CN114286604B

CN114286604B - Novel liquid cooling system

Info

Publication number: CN114286604B
Application number: CN202111649765.4A
Authority: CN
Inventors: 白瑞晨; 林子杰
Original assignee: Lanyang Ningbo Technology Co ltd
Current assignee: Lanyang Ningbo Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2023-03-31
Anticipated expiration: 2041-12-30
Also published as: CN114286604A

Abstract

The invention provides a novel liquid cooling heat dissipation system, which comprises a cavity, a power circulation mechanism and heat exchange equipment, wherein the power circulation mechanism comprises a power supply, a heat exchange device and a heat exchange device; the heat conduction liquid and the electronic component which is immersed in the heat conduction liquid and exchanges heat with the heat conduction liquid for cooling are arranged in the cavity. The heat conduction liquid in the cavity flows back into the cavity through the heat exchange equipment and the jet mechanism through the power circulation mechanism, wherein the heat exchange equipment is used for carrying out heat exchange cooling on the heat conduction liquid conveyed by the heat exchange equipment, and the jet mechanism is used for spraying the heat conduction liquid in the cavity after heat exchange cooling to accelerate the liquidity of the liquid. According to the novel liquid-cooling heat dissipation system, the jet mechanism is used for jetting the heat conduction liquid towards the heat conduction liquid of the cavity, so that the flowing effect of the heat conduction liquid of the cavity is improved, and the heat exchange effect of the liquid-cooling heat dissipation system on electronic components is enhanced.

Description

Novel liquid cooling system

Technical Field

The invention relates to a cooling system, in particular to a novel liquid cooling heat dissipation system.

Background

With the rapid development of mobile data, cloud computing and big data services, the heat dissipation capacity of the server is higher and higher, and the requirement on the heat dissipation of the data center is higher and higher; in recent years, many new heat dissipation technologies have appeared, and the generation of a direct immersion type liquid cooling server adopting an electronic refrigerant technology is undoubtedly a breakthrough in heat dissipation of a data center server, and the direct immersion type liquid cooling server has the advantages of high availability, high density, ultra-low PUE and the like. Conventional liquid cooling techniques include immersion heat removal systems.

The immersion heat dissipation system comprises a cooling heat dissipation cavity and an electronic component, wherein heat conducting liquid is arranged in the cavity, the electronic component is immersed in the heat conducting liquid, a power circulation mechanism and a heat exchange mechanism are arranged outside the cavity, and the circulation flow of the heat conducting liquid is controlled through the power circulation mechanism. This structure has one drawback: the liquid mobility inside the cavity is poor, and the cooled heat-conducting liquid cannot be fully fused with the heat-conducting liquid inside the cavity, so that the heat exchange effect of the heat-conducting liquid on electronic components is reduced.

Disclosure of Invention

【1】 Technical problem to be solved

The invention aims to solve the technical problem of poor heat exchange effect on electronic components caused by poor fluidity of a heat-conducting liquid in the traditional technology.

【100】 Technical scheme for solving problems

A novel liquid cooling heat dissipation system comprises a cavity 100, a power circulation mechanism 31 and a heat exchange device 32; the cavity 100 is internally provided with heat-conducting liquid 6 and an electronic component 2 which is immersed in the heat-conducting liquid 6 and exchanges heat with the heat-conducting liquid 6 for cooling; the heat conduction liquid 6 in the cavity flows back into the cavity through the heat exchange device 32 and the jet mechanism 4 through the power circulation mechanism 31, wherein the heat exchange device 32 is used for carrying out heat exchange cooling on the heat conduction liquid 6 conveyed by the heat exchange device, and the jet mechanism 4 is used for spraying the heat conduction liquid 6 subjected to heat exchange cooling on the heat conduction liquid 6 in the cavity 100 to accelerate the liquid fluidity.

Further, the fluidic mechanism 4 is immersed in the heat transfer liquid 6 in the chamber 100 or disposed above the heat transfer liquid 6.

Further, the jet mechanism 4 is a nozzle, and the nozzle includes a plurality of nozzles 6 for pressurizing the heat transfer liquid 6.

Further, the spraying direction of the spray head is vertical or inclined.

Further, the chamber 100 includes a liquid outlet 21, and when the spraying direction of the spray head 6 is inclined, the liquid outlet 21 is located at one side of the spraying direction of the spray head 6.

Further, the heat-conducting liquid 6 after heat exchange and cooling is sprayed by the jet mechanism 4 to generate a liquid turbulence phenomenon on the heat-conducting liquid 6 in the cavity 100.

Further, the jet mechanism 4 can realize intermittent jet.

Further, the jet mechanism 4 includes a housing, at least two flow channels 460 for allowing the heat conducting liquid to flow through are disposed in the housing, a plurality of liquid outlet holes 461 respectively communicated with the two flow channels are disposed on the bottom surface of the housing, and a blocking mechanism for enabling the flow channels to be intermittently communicated so as to enable the liquid outlet holes 461 to be intermittently sprayed is disposed in the housing.

Further, the blocking mechanism comprises flexible conduits 62b, pressing blocks 54 and a cam 52, wherein at least two of the flexible conduits 62b are respectively communicated with the flow channel, the pressing blocks 54 are slidably arranged in the shell and move in the direction close to or far away from the flexible conduits 62b, and an elastic component which enables the pressing blocks 54 to have the movement tendency of being opposite to the flexible conduits is arranged in the shell; the cam 52 is connected to a power mechanism and can push the pressing block 54 toward the flexible conduit 62b and block the flexible conduit 62b.

Further, when the cam rotates, at least one flexible conduit is in a blocking state and at least one flexible conduit is in a passage state.

