Liquid cooling module and its pump

Abstract

The application provides a liquid cooling heat dissipation module, comprising: a housing, the housing has a power chamber and a flow channel, the flow channel has a liquid injection part and a liquid suction part, the liquid suction part is communicated with the power chamber; and a pump, located in the housing and used to drive the working liquid to circulate in the power chamber and the flow channel, a frame of the pump has a plurality of liquid inlet grooves, the plurality of liquid inlet grooves are located in the power chamber and communicated with the liquid suction part of the flow channel, a stator of the pump has at least one electrically conductive connecting piece, the electrically conductive connecting piece is led out of the frame from the liquid inlet grooves in the frame, an impeller of the pump is rotatably arranged in the frame and used to guide the working liquid to flow out of the frame and to the liquid injection part of the flow channel.

Description

Technical Field

[0001] The present invention relates to a heat dissipation module, and more particularly to a liquid-cooled heat dissipation module and a pump thereof that can help electronic devices maintain an appropriate operating temperature. Background Art

[0002] Currently, many different types of liquid-cooled heat dissipation modules are available for installation in electronic devices. These modules quickly dissipate heat generated by the electronic devices during operation, preventing overheating, reduced performance, or even system crashes. Chinese patent application number 202010349131.6, filed by the applicant, discloses a liquid-cooled heat dissipation module that is significantly smaller and thinner than existing liquid-cooled heat dissipation modules.

[0003] However, since the pump used in the liquid-cooled heat dissipation module previously applied for by the applicant requires the use of its frame to construct the liquid inlet and outlet channels of the pump, the volume and axial height of the pump are difficult to further reduce, so there is a need for improvement. Summary of the Invention

[0004] To solve the above problems, the present invention aims to provide a liquid-cooled heat dissipation module, wherein the pump can utilize the holes for electrical connection to allow liquid to enter, thereby reducing the volume and axial height.

[0005] A further object of the present invention is to provide a liquid-cooled heat dissipation module that can improve assembly convenience, accuracy, and efficiency.

[0006] Another object of the present invention is to provide a liquid-cooled heat dissipation module that can improve the heat dissipation effect.

[0007] Another object of the present invention is to provide a liquid-cooled heat dissipation module that can improve the smoothness of the circulation of the working fluid.

[0008] The directions or their approximate terms described throughout the present invention, such as "front", "back", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer", "side", etc., mainly refer to the directions of the accompanying drawings. Each direction or its approximate terms are only used to assist in explaining and understanding the various embodiments of the present invention and are not used to limit the present invention.

[0009] The quantifiers “a” or “an” used in the components and members described throughout the present invention are only for convenience of use and to provide a general meaning of the scope of the present invention; in the present invention, they should be interpreted as including one or at least one, and the single concept also includes the plural case, unless it is obvious that it means otherwise.

[0010] Throughout the present invention, similar terms such as "combination", "assembly" or "assembly" mainly include types in which the components can be separated without damaging each other after connection, or in which the components cannot be separated after connection. Those skilled in the art can choose according to the materials of the components to be connected or the assembly requirements.

[0011] The liquid-cooled heat dissipation module of the present invention includes: a shell, which has a power chamber and a flow channel, the flow channel has a liquid injection part and a liquid suction part, and the liquid suction part is connected to the power chamber; and a pump, which is located in the shell and is used to drive the working fluid to circulate in the power chamber and the flow channel, a frame seat of the pump has a plurality of liquid inlet grooves, and the plurality of liquid inlet grooves are located in the power chamber and are connected to the liquid suction part of the flow channel, a stator of the pump has at least one conductive connecting member, and the conductive connecting member passes through the frame seat through the liquid inlet groove and out of the frame seat, and an impeller of the pump is rotatably provided on the frame seat to guide the working fluid to flow out of the frame seat and flow to the liquid injection part of the flow channel.

[0012] The pump of the present invention comprises: a frame having a plurality of liquid inlet grooves; a stator having at least one conductive connecting member extending from the frame through the liquid inlet grooves and out of the frame; and an impeller rotatably disposed on the frame for guiding the working fluid to flow out of the frame.

