Liquid cooling head

Abstract

A liquid cooling head includes an upper shell, an impeller, a lower shell and a serrated heat sink. The upper shell has an inlet and an outlet, and the upper shell is fixed on the lower shell, and the impeller is arranged between the upper shell and the serrated heat sink. In addition, the serrated heat sink is fixed on the lower shell, and the impeller sucks the heat dissipation liquid entering from the inlet, makes the heat dissipation liquid pass through the serrated heat sink, and then is upward through the impeller to be discharged from the outlet, thereby improving the heat dissipation efficiency.

Description

TECHNICAL FIELD

[0001] The present invention relates to a liquid cooling head. In particular, the present invention relates to a liquid cooling head with an inverted pump. BACKGROUND

[0002] With the advancement of technology, electronic products have become increasingly popular and have gradually changed the mode of life or work of many people. As the computing power of computers increases, the temperature control of electronic components such as processors during operation becomes more and more important.

[0003] Electronic components such as processors generate heat when running and need to be properly cooled to achieve optimal performance. In order to keep electronic components such as processors running at an ideal temperature, liquid cooling or air cooling is usually used at present.

[0004] With the current liquid cooling heat dissipation method, the working fluid flows into the liquid cooling head through the pipeline, and the liquid cooling head contacts the heat generating surface of the electronic components such as processors to take away the heat generated by the electronic components such as processors during operation, thereby reducing the operating temperature of the electronic components such as processors and improving the operating efficiency.

[0005] However, as the demand for heat dissipation increases, how to further reduce the operating temperature of the motor in the liquid cooling head will help improve the performance and efficiency of the liquid cooling head, and thus improve the performance and efficiency of electronic products. SUMMARY

[0006] The summary is intended to provide a simplified summary of the disclosure to enable the reader to quickly understand the general nature of the disclosure. The summary is not a complete overview of the disclosure, and its purpose is not to indicate important / critical elements of the embodiments of the invention or to define the scope of the invention.

[0007] One object of the summary is to provide a liquid cooling head to effectively improve the heat dissipation efficiency of the liquid cooling head and further improve the operating efficiency of electronic products.

[0008] To achieve the above-mentioned purpose, one technical embodiment of the summary relates to a liquid cooling head comprising an upper shell, an impeller, a lower shell and a toothed fin. The upper shell has an inlet and an outlet, and the upper shell is fixed on the lower shell, and the impeller is arranged between the upper shell and the toothed fin. In addition, the toothed fin is fixed to the lower shell, and the impeller sucks the heat dissipation liquid entering from the inlet, so that the heat dissipation liquid passes through the toothed fin and is upwardly extracted by the impeller to be discharged from the outlet.

[0009] In some embodiments, the impeller comprises at least one axial blade and at least one centrifugal blade. The centrifugal blade is installed above the axial blade, wherein the axial blade extracts the heat dissipation liquid from the lower direction to the centrifugal blade.

[0010] In some embodiments, the impeller further comprises a hub and a rotating ring. The axial blades are mounted around the hub, and the rotating ring is mounted around the axial blades.

[0011] In some embodiments, the impeller further comprises a plurality of permanent magnets fixed to the periphery of the rotating ring.

[0012] In some embodiments, the liquid cooling head further comprises an intermediate shell, and the intermediate shell comprises an opening, and the impeller is disposed in the opening of the intermediate shell.

[0013] In some embodiments, at least one centrifugal blade of the impeller is disposed above the intermediate shell, and the rotating ring of the impeller is disposed in the opening of the intermediate shell.

[0014] In some embodiments, the upper shell further comprises a flange and a rotating shaft, the rotating shaft is fixed in the flange, the flange passes through a flange hole of the impeller, and the rotating shaft passes through a shaft hole of the hub so that the impeller rotates around the rotating shaft.

[0015] In some embodiments, the liquid cooling head further comprises a stator fixed to the intermediate shell, and the stator is immersed in the heat dissipation liquid.

