Single-phase immersed cooling device and system

Abstract

The utility model discloses a single-phase immersion cooling device and a single-phase immersion liquid cooling heat exchange system, which are applied to the technical field of heat dissipation of electronic information equipment, and comprise an immersion cavity, a heat exchanger and a flow pulsation valve, the interior of the immersion cavity communicates with the heat exchanger, and the immersion cavity is used for containing cooling liquid and objects to be cooled. The flow pulsation valve is located in the immersion cavity and used for disturbing cooling liquid near the object to be cooled. During working, cooling liquid near a to-be-cooled object is disturbed through the flow pulsation valve, a boundary layer of flowing heat transfer is destroyed, and therefore heat transfer is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation of electronic information equipment, in particular to a single-phase immersion cooling device and a single-phase immersion cooling system. Background Art

[0002] Single-phase immersion cooling devices can be divided into fluorinated liquid immersion cooling devices and oil immersion cooling devices according to the type of coolant. Due to environmental protection and environmental pollution, fluorinated liquid immersion cooling devices are less used in the industry. The current industry mainly uses oil immersion cooling devices. In the process of realizing the utility model, the inventor found that there are at least the following problems in the prior art: due to the high viscosity of oil coolant, the heat dissipation effect of oil immersion cooling is poor.

[0003] Therefore, how to provide a single-phase immersion cooling device with higher cooling efficiency is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of the utility model is to provide a single-phase immersion cooling device with high cooling efficiency; another purpose of the utility model is to provide a single-phase immersion cooling system with high cooling efficiency.

[0005] In order to solve the above technical problems, the utility model provides a single-phase immersion cooling device, including an immersion chamber, a heat exchanger and a flow pulsation valve;

[0006] The interior of the immersion chamber is in communication with the heat exchanger, and the immersion chamber is used to contain cooling liquid and objects to be cooled;

[0007] The flow pulsation valve is located in the immersion chamber and is used to disturb the cooling liquid near the object to be cooled.

[0008] Optionally, in the channel interconnected between the immersion chamber and the heat exchanger, a channel for injecting the coolant into the immersion chamber is connected to the lower part of the immersion chamber, and a channel for extracting the coolant from the immersion chamber is connected to the upper part of the immersion chamber.

[0009] Optionally, a plurality of placement areas are provided in the immersion chamber, and the objects to be cooled are fixed in corresponding placement areas.

[0010] Optionally, a plurality of the flow pulsation valves are arranged in the immersion chamber, and at least one flow pulsation valve is correspondingly arranged in one placement area.

[0011] Optionally, it further includes a diverter plate located in the immersion chamber, wherein the diverter plate is located below the placement area.

[0012] Optionally, the diverter plate is provided with an opening corresponding to the placement area.

[0013] Optionally, the flow pulsation valve is arranged at the corresponding opening.

[0014] Optionally, the flow pulsation valve is communicatively connected to a controller.

[0015] Optionally, the coolant is an oil coolant.

[0016] The utility model also provides a single-phase immersion cooling system, comprising a single-phase immersion cooling device as described in any one of the above items.

[0017] The utility model provides a single-phase immersion cooling device, comprising an immersion chamber, a heat exchanger and a flow pulsation valve; the interior of the immersion chamber is interconnected with the heat exchanger, and the immersion chamber is used to contain coolant and an object to be cooled; the flow pulsation valve is located in the immersion chamber and is used to disturb the coolant near the object to be cooled.

[0018] During operation, the coolant near the object to be cooled is disturbed by the flow pulsation valve, destroying the boundary layer of flow heat transfer, thereby enhancing heat transfer.

[0019] The utility model also provides a single-phase immersion cooling system, which also has the above-mentioned beneficial effects and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a single-phase immersion cooling device provided by an embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of a flow pulsation valve;

[0023] Figure 3 A schematic structural diagram of a specific single-phase immersion cooling device provided in an embodiment of the utility model.

[0024] In the figure: 1. Immersion chamber, 2. Heat exchanger, 3. Flow pulsation valve, 4. Placement area, 5. Object to be cooled, 6. Pump, 7. Diverter plate. DETAILED DESCRIPTION

[0025] The core of the utility model is to provide a single-phase immersion cooling device. In the prior art, for coolants, especially oily coolants, the overall flow rate of the coolant in the immersion chamber is low due to the high viscosity of the working fluid, and a thicker thermal boundary layer will be formed on the surface of the object to be cooled, resulting in poor heat dissipation effect.

[0026] The utility model provides a single-phase immersion cooling device, including an immersion chamber, a heat exchanger and a flow pulsation valve; the interior of the immersion chamber is interconnected with the heat exchanger, and the immersion chamber is used to contain coolant and an object to be cooled; the flow pulsation valve is located in the immersion chamber to disturb the coolant near the object to be cooled.

