Two-phase circulating cooling system

Abstract

The utility model discloses a double-phase circulating cooling system, relates to the technical field of cooling systems, and is mainly used for solving the problem that a liquid cooling medium is easy to leak at a pipeline interface of an existing liquid cooling system due to high-frequency pressure fluctuation caused by a circulating pump. The lower surface of the liquid medium cavity is tightly attached to a heating piece, a gaseous medium cavity communicated with the liquid medium cavity is formed above the liquid medium cavity, the upper portion of the gaseous medium cavity is communicated with a cooling cavity through a gaseous medium output pipe, and a liquid collecting cavity communicated with the cooling cavity is formed below the cooling cavity; the lower part of the liquid collecting cavity is in straight-through connection with the liquid medium cavity through a liquid medium input pipe; the two ends of the liquid medium input pipe are both located below the liquid level of the liquid cooling medium, and the hydraulic pressure of the liquid cooling medium at the two ends of the liquid medium input pipe is equal. The double-phase circulating cooling system has the advantages of being simple in structure, high in cooling efficiency, high in reliability and low in pipeline connector leakage risk.

Description

Technical Field

[0001] This utility model relates to the field of cooling system technology, and in particular to a two-phase circulation cooling system. Background Technology

[0002] In industrial production, the components of industrial equipment generate a large amount of heat. This heat can cause the component temperatures to rise, affecting the normal operation of the industrial equipment and, in severe cases, leading to damage. Therefore, to ensure the normal and orderly progress of production activities, it is necessary to cool the components.

[0003] In existing technologies, the main cooling methods for components are air cooling and liquid cooling. However, air cooling has limited heat dissipation capabilities and is insufficient to meet the cooling requirements of high-power industrial equipment. Therefore, liquid cooling is primarily used to cool high-power industrial equipment.

[0004] However, current liquid cooling systems have some problems. Most liquid cooling systems use a circulating pump to circulate the liquid coolant in the pipes. This design means that the pipe joints often have to withstand high-frequency pressure fluctuations caused by the circulating pump delivering the liquid coolant. These pressure fluctuations create continuous stress on the pipe joints, increasing the risk of liquid coolant leakage at these joints.

[0005] Furthermore, traditional liquid cooling systems typically utilize only the sensible heat of the liquid cooling medium for heat transfer, neglecting the enormous cooling potential of the latent heat of vaporization. This single-phase cooling method is relatively inefficient and struggles to meet the cooling requirements of some high-heat-load equipment.

[0006] Another problem is that existing liquid cooling systems are often complex in structure and difficult to maintain. Power components such as the circulating pumps in the system require regular maintenance, increasing operating costs and downtime. At the same time, the complex system structure also increases the probability of failure and reduces system reliability.

[0007] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0008] The purpose of this invention is to provide a two-phase circulating cooling system, which has the advantages of simple structure, high cooling efficiency, high reliability and low risk of leakage at pipe interfaces.

[0009] The technical solution of this utility model to solve the above-mentioned technical problems is: a two-phase circulating cooling system, including a liquid medium cavity disposed on the lower surface in close contact with the heating element, a gas medium cavity above the liquid medium cavity and communicating with it, and the upper part of the gas medium cavity communicating with the cooling cavity through a gas medium output pipe, a medium cooling device disposed in the cooling cavity, and a liquid collection cavity communicating with it below the cooling cavity, and the lower part of the liquid collection cavity being directly connected to the liquid medium cavity through a liquid medium input pipe;

[0010] Both ends of the liquid medium input pipe are below the liquid surface of the liquid cooling medium, and the liquid pressure of the liquid cooling medium at both ends of the liquid medium input pipe is equal.

[0011] As a further improvement of this utility model, the liquid medium cavity and the gas medium cavity are an integral cavity, and a grid plate is horizontally provided between the liquid medium cavity and the gas medium cavity to separate the two.

[0012] As a further improvement of this utility model, a liquid level sensor is provided on the inner wall of the liquid medium cavity.

[0013] As a further improvement of this utility model, the cooling chamber and the liquid collection chamber are an integral cavity, and a grid plate is horizontally provided between the cooling chamber and the liquid collection chamber to separate the two.

