet. are all connected; wherein, the negative pressure liquid cooling system has: a first state in which air is taken in through the first air inlet, air is discharged through the second air outlet, liquid is discharged through the first liquid outlet, and liquid is introduced into the second liquid inlet; and The air inlet is in the air port, the first air outlet is out air, the second liquid outlet is out liquid, and the first liquid inlet is in the second state; the negative pressure liquid cooling system is suitable for cyclic switching between the first state and the second state.
本发明提供的负压液冷系统,还包括调节结构,设置在液体进口的上游管路上,适于将入液口处的液压调节至低于大气压。The negative pressure liquid cooling system provided by the present invention also includes an adjustment structure, which is provided on the upstream pipeline of the liquid inlet and is suitable for adjusting the hydraulic pressure at the liquid inlet to lower than atmospheric pressure.
本发明提供的负压液冷系统,调节结构包括压力计和电磁调节阀;压力计设置在液体出口与入液口之间的连接管路上,适于测量液压;电磁调节阀与压力计通信连接,适于根据压力计的测量结果调节电磁调节阀的开度。In the negative pressure liquid cooling system provided by the invention, the adjustment structure includes a pressure gauge and an electromagnetic regulating valve; the pressure gauge is arranged on the connecting pipeline between the liquid outlet and the liquid inlet, and is suitable for measuring hydraulic pressure; the electromagnetic regulating valve is communicated with the pressure gauge. , suitable for adjusting the opening of the solenoid regulating valve according to the measurement results of the pressure gauge.
本发明提供的负压液冷系统,排液口的下游管路上设有气泡检测结构,负压液冷系统适于在气泡检测结构检测到气泡时具有第三状态,第三状态中,第一出气口和第二出气口均出气,第一进液口和第二进液口均进液。In the negative pressure liquid cooling system provided by the present invention, a bubble detection structure is provided on the downstream pipeline of the liquid discharge port. The negative pressure liquid cooling system is adapted to have a third state when the bubble detection structure detects bubbles. In the third state, the first The air outlet and the second air outlet both discharge air, and the first liquid inlet and the second liquid inlet both receive liquid.
本发明提供的负压液冷系统,还包括电磁排空阀和排空管,排空管的一端与真空泵的排气口连通,另一端连通至大气;电磁排空阀设置在排空管上,并适于在负压液冷系统处于第三状态时打开。The negative pressure liquid cooling system provided by the present invention also includes an electromagnetic exhaust valve and an exhaust pipe. One end of the exhaust pipe is connected to the exhaust port of the vacuum pump, and the other end is connected to the atmosphere; the electromagnetic exhaust valve is arranged on the exhaust pipe. , and is suitable for opening when the negative pressure liquid cooling system is in the third state.
本发明提供的负压液冷系统,还包括第一切换结构、第二切换结构、第三切换结构和第四切换结构,第一切换结构设置在排液口的下游管路上,适于控制第一进液口和第二进液口的开闭;第二切换结构设置在液体进口的上游管路上,适于控制第一出液口和第二出液口的开闭;第三切换结构设置在排气口的下游管路上,适于控制第一进气口和第二进气口的开闭;第四切换结构设置在入气口的上游管路上,适于控制第一出气口和第二出气口的开闭。The negative pressure liquid cooling system provided by the present invention also includes a first switching structure, a second switching structure, a third switching structure and a fourth switching structure. The first switching structure is arranged on the pipeline downstream of the liquid discharge port and is suitable for controlling the third switching structure. The opening and closing of the first liquid inlet and the second liquid inlet; the second switching structure is provided on the upstream pipeline of the liquid inlet, and is suitable for controlling the opening and closing of the first liquid outlet and the second liquid outlet; and the third switching structure is provided The pipeline downstream of the exhaust port is suitable for controlling the opening and closing of the first air inlet and the second air inlet; the fourth switching structure is provided on the pipeline upstream of the air inlet and is suitable for controlling the opening and closing of the first air outlet and the second air inlet. The opening and closing of the air outlet.