[0027] During operation, the coolant near the object to be cooled is disturbed by the flow pulsation valve, destroying the boundary layer of flow heat transfer, thereby enhancing heat transfer.

[0028] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1

[0030] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of a single-phase immersion cooling device provided by an embodiment of the utility model; Figure 2 It is a structural schematic diagram of a flow pulsation valve.

[0031] See also Figure 1 In the embodiment of the utility model, the single-phase immersion cooling device includes an immersion chamber 1, a heat exchanger 2 and a flow pulsation valve 3; the interior of the immersion chamber 1 is interconnected with the heat exchanger 2, and the immersion chamber 1 is used to contain a coolant and an object to be cooled 5; the flow pulsation valve 3 is located in the immersion chamber 1 to disturb the coolant near the object to be cooled 5. That is, the immersion chamber 1 is provided with a placement area 4 corresponding to the object to be cooled 5, the flow pulsation valve 3 is located in the immersion chamber 1 and is arranged corresponding to the placement area 4, and the disturbance range corresponding to the flow pulsation valve 3 covers the placement area 4.

[0032] The single-phase immersion cooling device provided in the embodiment of the utility model is mainly used for cooling the server, and the heat generated by the server mainly comes from the work of the chip, so the object to be cooled 5 in this embodiment is mainly a chip. Of course, the single-phase immersion cooling device provided in this embodiment is also suitable for cooling other types of objects to be cooled 5, and the specific type of the object to be cooled 5 is not specifically limited in this embodiment.

[0033] The above-mentioned immersion chamber 1 is mainly used to load the object to be cooled 5 and the coolant. The immersion chamber 1 usually needs to have good sealing properties to prevent the coolant from being lost. The interior of the immersion chamber 1 needs to be interconnected with the heat exchanger 2 so that the coolant can flow between the immersion chamber 1 and the heat exchanger 2. The heat exchanger 2 is used to cool the coolant. The specific structure of the heat exchanger 2 can refer to the prior art and is not specifically limited here. In this embodiment, the coolant will circulate between the immersion chamber 1 and the heat exchanger 2 to cool the object to be cooled 5.

[0034] The immersion chamber 1 is used to hold the coolant and the object to be cooled 5. A placement area 4 is provided in the immersion chamber 1. The object to be cooled 5 is specifically fixed in the placement area 4 in the immersion chamber 1. In this embodiment, a flow pulsation valve 3 is provided inside the immersion chamber 1. The so-called flow pulsation valve 3 can generate mechanical pulsation to the liquid flowing through. In this embodiment, since the flow pulsation valve 3 is located in the immersion chamber 1, the coolant pulsating through the flow pulsation valve 3 can generate fluctuations within a certain range. Therefore, the flow pulsation valve 3 can disturb the coolant in a certain area in the immersion chamber 1 when working. In other words, the flow pulsation valve 3 has a certain disturbance range in the immersion chamber 1.

[0035] In this embodiment, the flow pulsation valve 3 needs to be located in the immersion chamber 1 and is set corresponding to the placement area 4. At this time, it is necessary to ensure that the disturbance range corresponding to the flow pulsation valve 3 covers the placement area 4, so that when working, the flow pulsation valve 3 can disturb the coolant near the object to be cooled 5 to destroy the boundary layer of flow heat transfer near the object to be cooled 5, thereby enhancing heat transfer. For the specific structure of the flow pulsation valve 3, please refer to Figure 2 , which usually includes a liquid inlet, a liquid outlet, a driving device, etc. The structure of the flow pulsation valve 3 can refer to the existing technology and will not be repeated here.

[0036] It should be clarified that the above-mentioned placement area 4 corresponds to the position of the object to be cooled 5 that mainly generates heat. Taking the chip as an example, the chip will be specifically installed in the server when working, and the server as a whole is placed in the immersion chamber 1. For the server, the main heat-generating component is the chip, so the above-mentioned placement area 4 will specifically be the position where the chip is located, and the above-mentioned flow pulsation valve 3 will be specifically set based on the position of the chip. Specifically, when the chip is fixed in the server and the flow pulsation valve 3 is set outside the server, it is usually necessary to set an opening corresponding to the flow pulsation valve 3 in the shell of the server, so that the pulsation generated by the flow pulsation valve 3 can act on the coolant near the chip through the opening to improve the heat dissipation of the chip in a targeted manner.

[0037] Specifically, in this embodiment, the coolant is usually an oil coolant, because the oil coolant has a large working viscosity and a low flow rate, and the thermal boundary layer formed by it is thicker. The flow pulsation valve 3 can more effectively destroy the boundary layer of flow heat transfer, and the effect is more significant for oil coolants.

[0038] The single-phase immersion cooling device provided in the embodiment of the utility model disturbs the coolant near the object to be cooled 5 through the flow pulsation valve 3 during operation, destroys the boundary layer of flow heat transfer, and thus enhances heat transfer.

