Solenoid valve heat dissipation device and solenoid valve

Abstract

This utility model relates to the technical field of hydraulic valves and discloses a solenoid valve heat dissipation device and a solenoid valve. The solenoid valve heat dissipation device includes a heat sink frame and a fan assembly. The heat sink frame includes a heat sink body and heat dissipation fins. The solenoid valve's electromagnetic component is at least partially axially disposed within the heat sink body, and the heat dissipation fins are disposed on the outer periphery of the heat sink body. The fan assembly is axially disposed at one end of the heat sink body and can generate airflow along the axial direction of the heat sink frame. The airflow can form convective heat exchange with the outer periphery of the heat sink body and the heat dissipation fins. This device not only increases the heat dissipation area but also enhances forced convection heat exchange, significantly improving heat dissipation efficiency and reducing the operating temperature of the electromagnetic component.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic valve technology, and in particular to a solenoid valve heat dissipation device and a solenoid valve. Background Technology

[0002] In hydraulic control systems, electromagnetic proportional valves are used to maintain the load of actuators and control the linear reciprocating speed of hydraulic cylinders or the rotary speed of hydraulic motors. Their working principle is that when an electromagnetic coil is energized, it generates a magnetic field. This magnetic field induces a magnetic conductor, which in turn drives the valve core to open and close, thus achieving the return flow of hydraulic oil. However, while the electromagnetic coil converts electrical energy into mechanical energy, it also generates heat. After prolonged operation, almost all the electrical energy is converted into heat. As the coil temperature rises, the coil resistance increases, leading to a decrease in electromagnetic force and causing valve core jamming, which in turn affects hydraulic performance. Typically, a heat sink is added inside the electromagnetic coil to improve heat dissipation, but this method is ineffective, only removing a small portion of the heat generated by the electromagnetic coil.

[0003] Therefore, there is an urgent need for a solenoid valve heat dissipation device and a solenoid valve to solve the above-mentioned technical problems. Utility Model Content

[0004] One objective of this invention is to provide a solenoid valve heat dissipation device that not only increases the heat dissipation area but also enhances forced convection heat transfer, thereby significantly improving heat dissipation efficiency and reducing the operating temperature of the solenoid components.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A solenoid valve heat dissipation device includes:

[0007] A heat sink includes a heat sink body and heat sink fins, wherein at least part of the electromagnetic component of the solenoid valve is disposed axially within the heat sink body, and the heat sink fins are disposed on the outer periphery of the heat sink body;

[0008] A fan assembly is axially disposed at one end of the heat sink. The fan assembly is capable of generating airflow along the axial direction of the heat sink frame. The airflow is capable of convective heat exchange with the outer periphery of the heat sink and the heat sink fins.

[0009] Preferably, multiple heat dissipation fins are provided along the circumference of the heat sink.

[0010] Preferably, the included angle between two adjacent heat dissipation fins is 40°-60°.

[0011] Preferably, the thickness of each heat dissipation fin is 1mm-2mm, and the axial length of each heat dissipation fin along the heat dissipation frame is 20mm-30mm.

[0012] Preferably, the heat sink and the plurality of heat dissipation fins are integrally formed, and both the heat sink and the plurality of heat dissipation fins are made of aluminum alloy.

[0013] Preferably, the fan assembly includes a fan, a heat dissipation gap is formed between two adjacent heat dissipation fins, the fan is coaxially arranged with the heat sink, and the fan is capable of generating an airflow with a velocity of 1m / s-3m / s within the multiple heat dissipation gaps.

[0014] Preferably, the fan assembly further includes a limiting ring, which is disposed on the outer periphery of the hydraulic mechanism of the solenoid valve, and the limiting ring can abut against the end of the heat sink away from the fan.

[0015] Preferably, the fan assembly further includes a mesh cover, a frame, and a locking assembly. The mesh cover is disposed on the outer periphery of the fan, the frame is connected to the outer periphery of the limiting ring, and the locking assembly can lock the mesh cover and the frame.

[0016] Preferably, the frame and the limiting ring are connected by multiple connecting rods, and a heat dissipation space is formed between two adjacent connecting rods.