本发明提供的负压液冷系统,第一切换结构包括第一电磁阀和第二电磁阀,第一电磁阀设置在排液口与第一进液口的连接管路上;第二电磁阀设置在排液口与第二进液口的连接管路上。In the negative pressure liquid cooling system provided by the present invention, the first switching structure includes a first solenoid valve and a second solenoid valve. The first solenoid valve is provided on the connecting pipeline between the liquid discharge port and the first liquid inlet; the second solenoid valve is provided On the connecting pipeline between the drain port and the second liquid inlet.
本发明提供的负压液冷系统,第二切换结构包括第三电磁阀和第四电磁阀,第三电磁阀设置在液体进口与第一出液口的连接管路上;第四电磁阀设置在液体进口与第二出液口的连接管路上。In the negative pressure liquid cooling system provided by the present invention, the second switching structure includes a third solenoid valve and a fourth solenoid valve. The third solenoid valve is arranged on the connecting pipeline between the liquid inlet and the first liquid outlet; the fourth solenoid valve is arranged on On the connecting pipeline between the liquid inlet and the second liquid outlet.
本发明提供的负压液冷系统,第三切换结构包括第五电磁阀和第六电磁阀,第五电磁阀设置在排气口与第一进气口的连接管路上;第六电磁阀设置在排气口与第二进气口的连接管路上。In the negative pressure liquid cooling system provided by the present invention, the third switching structure includes a fifth solenoid valve and a sixth solenoid valve. The fifth solenoid valve is provided on the connecting pipeline between the exhaust port and the first air inlet; the sixth solenoid valve is provided On the connecting pipe between the exhaust port and the second air inlet.
本发明提供的负压液冷系统,第四切换结构包括第七电磁阀和第八电磁阀;第七电磁阀设置在入气口与第一出气口的连接管路上;第八电磁阀设置在入气口与第二出气口的连接管路上。In the negative pressure liquid cooling system provided by the present invention, the fourth switching structure includes a seventh solenoid valve and an eighth solenoid valve; the seventh solenoid valve is disposed on the connecting pipeline between the air inlet and the first air outlet; and the eighth solenoid valve is disposed on the inlet. On the connecting pipeline between the air port and the second air outlet.
本发明具有以下优点:The invention has the following advantages:
1.本发明提供的负压液冷系统,包括第一储液箱、第二储液箱、真空泵、热交换器和冷板,在真空泵的作用下,第一储液箱和第二储液箱交替在低压和高压之间转换,为冷却液在负压液冷系统中的循环提供动力,无需通过水泵就可实现冷却液的流动循环,减少了水泵等零部件,降低了成本,也降低了对负压液冷系统的控制难度;同时,本发明提供的负压液冷系统中,真空泵既为冷却液提供负压,又可在负压液冷系统中为冷却液提供动力,且无需对真空泵结构和控制进行改造就可实现上述功能。1. The negative pressure liquid cooling system provided by the present invention includes a first liquid storage tank, a second liquid storage tank, a vacuum pump, a heat exchanger and a cold plate. Under the action of the vacuum pump, the first liquid storage tank and the second liquid storage tank The tank alternately switches between low pressure and high pressure to provide power for the circulation of coolant in the negative pressure liquid cooling system. The flow circulation of the coolant can be realized without a water pump, which reduces parts such as water pumps, reduces costs, and reduces This reduces the difficulty of controlling the negative pressure liquid cooling system; at the same time, in the negative pressure liquid cooling system provided by the present invention, the vacuum pump not only provides negative pressure for the cooling liquid, but also provides power for the cooling liquid in the negative pressure liquid cooling system, and does not require The above functions can be achieved by modifying the vacuum pump structure and control.
附图说明Description of the drawings
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案,下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施方式,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。In order to more clearly explain the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description The drawings illustrate some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.
图1示出了本发明的负压液冷系统处于第一状态时的示意图;Figure 1 shows a schematic diagram of the negative pressure liquid cooling system of the present invention when it is in a first state;
图2示出了本发明的负压液冷系统处于第二状态时的示意图;Figure 2 shows a schematic diagram of the negative pressure liquid cooling system of the present invention in the second state;
图3示出了本发明的负压液冷系统处于第三状态时的示意图。Figure 3 shows a schematic diagram of the negative pressure liquid cooling system of the present invention when it is in a third state.
