Liquid collection type pressure relief device for liquid cooling flow channel
By designing a liquid-cold pressure relief device for liquid-cooled runner, the internal pressure of the liquid-cooled runner is automatically adjusted by the cooperation of the piston member and the elastic member, the problem of difficulty in pressure adjustment when the ambient temperature changes is solved, and the self-sealing of the coolant is achieved, avoiding pollution and damage.
Patent Information
- Application Number
- CN202510214503.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-05-30
AI Technical Summary
When the ambient temperature of the existing liquid-cooled runner changes, the internal pressure cannot be effectively adjusted, resulting in the possibility of breaking or collapse. The existing self-relieving joints will cause direct leakage of coolant, causing pollution and damage.
A liquid-collection pressure relief device is designed, including a housing, an end cap and a piston member. Through the movement of the piston member in the fluid channel, the internal pressure of the liquid-cooled runner is automatically adjusted to avoid coolant leakage.
Automatic adjustment of pressure in the liquid-cooled runner is achieved, preventing coolant leakage, avoiding contamination and damage to electronic equipment, and ensuring the stability of pressure in the runner.
Smart Images
Figure CN120062408A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of cooling electronic equipment, and in particular to a liquid collecting type pressure relief device for a liquid cooling flow channel. Background Art
[0002] Electronic equipment generates serious heat during operation. In order to ensure its normal operation and extend its service life, heat dissipation treatment is required. In view of the development trend of increasingly strong integration and higher heat flux density of electronic equipment, through-liquid cooling is currently commonly used. Its advantages are sufficient contact with the heat source, low thermal resistance of the heat conduction path, and high heat conduction efficiency.
[0003] Through-liquid cooling requires a liquid cooling system, which consists of a liquid cooling source, liquid cooling pipes, and liquid cooling channels pre-buried inside the electronic equipment structure. The working principle is that the liquid cooling source pumps the internal coolant into the internal channel of the electronic equipment through the liquid cooling pipes. The coolant flows through the main heat-generating parts inside the equipment and transfers its heat to the heat sink, and then returns to the liquid cooling source.
[0004] In actual use, electronic equipment often faces transportation and maintenance, and needs to be disconnected from the liquid cooling source and liquid cooling pipeline. In order to prevent coolant leakage, the liquid cooling channel is usually designed to be self-sealed to act as a temporary "liquid storage tank". However, the self-sealing channel form will prevent the internal pressure from leaking. When the ambient temperature changes, the coolant stored inside and the residual gas will expand when heated or contract when cooled, resulting in a pressure difference between the inside and outside of the channel, which is prone to the rupture or collapse of the embedded channel structure.
[0005] At present, the problem is often solved by installing a self-depressurized liquid cooling joint at the inlet and outlet of the flow channel. The principle is that when the pressure inside the flow channel is too high, the piston assembly inside the joint is pushed to open the flow channel, and part of the coolant is discharged from the flow channel to balance the internal pressure. However, this will cause the coolant to be discharged directly into the external environment and cause pollution. If the liquid flows into the interior of the electronic equipment, it may even cause devastating damage such as circuit short circuit and component burning. Summary of the invention
[0006] The purpose of the present invention is to provide a liquid collecting pressure relief device for a liquid cooling flow channel in view of the above-mentioned deficiencies, which solves the problem that in the prior art, a self-depressurizing liquid cooling joint is installed at the inlet and outlet of the flow channel. When the internal pressure of the flow channel is too large, the piston assembly inside the joint is pushed to open the flow channel, and part of the coolant is discharged from the flow channel to balance the internal pressure, which will cause the coolant to be directly discharged into the external environment and cause pollution. If the liquid flows into the interior of the electronic equipment, it may even cause problems such as circuit short circuit and component burning.
[0007] The present invention is achieved through the following scheme:
[0008] A liquid collection type pressure relief device for a liquid cooling channel, comprising a housing, an end cover and a piston member; the housing is sealingly connected to the installation mating surface and is communicated with the liquid cooling channel in the installation mating surface, the end cover is detachably arranged at the end of the housing away from the installation mating surface, a guiding member is arranged in the end cover, the piston member is sleeved on the guiding member, and an elastic member is arranged between the end cover and the piston member. When the volume of the medium in the liquid cooling channel changes, the piston member can be forced to move towards the direction close to the end cover, or under the action of the elastic member, the piston member moves away from the end cover, so that the pressure in the whole liquid cooling channel can be automatically adjusted.
