One-stop refrigeration equipment solenoid valve coil

Abstract

The utility model provides a one-stop refrigeration equipment solenoid valve coil, including injection moulded coil shell, inside filling seal layer, inside screw seal sleeve and outside secondary seal layer, injection moulded coil shell right end is connected with insulating plastic seat through hot melt adhesive, this design has solved the problem that the existing known solenoid valve coil lead end uses when the moisture is extremely easy to enter solenoid valve coil inside through lead wire interface micro gap, leads to the problem of insulation performance decline, the utility model first adopts inside filling seal layer and can form first dampproof barrier and stress fixed point, secondly adopts middle part mechanical compression seal sleeve and makes two inside filling seal layers to occur elastic deformation in radial and axial, thereby tightly wraps lead wire and fills all interstices of lead wire outlet hole, finally adopts outside secondary seal layer and forms bowl shape cladding body, as the final barrier to extreme environment and water vapor, can realize the efficient insulation sealing of solenoid valve coil lead wire interface.

Description

Technical Field

[0001] This utility model relates to a solenoid valve coil for a one-stop refrigeration equipment, belonging to the field of solenoid valve coil technology. Background Technology

[0002] Solenoid valves are the core actuators in one-stop refrigeration equipment, controlling the on / off state and flow direction of refrigerant. The solenoid valve coil, as the "power source" of the solenoid valve, controls the flow and cut-off of refrigerant by switching on and off electricity. As the core component driving the solenoid valve core, the reliability, stability, and service life of the solenoid valve coil directly affect the operating efficiency and safety of the entire refrigeration system. The lead wires of the solenoid valve coil need to be connected to an external control circuit through a lead wire interface.

[0003] However, in high-temperature and high-humidity refrigeration equipment environments, especially under harsh conditions such as outdoor units or cold storage, moisture can easily seep into the solenoid valve coil through the micro-gap of the lead wire interface, leading to a decrease in insulation performance and causing short circuits or breakdowns. There is an urgent need for a one-stop solenoid valve coil for refrigeration equipment to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a one-stop solenoid valve coil for refrigeration equipment, thereby solving the problems mentioned in the background. This invention firstly uses an internal potting layer to form the first moisture barrier and stress fixing point. Secondly, a central mechanical compression sealing kit is used to cause the two internal potting layers to elastically deform in the radial and axial directions, thereby tightly wrapping the lead wire and filling all the gaps in the lead wire outlet hole. Finally, an external secondary sealing layer is used to form a bowl-shaped enclosure as the final barrier against extreme environments and moisture, achieving efficient insulation and sealing of the solenoid valve coil lead wire interface.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a one-stop refrigeration equipment solenoid valve coil, comprising an injection-molded coil shell, an internal potting layer, an internal thread sealing kit, and an external secondary sealing layer. An insulating plastic base is connected to the right end of the injection-molded coil shell via hot melt adhesive. Two lead wire interfaces are provided at the upper and lower ends of the connection between the insulating plastic base and the right side of the injection-molded coil shell, and coil leads are installed at both lead wire interfaces. The two coil leads are each wrapped with an internal potting layer. A potting seat is fixed between the two internal potting layers. External threads are provided on the right ends of the two internal potting layers. Internal thread sealing kits are fixedly wound around the external threads via threads. Multiple arc-shaped top pieces are fixed at equal angles on the left edges of the two internal thread sealing kits. An inner rubber sheet is adhered to the inner side of each of the multiple arc-shaped top pieces. An external secondary sealing layer covers the two internal potting layers, the two internal thread sealing kits, and the multiple arc-shaped top pieces. A sealing seat is provided between the two external secondary sealing layers.

[0006] Furthermore, the injection-molded coil housing contains a solenoid valve coil, which is mounted outside the solenoid valve rod. The positive and negative terminals of the solenoid valve coil are connected to two coil leads, respectively.

[0007] Furthermore, both of the aforementioned internal thread sealing kits are internal thread compression nuts.

[0008] Furthermore, both of the inner potting layers and the potting seat are made of high thermal conductivity epoxy resin, and the multiple inner rubber sheets abut against the outside of the two inner potting layers.

[0009] Furthermore, both of the aforementioned external secondary sealing layers and sealing seats are made of elastic sealant.

