CN111367385A

CN111367385A - Heat radiation assembly

Info

Publication number: CN111367385A
Application number: CN201811599188.0A
Authority: CN
Inventors: 黄顺治; 毛黛娟; 林宜臻
Original assignee: Giga Byte Technology Co Ltd
Current assignee: Giga Byte Technology Co Ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2020-07-03

Abstract

A heat dissipation assembly includes a housing and a partition structure. The housing has a chamber. The separating structure includes a partition wall vertically disposed in the chamber to separate a first flow passage and a second flow passage in the housing, and the partition wall has a break opening and a valve structure disposed in the break opening, wherein the valve structure shields the break opening when the valve structure is not pushed open. When the fluid pressure of one section of the first flow passage and the second flow passage beside the valve structure is higher than that of the other section beside the valve structure, the valve structure is pushed away, and at least part of the crevasse is exposed.

Description

Heat radiation assembly

Technical Field

The present invention relates to a heat dissipation assembly, and more particularly, to a heat dissipation assembly using liquid to conduct heat.

Background

Today's computer players focus on good computer performance, and high performance computer components require higher power consumption. Under the use environment of high-speed operation, the operating temperature of computer parts with high power consumption is increased, and the operating smoothness of a computer system is further influenced. A water-cooled heat dissipation assembly is one of the common heat dissipation methods, and mainly absorbs heat energy of a heat source (such as a motherboard, a Central Processing Unit (CPU), or a display chip) through liquid, discharges the heat-absorbed liquid for heat exchange cooling, and performs heat dissipation according to the cycle.

In addition, the temperature of a heat source (such as a motherboard, a central processing unit or a display chip) is generally influenced by the flow rate of the liquid, and the heat conduction capability is relatively better when the flow rate is higher. The existing water-cooled heat dissipation assembly is usually limited by the space limitation of a heat source, so that the flow channel is often in a different width condition, and when liquid flows from a wider flow channel to a narrower flow channel, the problem of larger flow resistance can occur, and further the heat dissipation efficiency of the heat dissipation assembly is influenced.

Disclosure of Invention

The invention provides a heat dissipation assembly, which can guide liquid to be shunted so as to reduce the probability of unsmooth flow caused by overlarge flow resistance.

The invention relates to a heat dissipation assembly, which comprises a shell and a separation structure. The housing has a chamber. The separating structure includes a partition wall vertically disposed in the chamber to separate a first flow passage and a second flow passage in the housing, and the partition wall has a break opening and a valve structure disposed in the break opening, wherein the valve structure shields the break opening when the valve structure is not pushed open. When the fluid pressure of one section of the first flow passage and the second flow passage beside the valve structure is higher than that of the other section beside the valve structure, the valve structure is pushed away, and at least part of the crevasse is exposed.

In an embodiment of the invention, the first flow channel may have a first section and a second section. The size of the first flow passage in the first section is larger than that of the second section. The valve structure may be located at a position of the first section close to the second section, or the valve structure may be located at an intersection of the first section and the second section.

In an embodiment of the invention, the valve structure includes two flaps. When the valve structure is pushed away, the two door sheets can be opened in the same direction and extend into the first flow passage together or the second flow passage together.

In an embodiment of the invention, when the valve structure is pushed away, one of the two flaps is opened to extend into the first flow passage or the second flow passage.

In an embodiment of the invention, the heat dissipation assembly may further include at least one first stopping structure disposed in at least one of the first flow channel and the second flow channel to limit an opening angle of the two door leaves.

In an embodiment of the invention, the heat dissipation assembly may further include at least one second stopping structure disposed beside the two door leaves to limit the opening direction of the two door leaves.

In an embodiment of the present invention, the two door panels are flexible and fixed to the partition wall.

In an embodiment of the present invention, the two door panels are hard door panels and are pivotally connected to the partition wall.

In an embodiment of the invention, a ratio of a length of each gate to a channel width of the first channel may be between 0.2 and 0.6, and a ratio of the length of each gate to a channel width of the second channel may be between 0.2 and 0.6.

In an embodiment of the present invention, the two flaps are adapted to move from a closed position to a maximum open position, and each flap has a first side connected to the partition wall and a second side opposite to the first side. When the door pieces are located at the maximum opening position, the position of the second side has a minimum distance with the position of the door pieces when the door pieces are located at the closing position, the ratio of the minimum distance to the width of a flow channel of the first flow channel can be between 0.2 and 0.6, and the ratio of the minimum distance to the width of a flow channel of the second flow channel can be between 0.2 and 0.6.

