Spraying assembly, liquid cooling device and electronic equipment

Abstract

The utility model 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 heat dissipation devices, in particular to a spraying assembly, a liquid cooling device and an electronic device. BACKGROUND

[0002] Liquid cooling heat dissipation has the characteristics of high efficiency cooling and low noise, and is the preferred heat dissipation method for high-power devices or equipment at present. In order to be able to dissipate heat more uniformly for high-power devices or equipment, spraying heat dissipation is usually used, that is, the cooling liquid is sprayed in the form of mist droplets on the heat dissipation device, so that the cooling liquid can more uniformly absorb the heat of the heat dissipation device.

[0003] Since the circulation of the cooling liquid needs to be realized, in the existing liquid cooling device, a protective member is usually attached to the surface of the heat dissipation device, and a sealing cover is further covered to form a sealed cavity around the heat dissipation device. The sealed cavity is connected with an inlet pipe, and the cooling liquid input by the inlet pipe is sprayed on the protective member attached to the surface of the heat dissipation device through the nozzle in the sealed cavity to indirectly absorb the heat generated by the heat dissipation device. A backflow port is opened at the bottom of the sealed cavity, and the backflow port is connected with a backflow pipe. The cooling liquid deposited in the sealed cavity flows into the backflow pipe through the backflow port for subsequent cooling liquid cooling treatment.

[0004] From the above method, it can be seen that since the installation process of the liquid cooling device at the heat dissipation device is complicated, it causes great inconvenience not only for the assembly operation of the manufacturer, but also for the self-installation of the user. Content of the utility model

[0005] In view of the above problems, the present application provides a spraying assembly, a liquid cooling device and an electronic device, which can realize convenient installation at the heat dissipation device and ensure good sealing performance.

[0006] According to an aspect of the embodiments of the present application, a spray assembly is provided, comprising: a housing and a spray head, the housing has a sealed cavity formed in the interior thereof, and the spray head is arranged in the cavity; a wall at one end of the housing is a heat-conducting wall, and an outer side of the heat-conducting wall is used to be attached to a heat-dissipation component to absorb heat of the heat-dissipation component; a liquid inlet interface and a liquid return interface are arranged on the housing, and the liquid inlet interface and the liquid return interface are respectively used to be connected to a liquid inlet pipeline and a liquid return pipeline; the spray head has a liquid inlet flow channel and a liquid return flow channel formed therein and independent of each other; an input port of the liquid inlet flow channel is in communication with the liquid inlet interface, one end of the spray head towards the heat-conducting wall is provided with a nozzle, an output port of the liquid inlet flow channel is in communication with the nozzle, and the nozzle is used to spray the cooling liquid from the liquid inlet interface to the inner side of the heat-conducting wall to make the cooling liquid absorb the heat of the heat-conducting wall; a liquid suction pipe is arranged outwardly on the spray head, an input port of the liquid return flow channel is in communication with the liquid suction pipe, and an output port of the liquid return flow channel is in communication with the liquid return interface, and the liquid suction pipe is used to suck the cooling liquid deposited in the cavity and discharge the cooling liquid through the liquid return interface.

[0007] In an alternative manner, the spray head comprises a fixed part and a rotating part, the fixed part is fixed to the housing, and the rotating part is rotatably connected to the fixed part; the liquid suction pipe is arranged on the rotating part and is arranged eccentrically relative to the rotation axis of the rotating part, so that the liquid suction pipe can be moved to the bottom of the cavity by driving the rotating part to rotate under the action of gravity at any installation angle.

[0008] In an alternative manner, the fixed part comprises a sleeve, and the rotating part comprises a rotating shaft, the rotating shaft is rotatably inserted into 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.

[0009] The nozzle is arranged on the rotating shaft; the sleeve has a first sleeve inner sub-flow channel and a second sleeve inner sub-flow channel formed therein and independent of each other, and the rotating shaft has a first rotating shaft inner sub-flow channel and a second rotating shaft inner sub-flow channel formed therein and independent of each other; one end of the first sleeve inner sub-flow channel forms the input port of the liquid inlet flow channel and is in communication with the liquid inlet interface, and the other end of the first sleeve inner sub-flow channel is in communication with the first intermediate sub-flow channel; one end of the first rotating shaft inner sub-flow channel is in communication with the first intermediate sub-flow channel, and the other end of the first rotating shaft inner sub-flow channel forms the output port of the liquid inlet flow channel and is in communication with the nozzle; the first sleeve inner sub-flow channel, the first intermediate sub-flow channel and the first rotating shaft inner sub-flow channel jointly form the liquid inlet flow channel; one end of the second rotating shaft inner sub-flow channel forms the input port of the liquid return flow channel and is in communication with the liquid suction pipe, and the other end of the second rotating shaft inner sub-flow channel is in communication with the second intermediate sub-flow channel; one end of the second sleeve inner sub-flow channel is in communication with the second intermediate sub-flow channel, and the other end of the second sleeve inner sub-flow channel forms the output port of the liquid return flow channel and is in communication with the liquid return interface; the second rotating shaft inner sub-flow channel, the second intermediate sub-flow channel and the second sleeve inner sub-flow channel jointly form the liquid return flow channel.

[0010] In an alternative way, the nozzle is used to spray the cooling liquid in the form of mist droplets onto the inner side of the heat-conducting wall, and after absorbing the heat of the heat-conducting wall, at least part of the cooling liquid evaporates into gas, and the evaporated gas condenses into liquid cooling liquid after subsequent temperature reduction and deposits at the bottom of the cavity, so as to be pumped out of the cavity by the liquid suction pipe.

[0011] In an alternative way, the inner side of the heat-conducting wall is provided with heat dissipation fins, and the nozzle is used to spray the cooling liquid onto the heat dissipation fins.

[0012] According to another aspect of the embodiments of the present application, a liquid cooling device is provided, which comprises a heat sink, a driving pump and the spray assembly in any one of the above, the heat sink is in communication with the liquid inlet interface through the liquid inlet pipeline and in communication with the liquid return interface through the liquid return pipeline; the driving pump is arranged on the liquid inlet pipeline or the liquid return pipeline to drive the circulation of the cooling liquid between the spray assembly and the heat sink; and the heat sink is used to cool the cooling liquid input from the liquid return pipeline and then deliver the cooling liquid to the spray assembly through the liquid inlet pipeline.

