Filter cartridge, filter, liquid cooling system and electronic device for purification filtration

Abstract

The embodiment of the present application provides a filter element for purifying filtration, a filter, a liquid cooling system and an electronic device. The electronic device comprises one or more devices to be cooled and a liquid cooling system. The liquid cooling system comprises a heat exchange unit, a pump and a filter. The pump is used to drive the circulation of the liquid working medium between the heat exchange unit and the one or more devices to be cooled. The filter comprises a shell and a filter element. The filter element comprises a filter body and one or more filter screens. The filter body and the one or more filter screens are arranged in series on the filter path of the filter element. The filter body comprises a support and a filter material. The filter material comprises a molecular sieve and an adsorption material. The filter element can filter out water, organic matter and particulate matter in the liquid to be filtered.

Description

Technical Field

[0001] This application relates to the field of purification and filtration technology, specifically to a filter element, filter, liquid cooling system, and electronic device for purification and filtration. Background Technology

[0002] Fluorinated liquids have a wide range of applications in the production, use, and maintenance of electronic equipment, and can be used as electronic cleaning agents, working fluids in liquid cooling systems, etc.

[0003] Fluorinated liquids gradually deteriorate during use: they become acidic upon contact with water or with prolonged use. Furthermore, contact with other materials can generate organic matter and particulate matter that mixes into the fluorinated liquid. In liquid cooling systems, deterioration can alter the thermal properties of the fluorinated liquid, leading to poor heat dissipation and blockages. In immersion liquid cooling systems, where the fluorinated liquid is in direct contact with components, deterioration can cause even more serious problems such as corrosion and short circuits.

[0004] The existing solution is to recover the fluorinated liquid to the manufacturer and purify it through methods such as distillation. However, this method requires offline processing of the liquid cooling system, which is difficult and costly. Another solution is to add a cleaning agent to the fluorinated liquid. The cleaning agent reacts with the acid and / or water in the fluorinated liquid, and the reaction products are then absorbed and removed by a filter. This method can only be implemented periodically. If the cleaning agent is added too infrequently, it can easily cause safety problems in the refrigeration system. Automating the addition of the cleaning agent with real-time monitoring and a replenishment system would be too costly. Summary of the Invention

[0005] This application provides a filter element, filter, liquid cooling system, and electronic device for purification filtration, which can solve the problem that existing fluorinated liquid purification processes cannot remove various impurities from fluorinated liquids online in real time.

[0006] In a first aspect, a filter element is provided for use in a filter of a liquid cooling system. The liquid cooling system further includes a heat exchange unit and a pump connected to the heat exchange unit. The heat exchange unit is used to release heat from a liquid working fluid. The pump is used to drive the liquid working fluid to circulate between the heat exchange unit and one or more external devices to be cooled. The liquid working fluid absorbs heat at the one or more devices to be cooled. The filter is disposed in the circulation path of the liquid working fluid and is used to filter the liquid working fluid through the filter element. The filter element includes: a filter body, which includes a support member and a filter material; the support member is used to fix the filter material; the filter material includes a molecular sieve and an adsorbent material; the pore size of the adsorbent material is larger than the pore size of the molecular sieve; one or more filter screens; the filter body and the one or more filter screens are arranged in series in the filtration path of the filter element. This filter element can be installed in a liquid cooling system and, through the molecular sieve, adsorbent material, and filter screens, can remove various impurities such as water, organic matter, and particulate matter from the liquid to be filtered in real time online. The liquid to be filtered can be a fluorinated liquid. Specifically, this filter element can be used to filter fluorinated liquids such as perfluoroolefins, perfluoropolyethers, and hydrofluoroolefins. These fluorinated liquids are relatively stable and do not easily produce acid.

[0007] Optionally, at least one of the filter screens is located downstream of the filter body in the filtration path to prevent debris of the filter material from flowing out of the filter element.

[0008] In conjunction with the first aspect, in the first possible implementation of the first aspect, the filter material further includes an alkaline material. Some fluorinated liquids, such as perfluorohexanone, are chemically reactive, readily producing acid upon contact with water. The filter material of this implementation possesses both a molecular sieve, which can filter water from the fluorinated liquid and prevent the fluorinated liquid from producing acid upon contact with water, and an alkaline material, which can filter the acid produced when the fluorinated liquid comes into contact with water. Therefore, the filter material of this implementation can be used for filtering such chemically reactive fluorinated liquids.

[0009] In a second possible implementation of the first aspect, in conjunction with the first possible implementation of the first aspect, the mass ratio of the molecular sieve, the alkaline material, and the adsorbent material is (1-90):(0.1-30):(5-80). The filter material with the aforementioned material composition and mass ratio is suitable for filtering various fluorinated liquids such as perfluoroolefins, perfluoropolyethers, hydrofluoroolefins, and perfluorohexanone. It can take into account the generation rate of various impurities in the fluorinated liquid, making the consumption rates of the molecular sieve, alkaline material, and adsorbent material similar, resulting in a long filter element lifespan and the ability to continuously remove various impurities such as water, acid, organic matter, and particulate matter from the fluorinated liquid for a certain period of time. Alternatively, the mass ratio of the molecular sieve, the alkaline material, and the adsorbent material is (30-80):(1-30):(10-40). The filter element with the aforementioned material composition and mass ratio has a longer lifespan and can continuously remove various impurities such as water, acid, organic matter, and particulate matter from the fluorinated liquid for a longer period of time. Alternatively, the mass ratio of the molecular sieve, the alkaline material, and the adsorbent material may be (40-60):(5-25):(20-30). Filter cartridges with the aforementioned material composition and mass ratio have a longer service life and can continuously remove various impurities such as water, acid, organic matter, and particulate matter from fluorinated liquids for a longer period of time.

[0010] In a third possible implementation of the first aspect, combining any of the first to second possible implementations, the alkaline material comprises Ca(OH)₂ particles; wherein the mass percentage of Ca(OH)₂ in the Ca(OH)₂ particles is 10-99.9%, and the water content is less than or equal to 20%; and / or the alkaline material comprises Mg(OH)₂ particles; wherein the mass percentage of Mg(OH)₂ in the Mg(OH)₂ particles is 10-99.9%, and the water content is less than or equal to 20%. The water content is the mass percentage of water. Ca(OH)₂ has low cost, can be processed into granules alone, has a long acid removal lifespan, and good safety. Mg(OH)₂ has weak alkalinity, low reactivity with fluorinated liquids, a long acid removal lifespan, and good safety.

[0011] In a fourth possible implementation of the first aspect, combining the first aspect and any of the first to third possible implementations of the first aspect, the support includes a bracket; the filter material is a sintered body obtained by sintering; and the sintered body is fixed on the bracket. After the molecular sieve, adsorbent material, and alkaline material are processed into a sintered body, the sintered body can be more easily assembled and replaced.

[0012] In a fifth possible implementation of the first aspect, combining any of the first to third possible implementations of the first aspect, the support includes a container; the molecular sieve, the adsorbent material, and the alkaline material are each processed into multiple bulk particles; the multiple bulk particles are assembled within the container; or the filter material is processed into multiple bulk composite particles; each composite particle contains a molecular sieve, an adsorbent material, and an alkaline material; the multiple bulk composite particles are assembled within the container. Specifically, the container is positioned along the filtration path of the filter element so that the liquid to be filtered inevitably flows through the container and the composite particles or particles within it. Optionally, the surface of the container may have one or more small holes to facilitate the entry and exit of the liquid to be filtered. Processing the molecular sieve, adsorbent material, and alkaline material into composite particles before assembling them within the container allows for more controllable uniformity of their distribution within the container, facilitates control of the proportions, and simplifies assembly and replacement.

