Water cooling head

Abstract

A water cooling head comprises a shell, a fan blade, a pumping impeller and a motor. The shell is provided with a gas chamber and a liquid chamber, and the liquid chamber is not communicated with the gas chamber. The fan blades are rotatably located in the gas chamber. The pumping impeller is rotatably located in the liquid chamber. The motor comprises a circuit board, a stator assembly, a fan blade rotor and an impeller rotor. The circuit board is located in the gas chamber. The stator assembly is arranged on the circuit board. The fan blade rotor and the impeller rotor are arranged on the fan blades and the pump impeller respectively. The fan blade rotor and the impeller rotor are used for generating a magnetic field with the same stator assembly so as to drive the fan blades and the pump impeller to rotate.

Description

Technical Field

[0001] The utility model relates to a water block, in particular to a water block of a cooling fan. Background Art

[0002] In the past, for a water block with a fan, a ready-made fan assembly was directly installed on the water block. Since the fan assembly has its own fan motor and the water block has its own pump motor, the overall height of the water block with a fan is too high, which is not conducive to being applied to products with a narrow internal space. In addition, such a water block with a fan has too high a cost and poor operating efficiency. Therefore, currently, R & D personnel in this field are committed to improving the above problems. Summary of the Utility Model

[0003] The utility model aims to provide a water block, which can solve the problems of too high height, too high cost and poor operating efficiency of the water block with a fan in the prior art.

[0004] A water block disclosed in an embodiment of the utility model includes a housing, a fan blade, a pump impeller and a motor. The housing has a gas chamber and a liquid chamber, and the liquid chamber is not communicated with the gas chamber. The fan blade is rotatably located in the gas chamber. The pump impeller is rotatably located in the liquid chamber. The motor includes a circuit board, a stator assembly, a blade rotor and an impeller rotor. The circuit board is located in the gas chamber, and the stator assembly is arranged on the circuit board. The blade rotor and the impeller rotor are respectively arranged on the fan blade and the pump impeller. The blade rotor and the impeller rotor are used to generate a magnetic field with the same stator assembly to drive the fan blade and the pump impeller to rotate.

[0005] In an embodiment of the utility model, the rotation axes of the fan blade and the pump impeller overlap, and in the direction parallel to the rotation axes of the fan blade and the pump impeller, the stator assembly is located between the blade rotor and the impeller rotor.

[0006] In an embodiment of the utility model, the blade rotor is located on the side of the fan blade adjacent to the stator assembly.

[0007] In an embodiment of the utility model, the impeller rotor is located on the side of the pump impeller adjacent to the stator assembly.

[0008] In an embodiment of the utility model, the housing includes a base, an upper cover and a partition. The base and the upper cover are assembled together to form an internal space. The partition is located in the internal space and fixed to the base to divide the internal space into the gas chamber and the liquid chamber. The fan blade is rotatably arranged on the upper cover, and the pump impeller is rotatably arranged on the partition.

[0009] In an embodiment of the present utility model, the upper cover includes a central portion, a plurality of connecting portions, and an enclosing portion. The central portion is connected to the enclosing portion through the plurality of connecting portions. The fan blade is rotatably disposed on the central portion, and the enclosing portion is assembled with the base.

[0010] In an embodiment of the present utility model, the enclosing portion includes an annular wall body and an inner flange structure. The central portion is connected to the annular wall body of the enclosing portion through the plurality of connecting portions. One side of the annular wall body is assembled with the base. The inner flange structure is connected to the inner peripheral edge of the other side of the annular wall body. The inner flange structure surrounds to form an air inlet. The annular wall body has at least one air outlet. The air inlet and the at least one air outlet communicate with the gas chamber.

[0011] In an embodiment of the present utility model, it further includes a wind guide cover. The wind guide cover is disposed on the inner flange structure of the enclosing portion. The wind guide cover surrounds to form a wind guide opening, and the wind guide opening communicates with the air inlet.

[0012] In an embodiment of the present utility model, it further includes a light bar. The light bar is disposed in the wind guide cover. The light bar has a plurality of light emitting units, and the light emitting surfaces of the plurality of light emitting units face the fan blade.