[0013] Therefore, the liquid-cooled heat dissipation module of the present invention utilizes the hole for the conductive connector to pass through as the liquid inlet groove of the pump, eliminating the need to construct the liquid inlet and outlet channels on the pump frame. This further reduces the volume and axial height of the pump, thereby reducing the thickness of the entire liquid-cooled heat dissipation module and making the liquid-cooled heat dissipation module lighter and thinner.

[0014] The pump frame may include a base plate, a ring wall, and a top cover. The ring wall may be connected to the base plate and the top cover at both ends, and the multiple liquid inlet grooves may extend through the ring wall and / or the top cover. This simplifies the structure of the frame and improves ease of manufacture and assembly.

[0015] The pump's central shaft can be coupled to the upper cover, and the pump's impeller can include a bearing coupled to a base plate. Multiple blades can be connected to the base plate and arranged around the bearing. The bearing is sleeved around the central shaft, and the base plate and the multiple blades can protrude from a through-hole in the bottom plate. This simplifies the impeller's structure, enhancing ease of manufacture and assembly.

[0016] The maximum outer diameter of the impeller can be larger than the diameter of the through hole. In this way, the plurality of blades can be located outside the frame to directly guide the working fluid out of the frame, preventing the working fluid from swirling inside the frame, thereby improving the smoothness and efficiency of guiding the working fluid.

[0017] Wherein the impeller can have a magnetic member above the plurality of blades, the outer diameter of the magnetic member can be smaller than the hole diameter of the through hole. Thus, the impeller can be conveniently installed from below the frame seat, and the magnetic member can pass through the through hole into the frame seat, having the effect of improving assembly convenience.

[0018] Wherein the shell can have a plurality of convex portions in the flow channel. Thus, the contact area of the shell and the working fluid can be further improved by the plurality of convex portions, having the effect of improving heat dissipation.

[0019] Wherein the shell can have a contact port in the power chamber, and the conductive connecting member can be electrically connected with the contact port. Thus, the conductive connecting member can be indirectly electrically connected with an external power source, and the working fluid can be prevented from leaking, having the effects of improving electrical connection convenience and preventing leakage.

[0020] Wherein the shell can have an elastic member in the power chamber, and the elastic member can abut against the inner wall surface of the shell and the frame seat of the pump. Thus, the elastic member can be used to assist in positioning the pump, having the effect of improving assembly convenience.

[0021] Wherein the shell can have a first plate and a second plate, the first plate and the second plate are connected to form the flow channel together, and the shell can have a cover connected with the second plate to form the power chamber in the cover. Thus, the structure of the shell is simple, having the effects of improving manufacturing and assembly convenience.

[0022] Wherein the flow channel can be recessed in the first plate, the second plate can have a communication hole and a return hole, the communication hole can be located in the liquid injection portion, and the return hole can be located in the liquid pumping portion. The communication hole and the return hole can be located in the power chamber. Thus, the working fluid can be circulated in a planar manner by a simple structure, having the effects of improving heat dissipation efficiency and manufacturing and assembly convenience.

[0023] Wherein the surface of the second plate towards the cover can have a clamping portion, the clamping portion can surround the outer periphery of the communication hole, the frame seat of the pump can be clamped and combined with the clamping portion, and the through hole of the frame seat can be axially located within the radial range of the communication hole. Thus, the effects of improving assembly convenience, accuracy and efficiency are achieved.

[0024] The flow channel may have a first section and a second section that are interconnected. The housing may have a partition located between a first plate and a second plate. The first plate and the partition may be connected to form the first section of the flow channel. The second plate and the partition may be connected to form the second section of the flow channel. The housing may have a cover connected to the second plate to form the power chamber within the cover. The power chamber may be connected to the second section of the flow channel. In this way, the working fluid can be caused to circulate in a three-dimensional manner using a simple structure, further improving heat dissipation efficiency.

[0025] The liquid injection portion can be located in the first section of the flow channel, the liquid draw portion can be located in the second section of the flow channel, and the partition can have a connecting hole axially aligning the power chamber and the liquid injection portion. In this way, the housing can be constructed with a simple structure, which has the effect of improving the convenience of manufacturing and assembly.