[0013] In conjunction with the fifth possible implementation of the first aspect, in the sixth possible implementation of the first aspect, the container includes a movable device for compressing the filter material. This implementation can increase the density of the filter material, improve the filtration effect, and at the same time prevent the composite particles in the container from being impacted, worn, or broken due to the flow of the liquid to be filtered.

[0014] In a seventh possible implementation of the first aspect, combining any of the first to third possible implementations, the alkaline material and the adsorbent are sintered together to form a sintered body; the mass percentage of the alkaline material in the sintered body is 0.5-15%; or the alkaline material and the adsorbent are each processed into multiple bulk particles; the mass percentage of the alkaline material in the multiple bulk particles is 0.5-15%; or the alkaline material and the adsorbent are processed into multiple bulk composite particles; the mass percentage of the alkaline material in the composite particles is 0.5-15%. This implementation combines the effects of acid removal and organic matter removal. Furthermore, because the adsorbent has a large surface area, the acid removal efficiency can be improved after the alkaline material and the adsorbent are combined.

[0015] In conjunction with the seventh possible implementation of the first aspect, in the eighth possible implementation of the first aspect, the alkaline material includes Na element; the adsorbent material includes activated alumina; the Na element and the activated alumina are processed into sintered bodies or composite particles, and the mass percentage of the Na element in the sintered bodies or composite particles is 0.05-15%. In addition to its adsorption properties, activated alumina also possesses a certain degree of alkalinity; therefore, the combination of activated alumina and alkaline materials can further improve the acid removal efficiency.

[0016] In conjunction with the first aspect and any of the first to eighth possible implementations of the first aspect, in the ninth possible implementation of the first aspect, the adsorbent material includes at least one of activated carbon, activated alumina, or silica gel; the specific surface area of ​​the adsorbent material is 100-2500 m². 2 The adsorbent material has a density of / g and an average pore size of 1nm-10μm. Adsorbents with these parameters can effectively absorb organic matter such as oil molecules of various sizes from the solution to be filtered.

[0017] In a tenth possible implementation of the first aspect, combining any of the first to ninth possible implementations, the adsorbent material comprises activated alumina and activated carbon; the mass percentages of the molecular sieve, the alkaline material, the activated alumina, and the activated carbon are (40-60):(5-25):(10-30):(5-15). In this implementation, activated alumina can adsorb organic matter, water, and remove acid. Specifically, activated alumina is a polar adsorbent, and its average pore size is smaller than that of activated carbon. The combination of activated alumina and activated carbon allows activated alumina to absorb smaller molecular weight organic matter and more water, while activated carbon can absorb larger molecular weight organic matter, thus achieving better adsorption of organic matter and water. Furthermore, when the filter cartridge is used to filter fluorinated liquids, activated alumina can also absorb fluoride ions generated during the acidification of the fluorinated liquid.

[0018] In conjunction with the first aspect and any of the first to tenth possible implementations of the first aspect, in the eleventh possible implementation of the first aspect, the one or more filter screens include: one or more first filter screens and one or more second filter screens; the filtration precision of the first filter screen is greater than that of the second filter screen, and the one or more first filter screens are located upstream of the one or more second filter screens on the filtration path. This implementation, through the cooperation of filter screens of various precisions, can effectively absorb particulate matter of various sizes in the solution to be filtered.

[0019] In conjunction with the eleventh possible implementation of the first aspect, in the twelfth possible implementation of the first aspect, at least one of the first filter screens and / or at least one of the second filter screens covers the liquid outlet portion of the filter body. In this implementation, when the filter material includes a sintered body, the liquid outlet portion of the filter body can be the surface area of ​​the sintered body from which the liquid to be filtered exits; when the support member includes a container, the liquid outlet portion of the filter body can be the surface area of ​​the container from which the liquid to be filtered exits. The first filter screen and / or the second filter screen covering the liquid outlet portion of the filter body, on the one hand, prevents filter material debris from remaining in the filter element and hindering subsequent cleaning; on the other hand, the filter body can support the first filter screen and / or the second filter screen, facilitating the fixation of the filter screens. Furthermore, when the filter material includes a sintered body and the support member includes a bracket, the filter screen covering the liquid outlet portion can also support and protect the sintered body to a certain extent.

[0020] In conjunction with the first aspect and any of the first to twelfth possible implementations of the first aspect, in the thirteenth possible implementation of the first aspect, the liquid inlet portion of the filter body has an inwardly concave surface. This implementation can increase the contact area between the liquid inlet portion and the liquid to be filtered, allowing the liquid to be filtered to flow into the container more evenly, thereby improving the uniformity of filter material consumption and increasing the service life of the filter element.

[0021] In a second aspect, a filter is provided, comprising: a housing; and a filter element, as in the first aspect and any of the first to thirteenth possible implementations of the first aspect, the filter element being disposed within the housing.

[0022] In conjunction with the second aspect, in a first possible implementation of the second aspect, the housing includes an inlet and an outlet; the one or more filter screens include a third filter screen disposed at the inlet of the housing. The third filter screen can prevent backflow of the liquid to be filtered, which would cause impurities such as debris from the filter material to flow out of the filter.

[0023] Thirdly, a liquid cooling system is provided, which includes: a heat exchange unit for releasing heat from a liquid working fluid;

[0024] A pump connected to the heat exchange unit drives a liquid working fluid to circulate between the heat exchange unit and one or more external devices to be cooled, where the liquid working fluid absorbs heat. A filter, disposed in the circulation path of the liquid working fluid, is used to filter the liquid working fluid. The filter includes: a housing; a filter element disposed within the housing; the filter element includes: a filter body, which includes a support and a filter material; the support is used to fix the filter material; the filter material includes a molecular sieve and an adsorbent, the pore size of the adsorbent being larger than that of the molecular sieve; one or more filter screens; the filter body and the one or more filter screens are arranged in series in the filtration path of the filter element. The filter element can be installed in a liquid cooling system, and through the molecular sieve, adsorbent, and filter screens, it can remove various impurities such as water, organic matter, and particulate matter from the liquid to be filtered in real time online. The liquid to be filtered can be a fluorinated liquid; specifically, the filter element can be used to filter fluorinated liquids such as perfluoroolefins, perfluoropolyethers, and hydrofluoroolefins, which are relatively stable and do not easily produce acid.

[0025] In conjunction with the third aspect, in the first possible implementation of the third aspect, the filter material also includes an alkaline material. Some fluorinated liquids, such as perfluorohexanone, are chemically reactive, readily producing acid upon contact with water. The filter material of this implementation possesses both a molecular sieve, which can filter water from the fluorinated liquid and prevent the fluorinated liquid from producing acid upon contact with water, and an alkaline material, which can filter the acid produced when the fluorinated liquid comes into contact with water. Therefore, the filter material of this implementation can be used for filtering such chemically reactive fluorinated liquids.

