Spraying assembly, liquid cooling device and electronic equipment

Abstract

The invention relates to the technical field of liquid cooling heat dissipation devices, and discloses a spraying assembly, a liquid cooling device and electronic equipment, the spraying assembly comprises a shell and a spraying head, a sealed cavity is formed in the shell, and the spraying head is arranged in the cavity; the wall at one end of the shell is a heat conduction wall which is used for being attached to a piece needing heat dissipation. The shell is provided with a liquid inlet connector and a liquid return connector. A liquid inlet flow channel and a liquid return flow channel are formed in the spraying head; an input port of the liquid inlet flow channel communicates with the liquid inlet connector, a nozzle is arranged at the end, facing the heat conduction wall, of the spraying head, an output port of the liquid inlet flow channel communicates with the nozzle, and the nozzle is used for spraying cooling liquid introduced from the liquid inlet connector to the inner side face of the heat conduction wall; a liquid suction pipe is arranged on the spraying head in an outward extending mode, an input port of the liquid return flow channel is communicated with the liquid suction pipe, and an output port of the liquid return flow channel is communicated with the liquid return connector. By means of the mode, convenient installation at the position where heat dissipation is needed can be achieved, and meanwhile good sealing performance is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of liquid cooling devices, and in particular to a spray assembly, a liquid cooling device and an electronic device. Background Art

[0002] Liquid cooling has the characteristics of high efficiency and low noise, and is currently the preferred cooling method for high-power devices or equipment. In order to achieve more uniform cooling of high-power devices or equipment, spray cooling is usually used, that is, the coolant is sprayed in the form of mist droplets onto the heat-dissipating parts, so that the coolant can more evenly absorb the heat of the heat-dissipating parts.

[0003] Since the circulation of the coolant is required, in the existing liquid cooling device, a protective piece is usually first attached to the surface of the heat dissipation component, and then a sealing cover is further covered to form a sealed cavity around the heat dissipation component. The sealed cavity is connected to a liquid inlet pipeline, and the coolant input by the liquid inlet pipeline is sprayed onto the protective piece attached to the surface of the heat dissipation component through a nozzle in the sealed cavity to indirectly absorb the heat generated by the heat dissipation component. At the same time, a reflux port is opened at the bottom of the sealed cavity, and the reflux port is externally connected to the liquid return pipeline. The coolant deposited inside the sealed cavity will flow into the liquid return pipeline through the reflux port for subsequent coolant cooling treatment.

[0004] It is not difficult to see from the above methods that since the installation process of the liquid cooling device at the location where the heat sink needs to be cooled is cumbersome and complicated, it causes great inconvenience both for the manufacturer's assembly work and for the user's self-installation. Summary of the invention

[0005] In view of the above problems, the embodiments of the present application provide a spray assembly, a liquid cooling device and an electronic device, which can be easily installed at a location where heat dissipation is required while ensuring good sealing performance.

[0006] According to one aspect of an embodiment of the present application, a spray assembly is provided, comprising: a shell and a spray head, wherein a sealed cavity is formed inside the shell, and the spray head is arranged in the cavity; a wall at one end of the shell is a heat-conducting wall, and the outer side surface of the heat-conducting wall is used to be attached to a heat dissipation component to be radiated so as to absorb the heat of the heat dissipation component to be radiated; a liquid inlet interface and a liquid return interface are provided on the shell, and the liquid inlet interface and the liquid return interface are used to be externally connected to a liquid inlet pipeline and a liquid return pipeline respectively; a mutually independent liquid inlet flow channel and a liquid return flow channel are provided in the spray head; an input port of the liquid inlet flow channel is connected to the liquid inlet interface, a nozzle is provided at one end of the spray head facing the heat-conducting wall, an output port of the liquid inlet flow channel is connected to the nozzle, and the nozzle is used to spray the coolant introduced from the liquid inlet interface to the inner side surface of the heat-conducting wall so that the coolant absorbs the heat of the heat-conducting wall; a liquid suction pipe is provided on the spray head extending outward, the input port of the liquid return flow channel is connected to the liquid suction pipe, and the output port of the liquid return flow channel is connected to the liquid return interface, and the liquid suction pipe is used to suck the coolant deposited in the cavity and discharge it through the liquid return interface.

[0007] In an optional manner, the spray head includes a fixed part and a rotating part, the fixed part is fixed to the shell, and the rotating part can be rotatably connected to the fixed part; the pipette is arranged on the rotating part and is eccentrically arranged relative to the rotation axis of the rotating part, so that at any installation angle of the spray assembly, the pipette can move to the bottom of the cavity under the action of its own gravity by driving the rotating part to rotate.

[0008] In an optional manner, the fixed portion includes a sleeve, the rotating portion includes a rotating shaft, and the rotating shaft is rotatably inserted in the sleeve; a sealed intermediate flow channel is formed between the outer periphery of the rotating shaft and the inner periphery of the sleeve, and a sealing ring is arranged in the intermediate flow channel, and the sealing ring divides the intermediate flow channel into a first intermediate sub-flow channel and a second intermediate sub-flow channel along the axial direction of the rotating shaft;

[0009] The nozzle is arranged on the rotating shaft; the sleeve is provided with a first sleeve inner sub-channel and a second sleeve inner sub-channel which are independent of each other, and the rotating shaft is provided with a first rotating shaft inner sub-channel and a second rotating shaft inner sub-channel which are independent of each other; one end of the first sleeve inner sub-channel forms an input port of the liquid inlet channel and is connected to the liquid inlet interface, and the other end is connected to the first intermediate sub-channel; one end of the first rotating shaft inner sub-channel is connected to the first intermediate sub-channel, and the other end forms an output port of the liquid inlet channel and is connected to the nozzle; the first sleeve inner sub-channel, the first intermediate sub-channel and the first rotating shaft inner sub-channel jointly form the liquid inlet channel; one end of the second rotating shaft inner sub-channel forms an input port of the liquid return channel and is connected to the liquid suction tube, and the other end is connected to the second intermediate sub-channel; one end of the second sleeve inner sub-channel is connected to the second intermediate sub-channel, and the other end forms an output port of the liquid return channel and is connected to the liquid return interface; the second rotating shaft inner sub-channel, the second intermediate sub-channel and the second sleeve inner sub-channel jointly form the liquid return channel.

[0010] In an optional manner, the nozzle is used to spray the coolant in the form of mist droplets onto the inner side of the heat-conducting wall. After the coolant absorbs the heat from the heat-conducting wall, at least part of the coolant evaporates into gas. The evaporated gas condenses into liquid coolant after the temperature is subsequently reduced and is deposited at the bottom of the cavity so that it can be sucked out of the cavity by a suction pipe.

[0011] In an optional manner, heat dissipation fins are provided on the inner side of the heat-conducting wall, and the nozzle is used to spray coolant onto the heat dissipation fins.

[0012] According to another aspect of an embodiment of the present application, a liquid cooling device is provided, comprising a radiator, a driving pump and a spray assembly as described in any of the above items, the radiator being connected to a liquid inlet interface via a liquid inlet pipeline, and being connected to a liquid return interface via a liquid return pipeline; the driving pump being arranged on the liquid inlet pipeline or the liquid return pipeline to drive the coolant to circulate between the spray assembly and the radiator; the radiator being used to cool the coolant input from the liquid return pipeline, and then transporting the coolant to the spray assembly via the liquid inlet pipeline.

