Electromagnetic valve and gas equipment

Abstract

The utility model discloses an electromagnetic valve and gas equipment, and relates to the technical field of electromagnetic valves. Wherein the electromagnetic valve comprises a winding framework, a guide pipe, a movable iron core and a magnetic conductive sleeve, the winding framework comprises a winding reel, and a coil is arranged outside the winding reel; the guide pipe is arranged in the winding reel; the movable iron core is movably arranged in the guide tube and is used for axially moving under the action of the coil; the magnetic conductive sleeve is arranged outside the guide pipe in a sleeving manner and is positioned in the winding reel; the magnetic conductive sleeve partially covers the guide pipe, a gap is formed between the part, not provided with the magnetic conductive sleeve, of the guide pipe and the winding reel, and the winding reel is concavely arranged towards the gap to form a concave part so as to enlarge the winding space outside the winding reel. According to the technical scheme, under the condition that the overall size of the electromagnetic valve is not changed, electromagnetic force is increased, and the control accuracy of the electromagnetic valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, in particular to a solenoid valve and gas equipment. Background Art

[0002] Solenoid valves are widely used in gas equipment. The number of turns of the coil inside the solenoid valve is one of the important factors affecting the electromagnetic force of the solenoid valve.

[0003] In the related art, the electromagnetic force of the solenoid valve is increased by increasing the number of turns of the coil, but this will lead to the problem of increasing the overall volume of the solenoid valve. Utility Model Content

[0004] The main purpose of the utility model is to provide a solenoid valve, which aims to increase the electromagnetic force of the solenoid valve without changing the overall volume of the solenoid valve.

[0005] To achieve the above-mentioned purpose, the solenoid valve proposed in the present invention comprises:

[0006] The winding frame comprises a winding drum, and a coil is arranged outside the winding drum;

[0007] a guide tube, disposed in the winding drum;

[0008] a moving iron core, movably disposed in the guide tube and configured to move axially under the action of the coil; and

[0009] A magnetic conductive sleeve is sleeved outside the guide tube and located inside the winding drum; the magnetic conductive sleeve partially covers the guide tube, and a gap is formed between the portion of the guide tube where the magnetic conductive sleeve is not provided and the winding drum, and the winding drum is recessed toward the gap to increase the winding space outside the winding drum.

[0010] In one embodiment of the present application, the recessed portion abuts against the guide tube.

[0011] In one embodiment of the present application, two magnetic conductive sleeves are included, and the two magnetic conductive sleeves are axially spaced apart and arranged at both ends of the winding reel;

[0012] The recessed portion is located between the two magnetic conductive sleeves, and the axial ends of the recessed portion are respectively in contact with the ends of the two magnetic conductive sleeves.

[0013] In one embodiment of the present application, the recessed portion is arranged in a ring shape around the circumference of the guide tube.

[0014] In one embodiment of the present application, the solenoid valve further includes a bracket, the bracket including a first mounting plate and a second mounting plate respectively provided at opposite ends of the winding skeleton, the first mounting plate being connected and fixed to the second mounting plate via a connecting side plate;

[0015] The winding skeleton further includes a first skeleton annular platform portion and a second skeleton annular platform portion provided at both ends of the winding drum and extending radially, the first skeleton annular platform portion being connected to the first mounting plate, and the second skeleton annular platform portion being connected to the second mounting plate;

[0016] The end of the magnetic conductive sleeve is provided with a magnetic conductive ring plate extending in the radial direction. The magnetic conductive ring plate is arranged between the corresponding first skeleton ring platform and the first mounting plate, or between the second skeleton ring platform and the second mounting plate.

[0017] In one embodiment of the present application, the connecting side plate and the first mounting plate are an integrally formed structure;

[0018] The second mounting plate is provided with a clamping hole, and an end of the connecting side plate facing away from the first mounting plate is clamped in the clamping hole.

[0019] In one embodiment of the present application, the thickness of the first mounting plate is between 0.8 mm and 1.5 mm;

[0020] and / or, the thickness of the connecting side plate is between 0.8 mm and 1.5 mm;

[0021] And / or, the thickness of the second mounting plate is between 0.8 mm and 1.5 mm.

[0022] In one embodiment of the present application, the first mounting plate is provided with a first through hole, and the guide tube is mounted in the first through hole and axially extends out of the first mounting plate;

[0023] The solenoid valve further comprises:

[0024] a sealing ring, sleeved on the guide tube and abutting against the end surface of the first mounting plate facing away from the second mounting plate; and

[0025] The sealing plate is sleeved on the guide tube and connected to the end surface of the first mounting plate facing away from the second mounting plate; the sealing ring is clamped between the sealing plate and the first mounting plate.

[0026] In one embodiment of the present application, the solenoid valve further includes:

[0027] a static iron core, fixedly disposed in the guide tube and fixedly connected to the second mounting plate;

[0028] a blocking block mounted on an end of the moving iron core facing away from the static iron core; and

[0029] An elastic member connects the sealing plate and the blocking block.

[0030] To achieve the above objectives, the present application also provides a gas device, including the above-mentioned solenoid valve.

