Electromagnetic valve assembly of gas appliance

Abstract

The utility model discloses a gas appliance solenoid valve assembly, which comprises a guide sleeve, the guide sleeve is used for being detachably connected with a protective sleeve on a thermocouple, the guide sleeve comprises an outer sleeve body and an inner sleeve body which are coaxially arranged, and a connecting part for connecting the outer sleeve body and the inner sleeve body into a whole, and the inner sleeve body is used for being connected and matched with a plug bush terminal on the thermocouple. The utility model provides an electromagnetic valve assembly of a gas appliance, which can effectively solve the problem of deflection of a plug bush terminal of an airplane caused by a terminal gap, simplify the installation process, improve the assembly installation efficiency and ensure that the stability and reliability of a system are obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, and more specifically to an electromagnetic valve assembly for a gas appliance. Background Art

[0002] In the stove solenoid valve system, thermocouples play a key role. Thermocouples are sensors used to measure temperature, usually composed of two wires of different metals. When the two metals are connected to form a loop, they generate a small voltage that changes with the temperature, thereby achieving temperature measurement.

[0003] On the other hand, the solenoid valve, as a device for controlling the flow of gas, plays a vital role in gas cookers. The solenoid valve is usually composed of a coil and a valve core. The coil is activated by applying current, thereby controlling the opening and closing of the valve core to regulate the flow of gas.

[0004] Combination Figure 1 As shown in the figure, the existing terminals have a certain gap during installation, which causes the aircraft plug-in terminal to swing with the movement of the wire, resulting in non-centering, which may affect the installation of the thermocouple and the solenoid valve. The operator needs to find the correct position before inserting it into place. If the operator is not familiar with the installation method of the product, he will force the insertion, which will expand the aircraft plug-in terminal socket and increase the contact resistance, resulting in poor suction, which will affect the flow of gas and the normal operation of the extinguishing function. Summary of the invention

[0005] The utility model aims to solve one of the technical problems in the related technology to a certain extent. To this end, the utility model proposes a gas appliance solenoid valve assembly, which can effectively solve the problem of aircraft socket terminal deflection caused by terminal gap, simplify the installation process, improve the assembly installation efficiency and ensure a significant improvement in system stability and reliability.

[0006] The technical solution adopted by the utility model is: to provide a gas appliance solenoid valve assembly, including a guide sleeve, the guide sleeve is used to be detachably connected to a protective sleeve on a thermocouple, the guide sleeve includes an outer sleeve body and an inner sleeve body coaxially arranged, and a connecting portion connecting the outer sleeve body and the inner sleeve body as one, and the inner sleeve body is used to be connected and matched with a socket terminal on the thermocouple.

[0007] The above structure can effectively solve the problem of aircraft socket terminal deflection caused by terminal gap. The operator does not need to find the position too much during installation, just connect the guide sleeve to the protective sleeve on the thermocouple. The socket terminal is aligned with the inner sleeve, and the socket shrinks under the restriction of the inner sleeve, which simplifies the installation process of the socket terminal. It not only improves the installation efficiency of the gas appliance solenoid valve assembly, but also ensures the accuracy of the matching installation of the thermocouple and the solenoid valve, avoids the problem of increased contact resistance caused by the expansion of the socket, and thus ensures the normal operation of the gas flow and extinguishing function. This design has brought significant improvement to the stability and reliability of the gas appliance solenoid valve system.

[0008] According to one embodiment of the utility model, a conical chamfer is provided at an opening of one end of the inner sleeve body facing the thermocouple. By setting the conical chamfer, the conical chamfer can guide the insertion of the plug terminal, reduce the deformation of the plug terminal opening, ensure that the plug terminal can be accurately guided during insertion, and reduce instability during connection.

[0009] According to an embodiment of the utility model, the guide sleeve is provided with a plug terminal, and the protective sleeve is provided with a socket terminal that is plugged and matched with the plug terminal.

[0010] According to an embodiment of the utility model, the plug terminal and the inner sleeve body are interference fit.