Furthermore, a first working cavity 4410 with a circular cross section is arranged in the shell, a liquid inlet hole 4420 and a liquid outlet hole 4431 are arranged on the side wall of the first working cavity, the liquid inlet hole 4420 is used as an input port to be communicated with the outlet end of the circulating pipeline, the liquid outlet hole 4431 is respectively communicated with the flow channel through at least two pipelines, and the flexible guide pipe is arranged on the pipeline; an impeller 51 driven by heat-conducting liquid is rotatably mounted in the first working chamber 4410, and the cam 52 is rigidly connected to the impeller 51 through a main shaft 522 and can rotate synchronously with the impeller 51.

Further, a main pipe 61 is connected to the liquid outlet hole 4431, the main pipe 61 is branched into at least two branches 62 respectively communicated with the flow channel, and a flexible conduit 62b is arranged on each branch 62 and located on a movement path of the pressing block.

Further, the blocking mechanism further comprises a mounting seat, the mounting seat comprises a mounting seat body 53 which is integrally a cuboid, a mounting hole 533 is formed in the mounting seat body 53, a pipeline hole 530 penetrates through two ends of the mounting seat body 53, a sliding hole 531 communicated with the pipeline hole 530 is formed in the front end of the mounting seat body 53, the axis of the sliding hole 531 is perpendicular to the rotation axis of the cam 52, the pressing block 54 is slidably arranged in the sliding hole 531, the sliding direction of the pressing block 54 is perpendicular to the length direction of the pipeline hole 530, and the pressing block 54 can extrude a flexible pipe sleeved in the pipeline hole 530 to be blocked when sliding back to the cam.

Further, the slide hole includes a main hole and auxiliary holes 532 disposed at both sides of the main hole, the main hole communicates with the pipe hole 530, the auxiliary holes 532 communicate with the main hole, and a first step surface 532a is formed at the bottom surface of the auxiliary holes 532; the pressing block comprises a pressing block body 542 capable of being inserted into the main hole and limiting blocks 543 arranged on two sides of the pressing block body 542 and capable of being inserted into the auxiliary holes, a second step surface 543a is formed at the end of each limiting block 543, and an elastic component enabling the pressing block to move back to the pipeline hole 530 is arranged between the first step surface 532a and the second step surface 543 a; the head of the pressing block body 542 is provided with an extrusion part 542a which can be inserted into the pipeline hole and used for extruding the flexible pipeline, and the tail of the pressing block body 542 is provided with a push plate 541 which is used for contacting with the cam.

Furthermore, the cross section of the extrusion part is triangular, and the end part of the extrusion part is provided with a fillet to form an extrusion surface.

Further, a spring hole is formed in each of the first step surface 532a and the second step surface 543a, and the elastic component is a spring and the end portion of the elastic component is sleeved in the spring hole.

Furthermore, a pin hole 5310 communicated with the main hole is formed in the mounting seat, a strip-shaped sliding groove 5420 is formed in the side wall of the pressing block, the length direction of the strip-shaped sliding groove 5420 is parallel to the sliding direction of the pressing block, and a pin penetrates through the pin hole 5310 and then extends into the strip-shaped sliding groove 5420 to limit the movement stroke of the pressing block 54.

Further, the cam 52 comprises a cam body 521 and a main shaft 522 fixed at the center of the cam body, and a key for connecting with an impeller is arranged on the side wall of the main shaft 522; the side wall of the cam body 521 is circumferentially and uniformly provided with N first working surfaces 521a, wherein N is an odd number greater than or equal to 3, each first working surface 521 is an arc surface coaxial with the main shaft 522, a second working surface 521b is connected between every two adjacent first working surfaces 521a, the working radius of the second working surface 521b is smaller than that of the first working surface 521a, and when the cam rotates, the first working surfaces 521a and the second working surfaces 521b are staggered to contact with the pressing block and push the pressing block to slide back and forth.

Further, the central angle α of the first working surface 521a is smaller than or equal to the central angle β of the second working surface 521b, and n × α + (n + 1) × β =180 °, where n is a natural number equal to or greater than 1.

Furthermore, the rear end of the pressing block is provided with a roller which is used for contacting with the side wall of the cam.

Further, be equipped with nozzle 62 on liquid outlet 461, be equipped with on nozzle 62 with the coaxial and the hydrojet hole 620 that communicates of liquid outlet 461 is gone out, hydrojet hole 620 is including the first hydrojet hole 6201 and the second hydrojet hole 6202 that from top to bottom set gradually, the diameter of second hydrojet hole 6202 is greater than the diameter of first hydrojet hole 6201, the lateral wall upper end slope of second hydrojet hole 6202 is provided with inlet port 621, the lower extreme center of second outage 620 is equipped with water conservancy diversion piece 624, the top surface of water conservancy diversion piece 624 is the conical surface, water conservancy diversion piece 624 lateral wall with be connected with flow distribution plate 623 between the second hydrojet hole 6202 inner wall, flow distribution plate 623 is three and circumference equipartition at least.

Further, the bottom of the shell is provided with an installation part corresponding to the liquid outlet hole, the installation part is annular and coaxial with the liquid outlet hole 461, and the installation part is provided with an external thread; the nozzle overcoat is equipped with a lid 61, lid 61 passes through threaded connection on the installation department, the bottom surface of lid is equipped with the opening, be equipped with in the lid with the bearing surface of nozzle lateral wall contact, the lateral wall of nozzle is equipped with the air flue 622 with the gas pocket intercommunication, the air flue runs through downwards extremely outside the nozzle.

Further, liquid outlet 461 is a stepped hole with a small upper end and a large lower end, the upper end of the nozzle is sleeved in the large hole of the stepped hole, and a sealing gasket is arranged between the stepped surface of the stepped hole and the top surface of the nozzle.

