Hydraulic oil soaking type cooling structure

Abstract

The invention provides a hydraulic oil soaking type cooling structure, and belongs to the technical field of injection machines. A hydraulic oil soaking type cooling structure comprises a hydraulic oil tank and a cooling pipe. The inlet connector and the outlet connector are arranged on the side wall of the hydraulic oil tank storing hydraulic oil, the cooling pipe is arranged in the hydraulic oil tank, the two ends of the cooling pipe are connected with the inlet connector and the outlet connector correspondingly, and meanwhile the cooling pipe is immersed below the liquid level of the hydraulic oil in the hydraulic oil tank; when a refrigerant flows in the cooling pipe through the inlet connector and the outlet connector, the refrigerant can continuously exchange heat with hydraulic oil in the hydraulic oil tank, the use requirement of hydraulic oil immersion type cooling is met, the influence of whether a hydraulic system runs or not is avoided, the use limitation is smaller, meanwhile, the cooling pipe is directly arranged in the hydraulic oil tank for cooling, and the cooling efficiency is improved. The structure is simple, the external space is not occupied, the cost is lower, and the practicability is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding machines, and particularly to a hydraulic oil immersion cooling structure. Background Art

[0002] An injection molding machine is a device used for the molding of thermoplastic or thermosetting plastics, and has a wide range of applications in the production of electrical parts, seals, soles, etc., with broad market prospects.

[0003] Since the injection molding machine operates in a high-temperature environment, and the operation of its clamping mechanism, injection mechanism and other structures requires the drive of a hydraulic system, when the hydraulic oil in the hydraulic system is at a high temperature, it will accelerate the oxidation and deterioration of the hydraulic oil, shorten the service life of related seals, and at the same time, it will also cause the viscosity of the hydraulic oil to decrease, affecting its lubrication performance and pressure transmission efficiency, and even causing problems such as system leakage and cavitation. Therefore, in the industry, a hydraulic oil cooling structure is usually configured on the injection molding machine to cool the hydraulic oil in the hydraulic system. At present, the existing hydraulic oil cooling structures on the market, such as a vertical injection molding machine for reducing the use cost disclosed in Patent CN210758826U, the oil outlet end of its hydraulic oil tank is sequentially connected to the oil pump motor and the main oil inlet pipe of the oil circuit board, the main oil return port of the oil circuit board is connected with a three-way joint, one end of the three-way joint is connected to the material pipe cooling component, the other end of the three-way joint is connected to the oil inlet pipe of the air cooler, a flow control valve is provided between the three-way joint and the air cooler oil inlet, the outlet of the material pipe cooling component is connected to the oil inlet pipe of the air cooler, and the oil return port of the air cooler is connected to the hydraulic oil tank pipeline. After the hydraulic oil flowing back to the hydraulic oil tank passes through the three-way joint, a part of the hydraulic oil enters the air cooler for cooling and then directly flows back into the hydraulic oil tank, and another part of the hydraulic oil enters the material pipe cooling component, and then the oil return port of the material pipe cooling component is directly connected to the oil inlet of the air cooler, and after being cooled by the air cooler, it flows into the hydraulic oil tank. In addition, the hydraulic flow rate entering the air cooler is controlled by the flow control valve to ensure the cooling effect. Although the above structure can already achieve the cooling of the hydraulic oil, however, it is installed on the return oil pipeline of the hydraulic system. To ensure the cooling effect, the return oil resistance is usually appropriately increased and the return oil flow rate is reduced, resulting in a back pressure of the hydraulic system's return oil, which interferes with the normal operation of the hydraulic system. Secondly, its cooling process requires the entire hydraulic system to operate, that is, the hydraulic pump in the hydraulic system needs to operate so that the hydraulic oil can pass through the cooling structure, and the hydraulic oil cannot be cooled when the hydraulic system is not working, there is a problem of usage limitation. In addition, although there is also a directly independent cooling system outside the hydraulic oil tank on the market to cool the hydraulic oil, however, it requires additional large space, has a complex structure, and is costly, with poor practicability. Summary of the Invention