[0013] In an embodiment of the present utility model, the number of the at least one air outlet is multiple, and the air outlets are arranged at intervals along the circumferential direction of the annular wall body.

[0014] According to the water-cooled head disclosed in the above embodiments, by arranging the stator assembly of the motor on the circuit board, and respectively arranging the fan blade rotor and the impeller rotor on the fan blade and the pump impeller, and the fan blade rotor and the impeller rotor can generate a magnetic field with the same stator assembly to drive the fan blade and the pump impeller to rotate. Such a configuration can enable the rotation of the fan blade and the pump impeller to share the same stator assembly and circuit board, which is beneficial to reducing the overall height of the water-cooled head, reducing the cost of the water-cooled head, and improving the operation efficiency of the water-cooled head.

[0015] The above description of the content of the present utility model and the following description of the embodiments are used to demonstrate and explain the principle of the present utility model, and provide a further explanation of the scope of the patent application of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of a water-cooled head disclosed according to an embodiment of the present utility model;

[0017] Figure 2 is Figure 1 a partial exploded view of the water-cooled head;

[0018] Figure 3 and Figure 4 isFigure 1 Exploded view of another part of the water block from different perspectives;

[0019] Figure 5 is Figure 1 Top view of the water block;

[0020] Figure 6 is Figure 5 Cross-sectional view taken along the cutting plane line 6-6 of

[0021] Figure 7 is Figure 5 Cross-sectional view taken along the cutting plane line 7-7 of

[0022] Figure 8 is Figure 5 Cross-sectional view taken along the cutting plane line 8-8 of

[0023]

Symbol Explanation

[0024] 1: Water block

[0025] 10: Housing

[0026] 11: Base

[0027] 111: Liquid inlet

[0028] 112: First connecting channel

[0029] 113: Second connecting channel

[0030] 114: Liquid outlet

[0031] 12: Upper cover

[0032] 121: Central part

[0033] 122: Connecting part

[0034] 123: Enclosure part

[0035] 1231: Ring-shaped wall

[0036] 12311: Gas outlet

[0037] 1232: Inner flange structure

[0038] 12321: Gas inlet

[0039] 13: Assembly piece

[0040] 14: First partition

[0041] 15: Second partition

[0042] 151: First through hole

[0043] 152: Second through hole

[0044] 20: Fan blade

[0045] 30: Pump impeller

[0046] 40: Motor

[0047] 41: Circuit board

[0048] 42: Stator assembly

[0049] 421: Coil

[0050] 43: Blade rotor

[0051] 44: Impeller rotor

[0052] 50: First pivot

[0053] 60: Bearing

[0054] 70: Air guide cover

[0055] 71: Air guide opening

[0056] 80: Light bar

[0057] 81: Light emitting unit

[0058] 811: Light emitting surface

[0059] 90: Heat conducting box

[0060] 91: Base body

[0061] 92: Cover plate

[0062] 921: Inlet

[0063] 922: Outlet

[0064] 93: Fin structure

[0065] 94: Flow blocking member

[0066] 941: Connecting opening

[0067] 100: Second pivot

[0068] S: Internal space

[0069] AC: Gas chamber

[0070] LC: Liquid chamber

[0071] LC1: First chamber

[0072] LC2: Second chamber

[0073] HC: Heat exchange chamber

[0074] P1, P2: Pipe fittings

[0075] A1, A2: Axis of rotation Detailed implementation manners

[0076] Please refer to Figures 1 to 4 . Figure 1 FIG. is a perspective view of a water block disclosed according to an embodiment of the present invention. Figure 2 is Figure 1 a partial exploded view of the water block of Figure 3 and Figure 4 is Figure 1 another partial exploded view of the water block of

[0077] In this embodiment, the water block 1 is used to be coupled with a heat source (not shown) on a main board (not shown), where the heat source is, for example, a CPU or a GPU. The water block 1 includes a housing 10, a fan blade 20, a pump impeller 30, and a motor 40 (please first refer to Figure 6 ).