[0026] In conjunction with the first possible implementation of the third aspect, in the second possible implementation of the third aspect, the mass ratio of the molecular sieve, the alkaline material, and the adsorbent material is (1-90):(0.1-30):(5-80). The filter material with the aforementioned material composition and mass ratio is suitable for filtering various fluorinated liquids such as perfluoroolefins, perfluoropolyethers, hydrofluoroolefins, and perfluorohexanone. It can take into account the generation rate of various impurities in the fluorinated liquid, making the consumption rates of the molecular sieve, alkaline material, and adsorbent material similar, resulting in a long filter element lifespan and the ability to continuously remove various impurities such as water, acid, organic matter, and particulate matter from the fluorinated liquid for a certain period of time. Alternatively, the mass ratio of the molecular sieve, the alkaline material, and the adsorbent material is (30-80):(1-30):(10-40). The filter element with the aforementioned material composition and mass ratio has a longer lifespan and can continuously remove various impurities such as water, acid, organic matter, and particulate matter from the fluorinated liquid for a longer period of time. Alternatively, the mass ratio of the molecular sieve, the alkaline material, and the adsorbent material may be (40-60):(5-25):(20-30). Filter cartridges with the aforementioned material composition and mass ratio have a longer service life and can continuously remove various impurities such as water, acid, organic matter, and particulate matter from fluorinated liquids for a longer period of time.

[0027] In conjunction with the first or second possible implementation of the third aspect, in the third possible implementation of the third aspect, the alkaline material comprises Ca(OH)₂ particles; the mass percentage of Ca(OH)₂ in the Ca(OH)₂ particles is 10-99.9%, and the water content is less than or equal to 20%; and / or the alkaline material comprises Mg(OH)₂ particles; the mass percentage of Mg(OH)₂ in the Mg(OH)₂ particles is 10-99.9%, and the water content is less than or equal to 20%. Wherein, the water content is the mass percentage of water. Ca(OH)₂ has low cost, can be processed into granules alone, has a long acid removal life, and good safety. Mg(OH)₂ has weak alkalinity, low reactivity with fluorinated liquids, a long acid removal life, and good safety.

[0028] Combining any one of the first to third possible implementations of the third aspect, in the fourth possible implementation of the third aspect,

[0029] The alkaline material and the adsorbent are sintered together to form a sintered body; the mass percentage of the alkaline material in the sintered body is 0.5-15%; or the alkaline material and the adsorbent are each processed into multiple bulk particles; the mass percentage of the alkaline material in the multiple bulk particles is 0.5-15%; or the alkaline material and the adsorbent are processed into multiple bulk composite particles; the mass percentage of the alkaline material in the composite particles is 0.5-15%. This implementation combines the effects of acid removal and organic matter removal. Furthermore, because the adsorbent has a large surface area, the combination of the alkaline material and the adsorbent can improve the acid removal efficiency.

[0030] In a fifth possible implementation of the third aspect, combining any of the first to fourth possible implementations, the adsorbent material comprises activated alumina and activated carbon; the mass percentages of the molecular sieve, the alkaline material, the activated alumina, and the activated carbon are (40-60):(5-25):(10-30):(5-15). In this implementation, activated alumina can adsorb organic matter, water, and remove acid. Specifically, activated alumina is a polar adsorbent, with an average pore size smaller than that of activated carbon. The combination of activated alumina and activated carbon allows activated alumina to absorb smaller molecular weight organic matter and more water, while activated carbon can absorb larger molecular weight organic matter, thus achieving better adsorption of organic matter and water. Furthermore, when the filter cartridge is used to filter fluorinated liquids, activated alumina can also absorb fluoride ions generated during the acidification of the fluorinated liquid.

[0031] In conjunction with the third aspect and any of the first to fifth possible implementations of the third aspect, in the sixth possible implementation of the third aspect, the liquid working medium includes a fluorinated liquid working medium or a silicone oil working medium. Fluorinated liquid working mediums, silicone oil working mediums, etc., are prone to generating impurities such as water, organic matter, particulate matter, or acid during use. The liquid cooling system of this implementation can effectively remove these impurities.

[0032] Fourthly, an electronic device is provided, comprising: one or more devices to be cooled; a liquid cooling system as described in the third aspect and the first possible implementation of the third aspect; and a pump for driving a liquid working fluid to circulate between the heat exchange unit and the one or more devices to be cooled, thereby dissipating heat from the one or more devices. This implementation effectively removes impurities generated by the deterioration of the liquid working fluid through the liquid cooling system, improving the heat dissipation effect. Furthermore, when the liquid working fluid is in direct contact with the devices to be cooled, this implementation can also avoid problems such as corrosion and short circuits caused by impurities in the liquid working fluid. Attached Figure Description

[0033] Figure 1 Schematic diagrams of the structure of electronic devices provided for some embodiments of this application;

[0034] Figure 2 Schematic diagrams of the structure of electronic devices provided for some embodiments of this application;

[0035] Figure 3 Schematic diagrams of the structure of filters provided in some embodiments of this application;

[0036] Figure 4 Schematic diagrams of the structure of filters provided in some embodiments of this application;

[0037] Figure 5 Schematic diagrams of the structure of filters provided in some embodiments of this application;

[0038] Figure 6 Schematic diagrams of the structure of filters provided in some embodiments of this application;

[0039] Figure 7 Schematic diagrams of the structure of filters provided in some embodiments of this application;

[0040] Figure 8 This is a schematic diagram illustrating the connection structure between a filter and multiple heat-dissipating devices provided in some embodiments of this application.

[0041] Explanation of reference numerals in the attached figures:

[0042] 10-Liquid cooling system;

[0043] 100 - Filter; 200 - Heat exchange unit; 300 - Pump; 400 - Cold plate;

[0044] 110 - Housing; 111 - Liquid inlet; 112 - Liquid outlet; 113 - Fixed seal; 120 - Filter element; 121 - Filter body; 122 - Filter screen;

[0045] 1211-Support component; 1211a-Container; 1211b-Support; 1212-Filter material; 1213-Liquid inlet; 1214-Liquid outlet; 1215-Moving device; 1221-First filter screen; 1222-Second filter screen; 1223-Third filter screen;

[0046] 20 - Components to be cooled;

[0047] 30 - Outer shell;

[0048] 40 - Pipeline;

[0049] 410 - Main pipeline; 420 - Branch pipeline. Detailed Implementation

[0050] The embodiments of this application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0051] In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. It should be noted that the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone.

[0052] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] In the description of this application, it should be understood that the terms "upper", "lower", "side", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the installation orientation or positional relationship, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0054] It should also be noted that in the embodiments of this application, the same reference numerals are used to represent the same component or part. For the same part in the embodiments of this application, the reference numerals may only be used to mark one part or component as an example. It should be understood that the reference numerals are also applicable to other identical parts or components.

[0055] This application provides a filter element, filter, liquid cooling system, and electronic device for purification filtration. The filter element can be used for liquid filtration. Specifically, it can be used for filtering electronic cleaning fluids, such as fluorinated cleaning fluids; it can also be used for filtering liquid cooling media, such as fluorinated liquids and silicone oils. The electronic device can be an artificial intelligence device, a cloud computing device, a server, a communication device (e.g., a router), a storage device, a computer, etc.

