TWI670462B - Cold plate - Google Patents

Abstract

The invention provides a water cooling head, which comprises a casing, a base, a water inlet channel, a drainage channel and a pump. The base and the shell define a working space together, the working space can be filled with the working medium, and the base is used to absorb the heat energy and transfer the heat energy to the working medium. The water inlet channel communicates with the working space and allows the cooled working medium to flow into the working space. The drainage channel communicates with the working space, and the working medium for heat absorption is discharged from the working space. The pump is installed in the casing. The pump includes a fan blade disposed in the action space and adjacent to the drainage channel for guiding the working medium to the drainage channel to discharge the action space. The fan blade includes a chassis and a cutout.

Description

Water cooling head

This case relates to a heat sink, especially a water cooling head.

It is known that the built-in water-cooling head of the pump rarely drives the working medium flow only by the pump blades. Therefore, in order to ensure that the working medium can perform a stable one-way circulation, There are many guiding structures formed on the casing or internal structure to assist the pumping fan blades. For example, the water-cooled head design disclosed in U.S. Patent Publication No. 8245764 uses impeller cover, intermediate member, and Guide structures such as connected passages separate the water-cooling head into two completely independent chambers to ensure that the working medium can be circulated unidirectionally. However, too many guiding structures tend to increase the structural complexity of the water-cooling head and compress it to the space inside the water-cooling head, which cannot reduce the overall height of the water-cooling head, and also increases the cost of production and manufacturing. Therefore, if the composition of the water cooling head can be simplified, and the pump blades can rely on its own structure to guide the working medium for one-way circulation, it will be more in line with the needs of the industry.

Aiming at the lack of traditional water-cooling heads, this case proposes an improved water-cooling head. The structure of the fan blades is used to attract and guide the working medium flow in the working space. Therefore, the structure inside the water-cooling head can be simplified, and the water-cooling head can be reduced in volume At the same time, it can also improve the efficiency of heat dissipation.

The invention provides a water cooling head, which comprises a casing, a base, a water inlet channel, a drainage channel and a pump. The base and the shell jointly define a working space, and the working space can be The working medium is filled, and the base is used to absorb the thermal energy and transfer the thermal energy to the working medium. The water inlet channel communicates with the working space and allows the cooled working medium to flow into the working space. The drainage channel communicates with the working space, and the working medium for heat absorption is discharged from the working space. The pump is installed in the casing. The pump includes a fan blade disposed in the action space and adjacent to the drainage channel for guiding the working medium to the drainage channel to discharge the action space. The fan blade includes a chassis and a cutout.

In an embodiment, the chassis divides the working space into a heat absorption space and a drainage space, and the working medium in the heat absorption space and the drainage space is fluidly coupled through the hollow portion.

In one embodiment, the fan blade further includes a top wall, the top wall and the bottom plate are spaced apart, and a plurality of compartment walls are connected between the bottom plate and the top wall, thereby separating the drainage space into a plurality of drainage chambers.

In one embodiment, the working medium transferred upward from the hollowed portion, after touching the top wall, will turn and move to the drainage chamber.

In one embodiment, the fan blade further includes a boss extending from the boundary between the hollowed out portion and the chassis toward the heat absorption space, so that the working medium moves from the heat absorption space to the drainage space.

In one embodiment, a pressing structure is formed on an inner surface of the boss.

In one embodiment, the pressure structure may be selected from a spiral structure or a turbine structure.

In one embodiment, the chassis has a spoiler structure extending from the lower surface of the chassis toward the base.

In one embodiment, the spoiler structure is a centrifugal blade structure.

In one embodiment, the fan blade has a shaft sleeve, and the shaft sleeve can be sleeved on a shaft rod, so that the fan blade can rotate along the shaft rod.

In one embodiment, the shaft rod is mounted on a fixing member, and the fixing member is mounted on the base.

In one embodiment, the shaft sleeve and the chassis are connected by a plurality of ribs.

In one embodiment, a pressure structure is formed on the surface of the sleeve in the working space.

In one embodiment, the pressure structure may be selected from a spiral structure or a turbine structure.

In one embodiment, the configuration of the hollow portion is adjacent to the sleeve.