[0013] In an optional manner, the driving pump includes a pump housing, a first motor and a second motor; a compression chamber is formed inside the pump housing, and a suction port and a discharge port connected to the compression chamber are respectively opened on both sides of the pump housing, and the suction port and the discharge port are connected to the liquid inlet pipeline or the liquid return pipeline along the flow direction of the coolant; the first motor and the second motor are both outer rotor motors, and are both arranged in the pump housing; a first gear is fixedly mounted on the rotor of the first motor, and a second gear is fixedly mounted on the rotor of the second motor, the first gear is meshed with the second gear, and the meshing position of the first gear and the second gear, the center of the suction port and the center of the discharge port are collinearly arranged, and the distance between the starting meshing point between the first gear and the second gear and the suction port is smaller than the distance between the starting meshing point and the discharge port.

[0014] In an optional manner, the radiator includes a heat sink and a heat sink fan, a heat sink is provided inside the heat sink, a liquid inlet and a liquid outlet connected to the heat sink are provided on the heat sink, the liquid inlet is connected to the liquid return pipeline, and the liquid outlet is connected to the liquid inlet pipeline; the heat sink is provided with an air duct running through both sides, the heat sink is provided with a heat sink fan on at least one side of the air duct, and the heat sink fan is used to drive gas to flow through the air duct to cool the coolant in the heat sink.

[0015] In an optional manner, the heat sink is also provided with a liquid filling port connected to the heat dissipation channel. The liquid filling port is used to first connect to an external vacuum device to vacuum the entire flow space of the coolant in the liquid cooling device. The liquid filling port is also used to inject coolant and seal it after the vacuum treatment.

[0016] According to another aspect of the embodiments of the present application, an electronic device is provided, comprising a device body and a liquid cooling device as described in any of the above items; the outer side surface of the heat-conducting wall is attached to the CPU in the device body, and the radiator and the drive pump are fixed to the device body and electrically connected to the device body.

[0017] In the spray assembly provided in the embodiment of the present application, firstly, a complete and sealed cavity is formed inside the shell itself, that is, it is only necessary to ensure the sealing of the shell assembly during the production and manufacturing process of the spray assembly. Compared with the method of sealing during installation on the heat dissipating part at a later stage, for manufacturers, it is relatively easy and simple to implement both in terms of technology and assembly process, thereby ensuring that leakage problems are unlikely to occur. For users, it greatly simplifies the installation operation of the spray assembly on the heat dissipating part, thereby improving the user experience.

[0018] On this basis, in order to achieve liquid inlet and liquid return, a spray head is set in the cavity, and the spray head integrates independent liquid inlet flow channels and liquid return flow channels. The liquid inlet flow channel is connected to the external liquid inlet pipeline through the liquid inlet interface on the shell to realize the input of the coolant. The input coolant is sprayed to the inner side of the heat-conducting wall attached to the heat dissipating element on the shell through the nozzle connected to the output port of the liquid inlet flow channel, so as to achieve uniform and efficient cooling of the heat dissipating element. For liquid return, it is achieved by using a liquid suction pipe extending outward from the spray head. Specifically, the liquid suction pipe is connected to the input port of the liquid return flow channel, and the output port of the liquid return flow channel is connected to the external liquid return pipeline through the liquid return interface. After the high-temperature coolant deposited at the bottom of the cavity is sucked by the liquid suction pipe, it is finally discharged into the loop pipeline for subsequent coolant cooling treatment, thereby realizing the return of the coolant and ensuring the circulation of the coolant in and out of the cavity to continuously and efficiently dissipate the heat of the heat dissipating element.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0021] Figure 1 A three-dimensional diagram of a spray assembly provided by an embodiment of the present invention;

[0022] Figure 2 An exploded view of a spray assembly provided by an embodiment of the present invention;

[0023] Figure 3 An exploded view of a spray assembly provided in another embodiment of the present invention;

[0024] Figure 4 A three-dimensional diagram of a bracket provided in another embodiment of the present invention;

[0025] Figure 5 A three-dimensional diagram of a heat-conducting wall provided in an embodiment of the present invention;

[0026] Figure 6 An exploded view of a spray head provided by an embodiment of the present invention;

[0027] Figure 7a A structural diagram of a spray head provided by an embodiment of the present invention with a liquid inlet located at the front;

[0028] Figure 7b for Figure 7a Section view along AA;

[0029] Figure 8a A structural diagram of a spray head provided by an embodiment of the present invention with a liquid return outlet located on the back;

[0030] Figure 8b for Figure 8a Sectional view along BB;

[0031] Fig. 9 A three-dimensional diagram of a sleeve provided in an embodiment of the present invention;

[0032] Fig.10a A three-dimensional diagram of a main body provided by an embodiment of the present invention;

[0033] Fig.10b A three-dimensional diagram of a bottom cover provided by an embodiment of the present invention;

[0034] Fig.11 A three-dimensional diagram of a liquid cooling device provided by an embodiment of the present invention;

[0035] Fig.12 An exploded view of a driving pump provided by an embodiment of the present invention;

[0036] Fig.13 A cross-sectional view of a driving pump provided by an embodiment of the present invention;

[0037] Fig.14 A three-dimensional diagram of a heat sink provided in an embodiment of the present invention.

[0038] The reference numerals in the specific implementation manner are as follows:

[0039] 100. Spray assembly;

[0040] 110, shell; 111, cavity; 112, heat-conducting wall; 1121, limit groove; 1122, heat dissipation fin; 113, bracket; 1131, frame; 1132, support foot; 1133, opening; 114, closing cover; 115, liquid inlet interface; 116, liquid return interface;

[0041] 120, spray head; 121, liquid inlet channel; 1211, liquid inlet input port; 122, liquid return channel; 1221, liquid return output port; 123, nozzle; 1231, avoidance hole; 124, liquid suction tube; 1241, bending part; 125, fixing part; 1251, sleeve; 126, rotating part; 1261, rotating shaft; 12611, main body; 12612, bottom cover; 127, sealed bearing; 128, sealing ring; 1281, annular groove;

[0042] 130, middle flow channel; 131, first middle sub-flow channel; 132, second middle sub-flow channel;

[0043] 141, sub-flow channel in the first sleeve; 142, sub-flow channel in the second sleeve;

[0044] 151, sub-flow channel in the first rotating shaft; 1511, first flow channel; 1512, second flow channel; 152, sub-flow channel in the second rotating shaft; 1521, third flow channel; 1522, fourth flow channel; 1523, return water tank;

[0045] 200, radiator; 210, heat sink; 211, liquid inlet; 212, liquid outlet; 213, air duct; 214, liquid injection port; 220, cooling fan;

[0046] 300, driving pump; 310, pump housing; 311, compression chamber; 312, liquid extraction port; 313, liquid discharge port; 320, first motor; 321, first stator; 322, first rotor; 330, second motor; 331, second stator; 332, second rotor; 341, first gear; 342, second gear;

[0047] 410, liquid inlet pipeline; 420, liquid return pipeline;

[0048] 500. Liquid cooling device. DETAILED DESCRIPTION

[0049] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0051] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0052] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0053] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0054] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0055] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0056] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0057] Considering that the operation of attaching protective parts and cover sealing covers to the surface of the heat dissipation component is not only complicated and difficult, but also inefficient, and has high requirements for sealing. If the user installs it by himself, it is difficult to ensure its sealing performance. Once leakage occurs, it will cause serious damage to the heat dissipation component or other devices around it.