[0014] As a further improvement of this utility model, both the gaseous medium cavity and the cooling cavity are provided with quick connectors that can be quickly disassembled and fitted to the end of the gaseous medium output pipe.

[0015] As a further improvement of this utility model, both the liquid medium cavity and the liquid collection cavity are provided with quick connectors that can be quickly disassembled and fitted to the end of the liquid medium input pipe.

[0016] As a further improvement of this utility model, a thermally conductive material is filled between the lower surface of the liquid medium cavity and the heating element.

[0017] Beneficial effects

[0018] Compared with the prior art, the advantages of the two-phase circulating cooling system of this utility model are as follows:

[0019] 1. The circulating cooling system includes a liquid medium cavity with its lower surface closely attached to the heating element, a gaseous medium cavity above the liquid medium cavity and connected to it, and the upper part of the gaseous medium cavity is connected to the cooling cavity through a gaseous medium output pipe. The cooling cavity is equipped with a medium cooling device, and the lower part of the cooling cavity is connected to it through a liquid collection cavity. The lower part of the liquid collection cavity is directly connected to the liquid medium cavity through a liquid medium input pipe.

[0020] This system utilizes the latent heat of vaporization of the liquid cooling medium for heat transfer and achieves circulation of the cooling medium through hydraulic pressure balance. Therefore, there is no need to install a circulation pump, which solves the problems of low efficiency, complex structure, difficult maintenance, and easy leakage of liquid cooling medium at pipe interfaces in traditional liquid cooling systems. It has the advantages of simple structure, high cooling efficiency, high reliability, and low risk of leakage at pipe interfaces.

[0021] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Wherein: 1-Liquid medium cavity; 11-Liquid level sensor; 12-Heat-conducting material; 2-Gaseous medium cavity; 3-Gaseous medium output pipe; 4-Liquid medium input pipe; 5-Quick connector; 6-Cooling cavity; 61-Medium cooling equipment; 7-Liquid collection cavity; 8-Grate plate; 9-Heating element. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0028] Example:

[0029] In industrial production, components in industrial equipment generate a large amount of heat, which can cause the component temperatures to rise, affecting the normal operation of the equipment and, in severe cases, leading to damage. Therefore, to ensure the smooth and orderly operation of production, cooling of components is necessary. Existing technologies primarily employ two methods for component cooling: air cooling and liquid cooling. However, air cooling has limited heat dissipation and is insufficient to meet the cooling requirements of high-power industrial equipment. Therefore, liquid cooling is mainly used for cooling high-power industrial equipment. However, since most current liquid cooling systems rely on circulating pumps to transport the liquid cooling medium through pipelines, the pipeline interfaces often have to withstand high-frequency pressure fluctuations caused by the pump's delivery of the liquid cooling medium, making them prone to leakage. To address this problem, this invention proposes a two-phase circulating cooling system.

[0030] The specific embodiments of this utility model are as follows: Figure 1 As shown, a two-phase circulating cooling system includes a liquid medium chamber 1 with its lower surface closely attached to a heating element 9. Above the liquid medium chamber 1, a gaseous medium chamber 2 is connected to it, and the upper part of the gaseous medium chamber 2 is connected to a cooling chamber 6 via a gaseous medium output pipe 3. A medium cooling device 61 is installed inside the cooling chamber 6, and a liquid collecting chamber 7 is connected to it at the bottom. The lower part of the liquid collecting chamber 7 is directly connected to the liquid medium chamber 1 via a liquid medium input pipe 4. Both ends of the liquid medium input pipe 4 are below the surface of the liquid cooling medium, and the liquid pressure of the liquid cooling medium at both ends of the liquid medium input pipe 4 is equal. In this embodiment, the medium cooling device 61 is prior art to those skilled in the art, and there are currently many related devices on the market that can meet the above description; therefore, its specific structure will not be described in detail here.