[0013] In an alternative way, the driving pump comprises a pump housing, a first motor and a second motor; the inside of the pump housing is formed with a compression cavity, and the two sides of the pump housing are respectively provided with a liquid suction port and a liquid discharge port in communication with the compression cavity, the liquid suction port and the liquid discharge port are connected in the liquid inlet pipeline or the liquid return pipeline along the flow direction of the cooling liquid; the first motor and the second motor are both external rotor motors and are arranged in the pump housing; a first gear is fixedly sleeved on the rotor of the first motor, a second gear is fixedly sleeved on the rotor of the second motor, the first gear is engaged with the second gear, the engagement position of the first gear and the second gear, the center of the liquid suction port and the center of the liquid discharge port are arranged in a straight line, and the distance between the starting engagement point between the first gear and the second gear and the liquid suction port is less than the distance between the starting engagement point and the liquid discharge port.

[0014] In an alternative way, the heat sink comprises a heat dissipation disc and a heat dissipation fan, the inside of the heat dissipation disc is provided with a heat dissipation flow channel, the heat dissipation disc is provided with a liquid inlet port and a liquid outlet port in communication with the heat dissipation flow channel, the liquid inlet port is in communication with the liquid return pipeline, and the liquid outlet port is in communication with the liquid inlet pipeline; the heat dissipation disc is provided with a through air duct on both sides, and the heat dissipation fan is arranged on at least one side of the air duct, and the heat dissipation fan is used to drive the gas to flow through the air duct to cool the cooling liquid in the heat dissipation flow channel.

[0015] In an alternative way, the heat dissipation disc is further provided with a liquid injection port in communication with the heat dissipation flow channel, the liquid injection port is used to first connect an air suction device to perform vacuumization treatment on the entire flow space of the cooling liquid in the liquid cooling device, and the liquid injection port is also used to inject the cooling liquid after the vacuumization treatment and seal.

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

[0017] The spray assembly provided by the embodiments of the present application has the following advantages. First, the inside of the shell itself forms a complete and sealed cavity, that is, only the sealing performance of the shell needs to be ensured during the production and manufacturing of the spray assembly, which is easier to achieve for manufacturers in terms of technology and assembly process, thereby ensuring that liquid leakage is less likely to occur, greatly simplifies the installation operation of the spray assembly on the heat-dissipating component for users, and improves the user experience.

[0018] On this basis, in order to realize liquid inlet and liquid return, a spray head is arranged in the cavity, and the spray head is integrated with independent liquid inlet flow channels and liquid return flow channels. The liquid inlet flow channels are communicated with an external liquid inlet pipeline through a liquid inlet interface on the shell to realize the input of the cooling liquid. The input cooling liquid is sprayed to the inner side of the heat-conducting wall attached to the heat-dissipating component through a nozzle communicated with a liquid inlet flow channel output port, so as to realize uniform and efficient cooling of the heat-dissipating component. The liquid return is realized by using a liquid suction pipe extending outward from the spray head. Specifically, the liquid suction pipe is communicated with a liquid return flow channel input port, and a liquid return flow channel output port is communicated with an external liquid return pipeline through a liquid return interface. The high-temperature cooling liquid deposited at the bottom of the cavity is finally discharged into the liquid return pipeline through the liquid suction pipe for subsequent cooling liquid cooling treatment, so as to realize the liquid return of the cooling liquid and ensure the circulation of the cooling liquid in the cavity, thereby realizing the continuous and efficient heat dissipation of the heat-dissipating component.

[0019] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented in accordance with the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the accompanying drawings indicate the same or similar components. In the drawings:

[0021] Figure 1 A perspective view of the spray assembly provided by the embodiments of the present application is shown in the figure.

[0022] Figure 2The explosion drawing of the spray assembly is provided for the embodiment of the utility model;

[0023] Figure 3 The explosion drawing of the spray assembly is provided for another embodiment of the utility model;

[0024] Figure 4 The perspective view of the support is provided for another embodiment of the utility model;

[0025] Figure 5 The perspective view of the heat-conducting wall is provided for the embodiment of the utility model;

[0026] Figure 6 The explosion drawing of the spray head is provided for the embodiment of the utility model;

[0027] Figure 7a The structure diagram with the liquid inlet on the front surface of the spray head is provided for the embodiment of the utility model;

[0028] Figure 7b For Figure 7a The sectional view along A-A;

[0029] Figure 8a The structure diagram with the liquid outlet on the back surface of the spray head is provided for the embodiment of the utility model;

[0030] Figure 8b For Figure 8a The sectional view along B-B;

[0031] Figure 9 The perspective view of the sleeve is provided for the embodiment of the utility model;

[0032] Figure 10a The perspective view of the main body is provided for the embodiment of the utility model;

[0033] Figure 10b The perspective view of the bottom cover is provided for the embodiment of the utility model;

[0034] Figure 11 The perspective view of the liquid cooling device is provided for the embodiment of the utility model;

[0035] Figure 12 The explosion drawing of the driving pump is provided for the embodiment of the utility model;

[0036] Figure 13 The sectional view of the driving pump is provided for the embodiment of the utility model;

[0037] Figure 14 The perspective view of the radiator is provided for the embodiment of the utility model.

[0038] The specific embodiment of the drawings is as follows:

[0039] 100, spray assembly;

[0040] 110, housing; 111, cavity; 112, heat-conducting wall; 1121, limiting groove; 1122, heat dissipation fin; 113, bracket; 1131, frame; 1132, leg; 1133, opening; 114, closure cover; 115, liquid inlet interface; 116, liquid return interface;

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

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

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

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

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

[0046] 300, driving pump; 310, pump housing; 311, compression cavity; 312, liquid suction 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 embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise noted, the terms "including" and "comprising" are open-ended and do not exclude the presence of unrecited elements or limitations.

[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 "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0052] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can 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 the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent: A exists, A and B exist, and B exists. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0054] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0055] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0056] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mount", "connect", "connect", "fix", and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0057] It is considered that the operation of attaching the protective member to the surface of the heat dissipation member and sealing the cover with the cover is not only complex and difficult, but also low in efficiency, and has high requirements for sealing. If the user installs it by himself, it is difficult to guarantee the sealing performance, and once the liquid leaks, it will cause serious damage to the heat dissipation member or other devices around it.