[0056] Please refer to Figure 1 , Figure 1 This is a schematic diagram illustrating the structure of an electronic device employing single-phase immersion liquid cooling, provided for some embodiments of this application. In this embodiment, the electronic device includes a housing 30, a heat-dissipating component 20, and a liquid cooling system 10. The heat-dissipating component 20 is placed inside the housing 30. The liquid cooling system 10 includes a heat exchange unit 200, a pump 300, and a filter 100. Two channels connect the housing 30 and the heat exchange unit 200. The pump 300 is disposed in one channel, and the filter 100 is disposed in the other channel. The filter 100 contains a filter element 120. When the electronic device is performing heat dissipation, the housing 30, the channels, and the heat exchange unit 200 contain a liquid working fluid, and the heat-dissipating component 20 can be immersed in the liquid working fluid. The pump 300 drives the liquid working fluid to circulate between the heat exchange unit 200 and the housing 30. The heat dissipation process of this electronic device is as follows: the liquid working medium inside the outer casing 30 absorbs the heat emitted by the device to be cooled 20 and heats up. The heated liquid working medium then enters the heat exchange unit 200 and releases heat to cool down. The cooled liquid working medium flows back to the outer casing 30 to absorb the heat emitted by the device to be cooled 20. This process is repeated cyclically, thereby transferring the heat from the device to be cooled 20 to the outside. During the circulation process, the liquid working medium continuously passes through the filter element 120 of the filter 100, achieving a real-time filtration effect.

[0057] Please refer to Figure 2 , Figure 2 This is a schematic diagram of an electronic device employing a cold plate liquid cooling system, provided for some embodiments of this application. In this embodiment, the electronic device includes a heat-dissipating component 20 and a liquid cooling system 10. The liquid cooling system 10 includes a heat exchange unit 200, a pump 300, a cold plate 400, and a filter 100. The heat-dissipating component 20 is thermally connected to the cold plate 400. Two channels connect the cold plate 400 and the heat exchange unit 200; the pump 300 is disposed in one channel, and the filter 100 is disposed in the other channel. The filter 100 contains a filter element 120. When the electronic device is performing heat dissipation, the cold plate 400, the channels, and the heat exchange unit 200 contain a liquid working fluid, and the pump 300 drives the liquid working fluid to circulate between the heat exchange unit 200 and the cold plate 400. The heat dissipation process of this electronic device is as follows: the liquid working medium in the cold plate 400 absorbs the heat generated by the device to be cooled 20 and heats up. The heated liquid working medium enters the heat exchange unit 200 and releases heat to complete the cooling process. The cooled liquid working medium flows back to the cold plate 400 to absorb the heat generated by the device to be cooled 20. This process is repeated cyclically, thereby transferring the heat from the device to be cooled 20 to the outside. During the circulation process, the liquid working medium continuously passes through the filter element 120 of the filter 100, achieving a real-time filtration effect.

[0058] It is understood that the filter 100 with filter element 120 of this application can also be used in electronic devices that employ other liquid cooling methods. For example, the electronic device may employ two-phase immersion liquid cooling or spray liquid cooling, and the filter 100 may be placed in the circulation path of the liquid cooling medium.

[0059] Please refer to Figure 3 This application provides a filter 100 in some embodiments. The filter 100 includes a housing 110 and a filter element 120. The housing 110 includes an inlet 111, an outlet 112, and a fixing seal 113. The filter element 120 is fixed within the housing 110 by the fixing seal 113. When the filter 100 is in operation, the liquid to be filtered enters the filter 100 through the inlet 111, is filtered by the filter element 120, and then exits through the outlet 112. Optionally, the liquid to be filtered can be a fluorinated liquid or silicone oil. Fluorinated liquids and silicone oils are prone to generating impurities such as water, organic matter, particulate matter, or acids during use; the filter element 120 can effectively remove at least some of these impurities.

[0060] The filter element 120 includes a filter body 121. The filter body 121 includes a support member 1211 and a filter material 1212. The support member 1211 is connected to a fixing seal member 113. The support member 1211 is used to fix the filter material 1212.

[0061] The filter element 121 is used to filter water and organic matter. Specifically, the filter material 1212 includes a molecular sieve and an adsorbent material. The molecular sieve may include at least one of 3A, 4A, 5A, or 13X. The molecular sieve has a small pore size and can adsorb water from the liquid to be filtered. The adsorbent material may include at least one of activated carbon, activated alumina, or silica gel. Optionally, the activated carbon may include at least one of wood-based activated carbon, coconut shell activated carbon, or coal-based activated carbon. The pore size of the adsorbent material is larger than that of the molecular sieve and can adsorb organic matter such as oil, esters, and alcohols from the liquid to be filtered. Optionally, the average pore size of the molecular sieve is 0.2-1.0 nm, and the specific surface area of ​​the adsorbent material is 100-2500 m². 2 The adsorbent material has a density of / g and an average pore size of 1nm-10μm. Adsorbents with these parameters can effectively absorb organic matter such as oil molecules of various sizes from the solution to be filtered.

[0062] The filter material 1212 can have different forms, such as a dispersed form or a monolithic form. The support member 1211 changes accordingly based on the form of the filter material 1212 to achieve the effect of fixing the filter material 1212. Figure 3 As shown, the filter material 1212 can be in the form of dispersed particles, and the support 1211 can be a container 1211a, which is used to hold the particles of the filter material 1212. Figure 4 As shown, in some other embodiments of the filter 100 provided in this application, the filter material 1212 can be a whole sintered body, the support member 1211 can be a bracket 1211b, and the sintered body is fixed on the bracket 1211b.

[0063] The filter body 121 has a liquid inlet 1213 and a liquid outlet 1214. The liquid to be filtered enters the filter body 121 through the liquid inlet 1213, is filtered, and then exits through the liquid outlet 1214. It can be understood that the liquid inlet 1213 and the liquid outlet 1214 of the filter body 121 can be surface areas of the support member 1211 and / or the filter material 1212. For example, when the support member 1211 is a container 1211a, the liquid inlet 1213 and the liquid outlet 1214 of the filter body 121 can be specific areas on the surface of the container 1211a; when the filter material 1212 is in the form of a sintered body, the liquid inlet 1213 and the liquid outlet 1214 of the filter body 121 can be specific areas on the surface of the filter material 1212. The liquid inlet 1213 of the filter body 121 communicates with the liquid inlet 111 of the housing 110, so that the liquid to be filtered can reach the filter body 121 from the liquid inlet 111 of the housing 110. The fixed seal 113 is provided around the liquid inlet 111 to prevent the liquid to be filtered from leaking between the liquid inlet 1213 of the filter body 121 and the liquid inlet 111 of the housing 110.

[0064] like Figure 3As shown, container 1211a is cylindrical, and one end of cylindrical container 1211a serves as liquid inlet 1213 of filter body 121. Liquid inlet 1213 of filter body 121 has an inwardly concave surface. The inwardly concave surface can increase the contact area between liquid inlet 1213 and the liquid to be filtered, so that the liquid to be filtered flows into container 1211a more evenly. As a result, the consumption uniformity of filter material 1212 is better, and the service life of filter element 120 is improved.

