Flameout electromagnetic valve coil

Abstract

The utility model provides a flameout electromagnetic valve coil, and belongs to the technical field of electromagnetic valve accessories. The problem that an existing flameout electromagnetic valve is poor in coil winding effect is solved. The flameout solenoid valve coil comprises a coil holder, a first winding groove and a second winding groove are formed in the two sides of the exterior of the coil holder respectively, a thin copper wire is wound on the inner wall of the first winding groove, a thick copper wire is wound on the inner wall of the second winding groove, and a high-heat-conduction insulating layer is arranged on the inner wall of the second winding groove and located on the outer side of the thick copper wire. And the inner walls of the winding groove I and the winding groove II and the gap between the thin copper wire and the thick copper wire are filled with a paraffin-based phase change filler. The winding device has the advantages of being reasonable in structural design, good in winding effect, good in electromagnetic performance and the like.

Description

Technical Field

[0001] This utility model belongs to the technical field of solenoid valve accessories, and specifically relates to a flameout solenoid valve coil. Background Technology

[0002] A solenoid valve coil generates electromagnetic force when energized, driving the valve core to control fluid flow. Direct-acting coils directly pull the valve core, while pilot-operated coils indirectly control the main valve body through pressure differential. Step-by-step direct-acting valves combine direct-acting and pilot-operated structures, suitable for various pressure differential scenarios.

[0003] The solenoid valve coil is an important component of the solenoid valve for an automotive engine. In existing solenoid valves, a thick coil is first wound on a coil frame, and then a thin coil is wound around the outside of the thick coil. When the thick coil is wound unevenly, it will affect the winding precision of the thin coil and directly weaken the electromagnetic performance. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a flameout solenoid valve coil with a reasonable structural design and good electromagnetic performance.

[0005] The objective of this utility model can be achieved through the following technical solution: a flameout solenoid valve coil, comprising a wire frame, with a winding groove 1 and a winding groove 2 respectively formed on both sides of the outer surface of the wire frame. The inner wall of the winding groove 1 is wound with fine copper wire, and the inner wall of the winding groove 2 is wound with coarse copper wire. A high thermal conductivity insulating layer is provided on the inner wall of the winding groove 2, outside the coarse copper wire. Paraffin-based phase change filler is filled in the gaps between the fine and coarse copper wires on the inner walls of the winding grooves 1 and 2. The paraffin-based phase change filler can absorb and slowly release the instantaneous heat generated by the coarse and fine copper wires during operation, preventing localized overheating.

[0006] This flameout solenoid valve coil utilizes a combination of thick and thin copper wires, ensuring they do not interfere with each other and achieve excellent winding results. The large cross-sectional area of ​​the thick copper wire allows for a larger current flow, making it suitable for high-power or high-load applications while reducing heat generation and losses caused by excessive current. The thin copper wire, while having higher resistance, has a smaller cross-sectional area, reducing material usage and overall cost for light loads or low-power applications. Furthermore, the magnetic field strength can be adjusted by increasing the number of turns to meet specific electromagnetic performance requirements. The smaller diameter of the thin copper wire reduces the space required during winding, facilitating increased winding density within limited slots and improving stator slot fill rate, thus optimizing the magnetic circuit design. Meanwhile, the high mechanical strength of the thick copper wire provides better tensile and torsional resistance, enabling it to withstand high-frequency vibrations and mechanical stresses in high-power motors and reducing the risk of wire breakage. Moreover, the combination of thick and thin copper wires optimizes conductor layout, improves heat dissipation, and reduces copper loss and temperature rise.

[0007] In the aforementioned flameout solenoid valve coil, several heat dissipation fins are connected to one side of the wire frame, and these fins are located on one side of the thick copper wire. The heat dissipation fins utilize air convection to improve the passive heat dissipation efficiency of the flameout solenoid valve coil.

[0008] In the aforementioned flameout solenoid valve coil, the fine copper wire is coated with a silver-plated layer. By plating the fine copper wire with silver, the contact resistance temperature rise can be reduced, extending its service life.

[0009] In the aforementioned flameout solenoid valve coil, a notch is provided at the center of the top outer part of the coil frame, between winding groove one and winding groove two, and a slot is provided at the bottom of the inner wall of the notch. The slot facilitates the installation of the T-shaped partition.

[0010] In the aforementioned flameout solenoid valve coil, a T-shaped partition is inserted into the inner wall of the slot, and both sides of the T-shaped partition are covered with high-temperature resistant insulating tape. The high-temperature resistant insulating tape prevents interlayer short circuits between the thin and thick copper wires.