[0058] Based on this, the present application considers to design a complete and independent spray assembly, which can realize liquid cooling heat dissipation of the heat dissipation member by simply mounting and attaching the spray assembly on the heat dissipation member. The key is how to realize the liquid inlet and return during the cooling liquid circulation. For this, the present application adopts the structure form that the shell itself forms a sealed cavity and the shell is externally connected with the liquid inlet pipeline and the liquid return pipeline, to realize the liquid inlet and return of the spray assembly. For the spray and return of the cooling liquid in the cavity, the structure form that the spray head is fixed in the cavity is adopted, and the independent liquid inlet flow channel and liquid return flow channel are arranged in the spray head. The two ends of the liquid inlet flow channel are respectively communicated with the liquid inlet pipeline and the nozzle on the spray head, so that the input cooling liquid is sprayed on the inner wall of the shell through the nozzle to indirectly absorb the heat of the heat dissipation member. The two ends of the liquid return flow channel are respectively communicated with the liquid return pipeline and the liquid suction pipe extended on the spray head, so that the deposited cooling liquid in the shell is sucked out through the liquid suction pipe for subsequent cooling and circulation.

[0059] Please refer to Figure 1 and Figure 2 , which respectively show the three-dimensional structure and the exploded structure of the spray assembly provided by the embodiments of the present application. The spray assembly 100 includes a shell 110 and a spray head 120. The inside of the shell 110 forms a sealed cavity 111, and the spray head 120 is arranged in the cavity 111.

[0060] The wall of one end of the shell 110 is a heat-conducting wall 112, and the outer side of the heat-conducting wall 112 is used to be attached on the heat dissipation member (for example, it can be a CPU, a graphics card, a power amplifier module, a memory, a power supply, etc.), so as to absorb the heat of the heat dissipation member. That is, when the heat dissipation member works and generates heat, the heat will be transferred to the heat-conducting wall 112. The heat-conducting wall 112 can be made of copper, aluminum or 6063 aluminum alloy, etc. high thermal conductivity material, so as to speed up the heat transfer from the heat dissipation member to the heat-conducting wall 112.

[0061] Further, for the CPU heat dissipation scene, a bracket can be assembled on the heat-conducting wall 112 to realize the mounting and fixing of the spray assembly 100 at the CPU, as shown in Figure 1 and Figure 2 For example, for the heat dissipation of the CPU of Intel Company, in some embodiments, the bracket 113 can include a frame body 1131 and a leg 1132 extending outward from the end corner of the frame body 1131, the frame body 1131 is connected to the outer side of the heat-conducting wall 112 by fasteners, and the leg 1132 is used to be locked and fixed on the connecting seat of the CPU by fasteners, and such a bracket 113 can be compatible with the CPUs of LGA1155, LGA1200, LGA1700 and LGA2011 packages. In some other embodiments, as shown in the structure of the spray assembly 100 in Figure 3 and Figure 4 the structure of the bracket 113, the bracket 113 can also adopt a plate 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 corner of the bracket 113 is mounted to the connecting seat of the CPU by fasteners, and such a bracket 113 can be compatible with the CPUs of LGA4677, LGA3647 and LGA2011 packages. In addition to the two specific examples provided above, for other types of CPUs or other types of heat dissipation components, other corresponding brackets 113 can be designed to realize the mounting and fixing of the spray assembly 100 at the heat dissipation components, which will not be described here.

[0062] As shown in Figure 2 , the shell 110 can be formed by sealing and buckling the bottom plate and the closure cover 114 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 shell 110. As shown in Figure 5 , the edge of the inner wall of the heat-conducting wall 112 can be provided with a limiting groove 1121, after accommodating a sealing ring (not shown in the figure) in the limiting groove 1121, the closure cover 114 is buckled on the heat-conducting wall 112 to fix and at the same time compress the sealing ring, so as to realize the sealing connection between the closure cover 114 and the heat-conducting wall 112, so that the sealed cavity 111 is formed in the shell 110. In addition to the assembly form of the heat-conducting wall 112 and the closure cover 114 buckling with each other as shown in Figure 2 , the shell 110 can also be realized by buckling and sealing two box-shaped bodies at the opening, of course, it can also be realized by splicing and sealing multiple plate bodies, which is not limited here.

[0063] As shown in Figure 1 and Figure 2As shown, the shell 110 is provided with a liquid inlet interface 115 and a liquid return interface 116, which are used to externally connect liquid inlet pipeline and liquid return pipeline to realize the input and output of the cooling liquid in the cavity 111. The liquid inlet interface 115 and the liquid return interface 116 can adopt a pipeline joint structure and are installed on the shell 110 by means of threaded cooperation or the like. The liquid inlet interface 115 and the liquid return interface 116 can be sealed with the shell 110 by means of clamping a sealing ring or filling sealing glue.

[0064] For the spraying input of the cooling liquid, please refer to the exploded structure of the spray head 120 shown in Figure 2 and Figure 6 , and accordingly, the spray head 120 is provided with a liquid inlet flow channel 121 and a liquid return flow channel 122 which are independent of each other. The input port of the liquid inlet flow channel 121 is in communication with the liquid inlet interface 115. The spray head 120 is provided with a nozzle 123 at one end facing the heat-conducting wall 112. The output port of the liquid inlet flow channel 121 is in communication with the nozzle 123. The nozzle 123 is used to spray the cooling liquid which is introduced from the liquid inlet interface 115 to the inner side surface of the heat-conducting wall 112 in a shape and range shown by the dashed line in the figure, so that the cooling liquid absorbs the heat of the heat-conducting wall 112 to cool and lower the temperature of the heat-conducting wall 112, thereby indirectly realizing the heat dissipation of the heat-dissipation component.

[0065] Since the mist liquid droplets have a larger specific surface area compared with the flowing cooling liquid, the convective heat exchange coefficient between the cooling liquid and the heat-conducting wall 112 can be improved, and the heat dissipation efficiency of the heat-dissipation component can be improved. In addition, the spraying form can make the cooling liquid more fully contact and exchange heat with the entire inner side surface of the heat-conducting wall 112, so that the cooling liquid can more quickly absorb the heat of the heat-conducting wall 112.