Based on the above, the heat dissipation assembly of the present invention is provided with the valve structure on the separation structure separating the first flow channel and the second flow channel, the valve structure can be pushed open and closed along with the magnitude of the liquid pressure of the first flow channel and the second flow channel, and a part of the fluid flows to the other flow channel through the break, so as to have a flow dividing effect, so as to reduce the liquid pressure in the flow channel and make the liquid flow smoothly. Meanwhile, partial heat taken away by the heat source flowing through the original flow channel path can be discharged out of the chamber in advance through the flow dividing effect of the valve structure, so that partial fluid circulation is accelerated, and the heat dissipation efficiency is improved.

In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic perspective view of a heat dissipation assembly according to an embodiment of the invention.

Fig. 2 is an enlarged schematic top view of a region a of the heat dissipation assembly of fig. 1.

Fig. 3 is a schematic view of the valve structure of the heat dissipating assembly of fig. 2 when opened.

Fig. 4 is a partial top view of a valve structure of a heat dissipation assembly according to another embodiment of the present invention.

Fig. 5 is a partial perspective view illustrating a valve structure of a heat dissipation assembly according to another embodiment of the invention when the valve structure is opened.

Fig. 6 is a partial top view of a valve structure of a heat dissipation assembly according to another embodiment of the present invention.

Fig. 7 is a partial perspective view of the valve structure of the heat dissipating assembly of fig. 6 when opened.

Description of reference numerals:

70: pivoting part

100: heat radiation assembly

110: shell body

111: upper casing

112: chamber

113: lower casing

114: a first water hole

116: second water hole

120. 120', 120 ": partition structure

122: partition wall

122 a: crevasse opening

124: valve structure

124 a: door sheet

126: first side

128: second side

130: first stop structure

140: second stop structure

150: first flow channel

152: the first section

154: second section

160: second flow channel

L: length of

D1, D2, D2': width of flow channel

D3: minimum distance

P1: closed position

P2: maximum open position

Detailed Description

Fig. 1 is a schematic perspective view of a heat dissipation assembly according to an embodiment of the invention. Referring to fig. 1, the heat dissipation assembly 100 is suitable for dissipating heat from a heat source (not shown), such as a Central Processing Unit (CPU), a memory, a south bridge chip, a north bridge chip, or a graphics chip on a motherboard of a computer. In the present embodiment, the heat dissipation assembly 100 has a housing 110 and a separating structure 120 disposed in the housing 110. The housing 110 has an upper shell 111 and a lower shell 113, and a cavity 112 is formed between the upper shell 111 and the lower shell 113. The upper shell 111 includes a first water hole 114 and a second water hole 116. Heat dissipating assembly 100 in fig. 1, upper case 111 is shown in phantom lines for clarity of showing the internal construction of housing 110.

In the present embodiment, the partition structure 120 includes a partition wall 122 vertically disposed in the chamber 112 of the housing 110, and the partition wall 122 of the partition structure 120 divides the chamber 112 into a first flow channel 150 and a second flow channel 160. In addition, the first flow channel 150 is connected to the second flow channel 160, and the liquid can enter the first flow channel 150 from the first water hole 114, flow from the first flow channel 150 to the second flow channel 160, and flow from the second flow channel 160 to the second water hole 116. In addition, the present embodiment is described by taking the liquid entering the cavity 112 from the first water hole 114 and flowing out from the second water hole 116 as an example, but in other embodiments, the flow direction of the liquid may also be reversed, which depends on the usage habit of the user, and is not limited herein.

It should be noted that in the process of flowing liquid, due to the variation of the cross-sectional area of the flow channel, for example, the width of the flow channel is different (the wide flow channel flows into the narrow flow channel) or there is an obstacle in the flow channel (for example, there is a structure that can block the flow of liquid such as a fin in the flow channel or the flow channel has a height difference), the flow resistance may be increased, and the liquid may not pass easily. The separating structure 120 of the heat dissipating assembly 100 of the present embodiment is provided with a valve structure 124, so as to adjust the fluid pressure in the first flow channel 150 and the second flow channel 160, so as to make the liquid flow smoothly. As will be explained below.