[0009] Based on the structure of the above-mentioned liquid collection type pressure relief device for a liquid cooling channel, the housing comprises a support cylinder and a support seat; the support cylinder is arranged at the central position of the support seat, the interior of the support cylinder is hollow, and an internal thread for mating with the housing is arranged at the end of the support cylinder away from the support seat.
[0010] Based on the structure of the above-mentioned liquid collection type pressure relief device for a liquid cooling channel, a stop surface for blocking the lower limit position of the piston member is arranged at the end of the support cylinder close to the support seat; after the end cover is screwed into the support cylinder, a convex table surface for blocking the upper limit position of the piston member is formed.
[0011] Based on the structure of the above-mentioned liquid collection type pressure relief device for a liquid cooling channel, a housing sealing and mating part and a fluid channel are arranged in the support seat, the size of the fluid channel is not larger than the size of the hollow channel inside the support cylinder, the housing sealing and mating part is arranged on the contact surface between the support seat and the installation mating surface, and a first sealing ring is arranged at the circumferential position of the housing sealing and mating part.
[0012] Based on the structure of the above-mentioned liquid collection type pressure relief device for a liquid cooling channel, flange holes are arranged on the installation mating surface, and mating holes are arranged on the support seat, and the mating holes are uniformly arranged around the support seat along the center of the support cylinder.
[0013] Based on the structure of the above-mentioned liquid collection type pressure relief device for a liquid cooling channel, the end cover comprises a cover body structure and a connecting cylinder, an exhaust hole is arranged on the cover body structure, and an external thread matching with the internal thread on the inner side wall of the support cylinder is arranged on the outer side wall of the connecting cylinder.
[0014] Based on the structure of the above-mentioned liquid collection type pressure relief device for a liquid cooling channel, the guiding member is arranged at the central position of the connecting cylinder, and the end of the guiding member away from the support cylinder and the end of the support cylinder close to the support seat are on the same horizontal plane.
[0015] Based on the structure of the above-mentioned liquid collection type pressure relief device for a liquid cooling channel, the piston member is in an annular structure. The inner side wall of the piston member contacts the outer side wall of the guiding member, and the outer side wall of the piston member contacts the inner side wall of the support cylinder. The elastic member is sleeved outside the guiding member and is arranged between the end cover and the piston member.
[0016] Based on the structure of the above-mentioned liquid collection type pressure relief device for a liquid cooling channel, an inner sealing fit portion is provided between the inner side wall of the piston member and the outer side wall of the guiding member, and an outer sealing fit portion is provided between the outer side wall of the piston member and the inner side wall of the support cylinder.
[0017] Based on the structure of the above-mentioned liquid collection type pressure relief device for a liquid cooling channel, the elastic member is a spring. The spring is sleeved on the guiding member and is assembled between the connecting cylinder and the piston member.
[0018] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:
[0019] 1), This solution provides that when the pressure in the liquid cooling channel is too high, the piston member will move towards the rear end of the housing under the action of the pressure in the fluid channel, overcoming the acting force of the return spring. The space of the fluid channel becomes larger, and the expanded coolant can enter the pressure relief device, causing the pressure in the liquid cooling channel to gradually decrease and finally return to the set pressure range; when the ambient temperature decreases and the coolant contracts due to cooling, the pressure in the fluid channel decreases, and the piston member will move towards the front end of the housing under the action of the return spring, pushing the coolant back into the liquid cooling channel to ensure the stability of the pressure in the channel.
[0020] 2), The liquid flow channel formed by the housing in this solution can store the coolant that expands due to the increase in ambient temperature in the housing without leaking to the outside of the pressure relief device, avoiding its pollution and even damage to electronic devices.
[0021] 3), The piston member in this solution has inner and outer sealing fit portions, and is hermetically fitted with the guiding column and the inner surface of the housing through sealing rings respectively, closing the path for the fluid to flow to the rear end face of the housing; at the same time, the housing blocks the leakage of the fluid to the mating end face between the front end face of the housing and the liquid cooling channel through the housing sealing fit portion on the front end face and the internally installed sealing ring, thereby realizing the self-sealing inside the pressure relief device and preventing the leakage of the coolant.