[0078] Next, please refer to Figure 2 , Figure 5 and Figure 6 . Figure 5 is Figure 1 a top view of the water block of Figure 6 is Figure 5 a cross-sectional view taken along the cutting plane line 6-6 of

[0079] The housing 10 includes a base 11, an upper cover 12, an assembly piece 13, and a first partition member 14. The upper cover 12 includes a central portion 121, a plurality of connecting portions 122, and an enclosing wall portion 123, and the enclosing wall portion 123 includes an annular wall body 1231 and an inner flange structure 1232. The central portion 121 is connected to the annular wall body 1231 of the enclosing wall portion 123 through the connecting portions 122. One side of the annular wall body 1231 is assembled with the base 11 and they jointly clamp the assembly piece 13. The assembly piece 13 is used for screws to pass through and is fixed to the main board by screws. The inner flange structure 1232 is connected to the inner peripheral edge of the other side of the annular wall body 1231. The inner flange structure 1232 surrounds to form an air inlet 12321. The annular wall body 1231 has a plurality of air outlet openings 12311, and these air outlet openings 12311 are arranged at intervals along the circumferential direction of the annular wall body 1231.

[0080] In this embodiment, the base 11 and the upper cover 12 jointly form an internal space S. The first partition member 14 is located within the internal space S and fixed to the base 11 to divide the internal space S into a gas chamber AC and a liquid chamber LC, wherein the air inlet 12321 and these air outlets 12311 communicate with the gas chamber AC. It should be noted that the number of the air outlets 12311 is not intended to limit the present invention and can be adjusted according to requirements, such as being adjusted to a single one.

[0081] In this embodiment, the water-cooling head 1 may further include a first pivot 50, a bearing 60, a wind guide cover 70 and a light bar 80, for example. The fan blade 20 is an axial flow fan blade, for example. The fan blade 20 is rotatably disposed at the central portion 121 of the upper cover 12 through the first pivot 50 and the bearing 60. The wind guide cover 70 is fixed to the inner flange structure 1232 of the peripheral wall portion 123 of the upper cover 12. The wind guide cover 70 surrounds to form a wind guide opening 71, and the wind guide opening 71 communicates with the air inlet 12321 to guide air to the air inlet 12321 and enter the gas chamber AC. The light bar 80 is disposed within the wind guide cover 70 and has a plurality of light-emitting units 81. These light-emitting units 81 are light-emitting diodes, for example. The light-emitting surfaces 811 of these light-emitting units 81 face the fan blade 20. These light-emitting units 81 can project light onto the fan blade 20 to produce a dazzling effect.

[0082] It should be noted that the wind guide cover 70 and the light bar 80 are optional components and can be omitted in other embodiments.

[0083] Next, please refer to Figures 3 to 8 . Figure 7 is a cross-sectional view taken along the cutting line 7-7 of Figure 5 . Figure 8 is a cross-sectional view taken along the cutting line 8-8 of Figure 5 .

[0084] In this embodiment, the housing 10 may further include a second partition member 15. The second partition member 15 is located within the liquid chamber LC and fixed to the base 11 to divide the liquid chamber LC into a first chamber LC1 and a second chamber LC2, wherein the second chamber LC2 is located between the first chamber LC1 and the gas chamber AC. The base 11 has a liquid inlet 111, a first connecting channel 112, a second connecting channel 113 and a liquid outlet 114. The second partition member 15 has a first through opening 151 and a second through opening 152. The liquid inlet 111 of the base 11 communicates with the first chamber LC1. The first chamber LC1 communicates with the second chamber LC2 through the first through opening 151 of the second partition member 15. The second chamber LC2 communicates with the first connecting channel 112 of the base 11 through the second through opening 152. The second connecting channel 113 of the base 11 communicates with the liquid outlet 114.

