Two-phase cold plate and thermosyphon system

Abstract

The utility model discloses a two-phase cold plate which comprises plate sheets and a sealing strip, the two plate sheets are arranged in parallel, the sealing strip is connected with the two plate sheets and arranged on the peripheries of the plate sheets, the thickness of the plate sheets is smaller than that of the sealing strip, the plate sheets and the sealing strip jointly define a relatively closed cavity, a plurality of partition strips are arranged in the cavity, and the partition strips are arranged in the cavity. The partition strips are connected with the sealing strips on the upper side and the lower side of the two-phase cold plate to divide the cavity into a plurality of channels, and the adjacent channels are communicated with each other. According to the two-phase cold plate and thermosyphon system, a structure similar to the prior art can be formed through simple structural arrangement and a simple manufacturing process, the problem that CNC tank washing time is long in the production and manufacturing process is solved, production efficiency is improved, and meanwhile the heat exchange effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger technical field especially two phase cold plate and thermosyphon system. BACKGROUND

[0002] In prior art, two phase cold plate in thermosyphon system is usually designed as thick aluminum plate, and the required channel structure is processed by CNC. But the channel in two phase cold plate is long and thin, and the number of channels is large, so the CNC processing time is long and the cost is high.

[0003] Therefore, it is necessary to provide a new two phase cold plate and thermosyphon system to solve the above problems. SUMMARY

[0004] The utility model discloses a two phase cold plate and thermosyphon system can improve the production efficiency of two phase cold plate, and reduce production cost.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A two phase cold plate, comprising a sheet and a seal, two sheet is parallelly arranged, the seal is connected two sheet and is arranged in the four around of sheet, the thickness of sheet is less than the thickness of seal, sheet and seal are enclosed together and form a relatively closed cavity, a plurality of partition strips are arranged in the cavity, the partition strip is connected the seal of two phase cold plate upper and lower sides, and the cavity is divided into a plurality of channels, and adjacent channel is communicated.

[0007] As a further improved technical scheme of the utility model, the partition strip is provided with a through hole, and the through hole communicates adjacent channels.

[0008] As a further improved technical scheme of the utility model, the seal is provided with a groove, the end of the partition strip is matched with the groove, and the partition strip is at least partially located in the groove.

[0009] As a further improved technical scheme of the utility model, the thickness of the partition strip is equal to the distance between the two sheets, the two sides of the thickness direction of the partition strip abut against the two sheets respectively, the two sides of the length direction of the partition strip abut against the upper and lower seals respectively, and the through hole is arranged through the width of the partition strip.

[0010] As a further improved technical scheme of the utility model, the plurality of partition strips are arranged in parallel, the partition strip is perpendicular to the seal on the upper and lower sides of the two phase cold plate, and the seal perpendicular to the partition strip is provided with the groove.

[0011] As a further improved technical solution of the present invention, the seal located on the upper side of the two-phase cold plate is further provided with at least two through-holes, the through-holes and the grooves are staggered, and the through-holes connect the channel and the outside of the cavity.

[0012] In order to achieve the above purpose, the present invention also adopts the following technical solutions:

[0013] A thermosiphon system comprises the two-phase cold plate as described above, a condenser and a pipeline, wherein the condenser is arranged higher than the two-phase cold plate, and the pipeline connects the two-phase cold plate and the condenser.

[0014] As a further improved technical solution of the present invention, the two-phase cold plate is provided with at least one first inlet and at least one first outlet, the condenser is provided with at least one second inlet and at least one second outlet, the pipeline includes at least one first pipe and at least one second pipe, the first pipe connects the first outlet and the second inlet, and the second pipe connects the second outlet and the first inlet.

[0015] As a further improved technical solution of the present invention, the height position of the second inlet is higher than the height position of the second outlet.

[0016] As a further improved technical solution of the present invention, the caliber of the first inlet is smaller than or equal to the caliber of the first outlet.