[0058] Based on this, the present application considers designing a complete and independent spray assembly, which can realize liquid cooling of the heat dissipation components by simply installing and attaching the spray assembly to the heat dissipation components. The key lies in how to realize the liquid inlet and liquid return during the cooling liquid circulation process. To this end, the present application adopts a structure in which a sealed cavity is formed inside the shell itself, and the shell is connected to the liquid inlet pipeline and the liquid return pipeline to realize the liquid inlet and liquid return of the spray assembly. For the cooling liquid spray and return in the cavity, a structure in which a spray head is fixed in the cavity is adopted, and independent liquid inlet flow channels and liquid return flow channels are set in the spray head. The two ends of the liquid inlet flow channel are respectively connected to the liquid inlet pipeline and the nozzle on the spray head, so that the input coolant is sprayed onto the inner wall of the shell through the nozzle to indirectly absorb the heat of the heat dissipation components. The two ends of the liquid return flow channel are respectively connected to the liquid return pipeline and the liquid suction pipe extending from the spray head, so that the coolant deposited in the shell is sucked out by the liquid suction pipe for subsequent cooling and circulation input.

[0059] See also Figure 1 and Figure 2 The figure shows the three-dimensional structure and explosion structure of the spray assembly provided in the embodiment of the present application respectively. The spray assembly 100 includes a shell 110 and a spray head 120. A sealed cavity 111 is formed inside the shell 110, and the spray head 120 is arranged in the cavity 111.

[0060] The wall at one end of the housing 110 is a heat-conducting wall 112. The outer side of the heat-conducting wall 112 is used to be attached to a component to be cooled (for example, a CPU, a graphics card, an amplifier module, a memory, a power supply, and other devices or equipment) to absorb the heat of the component to be cooled. That is, when the component to be cooled generates heat, its heat will be transferred to the heat-conducting wall 112. The heat-conducting wall 112 can be made of a high thermal conductivity material such as copper, aluminum, or 6063 aluminum alloy to accelerate the transfer of heat from the component to be cooled to the heat-conducting wall 112.

[0061] Furthermore, for the CPU heat dissipation scenario, a bracket can be assembled on the heat-conducting wall 112 to achieve the installation and fixation of the spray assembly 100 at the CPU, as shown in the following example: Figure 1 and Figure 2 As shown, taking the heat dissipation of Intel's CPU as an example, in some embodiments, the bracket 113 may include a frame 1131 and legs 1132 extending outward from the end corners of the frame 1131, the frame 1131 is connected to the outside of the heat-conducting wall 112 by fasteners, and the legs 1132 are used to be locked and fixed on the connection seat of the CPU by fasteners. This type of bracket 113 is compatible with CPUs packaged in LGA1155, LGA1200, LGA1700 and LGA2011. In other embodiments, such as Figure 3 Middle spray assembly 100 and Figure 4As shown in the structure of the middle bracket 113, the bracket 113 can also adopt a plate-like structure with an opening 1133 in the middle. The bracket 113 is fixed to the heat-conducting wall 112 around the opening 1133 by fasteners, and the end corners of the bracket 113 are installed on the connection seat of the CPU by fasteners. This type of bracket 113 is compatible with CPUs packaged in LGA4677, LGA3647 and LGA2011. In addition to the two specific examples provided above, for other types of CPUs or other types of heat dissipation parts, other corresponding brackets 113 can also be designed to achieve the installation and fixation of the spray assembly 100 at the heat dissipation parts, which will not be repeated here.

[0062] like Figure 2 As shown, the housing 110 can be formed by a bottom plate and a sealing cover 114 that are sealed and buckled with each other. In the specific embodiment shown in the figure, the bottom plate is the heat-conducting wall 112 mentioned above. Of course, in some other embodiments, the bottom plate and the heat-conducting wall 112 can also be different walls in the housing 110. Figure 5 As shown, the edge of the inner wall of the heat-conducting wall 112 can be provided with a limiting groove 1121. After a sealing ring (not shown) is placed in the limiting groove 1121, the sealing cover 114 is buckled and fixed on the heat-conducting wall 112 and the sealing ring is pressed at the same time to achieve a sealed connection between the sealing cover 114 and the heat-conducting wall 112, so that a sealed cavity 111 is formed in the housing 110. Figure 2 In addition to the assembly form of the heat-conducting wall 112 and the sealing cover 114 interlocking with each other, it can also be achieved by two box-shaped bodies interlocking with each other at the opening and sealing. Of course, it can also be achieved by multiple plates spliced ​​together and sealed, which is not limited here.

[0063] like Figure 1 and Figure 2 As shown, the housing 110 is provided with a liquid inlet interface 115 and a liquid return interface 116, which are used to connect external liquid inlet pipelines and liquid return pipelines to achieve the entry and exit of the cooling liquid in the cavity 111. The liquid inlet interface 115 and the liquid return interface 116 can both adopt a pipeline joint structure and be installed on the housing 110 through threaded matching or the like. The sealing of the cavity 111 can be achieved between the liquid inlet interface 115 and the liquid return interface 116 and the housing 110 by clamping a sealing ring or filling a sealant or the like.

[0064] For coolant spray input, please combine Figure 2 as well as Figure 6The explosion structure of the spray head 120 shown in the figure, correspondingly, the spray head 120 is provided with a liquid inlet channel 121 and a liquid return channel 122 which are independent of each other, the input port of the liquid inlet channel 121 is connected with the liquid inlet interface 115, and the spray head 120 is provided with a nozzle 123 at one end facing the heat conducting wall 112, and the output port of the liquid inlet channel 121 is connected with the nozzle 123, and the nozzle 123 is used for spraying the coolant introduced from the liquid inlet interface 115 onto the inner side surface of the heat conducting wall 112 in the approximate shape and range shown by the dotted line in the figure, so that the coolant absorbs the heat of the heat conducting wall 112, thereby cooling the heat conducting wall 112, and then indirectly realizing the heat dissipation of the heat dissipating parts.

[0065] Since the mist droplets have a larger specific surface area than the flowing coolant, the convective heat transfer coefficient between the coolant and the heat-conducting wall 112 can be increased, and the heat dissipation efficiency of the heat-dissipating parts can be improved. In addition, the spray form can make the coolant contact and heat exchange with the entire inner surface of the heat-conducting wall 112 more fully, ensuring that the coolant can absorb the heat of the heat-conducting wall 112 more quickly.

[0066] The spray form can increase the specific surface area of ​​the coolant. On this basis, in order to further increase the area of ​​the inner side of the heat-conducting wall 112 that can contact the coolant, as shown in FIG. Figure 5 As shown in , the inner side of the heat-conducting wall 112 can be provided with heat-dissipating fins 1122, and the nozzle 123 is used to spray coolant onto the heat-dissipating fins 1122 so that the coolant in the form of mist liquid can fully contact and convectively exchange heat with the heat-dissipating fins 1122, thereby having a higher heat exchange efficiency.

[0067] For the return output of the coolant, please combine Figure 2 and Figure 6 A liquid suction pipe 124 is extended outward from the spray head 120, the input port of the return liquid channel 122 is connected to the liquid suction pipe 124, and the output port of the return liquid channel 122 is connected to the return liquid interface 116. The liquid suction pipe 124 is used to suck the coolant deposited in the cavity 111 and discharge it through the return liquid interface 116, so that the coolant with a higher temperature in the cavity 111 can be discharged to the outside.