Fig. 2 is an enlarged schematic top view of a region a of the heat dissipation assembly of fig. 1. Fig. 3 is a schematic view of the valve structure of the heat dissipating assembly of fig. 2 when opened. Referring to fig. 2 and fig. 3, in the present embodiment, the first flow channel 150 has a first section 152 and a second section 154, and in the present embodiment, the partition wall 122 further has a break 122a and a valve structure 124 disposed at the break 122 a. Of course, in other embodiments, the valve structure 124 of the present invention is not only suitable for the heat dissipation assembly 100 shown in fig. 1.

In the present embodiment, the valve structure 124 on the partition wall 122 of the partition structure 120 is located on the first section 152 of the first flow channel 150 and close to the second section 154 of the first flow channel 150. In other embodiments, the valve structure 124 on the partition 122 may also be located at the intersection of the first section 152 of the first flow channel 150 and the second section 154 of the first flow channel 150.

In addition, in the present embodiment, the size of the first flow channel 150 in the first section 152 is larger than the size of the first flow channel 150 in the second section 154. Thus, in the present embodiment, when the fluid flows from the first section 152 of the first flow channel 150 to the second section 154 of the first flow channel 150, the flow resistance of the fluid increases due to the narrowed flow channel size, and the pressure of the fluid increases. Of course, in other embodiments, the first flow channel 150 may also have a structure such as a fin disposed in the second section 154 to affect the flow resistance in the first flow channel 150, which is not limited in the present invention.

In contrast, in the present embodiment, the fluid flow direction of the second flow channel 160 is opposite to the liquid flow direction of the first flow channel 150, and the flow channel size increases with the flow direction. Thus, in the present embodiment, since the second flow channel 160 is widened in size, the flow resistance when the liquid flows is reduced, and further, the pressure of the fluid is reduced.

In the embodiment, the valve structure 124 includes two flaps 124a, when the valve structure 124 is pushed open, the two flaps 124a can be opened in the same direction and extend into the first flow passage 150 or the second flow passage 160 together, so that the two flaps 124a are suitable for moving from a closed position P1 to a maximum open position P2.

Further, as shown in fig. 3, when the fluid pressure of the first flow channel 150 near the valve structure 124 is greater than the fluid pressure of the second flow channel 160 near the valve structure 124, the valve structure 124 is pushed open by the fluid, the two flaps 124a extend into the second flow channel 160 together, so that at least a portion of the break 122a is exposed, and a portion of the liquid can flow from the first flow channel 150 to the second flow channel 160 through the break 122a and flow along the liquid in the second flow channel 160 to the second water hole 116 for discharging.

Similarly, in other embodiments, if the fluid pressure in the section of the second flow channel 160 close to the valve structure 124 is greater than the fluid pressure in the section of the first flow channel 150 close to the valve structure 124, the valve structure 124 is pushed open by the fluid, the two flaps 124a extend into the first flow channel 150 together, and at least a portion of the break 122a is exposed, so that a portion of the liquid can flow from the second flow channel 160 to the first flow channel 150 through the break 122 a.

The heat dissipation assembly 100 of the present embodiment has a valve structure 124 disposed at the break 122a of the partition wall 122, and the valve structure can be pushed open and closed along with the liquid pressure of the first flow channel 150 and the second flow channel 160, so as to allow a portion of the fluid to flow through the break, thereby having a shunting effect, so as to reduce the fluid pressure in one of the flow channels and make the liquid flow smoothly. Meanwhile, the liquid flows through partial heat taken away by the heat source on the original flow passage path and is discharged out of the chamber in advance through the flow dividing effect of the valve structure, so that partial fluid circulation is accelerated, and the heat dissipation efficiency is improved.

In addition, in the present embodiment, the door sheet 124a is made of a flexible material, such as rubber (rubber), and both door sheets 124a are fixed on the partition wall 122, such as injection coating. That is, if the material of the gate 124a is rubber, when the valve structure 124 is pushed away by the liquid, the gate 124a may be slightly deformed and bent to expose a portion of the crevasse 122a, so as to allow a portion of the liquid to flow through. Of course, in other embodiments, the material of the door sheet 124a may be other suitable designs, and the invention is not limited thereto.