[0017] Compared to existing technologies, the two-phase cold plate and thermosiphon system of this invention offers the following advantages: The two-phase cold plate utilizes a structure composed of thin plates, surrounding seals, and internal spacers. This allows for a similar structure to existing two-phase cold plates through a simple manufacturing process, reducing both processing difficulty and processing time, thereby saving CNC machining costs. This two-phase cold plate and thermosiphon system addresses the long CNC tank washing time associated with thermosiphon product manufacturing, improving production efficiency while ensuring effective heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of a two-phase cold plate in a specific embodiment of the present utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the cross-section structure along the AA direction;

[0020] Figure 3 for Figure 1 Schematic diagram of the cross-section structure along the BB direction;

[0021] Figure 4 This is a schematic top view of the structure of a two-phase cold plate according to a specific embodiment of the present invention;

[0022] Figure 5 for Figure 4 a cross-sectional structure schematic view along the direction of C-C;

[0023] Figure 6 for a front view structure schematic view of the thermosyphon system of a specific embodiment of the present application;

[0024] Figure 7 for a right view structure schematic view of the thermosyphon system of a specific embodiment of the present application;

[0025] Figure 8 for a top view structure schematic view of the thermosyphon system of a specific embodiment of the present application. DETAILED DESCRIPTION

[0026] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. If there are several embodiments, the features in these embodiments can be combined with each other when there is no conflict. When the description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise specified. The description in the following exemplary embodiments does not represent all the embodiments consistent with the present application; rather, they are merely examples of devices, products and / or methods consistent with some aspects of the present application as recited in the claims of the present application.

[0027] The terms used in the present application are merely for the purpose of describing the embodiments, and are not intended to limit the scope of the protection of the present application. The singular forms "a", "an" and "the" used in the specification and claims of the present application are also intended to include the plural forms unless the context clearly indicates otherwise.

[0028] It should be understood that the use of terms such as "first", "second" and similar words of comparison used in the specification of the present application and in the claims are not intended to denote any order, number or importance, but are merely used to distinguish the features named. Similarly, the use of "one" or "a" or similar words of comparison does not denote a quantitative limitation, but rather denotes the presence of at least one. Unless otherwise indicated, the terms "front", "back", "up", "down", and similar words of comparison appearing in the present application are merely for the convenience of description and are not limited to a particular position or a spatial orientation. The terms "include" or "contain" or similar words of comparison are open-ended expressions, meaning that the elements appearing before "include" or "contain" encompass the elements appearing after "include" or "contain" and their equivalents, and this does not exclude the possibility that the elements appearing before "include" or "contain" can also contain other elements. If "several" appears in the present application, it means two or more.

[0029] Referring to Figures 1 to 8 As shown in the drawings, the embodiment discloses a thermosyphon system, which comprises a two-phase cold plate, a condenser 4 and a pipeline connecting the two-phase cold plate and the condenser 4, and the condenser 4 is arranged higher than the two-phase cold plate.

[0030] Referring to Figures 1 to 5 As shown in the drawings, the two-phase cold plate comprises a plate 1, a sealing strip 2 and a partition strip 3, two plates 1 are arranged in parallel and opposite to each other and the shapes and sizes of the two plates 1 are the same, the sealing strip 2 is connected to the two plates 1 and arranged around the plates 1, and the two plates 1 and the four sealing strips 2 jointly enclose a relatively closed cavity 10. A plurality of partition strips 3 are arranged in the cavity 10, the partition strip 3 is connected to the sealing strips 2 on the opposite sides of the two-phase cold plate, and the cavity 10 is divided into a plurality of channels 101, and adjacent channels 101 are connected to each other. Specifically, the partition strip 3 is connected to the two sealing strips 2 on the upper and lower sides of the two-phase cold plate. Further, the thickness of the plate 1 is smaller than the thickness of the sealing strip 2. In the embodiment, the plate 1 is made of thin aluminum plate, which has low cost. The cavity 10 is enclosed by the two plates 1 and the four sealing strips 2 around the plates 1, and the channels 101 are divided by the plurality of partition strips 3 in the cavity 10. The internal channels do not need to be machined by CNC, which shortens the production time and improves the production efficiency of the two-phase cold plate.

