Filtering device for immersed cooling system

Abstract

The utility model provides a filter device for an immersed cooling system. The filter device comprises a sealing cover, a detachable filter cartridge, a metal adsorption net and a filter device shell, a hole penetrates through the sealing cover to serve as an oil inlet; the detachable filter cartridge comprises a porous pipeline, an adsorption filter element, an annular filter screen and a porous shell which are distributed layer by layer from inside to outside; one end of the porous pipeline is in butt joint with the oil inlet, and a plurality of through holes are formed in the side wall of the porous pipeline; a plurality of through holes are formed in the side wall of the pored shell, the bottom of the pored shell is closed so as to wrap the pored pipeline, the adsorption filter element and the lower end face of the annular filter screen, and the upper end of the pored shell is detachably connected with the lower end face of the sealing cover; the metal adsorption net wraps the side wall of the porous shell and is adsorbed on the inner wall of the filtering device shell through the magnetism of the metal adsorption net; the upper end face of the filtering device shell is fixedly connected with the sealing cover, and an oil outlet is formed in the lower end of the filtering device shell. According to the device, potential safety hazards caused by oil degradation are effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil filter technical field, concretely is a kind of filter device for immersion cooling system. BACKGROUND

[0002] The particle contamination in the oil (cooling liquid) for immersion cooling refers to the insoluble particle-shaped substances immersed in the oil, such as fibers, metal particles, dust, etc. The sources include the decomposition of the materials used in the body, metal elements and oil tank after long-term operation, the solid particle impurities generated by oil deterioration and the particles in the air. It causes adverse effects such as the decline of electrical properties of the oil for immersion cooling and the accelerated deterioration of the oil.

[0003] During long-term operation, the aging of the oil for immersion cooling is a complex chemical reaction process. The aging products include organic acidic substances such as oxides, alcohols, aldehydes and oxidized polymers. At the same time, the soluble polar impurities, including sol gel impurities, microbial products and plasticizers in insulating rubber products and the main component of insulating paint, alcohol acid gum, can be released and dissolved in the oil, causing oil pollution and increasing the dielectric loss.

[0004] To ensure the cleanliness of the oil for immersion cooling and maintain the normal operation of the system, it is necessary to configure a filter in the oil return system of the immersion cooling to remove the physical particle contamination and chemical aging product contamination in the oil for immersion cooling. However, the single function of the filter, such as the filter that can only filter solid particles and cannot adsorb chemical substances, is not very convenient, and multiple filters need to be configured separately, which is not conducive to system integration and structural optimization.

[0005] The filter device for immersion cooling system provided by the utility model combines the advantages of physical adsorption filter and chemical adsorption filter, solves the problem of providing multiple filtering modes by a single filter through structural innovation and mechanism integration, reduces the number of required filters by half, and reduces the supporting use cost and service support cost. It is especially suitable for long-term use of immersion cooling systems troubled by particle contamination and acidic / polar chemical substances. SUMMARY

[0006] The utility model aims at overcoming the shortcomings of the existing filter device for immersion cooling system, and provides a filter device for immersion cooling system to solve the problem that the existing device is not equipped with a filter device integrated with physical-chemical adsorption, which cannot provide long-term and efficient cleaning and maintenance for the oil for immersion cooling in the immersion cooling system.

[0007] The purpose of the utility model can be achieved by the following scheme:

[0008] A filter device for an immersion cooling system, which is connected to a circulating pipeline of a cooling liquid in the immersion cooling system, the filter device comprising a sealing cover, a detachable filter cartridge, a metal adsorption net and a filter device shell;

[0009] The sealing cover penetrates a hole as an oil inlet and is connected to an outlet of the circulating pipeline of the cooling liquid in the immersion cooling system.

[0010] The detachable filter cartridge comprises a perforated pipe, an adsorption filter core, an annular filter screen and a perforated shell which are distributed layer by layer from inside to outside; one end of the perforated pipe is connected to the oil inlet, the side wall of the perforated pipe is provided with a plurality of through holes for the cooling liquid to flow into the adsorption filter core, the side wall of the perforated shell is provided with a plurality of through holes, the bottom of the perforated shell is closed to wrap the lower end surface of the perforated pipe, the adsorption filter core and the annular filter screen, and the upper end of the perforated shell is detachably connected to the lower end surface of the sealing cover.