【31】 Advantageous effects

The novel liquid cooling heat dissipation system has the following effects:

1. the jet mechanism sprays heat-conducting liquid towards the heat-conducting liquid of the cavity to generate a liquid turbulence phenomenon to the heat-conducting liquid of the cavity, so that the flowing effect of the heat-conducting liquid in the cavity is improved, namely, the flowing of heat in the heat-conducting liquid is accelerated, and the heat exchange effect of the liquid cooling heat dissipation system on electronic components is enhanced.

2. The jet mechanism is located the heat conduction liquid top in the cavity, and the heat conduction liquid after the heat transfer contacts with the air earlier, consequently can this heat conduction liquid realize cooling once more to further improve the radiating effect of heat conduction liquid to the electrical part.

3. When the spraying direction of shower nozzle is the slope, go out the liquid hole and be located one side of shower nozzle spraying direction, thereby the thermal flow efficiency of heat in the heat conduction liquid can be improved to the heat conduction liquid that makes after the heat transfer can dip into more fast.

4. The staggered intermittent cooling injection technology is adopted, intermittent contact is generated on the liquid level or a host, the turbulence of the cooling liquid in the cavity is enhanced, the cooling effect is improved, the demand of the cooling liquid in unit time is reduced, the overall cooling liquid usage of the system is reduced, and the energy consumption is low.

5. The impeller driving cam is arranged and is pushed by the internal pressure of the cooling liquid, and the impeller driving cam is of a pure mechanical structure, has no electric element, and is good in stability and high in reliability; and the structure is compact, and the occupied space is small.

6. The symmetrical double-pressure-block assembly is adopted, so that the integral balance force during working is improved, and vibration and noise are avoided; the single cam drives the two pressing blocks to generate staggered extrusion and form intermittent staggered jet flow, the driving is convenient and stable, the jet frequency can be realized through the flow rate of the cooling liquid (regulated by a pump), and the regulation is simple.

7. The installation seat is arranged to fix the branch pipe (flexible pipe), the track of the pressing block is limited, extrusion deflection is avoided, the extrusion precision and reliability of the pressing block to the flexible pipe are improved, and then the spraying and cooling liquid effects of cooling liquid are improved.

8. Set up the pin on the mount pad for carry out the stroke spacing to the briquetting, improved the operating stability and the reliability of briquetting, avoid moving the stroke and influence and block and communicate the effect, damage flexible conduit even.

9. The split type shell structure is simple in production process, greatly reduces production cost and improves overall precision.

10. The cam adopts odd first working surfaces, so that two symmetrically arranged branch pipes generate staggered blocking, and the cam has compact structure, simple assembly and good balance; and the central angles of the two working surfaces of the cam are reset, so that short-time overlapping can be generated during intermittent double-pipeline jet flow, fluid in the main pipe can continuously flow, the operation reliability is improved, the influence of cutoff on the driving performance of the impeller to influence the rotation of the cam is avoided, and the reliability and the stability of the integral operation of the cam are improved.

11. The diameter difference of the nozzle spray holes is set, and a flow guide and flow distribution structure is arranged, so that the cooling liquid is sprayed out in a diffused manner, the coverage area of the cooling liquid is increased, and the cold cooling and heat dissipation effect is improved; set up the inlet port on liquid hole is gone out to the nozzle, the fluid flows and forms the negative pressure to the inlet port, introduce the air outside the nozzle to the second hydrojet downthehole, make the air sneak into in the coolant liquid, it enables the gentle slow of spun coolant liquid, the velocity of flow reduction, the impact force is little, the work noise is low, save the coolant liquid quantity, the power consumption is low, can not produce when getting into the cooling chamber and splash, and simultaneously, can admit air the cooling to the air of coolant liquid intracavity, absorb the heat in the host computer gived off the cooling chamber air, realize two heat absorption cooling, the cooling effect is greatly improved.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a novel liquid-cooled heat dissipation system according to the present invention;

fig. 2 is a schematic structural diagram of a second embodiment of the novel liquid-cooled heat dissipation system of the present invention;

fig. 3 is a schematic structural diagram of a jet mechanism of the novel liquid-cooled heat dissipation system of the present invention;

fig. 4 is another schematic structural view of the jet mechanism of the novel liquid-cooled heat dissipation system according to the present invention;

fig. 5 is an exploded view of the jet mechanism of the liquid cooling heat dissipation system of the present invention;

FIG. 6 is a schematic view of an impeller of the novel liquid cooling heat dissipation system according to the present invention;

fig. 7 is a cross-sectional view of a first working chamber of the novel liquid-cooled heat dissipation system of the present invention;

fig. 8 is a schematic structural diagram of a blocking mechanism of the novel liquid-cooled heat dissipation system according to the present invention;

FIG. 9 is a top view of the blocking mechanism of the novel liquid-cooled heat dissipation system of the present invention;

fig. 10 is a cross-sectional view of a blocking mechanism of the novel liquid-cooled heat dissipation system of the present invention;

fig. 11 is a schematic structural view of a cam of the novel liquid cooling heat dissipation system of the present invention;

FIG. 12 is a schematic view of the assembly of the pressing block of the novel liquid-cooled heat dissipation system of the present invention;

FIG. 13 is a cross-sectional view of a press block of the novel liquid-cooled heat dissipation system of the present invention;

fig. 14 is a schematic structural diagram of a mounting base of the novel liquid-cooled heat dissipation system of the present invention;

fig. 15 is a cross-sectional view of a mounting base of the novel liquid-cooled heat dissipation system of the present invention;

fig. 16 is a schematic structural diagram of a pressing block of the novel liquid-cooled heat dissipation system of the present invention;

fig. 17 is another schematic view of an angle structure of a pressing block of the liquid-cooled heat dissipation system of the present invention;

fig. 18 is a schematic structural view of a flow channel of the novel liquid-cooled heat dissipation system of the present invention;

fig. 19 is a schematic structural view of a liquid outlet of the novel liquid-cooled heat dissipation system of the present invention;

FIG. 20 is a schematic view of the nozzle assembly of the novel liquid-cooled heat dissipation system of the present invention;

fig. 21 is a schematic structural diagram of a nozzle of the novel liquid-cooled heat dissipation system of the present invention.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the accompanying drawings.