[0026] The partition plate can connect the first and second sections of the flow channel via a reflux hole. The reflux hole can be located at the end of the first section away from the liquid injection portion, and at the end of the second section away from the liquid withdrawal portion. This improves the smoothness of the working fluid circulation.

[0027] The surface of the partition facing the cover may have a latch portion that surrounds the outer circumference of the communication hole. The pump frame can be engaged with the latch portion, so that a through-hole of the frame can be axially aligned within the radial range of the communication hole. This improves assembly convenience, accuracy, and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 : An exploded perspective view of a first embodiment of a liquid-cooled heat dissipation module according to the present invention;

[0029] Figure 2 : A top view of a first embodiment of a liquid-cooled heat dissipation module according to the present invention;

[0030] Figure 3 :along Figure 2 AA line cross-section diagram;

[0031] Figure 4 : An exploded perspective view of the pump of the present invention;

[0032] Figure 5 : An exploded perspective view of a pump according to another embodiment of the present invention;

[0033] Figure 6 : A side cross-sectional view of the pump of the present invention;

[0034] Figure 7An operation condition diagram of the first embodiment of the liquid cooling heat dissipation module of the present application, wherein the cover of the shell and the ring wall, the upper cover and the magnetic member of the pump and other components are omitted;

[0035] Figure 8 An exploded perspective view of the second embodiment of the liquid cooling heat dissipation module of the present application;

[0036] Figure 9 A top view of the second embodiment of the liquid cooling heat dissipation module of the present application;

[0037] Figure 10 A cross-sectional view along the B-B line of Figure 9 .

[0038] Explanation of reference numerals

[0039] 1: shell

[0040] 1a: first plate

[0041] 1b: second plate

[0042] 1c: cover

[0043] 11: power chamber

[0044] 12: liquid injection part

[0045] 13: liquid absorption part

[0046] 14: convex part

[0047] 15: communication hole

[0048] 16: backflow hole

[0049] 17: clasp part

[0050] 18: elastic member

[0051] 19: contact port

[0052] 2: pump

[0053] 21: frame seat

[0054] 211: bottom plate

[0055] 212: ring wall

[0056] 213: upper cover

[0057] 214: liquid inlet groove

[0058] 22: stator

[0059] 221: winding part

[0060] 222: conductive connecting member

[0061] 23: impeller

[0062] 231: Chassis

[0063] 232: Bearing

[0064] 233:Leaf

[0065] 234:Magnetic parts

[0066] 3: Shell

[0067] 3a: First board

[0068] 3b: Second board

[0069] 3c: Partition

[0070] 3d: cover

[0071] 31: Power chamber

[0072] 32: Liquid injection part

[0073] 33: Liquid extraction part

[0074] 34:convex part

[0075] 35: Connecting hole

[0076] 36: Reflux hole

[0077] 37: latch part

[0078] 38: Elastic parts

[0079] 39: Connector port

[0080] D1: aperture

[0081] D2: Maximum outer diameter

[0082] D3:Outer diameter

[0083] F: Runner

[0084] F1: First paragraph

[0085] F2: Second paragraph

[0086] H: Perforation

[0087] L: working fluid

[0088] M: Liquid cooling module

[0089] N: missing slot

[0090] P1: Liquid inlet

[0091] P2: Liquid outlet

[0092] S: Center axis

[0093] W: inner wall surface. DETAILED DESCRIPTION

[0094] In order to make the above and other objects, features and advantages of the present application more comprehensible, preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0095] Please refer to Figure 1 , Figure 2 Fig. 1 shows a first embodiment of a liquid cooling module M of the present application, which comprises a housing 1 and a pump 2 located in the housing 1 and capable of driving a working liquid L to circulate in the housing 1.

[0096] The housing 1 can be made of copper, aluminum or other high thermal conductivity material, and has a power chamber 11 and a flow channel F connected to each other in the housing 1. The power chamber 11 can accommodate the pump 2, and the working liquid L can be driven by the pump 2 to circulate in the flow channel F.