In one embodiment, a heat-absorbing bottom surface is provided on the outer side of the base, which can be in contact with a heat source to absorb heat energy, and a heat transfer structure is provided on the inner side of the base to transfer heat energy to the working medium.

In one embodiment, the water inlet channel is adjacent to the heat transfer structure, and the cooled working medium passes through the heat transfer structure to absorb thermal energy.

In one embodiment, the water cooling head can be connected to a heat exchange device, which discharges the working medium from the drainage channel to cool down, and flows into the working space through the water inlet channel.

The invention provides a water cooling head, which includes an action space and a fan blade. The working space includes a heat absorption space and a drainage space, and the working space can be filled with a working medium. The fan blade is arranged in the working space. The fan blade includes a chassis and a hollowed out part. The chassis divides the working space into a heat absorbing space and a drainage space. The working medium in the heat absorbing space and the drainage space can be liquid-coupled through the hollow part.

In one embodiment, it further includes a water inlet channel and a drainage channel, the water inlet channel communicates with the heat absorption space, and the drainage channel communicates with the drainage space.

In one embodiment, the fan blade further includes a top wall, the top wall and the chassis are spaced apart, and a plurality of compartment walls are connected between the chassis and the top wall, thereby separating the drainage space into a plurality of rows. The water chamber, and the working medium transmitted upward from the hollow portion, after touching the top wall, will turn and move to the drainage chamber.

In one embodiment, the fan blade further includes a boss extending from the boundary between the hollowed out portion and the chassis toward the heat absorption space, so that the working medium moves from the heat absorption space to the drainage space.

In one embodiment, a pressing structure is formed on an inner surface of the boss.

In one embodiment, the pressure structure may be selected from a spiral structure or a turbine structure.

In one embodiment, the fan blade has a shaft sleeve, and the shaft sleeve can be sleeved on a shaft rod to allow the fan blade to rotate along the shaft rod, and the configuration of the hollow portion is adjacent to the shaft sleeve.

In one embodiment, the chassis has a spoiler structure extending from the lower surface of the chassis toward the base.

In one embodiment, the spoiler structure is a centrifugal blade structure.

1‧‧‧Water Block

2‧‧‧shell

2a‧‧‧ hatch

21‧‧‧ water inlet channel

22‧‧‧ drainage channel

23‧‧‧Water inlet connector

24‧‧‧ Drain connector

3‧‧‧ base

31‧‧‧Endothermic bottom

32‧‧‧ heat transfer structure

32A‧‧‧Front

32B‧‧‧Back

4‧‧‧ pump

41‧‧‧Circuit Board

42‧‧‧First magnetic element

43‧‧‧Second magnetic element

44‧‧‧fan leaves

441‧‧‧Top wall

442‧‧‧Chassis

443‧‧‧partition wall

444‧‧‧Shaft sleeve

4441‧‧‧Pressure structure

445‧‧‧Draining chamber

446‧‧‧Hollow

447‧‧‧Boss

4471‧‧‧Pressure structure

448‧‧‧ Spoiler structure

449‧‧‧ rib

5‧‧‧action space

51‧‧‧ Heat absorption space

52‧‧‧ drainage space

6‧‧‧ shaft rod

7‧‧‧Fixed parts

FIG. 1A is a perspective view of a water cooling head provided by an embodiment of the present invention.

FIG. 1B is a perspective view of a water cooling head according to an embodiment of the present invention from another perspective.

FIG. 2 is a cross-sectional view of the water-cooled head taken along the line 2a-2a in FIG. 1A.

FIG. 3 is a partially enlarged schematic diagram of FIG. 2.

FIG. 4A is a perspective view of a water cooling head according to an embodiment of the present invention with respect to a fan blade, a shaft rod, a fixing member, and a base.

FIG. 4B is a three-dimensional exploded view of the inside of the water cooling head provided by the present invention with respect to the fan blade, the shaft rod, the fixing member and the base.

Figure 5 shows the water cooling head provided by the present invention. A schematic side view of a thermal structure sucked into a fan blade.

FIG. 6 is a top view of a water cooling head provided by the present invention, when a working medium inside the water cooling head is sucked into a fan blade through a water inlet channel and a heat transfer structure.

FIG. 7 is a schematic side view showing a water cooling head provided by the present invention, in which a working medium inside is discharged from a heat transfer structure through a fan blade to a drainage channel.