[0011] The metal adsorption net is wrapped on the side wall of the perforated shell and is magnetically adsorbed on the inner wall of the filter device shell through the magnetic property of the metal adsorption net, so that the metal adsorption net is easily detachable for cleaning and replacement.

[0012] The upper end surface of the filter device shell is fixedly connected to the sealing cover, and the lower end of the filter device shell is provided with an oil outlet for the filtered cooling liquid to flow back into the circulating pipeline of the cooling liquid in the immersion cooling system.

[0013] Further, the adsorption filter core comprises a granular adsorbent and a mesh wrapping the granular adsorbent, the mesh has a pore size smaller than the particle size of the adsorbent particles, and is used to prevent the adsorbent from spilling into the annular filter screen or the perforated pipe to cause blockage.

[0014] Further, the granular adsorbent is one or more of silica gel, activated alumina or granular white clay, and is preferably granular white clay.

[0015] Further, the detachable connection is achieved by thread connection, the lower end of the hole of the sealing cover is provided with a protrusion, and the protrusion and the side wall of the perforated shell are both provided with threads for thread connection of the protrusion and the perforated shell, and preferably, the outer side wall of the protrusion and the inner side wall of the perforated shell are both provided with threads.

[0016] Further, the top end of the filter device shell is fixedly connected to the sealing cover by a fastening bolt, and the oil outlet is in the form of a funnel to facilitate collection of the filtered cooling liquid.

[0017] Further, a sealing gasket is arranged at the connection between the sealing cover and the filter device shell, the sealing gasket is made of elastic material which passes the oil compatibility test, and sealing of the connection between the sealing cover and the filter device shell is realized.

[0018] Further, the sealing gasket is made of one of fluororubber, silicone rubber and polytetrafluoroethylene, and is preferably made of polytetrafluoroethylene.

[0019] Further, the annular filter screen is of a multi-layer structure, and the pore size of each layer of the filter screen decreases from the inside to the outside, and is used for filtering particulate impurities.

[0020] Compared with the prior art, the utility model has the advantages and positive effects that:

[0021] In view of the special use scene and material characteristics of the oil for immersion cooling, and considering various influencing factors of oil aging during long-term use, a filter system with physical filtering and chemical adsorption is designed. The oil aging products are treated by the adsorption filter element, the particulate impurities are cleaned by the annular filter screen, the small metal particles are cleaned by the metal adsorption net, and the filter device is realized sustainable use by the design of the detachable filter cartridge. The metal adsorption net is magnetically adsorbed, so that it is easy to detach, and is convenient to clean and replace. The filter device effectively avoids the safety hidden trouble caused by oil deterioration. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a cross-sectional view of the filter device of an embodiment of the utility model;

[0023] Figure 2 is a cross-sectional view of the filter device of an embodiment of the utility model;

[0024] Figure 3 is a whole schematic view of the filter device of an embodiment of the utility model;

[0025] In the drawing: 1, oil inlet; 2, sealing cover; 3, detachable filter cartridge; 4, filter device shell; 5, metal adsorption net; 6, annular filter screen; 7, adsorption filter element; 8, oil outlet; 9, perforated pipeline; 10, perforated shell; 11, fastening bolt. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model.