[0066] The spraying form can increase the specific surface area of the cooling liquid. In order to further increase the area of the inner side surface of the heat-conducting wall 112 which can contact the cooling liquid, as shown in Figure 5 , the inner side surface of the heat-conducting wall 112 can be provided with a heat dissipation fin 1122. The nozzle 123 is used to spray the cooling liquid onto the heat dissipation fin 1122, so that the mist liquid form of the cooling liquid fully contacts and convectively exchanges heat with the heat dissipation fin 1122, thereby having a higher heat exchange efficiency.

[0067] For the return output of the cooling liquid, please refer to Figure 2 and Figure 6 . The spray head 120 is provided with a liquid suction pipe 124 which extends outward. The input port of the liquid return flow channel 122 is in communication with the liquid suction pipe 124. The output port of the liquid return flow channel 122 is in communication with the liquid return interface 116. The liquid suction pipe 124 is used to suck the cooling liquid deposited in the cavity 111 and discharge it through the liquid return interface 116, so that the cooling liquid with a higher temperature in the cavity 111 is discharged to the outside.

[0068] In the working process, the external liquid inlet pipeline continuously delivers the low-temperature cooling liquid to the nozzle 123 through the liquid inlet interface 115 and the liquid inlet flow channel 121, so that the nozzle 123 continuously sprays the cooling liquid in the form of mist droplets to the heat-conducting wall 112 for cooling and heat dissipation, and the liquid suction pipe 124 continuously sucks away the high-temperature cooling liquid deposited at the bottom of the cavity 111, thereby realizing efficient cooling and heat dissipation of the heat-dissipation component.

[0069] Further, based on the characteristic that the latent heat of a substance is much greater than the sensible heat, a cooling liquid with a lower boiling point, i.e., a cooling liquid with a smaller critical point of evaporation temperature, such as water, ethanol, isopropyl alcohol, or some other volatile liquid or a mixture thereof, can be used, or the cavity 111 can be subjected to vacuumization treatment to lower the boiling point of the cooling liquid inside. The vacuumization treatment can also avoid the influence of the presence of insoluble gas in the cavity 111 on the phase change of the cooling liquid, thereby reducing the resistance of the cooling liquid between the liquid state and the gaseous state. The nozzle 123 sprays the cooling liquid in the form of mist droplets to the inner wall side of the heat-conducting wall 112, and after absorbing the heat of the heat-conducting wall 112, at least part of the cooling liquid evaporates into gas by absorbing heat, changes phase, and makes the latent heat of the cooling liquid manifest, so that the cooling liquid can absorb more heat on the heat-conducting wall 112, thereby improving the heat dissipation efficiency. The evaporated gas in the cavity 111 condenses into a liquid state when it encounters the mist liquid with a lower temperature sprayed in, and the evaporated gas also condenses into a liquid state when it contacts the inner wall of the shell 110 with a lower temperature. The liquid cooling liquid deposits at the bottom of the cavity 111 under the action of gravity and is eventually sucked away and discharged by the liquid suction pipe 124.

[0070] In summary, in the spray assembly 100 provided by the embodiment of the present application, first, the cavity 111 is formed completely and sealed inside the shell 110, i.e., only the sealing performance of the shell 110 needs to be ensured in the production and manufacturing process of the spray assembly 100, which is easier to achieve from the technical and assembly process aspects for the manufacturer, thereby ensuring that the liquid leakage problem is less likely to occur, and greatly simplifies the installation operation of the spray assembly 100 on the heat-dissipation component for the user, thereby improving the user experience.

[0071] On this basis, in order to realize the liquid inlet and return, the spray head 120 is arranged in the cavity 111, and the spray head 120 is integrated with the independent liquid inlet channel 121 and the liquid return channel 122, the liquid inlet channel 121 is communicated with the external liquid inlet pipeline through the liquid inlet interface 115 on the shell 110 to realize the input of the cooling liquid, and the input cooling liquid is sprayed to the inner side of the heat-conducting wall 112 attached to the heat-dissipation component through the nozzle 123 communicated with the output port of the liquid inlet channel 121, so as to realize the uniform and efficient cooling of the heat-dissipation component. The liquid return is realized by the liquid suction pipe 124 extending outward on the spray head 120, specifically, the liquid suction pipe 124 is communicated with the input port of the liquid return channel 122, the output port of the liquid return channel 122 is communicated with the external liquid return pipeline through the liquid return interface 116, the high-temperature cooling liquid deposited at the bottom of the cavity 111 is finally discharged into the return pipeline for subsequent cooling liquid cooling treatment, so as to realize the liquid return of the cooling liquid and ensure the circulation of the cooling liquid in the cavity 111, so as to realize the continuous and efficient heat dissipation of the heat-dissipation component.

[0072] In order to enable the liquid suction pipe 124 to effectively suck the cooling liquid deposited at the bottom under the condition that the spray assembly 100 is horizontally or obliquely installed, and realize the stable return flow of the cooling liquid, the spray head 120 is further improved and designed in the application, and please refer to Figure 6 , the spray head 120 includes a fixed part 125 and a rotating part 126, the fixed part 125 is fixed to the shell 110, and the rotating part 126 is rotatably connected to the fixed part 125. The liquid suction pipe 124 is arranged on the rotating part 126 and is eccentrically arranged relative to the rotation axis (dot-dash line shown in Figure 6 ) of the rotating part 126, so that under any installation angle of the spray assembly 100, the liquid suction pipe 124 can be moved 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 towards the heat-conducting wall 112, and generally has no other requirements for its specific position, the nozzle 123 can be arranged at the center of the end of the rotating part 126 towards the heat-conducting wall 112 as shown in Figure 6 , or can be arranged at the end of the fixed part 125 towards the heat-conducting wall 112, and for different arrangement positions of the nozzle 123, the liquid inlet channel 121 on the spray head 120 is adaptively adjusted to be communicated with 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, most of the application scenarios are vertical, that is, the heat-conducting wall 112 is attached to the top surface of the heat-dissipating component. Of course, for some scenarios such as the vertical or inclined placement of the motherboard, and the spray assembly 100 is used to dissipate heat for the CPU on the motherboard, the spray assembly 100 needs to be installed horizontally or obliquely, that is Figure 6 The dotted line in the figure is horizontal or inclined.