[0031] In the implementation process, the liquid medium chamber 1 is positioned close to the heating element 9, ensuring close contact and rapid heat transfer. The gaseous medium chamber 2 is connected to the liquid medium chamber 1, allowing the liquid cooling medium to evaporate smoothly and enter the gaseous medium chamber 2 after absorbing heat. The gaseous medium output pipe 3 connects the gaseous medium chamber 2 and the cooling chamber 6, allowing the gaseous cooling medium to enter the cooling chamber 6 for cooling. The cooling chamber 6 is equipped with a medium cooling device 61, which effectively reduces the temperature of the gaseous cooling medium, causing it to re-condense into a liquid cooling medium. The liquid collection chamber 7 is located below the cooling chamber 6, where the cooled liquid cooling medium drips. The liquid medium input pipe 4 connects the liquid collection chamber 7 and the liquid medium chamber 1, allowing the liquid cooling medium in the collection chamber 7 to return to the liquid medium chamber 1 through the liquid medium input pipe 4, thus achieving cooling medium circulation.

[0032] By placing the liquid medium chamber 1 in close contact with the heating element 9, the heat generated by the heating element can be effectively absorbed. Above the liquid medium chamber 1 is a gaseous medium chamber 2. After absorbing heat, the liquid cooling medium in the liquid medium chamber 1 partially evaporates and becomes a gaseous cooling medium, entering the gaseous medium chamber 2. The gaseous cooling medium enters the cooling chamber 6 through the gaseous medium output pipe 3 for cooling. After cooling, the gaseous cooling medium re-condenses into liquid cooling medium and drips into the liquid collection chamber 7. At this time, because some of the liquid cooling medium in the liquid medium chamber 1 has evaporated, the liquid cooling medium in the liquid collection chamber 7 has increased, and the liquid pressure at both ends of the liquid medium input pipe 4 is no longer balanced. Therefore, some of the liquid medium in the liquid collection chamber 7 returns to the liquid medium chamber 1 through the liquid medium input pipe 4 until the liquid pressure at both ends of the liquid medium input pipe 4 returns to balance, thus realizing the circulation of the cooling medium in the cooling system. In this way, the system can achieve efficient heat transfer and cooling, ensuring the normal operation of industrial equipment. Meanwhile, since both ends of the liquid medium inlet pipe 4 are below the liquid surface of the liquid cooling medium and the liquid pressure is kept equal, the cooling medium can be kept circulating in the system without a circulation pump, thus avoiding the problem of liquid cooling medium leakage caused by pressure fluctuations.

[0033] Compared to existing technologies, the two-phase circulating cooling system of this application eliminates the need for a circulating pump, avoiding high-frequency pressure fluctuations caused by the pump and thus reducing the risk of liquid coolant leakage at pipe interfaces. Simultaneously, the phase change process between the liquid and gaseous media achieves efficient heat transfer and cooling, ensuring the normal operation of industrial equipment. Furthermore, eliminating the need for a circulating pump solves the problems of complex structure and difficult maintenance inherent in traditional liquid cooling systems, offering advantages such as simple structure and high reliability.

[0034] In this system, the liquid medium chamber 1 and the gaseous medium chamber 2 are integrated chambers, and a horizontal grid plate 8 is provided between them to separate them. This design achieves separation between the liquid medium chamber 1 and the gaseous medium chamber 2 without affecting the entry of the liquid cooling medium into the gaseous medium chamber 2 after evaporation into gaseous cooling medium. Furthermore, the presence of the grid plate 8 itself also has a certain effect on suppressing the fluctuations of the liquid cooling medium, thereby reducing large fluctuations caused by vibration and shaking of the liquid medium chamber 1, and ensuring the stable and orderly operation of the entire system.

[0035] In this embodiment, the design of the grating plate 8 can be varied. For example, the grating plate 8 can be made of metal or high-strength plastic to ensure sufficient strength and durability. The aperture of the grating plate 8 can be designed according to actual needs to ensure that it effectively separates the liquid medium chamber 1 and the gaseous medium chamber 2 without obstructing the flow of the gaseous cooling medium. Furthermore, as a preferred embodiment, the grating plate 8 can also be designed to be detachable for easy cleaning and maintenance.

