Non-equal-interval relieved tooth liquid cooling plate
By designing a non-uniformly spaced toothed liquid cooling plate and controlling the flow channel impedance and refrigerant flow rate, the problem of uneven chip surface temperature in existing liquid cooling plates was solved, achieving a more uniform heat dissipation effect and stable chip operation.
Patent Information
- Application Number
- CN202520524695.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-25
AI Technical Summary
The existing equidistant toothed liquid cooling plate causes uneven temperature distribution on the chip surface, affecting chip operation.
The design of a non-equal-spacing toothed liquid cooling plate involves reducing the tooth spacing in the central region and increasing the tooth spacing in the edge region to control the flow channel impedance and refrigerant flow rate, thereby achieving refrigerant flow balance.
This achieves uniformity of chip surface temperature, improving heat dissipation and chip operational stability.
Smart Images
Figure CN223925529U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to liquid cooling plate technical field, concretely relates to a non-equal interval spade tooth liquid cooling plate. BACKGROUND
[0002] One of the key components of liquid cooling technology is the liquid cooling plate. The liquid cooling plate is an intermediate place for heat exchange. The heat generated by the chip is conducted to the liquid cooling plate in a heat-conducting manner. The coolant in the liquid cooling plate flows in the internal flow channel, and convective heat exchange occurs between the flow channel side wall. The heat is transferred from the flow channel side wall of the liquid cooling plate to the coolant, and the temperature of the coolant rises, thereby taking away the heat.
[0003] Currently, the internal flow channel of the liquid cooling plate commonly used in the field of servers and communication is a spade tooth flow channel. The advantage of the spade tooth liquid cooling plate is that the tooth density is large. The copper spade tooth thickness is generally 0.15mm, and the tooth spacing is 0.15mm. The aluminum spade tooth thickness is generally 0.2mm, and the tooth spacing is 0.2mm. Compared with the milling fin or stamping fin liquid cooling plate, the water cooling fin of the spade tooth type has higher fin density and larger fin area per unit volume, and has better heat dissipation effect.
[0004] Generally, the tooth spacing of such spade tooth structure cold plate is a fixed value. Since the water inlet and outlet of the liquid cooling plate are located at the center of the cold plate, according to the parallel flow pressure law, the pressure difference before and after each flow channel is the same (ΔP=SQ 2 , ΔP is the flow channel inlet and outlet pressure difference, S is the flow channel impedance, Q is the coolant flow in the flow channel; the smaller the spacing, the greater the impedance, and vice versa), the center area flow channel path is short, and the impedance is small, so the coolant flow of the center area flow channel is larger; the flow path of the two side flow channels is long, and the impedance is large, so the coolant flow of the two side flow channels is small, thereby causing the chip surface temperature to be uneven, affecting the operation of the chip. SUMMARY
[0005] In order to overcome the defects existing in the prior art, a non-equal interval spade tooth liquid cooling plate is provided to solve the problem that the existing equal interval spade tooth structure liquid cooling plate easily causes the chip surface temperature to be uneven.
[0006] To achieve the above purpose, a non-equal interval spade tooth liquid cooling plate is provided, comprising:
[0007] The substrate has a front surface and a back surface. The front surface of the substrate forms a receiving groove. The receiving groove has two opposite ends in the length direction of the receiving groove. The middle part of the groove bottom of the receiving groove forms a plurality of tooth pieces. The tooth pieces are arranged along the length direction of the receiving groove. Flow channels are formed between adjacent two tooth pieces. The width of the plurality of flow channels gradually increases from the middle part of the receiving groove to the two opposite sides of the width direction of the receiving groove.
[0008] A cover plate for closing the slot opening of the accommodating slot is installed on the front surface of the base plate, and the cover plate is provided with a liquid inlet and a liquid outlet, and the positions of the liquid inlet and the liquid outlet correspond to the two ends of the accommodating slot.
[0009] Further, the width of the flow channel in the middle part of the accommodating slot is 0.15-0.4 mm.