[0016] In some embodiments, the stator comprises an upper wire holder, a lower wire holder, a plurality of silicon steel sheets, and a coil. The silicon steel sheets are fixed between the upper wire holder and the lower wire holder, and the coil is wound around the silicon steel sheets, and the upper wire holder, the lower wire holder, the silicon steel sheets, and the coil are immersed in the heat dissipation liquid.

[0017] In some embodiments, the silicon steel sheets further comprise a waterproof protective layer coated on the outer side of the silicon steel sheets. In some embodiments, the waterproof protective layer comprises epoxy, chemical nickel plating, or ultraviolet curable adhesive.

[0018] In some embodiments, the upper shell further comprises a water inlet channel flange to form an arc-shaped water inlet channel connected to the water inlet to guide the heat dissipation liquid to flow through the upper shell and the intermediate shell to the lower fluted heat dissipation fins.

[0019] In some embodiments, a drainage space is formed between the water inlet channel flange and the flange of the upper shell to accommodate the centrifugal blades, and the drainage space is connected to the water outlet, and the arc-shaped water inlet channel is located on the side of the water inlet channel flange opposite to the drainage space.

[0020] In some embodiments, the lower shell comprises a lower cover flange, two lower cover water inlets, and a lower cover water outlet, the lower cover water outlet is formed in the middle of the lower cover flange, the two lower cover water inlets are respectively located on both sides of the lower cover flange, and the lower cover flange is sleeved on the rotating ring of the impeller.

[0021] Therefore, the aforementioned liquid cooling head can utilize the inverted water pump to draw the heat dissipation liquid from the water inlet at the top to the heat dissipation fins at the bottom, and flow through the stator and the rotor, effectively reducing the temperature of the heat dissipation fins, the stator and the rotor in the liquid cooling head, improving the heat dissipation efficiency of the liquid cooling head, and utilizing the pressure of the heat dissipation liquid when the impeller rotates to lift the impeller upwards, which can further reduce the friction force when the impeller rotates, and further improve the working efficiency of the liquid cooling head. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to make the above and other objects, features, advantages and embodiments of the present disclosure more apparent, the following describes the drawings in the specification:

[0023] Figure 1 An exploded schematic view of a liquid cooling head according to an embodiment of the present application.

[0024] Figure 2 A side view schematic view of the liquid cooling head shown in Figure 1

[0025] Figure 3 A top view schematic view of the liquid cooling head shown in Figure 1

[0026] Figure 4 A cross-sectional view of an impeller of the liquid cooling head.

[0027] Figure 5 A bottom view schematic view of an upper housing of the liquid cooling head.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 100: liquid cooling head

[0030] 110: upper housing

[0031] 112: water inlet

[0032] 114: water outlet

[0033] 120: impeller

[0034] 122: axial blade

[0035] 124: centrifugal blade

[0036] 125: flange hole

[0037] 130: middle housing

[0038] 132: opening

[0039] 134: upper surface

[0040] 140: stator

[0041] 142: silicon steel sheet​​

[0042] 144: upper wire holder

[0043] 146: lower wire holder

[0044] 148: coil

[0045] 150: lower housing

[0046] 152: lower cover flange

[0047] 154: lower cover water inlet

[0048] 156: lower cover water outlet

[0049] 160: gullet fin

[0050] 201-208: arrow direction

[0051] 210: flange

[0052] 220: rotating shaft

[0053] 230: wheel hub

[0054] 240: shaft hole

[0055] 250: accommodating groove

[0056] 252: notch

[0057] 260: rotating ring

[0058] 270: permanent magnet

[0059] 280: water inlet passage flange

[0060] 290: arc-shaped water inlet passage

[0061] 295: drainage space DETAILED DESCRIPTION

[0062] The following detailed description is provided to aid in understanding the present disclosure, but is not intended to limit the scope of the disclosure. The description is provided with reference to the accompanying drawings, which are not drawn to scale. In the drawings, like numerals refer to like elements throughout the several views. The following detailed description is provided with reference to the accompanying drawings, which are not drawn to scale.

[0063] In addition, the terminology used in the description and the claims herein is generally intended to be construed in a literal sense and not in a restrictive sense, unless otherwise indicated herein. Certain terms are discussed below or elsewhere in the specification in order to provide additional guidance to the skilled artisan in understanding the description of the present disclosure.