[0004] In view of the above problems existing in the prior art, the present invention aims to provide a hydraulic oil immersion cooling structure, in which a cooling pipe immersed below the liquid level is arranged in a hydraulic oil tank, and after the refrigerant passes through the cooling pipe, it directly exchanges heat with the hydraulic oil in the hydraulic oil tank to achieve the cooling of the hydraulic oil, making full use of the internal space of the hydraulic oil tank, avoiding the problem of space occupation, and directly continuously cooling the hydraulic oil in the hydraulic oil tank without the need for the entire hydraulic system to operate for cooling, with less use restrictions, simple structure, low cost and better practicability.

[0005] The specific technical solution is as follows: A hydraulic oil immersion cooling structure includes a hydraulic oil tank in which hydraulic oil is stored at a predetermined liquid level height, and has the following characteristics: it further includes a cooling pipe. An inlet joint and an outlet joint are arranged on the side wall of the hydraulic oil tank, and both ends of the cooling pipe are respectively connected to the inlet joint and the outlet joint. Moreover, the cooling pipe is immersed below the liquid level of the hydraulic oil, and the inlet joint and the outlet joint are respectively connected to the output port and the recovery port of the refrigerant supply device through pipelines.

[0006] In the above-mentioned hydraulic oil immersion cooling structure, the refrigerant is cooling water.

[0007] In the above-mentioned hydraulic oil immersion cooling structure, it further includes a flow-promoting component which is arranged on the hydraulic oil tank and one end extends into the hydraulic oil tank to promote the flow of the hydraulic oil in the hydraulic oil tank.

[0008] In the above-mentioned hydraulic oil immersion cooling structure, the flow-promoting component is a return pipe. The upper end of the return pipe is installed on the oil return port of the hydraulic oil tank, and the lower end of the return pipe is inclined and bent downward to the side.

[0009] In the above-mentioned hydraulic oil immersion cooling structure, several groups of flow-promoting components are provided, and the lower ends of several groups of flow-promoting components are arranged in the same direction.

[0010] In the above-mentioned hydraulic oil immersion cooling structure, the cooling pipe is of a spiral structure.

[0011] In the above-mentioned hydraulic oil immersion cooling structure, it further includes a disassembly and assembly plate. An installation opening penetrating the inner and outer sides of the hydraulic oil tank is provided on the side wall of the hydraulic oil tank, and the disassembly and assembly plate is detachably installed at the installation opening, and both the inlet joint and the outlet joint are installed on the disassembly and assembly plate.

[0012] The positive effects of the above technical solution are: The above-mentioned hydraulic oil immersion cooling structure is provided with an inlet joint and an outlet joint on the side wall of the hydraulic oil tank, and a cooling pipe is installed in the hydraulic oil tank and its two ends are respectively connected to the inlet joint and the outlet joint. Moreover, the cooling pipe is immersed below the liquid level of the hydraulic oil in the hydraulic oil tank. When the refrigerant flows through the cooling pipe through the inlet joint and the outlet joint, heat exchange can be directly carried out between the cooling pipe and the hydraulic oil in the hydraulic oil tank, realizing the immersion cooling of the hydraulic oil, meeting the continuous cooling demand, avoiding the problem that the hydraulic oil cannot be cooled continuously after the hydraulic system stops, having fewer usage restrictions. Moreover, the cooling pipe is directly arranged in the hydraulic oil tank, which not only has a simple structure, but also does not need to occupy external space, has a lower cost, and better practicability. Description of the Drawings

[0013] Figure 1 It is a structural diagram of an embodiment of a hydraulic oil immersion cooling structure of the present invention; Figure 2 It is a cross-sectional view of a hydraulic oil immersion cooling structure of the present invention.