The first embodiment is as follows: referring to fig. 1, a novel liquid cooling heat dissipation system includes a chamber 100, a power circulation mechanism 31 and a heat exchange device. The cavity 100 is provided with a heat-conducting liquid 6 and an electronic component 2 immersed in the heat-conducting liquid 6 for heat exchange and cooling, and the electronic component 2 comprises electronic components such as a main board, a chip or a display card. The inside of the cavity is also provided with a jet mechanism 4 with a pressurizing function, the jet mechanism 4 is a nozzle, and the spraying direction of the nozzle 6 is inclined. The bottom of the cavity 100 includes a liquid outlet, wherein the liquid inlet is communicated with the jet mechanism 4, and the liquid outlet, the power circulation mechanism, the heat exchange device and the jet mechanism 4 are communicated. The heat exchange equipment is a cold row or other heat exchange structures, and the power circulation mechanism is a water pump.

The working process is as follows: after the heat-conducting liquid 6 in the cavity exchanges heat with the electronic component 2 and is heated, the power circulation mechanism 31 is used for sending the heat-conducting liquid 6 to the heat exchange equipment for heat exchange and cooling and then sending the heat-conducting liquid to the jet mechanism 4, and meanwhile, the jet mechanism 4 sprays the heat-conducting liquid 6 after heat exchange and cooling to the heat-conducting liquid 6 in the cavity so as to flow back into the cavity. The jet mechanism 4 is used for spraying the heat-conducting liquid 6 subjected to heat exchange cooling to the heat-conducting liquid 6 in the cavity 100, so that a liquid turbulence phenomenon is generated, the mobility of the heat-conducting liquid 6 in the cavity 100 is accelerated, the mobility of the heat-conducting liquid 6 is improved, namely, the heat in the heat-conducting liquid 6 flows, and the heat exchange effect of the heat-conducting liquid 6 on the electronic component 2 is improved.

The jet mechanism 4 is immersed in the heat conducting liquid 6 in the cavity 100 or is arranged above the heat conducting liquid 6, in the figure, the jet mechanism 4 is positioned above the heat conducting liquid 6, so that the heat conducting liquid after heat exchange is firstly contacted with air, and the heat conducting liquid can be cooled again, thereby further improving the heat dissipation effect of the heat conducting liquid on the electric device.

The jet mechanism 4 is a nozzle, and the nozzle includes a plurality of nozzles 6 for pressurizing the heat-conducting liquid 6.

When the injection direction of shower nozzle 6 is the slope, go out liquid hole 21 and be located one side of shower nozzle 6 injection direction, thereby make thereby the thermal flow efficiency of heat in the heat-conducting liquid can be improved to the heat-conducting liquid that makes after the heat transfer can immerse more fast.

The second embodiment: as shown in fig. 2, the present embodiment has the same structure as the first embodiment except that the head is vertically ejected toward the electronic component 2.

Meanwhile, the jet mechanism in the invention is also used as an innovation point, and the structure and the jet form of the jet mechanism are redesigned, so that the system greatly improves the heat dissipation and cooling effects; the structure of the fluidic mechanism is described in detail with reference to fig. 3-21.

In the present application, the fluidic mechanism 4 can realize discontinuous jet, that is, the cooling liquid ejected by the fluidic mechanism 4 is discontinuous.

Specifically, the jet mechanism 4 includes a housing, the housing is a cuboid, the thickness (height) of the housing is small, the housing is plate-shaped, at least two flow channels 460 for heat transfer fluid to flow through are arranged in the housing, the number of the flow channels is adjusted according to the size of the cooling cavity, when the area (volume) to be cooled is large, the number of the flow channels is large, and when the area (volume) to be cooled is small, the number of the flow channels is small; in order to improve the balance force, in the embodiment, the number of the flow channels is even, the even number of the flow channels are equally divided into two liquid outlet units, and the two liquid outlet units adopt staggered intermittent jet flow, that is, when one liquid outlet unit is blocked, the other liquid outlet unit is in a communicated liquid outlet state.

Be equipped with a plurality of liquid holes 461 with the play liquid hole of two runners intercommunication respectively in the bottom surface of casing, a plurality of liquid holes 461 have all been seted up to the bottom of every runner promptly, go out liquid hole 461 and be used for discharging the coolant liquid in runner (play liquid unit) to the cooling intracavity of placing the host computer, and then realize the cooling.

In order to realize the intermittent liquid spraying of the liquid outlet, in this embodiment, a blocking mechanism for realizing intermittent communication of the flow channel so as to realize the intermittent liquid spraying of the liquid outlet 461 is disposed in the housing.

The blocking mechanism comprises flexible guide pipes 62b, a pressing block 54 and a cam 52, wherein at least two flexible guide pipes 62b are respectively communicated with the flow channel, the pressing block 54 is arranged in the shell in a sliding mode and moves along the direction close to or far away from the flexible guide pipes 62b, and meanwhile an elastic component is arranged in the shell and enables the pressing block 54 to have the movement tendency of being opposite to the flexible guide pipes even if the pressing block is far away from the flexible guide pipes and is close to the cam; the cam 52 is connected with a power mechanism and used for driving the cam to rotate and pushing the pressing block 54 to approach the flexible conduit 62b and block the flexible conduit 62b; and when the cam rotates, at least one flexible conduit is in a blocking state, and at the same time, at least one flexible conduit is in a passage state.