[0075] It should be noted that for the specific embodiment shown in Figure 2 and Figure 6 , since the liquid suction pipe 124 and the nozzle 123 are arranged at the same end of the spray head 120, for the scenario of inclined installation, 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 housing 110 opposite to the heat-conducting wall 112, so that the cooling liquid can be immersed in the bottom near the end of the heat-conducting wall 112, so that the liquid suction pipe 124 can effectively suck the cooling liquid.

[0076] Of course, in addition to being arranged at the same end as the nozzle 123 as shown in Figure 6 , the liquid suction pipe 124 can also be arranged on other surfaces of the rotating part 126, which can be adaptively arranged 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, the heat-conducting wall 112 is installed upward, the liquid suction pipe 124 can be arranged on the end of the rotating part 126 away from the nozzle 123. If the spray assembly 100 is installed obliquely, and the center of the heat-conducting wall 112 is higher than the center of the other end of the housing 110 opposite to the heat-conducting wall 112, then the liquid suction pipe 124 can 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 liquid suction pipe 124 can be rotated by driving the rotating part 126 to be at the position of the bottom of the cavity 111 under the action of its own gravity, so that the cooling liquid deposited at the bottom can be better sucked away.

[0077] In combination with Figure 2 , Figure 5 and Figure 6 , in the specific embodiment shown in the figure, the inner side wall of the heat-conducting wall 112 is provided with heat-dissipating fins 1122, and the liquid suction pipe 124 is arranged on the rotating part 126 in an eccentric manner. For this purpose, in order to avoid interference between the liquid suction pipe 124 and the heat-dissipating fins 1122 when the liquid suction pipe 124 rotates, the heat-dissipating fins 1122 are arranged in a circular array on the inner side of the heat-conducting wall 112, and the liquid suction pipe 124 has a outwardly inclined bending portion 1241. By such arrangement, when the liquid suction pipe 124 rotates with the rotating part 126, it will move along the outer periphery of the heat-dissipating fins 1122 without colliding with the heat-dissipating fins 1122.

[0078] Regarding the specific structure of the fixed part 125 and the rotating part 126, this application proposes an embodiment, such as... Figure 6 As shown, the fixing part 125 includes a sleeve 1251, and the rotating part 126 includes a rotating shaft 1261, which is rotatably inserted into the sleeve 1251. The nozzle 123 is disposed on the rotating shaft 1261.

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

[0080] like Figure 8a and Figure 7b As shown, a sealed intermediate flow channel 130 is formed between the outer circumference of the rotating shaft 1261 and the inner circumference of the sleeve 1251. Specifically, as shown in the figure, sealed bearings 127 can be respectively provided between the two ends of the outer circumference of the rotating shaft 1261 and the two ends of the inner circumference of the sleeve 1251 to form a sealed intermediate flow channel 130 between the outer circumference of the rotating shaft 1261 and the inner circumference of the sleeve 1251, thereby achieving rotational engagement between the two. Alternatively, the rotating shaft 1261 and the sleeve 1251 can also be rotated using ordinary bearings or other conventional engagement methods, with sealing elements clamped between the two ends of the outer circumference of the rotating shaft 1261 and the two ends of the inner circumference of the sleeve 1251 to form a sealed intermediate flow channel 130 between them.

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

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

[0083] For the structure of the inlet flow channel 121, specifically, one end of the first sleeve inner sub-flow channel 141 forms the input port of the inlet flow channel 121 (i.e. the inlet input port 1211 mentioned above and shown in the drawings) and communicates with the inlet interface 115, and the other end of the first sleeve inner sub-flow channel 141 communicates with the first intermediate sub-flow channel 131. One end of the first rotating shaft inner sub-flow channel 151 communicates with the first intermediate sub-flow channel 131, and the other end of the first rotating shaft inner sub-flow channel 151 forms the output port of the inlet flow channel 121 and communicates with the nozzle 123. Based on this, the first sleeve inner sub-flow channel 141, the first intermediate sub-flow channel 131, and the first rotating shaft inner sub-flow channel 151 together form the inlet flow channel 121. The inlet area of the cooling liquid in the spray head 120 is as shown in the small triangle shaded area in Figure 8b and Figure 7b The inlet direction is: inlet interface 115-inlet input port 1211-first sleeve inner sub-flow channel 141-first intermediate sub-flow channel 131-first rotating shaft inner sub-flow channel 151-nozzle 123.

[0084] For the structure of the return flow channel 122, specifically, one end of the second rotating shaft inner sub-flow channel 152 forms the input port of the return flow channel 122 and communicates with the suction tube 124, and the other end of the second rotating shaft inner sub-flow channel 152 communicates with the second intermediate sub-flow channel 132. One end of the second sleeve inner sub-flow channel 142 communicates with the second intermediate sub-flow channel 132, and the other end forms the output port of the return flow channel 122 (i.e. the return output port 1221 mentioned above and shown in the drawings) and communicates with the return interface 116. Based on this, the second rotating shaft inner sub-flow channel 152, the second intermediate sub-flow channel 132, and the second sleeve inner sub-flow channel 142 together form the return flow channel 122. The return area of the cooling liquid in the spray head 120 is as shown in the stepped line shaded area in Figure 8b and Figure 7b The return direction is: suction tube 124-second rotating shaft inner sub-flow channel 152, second intermediate sub-flow channel 132, second sleeve inner sub-flow channel 142-return output port 1221-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 is rotated to any angle, the position of the intermediate flow channel 130 remains unchanged. On this basis, after the intermediate flow channel 130 is divided into the first intermediate sub-flow channel 131 and the second intermediate sub-flow channel 132 by the sealing ring, the first sleeve inner sub-flow channel 141 communicating with the first intermediate sub-flow channel 131 and the 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 shell 110, the input port (i.e. the liquid inlet input port 1211) of the outer end of the first sleeve inner sub-flow passage 141 can be reliably sealed and communicated with the liquid inlet interface 115 on the shell 110, and the output port (i.e. the liquid return output port 1221) of the outer end of the second sleeve inner sub-flow passage 142 can be reliably sealed and communicated with the liquid return interface 116 on the shell 110. And no matter how the rotating shaft 1261 rotates to any angle, the output port of the inner end of the first sleeve inner sub-flow passage 141 always keeps in communication with the first intermediate sub-flow passage 131, and the input port of the inner end of the second sleeve inner sub-flow passage 142 always keeps in communication with the second intermediate sub-flow passage 132.