Referring to fig. 3, in the present embodiment, the flaps 124a of the valve structure 124 further have a length L, and a ratio of the length L of each flap 124a to the flow path width D1 of the first flow path 150 may be, for example, between 0.2 and 0.6, and a ratio of the length L of each flap 124a to the flow path width D2 of the second flow path 160 may be, for example, between 0.2 and 0.6. Such a design can ensure that the first flow channel 150 or the second flow channel 160 is not closed when the door sheet 124a is opened, thereby avoiding the problem of the heat dissipation efficiency of the heat dissipation assembly 100 being reduced due to the unsmooth flow of the liquid or the backflow of the liquid caused by blocking the flow space of the liquid in the first flow channel 150 or the second flow channel 160.

It should be noted that the following embodiments follow the reference numerals and parts of the contents of the foregoing embodiments, wherein the same reference numerals are used to indicate the same or similar elements, and the description of the same technical contents is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.

Fig. 4 is a partial top view of a valve structure of a heat dissipation assembly according to another embodiment of the present invention. As shown in fig. 4, the main difference between fig. 4 and fig. 3 is that in the present embodiment, the heat dissipating assembly 100 further includes a first stopping structure 130 disposed on the second flow channel 160 for limiting the maximum opening angle of the door 124 a. For example, when two flaps 124a extend into the second flow passage 160 at the same time, the first stopping structure 130 limits the maximum opening angle of the flaps 124a, so that the flaps 124a can only be pushed to the maximum opening position P2 without being opened excessively. Of course, in other embodiments, the first stopping structure 130 may also be disposed in the first flow channel 150. Alternatively, the first stopping structure 130 is disposed in both the first flow channel 150 and the first flow channel 160, which is not limited in the invention. In addition, the first stopping structure 130 may be a convex structure disposed on the upper shell 111 or the lower shell 113, or a column structure connecting the upper shell 111 and the lower shell 113.

In addition, in the present embodiment, each door leaf 124a further has a first side 126 connected to the partition wall 122 and a second side 128 opposite to the first side 126. When each flap 124a moves from the closed position P1 to the maximum open position P2 limited by the first stop structure 130, the position of the second side 128 of each flap 124a at the maximum open position P2 has a minimum distance D3 from the position of each flap 124a at the closed position P1 shown in fig. 3, i.e., the projection distance of the second side 128 to the break 122 a. In the present embodiment, when the door 124a extends into the second flow channel 160 and is opened to the maximum opening position P2, the ratio of the minimum distance D3 to the corresponding flow channel width of the second flow channel 160 (for example, the width D2' of the second flow channel 160 at the second side 128 of the door 124 a) is between 0.2 and 0.6, so that the door 124a does not block too much flow channel space of the second flow channel 160, and the liquid flow is not smooth or the liquid flows back, so as to affect the heat dissipation efficiency of the heat dissipation assembly 100 (fig. 1).

Fig. 5 is a partial perspective view illustrating a valve structure of a heat dissipation assembly according to another embodiment of the invention when the valve structure is opened. Referring to fig. 5, a difference between the partition structure 120 'of fig. 5 and the partition structure 120 of fig. 3 is that in the present embodiment, the door pieces 124a of the valve structure 124 are rigid door pieces, each door piece 124a is pivotally connected to the partition wall 122 through a pivot portion 70, and each door piece 124a is adapted to be pushed by the liquid to rotate relative to the partition wall 122 of the partition structure 120'. When the door 124a is made of flexible material, the pivot portion 70 may be pivoted to the partition wall 122.

Fig. 6 is a partial top view illustrating a valve structure of a heat dissipation assembly according to another embodiment of the present invention, and fig. 7 is a partial perspective view illustrating the valve structure of the heat dissipation assembly of fig. 6, please refer to fig. 6 and 7, a main difference between the partition structure 120 ″ of fig. 6 and the partition structure 120 of fig. 3 is that in this embodiment, only one of the flaps 124a is opened when the valve structure 124 is pushed open. As shown, when the pressure of the first flow passage 150 is greater than the pressure of the second flow passage 160, one of the flaps 124a extends into the second flow passage 160 to be opened, and the other flap 124a remains closed.

In the present embodiment, the heat dissipating assembly 100 further includes a second stopping structure 140, which is disposed at the opening 122a of the partition wall 122 and beside the two door leaves 124a, for limiting the opening direction of the two door leaves 124 a. For example, as shown in fig. 7, in the present embodiment, the second stopping structure 140 may be a frame, and the frame (the second stopping structure 140) allows the liquid to pass through and can limit the door pieces 124a, the two door pieces 124a are respectively disposed on a side of the second stopping structure 140 (the frame) close to the first flow channel 150 and a side of the second stopping structure 140 (the frame) close to the second flow channel 160. That is, the frame (the second stopping structure 140) is used to limit the opening direction of the two flaps 124a, so that one of the flaps 124a can only extend into the first flow channel 150, and the other flap 124a can only extend into the second flow channel 160. Of course, in other embodiments, the second stopping structure 140 may have other suitable designs, such as a convex shape or a cylindrical shape, but the invention is not limited thereto.