[0039] The specific contents of the single-phase immersion cooling device provided by the utility model will be described in detail in the following utility model embodiments.

[0040] Embodiment 2

[0041] Please refer to Figure 3 , Figure 3 A schematic structural diagram of a specific single-phase immersion cooling device provided in an embodiment of the utility model.

[0042] Different from the above utility model embodiment, the utility model embodiment further defines the structure of the single-phase immersion cooling device on the basis of the above utility model embodiment. The rest of the contents have been described in detail in the above utility model embodiment and will not be repeated here.

[0043] See also Figure 3 In an embodiment of the utility model, in the channel connecting the immersion chamber 1 and the heat exchanger 2, the channel for injecting the coolant into the immersion chamber 1 is connected to the lower part of the immersion chamber 1, and the channel for extracting the coolant from the immersion chamber 1 is connected to the upper part of the immersion chamber 1.

[0044] In this embodiment, the immersion chamber 1 and the heat exchanger 2 need to be connected through at least two channels to achieve the circulation of the coolant inside them. Among the channels that connect the immersion chamber 1 and the heat exchanger 2, the channel for injecting the coolant into the immersion chamber 1 is usually connected to the lower part of the immersion chamber 1, and the channel for extracting the coolant from the immersion chamber 1 is usually connected to the upper part of the immersion chamber 1, so that the coolant flows from bottom to top in the immersion chamber 1, so that the coolant can fully contact the object to be cooled 5. A pump 6 is usually required in the above-mentioned channel to drive the circulation of the coolant. The specific position, quantity, structure, etc. of the pump 6 can be set according to actual conditions and are not specifically limited here.

[0045] Normally, in the present embodiment, a plurality of placement areas 4 are usually provided in the immersion chamber 1 to place a plurality of objects to be cooled 5, so as to achieve synchronous cooling of the plurality of objects to be cooled 5. Normally, the spacing between the plurality of placement areas 4 is equal. Accordingly, in the present embodiment, a plurality of flow pulsation valves 3 may be further provided in the immersion chamber 1, and at least one flow pulsation valve 3 is provided corresponding to one placement area 4. At this time, one placement area 4 corresponds to at least one flow pulsation valve 3, and the flow pulsation valve 3 may disturb the coolant in the range of the corresponding placement area 4 to enhance the heat dissipation effect of the corresponding placement area 4. Of course, in the present embodiment, one placement area 4 may correspond to a plurality of flow pulsation valves 3 to enhance the heat dissipation effect of each placement area 4.

[0046] This embodiment may further include a diverter plate 7 located in the immersion chamber 1, the diverter plate 7 is located below the placement area 4, and the diverter plate 7 is usually also located above the channel for injecting coolant into the immersion chamber 1. The diverter plate 7 can disperse the coolant entering the immersion chamber 1 from the lower pipe laterally as quickly as possible, and provide the dispersed coolant to each placement area 4, so as to ensure that the temperature of the coolant reaching the vicinity of each placement area 4 is roughly the same, so that each object to be cooled 5 has roughly the same cooling effect. Specifically, the diverter plate 7 is usually provided with an opening corresponding to the placement area 4, so as to ensure that the coolant with a lower temperature can contact the object to be cooled 5 as quickly as possible for cooling.

[0047] Furthermore, in this embodiment, the flow pulsation valve 3 can be set at the corresponding opening. That is, in this embodiment, the flow pulsation valve 3 can be specifically fixed at the opening of the diverter plate 7. When the diverter plate 7 is provided with an opening corresponding to the placement area 4, the flow pulsation valve 3 will be specifically fixed at the corresponding opening, thereby driving the coolant flowing from the opening to the placement area 4 to pulsate, so as to disturb the coolant near the corresponding placement area 4, destroy its boundary layer of flow heat transfer, and thus enhance heat transfer. Fixing the flow pulsation valve 3 to the opening corresponding to the diverter plate 7 can avoid setting additional fixing equipment in the immersion chamber 1, so as to simplify the structure of the immersion chamber 1.

[0048] In this embodiment, a plurality of objects to be cooled 5 are arranged in the immersion chamber 1, and a diverter plate 7 is provided at the bottom of the immersion chamber 1. The diverter plate 7 is provided with a plurality of small holes, i.e., openings, and a flow pulsation valve 3 is provided at the opening of the diverter plate 7. After the refluxed coolant passes through the flow pulsation valve 3, the flow rate will be intermittent, thereby generating periodic pulsations on the surface of the object to be cooled 5. The periodic pulsation of the coolant can destroy the flow boundary layer formed by the high-viscosity, low-flow-rate oil coolant on the surface of the object to be cooled 5, causing fluid disturbance on the surface of the object to be cooled 5, thereby strengthening the heat exchange between the object to be cooled 5 and the fluid.