附图标记说明:Explanation of reference symbols:
1、第一储液箱;101、第一进气口;102、第一出气口;103、第一进液口;104、第一出液口;2、第二储液箱;201、第二进气口;202、第二出气口;203、第二进液口;204、第二出液口;3、真空泵;301、入气口;302、排气口;4、热交换器;401、液体进口;402、液体出口;5、冷板;501、入液口;502、排液口;6、调节结构;601、压力计;602、电磁调节阀;7、气泡检测结构;8、电磁排空阀;9、排空管;10、第一电磁阀;11、第二电磁阀;12、第三电磁阀;13、第四电磁阀;14、第五电磁阀;15、第六电磁阀;16、第七电磁阀;17、第八电磁阀;18、流量计。1. The first liquid storage tank; 101. The first air inlet; 102. The first air outlet; 103. The first liquid inlet; 104. The first liquid outlet; 2. The second liquid storage tank; 201. Two air inlets; 202, second air outlet; 203, second liquid inlet; 204, second liquid outlet; 3, vacuum pump; 301, air inlet; 302, exhaust port; 4, heat exchanger; 401 , liquid inlet; 402, liquid outlet; 5, cold plate; 501, liquid inlet; 502, liquid outlet; 6, regulating structure; 601, pressure gauge; 602, electromagnetic regulating valve; 7, bubble detection structure; 8. Solenoid drain valve; 9, drain pipe; 10, first solenoid valve; 11, second solenoid valve; 12, third solenoid valve; 13, fourth solenoid valve; 14, fifth solenoid valve; 15, sixth Solenoid valve; 16. Seventh solenoid valve; 17. Eighth solenoid valve; 18. Flow meter.
具体实施方式Detailed ways
下面将结合附图对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
在本发明的描述中,需要说明的是,术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。此外,术语“第一”、“第二”、“第三”仅用于描述目的,而不能理解为指示或暗示相对重要性。In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations of the invention. Furthermore, the terms “first”, “second” and “third” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
此外,下面所描述的本发明不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
如图1至图2所示,本实施例中公开了一种负压液冷系统,包括第一储液箱1、第二储液箱2、真空泵3、热交换器4、冷板5和控制器在附图中未示出,第一储液箱1包括第一进气口101、第一出气口102、第一进液口103和第一出液口104;第二储液箱2包括第二进气口201、第二出气口202、第二进液口203和第二出液口204;真空泵3包括入气口301和排气口302,入气口301与第一出气口102和第二出气口202均连通,排气口302与第一进气口101和第二进气口201均连通;热交换器4包括液体进口401和液体出口402,液体进口401与第一出液口104和第二出液口204均连通;冷板5包括入液口501和排液口502,入液口501与液体出口402连通,排液口502与第一进液口103和第二进液口203均连通;其中,负压液冷系统具有:第一进气口101进气,第二出气口202出气,第一出液口104出液,第二进液口203进液的第一状态;及第二进气口201进气,第一出气口102出气,第二出液口204出液,第一进液口103进液的第二状态;负压液冷系统适于在第一状态及第二状态间循环切换。本实施例的负压液冷系统还包括流量计18,设置在液体进口的上游管路上。As shown in Figures 1 to 2, this embodiment discloses a negative pressure liquid cooling system, including a first liquid storage tank 1, a second liquid storage tank 2, a vacuum pump 3, a heat exchanger 4, a cold plate 5 and The controller is not shown in the drawings. The first liquid storage tank 1 includes a first air inlet 101, a first air outlet 102, a first liquid inlet 103 and a first liquid outlet 104; the second liquid storage tank 2 It includes a second air inlet 201, a second air outlet 202, a second liquid inlet 203 and a second liquid outlet 204; the vacuum pump 3 includes an air inlet 301 and an exhaust port 302, and the air inlet 301 and the first air outlet 102 and The second air outlets 202 are all connected, and the exhaust outlet 302 is connected to both the first air inlet 101 and the second air inlet 201; the heat exchanger 4 includes a liquid inlet 401 and a liquid outlet 402, and the liquid inlet 401 is connected to the first liquid outlet. The inlet 104 and the second liquid outlet 204 are both connected; the cold plate 5 includes a liquid inlet 501 and a liquid outlet 502. The liquid inlet 501 is connected with the liquid outlet 402, and the liquid outlet 502 is connected with the first liquid inlet 103 and the second liquid outlet 402. The liquid inlets 203 are all connected; among them, the negative pressure liquid cooling system has: a first air inlet 101 for air inlet, a second air outlet 202 for air outlet, the first liquid outlet 104 for liquid outlet, and the second liquid inlet 203 for liquid inlet. a first state; and a second state in which air is taken in through the second air inlet 201, air is discharged through the first air outlet 102, liquid is discharged through the second liquid outlet 204, and liquid is introduced into the first liquid inlet 103; the negative pressure liquid cooling system is suitable for Switch cyclically between the first state and the second state. The negative pressure liquid cooling system of this embodiment also includes a flow meter 18, which is provided on the upstream pipeline of the liquid inlet.