In addition, in other embodiments, the first stopping structure 130 and the second stopping structure 140 can exist at the same time, and can be disposed in the first flow channel 150 and the second flow channel 160 or other suitable positions, which is not limited by the invention.

In addition, in other embodiments, the second sides 128 of the two flaps 124a may be shaped to match each other, such as point symmetrical configuration, stepped configuration as shown, or beveled configuration, to ensure that the valve structure 124 can open in both directions and fit together when closed.

In summary, the heat dissipation assembly of the present invention is provided with the valve structure on the separation structure separating the first flow channel and the second flow channel, and the valve structure can be pushed open and closed along with the magnitude of the liquid pressure of the first flow channel and the second flow channel, so as to allow a part of the fluid to flow through the break, thereby having a shunting effect, so as to reduce the liquid pressure in one of the flow channels and make the liquid flow smoothly. Meanwhile, the liquid flows through partial heat taken away by the heat source on the original flow passage path and is discharged out of the chamber in advance through the flow dividing effect of the valve structure, so that partial fluid circulation is accelerated, and the heat dissipation efficiency is improved. That is to say, the heat dissipation assembly of the present invention can reduce the probability that the heat dissipation liquid cannot flow smoothly due to the excessive flow resistance, and can reduce the time of part of the fluid circulation, thereby ensuring the heat dissipation assembly to have good heat dissipation efficiency.

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A heat dissipation assembly, comprising:

a housing having a chamber; and

a partition structure including a partition wall vertically disposed in the chamber for partitioning a first flow passage and a second flow passage in the housing, the partition wall having a break opening and a valve structure disposed in the break opening, wherein

When the valve structure is not pushed away, the valve structure shields the break,

when the fluid pressure of one of the first flow passage and the second flow passage at the section beside the valve structure is higher than that of the other section beside the valve structure, the valve structure is pushed away to expose at least part of the break.

2. The heat dissipation assembly of claim 1, wherein the first channel has a first section and a second section, the first channel has a larger channel size in the first section than in the second section, the valve structure is located at a position of the first section close to the second section, or the valve structure is located at a junction of the first section and the second section.

3. The heat dissipating assembly of claim 1, wherein the valve structure comprises two flaps that open in the same direction to extend together into the first flow channel or to extend together into the second flow channel when the valve structure is pushed open.

4. The heat dissipating assembly of claim 1, wherein the valve structure comprises two flaps, one of the two flaps being opened to extend into the first flow channel or the second flow channel when the valve structure is pushed open.

5. The heat removal assembly of claim 1, wherein the valve structure comprises two flaps, the heat removal assembly further comprising:

and the first stop structure is configured on at least one of the first flow channel and the second flow channel so as to limit the opening angle of the two door sheets.

6. The heat removal assembly of claim 1, wherein the valve structure comprises two flaps, the heat removal assembly further comprising:

and the second stop structure is arranged beside the two door sheets so as to limit the opening direction of the two door sheets.

7. The heat sink assembly of claim 1, wherein the valve structure comprises two flaps, both of the flaps being flexible and fixed to the partition.

8. The heat dissipating assembly of claim 1, wherein the valve structure comprises two flaps pivotally connected to the partition.

9. The heat dissipating assembly of claim 1, wherein the valve structure comprises two flaps, a ratio of a length of each flap to a channel width of the first channel is between 0.2 and 0.6, and a ratio of the length of each flap to a channel width of the second channel is between 0.2 and 0.6.

10. The heat dissipating assembly of claim 1, wherein the valve structure comprises two flaps, each of the two flaps is adapted to move from a closed position to a maximum open position, each of the two flaps has a first side connected to the partition wall and a second side opposite to the first side, when each of the two flaps is in the maximum open position, the second side is located at a minimum distance from a position where the flap is located in the closed position, a ratio of the minimum distance to a channel width of the first channel is between 0.2 and 0.6, and a ratio of the minimum distance to a channel width of the second channel is between 0.2 and 0.6.