Referring to fig. 5-7, a first working chamber 4410 is provided in the housing, the axis of the first working chamber 4410 is perpendicular to the top surface (bottom surface) of the housing, and the cross section of the first working chamber is circular, in this embodiment, a circular protrusion 441 is provided on the top of the housing, the first working chamber 4410 is provided in the circular protrusion 441, the whole of which is cylindrical, a liquid inlet hole 4420 and a liquid outlet hole 4430 are provided on the side wall of the first working chamber, specifically, a liquid inlet pipe 442 is provided on the side wall of the circular protrusion, and the axis of the liquid inlet pipe 442 is tangential to the circular protrusion; a liquid outlet pipe 443 is arranged on the other side of the circular protrusion, the axis of the liquid outlet pipe is perpendicular to and intersected with the axis of the first working cavity and is parallel to the liquid inlet pipe, a liquid outlet hole 4430 is formed in the liquid outlet pipe 443, the liquid outlet hole 4430 is communicated with the flexible pipe through an intermediate flow channel 4431, in the embodiment, the liquid inlet pipe and the liquid outlet pipe are U-shaped and are integrally formed with the shell; the liquid inlet hole 4420 is used as an input port and is communicated with the outlet end of a circulating pipeline (a pipeline connected with a pump and heat exchange equipment), the liquid outlet hole 4430 is respectively communicated with a flow channel through at least two pipelines, and a flexible guide pipe is arranged on the pipeline; an impeller 51 is rotatably installed in the first working chamber 4410, the axis of the impeller 51 is coaxial with the first working chamber, blades are uniformly distributed on the side wall of the impeller in the circumferential direction, the number of the blades is greater than or equal to 6, and the distance between the blades and the inner wall of the first working chamber is small, so that the driving force of cooling liquid entering the liquid inlet hole can be improved, and the phenomenon that the cooling liquid enters the liquid outlet hole through a gap is reduced; a liquid conveying cavity is formed between every two adjacent blades, cooling liquid enters the liquid conveying cavity communicated with the liquid conveying cavity from the liquid inlet hole, the impeller is pushed to rotate by the thrust generated by the cooling liquid, the impeller rotates to drive the liquid conveying cavity to rotate towards the liquid outlet hole, and when the impeller rotates to be communicated with the liquid outlet hole, the cooling liquid in the liquid conveying cavity enters the liquid outlet hole under the action of pressure; the coolant enters the first working chamber after being pressurized by the pump, and drives the impeller 51 to rotate, the impeller serves as a power input end of the cam and is connected with the cam 52 for driving the cam to rotate, and specifically, the cam 52 is rigidly connected with the impeller 51 through the main shaft 522 and can rotate synchronously with the impeller 51.

Referring to fig. 8-10, a second working chamber 450 is formed in the housing, and the cam 52, the pressing block 54 and the flexible conduit are installed in the second working chamber 450, specifically, a middle flow channel communicated with the liquid outlet hole is formed on the top surface of the second working chamber, a main pipe 61 is connected to the middle flow channel, the main pipe 61 is branched into at least two branches 62 respectively communicated with the flow channel, in this embodiment, two branches are provided, the two branches are arranged in parallel, the length direction of the two branches is parallel to the length direction of the housing and symmetrically arranged on both sides of the cam, the flexible conduit 62b is arranged on the branch 62, and the flexible conduit 62b is located on the movement path of the pressing block.

Referring to fig. 12-15, in order to improve the stability and reliability of operation, the blocking mechanism in this embodiment further includes a mounting base, the mounting base includes a mounting base body 53, the mounting base body 53 is a rectangular parallelepiped structure as a whole, mounting holes are formed in four corners of the mounting base body, the mounting holes are stepped holes, and when assembling, the mounting base is fixed in the second working chamber 450 by screws, the two mounting bases in this embodiment are symmetrically disposed on two sides of the cam, a pipeline hole 530 penetrates through two ends of the mounting base body, the pipeline hole 530 is circular, the axial direction of the pipeline hole is parallel to the length direction of the housing, a sliding hole 531 is formed at a front end (toward the cam) of the mounting base body 530, the sliding hole 531 communicates with the pipeline hole 530, the axial line of the sliding hole 531 is perpendicular to the axial line of the cam, the pressing block 54 is slidably fitted in the sliding hole 531, the sliding direction of the pressing block 54 is perpendicular to the length direction of the pipeline hole, and the pressing block 54 can press the flexible pipe sleeved in the pipeline hole 530 and block when sliding backwards (i.e., moving towards the cam).

The branch pipes and the main pipe can be integrally made of flexible pipes; the straight pipe (manifold) can also be composed of a rigid pipe 62a and a flexible pipe, wherein the flexible pipe is arranged in the mounting seat and used for blocking the pressing block in an extrusion manner, and the rigid pipe is arranged at the two ends of the flexible pipe and used for connecting the liquid end and the liquid outlet end.