本实施例提供的负压液冷系统,包括第一储液箱1、第二储液箱2、真空泵3、热交换器4和冷板5,在真空泵3的作用下,第一储液箱1和第二储液箱2交替在低压和高压之间转换,为冷却液在负压液冷系统中的循环提供动力,无需通过水泵就可实现冷却液的流动循环,减少了水泵等零部件,降低了成本,也降低了对负压液冷系统的控制难度;同时,本发明提供的负压液冷系统中,真空泵3既为冷却液提供负压,又可在负压液冷系统中为冷却液提供动力,且无需对真空泵3结构和控制进行改造就可实现上述功能。第一储液箱1和第二储液箱2通过一个真空泵3调节冷却液的压力,冷却液的压力低于外部环境大气压,冷却液处于负压状态,既不会发生冷却液泄露的问题,还可解决大功率、高热流密度芯片的散热问题。The negative pressure liquid cooling system provided by this embodiment includes a first liquid storage tank 1, a second liquid storage tank 2, a vacuum pump 3, a heat exchanger 4 and a cold plate 5. Under the action of the vacuum pump 3, the first liquid storage tank 1 and the second liquid storage tank 2 alternately switch between low pressure and high pressure to provide power for the circulation of coolant in the negative pressure liquid cooling system. The flow circulation of the coolant can be realized without a water pump, reducing the need for water pumps and other components. , reduces the cost, and also reduces the difficulty of controlling the negative pressure liquid cooling system; at the same time, in the negative pressure liquid cooling system provided by the present invention, the vacuum pump 3 not only provides negative pressure for the cooling liquid, but also can be used in the negative pressure liquid cooling system. Provides power for the coolant, and can realize the above functions without modifying the structure and control of the vacuum pump 3. The first liquid storage tank 1 and the second liquid storage tank 2 adjust the pressure of the coolant through a vacuum pump 3. The pressure of the coolant is lower than the atmospheric pressure of the external environment, and the coolant is in a negative pressure state, so there will be no problem of coolant leakage. It can also solve the heat dissipation problem of high-power, high-heat-flux-density chips.
具体地实施方式中,本实施例中的负压液冷系统还包括液位检测结构,用于检测第一储液箱1和第二储液箱2内的液位。当第二储液箱2内的液位达到液位阈值时,负压液冷系统从第一状态切换至第二状态;当第一储液箱1内的液位达到液位阈值时,负压液冷系统从第二状态切换至第一状态。冷却液可为去离子水。In a specific implementation, the negative pressure liquid cooling system in this embodiment also includes a liquid level detection structure for detecting the liquid levels in the first liquid storage tank 1 and the second liquid storage tank 2 . When the liquid level in the second liquid storage tank 2 reaches the liquid level threshold, the negative pressure liquid cooling system switches from the first state to the second state; when the liquid level in the first liquid storage tank 1 reaches the liquid level threshold, the negative pressure liquid cooling system switches to the second state. The hydraulic cooling system switches from the second state to the first state. The coolant can be deionized water.
优选地实施方式中,第一进气口101和第一出气口102均设置在第一储液箱1的顶部,第一进液口103和第一出液口104均设置在第一储液箱1的底部,便于冷却液的排出,且防止冷却液通过第一进气口101和第一出气口102溢出。In the preferred embodiment, the first air inlet 101 and the first air outlet 102 are both arranged on the top of the first liquid storage tank 1, and the first liquid inlet 103 and the first liquid outlet 104 are both arranged on the first liquid storage tank 1. The bottom of the box 1 facilitates the discharge of cooling liquid and prevents the cooling liquid from overflowing through the first air inlet 101 and the first air outlet 102 .