[0027] On the contrary, the utility model covers any by the claim defined in the essence and scope of the utility model of the alternative, modification, equivalent method and scheme. Further, in order to make the public have better understanding to the utility model, in the following detailed description of the utility model of the utility model, some specific details are described in detail. The utility model can also be completely understood without the description of these details for those skilled in the art. According to one specific example of the utility model, a filter device for immersion cooling system is connected in the circulating pipeline of cooling liquid in immersion cooling system, and the filter device comprises: a sealing cover 2, a detachable filter cartridge 3, a metal adsorption net 5 and a filter device shell 4;The sealing cover 2 is penetrated by a hole in the center as an oil inlet, and is connected with the pipeline of immersion cooling system;The detachable filter cartridge 3 comprises a perforated pipe 9, an adsorption filter core 7, an annular filter screen 6 and a perforated shell 10 distributed layer by layer from inside to outside;One end of the perforated pipe 9 is connected with the oil inlet, and the side wall of the perforated pipe 9 is provided with a plurality of through holes for the cooling liquid to flow into the adsorption filter core 7;The perforated shell 10 is provided with a plurality of through holes in the side wall, and the bottom of the perforated shell 10 is closed to wrap the lower end surface of the perforated pipe 9, the adsorption filter core 7 and the annular filter screen 6, and the upper end of the perforated shell 10 is detachably connected with the lower end surface of the sealing cover 2;The metal adsorption net 5 is wrapped on the side wall of the perforated shell 10 and is adsorbed on the inner wall of the filter device shell 4 by the magnetic property of the metal adsorption net 5 itself;The upper end surface of the filter device shell 4 is fixedly connected with the sealing cover 2, and the lower end of the filter device shell 4 is provided with an oil outlet 8 for the cooling liquid to flow into the circulating pipeline of cooling liquid in immersion cooling system again.

[0028] Embodiment 1:

[0029] As Figure 1 And Figure 3 The device is connected in the pipeline of immersion cooling system, and the filter device comprises: a sealing cover 2, a detachable filter cartridge 3, a metal adsorption net 5 and a filter device shell 4;The sealing cover 2 is penetrated by a hole as an oil inlet, and is connected with the pipeline of immersion cooling system, so that the cooling liquid to be filtered enters the device from the oil inlet in the pipeline;

[0030] As Figure 2 The detachable filter cartridge 3 comprises a perforated pipe 9, an adsorption filter core 7, an annular filter screen 6 and a perforated shell 10 distributed layer by layer from inside to outside; Figure 1, one end of the perforated pipe 9 is connected with the oil inlet, the side wall of the perforated pipe 9 is provided with a plurality of through holes for the cooling liquid to flow into the adsorption filter core 7; the adsorption filter core 7 comprises granular adsorbent and a grid wrapping the granular adsorbent, the grid has a pore size smaller than the particle size of the adsorbent, preventing the adsorbent from spilling into the annular filter screen 6 or the perforated pipe 9 to cause blockage, the granular adsorbent is one or more of silica gel, activated alumina or granular white clay, and in this embodiment, the granular white clay is selected as the adsorbent; the annular filter screen 6 has a three-layer structure and is composed of three layers of filter screens, the pore size of each layer of filter screen decreases from inside to outside, and the farther away from the perforated pipe 9, the smaller the pore size; the perforated shell 10 is provided with a plurality of through holes in the side wall, and the bottom of the perforated shell 10 is closed to wrap the lower end surface of the perforated pipe 9, the adsorption filter core 7 and the annular filter screen 6, and the upper end of the perforated shell 10 is detachably connected with the lower end surface of the sealing cover 2. Figure 1 and Figure 3 The detachable connection is specifically achieved by threaded connection, the outer edge of the hole of the sealing cover 2 at the lower end is provided with a protrusion, the outer side wall of the protrusion is provided with threads, and the inner side wall of the perforated shell 10 is provided with threads for threaded connection of the protrusion and the perforated shell 10.

[0031] The metal adsorption net 5 is wrapped on the outer side wall of the perforated shell 10 and is adsorbed on the inner wall of the filter device shell 4 by the magnetism of the metal adsorption net 5 itself;

[0032] The upper end surface of the filter device shell 4 is fixedly connected with the sealing cover 2, specifically, the top end of the filter device shell 4 is fixedly connected with the sealing cover 2 by the fastening bolt 11, and a sealing gasket is arranged at the connection between the sealing cover 2 and the filter device shell 4, the sealing gasket is made of an elastic material that passes the oil product compatibility test, and the sealing gasket material is one of fluororubber, silicone rubber and polytetrafluoroethylene, and in this embodiment, the polytetrafluoroethylene is selected as the sealing gasket material, and the lower end of the filter device shell 4 is provided with the oil outlet 8 in the form of a funnel structure to facilitate collection of the filtered cooling liquid and make the filtered cooling liquid flow into the circulating pipeline of the cooling liquid in the immersed cooling system again.