FIG. 8A to FIG. 8D are perspective views of the fan blades at different viewing angles.

9A and 9B show a perspective view and a partial cross-sectional view of a fan blade.

FIG. 9C is a perspective view showing a shaft sleeve of a fan blade with a spiral pressing structure formed on a surface thereof. FIG.

FIG. 9D is a perspective view showing that the boss of the fan blade is formed with a spiral pressure structure on the inner surface.

The invention provides a water cooling head with a built-in pump. Please refer to FIG. 1A, FIG. 1B, FIG. 2 and FIG. 3 at the same time. The water cooling head 1 includes a casing 2, a base 3, and a pump 4. When the housing 2 and the base 3 are combined by locking or other fixing means, the housing 2 and the base 3 can jointly define a working space 5 for the working medium to flow, so that the user or the manufacturer can later The working space 5 is filled with a working medium to allow the water cooling head 1 to function as a heat sink. The housing 2 includes a water inlet channel 21 and a drainage channel 22. The water inlet channel 21 is connected to the working space 5 to allow the cooled working medium to flow into the working space 5, and the drainage channel 22 is also connected to the working space 5. , Used to let the heat-absorbing working medium out of the working space 5. In addition, the water inlet channel 21 and the drainage channel 22 can be extended outwards or equipped with a water inlet joint 23 and a water drainage joint 24, respectively. The water inlet joint 23 and the water drainage joint 24 can be arranged vertically or horizontally, as long as they can It can be connected with other heat dissipation devices such as water cooling radiators or pipes.

The base 3 has a heat-absorbing bottom surface 31 on the outer side, and a heat-transfer structure 32 is provided or formed on the inner side. When the heat-absorbing bottom surface 31 contacts the heat source, it will absorb its heat energy and transfer it to the heat-transfer structure 32. Transfer of thermal energy through contact with a working medium (not shown) To the working medium. The heat transfer structure 32 of the base 3 can choose cutting fins (skivedfin) or other columnar, sheet, or even irregular fins. As long as the area in contact with the working medium can be increased, Faster transfer of thermal energy to the working medium. When the housing 2 and the base 3 are combined by locking or other fixing means, an action space 5 can be defined for the working medium to flow.

Please refer to FIG. 2 and FIG. 3. The pump 4 disposed in the water cooling head 1 is installed in the housing 2 and includes a circuit board 41, a first magnetic element 42, a second magnetic element 43, and a blade. 44, wherein the circuit board 41 and the first magnetic element 42 are disposed outside the casing 2, and the second magnetic element 43 is combined with the fan blade 44 and disposed inside the casing 2 in the action space 5. The first magnetic element 42 may be selected from a silicon steel sheet or a magnet, and the second magnetic element 43 may be selected from a magnet. In combination with the circuit board 41, the first magnetic element 42, and the second magnetic element 43, the fan blade 44 can be driven to guide the movement of the working medium. In addition, the water cooling head 1 may also include a shaft rod 6 and a fixing member 7 for mounting the shaft rod 6 so that the fan blade 44 can be sleeved on the shaft rod 6 and rotate with the shaft rod 6 as the center of rotation. With the aid of the fixing member 7, the fan blades will not be shifted or detached. In addition, the fixing member 7 is installed on the base 3 after the water-cooling head 1 is assembled, for example, it is close to the heat transfer structure 32 or is engaged with the heat transfer structure 32.

Please refer to FIG. 2, FIG. 3, FIG. 4A, FIG. 4B, FIG. 5, FIG. 6, FIG. 7, and FIG. 8A-8D at the same time, in which FIG. 3 is a partially enlarged schematic view of FIG. 2, and the perspective views shown in FIGS. The three-dimensional exploded view particularly shows the relative structural relationships among the elements of the fan blade 44, the shaft rod 6, the fixing member 7 and the base 3 inside the water cooling head 1. As mentioned above, the fan blade 44 in the water-cooling head 1 can be stably rotated by the shaft rod 6 and the fixing member 7, but in addition, the fan blade 44 provided by the present invention shoulders the work After the medium can enter the working space 5 from the water inlet channel 21 and absorb the thermal energy, it can smoothly guide the medium to the drainage channel 22.