[0064] In the embodiments and claims, the articles "a", "an", and "the" are each intended to mean one or more unless otherwise indicated by the context to be directed to a singular form, and the indefinite article "a" is also intended to mean "the" unless otherwise indicated. The use of the terms "first" and "second" with respect to various elements in the claims are generally used only to distinguish a certain element, but not to imply a particular order or sequence of the elements.

[0065] Also, the use of the terms "including", "comprising", "having" and "containing" are used herein to mean "including but not limited to".

[0066] Figure 1 An exploded view of a liquid cooling head according to an embodiment of the present disclosure, Figure 2 a side cross-sectional view thereof, Figure 3 a top cross-sectional view thereof. Furthermore, Figure 4 a cross-sectional view of an impeller of the liquid cooling head, and Figure 5 a bottom view of an upper housing of the liquid cooling head.

[0067] First referring to Figures 1 to 3 , the liquid cooling head 100 comprises an upper housing 110, an impeller 120, an intermediate housing 130, a stator 140, a lower housing 150, and a serrated fin 160. The upper housing 110 has an inlet 112 and an outlet 114, and the upper housing 110 is fixed on the lower housing 150. The intermediate housing 130 is fixed between the upper housing 110 and the lower housing 150. The impeller 120 is also disposed between the upper housing 110 and the serrated fin 160, and the intermediate housing 130 comprises an opening 132, through which the impeller 120 is disposed.

[0068] Furthermore, the shoveling fins 160 are fixed to the lower housing 150. When the impeller 120 sucks the heat-dissipating liquid from the water inlet 112, the heat-dissipating liquid first enters the arc-shaped water inlet flow channel 290 in the direction of the arrow 201, then flows downward in the direction of the arrow 202 through the flow channel between the intermediate housing 130 and the upper housing 110, and then flows to the lower side of the intermediate housing 130 in the direction of the arrow 203, and the stator 140 is immersed in the heat-dissipating liquid to improve the heat-dissipating effect of the stator 140. Furthermore, the heat-dissipating liquid enters the flow channel between the heat-dissipating fins of the shoveling fins 160 in the direction of the arrow 204, and flows to the middle in the direction of the arrow 205 to take away the heat on the shoveling fins 160. Then, the heat-dissipating liquid is sucked upward by the rotating impeller 120 in the axial direction of the arrow 206, and then is thrown out of the impeller 120 in the centrifugal direction of the arrow 207, and finally is discharged from the water outlet 114 in the direction of the arrow 208.

[0069] In some embodiments, the stator 140 is fixed to the intermediate housing 130, and the stator 140 is immersed in the heat-dissipating liquid, so that the heat-dissipating liquid in the liquid cooling head 100 can be effectively used to dissipate heat of the stator 140, the impeller 120 and the shoveling fins 160, thereby effectively improving the heat-dissipating efficiency of the liquid cooling head 100, and reducing the temperature of the stator 140, the impeller 120 and the shoveling fins 160.

[0070] In some embodiments, the intermediate housing 130 comprises a receiving groove 250, and the stator 140 is arranged in the receiving groove 250, and the opening 252 of the receiving groove 250 is located on the side of the intermediate housing 130 facing the lower housing 150.

[0071] In some embodiments, referring to Figure 4 , the impeller 120 comprises a hub 230, a rotating ring 260, at least one axial blade 122, and at least one centrifugal blade 124. The centrifugal blade 124 is arranged above the axial blade 122, the axial blade 122 is arranged between the hub 230 and the rotating ring 260, in other words, the axial blade 122 is arranged around the hub 230, and the rotating ring 260 is arranged around the axial blade 122. A flow channel is formed between the hub 230 and the rotating ring 260, the heat-dissipating liquid is sucked upward from the lower side to the position of the centrifugal blade 124 by the axial blade 122, and then is thrown out of the impeller 120 by the centrifugal blade 124.

[0072] In some embodiments, the impeller 120 further comprises a plurality of permanent magnets 270 fixed to the periphery of the rotating ring 260 to form a rotor.