[0097] In detail, in order to facilitate processing and manufacturing, the housing 1 of the present embodiment can comprise a first plate 1a and a second plate 1b. The flow channel F can be formed in the first plate 1a or / and the second plate 1b, and the flow channel F is formed by the first plate 1a and the second plate 1b after the first plate 1a and the second plate 1b are connected to each other. The housing 1 can further have a cover 1c connected to the second plate 1b to form the power chamber 11 in the cover 1c. The first plate 1a and the cover 1c can be combined with the second plate 1b by means of adhesion, embedding, clamping, locking or welding, so that the power chamber 11 and the flow channel F are both enclosed in the housing 1, thereby effectively preventing the working liquid L from leaking out of the housing 1. In the present embodiment, the first plate 1a and the cover 1c are combined with the second plate 1b by laser welding, so that the first plate 1a and the cover 1c are tightly combined with the second plate 1b without any gap, and the sealing performance and structural strength of the housing 1 are improved. In other embodiments, the cover 1c and the second plate 1b can be integrally formed and connected, for example, the cover 1c is formed by stamping a part of the second plate 1b.

[0098] On the other hand, the flow channel F has a liquid injection portion 12 and a liquid suction portion 13 connected to the power chamber 11. In the present embodiment, the liquid injection portion 12 and the liquid suction portion 13 of the flow channel F are not branched, so that the working liquid L can be continuously driven by the pump 2 from the liquid injection portion 12 to the liquid suction portion 13 of the flow channel F. The housing 1 can further have a plurality of protrusions 14 located in the flow channel F to increase the contact area between the housing 1 and the working liquid L.

[0099] Please refer to Figure 1 、 Figure 3 As shown, the flow channel F of this embodiment can be optionally recessed in the first plate 1a. The liquid injection portion 12 and the liquid draw portion 13 can be located at opposite ends of the flow channel F, respectively. The liquid injection portion 12 and the liquid draw portion 13 are not connected in the first plate 1a. Furthermore, by providing a connecting hole 15 and a return hole 16 in the second plate 1b, and after the first and second plates 1a and 1b are combined, the connecting hole 15 can be aligned with the liquid injection portion 12, and the return hole 16 can be aligned with the liquid draw portion 13. Furthermore, the connecting hole 15 and the return hole 16 can be aligned with the power chamber 11. Thus, the connecting hole 15 can be installed at the pump 2, allowing the working fluid L in the power chamber 11 to flow through the pump 2 into the liquid injection portion 12 of the flow channel F. After flowing to the liquid draw portion 13 of the flow channel F, the working fluid L can return to the power chamber 11 through the return hole 16.

[0100] In addition, the surface of the second plate 1b facing the cover 1c may also be provided with a latch portion 17. The latch portion 17 surrounds the outer periphery of the communication hole 15 and is used for aligning and assembling the pump 2, ensuring that the pump 2 can be assembled in the predetermined position. The housing 1 may also have an elastic member 18 and a contact port 19 located in the power chamber 11. The elastic member 18 can abut the inner wall surface W of the housing 1 (e.g., the inner wall surface W of the cover 1c) and the pump 2 to assist in positioning the pump 2. The contact port 19 can be electrically connected to an external power source and allow the pump 2 to be electrically connected to the contact port 19 from within the cover 1c to provide the pump 2 with the electrical energy required for operation and prevent the working fluid L from leaking therefrom.

[0101] The pump 2 has a liquid inlet P1 and a liquid outlet P2. The pump 2 is located in the housing 1, and the liquid inlet P1 is connected to the power chamber 11, and the liquid outlet P2 is connected to the injection portion 12 of the flow channel F. Therefore, the pump 2 can suck the working fluid L from the power chamber 11 and pump the working fluid L into the flow channel F, providing power for the circulation of the working fluid L.