[0068] During operation, the external liquid inlet pipeline continuously delivers low-temperature coolant to the nozzle 123 through the liquid inlet interface 115 and the liquid inlet channel 121, so that the nozzle 123 continuously sprays the coolant to the heat-conducting wall 112 in the form of mist droplets for cooling and heat dissipation. At the same time, the liquid suction pipe 124 continuously absorbs the high-temperature coolant deposited at the bottom of the cavity 111, thereby circulating to achieve efficient cooling and heat dissipation of the heat-dissipating parts.

[0069] Furthermore, based on the property that the latent heat of a substance is much greater than the sensible heat, a coolant with a low boiling point, that is, a coolant with a low critical temperature point of evaporation, such as water, ethanol, isopropanol and other volatile liquids or their mixtures, can be used. The cavity 111 can also be vacuumed to reduce the boiling point of the internal coolant. At the same time, the vacuum treatment can also avoid the influence of the phase change of the coolant when there is an insoluble gas inside the cavity 111, thereby reducing the resistance of the coolant to change between the liquid and gaseous states. The nozzle 123 sprays the coolant in the form of mist droplets onto the inner wall side of the heat-conducting wall 112, and after the coolant absorbs the heat of the heat-conducting wall 112, at least part of the coolant absorbs heat and evaporates into gas, and a phase change occurs, so that the latent heat of the coolant can be reflected, so that the coolant can absorb more heat from the heat-conducting wall 112, thereby improving the heat dissipation efficiency. The evaporated gas in the cavity 111 exchanges heat and condenses into liquid when encountering the injected mist liquid with a lower temperature. At the same time, the evaporated gas will also condense into liquid when it contacts the inner wall of the shell 110 with a lower temperature. The liquid coolant will be deposited at the bottom of the cavity 111 under the action of gravity and will eventually be sucked away and discharged by the suction pipe 124.

[0070] To sum up, in the spray assembly 100 provided in the embodiment of the present application, firstly, a complete and sealed cavity 111 is formed inside the shell 110 itself, that is, it is only necessary to ensure the sealing of the shell 110 assembly during the production and manufacturing process of the spray assembly 100. Compared with the method of sealing during installation on the heat dissipating part at a later stage, for manufacturers, it is relatively easy and simple to implement both in terms of technology and assembly process, thereby ensuring that leakage problems are not likely to occur. For users, it greatly simplifies the installation operation of the spray assembly 100 on the heat dissipating part, thereby improving the user experience.

[0071] On this basis, in order to realize liquid inlet and liquid return, a spray head 120 is arranged in the cavity 111, and the spray head 120 integrates independent liquid inlet channels 121 and liquid return channels 122. The liquid inlet channel 121 is connected to an external liquid inlet pipeline through a liquid inlet interface 115 on the shell 110 to realize the input of coolant. The input coolant is sprayed onto the inner side of the heat-conducting wall 112 on the shell 110 attached to the heat dissipation component through a nozzle 123 connected to the output port of the liquid inlet channel 121, so as to realize uniform and efficient cooling of the heat dissipation component. In case of liquid return, it is achieved by using a liquid suction pipe 124 extending outward from the spray head 120. Specifically, the liquid suction pipe 124 is connected to the input port of the liquid return channel 122, and the output port of the liquid return channel 122 is connected to the external liquid return pipeline through the liquid return interface 116. The high-temperature coolant deposited at the bottom of the cavity 111 is sucked in by the liquid suction pipe 124, and finally discharged into the loop pipeline for subsequent coolant cooling treatment, thereby realizing the liquid return of the coolant and ensuring the circulation of the coolant in and out of the cavity 111, so as to continuously and efficiently dissipate heat for the heat dissipation components.

[0072] In order to enable the suction pipe 124 to effectively suck the coolant deposited at the bottom and achieve stable reflux of the coolant when the spray assembly 100 is installed horizontally or tilted, the present application further improves the design of the spray head 120. Please refer to the following for details. Figure 6 The spray head 120 includes a fixed portion 125 and a rotating portion 126. The fixed portion 125 is fixed to the housing 110, and the rotating portion 126 is rotatably connected to the fixed portion 125. The liquid suction tube 124 is disposed on the rotating portion 126 and is rotatably connected to the rotating portion 126. Figure 6 The dotted line shown in FIG. 1 is eccentrically arranged so that at any installation angle of the spray assembly 100, the liquid suction tube 124 can move to the bottom of the cavity 111 by driving the rotating part 126 to rotate under the action of its own gravity.

[0073] Since the nozzle 123 only needs to be able to spray liquid toward the heat transfer wall 112, there is generally no other requirement for its specific position. Figure 6 As shown, it is arranged at the center of one end of the rotating part 126 facing the heat conducting wall 112, and can also be arranged at one end of the fixed part 125 facing the heat conducting wall 112. According to different setting positions of the nozzle 123, the liquid inlet channel 121 on the spray head 120 can be adaptively adjusted to connect it to the nozzle 123.

[0074] The “installation angle” mentioned above can be understood as the rotation axis of the rotating part 126 (i.e. Figure 6The angle between the dotted line in the figure and the horizontal plane is the angle between the dotted line in the figure and the horizontal plane. In most application scenarios, the heat conducting wall 112 is placed vertically, that is, the heat conducting wall 112 is attached downward to the top surface of the heat dissipation component. Of course, for some scenarios such as the motherboard is placed vertically or tilted, and the spray assembly 100 is used to dissipate heat from the CPU on the motherboard, the spray assembly 100 needs to be installed horizontally or tilted, that is, Figure 6 The dotted lines are horizontal or inclined.

[0075] It should be pointed out that for Figure 2 and Figure 6 In the specific embodiment shown, since the suction tube 124 and the nozzle 123 are arranged at the same end of the spray head 120, for the inclined installation scenario, it is necessary to ensure that the center of the heat-conducting wall 112 is lower than the center of the other end of the shell 110 opposite to the heat-conducting wall 112, so that the coolant can be immersed in the bottom near one end of the heat-conducting wall 112, so that the suction tube 124 can effectively absorb the coolant.

[0076] Of course, the pipette 124 can also be used as Figure 6 In addition to being arranged at the same end as the nozzle 123, the pipette 124 may also be arranged on other surfaces of the rotating part 126, and may be arranged adaptively according to the application scenario of the spray assembly 100. For example, when the spray assembly 100 is installed in an inverted manner, that is, when the heat-conducting wall 112 is installed upward, the pipette 124 may be arranged on the end of the rotating part 126 away from the nozzle 123. If the spray assembly 100 is installed in an inclined manner, and the center of the heat-conducting wall 112 is higher than the center of the other end of the shell 110 opposite to the heat-conducting wall 112, the pipette 124 may be arranged on the end of the rotating part 126 away from the nozzle 123, or on the annular side surface of the rotating part 126. Regardless of the position, after installation, the pipette 124 can be driven by its own gravity to rotate the rotating part 126 to be located at the bottom of the cavity 111, so that the coolant deposited at the bottom can be better sucked away.