[0085] In this embodiment, the water block 1 may further include a heat conduction box 90. The heat conduction box 90 includes a base body 91, a cover plate 92, a plurality of fin structures 93 and a flow baffle 94. The cover plate 92 and the base body 91 together form a heat exchange chamber HC. These fin structures 93 are located in the heat exchange chamber HC and are thermally coupled to the base body 91. The flow baffle 94 is located in the heat exchange chamber HC and is between the cover plate 92 and these fin structures 93. The cover plate 92 has an inlet 921 and an outlet 922, and the flow baffle 94 has a communication port 941. The inlet 921 of the cover plate 92 is communicated with the heat exchange chamber HC through the communication port 941, and the outlet 922 of the cover plate 92 is directly communicated with the heat exchange chamber HC. The base body 91 of the heat conduction box 90 is fixed to the base 11, so that the first connection channel 112 of the base 11 is communicated with the heat exchange chamber HC through the inlet 921 of the cover plate 92 and the communication port 941 of the flow baffle 94, and the outlet 922 of the cover plate 92 is communicated with the liquid outlet 114 through the second connection channel 113 of the base 11.

[0086] In this embodiment, the base body 91 of the heat conduction box 90 is used to be thermally coupled to the heat source of the main board to conduct the heat generated by the heat source to these fin structures 93. In addition, the liquid inlet 111 and the liquid outlet 114 of the base 11 are respectively connected to the pipe fittings P1 and P2. The pipe fitting P1 can transport the coolant to the first chamber LC1 through the liquid inlet 111. Then, the coolant flows through the first through port 151 of the second partition 15, the second chamber LC2, the second through port 152 of the second partition 15, the first connection channel 112 of the base 11, the inlet 921 of the cover plate 92 and the communication port 941 of the flow baffle 94 into the heat exchange chamber HC, and exchanges heat with the fin structures 93. The coolant after absorbing heat then flows out of the water block 1 through the second connection channel 113 and the liquid outlet 114 of the base 11, and is then transported to a radiator (not shown) for cooling through the pipe fitting P2, for example. Then, the coolant will return to the water block 1 to repeat the above flow process.

[0087] It should be noted that the heat conduction box 90 is a selected component. In other embodiments, the water block may have no heat conduction box. In such a configuration, the first connection channel of the base can be directly communicated with the second connection channel.

[0088] In this embodiment, the water block 1 may further include a second pivot 100. The pump impeller 30 is located in the second chamber LC2 and is rotatably arranged on the first partition 14 and the second partition 15 through the second pivot 100. The rotation axis A2 of the pump impeller 30 overlaps with the rotation axis A1 of the fan blade 20.

[0089] The motor 40 includes a circuit board 41, a stator assembly 42, a fan rotor 43, and an impeller rotor 44. The circuit board 41 is located within the gas chamber AC and is fixed to the first partition 14. The circuit board 41 is electrically connected to the main board, for example, by plugging wires into a slot on the main board, such that the circuit board 41 is controlled by the main board. The stator assembly 42 includes a plurality of coils 421, and these coils 421 are disposed on one side of the circuit board 41 adjacent to the pump impeller 30. The fan rotor 43 and the impeller rotor 44 are, for example, magnets. The fan rotor 43 and the impeller rotor 44 are respectively disposed on the fan blade 20 and the pump impeller 30. In a direction parallel to the rotation axis A1 of the fan blade 20 and the rotation axis A2 of the pump impeller 30, the stator assembly 42 is located between the fan rotor 43 and the impeller rotor 44. The fan rotor 43 is located on one side of the fan blade 20 adjacent to the stator assembly 42, and the impeller rotor 44 is located on one side of the pump impeller 30 adjacent to the stator assembly 42

[0090] Next, the operation of the water block 1 will be described below. In Figures 6 to 8 the figure, the dashed arrows represent the direction of coolant flow, and the solid arrows represent the direction of air flow. When the stator assembly 42 is energized, a magnetic field is generated between the impeller rotor 44 and the stator assembly 42 to drive the pump impeller 30 to rotate, and a magnetic field is generated between the fan rotor 43 and the stator assembly 42 to drive the fan blade 20 to rotate. The rotating pump impeller 30 can drive the coolant entering the water block 1 to flow through the heat exchange chamber HC to allow the coolant to exchange heat with the fin structure 93, thereby removing the heat generated by the heat source. The rotating fan blade 20 can suck external cold air into the gas chamber AC from the air guide port 71 and the air inlet 12321, so that the external cold air flows through the circuit board 41 and the stator assembly 42 to dissipate heat from the circuit board 41 and the stator assembly 42. Then, the air can flow out of the gas chamber AC from the air outlet 12311 to dissipate heat from the electronic components on the main board.

