Two-phase circulating cooling system

Abstract

The invention discloses a two-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 leaks easily 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] The invention relates to the technical field of cooling systems, and in particular to a two-phase circulation cooling system. Background Art

[0002] In industrial production activities, the parts of industrial equipment will generate a lot of heat, which will cause the temperature of the parts to rise, thus affecting the normal operation of the industrial equipment, and in severe cases, causing damage to the industrial equipment. Therefore, in order to ensure the normal and orderly progress of production activities, the parts need to be cooled.

[0003] In the prior art, there are two main cooling methods for parts: air cooling and liquid cooling. Among them, the heat dissipation effect of air cooling is limited and it is difficult to meet the cooling requirements of high-power industrial equipment. Therefore, the cooling of high-power industrial equipment is mainly achieved through liquid cooling.

[0004] However, there are some problems with current liquid cooling systems. Most liquid cooling systems use a circulating pump to circulate the liquid cooling medium in the pipeline. This design causes the interface of the pipeline to often be subject to high-frequency pressure fluctuations caused by the circulating pump transporting the liquid cooling medium. This pressure fluctuation will cause continuous stress on the pipeline interface, thereby increasing the risk of liquid cooling medium leakage at the pipeline interface.

[0005] In addition, traditional liquid cooling systems usually only use the sensible heat of the liquid cooling medium for heat transfer, ignoring the huge cooling potential of the latent heat of vaporization. This single-phase cooling method has relatively low efficiency and is difficult to meet the cooling needs of some high heat load equipment.

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

[0007] In view of the above problems, the existing technology needs to be improved urgently. Summary of the invention

[0008] The object of the present invention is to provide a two-phase circulation cooling system, which has the advantages of simple structure, high cooling efficiency, strong reliability and low risk of pipeline interface leakage.

[0009] The technical solution of the present invention to solve the above technical problems is: a two-phase circulation cooling system, comprising a liquid medium cavity arranged close to a heating element on the lower surface, a gaseous medium cavity connected to the liquid medium cavity is arranged above the liquid medium cavity, and the upper part of the gaseous medium cavity is connected to the cooling cavity through a gaseous medium output pipe, a medium cooling device is arranged in the cooling cavity, and a liquid collecting cavity connected to the cooling cavity is arranged below the cooling cavity, and the lower part of the liquid collecting cavity is 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 the present invention, the liquid medium cavity and the gaseous medium cavity are an integrated cavity, and a grid plate is horizontally provided between the liquid medium cavity and the gaseous medium cavity to separate the two.

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

[0013] As a further improvement of the present invention, the cooling cavity and the liquid collecting cavity are an integrated cavity, and a grid plate for separating the cooling cavity and the liquid collecting cavity is horizontally provided between the cooling cavity and the liquid collecting cavity.

[0014] As a further improvement of the present invention, both the gaseous medium cavity and the cooling cavity are provided with a quick connector that is quickly detached and matched with the end of the gaseous medium output pipe.

[0015] As a further improvement of the present invention, both the liquid medium cavity and the liquid collecting cavity are provided with a quick connector that is quickly detached and matched with the end of the liquid medium input pipe.

[0016] As a further improvement of the present invention, a heat-conducting 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 a two-phase circulation cooling system of the present invention are:

[0019] 1. The circulating cooling system includes a liquid medium cavity whose lower surface is close to the heating element, a gaseous medium cavity connected to the liquid medium cavity is provided above the liquid medium cavity, and the upper part of the gaseous medium cavity is connected to the cooling cavity through a gaseous medium output pipe, a medium cooling device is provided in the cooling cavity, and a liquid collecting cavity connected to the cooling cavity is provided below the cooling cavity, and the lower part of the liquid collecting cavity is directly connected to the liquid medium cavity through a liquid medium input pipe;

[0020] The system utilizes the latent heat of vaporization of the liquid cooling medium to transfer heat, and realizes the circulation of the cooling medium through liquid pressure balance, so there is no need to set up a circulating pump, thus solving the problems of low efficiency, complex structure, difficult maintenance and easy leakage of liquid cooling medium at the pipe interface in the traditional liquid cooling system. It has the advantages of simple structure, high cooling efficiency, strong reliability and low risk of leakage at the pipe interface.