[0036] Meanwhile, a liquid level sensor 11 is installed on the inner wall of the liquid medium chamber 1 of the system. The liquid level sensor 11 on the inner wall of the liquid medium chamber 1 is used to monitor the liquid level of the liquid cooling medium in real time, thereby ensuring that the liquid level in the liquid medium chamber 1 is maintained within an appropriate range. By setting up the liquid level sensor 11, insufficient or excessive liquid cooling medium can be detected in a timely manner, preventing poor cooling effect due to insufficient liquid cooling medium or overflow problems caused by excessive liquid cooling medium. The application of the liquid level sensor 11 effectively improves the reliability and safety of the system, ensuring the normal operation of the two-phase circulating cooling system.

[0037] In this embodiment, the liquid level sensor 11 can be of various types, such as a capacitive liquid level sensor, an ultrasonic liquid level sensor, or a photoelectric liquid level sensor. A capacitive liquid level sensor detects the liquid level height by measuring changes in capacitance, and features high sensitivity and fast response. An ultrasonic liquid level sensor measures the liquid level height by emitting and receiving ultrasonic waves, offering the advantage of non-contact measurement. A photoelectric liquid level sensor detects the liquid level height using photoelectric elements, and features simple structure and low cost. Specifically, the appropriate type of liquid level sensor 11 can be selected according to the actual application requirements to achieve the best liquid level monitoring effect.

[0038] Furthermore, the cooling chamber 6 and the liquid collection chamber 7 in this system can also be configured as a single integrated chamber, with a horizontally arranged grid plate 8 separating them. This integrated design reduces system complexity and potential leakage points. The horizontally positioned grid plate 8 separates the cooling chamber 6 and the liquid collection chamber 7 while allowing the cooling medium, after being cooled in the cooling chamber 6, to flow smoothly into the liquid collection chamber, thus achieving efficient cooling circulation. Additionally, the presence of the grid plate 8 itself can suppress fluctuations in the liquid cooling medium within the liquid collection chamber 7, reducing large fluctuations caused by vibration and swaying within the chamber, thereby ensuring the stable and orderly operation of the entire system and guaranteeing effective circulation of the cooling medium.

[0039] Therefore, by adopting an integrated cavity and a horizontally arranged grille plate 8, the cooling system of this utility model is more compact in structure, reduces potential leakage risks, and improves cooling efficiency and system stability. Compared with the prior art, the design of this application not only simplifies the structure of the cooling system, but also effectively solves the separation problem between the cooling cavity 6 and the liquid collection cavity 7, ensuring effective circulation of the cooling medium and stable operation of the system.

[0040] In this embodiment, the grating plate 8 can be made of metal or high-strength plastic to ensure sufficient strength and durability. The aperture and layout of the grating plate 8 can be designed according to the flow characteristics of the liquid cooling medium to achieve optimal cooling effect and smooth flow of the liquid medium. For example, the grating plate 8 can be designed with uniformly distributed small holes, or designed as a multi-layer structure with different apertures as needed. In addition, the installation method of the grating plate 8 can be diversified, and it can be installed in a fixed or detachable manner to facilitate maintenance and cleaning.

[0041] In addition, both the gaseous medium chamber 2 and the cooling chamber 6 in this system are equipped with quick-connect couplings 5 ​​that detachably engage with the end of the gaseous medium output pipe 3. Similarly, both the liquid medium chamber 1 and the liquid collection chamber 7 in this system are equipped with quick-connect couplings 5 ​​that detachably engage with the end of the liquid medium input pipe 4.

[0042] The presence of quick connector 5 makes the connection and disconnection between the gaseous medium chamber 2 and the cooling chamber 6, and between the liquid medium chamber 1 and the liquid collection chamber 7, more convenient and faster, while reducing leakage problems at the interfaces caused by frequent operations. This quick connector 5 design effectively solves the technical problem of how to achieve rapid connection and disconnection between the gaseous medium chamber 2 and the cooling chamber 6, and between the liquid medium chamber 1 and the liquid collection chamber 7, improving the system's maintenance efficiency and reliability.

[0043] In this embodiment, the quick connector 5 can be implemented in various ways. For example, possible implementations include snap-fit ​​quick connectors, threaded quick connectors, or snap ring quick connectors. These connector types enable quick connection and disassembly without the use of special tools, improving operational convenience. Furthermore, the sealing performance of the quick connector 5 can be ensured by incorporating a sealing ring inside the connector or employing high-precision machining processes, thereby further reducing the risk of leakage.