[0017] Another objective of this invention is to provide a solenoid valve that can ensure the stability of the magnetic field strength, thereby ensuring good hydraulic performance.

[0018] To achieve this objective, the present invention adopts the following technical solution:

[0019] Solenoid valve, including:

[0020] Electromagnetic components;

[0021] A hydraulic mechanism is at least partially disposed axially within the electromagnetic assembly, with one end extending out of the electromagnetic assembly;

[0022] The solenoid valve heat dissipation device has at least a portion of the electromagnetic components arranged axially within the heat dissipation body, and the fan assembly is engaged with one end of the hydraulic mechanism that extends out of the electromagnetic components.

[0023] The beneficial effects of this utility model are:

[0024] This utility model discloses a solenoid valve heat dissipation device. The solenoid valve heat dissipation device includes a heat dissipation frame and a fan assembly. The heat dissipation frame includes a heat sink and heat dissipation fins. The electromagnetic component of the solenoid valve is at least partially disposed axially within the heat sink, and the heat dissipation fins are disposed on the outer periphery of the heat sink. The fan assembly is disposed axially at one end of the heat sink and can generate airflow along the axial direction of the heat dissipation frame. The airflow can form convective heat exchange with the outer periphery of the heat sink and the heat dissipation fins.

[0025] In this structure, a heat sink is located on the outer periphery of the electromagnetic component. Some of the heat can be dissipated through the heat sink, which is equipped with heat dissipation fins on its outer periphery. These fins further increase the heat exchange area, thereby improving the heat dissipation efficiency. In addition, the fan assembly can generate airflow along the axial direction of the heat sink. This airflow can form forced convection heat transfer with the outer periphery of the heat sink and the surface of the heat dissipation fins, thereby maximizing the heat dissipation speed. Thus, under the same operating conditions of the electromagnetic component, not only is the operating temperature of the electromagnetic component reduced, but the increase in coil resistance is also effectively avoided.

[0026] This utility model also discloses a solenoid valve that uses the above-mentioned heat dissipation device to ensure the stability of the magnetic field strength, thereby ensuring good hydraulic effect. Attached Figure Description

[0027] Figure 1 This is an isometric view of the solenoid valve provided by this utility model;

[0028] Figure 2 This is an isometric view of the solenoid valve heat dissipation device provided by this utility model;

[0029] Figure 3 This is an exploded view of the solenoid valve provided by this utility model;

[0030] Figure 4 This is a cross-sectional view of the solenoid valve provided by this utility model.

[0031] In the picture:

[0032] 10. Heat sink bracket; 11. Heat sink body; 111. Notch; 12. Heat sink fins; 13. Heat dissipation gap;

[0033] 20. Fan assembly; 21. Fan; 22. Grille; 23. Limiting ring; 24. Frame; 25. Locking assembly; 251. Fixing rod; 252. Nut; 26. Connecting rod; 27. Heat dissipation space; 28. Drive component; 29. ​​Fixing block;

[0034] 100. Electromagnetic components; 110. Coil; 120. Plug;

[0035] 200. Hydraulic mechanism; 210. Magnetic sleeve; 220. Moving iron; 230. Valve core assembly. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] In the field of hydraulic technology, a solenoid valve is commonly used, which mainly consists of a hydraulic mechanism and an electromagnetic component. The magnetic conductor drives the valve core to open and close, completing normal hydraulic operations. When the coil in the electromagnetic component is energized, it converts electrical energy into mechanical energy and also generates heat. After prolonged operation, almost all the electrical energy is converted into heat. The actual resistance of the coil is R = (0.00393 × (current temperature - 20°C) + 1) × standard resistance value. Therefore, as the coil temperature rises, the coil resistance increases. Under constant voltage conditions, the current through the coil decreases, and the magnetic induction intensity decreases accordingly, leading to a continuous decline in electromagnetic force. Ultimately, this may cause the valve core to jam.