[0065] The filter element 120 also includes one or more filter screens 122. Optionally, the one or more filter screens 122 include at least one of a polyester fiber filter screen 122, a stainless steel filter screen 122, or a glass fiber felt filter screen 122. The filter screen 122 is used to filter particulate matter.

[0066] The filter element 121 and one or more filter screens 122 are connected in series in the filtration path of the filter element 120 to ensure that the liquid to be filtered passes through the filter element 121 and the filter screen 122 when flowing in the filter 100, ultimately achieving a combined filtration effect of the filter element 121 and the filter screen 122. The filtration path of the filter element 120 is the path formed by the flow of the liquid to be filtered in the filter element 120 when using the filter element 120 to filter the liquid. Figure 3 and Figure 4 The multiple dashed arrows indicate the direction of flow of the liquid to be filtered in the filter element 120 during filtration. Optionally, all filter screens 122 may be located upstream of the filter body 121 in the filtration path. Optionally, all filter screens 122 may be located downstream of the filter body 121 in the filtration path. Optionally, some filter screens 122 may be located upstream of the filter body 121 in the filtration path, and some filter screens 122 may be located downstream of the filter body 121 in the filtration path. Preferably, at least one of the filter screens 122 is located downstream of the filter body 121 in the filtration path to prevent debris of the filter material 1212 from flowing out of the filter 100.

[0067] The filter 100 with filter element 120 in this embodiment is installed in the liquid cooling system 10. It can remove various impurities such as water, organic matter, and particulate matter from the liquid to be filtered in real time online through molecular sieves, adsorption materials, and filter screen 122.

[0068] In this embodiment, the filter material 1212 may not be an acid-removing material. Correspondingly, the liquid to be filtered may be a fluorinated liquid such as perfluoroolefin, perfluoropolyether, or hydrofluoroolefin. These fluorinated liquids are relatively stable and do not easily produce acid.

[0069] In some embodiments, the filter material 1212 further includes an alkaline material for removing acid, so that the filter element 120 can be used for filtering fluorinated liquids such as perfluorohexanone. Perfluorohexanone is chemically reactive and readily produces acid upon contact with water. On one hand, the filter material 1212 of this embodiment has a molecular sieve, which can filter water in the fluorinated liquid and prevent the fluorinated liquid from producing acid upon contact with water; on the other hand, the filter material 1212 has an alkaline material, which can filter the acid produced by the fluorinated liquid upon contact with water. Therefore, the filter material 1212 of this embodiment can be used for filtering such chemically reactive fluorinated liquids and can effectively reduce the acid value in such fluorinated liquids. Optionally, the alkaline material includes at least one of Mg(OH)2, Ca(OH)2, KOH, NaOH, LiOH, Na2O, CaCO3, Na2CO3, or NaHCO3.

[0070] In some embodiments, the mass ratio of molecular sieve, alkaline material, and adsorbent material in filter material 1212 is (1-90):(0.1-30):(5-80). Filter material 1212 with the aforementioned material composition and mass ratio can be adapted to the filtration of various fluorinated liquids such as perfluoroolefins, perfluoropolyethers, hydrofluoroolefins, and perfluorohexanone. It can take into account the generation rate of various impurities in the fluorinated liquid, making the consumption rate of molecular sieve, alkaline material, and adsorbent material similar, resulting in a long service life of filter element 120. It can continuously remove various impurities such as water, acid, organic matter, and particulate matter from the fluorinated liquid for a certain period of time. Preferably, the mass ratio of molecular sieve, alkaline material, and adsorbent material is (30-80):(1-30):(10-40). Filter element 120 with the aforementioned material composition and mass ratio has a longer service life and can continuously remove various impurities such as water, acid, organic matter, and particulate matter from the fluorinated liquid for a longer period of time. More preferably, the mass ratio of molecular sieve, alkaline material, and adsorbent material is (40-60):(5-25):(20-30). The filter element 120 with the aforementioned material composition and mass ratio has a longer service life and can continuously remove various impurities such as water, acid, organic matter, and particulate matter from the fluorinated liquid for a longer period. It can reduce the water content in the liquid to be filtered to 0.1-10 ppm, the acid value to 0.01-1 ppm, or even undetectable, while maintaining the purity of the liquid to be filtered at over 99.8%.

[0071] In some embodiments, the adsorbent material includes activated alumina and activated carbon; the mass percentage of the molecular sieve, the alkaline material, the activated alumina, and the activated carbon is (40-60):(5-25):(10-30):(5-15). In this embodiment, activated alumina can adsorb organic matter, water, and remove acid. Specifically, activated alumina is a polar adsorbent, and its average pore size is smaller than that of activated carbon. Activated alumina can absorb organic matter with smaller molecular weights and more water, while activated carbon can absorb organic matter with larger molecular weights. The combination of activated alumina and activated carbon achieves better adsorption of organic matter and water. In addition, when filter element 120 is used to filter fluorinated liquid, activated alumina can also absorb fluoride ions generated by the acidification of the fluorinated liquid.

[0072] In some embodiments, the alkaline material includes Ca(OH)₂ particles and / or Mg(OH)₂ particles. In the Ca(OH)₂ particles, the mass percentage of Ca(OH)₂ is 10-99.9%, and the moisture content is less than or equal to 20%. In the Mg(OH)₂ particles, the mass percentage of Mg(OH)₂ is 10-99.9%, and the moisture content is less than or equal to 20%. Ca(OH)₂ is low in cost, can be processed into particles alone, has a long acid removal lifespan (0.3-2 years), and good safety. Mg(OH)₂ is weakly alkaline, has low reactivity with fluorinated liquids, a long acid removal lifespan, and good safety. The moisture content in the particles is the mass percentage of water in the particles; a moisture content of less than or equal to 20% can effectively improve the service life of Ca(OH)₂ particles and / or Mg(OH)₂ particles.

[0073] In some implementations, such as Figure 4 As shown, the support 1211 includes a bracket 1211b. Correspondingly, the filter material 1212 is a sintered body obtained through sintering. As an optional method for obtaining the sintered body, molecular sieves, particles containing adsorbent material, and particles containing alkaline material can be obtained first, and then sintered together using a binder to obtain the sintered body. The sintered body is fixed to the bracket 1211b to prevent it from colliding and breaking with other structural components as the liquid to be filtered flows. Optionally, as... Figure 4 As shown, the sintered body is cylindrical, and the support 1211b has a shaft, allowing the sintered body to be fitted onto the shaft before being fixed. It is understood that the support 1211b can also have other shapes, such as a container 1211a with a accommodating space, allowing the sintered body to be placed in the accommodating space before being fixed. In this embodiment, the support 1211b is used to fix the sintered body, but the shapes of the support 1211b and the sintered body are not limited.