Referring to fig. 14-17, the sliding hole includes a main hole and two sub holes 532, the main hole is rectangular as a whole and is communicated with the pipeline hole 530, the two sub holes 532 are symmetrically disposed at two sides of the main hole, the end portions of the two sub holes are not communicated with the pipeline hole 530, one side of the sub hole close to the main hole is communicated with the main hole, so that the sliding hole forms a hole body with two small ends and a large middle, and the bottom surface (end surface) of the sub hole 532 forms a first step surface 532a; the briquetting comprises a briquetting body 542 capable of being inserted into the main hole and limiting blocks 543 arranged at two sides of the briquetting body 542 and capable of being inserted into the auxiliary holes, the cross section of the briquetting body 542 is the same as that of the main hole, the cross section of the limiting blocks 543 is the same as that of the auxiliary holes, second step surfaces 543a are formed at the ends of the limiting blocks 543, the second step surfaces 543a face the first step surfaces 532a, an elastic part is arranged between the first step surfaces 532a and the second step surfaces 543a, the elastic part enables the briquetting to move back to the pipeline hole 530, even if the briquetting moves towards the cam direction, in the embodiment, spring holes are formed in the first step surfaces 532a and the second step surfaces 543a, at least two upper and lower spring holes are formed in each step surface, the elastic part is a spring, and two ends of the elastic part are respectively sleeved in the spring holes in the first step surfaces or the second step surfaces; the head of the 542 of the pressing block body is provided with an extrusion part 542a which can be inserted into a pipeline hole and used for extruding a flexible pipeline, the whole extrusion part is U-shaped or V-shaped, and the end part of the extrusion part is provided with a fillet; in order to improve the blocking effect, a supporting surface is arranged in the pipeline hole, the supporting surface is a plane, faces the press block and is positioned on the extension line of the sliding hole, the moving direction of the press block is perpendicular to the supporting surface, the supporting surface is in smooth transition with the inner wall of the pipeline hole, when the pipeline hole is in operation, the press block inwards presses the flexible pipe, the side wall of the flexible pipe is attached to the supporting surface (plane), the press block presses and enables the flexible pipe to form 1-shaped deformation, and then a liquid flow passage in the flexible pipe is blocked to form blocking, and a rubber layer is arranged on the supporting surface or the pressing surface in order to protect the flexible pipe.

In order to improve the smoothness of the contact between the pressing block and the cam, a push plate 541 for contacting the cam is provided at the tail of the pressing block body 542, and in this embodiment, a roller (shown in the figure) for contacting the side wall of the cam is provided at the rear end of the pressing block (on the push plate), the rotation axis of the roller is parallel to the rotation axis of the cam, and meanwhile, a rubber layer is provided on the surface of the roller, which can avoid rigid impact with the cam and reduce vibration.

In order to facilitate assembly and control the movement stroke of the pressing block, a pin hole 5310 is formed in the mounting seat and communicated with the main hole, in the embodiment, the pin hole is vertically formed in the top surface of the mounting seat, meanwhile, a strip-shaped groove 5420 is formed in the side wall of the pressing block, the length direction of the strip-shaped groove 5420 is parallel to the movement direction of the pressing block, in the embodiment, the strip-shaped groove is formed in the top surface of the pressing block and penetrates downwards to the outside of the pressing block and is located in the center of the pressing block, in the assembly process, a pin penetrates through the pin hole 5310 and then extends into the strip-shaped groove 5420, the lower end of the pin extends into the pin hole in the lower bottom surface of the main hole, and therefore connection strength and reliability are improved, and the pin hole and the strip-shaped sliding hole are used for limiting the movement stroke of the pressing block 54.

Referring to fig. 11, the cam 52 includes a cam body 521 and a main shaft 522, the main shaft is fixed on one side of the cam body and is coaxial with the cam, and a key is arranged on the cam for connecting with the impeller; the side wall of the cam body 521 is circumferentially and uniformly provided with N first working surfaces 521a, where N is an odd number greater than or equal to 3, that is, N is 3, 5, 7, 9 …, the first working surface 521 is an arc surface coaxial with the spindle 522, distances from each point on the arc surface to the axis of the spindle are the same, that is, the first working surface has the same radius, a second working surface 521b is connected between two adjacent first working surfaces 521a, the working radius of the second working surface 521b is smaller than that of the first working surface 521a, the second working surface is also an arc surface and is not coaxial with the spindle, the first working surface and the second working surface are in arc transition, and when the cam rotates, the first working surface 521a and the second working surface 521b alternately contact with the pressing block and push the pressing block to slide back and forth.

In this embodiment, the cam has 3 first working surfaces 521a and 3 second working surfaces 521b, and when the first working surfaces are in contact with the cam, the pressing block is located at the outer limit position and is in a pressing state, i.e., a blocking state; when the second working surface is contacted with the cam, the pressing block is in a loosening state, and at the moment, the pressing block does not block the flexible pipe and is in a communication state.

In order to achieve better driving and spraying effects, the central angle α of the first working surface 521a is smaller than or equal to the central angle β of the second working surface 521b, and n α + (n + 1) × β =180 °, where n is a natural number greater than or equal to 1, and since the number of the first working surfaces in this embodiment is 3, it is possible to satisfy α +2 β =180 ° that the liquid outlet holes in different flow channels are partially overlapped in time, and at the same time, the occurrence of the phenomenon of impeller seizure can be avoided, thereby improving the cooling effect and the stability and reliability of the overall operation.

Referring to fig. 18-21, a nozzle 62 is disposed on a liquid outlet 461, a liquid spraying hole 620 coaxial with and communicating with the liquid outlet 461 is disposed on the nozzle 62, the liquid spraying hole 620 includes a first liquid spraying hole 6201 and a second liquid spraying hole 6202 sequentially disposed from top to bottom, the two liquid spraying holes are coaxially disposed, a diameter of the second liquid spraying hole 6202 is larger than a diameter of the first liquid spraying hole 6201, a diameter difference between the two holes is 1/20-1/25 of a diameter of the first liquid spraying hole, an air inlet hole 621 is disposed at an upper end of a side wall of the second liquid spraying hole 6202, a diameter of the air inlet is far smaller than the diameter of the first liquid spraying hole, the air inlet hole 621 is obliquely disposed, an air inlet hole (air outlet end) is disposed downward, when the cooling liquid enters the second liquid discharging hole from the first liquid spraying hole, a cross-sectional area is increased, the cooling liquid realizes a first diffusion, meanwhile, a fluid flow forms a negative pressure to the air inlet, air outside the nozzle is introduced into the second liquid spraying hole, so that the air is mixed into the cooling liquid, the cooling liquid is slowly sprayed, a working fluid flow is reduced, a working fluid flow rate, heat absorption effect is reduced, and a cooling liquid cooling effect is achieved, and a cooling effect is reduced, and a cooling effect is achieved.