[0014] Figure 3 It is a structural diagram of a hydraulic oil immersion cooling structure of the present invention after opening the hydraulic oil tank.

[0015] In the drawings: 1. Hydraulic oil tank; 11. Installation port; 2. Cooling pipe; 3. Disassembly and assembly plate; 31. Inlet joint; 32. Outlet joint; 4. Flow-promoting component; 41. Return oil pipe; 5. Liquid pump; 6. Return oil pipeline. Detailed Embodiment

[0016] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the following embodiments are combined with the attached Figure 1 to the attached Figure 3 to specifically elaborate on the technical solutions provided by the present invention, but the following content is not a limitation of the present invention.

[0017] Figure 1 It is a structural diagram of an embodiment of a hydraulic oil immersion cooling structure of the present invention; Figure 2 It is a cross-sectional view of a hydraulic oil immersion cooling structure of the present invention. Figure 3 It is a structural diagram of a hydraulic oil immersion cooling structure of the present invention after opening the hydraulic oil tank. As Figure 1 and Figure 2 shown, the hydraulic oil immersion cooling structure provided in this embodiment includes: a hydraulic oil tank 1 and a cooling pipe 2, and moreover, the cooling pipe 2 is installed in the hydraulic oil tank 1.

[0018] Specifically, the hydraulic oil tank 1 is used as the oil tank of the entire hydraulic system. The hydraulic pump 5 extracts hydraulic oil from the hydraulic oil tank 1 for driving the various mechanisms of the injection machine, and the used hydraulic oil flows back into the hydraulic oil tank 1. At this time, the hydraulic oil tank 1 stores hydraulic oil at a predetermined liquid level height, meeting the oil circuit supply requirements of the entire hydraulic system.

[0019] Specifically, an inlet connector 31 and an outlet connector 32 are provided on the side wall of the hydraulic oil tank 1. The connection of the subsequent cooling-related pipelines is facilitated through the inlet connector 31 and the outlet connector 32, meeting the quick-disassembly requirement, and facilitating subsequent assembly and later maintenance and repair. At this time, both ends of the cooling pipe 2 are respectively connected to the inlet connector 31 and the outlet connector 32, so that the refrigerant entering the cooling pipe 2 from the inlet connector 31 will flow out from the outlet connector 32, realizing the flow of the refrigerant in the cooling pipe 2 and providing conditions for the heat exchange between the refrigerant in the cooling pipe 2 and the hydraulic oil in the hydraulic oil tank 1. Moreover, the cooling pipe 2 is immersed below the liquid level of the hydraulic oil, so that the cooling pipe 2 can always be immersed in the hydraulic oil in the hydraulic oil tank 1, realizing immersion cooling. Even when the hydraulic system is not operating, the cooling pipe 2 can still cool the hydraulic oil, with less use restrictions and better practicability. In addition, the cooling pipe 2 is arranged inside the hydraulic oil tank 1, without occupying additional external space, and the space utilization is more reasonable. Moreover, only one cooling pipe 2 is used for cooling, with a simple structure and low cost. At the same time, the inlet connector 31 and the outlet connector 32 are also respectively connected to the output port and the recovery port of the refrigerant supply device through pipelines, so that the low-temperature refrigerant generated by the refrigerant supply device can flow to the inlet connector 31 after being discharged from the output port, enter the cooling pipe 2 through the inlet connector 31, and then flow out from the outlet connector 32 after heat exchange with the hydraulic oil in the hydraulic oil tank 1 in the cooling pipe 2. Moreover, the heat-exchanged refrigerant flowing out from the outlet connector 32 will enter the refrigerant supply device through the recovery port for cooling, thus meeting the use requirement of cooling the hydraulic oil in the hydraulic oil tank 1.