[0031] Referring to Figure 2 , Figure 3 and Figure 5 As shown in the drawings, the partition strip 3 is provided with a through hole 31 penetrating through the partition strip 3, and the through hole 31 connects adjacent channels 101. The thickness of the partition strip 3 is equal to the distance between the two plates 1, and the two sides of the thickness direction of the partition strip 3 abut against the two plates 1 respectively, and the two sides of the length direction of the partition strip 3 abut against the two sealing strips 2 on the upper and lower sides respectively, and the through hole 31 penetrates through the width of the partition strip 3. In this way, the medium can only flow through the through hole 31 between adjacent channels 101, and cannot flow through the partition strip 3 and the plate 1 or the partition strip 3 and the sealing strip 2, which limits the flow path and flow speed of the medium, and further improves the heat exchange efficiency. In the embodiment, a plurality of partition strips 3 are arranged in parallel, and the partition strip 3 is perpendicular to the two sealing strips 2 on the upper and lower sides of the two-phase cold plate, and parallel to the two sealing strips 2 on the left and right sides of the two-phase cold plate, and the through hole 31 penetrates through the partition strip 3 from left to right. Figure 2 and Figure 5 Only several setting modes of the through hole 31 on the partition strip 3 are shown, and the number, size and position of the through hole 31 can be set according to actual needs in application; in the embodiment, the through hole 31 is a circular hole, and in other embodiments, the through hole 31 can also be a square hole, an oval hole or other special-shaped holes.

[0032] In the embodiment, the partition strip 3 is made of a hole aluminum strip profile, which is simple to manufacture and can meet the requirement of intercommunication of the left and right channels 101, and can also achieve the expected heat exchange effect when the left and right heat loads of the two-phase cold plate are uneven.

[0033] Referring toFigure 5 As shown, the sealing strip 2 is provided with a channel 21, and the end of the partition strip 3 is matched with the channel 21, and the partition strip 3 is at least partially located in the channel 21. In this embodiment, since the partition strip 3 is vertically arranged, two sealing strips 2 vertically arranged on the upper and lower sides of the partition strip 3 are provided with channels 21 for limiting and installing the partition strip 3, so as to accelerate the installation speed and improve the installation efficiency. Further, the two ends of the partition strip 3 abut the groove bottom walls of the channels 21 of the two sealing strips 2, that is, the channels 21 of the two sealing strips 2 correspond to each other in the vertical direction, and the distance between the groove bottom walls of the two channels 21 is equal to the length of the partition strip 3, so as to improve the sealing performance and stability of the installation of the partition strip 3 and the sealing strip 2.

[0034] As shown in FIG. 1, Figure 5 As shown, the sealing strip 2 is provided with a channel 21, and the end of the partition strip 3 is matched with the channel 21, and the partition strip 3 is at least partially located in the channel 21. In this embodiment, since the partition strip 3 is vertically arranged, two sealing strips 2 vertically arranged on the upper and lower sides of the partition strip 3 are provided with channels 21 for limiting and installing the partition strip 3, so as to accelerate the installation speed and improve the installation efficiency. Further, the two ends of the partition strip 3 abut the groove bottom walls of the channels 21 of the two sealing strips 2, that is, the channels 21 of the two sealing strips 2 correspond to each other in the vertical direction, and the distance between the groove bottom walls of the two channels 21 is equal to the length of the partition strip 3, so as to improve the sealing performance and stability of the installation of the partition strip 3 and the sealing strip 2.

[0035] In this embodiment, the sheet 1 is made of thin aluminum plate, the sealing strip 2 is made of aluminum strip with channel 21, and the partition strip 3 is made of aluminum strip profile with through hole 31. By using simple materials and manufacturing process, a structure similar to the two-phase cold plate manufactured by CNC machining process can be formed, the CNC machining cost and time are relatively saved, the bottleneck problem of long CNC washing groove time in the production of thermosyphon products is solved, and the production efficiency is improved.