The main machine in the cooling cavity is placed in two forms:

one is a full immersion mode, i.e. the main machine is completely immersed in the cooling liquid, and the height (liquid level) of the cooling liquid is greater than that of the main machine;

the other is a semi-immersion mode, namely, the main machine is partially immersed in the cooling liquid, the height (liquid) of the cooling liquid is less than that of the main machine, the upper end of the main machine is exposed outside the cooling liquid, the main heating component of the main machine is positioned below the liquid level, and the rest part of the main machine is positioned above the liquid level.

In the same medium, the heated cooling liquid moves upwards, for example, air and cooling liquid flow upwards after being heated, in the embodiment, the sprayed cooling liquid firstly exchanges heat and cools the air above, and flows after falling to the cooling liquid, and particularly when the spray head is obliquely arranged, the cooling liquid generates turbulence, so that the flowability is improved, and the heat exchange efficiency is improved;

when the diffused cooling liquid is sprayed to the surface of the main machine, a layer of cooling liquid film can be generated, heat absorption and temperature reduction can be rapidly realized, and the cooling efficiency is high.

A flow guide block 624 is arranged at the center of the lower end of the second liquid discharge hole 620, the flow guide block is integrally conical, the top surface of the flow guide block is a conical surface, a flow distribution plate 623 is connected between the side wall of the flow guide block 624 and the inner wall of the second liquid spray hole 6202, the top surface of the flow distribution plate is V-shaped, and at least three flow distribution plates 623 are uniformly distributed in the circumferential direction.

In this embodiment, an installation portion corresponding to the liquid outlet hole is provided at the bottom of the housing, the installation portion is annular and coaxial with the liquid outlet hole 461, and an external thread is provided on the outer wall of the installation portion; the nozzle is sleeved with a cover body 61, the upper end of the cover body is open, the lower end of the cover body is provided with an opening, the cover body is integrally U-shaped, the cover body 61 is connected to the mounting portion through threads to fix the nozzle on the bottom surface of the shell, a supporting surface which is in contact with the side wall of the nozzle is arranged in the cover body, the supporting surface is arc-shaped, meanwhile, the side wall of the nozzle is provided with an air passage 622 communicated with the air hole, and the air passage penetrates downwards to the outside of the nozzle.

The liquid outlet hole 461 is a stepped hole with a small upper end and a large lower end, the upper end of the nozzle is sleeved in the large hole of the stepped hole, a sealing gasket is arranged between the stepped surface of the stepped hole and the top surface of the nozzle to realize sealing, a certain elastic force is generated to extrude the nozzle, the lower end of the nozzle is arc-shaped, the nozzle has supporting and centering functions, the nozzle is better fixed by the cover body, and the assembling efficiency and the assembling precision are improved.

In order to reduce the production cost, in the embodiment, the shell comprises three parts, including an upper shell 44, a middle shell 45 and a lower shell 46 which are sequentially connected from top to bottom, wherein the first working cavity, the liquid inlet and the liquid outlet are arranged on the upper shell, and meanwhile, the upper shell is provided with a spherical hinge structure 44, so that the angle of the shell can be adjusted according to the working condition, and the injection angle of the cooling liquid can be adjusted; the second working cavity is arranged on the middle shell 45, the upper end of the second working cavity is open and forms the second working cavity, and the cam, the main pipe, the branch pipe, the mounting seat and the pressing block are all arranged on the middle shell; the runner and the nozzle are arranged on the lower shell, the middle shell and the lower shell can be integrally formed according to the production process, and the sealing rings are arranged among the shells to realize sealing.

During operation, cooling liquid enters the first working cavity 440 from a liquid inlet hole of the shell, the impeller 51 in the first working cavity is pushed to rotate under the action of pressure, a liquid conveying area is formed between blades of the impeller, the cooling liquid at the liquid inlet end is conveyed to the liquid outlet end in the rotating process, enters the header pipe from the liquid outlet hole and is divided into two paths to enter the two branch pipes respectively, meanwhile, the rotation of the impeller drives the cam to rotate, the cam sequentially pushes the press blocks at the two sides of the cam, the press blocks alternately press the flexible pipelines on the two branch pipes, the two branch pipes are alternately communicated, and liquid is sprayed by alternately spraying nozzles on flow passages communicated with the two branch pipes; when nozzle blowout coolant liquid, form the negative pressure in the second hydrojet hole and introduce the second hydrojet with the outer air of nozzle in, make the air sneak into in the coolant liquid, make spun coolant liquid gentle and gentle, increase liquid area, produce the disturbance to the ambient air, the area of contact of increase air and coolant liquid, form good cooling effect in advance to the air, and simultaneously, the coolant liquid quantity has been saved, avoid strikeing the production and splash, simultaneously, can cool down the air of liquid level top and cool down, realize the biphase cooling, the cooling effect is good.

The novel liquid cooling heat dissipation system has the following effects:

3. When the injection direction of shower nozzle was the slope, it is located one side of shower nozzle injection direction to go out the liquid hole, thereby the thermal flow efficiency in the heat conduction liquid can be improved to the immersion that makes the heat transfer after the heat transfer faster.