[0077] In combination Figure 2 , Figure 5 and Figure 6 In the specific embodiment shown in the figure, the inner wall of the heat-conducting wall 112 is provided with heat dissipation fins 1122, and the liquid pipette 124 is eccentrically arranged on the rotating part 126. In this regard, in order to avoid the interference between the heat dissipation fins 1122 and the heat dissipation fins 1122 when the liquid pipette 124 rotates, the heat dissipation fins 1122 are distributed in an array that is generally close to a circle on the inner side surface of the heat-conducting wall 112. At the same time, the liquid pipette 124 has a bent portion 1241 inclined outward. Through this arrangement, when the liquid pipette 124 rotates with the rotating part 126, it will move along the outer periphery of the heat dissipation fins 1122 without colliding or interfering with the heat dissipation fins 1122.

[0078] Regarding the specific structure of the fixing portion 125 and the rotating portion 126, the present application proposes an implementation method, such as Figure 6 As shown in FIG. 1 , the fixing portion 125 includes a sleeve 1251 , and the rotating portion 126 includes a rotating shaft 1261 , and the rotating shaft 1261 is rotatably inserted in the sleeve 1251 . The nozzle 123 is disposed on the rotating shaft 1261 .

[0079] Please further combine Figure 7a and Figure 7b as well as Figure 8a and Figure 8b ,in, Figure 7a The structure is shown when the input port (the liquid input port 1211 in the figure) of the liquid inlet channel 121 on the spray head 120 is located at the front. Figure 7b Shows Figure 7a The cross-sectional structure along AA, Figure 8a The structure when the output port (the output port 1221 in the figure) of the return liquid channel 122 on the spray head 120 is located at the back side is shown. Figure 8b It shows Figure 8a Cross-sectional structure along BB.

[0080] like Figure 7b and Figure 8b As shown, a sealed intermediate flow channel 130 is formed between the outer periphery of the rotating shaft 1261 and the inner periphery of the sleeve 1251. Specifically, as shown in the figure, sealed bearings 127 can be respectively arranged between the two ends of the outer periphery of the rotating shaft 1261 and the two ends of the inner periphery of the sleeve 1251, so that a sealed intermediate flow channel 130 is formed between the outer periphery of the rotating shaft 1261 and the inner periphery of the sleeve 1251, and the rotational cooperation between the two is realized. In addition, the rotating shaft 1261 and the sleeve 1251 can also be connected in rotation by ordinary bearings or other conventional cooperation methods, and a seal is clamped between the two ends of the outer periphery of the rotating shaft 1261 and the two ends of the inner periphery of the sleeve 1251, so that a sealed intermediate flow channel 130 is formed between the two.

[0081] Furthermore, a sealing ring 128 is provided in the middle flow channel 130 , and the sealing ring 128 divides the middle flow channel 130 into a first middle sub-flow channel 131 and a second middle sub-flow channel 132 along the axial direction of the rotating shaft 1261 (the direction of the dotted line in the figure).

[0082] The sleeve 1251 is provided with a first sleeve inner sub-flow channel 141 and a second sleeve inner sub-flow channel 142 which are independent of each other, and the rotating shaft 1261 is provided with a first rotating shaft inner sub-flow channel 151 and a second rotating shaft inner sub-flow channel 152 which are independent of each other.

[0083] Regarding the composition of the liquid inlet channel 121, specifically, one end of the first sleeve inner sub-channel 141 forms the input port of the liquid inlet channel 121 (i.e., the liquid inlet input port 1211 mentioned above and shown in the drawings) and is connected to the liquid inlet interface 115, and the other end of the first sleeve inner sub-channel 141 is connected to the first intermediate sub-channel 131. One end of the first rotating shaft inner sub-channel 151 is connected to the first intermediate sub-channel 131, and the other end of the first rotating shaft inner sub-channel 151 forms the output port of the liquid inlet channel 121 and is connected to the nozzle 123. Based on this, the first sleeve inner sub-channel 141, the first intermediate sub-channel 131 and the first rotating shaft inner sub-channel 151 together form the liquid inlet channel 121. The liquid inlet area of ​​the coolant in the spray head 120 is as shown in FIG. Figure 7b and Figure 8b As shown in the small and medium triangle shaded areas, the liquid inlet direction is: liquid inlet interface 115 - liquid inlet input port 1211 - first sleeve inner sub-channel 141 - first middle sub-channel 131 - first rotating shaft inner sub-channel 151 - nozzle 123 .

[0084] Regarding the composition of the liquid return channel 122, specifically, one end of the second rotating shaft inner sub-channel 152 forms the input port of the liquid return channel 122 and is connected to the liquid suction tube 124, and the other end of the second rotating shaft inner sub-channel 152 is connected to the second intermediate sub-channel 132. One end of the second sleeve inner sub-channel 142 is connected to the second intermediate sub-channel 132, and the other end forms the output port of the liquid return channel 122 (i.e., the liquid return output port 1221 mentioned above and shown in the drawings) and is connected to the liquid return interface 116. Based on this, the second rotating shaft inner sub-channel 152, the second intermediate sub-channel 132, and the second sleeve inner sub-channel 142 together form the liquid return channel 122. The liquid return area of ​​the coolant in the spray head 120 is as shown in FIG. Figure 7b and Figure 8b As shown in the middle step line shaded area, the liquid return direction is: the liquid suction tube 124 - the second rotating shaft inner sub-channel 152 , the second middle sub-channel 132 , the second sleeve inner sub-channel 142 - the liquid return output port 1221 - the liquid return interface 116 .

[0085] In this embodiment, the rotating shaft 1261 is rotatably inserted into the sleeve 1251, and a sealed intermediate flow channel 130 is formed therebetween, so that when the rotating shaft 1261 rotates to any angle, the position of the intermediate flow channel 130 remains unchanged. On this basis, after the intermediate flow channel 130 is axially separated into a first intermediate sub-flow channel 131 and a second intermediate sub-flow channel 132 by a sealing ring, a first sleeve inner sub-flow channel 141 communicating with the first intermediate sub-flow channel 131 and a second sleeve inner sub-flow channel 142 communicating with the second intermediate sub-flow channel 132 can be easily opened at different positions on the sleeve 1251.

[0086] Since the sleeve 1251 is fixed relative to the housing 110, the input port (i.e., the liquid input port 1211) at the outer end of the first sleeve inner sub-channel 141 can be reliably sealed and connected with the liquid inlet interface 115 on the housing 110, and the output port (i.e., the return liquid output port 1221) at the outer end of the second sleeve inner sub-channel 142 can be reliably sealed and connected with the return liquid interface 116 on the housing 110. And no matter what angle the rotating shaft 1261 rotates to, the output port at the inner end of the first sleeve inner sub-channel 141 is always connected with the first intermediate sub-channel 131, and the input port at the inner end of the second sleeve inner sub-channel 142 is always connected with the second intermediate sub-channel 132.

[0087] The rotating shaft 1261 is provided with a first rotating shaft inner sub-channel 151 and a second rotating shaft inner sub-channel 152 which are independent of each other. The input port of the first rotating shaft inner sub-channel 151 is connected to the first intermediate sub-channel 131, and the output port of the second rotating shaft inner sub-channel 152 is connected to the second intermediate sub-channel 132. On the basis that the positions of the first intermediate sub-channel 131 and the second intermediate sub-channel 132 remain unchanged when the rotating shaft 1261 rotates, it can be ensured that no matter how the rotating shaft 1261 rotates, the input port of the first rotating shaft inner sub-channel 151 is always connected to the first intermediate sub-channel 131, and the output port of the second rotating shaft inner sub-channel 152 is always connected to the second intermediate sub-channel 132, so that the rotating shaft 1261 will not affect the liquid inlet and liquid return during the relative rotation of the sleeve 1251.