[0073] In some embodiments, the centrifugal blades 124 of the impeller 120 are disposed above the middle casing 130, the rotating ring 260 of the impeller 120 is disposed through the opening 132 of the middle casing 130, the diameter of the centrifugal blades 124 is greater than the diameter of the opening 132 of the middle casing 130, and the diameter of the permanent magnet 270 of the rotating ring 260 of the impeller 120 is less than the diameter of the opening 132 of the middle casing 130.

[0074] In some embodiments, the upper casing 110 further comprises a flange 210 and a rotating shaft 220, the flange 210 is disposed through the flange hole 125 of the upper surface of the impeller 120, and the rotating shaft 220 is fixed in the flange 210 and disposed through the shaft hole 240 of the hub 230, so that the impeller 120 is stably rotated around the rotating shaft 220. In an embodiment, the shaft hole 240 is a through hole penetrating the center of the hub 230, but not limited thereto.

[0075] In some embodiments, the stator 140 comprises an upper frame 144, a lower frame 146, a plurality of silicon steel sheets 142, and a coil 148. The plurality of silicon steel sheets 142 are stacked with each other and fixed between the upper frame 144 and the lower frame 146, and the coil 148 is disposed around the silicon steel sheets 142. It is worth noting that the upper frame 144, the lower frame 146, the silicon steel sheets 142, and the coil 148 are immersed in the heat dissipation liquid to effectively reduce the working temperature.

[0076] In some embodiments, the silicon steel sheets 142 further comprise a waterproof protective layer coated on the outer side of the silicon steel sheets 142, such as epoxy resin, chemical nickel plating, or ultraviolet glue.

[0077] In some embodiments, referring to Figure 2 and Figure 5 the upper casing 110 further comprises a water inlet channel flange 280 protruding downward to tightly fit the upper surface 134 of the middle casing 130, so that the water inlet channel flange 280 and the flange 210 form a drainage space 295 accommodating the centrifugal blades 124, and the drainage space 295 is communicated with the water outlet 114, and the side of the water inlet channel flange 280 relative to the drainage space 295 forms an arc-shaped water inlet channel 290 communicated with the water inlet 112, so as to effectively guide the heat dissipation liquid to flow to the lower tooth-shaped heat dissipation fins 160 through the upper casing 110 and the middle casing 130.

[0078] In some embodiments, the diameter of the shaft hole 240 of the hub 230 is greater than the diameter of the rotating shaft 220, so that the impeller 120 can be rotated around the rotating shaft 220.

[0079] In some embodiments, referring to Figure 1 and Figure 2The lower housing 150 includes a lower cover flange 152, two lower cover water inlets 154, and a lower cover water outlet 156. The lower cover water outlet 156 is formed in the middle of the lower cover flange 152, and the two lower cover water inlets 154 are respectively located on both sides of the lower cover flange 152. In other words, the two lower cover water inlets 154 are respectively located on both sides of the lower cover water outlet 156, and the lower cover water outlet 156 is located between the two lower cover water inlets 154, so that the heat dissipation liquid can flow along the arrow direction 204 from both ends of the gill heat dissipation fin 160 into the flow channel between the heat dissipation fins, and flow along the arrow direction 205 to the middle, and then flow upward from the lower cover water outlet 156 into the impeller 120. In addition, the lower cover flange 152 is sleeved on the outside of the rotating ring 260 of the impeller 120, so that the rotating ring 260 of the impeller 120 is directly communicated with the lower cover water outlet 156, so as to more effectively and stably suck the heat dissipation liquid into the impeller 120.

[0080] Therefore, the liquid cooling head can use the inverted water pump to draw the heat dissipation liquid from the upper water inlet to the lower heat dissipation fin, and flow through the stator and the rotor, effectively reducing the temperature of the heat dissipation fin, the stator and the rotor in the liquid cooling head, improving the heat dissipation efficiency of the liquid cooling head, and using the pressure of the heat dissipation liquid when the impeller rotates to lift the impeller upward, which can further reduce the friction force when the impeller rotates, and further improve the working efficiency of the liquid cooling head.