[0031] In the solenoid valve of the present invention, a coil is wound around the exterior of a bobbin, a guide tube is located within the bobbin, and a movable iron core is movably disposed within the guide tube, configured to move axially under the action of the coil to achieve the valve opening and closing function of the solenoid valve. A magnetic conductive sleeve is sleeved on the exterior of the guide tube, creating a gap between the bobbin and the guide tube. The bobbin is recessed into the gap to form a recessed portion. Compared to the related art method of using a straight cylindrical bobbin, the recessed portion of this embodiment increases the winding space outside the bobbin, thereby increasing the number of coil turns without changing the original outer diameter of the coil. This increases the electromagnetic force and improves the control accuracy of the solenoid valve without changing the overall volume of the solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0033] Figure 1 This is a structural diagram of an embodiment of the solenoid valve of the utility model;

[0034] Figure 2 This is a front view of an embodiment of the solenoid valve of the present utility model;

[0035] Figure 3 for Figure 2 Cross-sectional view at MM.

[0036] Description of Figure Numbers:

[0037]

[0038]

[0039] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0042] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or an option in which both A and B are satisfied.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] In the solenoid valve of the related art, the winding drum of the winding frame is usually cylindrical. When the number of winding turns of the coil is increased to increase the electromagnetic force, the overall diameter of the coil will increase, which will lead to the problem of increasing the overall volume of the solenoid valve.

[0045] To this end, the present invention proposes a solenoid valve, which aims to increase the electromagnetic force and improve the control accuracy of the solenoid valve without changing the overall volume size of the solenoid valve.

[0046] In the embodiment of the present utility model, Figures 1 to 3As shown, the solenoid valve includes a winding bobbin 1, a guide tube 3, a movable iron core 7, and a magnetic conductive sleeve 4. The winding bobbin 1 includes a bobbin 11, with a coil 2 mounted outside the bobbin 11. The guide tube 3 is disposed within the bobbin 11. The movable iron core 7 is movably disposed within the guide tube 3, configured to move axially under the action of the coil 2. The magnetic conductive sleeve 4 is sleeved outside the guide tube 3 and located within the bobbin 11. The magnetic conductive sleeve 4 partially covers the guide tube 3, leaving a gap between the bobbin 11 and the guide tube 3. The bobbin 11 is concave toward the gap to form a recessed portion 111, thereby increasing the winding space outside the bobbin 11.

[0047] The winding bobbin 1 provides a stable support structure for the coil 2, so that the coil 2 maintains its shape during winding and use, and prevents the coil 2 from becoming scattered or deformed. It can be understood that the winding bobbin 1 includes a bobbin 11, which is an annular structure with both ends open in the axial direction. The outside of the bobbin 11 is formed into a winding space for the coil 2 to be wound. Specifically, the coil 2 is wound along the outer circumference of the bobbin 11; the inside of the bobbin 11 is formed into an installation space for other components of the solenoid valve, such as the guide tube 3, the moving iron core 7, the static iron core 8, and the magnetic sleeve 4. Optionally, an insulating layer can be provided on the winding bobbin 1 to ensure that the coil 2 is insulated from the winding bobbin 1, to prevent short circuits and current leakage, and thus to improve the safety and reliability of the solenoid valve.

[0048] The guide tube 3 is disposed within the winding bobbin 11, and the movable iron core 7 is movably disposed within the guide tube 3 for axial movement under the action of the coil 2. It will be understood that the guide tube 3 serves to guide the movable iron core 7 during movement. The movable iron core 7 is located inside the coil 2. When the coil 2 is energized, the magnetic field generated can drive the movable iron core 7 to move axially along the guide tube 3, thereby achieving the valve opening and closing function of the solenoid valve.

[0049] The magnetic sleeve 4 is sleeved on the outside of the guide tube 3 and located inside the winding drum 11, that is, the magnetic sleeve 4 is located between the guide tube 3 and the winding drum 11, which can guide and concentrate the magnetic field generated by the coil 2, making the magnetic field distribution more uniform, and at the same time can enhance the magnetic field, so that the moving iron core 7 can move more reliably and quickly.

[0050] The magnetic sleeve 4 partially covers the guide tube 3, which will cause a gap between the winding drum 11 and the guide tube 3. In this embodiment, a recessed portion 111 is formed inwardly at the position of the winding drum 11 corresponding to the gap. Compared with the straight cylinder method of the winding drum 11 in the related art, the recessed portion 111 of this embodiment increases the winding space outside the winding drum 11, thereby increasing the space for winding the coil 2 without changing the original overall external diameter of the coil 2, thereby increasing the number of turns of the coil 2 and improving the electromagnetic force. Therefore, it is achieved that the electromagnetic force is increased without changing the overall volume size of the solenoid valve, thereby improving the control accuracy of the solenoid valve.