[0041] To address the aforementioned technical problems, this embodiment provides a solenoid valve heat dissipation device, such as... Figures 1-4 As shown, the device includes a heat sink 10 and a fan assembly 20. The heat sink 10 includes a heat sink 11 and heat dissipation fins 12. The electromagnetic component 100 of the solenoid valve is at least partially disposed axially within the heat sink 11, and the heat dissipation fins 12 are disposed on the outer periphery of the heat sink 11. The fan assembly 20 is disposed axially at one end of the heat sink 11. The fan assembly 20 can generate airflow along the axial direction of the heat sink 10, and the airflow can form convective heat exchange with the outer periphery of the heat sink 11 and the heat dissipation fins 12.

[0042] In this structure, the heat sink 10 is disposed on the outer periphery of the electromagnetic component 100. Some of the heat can be dissipated through the heat sink 11, and the outer periphery of the heat sink 11 is provided with heat dissipation fins 12, which further increases the heat exchange area and thus improves the heat dissipation efficiency. In addition, the fan assembly 30 can generate airflow along the axial direction of the heat sink 10. This airflow can form forced convection heat exchange with the outer periphery of the heat sink 11 and the surface of the heat dissipation fins 12, thereby maximizing the heat dissipation speed. Thus, under the condition that the operating conditions of the electromagnetic component 100 remain unchanged, not only is the operating temperature of the electromagnetic component 100 reduced, but the resistance of the coil 110 is also effectively avoided from increasing.

[0043] Based on this device, this embodiment also provides a solenoid valve, such as... Figures 1-4 As shown, the solenoid valve includes a solenoid assembly 100, a hydraulic mechanism 200, and the aforementioned solenoid valve heat dissipation device; wherein the hydraulic mechanism 200 is at least partially axially disposed within the solenoid assembly 100, with one end extending out of the solenoid assembly 100; at least a portion of the solenoid assembly 100 is axially disposed within the heat sink 11, and the fan assembly 20 is engaged with the end of the hydraulic mechanism 200 extending out of the solenoid assembly 100.

[0044] like Figures 1-4As shown, coil 110 is disposed on the outer periphery of magnetic sleeve 210 and electrically connected to plug 120. Moving iron 220 is axially disposed inside magnetic sleeve 210, and valve core assembly 230 is disposed at the end of moving iron 220 away from magnetic sleeve 210. When coil 110 is energized through plug 120, a magnetic field is generated. After sensing the magnetic field, magnetic sleeve 210 can drive valve core assembly 230 to move through moving iron 220, thereby completing hydraulic operation. This electromagnetic system utilizes the aforementioned heat dissipation device to dissipate heat from coil 110 in a timely manner, ensuring the stability of magnetic field strength and thus producing a good hydraulic effect.

[0045] Specifically, such as Figure 1 and Figure 3 As shown, multiple heat dissipation fins 12 are arranged along the circumference of the heat sink 11. This arrangement can further increase the heat exchange area, thereby further improving the heat dissipation rate. The arrangement of multiple heat dissipation fins 12 along the outer periphery of the heat sink 11 can ensure the uniformity of heat dissipation, avoid the situation of poor local heat dissipation efficiency, and ensure the stability of the magnetic field.

[0046] like Figure 3 As shown, the included angle between two adjacent heat dissipation fins 12 is 40°-60°. This arrangement allows for 6-9 heat dissipation fins 12 to be arranged on the outer periphery of the heat sink 11, ensuring uniform heat dissipation while avoiding the situation where the spacing between two adjacent heat dissipation fins 12 is too small, thus reducing heat dissipation efficiency. In this embodiment, a total of 9 heat dissipation fins 12 are provided, and the spacing between two adjacent heat dissipation fins 12 is 40°.

[0047] In this embodiment, the thickness of each heat dissipation fin 12 is 1mm-2mm, and the axial length of each heat dissipation fin 12 along the heat dissipation frame 10 is 20mm-30mm. This arrangement can further expand the heat exchange area, thereby significantly improving the heat dissipation rate. Furthermore, compared to the structure without heat dissipation fins 12, the structure in this embodiment can increase the heat exchange area by 61%.