[0011] According to one embodiment of the utility model, the ratio of the axial length H1 of the inner sleeve body to the axial length H2 of the tapered chamfer is 4:1~4:3; compared with the prior art, the tapered chamfer in the present application is axially extended compared with the chamfer in the prior art, that is, the axial length of the tapered tool holder is increased, and the deformation of the opening of the plug terminal is reduced.

[0012] According to an embodiment of the present invention, the ratio of the axial length H1 of the inner sleeve to the axial length H2 of the conical chamfer is 2:1.

[0013] According to an embodiment of the utility model, the connecting portion is arranged at an end of the guide sleeve away from the thermocouple.

[0014] According to an embodiment of the utility model, the guide sleeve and / or the protective sleeve are / is integrally formed by injection molding.

[0015] According to an embodiment of the utility model, the guide sleeve is provided with an elastic clamping block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the connection between the plug terminal and the socket terminal in the prior art;

[0018] Figure 2 A three-dimensional diagram of a solenoid valve in an embodiment of the utility model;

[0019] Figure 3 A cross-sectional view of a solenoid valve in an embodiment of the utility model;

[0020] Figure 4 A three-dimensional diagram of a guide sleeve in an embodiment of the utility model;

[0021] Figure 5 A half-section view of the guide sleeve in the embodiment of the utility model;

[0022] Figure 6 A half-section stereoscopic view of a guide sleeve in an embodiment of the utility model;

[0023] Figure 7 A cross-sectional view of a guide sleeve in an embodiment of the utility model;

[0024] Figure 8 A three-dimensional diagram of a thermocouple in an embodiment of the utility model;

[0025] Fig. 9 It is a partial cross-sectional view of the connection structure between the thermocouple and the guide sleeve in the embodiment of the utility model.

[0026] Description of the numbers in the figure:

[0027] 1. Guide sleeve; 2. Flange; 3. Valve seat; 4. Valve cover; 5. Static iron core; 6. Coil; 7. Plug terminal; 8. Moving iron core; 9. Valve shaft; 10. Spring; 11. O-type rubber ring; 12. Thermocouple; 13. Protective sleeve; 14. Plug terminal;

[0028] 1a, outer sleeve; 1b, connecting part; 1c, inner sleeve; 1d, elastic block; 1e, conical chamfer. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. Embodiment 1

[0030] like Figure 1-8 As shown, in this embodiment, a gas appliance solenoid valve assembly is disclosed, including a guide sleeve 1, wherein the guide sleeve 1 is used to be detachably connected to a protective sleeve 13 on a thermocouple 12, the guide sleeve 1 includes an outer sleeve body 1a and an inner sleeve body 1c which are coaxially arranged, and a connecting portion 1b which connects the outer sleeve body 1a and the inner sleeve body 1c as one, the connecting portion 1b is arranged at one end of the guide sleeve 1 away from the thermocouple 12, the inner sleeve body 1c is used to be connected and cooperated with a plug terminal 14 on the thermocouple 12, and a conical chamfer 1e is provided at one end of the inner sleeve body 1c which faces the thermocouple 12.

[0031] Furthermore, combined with Figure 2 As shown, in this embodiment, the solenoid valve assembly includes two major parts, namely, a solenoid valve and a thermocouple 12, wherein the solenoid valve includes a guide sleeve 1, a flange 2, a valve seat 3, a valve cover 4, a static iron core 5, a moving iron core 8 and a valve shaft 9, wherein the guide sleeve 1 is mounted on the flange 2, and the two ends of the valve seat 3 are respectively connected to the valve cover 4 and the flange 2. The valve seat 3 and the valve cover 4 are combined to form a closed space, and the static iron core 5 and the moving iron core 8 are both fixedly mounted in the closed space. The valve cover 4 is slidably mounted with a valve shaft 9 at one end away from the valve seat 3, one end of the valve shaft 9 extends into the closed space and is connected to the moving iron core 8, and the other end extends out of the valve cover 4 and is connected to a limit pin (not shown in the figure). A spring 10 is sleeved on the outer periphery of the valve cover 4, and the spring 10 is coaxially arranged with the valve shaft 9 and is located on the outside of the valve shaft 9. One end of the spring 10 abuts against the valve cover 4, and the other end abuts against the limit pin, and the spring 10 has an elastic tendency to keep the moving iron core 8 in close contact with the inner wall of the valve cover 4.