[0074] In some implementations, such as Figure 3As shown, the support member 1211 includes a container 1211a. The container 1211a includes an outer wall that surrounds a receiving space. This embodiment does not limit the shape of the container 1211a. Accordingly, the molecular sieve, adsorbent material, and alkaline material are each processed into multiple bulk particles; these multiple bulk particles are assembled in the receiving space of the container 1211a. Alternatively, the filter material 1212 is processed into multiple bulk composite particles, each composite particle containing a molecular sieve, adsorbent material, and alkaline material. These multiple bulk composite particles are assembled in the receiving space of the container 1211a. The container 1211a is positioned on the filtration path of the filter element 120 so that the liquid to be filtered flows through the container 1211a and the particles or composite particles within it. Optionally, one or more small holes are provided on the outer wall of container 1211a to facilitate the inflow and outflow of the liquid to be filtered. It is understood that the size of the holes should be smaller than the size of the particles or composite particles inside container 1211a to prevent leakage. If the molecular sieve, adsorbent material, and alkaline material are processed into multiple bulk particles, these bulk particles can be mixed evenly and then placed inside container 1211a. Furthermore, please refer to... Figure 5 Alternatively, the molecular sieve particles, adsorbent material particles, and alkaline material particles can be placed in layers within container 1211a. Optionally, the container 1211a can be divided into multiple zones, each zone for holding one type of particle (molecular sieve, adsorbent material, or alkaline material), facilitating the replacement of different particle types. If the molecular sieve, adsorbent material, and alkaline material are processed into composite particles before being assembled into container 1211a, the uniformity of their distribution within container 1211a is more controllable, and the proportions are easier to control, simplifying assembly and replacement. Optionally, in this embodiment, the external dimensions of the particles or composite particles range from 0.5 mm to 30 mm. This size range ensures that, given a fixed total volume of particles or composite particles, the particles or composite particles have a sufficiently large surface area to contact and filter the liquid to be filtered. It also reduces the difficulty and cost of processing the small holes in container 1211a, while ensuring that the particles or composite particles do not leak from the small holes.

[0075] In some embodiments, the alkaline material and the adsorbent are sintered bodies; the mass percentage of the alkaline material in the sintered body is 0.5-15%. Alternatively, the alkaline material and the adsorbent are processed into multiple bulk particles; the mass percentage of the alkaline material in the multiple bulk particles is 0.5-15%. Alternatively, the alkaline material and the adsorbent are processed into multiple bulk composite particles; the mass percentage of the alkaline material in the composite particles is 0.5-15%. Specifically, the alkaline material and the adsorbent can be ground and then combined with a binder to form a single particle; alternatively, the adsorbent can be impregnated in the alkaline material to obtain composite particles of the alkaline material and the adsorbent. For example, activated carbon particles can be impregnated in solutions of KOH, NaOH, LiOH, Ca(OH)2, Na2CO3, or NaHCO3 and then removed to obtain composite particles.

[0076] This embodiment can achieve a combination of acid removal and organic matter removal effects. Furthermore, because the adsorbent material has a large surface area, combining alkaline materials with the adsorbent material can improve the acid removal efficiency.

[0077] In some embodiments, the alkaline material includes sodium (Na); the adsorbent material includes activated alumina; the sodium and the activated alumina are processed into sintered bodies or composite particles, and the mass percentage of sodium in the sintered bodies or composite particles is 0.05-15%. In addition to its adsorption properties, activated alumina also possesses a certain degree of alkalinity; therefore, the combination of activated alumina and alkaline materials can further improve acid removal efficiency.

[0078] The following provides specific embodiments of filter material 1212. These embodiments are only some embodiments of filter material 1212 of this application and are not intended to limit this application.

[0079] Example 1 of filter material 1212

[0080] In this embodiment, the mass ratio of molecular sieve, alkaline material, and adsorbent material in filter material 1212 is 70:20:10. The molecular sieve is 3A granules. The alkaline material is Ca(OH)2 granules, with a Ca(OH)2 mass percentage of 95% and a moisture content of 10%. The adsorbent material is wood-based activated carbon granules with a specific surface area greater than 600 m². 2 / g.

[0081] Example 2 of filter material 1212

[0082] In this embodiment, the mass ratio of molecular sieve, alkaline material, and adsorbent material in filter material 1212 is 80:15:5. The molecular sieve is 4A granules. The alkaline material is Ca(OH)2 granules, with a Ca(OH)2 mass percentage of 95% and a moisture content of 10%. The adsorbent material is coconut shell activated carbon granules with a specific surface area greater than 400 m². 2 / g.

[0083] Example 3 of filter material 1212

[0084] In this embodiment, the mass ratio of molecular sieve, alkaline material, and adsorbent material in filter material 1212 is 80:15:5. The molecular sieve is 5A granules. The alkaline material is Mg(OH)2 granules, with a Mg(OH)2 mass percentage of 95% and a moisture content of 15%. The adsorbent material is coal-based activated carbon granules with a specific surface area greater than 800 m² / g. 2 / g.

[0085] Example 4 of filter material 1212

[0086] In this embodiment, the mass ratio of molecular sieve, alkaline material, and adsorbent material in filter material 1212 is 55:20:25. The molecular sieve is 13X. The alkaline material is Na2CO3. The adsorbent material is activated alumina and wood-based activated carbon, with a specific surface area greater than 1200 m². 2 / g. The mass ratio of activated alumina to wood-based activated carbon is 20:5. Molecular sieves, alkaline materials, and adsorbent materials are sintered together using a binder.

[0087] Example 5 of filter material 1212

[0088] In this embodiment, the mass ratio of molecular sieve, alkaline material, and adsorbent material in filter material 1212 is 80:1.6:18.4. The molecular sieve is 3A particles. The alkaline material is KOH, and the adsorbent material is coal-based activated carbon particles. The coal-based activated carbon particles are impregnated in KOH solution to obtain composite particles. The KOH mass percentage of the composite particles is 8%, and the moisture content of the composite particles is 5%.

[0089] Example 6 of filter material 1212

[0090] In this embodiment, the mass ratio of molecular sieve, alkaline material, and adsorbent material in filter material 1212 is 80:2:18. The molecular sieve is 3A particles. The alkaline material is Ca(OH)2, and the adsorbent material is coal-based activated carbon particles. The coal-based activated carbon particles are impregnated in Ca(OH)2 solution to obtain composite particles. The mass percentage of Ca(OH)2 in the composite particles is 10%, and the moisture content of the composite particles is 7%.

[0091] Example 7 of filter material 1212

[0092] In this embodiment, the mass ratio of molecular sieve, alkaline material, and adsorbent material in filter material 1212 is 50:2.5:47.5. The molecular sieve is 4A particles. The alkaline material is Na2CO3, and the adsorbent material is activated alumina particles. The activated alumina particles are impregnated in a Na2CO3 solution to obtain composite particles. The Na2CO3 mass percentage of the composite particles is 5%, and the water content of the composite particles is 2%.

[0093] In some embodiments, one or more filter screens 122 include: one or more first filter screens 1221 and one or more second filter screens 1222. The filtration accuracy of the first filter screen 1221 is greater than that of the second filter screen 1222, and the one or more first filter screens 1221 are located upstream of the one or more second filter screens 1222 in the filtration path. Optionally, the filtration accuracy of the first filter screen 1221 is less than or equal to 50 μm, and the filtration efficiency is 99%. At least one first filter screen 1221 is disposed downstream of the filter body 121 to absorb larger particles and impurities. These particles and impurities may be debris generated by the flow of the liquid to be filtered impacting the filter material 1212, or debris generated by the collision of particles or composite particles of the filter material 1212. Optionally, the filtration accuracy of the second filter screen 1222 is less than or equal to 15 μm, and the filtration efficiency is 99%. Optionally, the first filter screen 1221 is a glass fiber felt or polyester fiber mesh with a thickness of 0.3-10 mm, and the second filter screen 1222 is a multi-layered, pleated metal filter screen with a mesh size of 1000. Preferably, the filtration accuracy of the second filter screen 1222 is less than or equal to 10 μm. This embodiment, by using filter screens 122 of various filtration accuracies, can effectively absorb particulate matter of various sizes in the solution to be filtered.