In order to achieve the above functions, the fan blade 44 provided by the present invention is provided in The use space 5 is adjacent to the drainage channel 22 and is used to quickly guide the working medium to the drainage channel 22 and discharge the working space 5. The fan blade 44 mainly includes a chassis 442 and a hollow portion 446. The chassis 442 is used to divide the working space 5 into a heat absorption space 51 and a drainage space 52. The working medium in the heat absorption space 51 and the drainage space 52 can be hollowed out. The portion 446 performs fluidly coupling, that is, allows the working medium to flow from the heat absorbing space 51 to the drainage space 52.

In addition, the fan blade 44 includes a top wall 441, and the top wall 441 and the chassis 442 are spaced apart from each other, and a plurality of compartment walls 443 are connected between the two, so that the drainage space can be divided into a plurality of drainage chambers 445. In addition, when the working medium is transmitted upward from the heat absorption space 51 and enters the drainage space through the hollow portion 446, the working medium will touch the top wall 441 and then move to the drainage chamber 445, that is, the top wall 441 In the embodiment, there is a guiding mechanism that can change the flow direction.

Please refer to FIG. 4A, FIG. 4B, and FIG. 8D, the fan blade 44 has a shaft sleeve 444, and the shaft sleeve 444 is sleeved on the shaft rod 6, so that the fan blade 44 can be rotated along the shaft rod 6. In addition, the shaft sleeve 444 and the chassis 442 can be connected by a plurality of ribs 449. In addition to increasing the structural strength, the ribs 449 can also be jointly defined with the chassis 442, the partition wall 443 and the top wall 441. A plurality of drainage chambers 445 are output.

Please refer to FIG. 3, FIG. 5, FIG. 8D and FIG. 9B. In this embodiment, the hollow portion 446 of the fan blade 44 is arranged adjacent to the sleeve 444 or is arranged around the sleeve 444. The medium can be concentratedly drawn from the heat absorption space 51 through the hollow portion 446 to the drainage space 52 upward.

When the fan blade 44 starts to rotate, the working medium will be attracted from the heat absorbing space 51 to the drainage chamber 445 in the drainage space 52, and when each drainage chamber 445 is rotated and passes through the drainage channel 22, the working medium will be affected by centrifugal force. It is thrown into the drainage channel and drains the water cooling head 1.

In addition, in the present invention, the top wall 441 and the bottom plate 442 of the fan blade 44 are disposed perpendicularly to the shaft rod 6 at a 90 degree angle. However, in other embodiments, the top wall 441 and the bottom plate 442 may be aligned with the shaft rod 6. The non-vertical arrangement or the spiral arrangement can also draw the working medium into the drainage chamber 445.

Please refer to FIG. 3, FIG. 5 and FIG. 7. In this embodiment, a protrusion 447 (or a base 447) may be extended in the direction of the heat absorption space 51 (or facing the base 3) at the junction of the chassis 442 and the hollow portion 446 of the blade 44 A circle of protrusions) guides the working medium from the hollow portion 442A of the chassis 442 and is sucked upward into the drainage chamber 445, that is, the working medium can be more concentratedly moved from the heat absorption space 51 to the drainage space 52.

Please refer to FIG. 4A, FIG. 4B and FIG. 6, when the working medium passes through the heat transfer structure 32 but is not sucked in by the fan blade 44, the present invention also provides a flow guide design for designing the rear end 32B of the heat transfer structure 32. It is arranged in a circular arc shape, so that the working medium flows back to the lower side of the fan blade 44 along the circular arc channel, and is sucked upward by the hollow portion 446 of the chassis 442.

Please refer to FIG. 4A, FIG. 4B, and FIG. 5 to FIG. 7, which illustrate from different perspectives and sections how the water cooling head with a built-in pump provided in this case guides the flow of the working medium. Referring first to FIG. 5, when the working medium enters the working space 5 from the water inlet channel 21, it will flow through the heat transfer structure 32 and absorb its thermal energy, and then be attracted by the hollow portion 442A of the fan plate 44 chassis 442 and transferred upward to the top wall. A drainage chamber 445 between 441 and the chassis 442. From the upper view shown in FIG. 6, it can be seen that after the working medium enters from the water inlet channel 21, it will advance from the front end 32A of the heat transfer structure 32 to the rear end 32B of the heat transfer structure 32 and from the hollow portion of the fan 44 The drainage chamber 445 is drawn into the drainage space 52 below 446. When the drainage chamber 445 is rotated at an angle to contact the drainage channel 22, the working medium will be discharged (or thrown out), and the side view shown in FIG. 7 can more clearly observe the position of the drainage chamber 445. How the working medium is discharged in the direction of the drainage channel 22.