[0102] Please refer to Figure 3 、 Figure 4As shown, the pump 2 of this embodiment can be assembled and positioned on the first plate 1a or the second plate 1b using a frame 21. For example, the frame 21 can include a base 211 having a through-hole H. The base 211 can be selectively coupled to the second plate 1b, with the through-hole H axially aligned within the radial range of the communication hole 15 of the second plate 1b. The frame 21 can also include a ring wall 212. One end of the ring wall 212 can be connected to the base 211 and can be engaged with the latching portion 17 of the second plate 1b via the base 211 or the ring wall 212. The base 211 and the ring wall 212 can also be integrally formed and connected. The other end of the ring wall 212 can be connected to an upper cover 213, which can be abutted by the elastic member 18. A central axis S of the pump 2 can be fixed to the upper cover 213.

[0103] In addition, the frame 21 further has a plurality of liquid inlet grooves 214, which can respectively penetrate the ring wall 212 and / or the upper cover 213. The plurality of liquid inlet grooves 214 are located in the power chamber 11 and communicate with the liquid drawing portion 13 of the flow channel F. For example, Figure 4 As shown, in this embodiment, the plurality of liquid inlet grooves 214 can be selected to pass through the annular wall 212 laterally. Figure 5 As shown, in other embodiments, the ring wall 212 and the upper cover 213 may each be provided with a plurality of notches N, so that after the ring wall 212 and the upper cover 213 are combined, the corresponding notches N together form the liquid inlet 214. Figure 3 、 Figure 4 As shown, the pump 2 of this embodiment mainly uses the multiple liquid inlet grooves 214 to form the liquid inlet portion P1 of the pump 2. It can be understood that the joint gaps between the components of the frame 21 can also allow the working fluid L to flow in, such as the joint gaps between the upper cover 213 and the annular wall 212. Therefore, the liquid inlet portion P1 of the pump 2 also includes the joint gaps or other gaps or holes that can allow the working fluid L to flow in.

[0104] The pump 2 also has a stator 22 that drives an impeller 23 to rotate. The stator 22 has a winding portion 221 located within the frame 21 and can be assembled and positioned on the base plate 211 or the annular wall 212. The stator 22 has at least one conductive connector 222 electrically connected to the winding portion 221. The stator 22 extends from the frame 21 through the liquid inlet groove 214 and out of the frame 21 for electrical connection to an external power source. The conductive connector 222 can be, for example, a pin or a wire. In embodiments where the contact port 19 is provided within the housing 1, the conductive connector 222 can be electrically connected to the contact port 19 to indirectly connect to the external power source.

[0105] The impeller 23 is rotatably mounted on the frame 21 to guide the working fluid L to flow out of the frame 21 and toward the liquid injection portion 12 of the flow channel F. In this embodiment, the impeller 23 may include a base 231, a bearing 232 may be coupled to the center of the base 231, a plurality of blades 233 are connected to the base 231 and are disposed around the bearing 232, the bearing 232 is sleeved around the outer periphery of the central axis S, and a magnetic member 234 is located above the plurality of blades 233 and radially opposite to the winding portion 221 of the stator 22, so that the magnetic member 234 drives the base 231, the bearing 232, and the plurality of blades 233 to rotate relative to the central axis S.

[0106] It is worth mentioning that please refer to Figure 3 、 Figure 6 As shown, the base 231 of the impeller 23 and the plurality of blades 233 of the pump 2 of this embodiment can be located outside the frame 21, that is, protruding outside the through-hole H of the bottom plate 211 of the frame 21, so as to form a liquid outlet P2 of the pump 2 between the bottom plate 211 of the frame 21 and the base 231 of the impeller 23, so that the plurality of blades 233 can directly guide the working fluid L out of the frame 21, thereby preventing the working fluid L flowing out laterally from swirling in the frame 21, thereby improving the smoothness and efficiency of guiding the working fluid L. In which, the maximum outer diameter D2 of the impeller 23 can be formed on the outer edge of the chassis 231 or the multiple blades 233. The maximum outer diameter D2 of the impeller 23 can be selected to be larger than the aperture D1 of the through-hole H. In addition, the outer diameter D3 of the magnetic component 234 can be smaller than the aperture D1 of the through-hole H, so that the impeller 23 can be installed from the bottom of the frame seat 21, so that the magnetic component 234 can penetrate into the interior of the frame seat 21 through the through-hole H.