[0033] Working principle:

[0034] The oil inlet 1 is connected with the outlet of the circulating pipeline of the cooling liquid in the immersion cooling system. The cooling liquid to be filtered is injected into the adsorption filter core 7 through the through hole of the perforated pipeline 9 through the oil inlet 1, and the chemical substances in the cooling liquid to be filtered are subjected to percolation regeneration treatment. Then, the cooling liquid passes through the annular filter screen 6, and the particle impurities in the cooling liquid are filtered through the gradually reduced pore size of the annular filter screen 6. Then, the filtered cooling liquid flows out of the detachable filter cartridge 3 along the through hole of the perforated shell 10, reaches the metal adsorption net 5, and removes the small metal particles in the cooling liquid to be filtered through the magnetic adsorption of the metal adsorption net 5 itself. Finally, the filtered cooling liquid is collected at the oil outlet 8 in the funnel-shaped structure under the action of gravity, the oil outlet 8 is connected with the circulating pipeline of the cooling liquid in the immersion cooling system, so that the filtered cooling liquid leaves the filtering device and returns to the circulating pipeline of the cooling liquid in the immersion cooling system.

Claims

1. A filter device for use in an immersion cooling system, for insertion into a circulation line of a cooling liquid in the immersion cooling system, characterized in that The filter device comprises a sealing cover (2), a detachable filter cartridge (3), a metal adsorption net (5) and a filter device shell (4); The sealing cover (2) penetrates a hole as an oil inlet (1) and is connected with a liquid outlet of a circulating pipeline of a cooling liquid in the immersion cooling system; The detachable filter cartridge (3) comprises a perforated pipe (9), an adsorption filter core (7), an annular filter screen (6) and a perforated shell (10) distributed layer by layer from inside to outside; one end of the perforated pipe (9) is connected with the oil inlet (1); the side wall of the perforated pipe (9) is provided with a plurality of through holes for the cooling liquid to flow into the adsorption filter core (7); the side wall of the perforated shell (10) is provided with a plurality of through holes; the bottom of the perforated shell (10) is closed to wrap the lower end surface of the perforated pipe (9), the adsorption filter core (7) and the annular filter screen (6); the upper end of the perforated shell (10) is detachably connected with the lower end surface of the sealing cover (2); The metal adsorption net (5) is wrapped on the side wall of the perforated shell (10) and is adsorbed on the inner wall of the filter device shell (4) by the magnetic property of the metal adsorption net (5) itself; The upper end surface of the filter device shell (4) is fixedly connected with the sealing cover (2); the lower end of the filter device shell (4) is provided with an oil outlet (8) for the filtered cooling liquid to flow back into the circulating pipeline of the cooling liquid in the immersion cooling system.

2. A filter device for an immersion cooling system according to claim 1, characterized in that The adsorption filter core (7) comprises a granular adsorbent and a grid wrapping the granular adsorbent; the pore size of the grid is smaller than the particle size of the adsorbent.

3. A filter device for an immersion cooling system according to claim 2, characterised in that, The granular adsorbent is one or more of silica gel, activated alumina or granular white clay.

4. The filtration device for a submersion cooling system of claim 1, wherein, The detachable connection is achieved by thread connection; the lower end of the hole of the sealing cover (2) is provided with a protrusion; the protrusion and the side wall of the perforated shell (10) are both provided with threads for thread connection of the protrusion and the perforated shell (10).

5. The filtration device for a submersion cooling system of claim 1, wherein, The top end of the filter device shell (4) is fixedly connected with the sealing cover (2) by a fastening bolt (11); the oil outlet (8) is in a funnel structure to facilitate collection of the filtered cooling liquid.

6. The filtration device for a submersion cooling system of claim 1, wherein, A sealing gasket is arranged at the connection between the sealing cover (2) and the filter device shell (4); the sealing gasket is made of an elastic material which passes the oil product compatibility test.

7. A filtration device for a submersion cooling system according to claim 6, wherein, The material of the sealing gasket is one of fluororubber, silicone rubber and polytetrafluoroethylene.

8. The filtration device for a submersion cooling system of claim 1, wherein, The annular filter screen (6) is a multi-layer structure; the pore size of each layer of filter screen decreases layer by layer from inside to outside.

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