[0020] More specifically, the refrigerant flowing in the cooling pipe 2 and performing heat exchange with the hydraulic oil is cooling water. Preferably, the refrigerant supply device is a cooling water tower. Since the use scenario of the injection machine is a processing factory, and the processing factory is usually equipped with a cooling water system, therefore, using cooling water as the refrigerant to cool the hydraulic oil can directly utilize the existing resources, without the need to purchase additional relevant cooling equipment, and the cooling water is easy to obtain, with low cost and no pollution, and is easy to promote and use.

[0021] More specifically, a flow-promoting component 4 is further provided in the hydraulic oil tank 1. At this time, the flow-promoting component 4 is arranged on the hydraulic oil tank 1 and one end extends into the hydraulic oil tank 1, ensuring that the hydraulic oil tank 1 serves as the installation carrier of the flow-promoting component 4, improving the installation stability of the flow-promoting component 4, and at the same time enabling the flow-promoting component 4 to act on the hydraulic oil in the hydraulic oil tank 1. The flow-promoting component 4 is used to push the hydraulic oil in the hydraulic oil tank 1 to flow, so that the hydraulic oil in the hydraulic oil tank 1 can flow relative to the cooling pipe 2, avoiding the problem of uneven cooling, preventing the hydraulic oil near the cooling pipe 2 from having a lower temperature while the temperature of the hydraulic oil in other areas does not drop enough, improving the cooling efficiency and achieving a better cooling effect.

[0022] More specifically, the flow-promoting component 4 for pushing the hydraulic oil to flow is a return oil pipe 41. At this time, the upper end of the return oil pipe 41 is installed on the oil return port of the hydraulic oil tank 1, so that when the hydraulic oil used by the hydraulic system flows back to the tank through the oil return port, it will flow through the return oil pipe 41. At this time, the lower end of the return oil pipe 41 is inclined and bent downward to the side, so that the hydraulic oil flowing back into the hydraulic oil tank 1 from the return oil pipe 41 can flow out along the lower oblique direction, thereby pushing the original hydraulic oil in the hydraulic oil tank 1 to flow, so that the hydraulic oil in the hydraulic oil tank 1 can form a vortex-like eddy current, swirling in the hydraulic oil tank 1, thereby promoting the hydraulic oil in various parts of the hydraulic oil tank 1 to repeatedly pass through the cooling pipe 2, thereby enhancing the cooling effect. In addition, when the hydraulic oil in the hydraulic oil tank 1 is swirling, the length of the cooling pipe 2 only needs to meet half of the width or length of the hydraulic oil tank 1, and it can still meet the use requirements for cooling all the hydraulic oil in the hydraulic oil tank 1, thereby reducing the layout of the cooling pipe 2 and lowering the cost.

[0023] More specifically, several groups of flow-promoting components 4 are provided on the hydraulic oil tank 1. By increasing the number of flow-promoting components 4, it is possible to adapt to multiple oil return pipelines 6 of the hydraulic system. At the same time, it can also enhance the pushing effect on the hydraulic oil in the hydraulic oil tank 1, making the flow rate of the hydraulic oil in the hydraulic oil tank 1 faster, the cooling more uniform, and the cooling efficiency higher. And the lower ends of several groups of flow-promoting components 4 are arranged in the same direction, so that the hydraulic oil flowing back into the hydraulic oil tank 1 from the oil return port through the return oil pipe 41 can flow out in the same direction, thereby pushing the hydraulic oil in the hydraulic oil tank 1 to flow in the same direction, achieving a better stirring effect on the hydraulic oil and further enhancing the cooling effect.

[0024] More specifically, the cooling pipe 2 for the refrigerant to flow is of a spiral structure, which can extend the total length of the cooling pipe 2 in a limited length space, thereby extending the flow stroke of the refrigerant in the hydraulic oil tank 1, making the heat exchange time between the refrigerant and the hydraulic oil longer, and achieving a better cooling effect.