具体地实施方式中,真空泵3为水环真空泵3。优选地,真空泵3可通过PID调节转速,通过控制转速以控制部件的运行状态,控制结果精确,可防止电压调节时低压难以启动真空泵3的问题。In a specific embodiment, the vacuum pump 3 is a water ring vacuum pump 3 . Preferably, the rotation speed of the vacuum pump 3 can be adjusted through PID. By controlling the rotation speed to control the operating status of the components, the control results are accurate and can prevent the problem of difficulty in starting the vacuum pump 3 due to low voltage during voltage adjustment.
具体地实施方式中,热交换器4为采用风冷散热方式的冷凝器。冷板5可具有至少一个,具有两个以上的冷板5时,两个以上的冷板5串联或并联,可对大规模电子器件或多个电子器件进行同步散热。In a specific embodiment, the heat exchanger 4 is a condenser using an air-cooled heat dissipation method. There may be at least one cold plate 5 . When there are more than two cold plates 5 , the two or more cold plates 5 may be connected in series or in parallel to synchronously dissipate heat for large-scale electronic devices or multiple electronic devices.
本实施例的负压液冷系统,还包括调节结构6,设置在液体进口401的上游管路上,适于将入液口501处的液压调节至低于大气压。调节结构6与真空泵3配合,将入液口501的液压进行调节,保证冷板5处不会有冷却液溢出,防止电子器件受到溢出的冷却液的损害。The negative pressure liquid cooling system of this embodiment also includes an adjustment structure 6, which is provided on the upstream pipeline of the liquid inlet 401 and is suitable for adjusting the hydraulic pressure at the liquid inlet 501 to below atmospheric pressure. The adjusting structure 6 cooperates with the vacuum pump 3 to adjust the hydraulic pressure of the liquid inlet 501 to ensure that there will be no overflow of coolant at the cold plate 5 and to prevent electronic devices from being damaged by the overflowed coolant.
本实施例中,调节结构6包括压力计601和电磁调节阀602,压力计601设置在液体出口402与入液口501之间的连接管路上,适于测量液压;电磁调节阀602与压力计601通信连接,适于根据压力计601的测量结果调节电磁调节阀602的开度。当压力计601测量到的液压大于大气压时,调小电磁调节阀602的开度,增加系统流阻,使进入冷板5的冷却液的液压保持在低于大气压的负压状态。通信连接包括通过连接导线有线连接,和通过2G、3G、4G、5G和WIFI等网络连接。压力计601和电磁调节阀602均与控制器通信连接。In this embodiment, the regulating structure 6 includes a pressure gauge 601 and an electromagnetic regulating valve 602. The pressure gauge 601 is provided on the connecting pipeline between the liquid outlet 402 and the liquid inlet 501 and is suitable for measuring hydraulic pressure; the electromagnetic regulating valve 602 and the pressure gauge 601 communication connection, suitable for adjusting the opening of the electromagnetic regulating valve 602 according to the measurement results of the pressure gauge 601. When the hydraulic pressure measured by the pressure gauge 601 is greater than the atmospheric pressure, the opening of the electromagnetic regulating valve 602 is reduced to increase the system flow resistance, so that the hydraulic pressure of the coolant entering the cold plate 5 is maintained at a negative pressure lower than the atmospheric pressure. Communication connections include wired connections through connecting wires, and network connections through 2G, 3G, 4G, 5G and WIFI. The pressure gauge 601 and the electromagnetic regulating valve 602 are both communicatively connected with the controller.