[0081] The above-mentioned is only a preferred embodiment of the present application, and cannot limit the scope of the present application. Any simple equivalent changes and modifications made according to the claims and description of the present application are still within the scope of the present application. In addition, any embodiment or claim of the present application does not need to achieve all the purposes or advantages or features disclosed in the present application. In addition, the abstract and title are only used to assist the search of the patent document, and are not used to limit the claims of the present application. In addition, the terms "first", "second", etc. mentioned in the specification or claims are only used to name elements or distinguish different embodiments or ranges, and are not used to limit the upper or lower limit of the number of elements.

[0082] Although the present disclosure has been disclosed as above, it is not intended to limit the present disclosure. Any person with ordinary knowledge in the art can make various changes and modifications without departing from the concept and scope of the present disclosure, and therefore the protection scope of the present disclosure shall be subject to the claims.

Claims

1. A liquid cold head, comprising: Comprising: an upper housing having an inlet and an outlet; an impeller; a lower housing, wherein the upper housing is fixed on the lower housing; and a finned heat sink fixed on the lower housing, and the impeller is disposed between the upper housing and the finned heat sink, wherein the impeller draws a heat dissipation liquid entered from the inlet, and the heat dissipation liquid passes through the finned heat sink and is upwardly discharged from the outlet via the impeller, wherein the impeller comprises: at least one axial blade; and at least one centrifugal blade installed above the at least one axial blade, wherein the at least one axial blade draws the heat dissipation liquid upwardly from below to the at least one centrifugal blade; wherein the upper housing further comprises an inlet flow channel flange to form an arc-shaped inlet flow channel communicated with the inlet to guide the heat dissipation liquid to flow downwardly through the upper housing and the intermediate housing to the finned heat sink, wherein a drainage space is formed between the inlet flow channel flange and the flange of the upper housing to accommodate the centrifugal blade, and the drainage space is communicated with the outlet, and the arc-shaped inlet flow channel is located on the side of the inlet flow channel flange opposite to the drainage space.

2. The liquid cooling head of claim 1, wherein the impeller further comprises: a hub, wherein the at least one axial blade is installed around the hub; and a rotating ring installed around the at least one axial blade.

3. The liquid cooling head of claim 2, wherein the impeller further comprises: a plurality of permanent magnets fixed on the periphery of the rotating ring.

4. The liquid cooling head of claim 3, wherein the intermediate housing comprises an opening, and the impeller is disposed in the opening of the intermediate housing.

5. The liquid cold head of claim 4, wherein, The at least one centrifugal blade of the impeller is disposed above the intermediate housing, and the rotating ring of the impeller is disposed in the opening of the intermediate housing.

6. The liquid cold head of claim 5, wherein, The upper housing further comprises a flange, and a rotating shaft is fixed in the flange, the flange passes through a flange hole of the impeller, and the rotating shaft passes through a shaft hole of the hub to enable the impeller to rotate around the rotating shaft.

7. The liquid cooling head of claim 4, further comprising: a stator fixed on the intermediate housing, and the stator is immersed in the heat dissipation liquid.

8. The liquid cooling head of claim 7, wherein the stator comprises: an upper wire holder; a lower wire holder; a plurality of silicon steel sheets fixed between the upper wire holder and the lower wire holder; and a coil wound around the plurality of silicon steel sheets, wherein the upper wire holder, the lower wire holder, the plurality of silicon steel sheets, and the coil are all immersed in the heat dissipation liquid.

9. The liquid cooling head of claim 8, wherein the plurality of silicon steel sheets further comprises a waterproof protective layer coated on the outer side of the plurality of silicon steel sheets.

10. The liquid cooling head of claim 9, wherein the waterproof protective layer comprises epoxy resin, chemical nickel plating, or ultraviolet glue.

11. The liquid cold plate of claim 2, wherein the lower housing includes a lower cover flange, two lower cover water inlets, and a lower cover water outlet, the lower cover water outlet is formed in the middle of the lower cover flange, the two lower cover water inlets are located on both sides of the lower cover flange, and the lower cover flange is sleeved on the rotating ring of the impeller.

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