[0010] Further, the width of the flow channel on the two sides of the accommodating slot is 0.3-0.6 mm.
[0011] Further, the liquid inlet and the liquid outlet are respectively connected with a connector pipe.
[0012] Further, the length of the accommodating slot gradually decreases from the middle part of the accommodating slot to the two opposite sides in the width direction of the accommodating slot.
[0013] Further, the base plate is a copper plate or an aluminum plate.
[0014] The non-equal-interval toothed liquid cooling plate has the advantages that the tooth piece spacing in the internal flow channel is distributed in a non-equal-interval manner, the spacing of the tooth pieces in the central region of the liquid cooling plate is small, the spacing of the tooth pieces in the edge region of the liquid cooling plate is large, the flow impedance of the flow channel is controlled, the flow velocity between the tooth pieces is controlled, and thus the refrigerant flow of each passage in the liquid cooling plate is controlled.
[0015] The non-equal-interval toothed liquid cooling plate effectively increases the flow impedance between the tooth pieces in the central region, reduces the flow impedance between the edge tooth pieces, realizes uniform refrigerant flow resistance in each passage, balances the refrigerant flow between the flow channels, and promotes uniform chip surface temperature. BRIEF DESCRIPTION OF DRAWINGS
[0016] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the accompanying drawings:
[0017] Fig. 1 FIG. 1 is a structural schematic view of a non-equal-interval toothed liquid cooling plate according to an embodiment of the present application.
[0018] Fig. 2 FIG. 2 is a top view of the non-equal-interval toothed liquid cooling plate according to the embodiment of the present application.
[0019] Fig. 3 FIG. 3 is a top view of a base plate according to the embodiment of the present application. DETAILED DESCRIPTION
[0020] The application will be described in further detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model and are not a limitation on the utility model. In addition, it should be noted that only parts related to the utility model are shown in the drawings for ease of description.
[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and embodiments.
[0022] Referring to Figs. 1 to 3 The utility model provides a non-equal-interval chisel tooth liquid cooling plate, which comprises a substrate 1 and a cover plate 2.
[0023] In the embodiment, the substrate is in the shape of a rectangle as a whole. As a preferred embodiment, the substrate 1 is a copper plate or an aluminum plate.
[0024] The substrate 1 has a front surface and a back surface. The front surface of the substrate 1 is formed with a receiving groove 10. The receiving groove 10 has two ends opposite in the length direction of the receiving groove 10. Meanwhile, the receiving groove 10 has two sides opposite in the width direction thereof.
[0025] The middle part of the groove bottom of the receiving groove 10 is formed with a plurality of tooth pieces 11. The tooth pieces are formed by chisel tooth processing, wire cutting, laser etching or the like.
[0026] Each tooth piece 11 is arranged along the length direction of the receiving groove 10. A flow channel is formed between two adjacent tooth pieces 11. The width of the plurality of flow channels gradually increases from the middle part of the receiving groove 10 to the two sides opposite in the width direction of the receiving groove 10.
[0027] As a preferred embodiment, the width of the flow channel in the middle part of the receiving groove 10 is 0.15 mm to 0.4 mm.
[0028] Specifically, when the substrate is an aluminum plate, the width of the flow channel in the middle part of the receiving groove 10 is 0.3 mm to 0.4 mm.
[0029] When the substrate is a copper plate, the width of the flow channel in the middle part of the receiving groove 10 is 0.15 mm to 0.2 mm.
[0030] The width of the flow channel at the two sides of the receiving groove 10 is 0.3 mm to 0.6 mm.
[0031] Specifically, when the substrate is an aluminum plate, the width of the flow channel at the two sides of the receiving groove 10 is 0.5 mm to 0.6 mm.
[0032] When the substrate is a copper plate, the width of the flow channel at the two sides of the receiving groove 10 is 0.3 mm to 0.5 mm.
[0033] In the embodiment, referring to Fig. 3 As shown in the figure, the length of the accommodating groove 10 gradually decreases from the middle part of the accommodating groove 10 to the opposite two sides in the width direction of the accommodating groove 10.