[0088] Furthermore, in order to facilitate processing of corresponding flow channels on the sleeve 1251 and the rotating shaft 1261 , the present application designs the flow channel forms in the sleeve 1251 and the rotating shaft 1261 accordingly.

[0089] First see Figure 7b and 8b , and combined with Fig. 9In the three-dimensional structure of the sleeve 1251 shown, the first sleeve inner sub-channel 141 and the second sleeve inner sub-channel 142 are both arranged to penetrate along the radial direction of the sleeve 1251, and the first sleeve inner sub-channel 141 is located at a position on the sleeve 1251 opposite to the first intermediate sub-channel 131, and the second sleeve inner sub-channel 142 is located at a position on the sleeve 1251 opposite to the second intermediate sub-channel 132. Such an arrangement enables the first sleeve inner sub-channel 141 and the second sleeve inner sub-channel 142 to not only be connected with the first intermediate sub-channel 131 and the second intermediate sub-channel 132 respectively, but also the internal spaces of the first sleeve inner sub-channel 141 and the second sleeve inner sub-channel 142 have no curved parts. During processing, it is only necessary to perform hole processing at the corresponding position on the sleeve 1251, and the processing process is simple and easy to operate. In addition, the top of the sleeve 1251 can be fixed to the housing 110 by screws, rivets, etc., or can be assembled and fixed by other methods such as welding and bonding, which are not limited here.

[0090] See also Figure 6 The rotating shaft 1261 may include a main body 12611 and a bottom cover 12612. The main body 12611 may be rotatably inserted into the sleeve 1251. The bottom cover 12612 is a sealing cover disposed at the bottom end of the main body 12611 and may be specifically locked by screws, and the sealing of the internal flow channel may be achieved by clamping a sealing gasket (such as a soft rubber gasket, etc.) or filling a sealing cavity.

[0091] Please further combine Figure 8b , Fig.10a The structure of the main body 12611 shown and Fig.10b The structure of the bottom cover 12612 shown in the figure is that the main body 12611 is provided with a first channel 1511 with two ends passing through in the radial direction at a position opposite to the first intermediate sub-channel 131, and at the same time, on the rotation axis of the main body 12611, there is a second channel 1512 extending from the center of the bottom end to the first channel 1511 and communicating with the first channel 1511, and the first channel 1511 and the second channel 1512 together constitute the above-mentioned first rotating shaft inner sub-channel 151. The bottom cover 12612 is provided with a position avoidance hole 1231, and the nozzle 123 is installed at the outlet of the bottom end of the second channel 1512 through the position avoidance hole 1231. Under such a setting condition, no matter how the main body 12611 rotates, the openings at both ends of the first channel 1511 can always communicate with the first intermediate sub-channel 131, ensuring that the incoming coolant can continuously pass through the first channel 1511 and the second channel 1512 to reach the nozzle 123, so that it can be sprayed out by the nozzle 123 to cool down and dissipate heat for the heat dissipation parts. At the same time, the first flow channel 1511 and the second flow channel 1512 are both straight-extending holes, which makes the processing of the flow channels on the main body 12611 very convenient.

[0092] The above is the relevant setting of the liquid inlet flow channel in the rotating shaft 1261. For liquid return, first Figure 7b and Fig.10a As shown in the figure, a third flow channel 1521 with two ends connected is radially opened at a position opposite to the second intermediate sub-flow channel 132 on the main body 12611, and a fourth flow channel 1522 connected to the third flow channel 1521 is vertically extended inward from a position offset from the center at the bottom of the main body 12611. The fourth flow channel 1522 can be one, or two as shown in the figure, or more, which is not limited here. Fig.10b , a water return groove 1523 is provided on the side of the bottom cover 12612 facing the main body 12611, and the notch of the water return groove 1523 is connected to the opening at the bottom end of the fourth flow channel 1522, so that the third flow channel 1521, the fourth flow channel 1522 and the water return groove 1523 together constitute the second inner sub-flow channel 152 of the rotating shaft. The liquid suction pipe 124 is connected to the bottom cover 12612 or formed in one piece, and the bottom of the water return groove 1523 is at least partially penetrated and connected to the liquid suction pipe 124. Similarly, no matter how the main body 12611 rotates, the openings at both ends of the third flow channel 1521 can always be connected to the second intermediate sub-flow channel 132, ensuring that the coolant can be continuously sucked out by the liquid suction pipe 124 for subsequent cooling. Since the third flow channel 1521 and the fourth flow channel 1522 are straight-extending holes, and the water return groove 1523 is a groove-shaped structure, their processing is also very convenient.

[0093] like Figure 8b and 10a As shown in the figure, an annular groove 1281 can be set in the middle position of the outer periphery of the main body 12611, and the sealing ring 128 is partially clamped in the annular groove 1281 to achieve the limiting fixation of the sealing ring 128, ensuring that the sealing ring 128 can accurately and reliably separate the middle flow channel 130 into the first middle sub-flow channel 131 and the second middle sub-flow channel 132.

[0094] In addition to the specific methods provided in the above-mentioned embodiments, the fixed part 125 and the rotating part 126 can, in some other embodiments, the fixed part 125 can be a rotating bracket fixed to the inner wall of the shell 110, and the rotating part 126 can be assembled on the rotating bracket by a bearing or other rotating connection method. The liquid inlet channel 121 and the liquid return channel 122 are both arranged on the rotating part 126. In order to ensure that the rotation of the rotating part 126 does not affect the liquid inlet and liquid return, the liquid inlet input port 1211 at the outer end of the liquid inlet channel 121 can be connected to the liquid inlet interface 115 through a hose, and the liquid return output port 1221 at the outer end of the liquid return channel 122 can also be connected to the liquid return interface 116 through a hose.

[0095] According to another aspect of the embodiment of the present application, a liquid cooling device is also provided. Fig.11The liquid cooling device 500 includes a radiator 200, a driving pump 300, and a spray assembly 100 provided in any of the above embodiments. The radiator 200 is connected to the liquid inlet interface 115 through a liquid inlet pipeline 410, and is connected to the liquid return interface 116 through a liquid return pipeline 420. The driving pump 300 can be as follows: Fig.11 As shown, it is arranged on the return liquid pipeline 420, and of course, it can also be arranged on the inlet liquid pipeline 410. The driving pump 300 is used to drive the coolant to circulate between the spray assembly 100 and the radiator 200. The radiator 200 cools down the coolant inputted from the return liquid pipeline 420, and then transports it to the spray assembly 100 through the inlet liquid pipeline 410. Correspondingly, the spray assembly 100 sprays the coolant inputted therein and having a lower temperature onto the heat-conducting wall 112 to cool down the heat dissipating parts to be radiated, and then discharges the coolant with a higher temperature deposited at the bottom through the suction pipe 124 and transports it to the radiator 200 through the return liquid pipeline 420 for cooling.

[0096] The liquid cooling device provided in the embodiment of the present application adopts the spray assembly 100 provided in the above embodiment, which not only ensures that the spray assembly 100 has good sealing performance, but also simplifies the installation operation of the spray assembly 100 on the heat dissipation component, thereby improving the user experience.