[0091] In this embodiment, by disposing the stator assembly 42 of the motor 40 on the circuit board 41, the fan rotor 43 and the impeller rotor 44 are respectively disposed on the fan blade 20 and the pump impeller 30, and the fan rotor 43 and the impeller rotor 44 can generate a magnetic field with the same stator assembly 42 to drive the fan blade 20 and the pump impeller 30 to rotate. The rotation of the fan blade 20 and the pump impeller 30 can be achieved by sharing the same stator assembly 42 and the circuit board 41. Therefore, it is beneficial to reduce the overall height of the water block 1, reduce the cost of the water block 1, and improve the operating efficiency of the water block 1. For example, compared with the conventional method of directly installing an off-the-shelf fan on the water block, the height of the water block 1 in this embodiment is reduced by 25%, the operating efficiency is increased by 15%, and since a set of circuit board and stator assembly is saved, the cost is lower.

[0092] In this embodiment, since the rotation of the fan blade 20 and the pump impeller 30 share the same stator assembly 42 and circuit board 41 to achieve, it is beneficial to replace the fan blade 20 separately according to actual needs and adopt other types of blades, such as drum fan blades.

[0093] In addition, since the rotation of the fan blade 20 and the pump impeller 30 share the same stator assembly 42 and circuit board 41 to achieve, the rotation speeds of the fan blade 20 and the pump impeller 30 can be synchronously controlled to avoid waste of power consumption and reduce control complexity. For example, when the heat source (such as the CPU) is underloaded, the pump impeller 30 does not need to rotate at a high speed to maintain the efficient heat exchange efficiency of the coolant. Therefore, the motherboard controls the motor 40 to be underloaded to reduce the rotation speed of the pump impeller 30. At this time, the rotation speed of the fan blade 20 also decreases synchronously, and still can meet the heat dissipation requirements after the motor 40 is underloaded. In this way, waste of power consumption is avoided and the control complexity of the fan blade 20 and the pump impeller 30 is reduced.

[0094] Furthermore, compared with the conventional method of using a magnet to drive the pump impeller 30 to rotate in an off-the-shelf fan structure, the configuration in which the fan blade 20 and the pump impeller 30 share the same stator assembly 42 and circuit board 41 to achieve synchronous rotation speeds of the two can avoid load increase, and avoid different rotation speeds of the fan blade 20 and the pump impeller 30, and even avoid the problem that the pump impeller 30 cannot rotate due to the large rotation resistance caused by driving the liquid.

[0095] In addition, since the rotation of the fan blade 20 and the pump impeller 30 share the same stator assembly 42 and circuit board 41 to achieve, only one slot on the motherboard needs to be occupied for the wires connected to the circuit board 41 to be plugged in. Therefore, compared with the configuration in which the conventional off-the-shelf fan and the water cooling head still need to occupy two slots on the motherboard after being assembled, the water cooling head 1 of this embodiment can save the number of slots occupied on the motherboard.

[0096] In this embodiment, in the direction parallel to the rotation axis A1 of the fan blade 20 and the rotation axis A2 of the pump impeller 30, the stator assembly 42 is located between the fan rotor 43 and the impeller rotor 44, and there is an air gap between the stator assembly 42 and the fan rotor 43 and the impeller rotor 44, so that the motor 40 forms an axial air gap motor 40. In addition to driving the pump impeller 30, this axial air gap motor 40 can also drive the fan blade 20, and the driven fan blade 20 can dissipate heat from the stator assembly 42 and the circuit board 41 of the motor 40 to extend the life of the motor 40. In addition, in the configuration where the water cooling head 1 is installed on the motherboard and thermally coupled to a heat source such as the CPU, the driven fan blade 20 can also dissipate heat from the electronic components around the heat source on the motherboard.