[0034] The cover plate 2 is installed on the front surface of the base plate 1. The cover plate 2 is used to close the slot opening of the accommodating groove 10.
[0035] The cover plate 2 is provided with a liquid inlet and a liquid outlet. The positions of the liquid inlet and the liquid outlet correspond to the two ends of the accommodating groove 10.
[0036] In the embodiment, the liquid inlet and the liquid outlet are respectively connected with the joint pipe 3.
[0037] The preparation method of the non-equal-interval pick tooth liquid cooling plate of the utility model, comprising the following steps:
[0038] S1, using pick tooth processing, wire cutting, laser etching and other ways to process non-equal-interval tooth pieces in the groove of the accommodating groove of the base plate.
[0039] S2, according to the flow channel structure, the cover plate 2 is processed.
[0040] S3, the cover plate 2 and the base plate are sealed and welded by friction stir welding, vacuum brazing, electron beam welding or diffusion welding.
[0041] S4, the joint pipe 3 of the liquid inlet and the liquid outlet is welded with the cover plate by brazing, argon arc welding or high-frequency welding to form an integral whole.
[0042] The non-equal-interval pick tooth liquid cooling plate of the utility model, by adopting non-equal-interval distribution of the internal flow channel tooth piece interval, the interval of the tooth pieces in the center area of the liquid cooling plate is small, the interval of the tooth pieces in the edge area of the opposite two sides of the liquid cooling plate is large, and then by controlling the flow channel impedance of the flow channel, the flow velocity between the tooth pieces is controlled, so that the refrigerant flow of each channel in the liquid cooling plate is controlled.
[0043] The non-equal-interval pick tooth liquid cooling plate of the utility model effectively increases the flow impedance between the tooth pieces in the center area, reduces the flow impedance between the edge tooth pieces, realizes the uniform refrigerant flow resistance in each channel, and realizes the balance of the refrigerant flow between each flow channel, so as to make the surface temperature of the chip uniform.
[0044] The above description is only the preferred embodiment of the application and the explanation of the applied technical principles. Those skilled in the art should understand that the utility model range involved in the application is not limited to the technical solutions formed by the specific combination of the above technical features, and also covers other technical solutions formed by any combination of the above technical features or equivalent features without departing from the utility model concept. For example, the above features are replaced with the technical features disclosed in the application (but not limited to) with similar functions to form a technical solution.
Claims
1. A non-uniformly spaced chisel liquid cold plate, characterized by, The application relates to a substrate with a front surface and a back surface, the front surface of the substrate is provided with a containing groove, the containing groove has two opposite ends in the length direction of the containing groove, the middle part of the groove bottom of the containing groove is provided with a plurality of tooth pieces arranged in the length direction of the containing groove, a flow channel is formed between two adjacent tooth pieces, and the width of the plurality of flow channels gradually increases from the middle part of the containing groove to the two opposite sides of the containing groove in the width direction. A cover plate is arranged on the front surface of the substrate to seal the groove opening of the containing groove, the cover plate is provided with liquid inlet ports and liquid outlet ports, and the positions of the liquid inlet ports and the liquid outlet ports correspond to the two ends of the containing groove. The width of the flow channel in the middle part of the containing groove is 0.15-0.4 mm.
2. The non-uniformly spaced pick liquid cold plate of claim 1, wherein, The width of the flow channel in the two sides of the containing groove is 0.3-0.6 mm.
3. The non-uniformly spaced pick liquid cold plate of claim 2, wherein, The liquid inlet ports and the liquid outlet ports are respectively connected with joint pipes.
4. The non-uniformly spaced pick liquid cold plate of claim 1, wherein, The length of the containing groove gradually decreases from the middle part of the containing groove to the two opposite sides of the containing groove in the width direction.
5. The non-uniformly spaced pick liquid cold plate of claim 1, wherein, The substrate is a copper plate or an aluminum plate.
6. The non-uniformly spaced pick liquid cold plate of claim 1, wherein,