[0094] In some embodiments, the first filter screen 1221 and the second filter screen 1222 are combined and placed at the liquid outlet 112 of the housing 110. When replacing them later, the combined first filter screen 1221 and the second filter screen 1222 can be disassembled and installed at the same time.

[0095] In some embodiments, at least one of the first filter screens 1221 and / or at least one of the second filter screens 1222 covers the liquid outlet portion 1214 of the filter body 121. In this embodiment, when the support member 1211 includes a container 1211a, the liquid outlet portion 1214 of the filter body 121 can be the surface area of ​​the container 1211a from which the liquid to be filtered exits. Figure 3As shown, container 1211a is cylindrical. One end of the cylindrical container 1211a can serve as the liquid inlet 1213 of the filter body 121, and the outer cylindrical surface of the cylindrical container 1211a can serve as the liquid outlet 1214 of the filter body 121. When the filter material 1212 includes a sintered body, the liquid outlet 1214 of the filter body 121 can be the surface area of ​​the sintered body from which the liquid to be filtered exits. Figure 4 As shown, the sintered body is cylindrical. The inner cylindrical surface of the cylindrical sintered body can serve as the liquid inlet 1213 of the filter body 121, and the outer cylindrical surface of the cylindrical sintered body can serve as the liquid outlet 1214 of the filter body 121. Optionally, as... Figure 3 As shown, the first filter screen 1221 can cover the liquid outlet 1214 of the filter body 121, and the second filter screen 1222 can be disposed at the liquid outlet 112 of the housing 110. Optionally, as shown... Figure 4 As shown, the first filter screen 1221 and the second filter screen 1222 can be combined and then cover the liquid outlet portion 1214 of the filter body 121. The first filter screen 1221 and / or the second filter screen 1222 covering the liquid outlet portion 1214 of the filter body 121 serves two purposes: firstly, it prevents debris from the filter material 1212 from remaining in the filter element 120 and hindering subsequent cleaning; secondly, the filter body 121 can support the first filter screen 1221 and / or the second filter screen 1222, facilitating the fixation of the filter screens 122. Furthermore, when the filter material 1212 includes a sintered body and the support member 1211 includes a bracket 1211b, the filter screen covering the liquid outlet portion 1214 can also protect the sintered body to some extent.

[0096] In some implementations, such as Figure 6 As shown, one or more filter screens 122 include a third filter screen 1223, which is disposed at the liquid inlet 111 of the housing 110. The third filter screen 1223 can prevent backflow of the liquid to be filtered, thus preventing debris and other impurities from the filter material 1212 from flowing out of the filter 100. Optionally, the filtration accuracy of the third filter screen 1223 is less than or equal to the filtration accuracy of the first filter screen 1221. Optionally, the filtration accuracy of the first filter screen 1221 is less than or equal to 50 μm, and the filtration efficiency is 99%.

[0097] In some embodiments, container 1211a includes a movable device 1215 for compressing filter material 1212. Alternatively, as... Figure 7As shown, container 1211a is cylindrical, with one end recessed inward to serve as the liquid inlet 1213 of filter body 121. Movable device 1215 is located at the other end of cylindrical container 1211a. Movable device 1215 includes a baffle and an elastic element. The baffle is located within the accommodating space of container 1211a to abut against filter material 1212, and the elastic element provides elasticity to drive the baffle to compress the filter material 1212. This embodiment can increase the density of filter material 1212, improve the filtration effect, and also prevent particles or composite particles in container 1211a from impacting, abrading, or breaking due to the flow of the liquid to be filtered.

[0098] Optionally, one or more first filter screens 1221 and / or one or more second filter screens 1222 can be disposed on the side of the baffle facing the filter material 1212. This can prevent particulate matter from leaking from the baffle and can also act as a buffer between the baffle and the filter material 1212 to prevent the baffle from crushing the particles or composite particles of the filter material 1212.

[0099] Some embodiments of this application provide a liquid cooling system 10. The liquid cooling system 10 includes a heat exchange unit 200, a pump 300, and a filter 100. The pump 300 is connected to the heat exchange unit 200. When in use, the heat exchange unit 200 contains a liquid working fluid. The pump 300 drives the liquid working fluid to circulate between the heat exchange unit 200 and one or more external devices 20 to be cooled. The liquid working fluid absorbs heat emitted by the devices 20 to be cooled and heats up; the heated liquid working fluid then enters the heat exchange unit 200 and releases heat to complete the cooling process.

[0100] Optionally, the liquid working fluid can directly contact the device 20 to absorb heat. Correspondingly, the liquid cooling system 10 can be an immersion liquid cooling system 10 or a spray liquid cooling system 10. Optionally, a thermally conductive material can also be provided between the liquid working fluid and the device 20 to be cooled. The heat emitted by the device 20 is conducted to the liquid working fluid through the thermally conductive material. Correspondingly, the liquid cooling system 10 can be a cold plate liquid cooling system 10.

[0101] The filter 100 in this embodiment can be any of the filter 100 in the preceding embodiments. The filter 100 is disposed in the circulation path of the liquid working medium for filtering the liquid working medium. Optionally, a pipe 40 is connected between any two of the heat exchange unit 200, pump 300, and heat dissipation device 20 to serve as a flow channel for the liquid working medium, and the filter 100 can be disposed in any of the pipes 40 to perform the filtering function. It is understood that, as Figure 8As shown, when there are multiple heat dissipation devices 20, the pipe 40 can be divided into a main pipe 410 and a branch pipe 420. Each heat dissipation device 20 is connected to the main pipe 410 through a branch pipe 420 and then connected to the pump 300 and / or the heat exchange unit 200. At this time, the filter 100 can be installed on the main pipe 410 so that the filter 100 can filter the liquid working fluid passing through each heat dissipation device 20.

[0102] Optionally, the liquid working medium includes a fluorinated liquid working medium or a silicone oil working medium. Fluorinated liquid working mediums, silicone oil working mediums, etc., are prone to generating impurities such as water, organic matter, particulate matter, or acid during use. The liquid cooling system 10 of this embodiment can effectively remove these impurities.

[0103] Some embodiments of this application provide an electronic device. The electronic device includes one or more heat dissipation devices and a liquid cooling system 10 as described in any of the foregoing embodiments. A pump 300 in the liquid cooling system 10 drives a liquid working fluid to circulate between the heat exchange unit 200 and the one or more heat-dissipating devices 20, thereby dissipating heat from the one or more heat-dissipating devices 20. This embodiment effectively removes impurities caused by the deterioration of the liquid working fluid through the liquid cooling system 10, improving the heat dissipation effect. Furthermore, when the liquid working fluid is in direct contact with the heat-dissipating device 20, this embodiment can also prevent impurities in the liquid working fluid from causing corrosion or short circuits in the heat-dissipating device 20.