[0025] More specifically, a disassembly and assembly plate 3 is further provided on the hydraulic oil tank 1. At this time, an installation opening 11 penetrating the inner and outer sides of the hydraulic oil tank 1 is formed on the side wall of the hydraulic oil tank 1. The installation opening 11 facilitates the disassembly and assembly of structures such as the cooling pipe 2 in the hydraulic oil tank 1, providing convenience for maintenance and repair after subsequent use. In addition, the disassembly and assembly plate 3 is detachably installed at the installation opening 11. The disassembly and assembly plate 3 is used to close and open the installation opening 11, facilitating the disassembly and assembly of the cooling pipe 2, and at the same time ensuring the normal use of the hydraulic oil tank 1. Moreover, the inlet joint 31 and the outlet joint 32 are both installed on the disassembly and assembly plate 3. That is, the disassembly and assembly plate 3 serves as the installation carrier for the inlet joint 31 and the outlet joint 32. When the disassembly and assembly plate 3 is disassembled and assembled, the disassembly and assembly of the cooling pipe 2 in the hydraulic oil tank 1 can be achieved, and the operation is more convenient.

[0026] The hydraulic oil immersion cooling structure provided in this embodiment includes a hydraulic oil tank 1 and a cooling pipe 2. By providing an inlet joint 31 and an outlet joint 32 on the side wall of the hydraulic oil tank 1 storing hydraulic oil, and arranging the cooling pipe 2 in the hydraulic oil tank 1 with both ends respectively connected to the inlet joint 31 and the outlet joint 32. At the same time, the cooling pipe 2 is immersed below the liquid level of the hydraulic oil in the hydraulic oil tank 1. When the refrigerant flows through the cooling pipe 2 through the inlet joint 31 and the outlet joint 32, it can continuously exchange heat with the hydraulic oil in the hydraulic oil tank 1, meeting the use requirements of hydraulic oil immersion cooling. Moreover, it is not affected by whether the hydraulic system is running, and the use limit is smaller. At the same time, the cooling pipe 2 is directly arranged in the hydraulic oil tank 1 for cooling, which not only has a simple structure, does not occupy external space, and has a lower cost, but also further improves the practicability.

[0027] The above are only preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly. For those skilled in the art, it should be able to realize that all equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic oil immersion cooling structure, comprising a hydraulic oil tank in which hydraulic oil is stored at a predetermined liquid level height, characterized in that, Further comprising: A cooling pipe, an inlet joint and an outlet joint are provided on the side wall of the hydraulic oil tank. The two ends of the cooling pipe are respectively connected to the inlet joint and the outlet joint, and the cooling pipe is immersed below the liquid level of the hydraulic oil. The inlet joint and the outlet joint are respectively connected to the output port and the recovery port of the refrigerant supply device through pipelines.

2. The hydraulic oil immersion cooling structure according to claim 1, wherein, The refrigerant is cooling water.

3. The hydraulic oil immersion cooling structure according to claim 1, characterized in that, Further comprising a flow promoting component, the flow promoting component is arranged on the hydraulic oil tank and one end extends into the hydraulic oil tank to promote the flow of the hydraulic oil in the hydraulic oil tank.

4. The hydraulic oil immersion cooling structure according to claim 3, characterized in that, The flow promoting component is a return oil pipe, the upper end of the return oil pipe is installed on the oil return port of the hydraulic oil tank, and the lower end of the return oil pipe is inclined and bent downward to the side.

5. The hydraulic oil immersion cooling structure according to claim 4, wherein, There are several groups of the flow promoting components, and the lower ends of several groups of the flow promoting components are arranged in the same direction.

6. The hydraulic oil immersion cooling structure according to claim 1, characterized in that The cooling pipe is of a spiral structure.

7. The hydraulic oil immersion cooling structure according to claim 6, characterized in that, Further comprising a disassembly and assembly plate, an installation opening penetrating the inner and outer sides of the hydraulic oil tank is formed on the side wall of the hydraulic oil tank, the disassembly and assembly plate is detachably installed at the installation opening, and the inlet joint and the outlet joint are both installed on the disassembly and assembly plate.

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