[0097] In traditional liquid cooling devices, impeller water pumps are usually used. This type of water pump has the characteristics of large flow rate, but the impeller water pump mainly relies on centrifugal force to drive the flow of liquid, and the pressure difference between its suction port and discharge port is relatively small. For the impeller water pump, if the nozzle 123 is to achieve the effect of atomizing and spraying the coolant, it is necessary for it to work at a relatively high speed, which will inevitably cause problems such as high noise and low life of the water pump. In addition, since there will inevitably be gas in the entire pipeline where the cooling oil flows, if an impeller water pump is used, because the pressure difference between its suction and discharge ports is small, when there is gas, the impeller water pump may not be able to effectively inhale the coolant, resulting in the termination of the coolant circulation, and the heat dissipation of the heat-removing parts stops, which is easy to cause the risk of overheating and burning of the heat-removing parts.

[0098] In view of the above problems, in order to increase the pressure difference between the suction and discharge ports, the present application has made corresponding improvements to the drive pump 300. For details, please refer to Fig.12 and Fig.13 , Fig.12 The exploded structure of the drive pump 300 is shown, Fig.13The cross-sectional structure of the driving pump 300 is shown. As shown in the figure, the driving pump 300 includes: a pump housing 310, a first motor 320 and a second motor 330. A compression chamber 311 is formed inside the pump housing 310, and a liquid extraction port 312 and a liquid discharge port 313 communicating with the compression chamber 311 are respectively opened on both sides of the pump housing 310. The liquid extraction port 312 and the liquid discharge port 313 are arranged along the flow direction of the coolant ( Fig.11 The liquid inlet 312 and the liquid discharge port 313 may also be connected to the liquid inlet pipeline 410 or the liquid return pipeline 420 as shown by the arrows marked on the liquid inlet pipeline 410 and the liquid return pipeline 420. Fig.12 The structure shown is implemented by a pipe joint, and of course other structures such as flanges can also be used, which is not limited here.

[0099] like Fig.13 As shown, the first motor 320 and the second motor 330 are both outer rotor motors (for example, they can be brushless motors, etc.), that is, the first motor 320 includes a first stator 321 and a first rotor 322, and the first rotor 322 is located at the outer periphery of the first stator 321, and the second motor 330 includes a second stator 331 and a second rotor 332, and the second rotor 332 is located at the outer periphery of the second stator 331. A first gear 341 is fixedly mounted on the first rotor 322, and a second gear 342 is fixedly mounted on the second rotor 332. The first gear 341 meshes with the second gear 342, and the meshing position of the first gear 341 and the second gear 342 (point D in the figure), the center of the liquid extraction port 312 (point E in the figure), and the center of the liquid discharge port 313 (point F in the figure) are arranged in a colinear manner.

[0100] exist Fig.13 In the perspective shown, the first rotor 322 drives the first gear 341 to rotate counterclockwise, and the second rotor 332 drives the second gear 342 to rotate clockwise, that is, the distance between the starting meshing point of the first gear 341 and the second gear 342 (point G in the figure) and the liquid extraction port 312 is smaller than the distance between the first gear 341 and the second gear 342 and the liquid discharge port 313. The purpose of this arrangement is to compress the coolant by rotating the first gear 341 and the second gear 342 at high speed and meshing with each other, so that the pressure at the liquid extraction port 312 is smaller than the pressure at the liquid discharge port 313, thereby driving the coolant to flow from the liquid extraction port 312 to the liquid discharge port 313 in the direction shown by the dotted arrow in the figure, and finally realizing the driving of the coolant circulation in the liquid cooling device 500.

[0101] In this embodiment, the first motor 320 and the second motor 330 are built into the pump housing 310. The first motor 320 and the second motor 330 are both external rotor motors, and the first gear 341 and the second gear 342 are respectively fixed on the outer periphery. The first gear 341 and the second gear 342 are engaged at high speed to compress the coolant, so that a large pressure difference is formed between the liquid suction port 312 and the liquid discharge port 313 to meet the pressure required for the spray of the nozzle 123. At the same time, when there is gas in the pipeline, the normal circulation of the coolant can be ensured.

[0102] like Fig.12 As shown, the first gear 341 and the second gear 342 can be helical gears to reduce the noise when the two are meshed. In addition, the first stator 321 and the first rotor 322 and the second stator 331 and the second rotor 332 can be filled with non-conductive media, such as transformer oil, etc., which can be used for lubrication between the first stator 321 and the first rotor 322 and between the second stator 331 and the second rotor 332 on the one hand, and can quickly conduct the heat generated by the first motor 320 and the second motor 330 when working to the first gear 341, the second gear 342 and the pump housing 310 that fixes the first motor 320 and the second motor 330 on the other hand, and take away the heat through the coolant in the circulating flow channel, so that the heat dissipation capacity of the first motor 320 and the second motor 330 in the driving pump 300 is much greater than the natural convection heat dissipation of the external motor of the traditional gear pump, so that the driving pump 300 can be operated uninterruptedly for a long time.

[0103] For the specific structure of the radiator 200, please refer to Fig.14 The radiator 200 may include a heat dissipation plate 210 and a heat dissipation fan 220. A heat dissipation channel (not shown) is disposed inside the heat dissipation plate 210. A liquid inlet 211 and a liquid outlet 212 (the positions of the liquid inlet 211 and the liquid outlet 212 may be interchanged) connected to the heat dissipation channel are provided on the heat dissipation plate 210. The liquid inlet 211 is connected to a liquid return line 420, and the liquid outlet 212 is connected to a liquid inlet line 410. Specifically, Fig.11 and Fig.14 As shown, sealed communication is achieved through a pipe joint, but other methods can certainly be used and are not limited here.

[0104] In order to accelerate the cooling and heat dissipation of the coolant flowing in the heat dissipation channel of the heat dissipation plate 210, as shown in FIG. Fig.11 and Fig.14As shown in the figure, the heat sink 210 is provided with an air duct 213 that passes through on both sides, and the heat dissipation fan 220 is arranged on at least one side of the air duct 213. Specifically, the heat dissipation fan 220 can be one and arranged on one side of the air duct 213, or it can be multiple and all arranged on one side of the air duct 213 as shown in the figure, or it can be multiple and respectively arranged on both sides of the air duct 213. Accordingly, the heat dissipation fans 220 on both sides are respectively used for exhausting air to speed up the flow rate of air in the air duct 213, thereby realizing efficient cooling and heat dissipation of the coolant flowing in the heat sink 210.

[0105] In the above embodiment of the spray assembly 100, it is mentioned that the cavity 111 can be vacuumed. For the liquid cooling device 500, the entire flow space of the coolant can be vacuumed to reduce the boiling point of the internal coolant and reduce the resistance of the coolant to change between the liquid and gas states. Based on this, in order to facilitate the vacuuming of the entire flow space of the coolant, such as Fig.14 As shown, a liquid injection port 214 connected to the heat dissipation channel can also be provided on the heat dissipation plate 210. The liquid injection port 214 is used for an external vacuum device to vacuum the entire flow space of the coolant in the liquid cooling device 500. The liquid injection port 214 is also used for injecting coolant and sealing after the vacuum treatment to ensure the sealing of the internal space and prevent leakage.