如图3所示,本实施例中,排液口502的下游管路上设有气泡检测结构7,负压液冷系统适于在气泡检测结构7检测到气泡时具有第三状态,第三状态中,第一出气口102和第二出气口202均出气,第一进液口103和第二进液口203均进液。气泡检测结构7检测到气泡时,说明负压液冷系统中有破损,此时应停机,并将冷却液回收至第一储液箱1和第二储液箱2中,防止冷却液泄露损伤电子器件,再检查破损处并进行修复。优选地实施方式中,负压液冷系统处于第三状态时,第一出液口104也可向第一储液箱1内进液,第二出液口204也可向第二储液箱2内进液,增加冷却液的回收速度。负压液冷系统在更换冷却液或运输时也可先进行第三状态将冷却液进行回收。气泡检测结构7与控制器通信连接。As shown in Figure 3, in this embodiment, a bubble detection structure 7 is provided on the downstream pipeline of the liquid discharge port 502. The negative pressure liquid cooling system is adapted to have a third state when the bubble detection structure 7 detects bubbles. The third state , the first air outlet 102 and the second air outlet 202 both outlet air, and the first liquid inlet 103 and the second liquid inlet 203 both enter liquid. When the bubble detection structure 7 detects bubbles, it indicates that there is damage in the negative pressure liquid cooling system. At this time, the machine should be shut down and the coolant should be recovered into the first liquid storage tank 1 and the second liquid storage tank 2 to prevent coolant leakage and damage. Electronic devices, then check for damage and repair them. In the preferred embodiment, when the negative pressure liquid cooling system is in the third state, the first liquid outlet 104 can also feed liquid into the first liquid storage tank 1, and the second liquid outlet 204 can also feed liquid into the second liquid storage tank 1. 2, liquid is fed in to increase the recovery speed of coolant. The negative pressure liquid cooling system can also enter the third state to recover the coolant when replacing coolant or transporting. The bubble detection structure 7 is communicatively connected with the controller.
本实施例的负压液冷系统,还包括电磁排空阀8和排空管9,排空管9的一端与真空泵3的排气口302连通,另一端连通至大气;电磁排空阀8设置在排空管9上,并适于在负压液冷系统处于第三状态时打开,将第一储液箱1和第二储液箱2内的气体排出至外部环境中。电磁排空阀8与控制器通信连接。The negative pressure liquid cooling system of this embodiment also includes an electromagnetic exhaust valve 8 and an exhaust pipe 9. One end of the exhaust pipe 9 is connected to the exhaust port 302 of the vacuum pump 3, and the other end is connected to the atmosphere; the electromagnetic exhaust valve 8 It is provided on the exhaust pipe 9 and is adapted to be opened when the negative pressure liquid cooling system is in the third state to discharge the gas in the first liquid storage tank 1 and the second liquid storage tank 2 to the external environment. The electromagnetic exhaust valve 8 is communicatively connected with the controller.
优选地实施方式中,第一储液箱1的容积和第二储液箱2的容积的加和,大于负压液冷系统中的冷却液的含量。In a preferred embodiment, the sum of the volumes of the first liquid storage tank 1 and the second liquid storage tank 2 is greater than the content of the coolant in the negative pressure liquid cooling system.
如图1至图3所示,本实施例的负压液冷系统,还包括第一切换结构、第二切换结构、第三切换结构和第四切换结构,第一切换结构设置在排液口502的下游管路上,适于控制第一进液口103和第二进液口203的开闭;第二切换结构设置在液体进口401的上游管路上,适于控制第一出液口104和第二出液口204的开闭;第三切换结构设置在排气口302的下游管路上,适于控制第一进气口101和第二进气口201的开闭;第四切换结构设置在入气口301的上游管路上,适于控制第一出气口102和第二出气口202的开闭。As shown in Figures 1 to 3, the negative pressure liquid cooling system of this embodiment also includes a first switching structure, a second switching structure, a third switching structure and a fourth switching structure. The first switching structure is provided at the drain port. The downstream pipeline of 502 is suitable for controlling the opening and closing of the first liquid inlet 103 and the second liquid inlet 203; the second switching structure is provided on the upstream pipeline of the liquid inlet 401, and is suitable for controlling the first liquid outlet 104 and the second liquid inlet 203. The opening and closing of the second liquid outlet 204; the third switching structure is provided on the downstream pipeline of the exhaust port 302, suitable for controlling the opening and closing of the first air inlet 101 and the second air inlet 201; the fourth switching structure is provided On the upstream pipeline of the air inlet 301, it is suitable to control the opening and closing of the first air outlet 102 and the second air outlet 202.