Please refer to FIG. 6. In the present invention, in order to consider the water inlet 23 and the water outlet The arrangement direction of the heads 24 also allows the working medium to absorb thermal energy as much as possible. Therefore, the heat transfer structure 32 and the fan blade 44 are not arranged coaxially, but adopt an eccentric configuration to obtain better heat transfer efficiency.

Please refer to FIGS. 8B and 8D. The water cooling head 1 provided in this embodiment can extend a spoiler structure 448 downward on the lower surface of the chassis 442, that is, facing the direction of the heat absorption space 51. The spoiler structure can be such as 8B and 8D show a centrifugal blade structure, but it is not limited to this structure, and other turbulent structures may also be used.

Please refer to FIGS. 9A and 9B, which respectively show a perspective view and a partial cross-sectional perspective view of a fan blade provided by an embodiment of the present invention, so that it can be seen how the working medium is sucked in from the hollow portion 446 of the fan blade 44. The structure that touches the top wall 441 and turns to the drainage chamber 445 after turning. In the above embodiment, the surface of the sleeve 444 in the action space 5 does not have any structure, but in other embodiments of the present invention, as shown in FIG. 9C, A pressure structure is formed on the surface, such as a spiral structure 4441 or a turbine structure (not shown in the figure), so that the working medium under the fan blade 44 is sucked into the drainage chamber 445 in the past and rotated, and the fan blade is lifted. 44 water absorption capacity.

Please refer to FIGS. 8B and 9D at the same time, which respectively show perspective views of the fan blades provided by different embodiments of the present invention. In the fan blade structure shown in FIG. 8D, the inner surface of the boss 447 is a flat surface, and no other structure is formed. However, in other embodiments of the present invention, as shown in FIG. 9D, a pressure structure such as a spiral structure 4471 or a turbine structure may be formed on the inner surface of the boss 447 (the side facing the sleeve). (Not shown in the figure), the working medium below the fan blade 44 is sucked into the drainage chamber 445 in the past and rotated, and the water absorption capacity of the fan blade 44 is improved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of patent application of the present invention. Therefore, all other equivalent changes or modifications made without departing from the spirit disclosed by the present invention should be included in this case. Within the scope of patent application.

Claims (27)