[0021] The present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, which are used to illustrate embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Among them: 1-liquid medium cavity; 11-liquid level sensor; 12-heat conductive 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 collecting cavity; 8-grid plate; 9-heating element. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

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

[0028] Example:

[0029] During industrial production activities, parts and components in industrial equipment will generate a large amount of heat, which will cause the temperature of parts and components to rise, thereby affecting the normal operation of industrial equipment, and in severe cases, will cause damage to industrial equipment. Therefore, in order to ensure the normal and orderly progress of production activities, it is necessary to cool the parts and components. In the prior art, there are two main cooling methods for parts and components: air cooling and liquid cooling. Among them, the heat dissipation effect of air cooling is limited, and it is difficult to meet the cooling requirements of high-power industrial equipment. Therefore, the cooling of high-power industrial equipment is mainly achieved through liquid cooling. However, since most of the current liquid cooling systems realize the circulation of liquid cooling medium in the pipeline by setting a circulating pump, the interface of the pipeline often needs to withstand the high-frequency pressure fluctuations brought by the circulating pump conveying the liquid cooling medium, which makes it easy for the liquid cooling medium to leak at the interface of the pipeline. In response to this problem, the present invention proposes a two-phase circulation cooling system.

[0030] The specific embodiments of the present invention are as follows Figure 1 As shown, a two-phase circulation cooling system includes a liquid medium cavity 1 whose lower surface is arranged close to the heating element 9. A gaseous medium cavity 2 connected to the liquid medium cavity 1 is arranged above the liquid medium cavity 1, and the upper part of the gaseous medium cavity 2 is connected to the cooling cavity 6 through a gaseous medium output pipe 3. A medium cooling device 61 is arranged in the cooling cavity 6, and a liquid collecting cavity 7 connected to the cooling cavity 6 is arranged below the cooling cavity 6. The lower part of the liquid collecting cavity 7 is directly connected to the liquid medium cavity 1 through a liquid medium input pipe 4. Among them, both ends of the liquid medium input pipe 4 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 4 is equal. In this embodiment, regarding the medium cooling device 61, it belongs to the prior art for those skilled in the art, and there are many related devices on the market that can meet the above description. Therefore, its specific structure will not be elaborated in detail here.

[0031] During the implementation process, the liquid medium cavity 1 is arranged close to the heating element 9 and in close contact with the heating element 9 to ensure that heat can be quickly transferred to the liquid medium cavity 1. The gaseous medium cavity 2 is connected to the liquid medium cavity 1, so that the liquid cooling medium can smoothly evaporate and enter the gaseous medium cavity 2 after absorbing heat. The gaseous medium output pipe 3 connects the gaseous medium cavity 2 and the cooling cavity 6, and the gaseous cooling medium enters the cooling cavity 6 through the gaseous medium output pipe 3 for cooling. A medium cooling device 61 is provided in the cooling cavity 6, which can effectively reduce the temperature of the gaseous cooling medium and recondense it into a liquid cooling medium. The liquid collecting cavity 7 is arranged below the cooling cavity 6, and the cooled liquid cooling medium drips into the liquid collecting cavity 7. The liquid medium input pipe 4 connects the liquid collecting cavity 7 and the liquid medium cavity 1, and the liquid cooling medium in the liquid collecting cavity 7 returns to the liquid medium cavity 1 through the liquid medium input pipe 4 to realize the circulation of the cooling medium.

[0032] The liquid medium cavity 1 is arranged close to the heating element 9 to effectively absorb the heat generated by the heating element. A gaseous medium cavity 2 is arranged above the liquid medium cavity 1. After absorbing heat, the liquid cooling medium in the liquid medium cavity 1 will partially evaporate and become a gaseous cooling medium and enter the gaseous medium cavity 2. The gaseous cooling medium enters the cooling cavity 6 through the gaseous medium output pipe 3 for cooling. After cooling, the gaseous cooling medium will recondense into a liquid cooling medium and drip into the liquid collecting cavity 7. At this time, since a part of the liquid cooling medium in the liquid medium cavity 1 evaporates, a part of the liquid cooling medium in the liquid collecting cavity 7 increases, and the liquid pressure at both ends of the liquid medium input pipe 4 is no longer balanced, so part of the liquid medium in the liquid collecting cavity 7 will return to the liquid medium cavity 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, thereby realizing the circulation of the cooling medium in the cooling system. In this way, the system can achieve efficient heat transfer and cooling to ensure the normal operation of industrial equipment. At the same time, since both ends of the liquid medium input 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 circulating pump, thereby avoiding the problem of liquid cooling medium leakage caused by pressure fluctuations.

[0033] Compared with the prior art, the two-phase circulating cooling system of the present application does not need to use a circulating pump, avoiding the high-frequency pressure fluctuations caused by the circulating pump, thereby reducing the risk of leakage of the liquid cooling medium at the pipeline interface. At the same time, through the phase change process of the liquid medium and the gaseous medium, efficient heat transfer and cooling are achieved, ensuring the normal operation of industrial equipment. In addition, the lack of the need to set up a circulating pump also solves the problems of complex structure and difficult maintenance in traditional liquid cooling systems, and has the advantages of simple structure and high reliability.