[0087] The rotating shaft 1261 is provided with a first rotating shaft inner sub-flow passage 151 and a second rotating shaft inner sub-flow passage 152 which are independent of each other. The input port of the first rotating shaft inner sub-flow passage 151 is in communication with the first intermediate sub-flow passage 131, and the output port of the second rotating shaft inner sub-flow passage 152 is in communication with the second intermediate sub-flow passage 132. On the basis that the first intermediate sub-flow passage 131 and the second intermediate sub-flow passage 132 are always in the same position 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-flow passage 151 always keeps in communication with the first intermediate sub-flow passage 131, and the output port of the second rotating shaft inner sub-flow passage 152 always keeps in communication with the second intermediate sub-flow passage 132, so as to realize that the rotating shaft 1261 will not affect the liquid inlet and liquid return during the rotation relative to the sleeve 1251.

[0088] Further, in order to conveniently process the corresponding flow passages on the sleeve 1251 and the rotating shaft 1261, the flow passage forms in the sleeve 1251 and the rotating shaft 1261 are respectively designed.

[0089] First, please refer to Figure 8b and 8b , and combine Figure 7bThe three-dimensional structure of the sleeve 1251 shown has two internal sub-channels, the first and second, which are radially connected. The first sub-channel 141 is located on the sleeve 1251 opposite to the first intermediate sub-channel 131, and the second sub-channel 142 is located on the sleeve 1251 opposite to the second intermediate sub-channel 132. This arrangement allows the first and second internal sub-channels 141 and 142 to communicate with the first and second intermediate sub-channels 131 and 132 respectively. Furthermore, the internal spaces of the first and second internal sub-channels 141 and 142 are free of bends. During processing, only openings need to be made at the corresponding positions on the sleeve 1251, making the process 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 it can be assembled and fixed by welding, bonding or other methods. The specific method is not limited here.

[0090] Please see Figure 9 The rotating shaft 1261 may include a main body 12611 and a bottom cover 12612. The main body 12611 is rotatably inserted into the sleeve 1251. The bottom cover 12612 is a sealing cover located at the bottom end of the main body 12611. Specifically, it can be locked with screws and the internal flow channel can be sealed by clamping a sealing gasket (such as a soft rubber gasket) or filling the sealing cavity.

[0091] Please combine further Figure 6 , Figure 8b The structure of the main body 12611 shown and Figure 10a The structure of the bottom cover 12612 shown includes a first flow channel 1511, which is radially opened on the main body 12611 opposite to the first intermediate sub-flow channel 131, and a second flow channel 1512, which extends from the center of the bottom end of the main body 12611 and communicates with the first flow channel 1511, on the rotation axis of the main body 12611. The first flow channel 1511 and the second flow channel 1512 together constitute the aforementioned sub-flow channel 151 within the first rotating shaft. The bottom cover 12612 is provided with a clearance hole 1231, through which a nozzle 123 is installed at the outlet of the bottom end of the second flow channel 1512. Under this configuration, regardless of how the main body 12611 rotates, the openings at both ends of the first flow channel 1511 can always communicate with the first intermediate sub-flow channel 131, ensuring that the incoming coolant can continuously pass through the first flow channel 1511 and the second flow channel 1512 before reaching the nozzle 123, where it is sprayed out to cool the components requiring heat dissipation. Meanwhile, both the first flow channel 1511 and the second flow channel 1512 are 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 channel in the rotating shaft 1261. For liquid return, first as shown in Figure 10b and Figure 7b , the main body 12611 has two ends through third flow channels 1521 radially arranged at a position opposite to the second intermediate sub-flow channel 132, and the fourth flow channel 1522 vertically extends inward from the bottom end of the main body 12611, which is offset from the center and is connected to the third flow channel 1521. The fourth flow channel 1522 can be one, as shown in the figure, or more, which is not limited here. Please further refer to Figure 10a , the bottom cover 12612 has a water return groove 1523 on the side facing the main body 12611, and the opening of the water return groove 1523 is connected to 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 form the second rotating shaft inner sub-flow channel 152. The suction tube 124 is connected or integrally formed with the bottom cover 12612, and the bottom of the water return groove 1523 is at least partially through and connected to the suction tube 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 cooling liquid can be continuously sucked out by the suction tube 124 for subsequent cooling. Since the third flow channel 1521 and the fourth flow channel 1522 are straight holes, and the water return groove 1523 is a groove structure, their processing is also very convenient.

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

[0094] In addition to the specific ways provided in the above embodiments, the fixed part 125 can be a rotating support fixed to the inner wall of the shell 110, and the rotating part 126 can be assembled on the rotating support through bearings or other rotating connection methods. The liquid inlet channel 121 and the liquid return channel 122 are arranged on the rotating part 126. In order to ensure that the rotating part 126 does not affect the liquid inlet and liquid return when rotating, 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 embodiments of the present application, a liquid cooling device is also provided, please refer to Figure 8bThe liquid cooling device 500 includes a radiator 200, a drive pump 300, and a spray assembly 100 provided in any of the above embodiments. The radiator 200 is connected to an inlet port 115 via an inlet pipe 410 and to a return port 116 via a return pipe 420. The drive pump 300 can be configured as follows: Figure 11 The coolant is positioned on the return line 420, but can also be positioned on the inlet line 410. The drive pump 300 is used to drive the coolant to circulate between the spray assembly 100 and the radiator 200. After the coolant entering the radiator 200 from the return line 420 is cooled, it is then transported to the spray assembly 100 through the inlet line 410. Correspondingly, the spray assembly 100 sprays the coolant, which is at a lower temperature, onto the heat-conducting wall 112 to cool the components that need to be cooled. Then, the coolant with a higher temperature deposited at the bottom is discharged through the suction pipe 124 and transported to the radiator 200 through the return line 420 for cooling.