[0011] Compared with existing technologies, the advantages of this flameout solenoid valve coil are: the combination design of thick and thin copper wires does not interfere with each other, the winding effect is good, and the electromagnetic performance is good. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a view of the end face of the fine copper wire structure of this utility model.

[0014] Figure 3 This is a utility model Figure 1 A magnified view of A in the middle.

[0015] In the diagram, 1. Wire frame; 2. Winding groove one; 3. Fine copper wire; 4. Paraffin-based phase change filler; 5. High thermal conductivity insulation layer; 6. Coarse copper wire; 7. Winding groove two; 8. Heat dissipation fins; 9. Silver plating layer; 10. High temperature resistant insulating tape; 11. T-shaped partition; 12. Notch; 13. Slot. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figure 1 , Figure 2 and Figure 3As shown, the flameout solenoid valve coil includes a wire frame 1. Two winding grooves 2 and 7 are respectively opened on the outer sides of the wire frame 1. The inner wall of the winding groove 2 is wound with a fine copper wire 3, and the inner wall of the winding groove 7 is wound with a coarse copper wire 6. A high thermal conductivity insulating layer 5 is provided on the inner wall of the winding groove 7 and outside the coarse copper wire 6. The inner walls of the winding groove 2 and the winding groove 7 and the gap between the fine copper wire 3 and the coarse copper wire 6 are filled with a paraffin-based phase change filler 4.

[0018] To elaborate further, several heat dissipation fins 8 are connected to one side of the wire frame 1, and the heat dissipation fins 8 are located on one side of the thick copper wire 6. The thin copper wire 3 is wrapped with a silver plating layer 9.

[0019] A notch 12 is provided at the center of the top of the wire frame 1, between the first winding groove 2 and the second winding groove 7. A slot 13 is provided at the bottom of the inner wall of the notch 12. A T-shaped partition 11 is inserted into the inner wall of the slot 13. High-temperature resistant insulating tape 10 is attached to both sides of the T-shaped partition 11.

[0020] In use, the combination of thick copper wire 6 and thin copper wire 3 does not interfere with each other, resulting in good winding effect. The large cross-sectional area of ​​thick copper wire 6 allows for a larger current flow, making it suitable for high-power or high-load scenarios, reducing heat generation and losses caused by excessive current. While thin copper wire 3 has higher resistance, its smaller cross-sectional area reduces material usage and overall cost for light loads or low-power applications. Furthermore, the magnetic field strength can be adjusted by increasing the number of turns to meet specific electromagnetic performance requirements. The smaller diameter of thin copper wire 3 reduces the space required during winding, facilitating increased winding density within limited slots and improving the fill rate of winding slot 2, thereby optimizing the magnetic circuit design. Meanwhile, the high mechanical strength of thick copper wire 6 provides better tensile and torsional resistance, enabling it to withstand high-frequency vibrations and mechanical stresses in high-power motors and reducing the risk of wire breakage. Moreover, the combination of thick copper wire 6 and thin copper wire 3 optimizes conductor layout, improves heat dissipation, and reduces copper loss and temperature rise.

[0021] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A flame arrestor solenoid valve coil comprising a bobbin (1), characterized in that: The wire rack (1) is externally provided with winding groove one (2) and winding groove two (7) on both sides, respectively, the inner wall of winding groove one (2) is wound with fine copper wire (3), the inner wall of winding groove two (7) is wound with thick copper wire (6), the inner wall of winding groove two (7) and located on the outside of thick copper wire (6) is provided with high-thermal-conductivity insulation layer (5), the inner wall of winding groove one (2) and winding groove two (7) and located at the gap between fine copper wire (3) and thick copper wire (6) is filled with paraffin-based phase change filler (4).

2. A flame-out solenoid valve coil according to claim 1, wherein One side of the wire rack (1) is connected with several heat dissipation fins (8), and the heat dissipation fins (8) are located on one side of the thick copper wire (6).

3. A flame-out solenoid valve coil according to claim 1, wherein The outer part of the fine copper wire (3) is wrapped with a silver plating layer (9).

4. A flame-out solenoid valve coil according to claim 1, wherein The center of the top of the wire rack (1) and between the winding groove one (2) and the winding groove two (7) is provided with a notch (12), and the bottom of the inner wall of the notch (12) is provided with a slot (13).

5. A flame arrestor solenoid valve coil according to claim 4 wherein, The inner wall of the slot (13) is inserted with a T-shaped partition plate (11), and the two sides of the T-shaped partition plate (11) are attached with high-temperature-resistant insulation tape (10).

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