[0022] 4), In this solution, the stiffness of the return spring can be designed according to the preset pressure range in the liquid cooling channel to be adapted; and according to the capacity of the coolant in the liquid cooling channel and the possible volume change amount of the coolant within the preset temperature range, the optimal value of the housing size can be designed, thereby realizing the universality and applicability to different electronic devices.
[0023] 5) In this solution, the front end face of the housing is designed with a mounting flange, which can be fastened to the end face of the liquid cooling channel through screws. The disassembly and assembly method is convenient and easy to maintain. Description of the Drawings
[0024] Figure 1 It is a schematic diagram of the liquid collecting type pressure relief device;
[0025] Figure 2 It is a sectional view of the pressure relief device;
[0026] Figure 3 It is an assembly drawing of the liquid cooling channel of the pressure relief device;
[0027] Reference numerals: 1. Housing; 2. End cover; 3. Piston part; 4. Mounting mating surface; 5. Guide part; 6. Elastic part; 7. Liquid cooling channel; 11. Support cylinder; 12. Support seat; 13. Stopping surface; 14. Convex table surface; 15. Housing sealing mating part; 16. Fluid channel; 17. First sealing ring; 18. Mating hole; 21. Cover body structure; 22. Connecting cylinder; 23. Exhaust hole; 31. Inner sealing mating part; 32. Outer sealing mating part. Detailed Embodiments
[0028] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.
[0029] Any feature disclosed in this specification (including any additional claims, abstract) can be replaced by other equivalent or similar-purpose alternative features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only an example of a series of equivalent or similar features.
[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a predetermined orientation, be constructed and operated in a predetermined orientation, and therefore should not be construed as a limitation of the present invention.
[0031] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.
[0032] Embodiment 1
[0033] As Figures 1 to 3 shown, the present invention provides a technical solution:
[0034] A liquid collection type pressure relief device for a liquid cooling channel 7, which at least includes but is not limited to a housing 1, an end cover 2 and a piston member 3; the housing 1 is sealingly connected to the installation mating surface 4 and is communicated with the liquid cooling channel 7 in the installation mating surface 4. The end cover 2 is detachably arranged at the end of the housing 1 away from the installation mating surface 4. A guiding member 5 is arranged in the end cover 2, and the piston member 3 is sleeved on the guiding member 5. An elastic member 6 is arranged between the end cover 2 and the piston member 3. When the volume of the medium in the liquid cooling channel changes, the piston member 3 can be forced to move towards the direction close to the end cover 2, or under the action of the elastic member 6, the piston member 3 moves away from the end cover 2, so that the pressure in the entire liquid cooling channel 7 can be automatically adjusted.
[0035] Based on the above structure, in this solution, when the pressure in the liquid cooling channel 7 is too high, the piston member 3 will overcome the acting force of the elastic member 6 and move towards the direction close to the end cover 2 under the action of the pressure in the fluid channel 16. The space of the fluid channel 16 becomes larger, and the expanded coolant can enter the internal channel of the housing 1 of the pressure relief device, resulting in the pressure in the liquid cooling channel 7 gradually decreasing and finally returning to the set pressure range; when the ambient temperature drops and the coolant contracts due to cooling, the pressure in the fluid channel 16 decreases, and the piston member 3 will move away from the end cover 2 under the action of the elastic member 6, pushing the coolant back into the liquid cooling channel 7 to ensure the stability of the pressure in the channel. This solution can automatically adjust the internal pressure conditions when the external conditions change, ensuring the safety of the entire hydraulic channel.
[0036] As an example, the housing 1 may include a support cylinder 11 and a support base 12; the support cylinder 11 is arranged at the central position of the support base 12. The support base 12 may be a rectangular structure. The support cylinder 11 is hollow inside, and the end of the support cylinder 11 away from the support base 12 is provided with an internal thread for mating with the housing 1;
[0037] At the end of the support cylinder 11 close to the support base 12, there is a stop surface 13 for blocking the lower limit position of the piston member 3; after the end cover 2 is screwed into the support cylinder 11, a convex table surface 14 for blocking the upper limit position of the piston member 3 is formed;
[0038] Based on the above structure, in this solution, there are a stop surface 13 and a convex table surface 14 for restricting the upper and lower limit positions of the piston member 3, so as to avoid excessive displacement of the piston member 3 due to sudden changes in the internal pressure of the liquid cooling channel 7, enabling the entire assembly to operate within a safe range and ensuring the safety of each component.