[0049] In this embodiment, the flow pulsation valve 3 can be connected to the controller for communication. The controller can control the pulsation frequency of the flow pulsation valve 3, and then control the heat dissipation efficiency of the single-phase immersion cooling device. The specific type of the controller can refer to the prior art and will not be described here.

[0050] In this embodiment, the degree of heat exchange between the object to be cooled 5 and the coolant enhanced by the flow pulsation valve 3 is related to the pulsation frequency and pulsation amplitude of the flow pulsation valve 3. In this embodiment, the pulsation frequency and pulsation amplitude of the flow pulsation valve 3 can be negatively feedback regulated by the controller according to the temperature of the object to be cooled 5, that is, when the temperature of the object to be cooled 5 is higher than its allowable temperature, the pulsation frequency and pulsation amplitude of the flow pulsation valve 3 are increased by the above controller; when the temperature of the object to be cooled 5 is lower than its allowable temperature, the pulsation frequency and pulsation amplitude of the flow pulsation valve 3 are reduced by the above controller; when the temperature of the object to be cooled 5 is equal to its allowable temperature, the pulsation frequency and pulsation amplitude of the flow pulsation valve 3 are not adjusted. Of course, in this embodiment, the controller can adjust only the pulsation frequency or pulsation amplitude of the flow pulsation valve 3 separately, or can adjust them at the same time. The size of the specific adjustment needs to be set according to the actual situation, and no specific limitation is made here. After the object to be cooled 5 works and generates heat, the coolant flowing back from the heat exchanger 2 enters the immersion chamber 1 through the flow pulsation valve 3 provided on the diverter plate 7 to exchange heat with the object to be cooled 5. After the coolant completes the heat exchange with the object to be cooled 5, it flows out from the outlet above the side wall of the immersion chamber 1 and enters the heat exchanger 2, thus completing the entire heat exchange process.

[0051] The single-phase immersion cooling device provided in the embodiment of the utility model disturbs the coolant near the object to be cooled 5 through the flow pulsation valve 3 during operation, destroys the boundary layer of flow heat transfer, and thus enhances heat transfer.

[0052] Embodiment 3

[0053] The present utility model embodiment also provides a single-phase immersion cooling system, which includes a single-phase immersion cooling device as provided in any of the utility model embodiments described above. Other structures in the single-phase immersion cooling system can refer to the prior art and will not be described in detail here.

[0054] Since the single-phase immersion cooling system of this embodiment uses the single-phase immersion cooling device provided by the above-mentioned utility model embodiment, and since the single-phase immersion cooling system is provided with a flow pulsation valve 3 corresponding to the placement area in the immersion chamber 1, the flow pulsation valve 3 can disturb the coolant near the object to be cooled 5 during operation, destroying the boundary layer of flow heat transfer, thereby enhancing heat transfer, so the single-phase immersion cooling system can also have a higher cooling efficiency.

[0055] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0056] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0057] The above is a detailed introduction to a single-phase immersion cooling device and a single-phase immersion cooling system provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A single-phase immersion cooling device, characterized in that: It includes an immersion chamber, a heat exchanger and a flow pulsation valve; The interior of the immersion chamber is in communication with the heat exchanger, and the immersion chamber is used to contain cooling liquid and objects to be cooled; The flow pulsation valve is located in the immersion chamber and is used to disturb the coolant near the object to be cooled; In the channel interconnected between the immersion chamber and the heat exchanger, a channel for injecting the coolant into the immersion chamber is connected to the lower part of the immersion chamber, and a channel for extracting the coolant from the immersion chamber is connected to the upper part of the immersion chamber.

2. The single-phase immersion cooling device according to claim 1, characterized in that: A plurality of placement areas are arranged in the immersion chamber, and the objects to be cooled are fixed in the corresponding placement areas.

3. The single-phase immersion cooling device according to claim 2, characterized in that: A plurality of the flow pulsation valves are arranged in the immersion chamber, and at least one of the placement areas is correspondingly arranged with the flow pulsation valve.

4. The single-phase immersion cooling device according to claim 3, characterized in that: It also includes a diverter plate located in the immersion chamber, and the diverter plate is located below the placement area.

5. The single-phase immersion cooling device according to claim 4, characterized in that: The diverter plate is provided with an opening corresponding to the placement area.

6. The single-phase immersion cooling device according to claim 5, characterized in that: The flow pulsation valve is arranged at the corresponding opening.

7. The single-phase immersion cooling device according to claim 1, characterized in that: The flow pulsation valve is communicatively connected with the controller.

8. The single-phase immersion cooling device according to claim 1, characterized in that: The coolant is an oil coolant.

9. A single-phase immersion cooling system, characterized in that: The invention comprises a single-phase immersion cooling device as claimed in any one of claims 1 to 8.

Images