A water cooling head includes: a shell; a base and the shell together defining an action space, the action space can be filled with a working medium, and the base is used to absorb heat energy and transfer the heat energy to the working medium; A water channel communicates with the action space to allow the cooled working medium to flow into the action space; a drainage channel communicates with the action space and the heat-absorbing working medium exits the action space; a pump is installed in the casing and the pump The pump includes a fan blade disposed in the action space and adjacent to the drainage channel for guiding a working medium to the drainage channel to discharge the action space. The fan blade includes a chassis and a hollow portion. The chassis The action space is divided into a heat absorption space and a drainage space, and the heat absorption space and the working medium in the drainage space are fluidly coupled through the hollow portion; and a shaft rod, which extends from the drainage space to In the heat absorbing space, the fan blade is sleeved on the shaft rod, and the fan blade rotates along the shaft rod. For example, in the water cooling head of claim 1, wherein the fan blade further includes a top wall, the top wall is spaced from the chassis, and a plurality of compartment walls are connected between the chassis and the top wall, thereby draining the drainage space area. A plurality of drainage chambers are isolated. For example, the water cooling head of claim 2, the working medium transferred upward from the hollow part, after touching the top wall, it will turn and move to the drainage chamber. For example, the water cooling head of claim 1, wherein the fan blade further includes a boss extending from the junction of the hollow portion and the chassis in the direction of the heat absorption space, so that the working medium is concentrated from the heat absorption space to the heat absorption space. Drainage space moves. The water cooling head according to claim 4, wherein a pressure structure is formed on an inner surface of the boss. According to the water cooling head of claim 5, wherein the pressure structure can be selected from a spiral structure or a turbine structure. For example, the water-cooled head of claim 1, wherein the chassis has a spoiler structure extending from the lower surface of the chassis toward the base. The water cooling head of claim 8, wherein the spoiler structure is a centrifugal blade structure. The water cooling head of claim 1, wherein the fan blade has a sleeve, and the sleeve is arranged on the shaft rod. The water cooling head of claim 9, wherein the shaft rod is mounted on a fixing member, and the fixing member is mounted on the base. The water-cooling head according to claim 9, wherein the shaft sleeve and the chassis are connected by a plurality of ribs. The water-cooling head according to claim 9, wherein a pressure structure is formed on the surface of the sleeve in the action space. If the water cooling head of claim 12, the pressurizing structure may be selected from a spiral structure or a turbine structure. If the water-cooling head according to item 9, the configuration of the hollow portion is adjacent to the sleeve. For example, the water-cooling head of claim 1 has a heat-absorbing bottom surface on the outer side of the base, which can contact a heat source to absorb heat energy. A heat transfer structure is provided on the inner side of the base to transfer heat energy to the working medium. If the water cooling head of claim 15 is used, the water inlet channel is adjacent to the heat transfer structure, and the cooled working medium will pass through the heat transfer structure to absorb thermal energy. If the water cooling head of claim 1 can be connected to a heat exchange device, the working medium discharged from the drainage channel is cooled down, and flows into the working space through the water inlet channel. A water cooling head includes: an action space, which includes a heat absorption space and a drainage space, and the action space can be filled with a working medium; a blade is disposed in the action space, and the fan blade includes a chassis and a A hollow part, the chassis divides the action space into the heat absorption space and the drainage space, and the working medium in the heat absorption space and the drainage space can be liquid-coupled through the hollow part; and a shaft rod, the shaft rod The drainage space extends to the heat absorption space, the fan blade is sleeved on the shaft rod, and the fan blade rotates along the shaft rod. For example, the water cooling head of claim 18 further includes a water inlet channel and a drainage channel, the water inlet channel communicates with the heat absorption space, and the drainage channel communicates with the drainage space. For example, the water cooling head of claim 18, wherein the fan blade further includes a top wall, the top wall is spaced from the chassis, and a plurality of compartment walls are connected between the chassis and the top wall, thereby draining the drainage space. A plurality of drainage chambers are separated, and the working medium transmitted upward from the hollowed portion, after touching the top wall, will turn and move toward the drainage chamber. If the water cooling head of claim 18, the fan blade further includes a boss extending from the junction of the hollow portion and the chassis in the direction of the heat absorption space, so that the working medium is concentrated from the heat absorption space to the drainage. Space moves. The water cooling head according to claim 21, wherein a pressure structure is formed on an inner surface of the boss. The water-cooling head of claim 22, wherein the pressurizing structure may be selected from a spiral structure or a turbine structure. For example, the water cooling head of claim 18, wherein the fan blade has a sleeve, the sleeve is arranged on the shaft rod, and the configuration of the hollow portion is adjacent to the sleeve. If the water-cooled head of claim 18 is used, the chassis has a spoiler structure extending from the bottom surface of the chassis toward the base. The water cooling head of claim 25, wherein the spoiler structure is a centrifugal blade structure. A water cooling head includes: a shell; a base and the shell together defining an action space, the action space can be filled with a working medium, and an outer side of the base has a heat-absorbing bottom surface, which can contact a heat source to absorb thermal energy A heat transfer structure is provided on the inner side of the base to transfer heat energy to the working medium; a water inlet channel connects the working space to allow the cooled working medium to flow into the working space; a drainage channel connects the working space for The heat-absorbing working medium is discharged from the working space; and a pump is installed in the casing, the pump includes a fan blade disposed in the working space and adjacent to the drainage channel for guiding the working medium to The drainage channel discharges the action space. The fan blade includes a chassis and a hollowed out portion. The chassis divides the action space into a heat absorption space and a drainage space. The heat transfer structure is located in the heat absorption space and is located in The working medium in the heat absorption space enters the drainage space through the hollow portion; wherein, after the working medium passes through the heat transfer structure, it is directly lifted upward. Into the hollow portion, without passing through a collection chamber or other wall structure constituted.