本实施例中,第一切换结构包括第一电磁阀10和第二电磁阀11,第一电磁阀10设置在排液口502与第一进液口103的连接管路上;第二电磁阀11设置在排液口502与第二进液口203的连接管路上。第一电磁阀10和第二电磁阀11均与控制器通信连接。In this embodiment, the first switching structure includes a first solenoid valve 10 and a second solenoid valve 11. The first solenoid valve 10 is provided on the connecting pipeline between the liquid discharge port 502 and the first liquid inlet 103; the second solenoid valve 11 It is provided on the connecting pipeline between the liquid discharge port 502 and the second liquid inlet 203 . Both the first solenoid valve 10 and the second solenoid valve 11 are communicatively connected with the controller.
作为可变换的实施方式,也可以为,第一切换结构为电磁三通阀,分别与排液口502、第一进液口103和第二进液口203连通。As an alternative embodiment, the first switching structure may be an electromagnetic three-way valve, which is connected to the liquid discharge port 502, the first liquid inlet 103, and the second liquid inlet 203 respectively.
本实施例中,第二切换结构包括第三电磁阀12和第四电磁阀13,第三电磁阀12设置在液体进口401与第一出液口104的连接管路上;第四电磁阀13设置在液体进口401与第二出液口204的连接管路上。第三电磁阀12和第四电磁阀13均与控制器通信连接。In this embodiment, the second switching structure includes a third solenoid valve 12 and a fourth solenoid valve 13. The third solenoid valve 12 is provided on the connecting pipeline between the liquid inlet 401 and the first liquid outlet 104; the fourth solenoid valve 13 is provided On the connecting pipeline between the liquid inlet 401 and the second liquid outlet 204. The third solenoid valve 12 and the fourth solenoid valve 13 are both communicatively connected with the controller.
作为可变换的实施方式,也可以为,第二切换结构为电磁三通阀,分别与液体进口401、第一出液口104和第二出液口204连通。As an alternative implementation, the second switching structure may be an electromagnetic three-way valve, which is connected to the liquid inlet 401, the first liquid outlet 104, and the second liquid outlet 204 respectively.
本实施例中,第三切换结构包括第五电磁阀14和第六电磁阀15,第五电磁阀14设置在排气口302与第一进气口101的连接管路上;第六电磁阀15设置在排气口302与第二进气口201的连接管路上。第五电磁阀14和第六电磁阀15均与控制器通信连接。In this embodiment, the third switching structure includes a fifth solenoid valve 14 and a sixth solenoid valve 15. The fifth solenoid valve 14 is provided on the connecting pipeline between the exhaust port 302 and the first air inlet 101; the sixth solenoid valve 15 It is provided on the connecting pipeline between the exhaust port 302 and the second air inlet 201. The fifth solenoid valve 14 and the sixth solenoid valve 15 are both communicatively connected with the controller.
作为可变换的实施方式,也可以为,第三切换结构为电磁三通阀,分别与排气口302、第一进气口101和第二进气口201连通。As an alternative embodiment, the third switching structure may be an electromagnetic three-way valve, which is connected to the exhaust port 302, the first air inlet 101, and the second air inlet 201 respectively.
本实施例中,第四切换结构包括第七电磁阀16和第八电磁阀17;第七电磁阀16设置在入气口301与第一出气口102的连接管路上;第八电磁阀17设置在入气口301与第二出气口202的连接管路上。In this embodiment, the fourth switching structure includes a seventh solenoid valve 16 and an eighth solenoid valve 17; the seventh solenoid valve 16 is disposed on the connecting pipeline between the air inlet 301 and the first air outlet 102; the eighth solenoid valve 17 is disposed on On the connecting pipeline between the air inlet 301 and the second air outlet 202.
作为可变换的实施方式,也可以为,第四切换结构为电磁三通阀,分别与入气口301、第一出气口102和第二出气口202连通。As an alternative implementation, the fourth switching structure may be an electromagnetic three-way valve, which is connected to the air inlet 301, the first air outlet 102, and the second air outlet 202 respectively.
优选地实施方式中,负压液冷系统的所有连接管路均为可承受负压的透明管路,可直接观察到管路内部的气泡。In a preferred embodiment, all connecting pipelines of the negative pressure liquid cooling system are transparent pipelines that can withstand negative pressure, and bubbles inside the pipelines can be directly observed.