[0039] As an example, a housing sealing and mating portion 15 and a fluid passage 16 are provided inside the support base 12. The size of the fluid passage 16 is not greater than the size of the hollow passage inside the support cylinder 11. The housing sealing and mating portion 15 is disposed on the contact surface between the support base 12 and the mounting and mating surface 4. A first sealing ring 17 is provided at the circumferential position of the housing sealing and mating portion 15.
[0040] Flange holes are provided on the mounting and mating surface 4, and mating holes 18 are provided on the support base 12. The mating holes 18 are uniformly arranged around the support base 12 along the center of the support cylinder 11.
[0041] Based on the above structure, the support base 12 and the mounting and mating surface 4 are connected as a whole through the flange holes, the mating holes 18 and bolts. The airtightness inside the support base 12 is ensured by the housing sealing and mating portion 15 and the first sealing ring 17. The medium in the liquid cooling channel 7 can pass through the fluid passage 16 and enter the hollow cavity inside the support cylinder 11 to apply an operating force to the piston member 3.
[0042] As an example, the end cap 2 may include a cap structure 21 and a connecting cylinder 22. An exhaust hole 23 may be provided on the cap structure 21. An external thread matching the internal thread on the inner side wall of the support cylinder 11 is provided on the outer side wall of the connecting cylinder 22.
[0043] Based on the above structure, the air vent hole provided on the cap structure 21 is used to adapt to the air pressure change in the hollow cavity inside the support cylinder 11 caused by the movement of the piston member 3. The connecting cylinder 22 is provided on the one hand to achieve threaded connection with the support cylinder 11 to realize rapid assembly and disassembly, and on the other hand, it can limit the extreme position of the piston member 3 and also provide a limit for the end of the elastic member 6 to ensure the efficient and precise installation of the elastic member 6.
[0044] As an example, the guide member 5 is disposed at the central position of the connecting cylinder 22. The guide member 5 may be a cylindrical structure. The end of the guide member 5 away from the support cylinder 11 is on the same horizontal plane as the end of the support cylinder 11 close to the support base 12. In this way, the guide member 5 will not be inserted into the fluid passage 16, avoiding reducing the size of the fluid passage 16 and ensuring the normal medium flow rate inside.
[0045] In this solution, the end of the guide member 5 is also on the same plane as the stop surface 13. In this way, it can accurately ensure that the piston member 3 always moves on the guide member 5 without the situation of slipping out of the ring, providing a basis for the safe movement of the piston member 3.
[0046] As an example, the piston member 3 may be a circular ring structure. The inner side wall of the piston member 3 contacts the outer side wall of the guide member 5. The outer side wall of the piston member 3 contacts the inner side wall of the support cylinder 11. The elastic member 6 is sleeved outside the guide member 5 and is disposed between the end cap 2 and the piston member 3.
[0047] An inner sealing and mating portion 31 is provided between the inner side wall of the piston member 3 and the outer side wall of the guiding member 5, and an outer sealing and mating portion 32 is provided between the outer side wall of the piston member 3 and the inner side wall of the support cylinder 11.
[0048] Based on the above structure, the inner and outer sides of the piston member 3 are sealed through the inner sealing and mating portion 31 and the outer sealing and mating portion 32, ensuring that when the piston member 3 is subjected to the acting force of the expansion medium or the acting force of the elastic member 6, the internal airtightness can always be guaranteed to prevent the internal medium from flowing out; at the same time, through the sealing and mating with the inner surface of the housing 1 and the outer surface of the guiding member 5, the fluid passage 16 leading to the internal hollow cavity of the support cylinder 11 is closed. Through the housing sealing and mating portion 15 and the first sealing ring 17 at the front end of the housing 1, the corresponding assembly surface of the embedded flow channel structure member is sealed and mated to block the outward leakage of the fluid, thereby realizing the self-sealing of the fluid passage 16 and avoiding the drawback that the commonly used self-relieving liquid cooling socket at present needs to discharge liquid externally.