[0032] Furthermore, a plug terminal 7 and a static iron core 5 are installed inside the valve seat 3, and an O-type rubber ring 11 is sleeved on the outer periphery of the valve seat 3. When the solenoid valve is installed at a predetermined position through the flange 2, the O-type rubber ring 11 forms a seal with the predetermined position. A coil 6 is wound around the outer periphery of the static iron core 5, and the end of the coil 6 is connected to the inside of the plug terminal 7 and is encapsulated by a welding process. The plug terminal 7 passes through the inner sleeve body 1c of the guide sleeve 1 and extends out of the inner sleeve body 1c. When the protective sleeve 13 is plugged into the guide sleeve 1, the elastic block 1d on the guide sleeve 1 firmly clamps the protective sleeve 13, and the plug sleeve terminal 14 inside the protective sleeve 13 is tightly matched with the plug terminal 7.

[0033] Furthermore, in this embodiment, the thermocouple 12 extends into the combustion position of the cooker, and the thermocouple 12 generates a millivolt voltage when heated, and the voltage changes with the temperature. When the flame at the combustion position is accidentally extinguished, the voltage generated by the thermocouple 12 disappears, and the coil 6 and the static iron core 5 are combined to form an electromagnetic coil 6 to absorb the moving iron core 8. The moving iron core 8 drives the valve shaft 9 to move and close the gas path, thereby achieving the purpose of protection.

[0034] Specifically, the ratio of the axial length H1 of the inner sleeve body 1c to the axial length H2 of the tapered chamfer 1e is 4:1-4:3. In the present embodiment, the ratio of the axial length H1 of the inner sleeve body 1c to the axial length H2 of the tapered chamfer 1e is preferably 2:1.

[0035] Specifically, combined Figure 8 As shown, the guide sleeve 1 is provided with a plug terminal 7, and the protective sleeve 13 is provided with a socket terminal 14 plug-matched with the plug terminal 7. The guide sleeve 1 and the protective sleeve 13 are integrally formed by injection molding.

[0036] Furthermore, combined with Figure 7 As shown, the thermocouple 12 is connected to the socket terminal 14 via a wire.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A solenoid valve assembly for a gas appliance, characterized in that: The invention comprises a guide sleeve, which is used to be detachably connected to the protective sleeve on the thermocouple. The guide sleeve comprises an outer sleeve body and an inner sleeve body which are coaxially arranged, and a connecting part which connects the outer sleeve body and the inner sleeve body as one. The inner sleeve body is used to be connected and matched with the plug-in terminal on the thermocouple.

2. A gas appliance solenoid valve assembly according to claim 1, characterized in that: The inner sleeve body is opened at one end facing the thermocouple and is provided with a conical chamfer.

3. A gas appliance solenoid valve assembly according to claim 1, characterized in that: The guide sleeve is provided with a plug terminal, and the protective sleeve is provided with a socket terminal which is plugged and matched with the plug terminal.

4. A gas appliance solenoid valve assembly according to claim 1, characterized in that: The plug-in terminal is interference-fitted with the inner sleeve body.

5. The solenoid valve assembly for a gas appliance according to claim 2, characterized in that: The ratio of the axial length H1 of the inner sleeve to the axial length H2 of the tapered chamfer is 4:1-4:

3.

6. A gas appliance solenoid valve assembly according to claim 5, characterized in that: The ratio of the axial length H1 of the inner sleeve to the axial length H2 of the conical chamfer is 2:

1.

7. The solenoid valve assembly for a gas appliance according to claim 1, characterized in that: The connecting portion is arranged at an end of the guide sleeve away from the thermocouple.

8. The solenoid valve assembly for a gas appliance according to claim 1, characterized in that: The guide sleeve and / or the protective sleeve are integrally formed by injection molding.

9. The solenoid valve assembly for a gas appliance according to claim 1, characterized in that: The guide sleeve is provided with an elastic clamping block.

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