[0010] Furthermore, a rubber frame is adhered to the right end face of the insulating plastic seat.

[0011] The beneficial effects of this utility model are as follows: The one-stop refrigeration equipment solenoid valve coil of this utility model has a reasonable structure due to the addition of an insulating plastic base, an internal potting layer, a potting seat, an external thread, an internal thread sealing kit, an arc-shaped top plate, an inner rubber sheet, an external secondary sealing layer, and a sealing seat. First, the internal potting layer can form the first moisture barrier and stress fixing point. Second, the central mechanical compression sealing kit causes the two internal potting layers to undergo elastic deformation in the radial and axial directions, thereby tightly wrapping the lead wire and filling all the gaps in the lead wire outlet hole. Finally, the external secondary sealing layer forms a bowl-shaped covering body as the final barrier against extreme environments and moisture. It can achieve efficient insulation and sealing of the solenoid valve coil lead wire interface and has strong practicality. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the structure of the solenoid valve coil in the one-stop refrigeration equipment of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal potting layer structure of the solenoid valve coil in the one-stop refrigeration equipment of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal thread sealing kit structure of the solenoid valve coil in the one-stop refrigeration equipment of this utility model.

[0016] Figure 4 This is a schematic diagram of the external secondary sealing layer structure of the solenoid valve coil of the one-stop refrigeration equipment of this utility model.

[0017] In the diagram: 1-Injection-molded coil shell, 2-Insulating plastic base, 3-Rubber frame, 4-Coil lead, 5-Internal potting layer, 6-Potting base, 7-External thread, 8-Internal thread sealing kit, 9-Arched top plate, 10-Inner rubber sheet, 11-External secondary sealing layer, 12-Sealing base, 13-Solenoid valve stem. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] Please see Figures 1-4 This utility model provides a technical solution: a solenoid valve coil for a one-stop refrigeration equipment, including an injection-molded coil shell 1, an inner potting layer 5, an inner thread sealing kit 8, and an outer secondary sealing layer 11. An insulating plastic base 2 is connected to the right end of the injection-molded coil shell 1 via hot melt adhesive. Two lead wire interfaces are provided at the upper and lower ends of the connection between the insulating plastic base 2 and the right side of the injection-molded coil shell 1, and coil leads 4 are installed at both lead wire interfaces. The two coil leads 4 are each wrapped with an inner potting layer 5. A potting seat 6 is fixed between the two inner potting layers 5, and external threads are provided at the right end of the outer surface of each of the two inner potting layers 5. 7. Both external threads 7 are fixedly wrapped with internal thread sealing kits 8. Multiple arc-shaped top pieces 9 are fixed at equal angles on the left edge of the two internal thread sealing kits 8. The inner side of the multiple arc-shaped top pieces 9 is glued with an inner rubber sheet 10. The two internal potting layers 5, the two internal thread sealing kits 8 and the multiple arc-shaped top pieces 9 are all covered with an external secondary sealing layer 11. A sealing seat 12 is provided between the two external secondary sealing layers 11. This design solves the problem that moisture can easily seep into the inside of the solenoid valve coil through the micro gap of the lead interface when the lead end of the existing solenoid valve coil is used, resulting in a decrease in insulation performance.

[0020] As the first embodiment of this utility model: the injection-molded coil housing 1 houses a solenoid valve coil, which is mounted outside the solenoid valve rod 13. The positive and negative ends of the solenoid valve coil are connected to two coil leads 4, respectively. Both internal thread sealing kits 8 are internal thread compression nuts. Both internal potting layers 5 and potting seats 6 are made of high thermal conductivity epoxy resin. Multiple inner rubber sheets 10 abut against the outside of the two internal potting layers 5. By adding the two internal thread sealing kits 8, multiple arc-shaped top pieces 9 and multiple inner rubber sheets 10 can be rotated to the left and pressed tightly against the two internal potting layers 5, forcing them to undergo elastic deformation, thereby tightly wrapping the two coil leads 4 and filling all the gaps at the lead outlet holes. Both external secondary sealing layers 11 and sealing seats 12 are made of elastic sealant. By adding the two external secondary sealing layers 11, which are made of elastic sealant, they form a bowl-shaped covering, serving as the final barrier against extreme environments and moisture. An integral rubber frame 3 is attached to the right end face of the insulating plastic base 2. When the external plug is connected to the insulating plastic base 2, the rubber frame 3 can serve as a buffer filling component to fill the gap at the connection.