4. The staggered intermittent cooling and spraying technology is adopted, intermittent contact is generated on the liquid level or a host, the turbulence of the cooling liquid in the cavity is enhanced, the cooling effect is improved, the demand of the cooling liquid in unit time is reduced, the integral cooling liquid usage amount of the system is reduced, and the energy consumption is low.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A novel liquid cooling heat dissipation system comprises a cavity, a power circulation mechanism and heat exchange equipment, wherein heat conducting liquid used for immersing electronic components to be cooled is arranged inside the cavity; the method is characterized in that: the heat conducting liquid in the cavity flows back into the cavity through the heat exchange equipment and the jet mechanism through the power circulation mechanism, wherein the heat exchange equipment is used for carrying out heat exchange cooling on the conveyed heat conducting liquid, and the jet mechanism is used for jetting the heat conducting liquid subjected to heat exchange cooling to the heat conducting liquid in the cavity so as to accelerate the liquidity of the liquid; the jet mechanism can realize discontinuous jet flow and comprises a shell, at least two flow channels for heat conducting liquid to flow through are arranged in the shell, a plurality of liquid outlet holes which are respectively communicated with the two flow channels are formed in the bottom surface of the shell, and a blocking mechanism which enables the flow channels to be discontinuously communicated so as to enable the liquid outlet holes to realize discontinuous liquid spraying is arranged in the shell; the blocking mechanism comprises at least two flexible conduits, pressing blocks and a cam, the flexible conduits are respectively communicated with the flow channel, the pressing blocks are arranged in the shell in a sliding mode and move along the direction close to or far away from the flexible conduits, and an elastic component enabling the pressing blocks to have the movement trend back to the flexible conduits is arranged in the shell; the cam is connected with a power mechanism and can push the pressing block to approach the flexible conduit and block the flexible conduit.

2. The liquid-cooled heat dissipating system of claim 1, wherein: the jet mechanism is immersed in the heat-conducting liquid of the cavity or arranged above the heat-conducting liquid.

3. The liquid-cooled heat dissipating system of claim 1, wherein: the jet mechanism is structurally a nozzle, and the nozzle comprises a plurality of spray holes for pressurizing heat-conducting liquid.

4. The liquid-cooled heat dissipating system of claim 3, wherein: the spraying direction of the spray head is vertical or inclined.

5. The novel liquid-cooled heat dissipation system of claim 3, wherein: the cavity comprises a circulating liquid outlet hole, and when the spraying direction of the sprayer is inclined, the circulating liquid outlet hole is positioned on one side of the spraying direction of the sprayer.

6. The liquid-cooled heat dissipating system of claim 1, wherein: and the heat-conducting liquid after heat exchange and cooling is sprayed by the jet mechanism to generate a liquid turbulence phenomenon on the heat-conducting liquid in the cavity.

7. The liquid-cooled heat dissipating system of claim 1, wherein: a first working cavity with a circular cross section is arranged in the shell, a liquid inlet and a liquid outlet are arranged on the side wall of the first working cavity, the liquid inlet is used as an input port and is communicated with the outlet end of the circulating pipeline, the liquid outlet is respectively communicated with the flow channel through at least two pipelines, and the flexible guide pipe is arranged on the pipeline; the first working cavity is internally and rotatably provided with an impeller driven by heat-conducting liquid entering the first working cavity, and the cam is rigidly connected with the impeller through a main shaft and can synchronously rotate with the impeller.

8. The liquid-cooled heat dissipating system of claim 7, wherein: the liquid outlet is connected with a main pipe, the main pipe is branched into at least two branches which are respectively communicated with the flow channel, flexible guide pipes are arranged on the branches, and the flexible guide pipes are positioned on the motion path of the pressing block.

9. The liquid-cooled heat dissipating system of claim 1, wherein: blocking mechanism still including the mount pad, the mount pad includes that the whole mount pad body that is the cuboid, the mounting hole has been seted up on the mount pad body, the pipeline hole has been run through at the both ends of mount pad body, the intercommunication has been seted up to the front end of mount pad body the slide opening in pipeline hole, the axis perpendicular to in slide opening the rotation axis of cam, the briquetting is cunning joined in marriage in the slide opening, just the slip direction perpendicular to of briquetting the length direction in pipeline hole, the briquetting dorsad the cam can extrude the cover when sliding and establish the downthehole flexible tube of pipeline realizes blocking.

10. The novel liquid-cooled heat dissipation system of claim 9, wherein: the sliding hole comprises a main hole and auxiliary holes arranged on two sides of the main hole, the main hole is communicated with the pipeline hole, the auxiliary holes are communicated with the main hole, and the end parts of the auxiliary holes form a first step surface; the pressing block comprises a pressing block body capable of being inserted into the main hole and limiting blocks which are arranged on two sides of the pressing block body and capable of being inserted into the auxiliary holes, a second step surface is formed at the end part of each limiting block, and an elastic part which enables the pressing block to move back to the pipeline hole is arranged between the first step surface and the second step surface; the head of the pressing block body is provided with an extrusion part which can be inserted into the pipeline hole and is used for extruding the flexible pipeline, and the tail of the pressing block body is provided with a contact plate which is used for being in contact with the cam.

11. The novel liquid-cooled heat dissipation system of claim 1, wherein: the cam comprises a cam body and a main shaft fixed at the center of the cam body, and a key used for being connected with the impeller is arranged on the side wall of the main shaft; the lateral wall circumference equipartition of cam body has a N first working face, and wherein N is more than or equal to 3's odd number, first working face be with the coaxial arc surface of main shaft, adjacent two be connected with the second working face between the first working face, the working radius of second working face is less than the working radius of first working face, when the cam rotates first working face with the second working face crisscross with the briquetting contact promotes the briquetting is reciprocal to slide.

12. The liquid-cooled heat dissipating system of claim 11, wherein: the central angle alpha of the first working surface is smaller than or equal to the central angle beta of the second working surface, and n alpha + (n + 1) × beta =180 degrees, wherein n is a natural number larger than or equal to 1.