[0097] On the other hand, since the motor 40 is an axial air-gap motor 40, the impeller rotor 44 is stably driven to rotate the pump impeller 30 at the same horizontal height under the action of the axial magnetic force, so that the up-and-down floating of the pump impeller 30 can be avoided to generate noise.

[0098] According to the water-cooled head disclosed in the above embodiment, by arranging the stator assembly of the motor on the circuit board, the fan rotor and the impeller rotor are respectively arranged on the fan blade and the pump impeller, and the fan rotor and the impeller rotor can generate a magnetic field with the same stator assembly to drive the fan blade and the pump impeller to rotate. The configuration can achieve the rotation of the fan blade and the pump impeller by sharing the same stator assembly and circuit board, so it is beneficial to reduce the overall height of the water-cooled head, reduce the cost of the water-cooled head and improve the operation efficiency of the water-cooled head.

[0099] Although the present invention is disclosed above with the foregoing preferred embodiments, it is not intended to limit the present invention. Any person skilled in the relevant art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be subject to the scope defined by the claims.

Claims

1. A water block, characterized in that, Comprising: A housing having a gas chamber and a liquid chamber, the liquid chamber not communicating with the gas chamber; A fan blade rotatably located in the gas chamber; A pump impeller rotatably located in the liquid chamber; and A motor including a circuit board, a stator assembly, a blade rotor, and an impeller rotor, the circuit board located in the gas chamber, the stator assembly disposed on the circuit board, the blade rotor and the impeller rotor respectively disposed on the fan blade and the pump impeller, the blade rotor and the impeller rotor configured to generate a magnetic field with the same stator assembly to drive the fan blade and the pump impeller to rotate.

2. The water block according to claim 1, characterized in that, The rotation axis of the fan blade and the rotation axis of the pump impeller overlap, and in a direction parallel to the rotation axes of the fan blade and the pump impeller, the stator assembly is located between the blade rotor and the impeller rotor.

3. The water block according to claim 2, characterized in that, The blade rotor is located on a side of the fan blade adjacent to the stator assembly.

4. The water block according to claim 2, characterized in that, The impeller rotor is located on a side of the pump impeller adjacent to the stator assembly.

5. The water block according to claim 1, characterized in that, The housing includes a base, an upper cover, and a partition member. The base and the upper cover are assembled together to form an internal space. The partition member is located in the internal space and fixed to the base to divide the internal space into the gas chamber and the liquid chamber. The fan blade is rotatably disposed on the upper cover, and the pump impeller is rotatably disposed on the partition member.

6. The water block according to claim 5, wherein The upper cover includes a central portion, a plurality of connecting portions, and an enclosing wall portion. The central portion is connected to the enclosing wall portion through the plurality of connecting portions. The fan blade is rotatably disposed on the central portion, and the enclosing wall portion is assembled with the base.

7. The water block according to claim 6, characterized in that, The enclosing wall portion includes an annular wall body and an inner flange structure. The central portion is connected to the annular wall body of the enclosing wall portion through the plurality of connecting portions. One side of the annular wall body is assembled with the base. The inner flange structure is connected to the inner peripheral edge of the other side of the annular wall body. The inner flange structure surrounds to form an air inlet, and the annular wall body has at least one air outlet. The air inlet and the at least one air outlet communicate with the gas chamber.

8. The water block according to claim 7, characterized in that, It further includes an air guide cover disposed on the inner flange structure of the enclosing wall portion. The air guide cover surrounds to form an air guide opening, and the air guide opening communicates with the air inlet.

9. The water block according to claim 8, characterized in that, It further includes a light bar disposed in the air guide cover. The light bar has a plurality of light emitting units, and the light emitting surfaces of the plurality of light emitting units face the fan blade.

10. The water block according to claim 7, characterized in that, The number of the at least one air outlet is plural, and the air outlets are arranged at intervals along the circumferential direction of the annular wall body.

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