[0036] As shown in FIG. 1, Figures 5 to 8 As shown, the two-phase cold plate is provided with at least one first inlet 51 and at least one first outlet 52, the condenser 4 is provided with at least one second inlet 61 and at least one second outlet 62, and the pipeline includes at least one first pipeline 71 and at least one second pipeline 72. The first pipeline 71 is connected between the first outlet 52 and the second inlet 61, and is used for flowing the gaseous medium from the two-phase cold plate into the condenser 4. The second pipeline 72 is connected between the second outlet 62 and the first inlet 51, and is used for flowing the liquid medium from the condenser 4 into the two-phase cold plate.

[0037] Further, as shown in FIG. 1, Figure 6 As shown, the height position of the second inlet 61 is higher than the height position of the second outlet 62. In this way, since the medium flowing into the condenser 4 from the second inlet 61 is in gaseous state, and the medium flowing out of the condenser 4 from the second outlet 62 is in liquid state, the gaseous medium is condensed into liquid medium in the condenser 4 from top to bottom, and flows downward due to the gravity. The reasonable arrangement improves the heat exchange efficiency of the condenser 4.

[0038] As shown in FIG. 1, Figure 5As shown, the first inlet 51 and the first outlet 52 are respectively connected to the through-hole 22. The diameter of the first inlet 51 is smaller than or equal to the diameter of the first outlet 52. Preferably, the diameter of the first inlet 51 is smaller than the diameter of the first outlet 52. With this arrangement, since the medium flowing into the two-phase cold plate from the first inlet 51 is liquid and the medium flowing out of the two-phase cold plate from the first outlet 52 is gaseous, and the volume of gaseous medium is relatively large, the diameter of the first outlet 52 is set larger to balance the amount of liquid medium flowing into the first inlet 51 and the amount of gaseous medium flowing out of the first outlet 52, thereby maintaining stable heat exchange. Furthermore, the first inlet 51 and the first outlet 52 are both located on the upper side of the two-phase cold plate and are arranged on opposite sides along the arrangement direction of the partition bars 3 to ensure that the flow path of the medium in the two-phase cold plate is not too short, thereby allowing the medium to fully exchange heat with the heat source.

[0039] In this embodiment, the two-phase cold plate is provided with a first inlet 51 and two first outlets 52, and the diameter of the first inlet 51 is smaller than the diameter of the first outlet 52. The condenser 4 is provided with two second inlets 61 and one second outlet 62, and the pipeline is provided with two first pipes 71 and one second pipe 72.

[0040] See also Figure 7 As shown, the condenser 4 includes a plurality of interconnected flat tubes 41 and fins 42 provided on the flat tubes 41. The medium flows in the flat tubes 41 and transfers heat to the fins 42. The fins 42 contact and exchange heat with the air to achieve the effect of cooling the medium.

[0041] See also Figure 6 As shown, the condenser 4 is further provided with a medium input port 63 for adding refrigerant medium into the condenser 4. When no refrigerant medium is needed, the medium input port 63 is sealed.

[0042] In other embodiments, the medium input port 63 may also be provided on a two-phase cold plate.

[0043] In the thermosiphon system of this embodiment, the heat source contacts the two-phase cold plate, and the medium in the two-phase cold plate evaporates upward due to the heat to become a gaseous medium. The gaseous medium enters the condenser 4 through the first outlet 52, the first pipe 71, and the second inlet 61 in sequence. The medium flows in the flat tubes 41 of the condenser 4 and transfers heat to the fins 42. After releasing heat, it forms a liquid and flows downward. The liquid medium then flows back to the two-phase cold plate through the second outlet 62, the second pipe 72, and the first inlet 51 in sequence; thus, a cycle is realized. By multiple cycles, the heat generated by the heat source can be continuously dissipated to the outside, thereby achieving the purpose of heat dissipation.