[0044] Therefore, by installing quick-connect couplings 5 ​​on the gaseous medium chamber 2 and cooling chamber 6 to quickly detach from the end of the gaseous medium output pipe 3, and by installing quick-connect couplings 5 ​​on the liquid medium chamber 1 and liquid collection chamber 7 to quickly detach from the end of the liquid medium input pipe 4, quick connection and disconnection can be achieved between the gaseous medium chamber 2 and cooling chamber 6, and between the liquid medium chamber 1 and liquid collection chamber 7. This design not only improves the system's maintenance efficiency and reliability, but also reduces leakage problems at the interfaces caused by frequent operation, thus enhancing the overall performance and safety of the system.

[0045] It is important to note that:

[0046] A thermally conductive material 12 is filled between the lower surface of the liquid medium cavity 1 and the heating element 9. This design effectively improves the heat transfer efficiency between the liquid medium cavity 1 and the heating element 9. By filling the space between the lower surface of the liquid medium cavity 1 and the heating element 9 with the thermally conductive material 12, the heat generated by the heating element 9 can be transferred to the liquid medium cavity 1 more quickly, thereby improving the cooling efficiency of the entire cooling system. This technical solution solves the heat transfer problem between the liquid medium cavity 1 and the heating element 9, ensuring that the cooling system can operate more efficiently.

[0047] In this embodiment, the thermally conductive material 12 can be a material with high thermal conductivity, such as thermally conductive silicone, thermally conductive paste, or thermally conductive pads. These materials can form a good heat conduction path between the heating element 9 and the liquid medium cavity 1. Furthermore, the selection and application of the thermally conductive material 12 can be optimized according to the specific structure of the heating element 9 and the liquid medium cavity 1. For example, the thermally conductive material 12 can be coated on the lower surface of the liquid medium cavity 1, or the thermally conductive material 12 can be made into a pad and placed directly between the heating element 9 and the liquid medium cavity 1. Thus, by rationally selecting and applying the thermally conductive material, the heat conduction efficiency can be significantly improved.

[0048] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A dual phase hydronic cooling system characterized by, The liquid medium cavity (1) is arranged below the heating element (9), and a gaseous medium cavity (2) is arranged above the liquid medium cavity (1) and communicates with the liquid medium cavity (1), and the upper part of the gaseous medium cavity (2) communicates with a cooling cavity (6) through a gaseous medium output pipe (3), the cooling cavity (6) is provided with a medium cooling device (61), and the lower part of the cooling cavity (6) is provided with a liquid collecting cavity (7) which communicates with the cooling cavity (6), and the lower part of the liquid collecting cavity (7) is directly connected with the liquid medium cavity (1) through a liquid medium input pipe (4); Both ends of the liquid medium input pipe (4) are below the liquid level of the liquid cooling medium, and the liquid pressures of the liquid cooling medium at both ends of the liquid medium input pipe (4) are equal.

2. The dual phase change cooling system of claim 1, wherein, The liquid medium cavity (1) and the gaseous medium cavity (2) are integrated, and a grid plate (8) is arranged horizontally between the liquid medium cavity (1) and the gaseous medium cavity (2) to separate them.

3. A dual phase cycle cooling system according to claim 1 or 2, characterised in that, A liquid level sensor (11) is arranged on the inner wall of the liquid medium cavity (1).

4. The dual-phase loop cooling system of claim 1, wherein, The cooling cavity (6) and the liquid collecting cavity (7) are integrated, and a grid plate (8) is arranged horizontally between the cooling cavity (6) and the liquid collecting cavity (7) to separate them.

5. The dual-phase loop cooling system of claim 1, wherein, Quick connectors (5) are arranged on the gaseous medium cavity (2) and the cooling cavity (6) and are matched with the end of the gaseous medium output pipe (3).

6. The dual phase change cooling system of claim 1 or 5, wherein, Quick connectors (5) are arranged on the liquid medium cavity (1) and the liquid collecting cavity (7) and are matched with the end of the liquid medium input pipe (4).

7. The dual-phase loop cooling system of claim 1, wherein, Thermal conductive material (12) is filled between the lower surface of the liquid medium cavity (1) and the heating element (9).

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