[0048] Furthermore, in this embodiment, the heat sink 11 and the plurality of heat dissipation fins 12 are integrally formed, and both the heat sink 11 and the plurality of heat dissipation fins 12 are made of aluminum alloy. The integrally formed structure reduces the processing difficulty and prevents the heat dissipation fins 12 from falling off the heat sink 11. Aluminum alloy is lightweight, has good corrosion resistance, is easy to process, and has good thermal conductivity, which can improve heat dissipation efficiency.

[0049] like Figures 1-4As shown, the fan assembly 20 includes a fan 21, with heat dissipation gaps 13 formed between adjacent heat dissipation fins 12. The fan 21 is coaxially arranged with the heat sink 11, and the fan 21 can generate an airflow with a velocity of 1m / s-3m / s within the multiple heat dissipation gaps 13. The coaxial arrangement of the fan 21 and the heat sink 11 ensures that the fan blades of the fan 21 are aligned with the heat dissipation gaps 13. Therefore, the airflow generated by the fan blades after the fan 21 rotates can directly flow into the heat dissipation gaps 13. The airflow within the heat dissipation gaps 13 quickly carries away the heat from the heat dissipation fins 12 on both sides and the outer periphery of the corresponding heat sink 11, thereby ensuring good heat dissipation efficiency. Furthermore, in this embodiment, the airflow velocity is 1m / s-3m / s, which can improve the heat intensity by 5-10 times compared to natural convection heat transfer.

[0050] In addition, in this embodiment, a notch 111 is provided at the end of the heat sink 11 away from the fan 21. This notch 111 is used to install the plug 120. At the same time, the heat dissipation gap 13 where the notch 111 is located can also accommodate the plug 120, so as to avoid interference between the plug 120 and the heat sink 11.

[0051] like Figures 1-4 As shown, the fan assembly 20 also includes a limiting ring 23, which is disposed on the outer periphery of the hydraulic mechanism 200 of the solenoid valve, and the limiting ring 23 can abut against the end of the heat sink 10 away from the fan 21. This arrangement can prevent the heat sink 10 from falling off axially, thereby ensuring good performance. Furthermore, the hydraulic mechanism 200 can also pass through the limiting ring 23, thereby improving the convenience of silent operation.

[0052] In addition, such as Figures 1-4 As shown, the fan assembly 20 also includes a mesh cover 22, a frame 24, and a locking assembly 25. The mesh cover 22 is disposed on the outer periphery of the fan 21, the frame 24 is connected to the outer periphery of the limiting ring 23, and the locking assembly 25 can lock the mesh cover 22 and the frame 24. In this structure, the mesh cover 22 can cover the outer periphery of the fan 21, ensuring the safety of the operation process; at the same time, the locking assembly 25 can connect the frame 24 and the mesh cover 22 into one unit, and the frame 24 is connected to the limiting ring 23, ensuring the compactness and stability of the overall structure.

[0053] It should be noted that, as Figures 1-4As shown, the drive component 28 is disposed inside the mesh cover 22, and the drive end of the drive component 28 is connected to the center of the fan 21 and passes through the fan 21. The end of the drive component 28 that extends through the fan 21 is connected to a fixing block 29. The fixing block 29 is sleeved on the end of the hydraulic mechanism 200 that extends out of the electromagnetic component 100, and the drive end can rotate relative to the fixing block 29. When the drive component 28 is working, its drive end drives the fan 21 to rotate and form an airflow. At this time, the fixing block 29 is fixed to the end of the hydraulic mechanism 200 that extends out of the electromagnetic component 100, and the drive end rotates relative to the fixing block 29. The overall structure is simple and can ensure the stability and safety of the fan assembly 20 during operation.

[0054] In addition, such as Figures 1-4 As shown, in this embodiment, the locking assembly 25 includes a fixing rod 251 and a nut 252. The fixing rod 251 is arranged circumferentially along the mesh cover 22, and its end can pass through the frame 24. The nut 252 can lock the end that passes through the frame 24, thereby fixing the frame 24 and the mesh cover 22 together, ensuring good stability and ease of installation. At the same time, the detachable connection method can also ensure the convenience of subsequent maintenance.