[0021] As a second embodiment of this utility model: both internal potting layers 5 and potting base 6 are made of high thermal conductivity epoxy resin, which can fill the outside of the two coil leads 4, completely covering and curing the internal sections of the two coil leads 4, the connection points with the enameled wire, and the coil skeleton, forming the first moisture barrier and stress fixing point; the overall installation steps are as follows: weld the two coil leads 4 to the enameled wire inside the coil, pour high thermal conductivity epoxy resin into the insulating plastic base 2 until the two internal potting layers 5 completely cover the left ends of the two coil leads 4, and the potting base 6 is attached to the left end of the insulating plastic base 2. Then, cure the epoxy resin at room temperature or by heating to form a solid internal potting layer 5. This step completely seals the internal structure and provides the first seal. After the internal potting layer 5 has cured, Two internal thread sealing kits 8 pass through the two coil leads 4 and are screwed onto the outside of the two internal potting layers 5, forcing multiple inner rubber sheets 10 to abut against the outside of the two internal potting layers 5. This forces the two internal potting layers 5 to expand radially, tightly holding the two coil leads 4 and filling the tiny gaps between them. At the same time, they deform axially, forming a great contact pressure with the inner wall of the lead outlet hole, achieving a highly reliable second seal. Elastic sealant (such as silicone sealant) is evenly applied to the two internal potting layers 5, the two internal thread sealing kits 8, and multiple arc-shaped top pieces 9, so that the sealant forms a smooth, bowl-shaped or rounded outer secondary sealing layer 11 and a sealing seat 12 that covers all possible water seepage paths. After the sealant cures, the moisture-proof sealing treatment of the interface of the two coil leads 4 is completed.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. One-stop refrigeration equipment solenoid valve coil, comprising an injection molded coil housing (1), an internal potting layer (5), an inner screw seal sleeve assembly (8) and an external secondary seal layer (11), characterized in that: The right end of the injection-molded coil housing (1) is connected to an insulating plastic base (2) by hot melt adhesive. Two lead wire interfaces are opened through the upper and lower ends of the connection between the insulating plastic base (2) and the right side of the injection-molded coil housing (1), and coil leads (4) are installed at both lead wire interfaces. The two coil leads (4) are wrapped with an internal potting layer (5). A potting seat (6) is fixed between the two internal potting layers (5). The right end of the two internal potting layers (5) is provided with an external thread (7). An internal thread sealing kit (8) is fixed around the two external threads (7) by the thread. Multiple arc-shaped top pieces (9) are fixed at equal angles on the left edge of the two internal thread sealing kits (8). An inner rubber sheet (10) is glued to the inside of the multiple arc-shaped top pieces (9). The two internal potting layers (5), the two internal thread sealing kits (8) and the multiple arc-shaped top pieces (9) are covered with an external secondary sealing layer (11). A sealing seat (12) is provided between the two external secondary sealing layers (11).

2. The one-stop refrigeration appliance solenoid valve coil of claim 1, wherein: The injection-molded coil housing (1) has a built-in solenoid valve coil, and the solenoid valve coil is installed outside the solenoid valve rod (13). The positive and negative ends of the solenoid valve coil are respectively connected to two coil leads (4).

3. The one-stop refrigeration appliance solenoid valve coil of claim 1, wherein: Both of the internal thread sealing kits (8) are internal thread compression nuts.

4. The one-stop refrigeration appliance solenoid valve coil of claim 1, wherein: Both inner potting layers (5) and potting base (6) are made of high thermal conductivity epoxy resin, and multiple inner rubber sheets (10) abut against the outside of the two inner potting layers (5).

5. The one-stop refrigeration appliance solenoid valve coil of claim 1, wherein: Both of the external secondary sealing layers (11) and the sealing seat (12) are elastic sealant.

6. The one-stop refrigeration appliance solenoid valve coil of claim 1, wherein: The right end face of the insulating plastic base (2) is glued with a rubber frame (3).

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