[0049] As an example, the elastic member 6 can be a spring. The spring is sleeved on the guiding member 5 and is assembled between the connecting cylinder 22 and the piston member 3. In the initial state, the spring is in a compressed state, pressing the piston member 3 against the stop surface 13. When the fluid pressure in the fluid passage 16 exceeds the preset value, the spring is further compressed under the action of the piston member 3, realizing the adaptive expansion of the volume of the fluid passage 16. The stiffness and the initial compression amount of the spring can be designed according to different pressure preset values of the liquid cooling flow channel 7 to realize the applicability of the liquid collection type pressure relief device to different electronic devices.
[0050] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A liquid collecting type pressure relief device for a liquid cooling flow channel, characterized in that: The invention comprises a shell (1), an end cover (2) and a piston member (3); the shell (1) is sealed and connected to a mounting mating surface (4) and is connected to a liquid cooling channel (7) in the mounting mating surface (4); the end cover (2) is detachably arranged at an end of the shell (1) away from the mounting mating surface (4); a guide member (5) is arranged in the end cover (2); the piston member (3) is sleeved on the guide member (5); an elastic member (6) is arranged between the end cover (2) and the piston member (3); when the volume of the medium in the liquid cooling channel changes, the piston member (3) can be forced to move in a direction close to the end cover (2); or under the action of the elastic member (6), the piston member (3) can move in a direction away from the end cover (2), so that the pressure in the entire liquid cooling channel (7) can be automatically adjusted.
2. A liquid collecting type pressure relief device for a liquid cooling flow channel according to claim 1, characterized in that: The shell (1) comprises a support tube (11) and a support seat (12); the support tube (11) is arranged at the center of the support seat (12), the interior of the support tube (11) is hollow, and the end of the support tube (11) away from the support seat (12) is provided with an internal thread that matches the shell (1).
3. A liquid collecting type pressure relief device for a liquid cooling flow channel according to claim 1 or 2, characterized in that: A stop surface (13) for blocking the lower limit position of the piston member (3) is provided at the end of the support cylinder (11) close to the support seat (12); and a boss surface (14) for blocking the upper limit position of the piston member (3) is formed after the end cover (2) is screwed into the support cylinder (11).
4. A liquid collecting type pressure relief device for a liquid cooling flow channel according to claim 3, characterized in that: The support seat (12) is provided with a shell sealing fitting portion (15) and a fluid channel (16); the size of the fluid channel (16) is not larger than the size of the hollow channel inside the support tube (11); the shell sealing fitting portion (15) is provided on the contact surface between the support seat (12) and the mounting fitting surface (4); and a first sealing ring (17) is provided at a circumferential position of the shell sealing fitting portion (15).
5. A liquid collecting type pressure relief device for a liquid cooling flow channel according to claim 4, characterized in that: The mounting mating surface (4) is provided with a flange hole, and the support seat (12) is provided with a mating hole (18). The mating holes (18) are evenly arranged around the support seat (12) along the center of the support tube (11).
6. A liquid collecting type pressure relief device for a liquid cooling flow channel according to claim 5, characterized in that: The end cover (2) comprises a cover body structure (21) and a connecting tube (22); the cover body structure (21) is provided with an exhaust hole (23); and the outer wall of the connecting tube (22) is provided with an external thread matching the internal thread of the inner wall of the supporting tube (11).
7. A liquid collecting type pressure relief device for a liquid cooling flow channel according to claim 6, characterized in that: The guide member (5) is arranged at the center of the connecting tube (22), and the end of the guide member (5) away from the supporting tube (11) and the end of the supporting tube (11) close to the supporting seat (12) are on the same horizontal plane.
8. A liquid collecting type pressure relief device for a liquid cooling flow channel according to claim 7, characterized in that: The piston member (3) is an annular structure, the inner wall of the piston member (3) contacts the outer wall of the guide member (5), the outer wall of the piston member (3) contacts the inner wall of the support cylinder (11), and the elastic member (6) is sleeved on the outside of the guide member (5) and arranged between the end cover (2) and the piston member (3).
9. A liquid collecting type pressure relief device for a liquid cooling channel according to claim 8, characterized in that: An inner sealing fitting portion (31) is provided between the inner wall of the piston member (3) and the outer wall of the guide member (5), and an outer sealing fitting portion (32) is provided between the outer wall of the piston member (3) and the inner wall of the support cylinder (11).
10. A liquid collecting type pressure relief device for a liquid cooling flow channel according to claim 9, characterized in that: The elastic member (6) is a spring, which is sleeved on the guide member (5) and assembled between the connecting cylinder (22) and the piston member (3).