本实施例的负压液冷系统的运行过程包括第一状态、第二状态和第三状态。第一状态中,第一储液箱1内的冷却液达到液位阈值时,第二电磁阀11、第三电磁阀12、第五电磁阀14、第八电磁阀17和电磁调节阀602打开,真空泵3启动,第一进气口101进气,第二出气口202出气,第一出液口104出液,冷却液从第一储液箱1内经过电磁调节阀602、热交换器4和冷板5后通过第二进液口203进入第二储液箱2,直到第二储液箱2内的冷却液达到液位阈值时切换至第二状态;第二状态中,第二储液箱2内的冷却液达到液位阈值时,第一电磁阀10、第四电磁阀13、第七电磁阀16、第六电磁阀15和电磁调节阀602打开,真空泵3启动,第二进气口201进气,第一出气口102出气,第二出液口204出液,冷却液从第二储液箱2内经过电磁调节阀602、热交换器4和冷板5后通过第一进液口103进入第一储液箱1,直到第一储液箱1内的冷却液达到液位阈值时切换至第一状态。第三状态中,第一电磁阀10、第二电磁阀11、第三电磁阀12、第四电磁阀13、第七电磁阀16、第八电磁阀17、电磁调节阀602和电磁排空阀8均打开,真空泵3启动,第一出气口102和第二出气口202出气,气体通过排气口302排至外部环境中;冷却液部分通过第一进液口103和第一出液口104回收至第一储液箱1内,部分通过第二进液口203和第二出液口204回收至第二储液箱2内,若第一储液箱1和/或第二储液箱2达到液位阈值,则关闭相应的电磁阀。The operation process of the negative pressure liquid cooling system in this embodiment includes a first state, a second state and a third state. In the first state, when the coolant in the first liquid storage tank 1 reaches the liquid level threshold, the second solenoid valve 11, the third solenoid valve 12, the fifth solenoid valve 14, the eighth solenoid valve 17 and the solenoid regulating valve 602 are opened. , the vacuum pump 3 is started, air is taken in from the first air inlet 101, air is discharged from the second air outlet 202, liquid is discharged from the first liquid outlet 104, and the coolant passes from the first liquid storage tank 1 through the electromagnetic regulating valve 602 and the heat exchanger 4 After cooling with the cold plate 5, it enters the second liquid storage tank 2 through the second liquid inlet 203, until the cooling liquid in the second liquid storage tank 2 reaches the liquid level threshold and switches to the second state; in the second state, the second liquid storage tank 2 When the coolant in the liquid tank 2 reaches the liquid level threshold, the first solenoid valve 10, the fourth solenoid valve 13, the seventh solenoid valve 16, the sixth solenoid valve 15 and the solenoid regulating valve 602 are opened, the vacuum pump 3 is started, and the second inlet valve is opened. Air enters through the air port 201, air comes out of the first air outlet 102, and liquid comes out of the second liquid outlet 204. The coolant passes from the second liquid storage tank 2 through the electromagnetic regulating valve 602, the heat exchanger 4 and the cold plate 5 and then passes through the first The liquid inlet 103 enters the first liquid storage tank 1 until the cooling liquid in the first liquid storage tank 1 reaches the liquid level threshold and switches to the first state. In the third state, the first solenoid valve 10, the second solenoid valve 11, the third solenoid valve 12, the fourth solenoid valve 13, the seventh solenoid valve 16, the eighth solenoid valve 17, the solenoid regulating valve 602 and the solenoid exhaust valve 8 are all opened, the vacuum pump 3 is started, the first air outlet 102 and the second air outlet 202 discharge the gas, and the gas is discharged to the external environment through the exhaust port 302; the coolant part passes through the first liquid inlet 103 and the first liquid outlet 104 It is recovered into the first liquid storage tank 1, and part of it is recovered into the second liquid storage tank 2 through the second liquid inlet 203 and the second liquid outlet 204. If the first liquid storage tank 1 and/or the second liquid storage tank 2 When the liquid level threshold is reached, the corresponding solenoid valve is closed.
显然,上述实施例仅仅是为清楚地说明所作的举例,而并非对实施方式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本发明创造的保护范围之中。Obviously, the above-mentioned embodiments are only examples for clear explanation and are not intended to limit the implementation. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. An exhaustive list of all implementations is neither necessary nor possible. The obvious changes or modifications derived therefrom are still within the protection scope of the present invention.
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