[0044] In conclusion, compared with the prior art, the two-phase cold plate and the thermosiphon system have the following advantages: the two-phase cold plate adopts the structure of the combination of the thin plate 1, the four peripheral sealing strips 2 and the cavity inner partition strip 3, can form a similar structure of the existing two-phase cold plate through a simple manufacturing process, reduces the processing difficulty and the processing time length, and saves the CNC processing cost. The two-phase cold plate and the thermosiphon system solve the problem of long CNC washing tank time of the thermosiphon product in the production and manufacturing process, improve the production efficiency, and ensure the heat exchange effect.

[0045] The above implementation manners are only used for describing the utility model and not limiting the technical solutions described by the utility model, and the understanding of the specification should be based on the technicians in the technical field. Although the utility model has been described in detail with reference to the above-mentioned embodiments, the technicians in the field should understand that the technicians in the field can still modify or equivalently replace the utility model, and all the technical solutions and improvements which do not deviate from the spirit and scope of the utility model should be covered in the claim range of the utility model.

Claims

1. A two-phase cold plate, characterized in that: The invention comprises a plate (1) and a seal (2), wherein the two plates (1) are arranged in parallel, the seal (2) connects the two plates (1) and is arranged around the plates (1), the thickness of the plates (1) is less than the thickness of the seal (2), the plates (1) and the seal (2) together enclose a relatively closed cavity (10), a plurality of partitions (3) are arranged in the cavity (10), the partitions (3) connect the seals (2) on the upper and lower sides of the two-phase cold plate, and separate the cavity (10) into a plurality of channels (101), and the adjacent channels (101) are connected to each other.

2. The two-phase cold plate according to claim 1, characterized in that: The spacer bar (3) is provided with a through hole (31), and the through hole (31) is connected to the adjacent channel (101).

3. The two-phase cold plate according to claim 1, characterized in that: The sealing strip (2) is provided with a groove (21), the end of the spacer strip (3) is adapted to the groove (21), and the spacer strip (3) is at least partially located in the groove (21).

4. The two-phase cold plate according to claim 2, characterized in that: The thickness of the spacer (3) is equal to the distance between the two plates (1); both sides of the spacer (3) in the thickness direction abut against the two plates (1); both sides of the spacer (3) in the length direction abut against the upper and lower seals (2); and the through hole (31) is set across the width of the spacer (3).

5. The two-phase cold plate according to claim 3, characterized in that: The plurality of spacers (3) are arranged in parallel, the spacers (3) are perpendicular to the seals (2) on the upper and lower sides of the two-phase cold plate, and the seals (2) perpendicular to the spacers (3) are provided with the grooves (21).

6. The two-phase cold plate according to claim 3, characterized in that: The seal (2) located on the upper side of the two-phase cold plate is further provided with at least two through-holes (22), the through-holes (22) and the groove (21) are staggered, and the through-holes (22) connect the channel (101) and the outside of the cavity (10).

7. A thermosiphon system, characterized in that: It comprises the two-phase cold plate according to any one of claims 1 to 6, a condenser (4), and a pipeline, wherein the condenser (4) is arranged higher than the two-phase cold plate, and the pipeline connects the two-phase cold plate and the condenser (4).

8. The thermosiphon system according to claim 7, characterized in that: The two-phase cold plate is provided with at least one first inlet (51) and at least one first outlet (52), the condenser (4) is provided with at least one second inlet (61) and at least one second outlet (62), the pipeline includes at least one first pipe (71) and at least one second pipe (72), the first pipe (71) connects the first outlet (52) and the second inlet (61), and the second pipe (72) connects the second outlet (62) and the first inlet (51).

9. The thermosiphon system according to claim 8, characterized in that: The second inlet (61) is located at a higher height than the second outlet (62).

10. The thermosiphon system according to claim 8, characterized in that: The diameter of the first inlet (51) is smaller than or equal to the diameter of the first outlet (52).

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