[0107] Please refer to Figure 3 、 Figure 7 As shown, in the liquid-cooled heat dissipation module M of this embodiment, when the pump 2 is in operation, the working fluid L in the power chamber 11 can flow from the liquid inlet portion P1 of the pump 2 (mainly through the plurality of liquid inlet grooves 214) into the frame 21, flow through the winding portion 221 of the stator 22, pass between the bearing 232 and the magnetic member 234 of the impeller 23, and flow axially toward the chassis 231. The working fluid L is then laterally guided out of the frame 21 by the plurality of blades 233, and flows through the communicating hole 15 into the liquid injection portion 12 of the flow channel F, and then flows along the flow channel F to the liquid draw portion 13 (please refer to Figure 2 As shown), the working fluid L is returned to the power chamber 11 through the reflux hole 16 to complete a cycle of the working fluid L. A non-conductive liquid can be used as the working fluid L, so that the stator 22 of the pump 2 does not need to be provided with an additional waterproof structure.

[0108] As mentioned above, please refer to Figure 2 、 Figure 3 As shown, the liquid-cooled heat dissipation module M of this embodiment can be placed in an electronic device, and the housing 1 is locally thermally connected to a heat source of the electronic device, for example, by direct contact or indirect contact via a thermally conductive material such as a thermal pad. Thus, during operation of the electronic device, when the temperature of the heat source rises, the housing 1 absorbs the heat energy of the heat source. The working fluid L circulating within the housing 1 absorbs the heat energy from the higher-temperature portion of the housing 1, causing the temperature to rise. Subsequently, when the working fluid L flows farther away from the heat source, it contacts relatively lower-temperature portions of the housing 1, releasing heat and cooling the device. Therefore, the liquid-cooled heat dissipation module M can effectively remove heat energy from the heat source through the continuously circulating working fluid L, helping the electronic device maintain an appropriate operating temperature to prevent performance degradation or thermal shutdown.

[0109] Please refer to Figure 8 、 Figure 9 As shown, it is a second embodiment of the liquid-cooled heat dissipation module M of the present invention. The shell 3 of this embodiment has a different shape from the first embodiment, so that the flow channel F can be divided into a first section F1 and a second section F2 that are connected, and can provide a three-dimensional circulation flow for the working fluid L.

[0110] For details, please refer to Figure 8 、 Figure 10 As shown, the housing 3 of this embodiment may include a first plate 3a, a second plate 3b, and a partition 3c, with the partition 3c positioned between the first and second plates 3a, 3b. The first section F1 of the flow channel F may be selectively formed on the first plate 3a and / or the partition 3c. After the first plate 3a and the partition 3c are relatively connected, the first plate 3a and the partition 3c jointly form the first section F1 of the flow channel F. Similarly, the second section F2 of the flow channel F may be selectively formed on the second plate 3b and / or the partition 3c. After the second plate 3b and the partition 3c are relatively connected, the second plate 3b and the partition 3c jointly form the second section F2 of the flow channel F. The shell 3 may also have a cover 3d, which is connected to the second plate 3b to form a power chamber 31 in the cover 3d, and the power chamber 31 is connected to the second section F2 of the flow channel F; in this embodiment, the cover 3d and the second plate 3b can be integrally formed and connected, but are not limited to this.

[0111] Please refer to Figure 8 、 Figure 9As shown, the flow channel F has an injection portion 32 and a liquid draw portion 33, and the liquid draw portion 33 is connected to the power chamber 31. In this embodiment, the injection portion 32 may be located at the end of the first section F1 of the flow channel F, and the liquid draw portion 33 may be located at the end of the second section F2 of the flow channel F. The housing 3 may have a plurality of protrusions 34 distributed in the first section F1 and / or the second section F2 of the flow channel F. The partition 3c may have a connecting hole 35, which is axially aligned with the power chamber 31 and the injection portion 32 of the flow channel F. The partition 3c may also have a return hole 36, which is used to connect the first section F1 and the second section F2 of the flow channel F. The return hole 36 is preferably aligned at the end of the first section F1 away from the injection portion 32 and at the end of the second section F2 away from the liquid draw portion 33.