Claims

1. A filter element, characterized in that, The filter element is used in the filter of the liquid cooling system; the liquid cooling system also includes a heat exchange unit and a pump connected to the heat exchange unit; the heat exchange unit is used to release heat from the liquid working fluid; the pump is used to drive the liquid working fluid to circulate between the heat exchange unit and one or more external devices to be cooled; the liquid working fluid absorbs heat at the one or more devices to be cooled. The filter is disposed in the circulation path of the liquid working medium and is used to filter the liquid working medium through the filter element; The filter element includes: A filter body, comprising a support and a filter material; the support is used to fix the filter material; the filter material comprises a molecular sieve and an adsorbent material, wherein the pore size of the adsorbent material is larger than the pore size of the molecular sieve. One or more filters; The filter element and the one or more filter screens are connected in series on the filtration path of the filter cartridge.

2. The filter element as described in claim 1, characterized in that, The filter material also includes alkaline materials.

3. The filter element as described in claim 2, characterized in that, The mass ratio of the molecular sieve, the alkaline material, and the adsorbent material is (1-90):(0.1-30):(5-80); or The mass ratio of the molecular sieve, the alkaline material, and the adsorbent material is (30-80):(1-30):(10-40); or The mass ratio of the molecular sieve, the alkaline material, and the adsorbent material is (40-60):(5-25):(20-30).

4. The filter element as described in any one of claims 2-3, characterized in that, The alkaline material includes Ca(OH)2 particles; The Ca(OH)2 particles contain Ca(OH)2 with a mass percentage of 10-99.9% and a moisture content of less than or equal to 20%; and / or The alkaline material includes Mg(OH)2 particles; The Mg(OH)2 particles contain 10-99.9% Mg(OH)2 by mass and have a moisture content of less than or equal to 20%.

5. The filter element according to any one of claims 1-4, characterized in that, The support is a bracket; the filter material is a sintered body obtained by sintering; the sintered body is fixed on the bracket.

6. The filter element according to any one of claims 1-4, characterized in that, The support component is a container; The molecular sieve, the adsorbent material, and the alkaline material are each processed into multiple bulk particles; the multiple bulk particles are assembled in the container; or The filter material is processed into multiple bulk composite particles; each composite particle contains a molecular sieve, an adsorbent material, and an alkaline material; the multiple bulk composite particles are assembled in the container.

7. The filter element as described in claim 6, characterized in that, The container includes a movable device; The movable device is used to compress the filter material.

8. The filter element according to any one of claims 2-4, characterized in that, The alkaline material and the adsorbent material are sintered together to form a sintered body; the mass percentage of the alkaline material in the sintered body is 0.5-15%; or The alkaline material and the adsorbent material are each processed into multiple bulk particles; the mass percentage of the alkaline material in the multiple bulk particles is 0.5-15%; or The alkaline material and the adsorbent material are processed into multiple bulk composite particles; the mass percentage of the alkaline material in the composite particles is 0.5-15%.

9. The filter element as described in claim 8, characterized in that, The alkaline material includes sodium. The adsorption material includes activated alumina; The Na element and the activated alumina are processed into sintered bodies or composite particles, and the mass percentage of the Na element in the sintered body or composite particles is 0.05-15%.

10. The filter element according to any one of claims 1-9, characterized in that, The adsorption material includes at least one of activated carbon, activated alumina, or silica gel; the specific surface area of ​​the adsorption material is 100-2500 m². 2 / g, with an average pore size of 1nm-10μm.

11. The filter element according to any one of claims 2-10, characterized in that, The adsorption material includes activated alumina and activated carbon; The mass percentage of the molecular sieve, the alkaline material, the activated alumina and the activated carbon is (40-60):(5-25):(10-30):(5-15).

12. The filter element according to any one of claims 1-11, characterized in that, The plurality of filters includes one or more first filters and one or more second filters: The filtration accuracy of the one or more first filters is greater than that of the one or more second filters, and the one or more first filters are located upstream of the one or more second filters on the filtration path.

13. The filter element as described in claim 12, characterized in that, At least one of the first filter screens and / or at least one of the second filter screens covers the liquid outlet portion of the filter body.

14. The filter element according to any one of claims 1-13, characterized in that, The liquid inlet portion of the filter body has an inwardly recessed surface.

15. A filter, characterized in that, The filter includes: case; The filter element as described in any one of claims 1-14, wherein the filter element is disposed within the housing.

16. The filter as claimed in claim 15, characterized in that, The housing includes a liquid inlet and a liquid outlet; The one or more filters include: The third filter screen is disposed at the liquid inlet of the housing.

17. A liquid cooling system, characterized in that, include: A heat exchange unit is used to release heat from the liquid working fluid; A pump connected to the heat exchange unit is used to drive the liquid working fluid to circulate between the heat exchange unit and one or more external devices to be cooled, wherein the liquid working fluid absorbs heat at the one or more devices to be cooled. A filter is installed in the circulation path of the liquid working medium for filtering the liquid working medium; The filter includes: case; Filter element disposed within the housing; The filter element includes: A filter body, comprising a support and a filter material; the support is used to fix the filter material; the filter material comprises a molecular sieve and an adsorbent material, wherein the pore size of the adsorbent material is larger than the pore size of the molecular sieve. One or more filters; The filter element and the one or more filter screens are connected in series on the filtration path of the filter cartridge.

18. The liquid cooling system as described in claim 17, characterized in that, The filter material also includes alkaline materials.

19. The liquid cooling system as described in claim 18, characterized in that, The mass ratio of the molecular sieve, the alkaline material, and the adsorbent material is (1-90):(0.1-30):(5-80); or The mass ratio of the molecular sieve, the alkaline material, and the adsorbent material is (30-80):(1-30):(10-40); or The mass ratio of the molecular sieve, the alkaline material, and the adsorbent material is (40-60):(5-25):(20-30).

20. The liquid cooling system according to any one of claims 18-19, characterized in that, The alkaline material includes Ca(OH)2 particles; The Ca(OH)2 particles contain Ca(OH)2 with a mass percentage of 10-99.9% and a moisture content of less than or equal to 20%; and / or The alkaline material includes Mg(OH)2 particles; The Mg(OH)2 particles contain 10-99.9% Mg(OH)2 by mass and have a moisture content of less than or equal to 20%.

21. The liquid cooling system according to any one of claims 18-20, characterized in that, The alkaline material and the adsorbent material are sintered together to form a sintered body; the mass percentage of the alkaline material in the sintered body is 0.5-15%; or The alkaline material and the adsorbent material are each processed into multiple bulk particles; the mass percentage of the alkaline material in the multiple bulk particles is 0.5-15%; or The alkaline material and the adsorbent material are processed into multiple bulk composite particles; the mass percentage of the alkaline material in the composite particles is 0.5-15%.

22. The liquid cooling system according to any one of claims 18-21, characterized in that, The adsorption material includes activated alumina and activated carbon; The mass percentage of the molecular sieve, the alkaline material, the activated alumina and the activated carbon is (40-60):(5-25):(10-30):(5-15).

23. The liquid cooling system according to any one of claims 17-22, characterized in that, The liquid working medium includes fluorinated liquid working medium or silicone oil working medium.

24. An electronic device, characterized in that, The electronic device includes: One or more devices to be cooled; The liquid cooling system as described in any one of claims 17-23; The pump is used to drive a liquid working fluid to circulate between the heat exchange unit and the one or more devices to be cooled, so as to dissipate heat from the one or more devices.

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