[0096] The liquid cooling device provided in this application embodiment, by employing the spray assembly 100 provided in the above embodiment, 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] Traditional liquid cooling systems typically employ impeller-type water pumps. These pumps are characterized by high flow rates, but they rely primarily on centrifugal force to drive the liquid flow, resulting in a relatively small pressure difference between the pump's intake and exhaust ports. For an impeller-type pump to effectively atomize and spray the coolant, it needs to operate at a high speed, inevitably leading to problems such as high pump noise and short lifespan. Furthermore, since gas is inevitably present in the cooling oil flow path, the small pressure difference between the intake and exhaust ports of an impeller-type pump can prevent it from effectively drawing in coolant, causing coolant circulation to cease and cooling of components to stop. This can easily lead to overheating and burnout of the components.

[0098] In view of the above problems, in order to increase the pressure difference between the pumping and discharging ports, this application has made corresponding improvements to the design of the drive pump 300. Please refer to the details below. Figure 11 and Figure 12 , Figure 13 The exploded structure of the drive pump 300 is shown. Figure 12The cross-sectional structure of the driving pump 300 is shown. As shown in the figure, the driving pump 300 comprises a pump housing 310, a first motor 320 and a second motor 330. The inside of the pump housing 310 is formed with a compression cavity 311, and the two sides of the pump housing 310 are respectively provided with a liquid suction port 312 and a liquid discharge port 313 which are in communication with the compression cavity 311. The liquid suction port 312 and the liquid discharge port 313 are connected in the liquid inlet pipeline 410 or the liquid return pipeline 420 along the flow direction of the cooling liquid (indicated by the arrows marked in the figure). Figure 13 The liquid suction port 312 and the liquid discharge port 313 can also be realized in the structure of a pipeline joint as shown, of course, other forms of structures such as flanges can also be realized, and the specific implementation is not limited here. Figure 11

[0099] As shown in the figure, the first motor 320 and the second motor 330 are both external rotor electronic (for example, it can be a brushless motor, etc.), that is, the first motor 320 comprises 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. The second motor 330 comprises 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 sleeved and fixed on the first rotor 322, a second gear 342 is sleeved and fixed on the second rotor 332, the first gear 341 is engaged with the second gear 342, and the engagement position (point D in the figure) of the first gear 341 and the second gear 342, the center of the liquid suction 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 straight line. Figure 12

[0100] In the view angle shown in the figure, 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 starting engagement point (point G in the figure) of the first gear 341 and the second gear 342 is closer to the liquid suction port 312 than to the liquid discharge port 313. The purpose of such arrangement is to compress the cooling liquid by high-speed rotation and mutual engagement of the first gear 341 and the second gear 342, so that the pressure at the liquid suction port 312 is lower than that at the liquid discharge port 313, thereby driving the cooling liquid to flow from the liquid suction port 312 to the liquid discharge port 313 along the direction indicated by the dotted arrow in the figure, and finally realizing the driving of the cooling liquid circulation in the liquid cooling device 500. Figure 13

[0101] ​​​In this embodiment, the first motor 320 and the second motor 330 are built in the pump housing 310, the first motor 320 and the second motor 330 are both outer rotor motors, and the outer periphery of each of the first motor 320 and the second motor 330 is sleeved with the fixed first gear 341 and the fixed second gear 342 respectively, and the compression of the cooling liquid is realized by high-speed engagement of the first gear 341 and the second gear 342, so that a large pressure difference is formed between the liquid suction port 312 and the liquid discharge port 313 to meet the required pressure for spraying of the nozzle 123, and at the same time, the normal circulation of the cooling liquid can be ensured when there is gas in the pipeline.

[0102] As shown in Figure 13 , the first gear 341 and the second gear 342 can be helical gears to reduce the noise when they are engaged. In addition, the space between the first stator 321 and the first rotor 322 and the space between the second stator 331 and the second rotor 332 can be filled with a non-conductive medium such as transformer oil, 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, and on the other hand, the heat generated by the first motor 320 and the second motor 330 during operation can be quickly conducted to the first gear 341, the second gear 342 and the pump housing 310 on which the first motor 320 and the second motor 330 are fixed, and these heat can be taken away by the cooling liquid in the circulation 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 higher than that of the natural convection heat dissipation of the conventional gear pump external motor, thereby realizing long-time uninterrupted operation of the driving pump 300.

[0103] For the specific structure of the heat sink 200, please refer to Figure 12 , the heat sink 200 can include a heat sink disc 210 and a heat sink fan 220, the inside of the heat sink disc 210 is provided with a heat dissipation flow channel (not shown), the heat sink disc 210 is provided with a liquid inlet 211 and a liquid outlet 212 (the positions of the liquid inlet 211 and the liquid outlet 212 can be interchanged) which are in communication with the heat dissipation flow channel, the liquid inlet 211 is in communication with the liquid return pipeline 420, and the liquid outlet 212 is in communication with the liquid inlet pipeline 410, which can be achieved by pipeline joints as shown in Figure 14 and Figure 11 , of course, other ways can also be used, which are not limited here.

[0104] In order to accelerate the cooling of the cooling liquid flowing in the heat dissipation flow channel in the heat sink disc 210, as shown in Figure 14 and Figure 11As shown in the drawings, the heat dissipation disc 210 is provided with a through air duct 213 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 multiple and arranged on one side of the air duct 213 as shown in the drawings, or multiple and arranged on both sides of the air duct 213, respectively. Correspondingly, the heat dissipation fans 220 on both sides are used for air suction and exhaust, respectively, to accelerate the flow rate of air in the air duct 213, so as to realize efficient cooling of the cooling liquid flowing in the heat dissipation disc 210.

[0105] It is mentioned above in the embodiments of the spray assembly 100 that the cavity 111 can be subjected to vacuumizing treatment, and for the liquid cooling device 500, the entire cooling liquid flow space can be subjected to vacuumizing treatment to realize the purposes of reducing the boiling point of the internal cooling liquid and reducing the resistance of the cooling liquid between the liquid state and the gaseous state. Based on this, in order to facilitate the vacuumizing treatment of the entire cooling liquid flow space, as shown in the drawings, Figure 14 Figure 14 The heat dissipation disc 210 can also be provided with a liquid injection port 214 communicating with the heat dissipation flow channel, which is used to connect an air extraction device to perform vacuumizing treatment on the entire cooling liquid flow space in the liquid cooling device 500. The liquid injection port 214 is also used to inject cooling liquid after vacuumizing treatment and sealing to ensure the sealing of the internal space and prevent liquid leakage.