[0112] Please refer to Figure 8 、 Figure 10 As shown, the surface of the partition 3c facing the cover 3d may also be provided with a latch portion 37, which surrounds the outer circumference of the communication hole 35. The housing 3 may include an elastic member 38 and a contact port 39 located within the power chamber 31. The elastic member 38 may abut the inner wall W of the housing 3 (e.g., the inner wall W of the cover 3d) and the pump 2. The contact port 39 can be electrically connected to an external power source, allowing the pump 2 to electrically connect to the contact port 39 from within the cover 3d to provide the pump 2 with the electrical energy required for operation.

[0113] The structure of the pump 2 of this embodiment is substantially the same as that described in the first embodiment. During installation, the frame 21 engages the latching portion 37 of the partition 3c, aligning the through-hole H axially within the radial range of the connecting hole 35 of the partition 3c. The elastic member 38 abuts the upper cover 213 of the frame 21. The multiple liquid inlet grooves 214 of the frame 21 are located within the power chamber 31 and communicate with the liquid draw portion 33 located in the second section F2 of the flow channel F. At least one conductive connector 222 of the stator 22 passes through the liquid inlet groove 214 from within the frame 21 and out of the frame 21, where it can be electrically connected to the contact port 39. The base 231 and multiple blades 233 of the impeller 23 protrude from the bottom of the frame 21, that is, from the through-hole H of the bottom plate 211 of the frame 21.

[0114] Therefore, when the pump 2 of the liquid-cooled heat dissipation module M of this embodiment is operating, the working fluid L in the power chamber 31 can mainly flow into the frame 21 through the multiple liquid inlet grooves 214 of the pump 2, flow through the winding portion 221 of the stator 22, pass between the bearing 232 and the magnetic member 234 of the impeller 23, and flow axially toward the chassis 231. The multiple blades 233 then guide the working fluid L laterally out of the frame 21 to flow through the connecting hole 35 into the liquid injection portion 32 located in the first section F1 of the flow channel F, and flow along the first section F1 of the flow channel F. After passing through the reflux hole 36, it flows into the second section F2 of the flow channel F, and then flows to the liquid draw portion 33 located in the second section F2 of the flow channel F to return to the power chamber 31, completing one circulation of the working fluid L.

[0115] It is worth mentioning that, compared to the liquid-cooled heat dissipation module M of the first embodiment, which causes the working fluid L to circulate in a planar manner, the liquid-cooled heat dissipation module M of this embodiment can cause the working fluid L to circulate in a three-dimensional manner, so that the working fluid L can circulate over a larger area within the shell 3, thereby expanding the heat absorption and heat dissipation area and maintaining good circulation efficiency of the working fluid L, thereby further improving the heat dissipation efficiency.

[0116] In summary, the liquid-cooled heat sink module of the present invention utilizes the hole through which the conductive connector passes as a liquid inlet for the pump, eliminating the need to construct liquid inlet and outlet channels on the pump frame. This further reduces the volume and axial height of the pump, thereby reducing the thickness of the entire liquid-cooled heat sink module and making the liquid-cooled heat sink module thinner and lighter.

Claims

1. A liquid-cooled heat dissipation module, characterized in that: It includes: A housing having a power chamber and a flow channel therein, wherein the flow channel has a liquid injection portion and a liquid draw portion, and the liquid draw portion is connected to the power chamber; and A pump is located in the shell and is used to drive the working fluid to circulate in the power chamber and the flow channel. A frame of the pump has multiple liquid inlet grooves, which are located in the power chamber and connected to the liquid suction part of the flow channel. A stator of the pump has at least one conductive connector, which passes through the frame through the liquid inlet groove. An impeller of the pump is rotatably provided on the frame to guide the working fluid to flow out of the frame and flow to the liquid injection part of the flow channel. The frame of the pump has a base plate, a ring wall and an upper cover. The two ends of the ring wall are respectively connected to the base plate and the upper cover. The multiple liquid inlet grooves respectively pass through the ring wall and / or the upper cover. A central axis of the pump is connected to the upper cover. The impeller of the pump has a bearing connected to a chassis. Multiple blades are connected to the chassis and are arranged around the bearing. The bearing is sleeved on the central axis. The chassis and the multiple blades protrude from a through-hole in the base plate.