[0055] In addition, such as Figure 3 As shown, the frame 24 and the limiting ring 23 are connected by multiple connecting rods 26, and a heat dissipation space 27 is formed between adjacent connecting rods 26. This arrangement not only ensures a stable connection effect, but also allows the airflow passing through the heat dissipation gap 13 to flow out through the heat dissipation space 27, thereby further improving the heat dissipation rate and ensuring a good heat dissipation effect. It should be noted that in this embodiment, the limiting ring 23, the frame 24, and the connecting rods 26 are integrally formed, thereby significantly reducing the processing difficulty.

[0056] In summary, the solenoid valve heat dissipation device in this embodiment can increase the heat exchange area, increase forced convection heat exchange, significantly improve heat dissipation efficiency, and significantly reduce the operating temperature of the solenoid component 100. This can increase the service life of the solenoid component 100, expand the application range of the solenoid component 100, ensure the stability of the magnetic field, and enable the solenoid valve to have good hydraulic performance.

[0057] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An electromagnetic valve heat dissipating device characterized by comprising: include: The heat sink (10) includes a heat sink (11) and heat sink fins (12), wherein at least part of the electromagnetic component (100) of the solenoid valve is disposed axially within the heat sink (11), and the heat sink fins (12) are disposed on the outer periphery of the heat sink (11). A fan assembly (20) is axially disposed at one end of the heat sink (11). The fan assembly (20) is capable of generating airflow along the axial direction of the heat sink frame (10). The airflow is capable of forming convective heat exchange with the outer periphery of the heat sink (11) and the heat sink fins (12).

2. The electromagnetic valve heat sink device of claim 1, wherein Multiple heat dissipation fins (12) are arranged along the circumference of the heat sink (11).

3. The electromagnetic valve heat sink of claim 2, wherein The included angle between two adjacent heat dissipation fins (12) is 40°-60°.

4. The electromagnetic valve heat sink of claim 3, wherein The thickness of each heat dissipation fin (12) is 1mm-2mm, and the axial length of each heat dissipation fin (12) along the heat dissipation frame (10) is 20mm-30mm.

5. The solenoid valve heat dissipation device according to claim 2, characterized in that, The heat sink (11) and the plurality of heat dissipation fins (12) are integrally formed, and the heat sink (11) and the plurality of heat dissipation fins (12) are all made of aluminum alloy.

6. The electromagnetic valve heat sink of claim 2, wherein The fan assembly (20) includes a fan (21), and a heat dissipation gap (13) is formed between two adjacent heat dissipation fins (12). The fan (21) is coaxially arranged with the heat sink (11), and the fan (21) is able to form an airflow with a velocity of 1m / s-3m / s within the multiple heat dissipation gaps (13).

7. The electromagnetic valve heat sink of claim 6, wherein The fan assembly (20) also includes a limiting ring (23), which is disposed on the outer periphery of the hydraulic mechanism (200) of the solenoid valve, and the limiting ring (23) can abut against the end of the heat sink (10) away from the fan (21).

8. The electromagnetic valve heat sink of claim 7, wherein The fan assembly (20) also includes a mesh cover (22), a frame (24) and a locking assembly (25). The mesh cover (22) is disposed on the outer periphery of the fan (21), the frame (24) is connected to the outer periphery of the limiting ring (23), and the locking assembly (25) can lock the mesh cover (22) and the frame (24).

9. The electromagnetic valve heat sink of claim 8, wherein, The frame (24) and the limiting ring (23) are connected by multiple connecting rods (26), and a heat dissipation space (27) is formed between two adjacent connecting rods (26).

10. Solenoid valve, characterized in that include: Electromagnetic component (100); A hydraulic mechanism (200) is at least partially disposed axially within the electromagnetic assembly (100), with one end extending out of the electromagnetic assembly (100); According to any one of claims 1-9, in the solenoid valve heat dissipation device, at least a portion of the electromagnetic component (100) is arranged axially within the heat sink (11), and the fan assembly (20) and the hydraulic mechanism (200) are engaged with one end of the solenoid component (100).

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