[0034] In the system, the liquid medium cavity 1 and the gaseous medium cavity 2 are an integrated cavity, and a grid plate 8 is horizontally provided between the liquid medium cavity 1 and the gaseous medium cavity 2 to separate the two. Through this design, the liquid medium cavity 1 and the gaseous medium cavity 2 can be separated without affecting the liquid cooling medium evaporating into the gaseous cooling medium and then entering the gaseous medium cavity 2. In addition, the existence of the grid plate 8 itself can also have a certain anti-fluctuation effect on the liquid cooling medium, thereby reducing the large fluctuation of the liquid cooling medium caused by the vibration and shaking of the liquid medium cavity 1, thereby ensuring the smooth and orderly operation of the entire system.

[0035] In this embodiment, the grid plate 8 can be designed in a variety of ways. For example, the grid plate 8 can be made of metal material or high-strength plastic material to ensure that it has sufficient strength and durability. The aperture of the grid plate 8 can be designed according to actual needs to ensure that it can effectively separate the liquid medium cavity 1 and the gaseous medium cavity 2 without hindering the circulation of the gaseous cooling medium. And as a preferred embodiment, the grid plate 8 can also be detachable for easy cleaning and maintenance.

[0036] At the same time, a liquid level sensor 11 is provided on the inner wall of the liquid medium cavity 1 of the system. The liquid level sensor 11 on the inner wall of the liquid medium cavity 1 is used to monitor the liquid level height of the liquid cooling medium in real time, thereby ensuring that the liquid level in the liquid medium cavity 1 is maintained within an appropriate range. By providing the liquid level sensor 11, the shortage or excess of the liquid cooling medium can be detected in time, preventing the problem of poor cooling effect caused by too little liquid cooling medium or overflow caused by too much liquid cooling medium. The application of the liquid level sensor 11 effectively improves the reliability and safety of the system and ensures the normal operation of the two-phase circulation 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. The capacitive liquid level sensor detects the liquid level by measuring the change in capacitance, and has the characteristics of high sensitivity and fast response speed. The ultrasonic liquid level sensor measures the liquid level by emitting and receiving ultrasonic waves, and has the advantage of non-contact measurement. The photoelectric liquid level sensor detects the liquid level by photoelectric elements, and has the characteristics of 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 collecting chamber 7 in the system can also be set as an integrated chamber, and a grid plate 8 is horizontally provided between the cooling chamber 6 and the liquid collecting chamber 7 to separate the two. The cooling chamber 6 and the liquid collecting chamber 7 are integrated chambers, and this design reduces the complexity of the system and possible leakage points. The grid plate 8 is horizontally arranged between the cooling chamber 6 and the liquid collecting chamber 7, which is used to separate the two while allowing the cooling medium to flow smoothly into the liquid collecting chamber after being cooled in the cooling chamber 6, thereby achieving an efficient cooling cycle. In addition, the existence of the grid plate 8 itself can also produce a certain fluctuation suppression effect on the liquid cooling medium in the liquid collecting chamber 7, thereby reducing the large fluctuations of the liquid cooling medium caused by the vibration and shaking of the liquid collecting chamber 7, thereby ensuring the smooth and orderly operation of the entire system and the effective circulation of the cooling medium.

[0039] Thus, by adopting an integrated cavity and a horizontally arranged grid plate 8, the cooling system of the present invention is more compact in structure, reduces the potential risk of leakage, and improves the cooling efficiency and stability of the system. Compared with the prior art, the design of the present 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 collecting cavity 7, ensuring the effective circulation of the cooling medium and the smooth operation of the system.

[0040] In this embodiment, the grid plate 8 can be made of metal material or high-strength plastic material to ensure that it has sufficient strength and durability. The aperture and layout of the grid plate 8 can be designed according to the flow characteristics of the liquid cooling medium to achieve the best cooling effect and the smooth flow of the liquid medium. For example, the grid plate 8 can be designed to have evenly distributed small holes, or designed to have a multi-layer structure with different apertures as required. In addition, the installation method of the grid plate 8 can also be diversified, and can be fixedly installed or detachably installed to facilitate maintenance and cleaning.

[0041] In addition, the gaseous medium chamber 2 and the cooling chamber 6 in the system are both provided with a quick connector 5 that is quickly released and matched with the end of the gaseous medium output pipe 3. At the same time, the liquid medium chamber 1 and the liquid collecting chamber 7 of the system are also provided with a quick connector 5 that is quickly released and matched with the end of the liquid medium input pipe 4.