[0106] According to another aspect of the embodiments of the present application, an electronic device is also provided, such as a computer, a server, etc. The electronic device includes a device body and a liquid cooling device provided in any embodiment, the outer side of the heat-conducting wall 112 in the spray assembly 100 is attached to the CPU in the device body, and the radiator 200 and the driving pump 300 are fixed to the device body and electrically connected to the device body.

[0107] Specifically, taking a desktop computer as an example, the corresponding device body includes a chassis and a motherboard in the chassis, etc. The drive pump 300 and the radiator 200 can be connected to the fan socket on the motherboard to obtain power, and the radiator 200 can be set on the inner wall of the chassis at the air outlet so that the heat of the radiator 200 can be dissipated from the air outlet on the chassis.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way.

Claims

1. A spray assembly, characterized in that: include: A shell and a spray head, wherein a sealed cavity is formed inside the shell, and the spray head is arranged in the cavity; The wall at one end of the shell is a heat-conducting wall, and the outer side of the heat-conducting wall is used to be attached to the heat dissipation component to absorb the heat of the heat dissipation component; The shell is provided with a liquid inlet interface and a liquid return interface, and the liquid inlet interface and the liquid return interface are respectively used to connect to an external liquid inlet pipeline and a liquid return pipeline; The spray head is provided with a liquid inlet channel and a liquid return channel which are independent of each other; The input port of the liquid inlet channel is communicated with the liquid inlet interface, the spray head is provided with a nozzle at one end facing the heat-conducting wall, the output port of the liquid inlet channel is communicated with the nozzle, and the nozzle is used to spray the coolant introduced from the liquid inlet interface onto the inner side of the heat-conducting wall, so that the coolant absorbs the heat of the heat-conducting wall; A liquid suction pipe is extended outward from the spray head, the input port of the liquid return channel is connected to the liquid suction pipe, the output port of the liquid return channel is connected to the liquid return interface, and the liquid suction pipe is used to suck the coolant deposited in the cavity and discharge it through the liquid return interface.

2. The spray assembly according to claim 1, characterized in that: The spray head comprises a fixed part and a rotating part, wherein the fixed part is fixed to the housing, and the rotating part is rotatably connected to the fixed part; The pipette is arranged on the rotating part and is eccentrically arranged relative to the rotation axis of the rotating part, so that at any installation angle of the spray assembly, the pipette can move to the bottom of the cavity by driving the rotating part to rotate under the action of its own gravity.

3. The spray assembly according to claim 2, characterized in that: The fixing part includes a sleeve, and the rotating part includes a rotating shaft, and the rotating shaft is rotatably inserted in the sleeve; A sealed intermediate flow channel is formed between the outer periphery of the rotating shaft and the inner periphery of the sleeve, a sealing ring is arranged in the intermediate flow channel, and the sealing ring divides the intermediate flow channel into a first intermediate sub-flow channel and a second intermediate sub-flow channel along the axial direction of the rotating shaft; The nozzle is arranged on the rotating shaft; The sleeve is provided with a first sleeve inner sub-flow channel and a second sleeve inner sub-flow channel which are independent of each other, and the rotating shaft is provided with a first rotating shaft inner sub-flow channel and a second rotating shaft inner sub-flow channel which are independent of each other; One end of the sub-channel in the first sleeve forms the input port of the liquid inlet channel and is connected to the liquid inlet interface, and the other end is connected to the first intermediate sub-channel; one end of the sub-channel in the first rotating shaft is connected to the first intermediate sub-channel, and the other end forms the output port of the liquid inlet channel and is connected to the nozzle; the first sub-channel in the sleeve, the first intermediate sub-channel and the first rotating shaft sub-channel together form the liquid inlet channel; One end of the sub-channel in the second rotating shaft forms the input port of the return liquid channel and is connected to the suction tube, and the other end is connected to the second intermediate sub-channel; one end of the sub-channel in the second sleeve is connected to the second intermediate sub-channel, and the other end forms the output port of the return liquid channel and is connected to the return liquid interface; the sub-channel in the second rotating shaft, the second intermediate sub-channel and the sub-channel in the second sleeve together form the return liquid channel.

4. The spray assembly according to any one of claims 1 to 3, characterized in that: The nozzle is used to spray the coolant in the form of mist droplets onto the inner side of the heat-conducting wall. After the coolant absorbs the heat of the heat-conducting wall, at least part of the coolant evaporates into gas. The evaporated gas condenses into liquid coolant after the temperature is subsequently reduced and is deposited at the bottom of the cavity so that it can be sucked out of the cavity by the suction pipe.

5. The spray assembly according to any one of claims 1 to 3, characterized in that: The inner side surface of the heat-conducting wall is provided with heat-dissipating fins, and the nozzle is used for spraying cooling liquid onto the heat-dissipating fins.

6. A liquid cooling device, characterized in that: It comprises a radiator, a driving pump and a spray assembly as claimed in any one of claims 1 to 5, wherein the radiator is connected to the liquid inlet interface through a liquid inlet pipeline and is connected to the liquid return interface through a liquid return pipeline; The driving pump is arranged on the liquid inlet pipeline or the liquid return pipeline to drive the coolant to circulate between the spray assembly and the radiator; The radiator is used to cool the coolant input from the liquid return pipeline and then transport it to the spray assembly through the liquid inlet pipeline.

7. The liquid cooling device according to claim 6, characterized in that: The driving pump comprises a pump housing, a first motor and a second motor; A compression chamber is formed inside the pump housing, and a liquid extraction port and a liquid discharge port communicating with the compression chamber are respectively opened on both sides of the pump housing, and the liquid extraction port and the liquid discharge port are connected to the liquid inlet pipeline or the liquid return pipeline along the flow direction of the coolant; The first motor and the second motor are both outer rotor motors, and are both arranged in the pump housing; A first gear is fixedly mounted on the rotor of the first motor, and a second gear is fixedly mounted on the rotor of the second motor. The first gear is meshed with the second gear. The meshing positions of the first gear and the second gear, the center of the liquid extraction port, and the center of the liquid discharge port are collinearly arranged, and a distance between a starting meshing point between the first gear and the second gear and the liquid extraction port is smaller than a distance between the starting meshing point and the liquid discharge port.

8. The liquid cooling device according to claim 6, characterized in that: The radiator comprises a heat dissipation plate and a heat dissipation fan, a heat dissipation channel is arranged inside the heat dissipation plate, a liquid inlet and a liquid outlet connected to the heat dissipation channel are opened on the heat dissipation plate, the liquid inlet is connected to the liquid return pipeline, and the liquid outlet is connected to the liquid inlet pipeline; The heat dissipation plate is provided with air ducts penetrating on both sides, and the heat dissipation fan is arranged on at least one side of the air duct. The heat dissipation fan is used to drive gas to flow through the air duct to cool the coolant in the heat dissipation flow channel.

9. The liquid cooling device according to claim 8, characterized in that: The heat sink is also provided with a liquid injection port connected to the heat dissipation channel. The liquid injection port is used to first connect an external vacuum device to vacuum the entire flow space of the coolant in the liquid cooling device. The liquid injection port is also used to inject coolant and seal it after the vacuum treatment.

10. An electronic device, characterized in that: It comprises a device body and a liquid cooling device as claimed in any one of claims 6 to 9; The outer side surface of the heat-conducting wall is attached to the CPU in the device body, and the radiator and the driving pump are fixed to the device body and electrically connected to the device body.

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