2. The liquid-cooled heat dissipation module according to claim 1, wherein: The maximum outer diameter of the impeller is greater than the aperture of the through hole.

3. The liquid-cooled heat dissipation module according to claim 1, wherein: The impeller has a magnetic component located above the plurality of blades, and the outer diameter of the magnetic component is smaller than the aperture of the through hole.

4. The liquid-cooled heat dissipation module according to claim 1, wherein: The shell has a plurality of protrusions located in the flow channel.

5. The liquid-cooled heat dissipation module according to claim 1, wherein: The shell has a contact port located in the power chamber, and the conductive connecting member is electrically connected to the contact port.

6. The liquid-cooled heat dissipation module according to claim 1, wherein: The shell has an elastic member located in the power chamber. The elastic member abuts against the inner wall surface of the shell and the frame seat of the pump.

7. The liquid-cooled heat dissipation module according to claim 1, wherein: The shell has a first plate and a second plate, the first plate and the second plate are connected to form the flow channel together, and the shell has a cover connected to the second plate to form the power chamber in the cover.

8. The liquid-cooled heat dissipation module according to claim 7, wherein: The flow channel is recessed in the first plate. The second plate has a connecting hole and a reflux hole. The connecting hole is located opposite to the liquid injection part, the reflux hole is located opposite to the liquid drawing part, and both the connecting hole and the reflux hole are located in the power chamber.

9. The liquid-cooled heat dissipation module according to claim 8, wherein: The surface of the second plate facing the cover body has a latch portion, which surrounds the outer circumference of the connecting hole. The frame seat of the pump is latched and combined with the latch portion, so that a through hole of the frame seat is axially aligned within the radial range of the connecting hole.

10. The liquid-cooled heat dissipation module according to claim 1, wherein: The flow channel has a first section and a second section that are connected to each other. The shell has a partition located between a first plate and a second plate. The first plate is connected to the partition to jointly form the first section of the flow channel. The second plate is connected to the partition to jointly form the second section of the flow channel. The shell has a cover connected to the second plate to form the power chamber within the cover, and the power chamber is connected to the second section of the flow channel.

11. The liquid-cooled heat dissipation module according to claim 10, wherein: The liquid injection portion is located at the first section of the flow channel, the liquid drawing portion is located at the second section of the flow channel, and the partition has a connecting hole axially aligned with the power chamber and the liquid injection portion.

12. The liquid-cooled heat dissipation module according to claim 11, wherein: The partition is connected to the first section and the second section of the flow channel by a reflux hole. The reflux hole is located at the end of the first section away from the liquid injection part and at the end of the second section away from the liquid drawing part.

13. The liquid-cooled heat dissipation module according to claim 11, wherein: The surface of the partition facing the cover body has a latch portion, which surrounds the outer periphery of the connecting hole. The frame seat of the pump is latched and combined with the latch portion, and a through hole of the frame seat is axially aligned within the radial range of the connecting hole.

14. A pump, characterized in that: It includes: a frame base having a plurality of liquid inlet grooves; A stator having at least one conductive connecting piece extending from the frame through the liquid inlet groove and out of the frame; and An impeller is rotatably mounted on the frame seat to guide the working fluid to flow out of the frame seat. The frame seat has a ring wall, the two ends of which are respectively connected to a bottom plate and an upper cover. The multiple liquid inlet grooves respectively penetrate the ring wall and / or the upper cover. It also includes a central shaft connected to the upper cover. The impeller has a bearing connected to a chassis, multiple blades are connected to the chassis and are arranged around the bearing, the bearing is sleeved on the central shaft, and the chassis and the multiple blades protrude from a through hole in the bottom plate.

15. The pump according to claim 14, wherein The plurality of blades of the impeller are located outside the frame seat.

16. The pump according to claim 14, wherein The maximum outer diameter of the impeller is greater than the aperture of the through hole.

17. The pump according to claim 14, wherein The impeller has a magnetic component located above the plurality of blades, and the outer diameter of the magnetic component is smaller than the aperture of the through hole.

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