[0042] The existence of the quick connector 5 makes the connection and disassembly between the gas medium chamber 2 and the cooling chamber 6, and between the liquid medium chamber 1 and the liquid collecting chamber 7 more convenient and rapid, while reducing the leakage problem at the interface caused by frequent operation. Through the design of this quick connector 5, the technical problem of how to achieve quick connection and disassembly between the gas medium chamber 2 and the cooling chamber 6, and between the liquid medium chamber 1 and the liquid collecting chamber 7 can be effectively solved, and the maintenance efficiency and reliability of the system are improved.

[0043] In this embodiment, the quick connector 5 can be implemented in a variety of ways. For example, possible implementations include snap-on quick connectors, threaded quick connectors, or snap-ring quick connectors. These connector forms can achieve quick connection and disassembly without using special tools, thereby improving the convenience of operation. In addition, the sealing performance of the quick connector 5 can also be ensured by providing a sealing ring inside the connector or using a high-precision processing technology, thereby further reducing the risk of leakage.

[0044] Thus, by providing a quick connector 5 for quick release with the end of the gaseous medium output pipe 3 on the gaseous medium chamber 2 and the cooling chamber 6, and providing a quick connector 5 for quick release with the end of the liquid medium input pipe 4 on the liquid medium chamber 1 and the liquid collecting chamber 7, quick connection and disassembly between the gaseous medium chamber 2 and the cooling chamber 6, and between the liquid medium chamber 1 and the liquid collecting chamber 7 can be achieved. This design not only improves the maintenance efficiency and reliability of the system, but also reduces the leakage problem at the interface caused by frequent operation, and improves the overall performance and safety of the system.

[0045] It should be noted that:

[0046] A heat-conducting material 12 is filled between the lower surface of the liquid medium cavity 1 and the heating element 9. This design can effectively improve the heat conduction efficiency between the liquid medium cavity 1 and the heating element 9. By filling the heat-conducting material 12 between the lower surface of the liquid medium cavity 1 and the heating element 9, 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 can solve the problem of heat conduction 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 thermal conductive material 12 can be made of a material with a high thermal conductivity coefficient, such as thermal conductive silicone, thermal conductive paste, thermal conductive gasket, etc. 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 thermal 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 thermal conductive material 12 can be coated on the lower surface of the liquid medium cavity 1, or the thermal conductive material 12 can be made into a gasket and placed directly between the heating element 9 and the liquid medium cavity 1. Therefore, by reasonably selecting and applying thermal conductive materials, the heat conduction efficiency can be significantly improved.

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

Claims

1. A two-phase circulation cooling system, characterized in that: The invention comprises a liquid medium cavity (1) whose lower surface is closely attached to a heating element (9); a gaseous medium cavity (2) is provided above the liquid medium cavity (1) and is in communication with the liquid medium cavity (1); the upper part of the gaseous medium cavity (2) is in communication with a cooling cavity (6) via a gaseous medium output pipe (3); a medium cooling device (61) is provided in the cooling cavity (6); a liquid collecting cavity (7) is provided below the cooling cavity (6) and is in communication with the cooling cavity (6); the lower part of the liquid collecting cavity (7) is directly connected with the liquid medium cavity (1) via a liquid medium input pipe (4); Both ends of the liquid medium input pipe (4) are located 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 (4) is equal.

2. The two-phase circulation cooling system according to claim 1, characterized in that: The liquid medium cavity (1) and the gaseous medium cavity (2) are an integrated cavity, and a grid plate (8) is horizontally provided between the liquid medium cavity (1) and the gaseous medium cavity (2) for separating the two.

3. The two-phase circulation cooling system according to claim 1 or 2, characterized in that: A liquid level sensor (11) is provided on the inner wall of the liquid medium cavity (1).

4. The two-phase circulation cooling system according to claim 1, characterized in that: The cooling cavity (6) and the liquid collecting cavity (7) are an integrated cavity, and a grid plate (8) is horizontally provided between the cooling cavity (6) and the liquid collecting cavity (7) to separate the two.

5. The two-phase circulation cooling system according to claim 1, characterized in that: The gaseous medium cavity (2) and the cooling cavity (6) are both provided with a quick connector (5) that is quickly detachably matched with the end of the gaseous medium output pipe (3).

6. The two-phase circulation cooling system according to claim 1 or 5, characterized in that: The liquid medium chamber (1) and the liquid collecting chamber (7) are both provided with a quick connector (5) that is quickly detachably matched with the end of the liquid medium input pipe (4).

7. The two-phase circulation cooling system according to claim 1, characterized in that: A heat-conducting material (12) is filled between the lower surface of the liquid medium cavity (1) and the heating element (9).

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