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

[0107] Specifically, taking a desktop computer as an example, the corresponding device main body includes a case and a mainboard and the like in the case. The driving pump 300 and the heat sink 200 can be connected to a fan socket on the mainboard to obtain power, and the heat sink 200 can be arranged on the inner wall at the air outlet of the case to dissipate heat from the heat sink 200 through the air outlet of the case.

[0108] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; 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. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way.

Claims

1. A spray assembly characterized by, include: The housing and the spray head, wherein a sealed cavity is formed inside the housing and the spray head is disposed in the cavity; The wall at one end of the housing is a heat-conducting wall, and the outer surface of the heat-conducting wall is used to attach to the heat dissipation component to absorb the heat of the heat dissipation component. The housing is provided with a liquid inlet and a liquid return interface, which are used to connect to external liquid inlet and liquid return pipelines, respectively. The spray head has independent liquid inlet channels and liquid return channels; The inlet of the liquid inlet channel is connected to the liquid inlet interface. The spray head is provided with a nozzle at one end facing the heat-conducting wall. The outlet of the liquid inlet channel is connected to the nozzle. The nozzle is used to spray the coolant 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 suction tube extends outward from the spray head. The inlet of the return flow channel is connected to the suction tube, and the outlet of the return flow channel is connected to the return interface. The suction tube is used to draw in the coolant deposited in the cavity and discharge it through the return interface.

2. The spray assembly of claim 1, wherein, The spray head includes a fixed part and a rotating part. The fixed part is fixed to the housing, and the rotating part is rotatably connected to the fixed part. The suction tube is disposed on the rotating part and is eccentrically disposed relative to the rotation axis of the rotating part, so that the suction tube can move to the bottom of the cavity under its own gravity by driving the rotating part to rotate under any installation angle.

3. The spray assembly of claim 2, wherein, The fixing part includes a sleeve, and the rotating part includes a rotating shaft, which is rotatably inserted into the sleeve. A sealed intermediate flow channel is formed between the outer circumference of the rotating shaft and the inner circumference of the sleeve. A sealing ring is provided 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 disposed on the rotating shaft; The sleeve has a first sleeve inner sub-flow channel and a second sleeve inner sub-flow channel that are independent of each other, and the rotating shaft has a first rotating shaft inner sub-flow channel and a second rotating shaft inner sub-flow channel that are independent of each other. One end of the inner sub-channel of the first sleeve forms the inlet 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 inner sub-channel of the first rotating shaft is connected to the first intermediate sub-channel, and the other end forms the outlet of the liquid inlet channel and is connected to the nozzle; the inner sub-channel of the first sleeve, the first intermediate sub-channel, and the inner sub-channel of the first rotating shaft together form the liquid inlet channel; One end of the inner sub-channel of the second rotating shaft forms the inlet of the return liquid channel and is connected to the suction pipe, while the other end is connected to the second intermediate sub-channel; one end of the inner sub-channel of the second sleeve is connected to the second intermediate sub-channel, while the other end forms the outlet of the return liquid channel and is connected to the return liquid interface; the inner sub-channel of the second rotating shaft, the second intermediate sub-channel, and the inner sub-channel of the second sleeve together form the return liquid channel.

4. The spray assembly of any one of claims 1-3, wherein, The nozzle is used to spray the cooling liquid in the form of mist droplets on the inner side of the heat-conducting wall, and after absorbing the heat of the heat-conducting wall, at least part of the cooling liquid evaporates into gas, and the evaporated gas condenses into liquid cooling liquid after subsequent temperature reduction and deposits at the bottom of the cavity to be pumped out of the cavity by the liquid suction pipe.

5. The spray assembly of any one of claims 1-3, wherein, The inner side of the heat-conducting wall is provided with a heat dissipation fin, and the nozzle is used to spray the cooling liquid on the heat dissipation fin.

6. A liquid cooling device, characterized by, The liquid cooling device comprises a heat sink, a driving pump and a spray assembly as claimed in any one of claims 1-5, the heat sink is communicated with the liquid inlet interface through a liquid inlet pipeline and communicated with 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 circulation of the cooling liquid between the spray assembly and the heat sink; The heat sink is used to cool the cooling liquid input from the liquid return pipeline and then deliver the cooling liquid to the spray assembly through the liquid inlet pipeline.

7. The liquid cooling device of claim 6, wherein, The driving pump comprises a pump housing, a first motor and a second motor; The inside of the pump housing is formed with a compression cavity, and the two sides of the pump housing are respectively provided with a liquid suction port and a liquid discharge port communicated with the compression cavity, and the liquid suction port and the liquid discharge port are connected in the liquid inlet pipeline or the liquid return pipeline along the flow direction of the cooling liquid; The first motor and the second motor are both outer rotor motors and are arranged in the pump housing; A first gear is fixedly sleeved on the rotor of the first motor, a second gear is fixedly sleeved on the rotor of the second motor, the first gear is engaged with the second gear, the engagement position of the first gear and the second gear, the center of the liquid suction port and the center of the liquid discharge port are arranged in line, and the distance between the first gear and the second gear at the starting engagement point is less than the distance between the starting engagement point and the liquid discharge port.

8. The liquid cooling device of claim 6, wherein, The heat sink comprises a heat dissipation disc and a heat dissipation fan, the inside of the heat dissipation disc is provided with a heat dissipation flow channel, the heat dissipation disc is provided with a liquid inlet port and a liquid outlet port communicated with the heat dissipation flow channel, the liquid inlet port is communicated with the liquid return pipeline, and the liquid outlet port is communicated with the liquid inlet pipeline; The heat dissipation disc is provided with a through air duct on both sides, the heat dissipation fan is arranged on at least one side of the air duct, and the heat dissipation fan is used to drive the gas to flow through the air duct to cool the cooling liquid in the heat dissipation flow channel.

9. The liquid cooling device of claim 8, wherein, The heat dissipation disc is also provided with a liquid injection port communicated with the heat dissipation flow channel, the liquid injection port is used to be externally connected to a gas suction device to perform vacuumizing treatment on the entire cooling liquid flow space in the liquid cooling device, and the liquid injection port is also used to inject cooling liquid and seal after the vacuumizing treatment.

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

Images