[0051] It should be noted that the specific position of the recessed portion 111 of the winding drum 11 can be determined according to the actual gap situation. For example, when the magnetic sleeve 4 is located in the upper area of ​​the guide tube 3, the gap between the winding drum 11 and the guide tube 3 may be in the middle or lower area, and the recessed portion 111 can be correspondingly set at the middle position or lower position of the winding drum 11; when the magnetic sleeve 4 is located in the lower area of ​​the guide tube 3, the gap between the winding drum 11 and the guide tube 3 may be in the middle or upper area, and the recessed portion 111 can be correspondingly set. It is placed in the middle or upper position of the winding drum 11; or, when the magnetic sleeve 4 is located in the middle area of ​​the guide tube 3, the gap between the winding drum 11 and the guide tube 3 may be in the upper or lower area, and the recessed portion 111 can be correspondingly set at the upper position or lower position of the winding drum 11; or, when the magnetic sleeve 4 is located in the upper and lower areas of the guide tube 3 at the same time, the gap between the winding drum 11 and the guide tube 3 may be in the middle area, and the recessed portion 111 can be correspondingly set at the middle position of the winding drum 11, and so on.

[0052] It should be noted that the specific shape and structure of the recessed portion 111 can be determined according to actual conditions, for example, it can be circular, rectangular, triangular or some other shapes.

[0053] In summary, in the solenoid valve of the present invention, the coil 2 is wound on the outside of the bobbin 11, the guide tube 3 is located inside the bobbin 11, and the moving iron core 7 is movably disposed within the guide tube 3 for axial movement under the action of the coil 2 to realize the valve opening and closing function of the solenoid valve. The outer portion of the guide tube 3 is sleeved with a magnetic conductive sleeve 4, so that there is a gap between the bobbin 11 and the guide tube 3. The bobbin 11 is recessed into the gap to form a recessed portion 111. Compared to the related art in which the bobbin 11 is a straight cylinder, the recessed portion 111 of this embodiment increases the winding space outside the bobbin 11, thereby increasing the number of turns of the coil 2 without changing the original outer diameter of the coil 2. As a result, the electromagnetic force is increased without changing the overall volume of the solenoid valve, thereby improving the control accuracy of the solenoid valve.

[0054] In one embodiment of the present application, the recessed portion 111 abuts against the guide tube 3 .

[0055] In this embodiment, by recessing the recessed portion 111 until it abuts against the guide tube 3, the winding space outside the winding drum 11 is further increased, so that the number of turns of the coil 2 is increased, the magnetic field strength is enhanced, and at the same time, the response speed and sensitivity of the solenoid valve can be improved.

[0056] Furthermore, the solenoid valve includes two magnetic conductive sleeves 4 , which are axially spaced apart at both ends of the winding reel 11 ; and the recessed portion 111 is located between the two magnetic conductive sleeves 4 .

[0057] In this embodiment, two magnetic sleeves 4 are provided, and the two magnetic sleeves 4 are axially spaced apart at the two ends of the winding drum 11. When the coil 2 is energized to generate a magnetic field, the two magnetic sleeves 4 can respectively attract the magnetic fields at the two ends of the coil 2 and prevent the magnetic field from diverging outward, so that the magnetic field can be concentrated toward the middle and distributed more evenly, thereby avoiding the unstable operation of the moving iron core 7 due to uneven distribution of the magnetic field, and improving the working reliability of the solenoid valve.

[0058] On this basis, the recessed portion 111 of the winding drum 11 is located between the two magnetic conductive sleeves 4, which can increase the winding space outside the winding drum 11 and improve the utilization rate of the winding space. At the same time, more coils 2 are arranged in the corresponding areas of the recessed portion 111, so that the magnetic field is more concentrated near the recessed portion 111, which is beneficial to the magnetic force transmission of the solenoid valve.

[0059] Furthermore, the axial ends of the recessed portion 111 respectively abut against the ends of the two magnetic conductive sleeves 4. This design allows the shape of the recessed portion 111 to match the shape of the two magnetic conductive sleeves 4 and the guide tube 3, thereby increasing the volume of the recessed portion 111, further improving space utilization, and increasing the winding space.

[0060] In one embodiment of the present application, the recessed portion 111 is provided in an annular shape around the circumference of the guide tube 3. This design allows the recessed portion 111 to have a consistent shape throughout the entire circumference, allowing the wires to be arranged more neatly during the winding process, reducing entanglement and interlacing between the wires, thereby improving winding efficiency.

[0061] In one embodiment of the present application, Figures 1 to 3 The solenoid valve also includes a bracket 5, which includes a first mounting plate 51 and a second mounting plate 52 respectively arranged at opposite ends of the winding skeleton 1, and the first mounting plate 51 is connected and fixed to the second mounting plate 52 through a connecting side plate 53.

[0062] In this embodiment, the bracket 5 serves to support and mount the winding bobbin 1. The bracket 5 includes a first mounting plate 51, a second mounting plate 52, and a connecting side plate 53. The first mounting plate 51 and the second mounting plate 52 are arranged parallel to each other at the axial ends of the winding bobbin 1. The connecting side plate 53 connects and secures the first mounting plate 51 and the second mounting plate 52, thereby securing the winding bobbin 1. Optionally, the bracket 5 can be made of a magnetically conductive metal member to ensure structural strength while further enhancing magnetic properties.

[0063] Specifically, the winding skeleton 1 also includes a first skeleton annular platform 12 and a second skeleton annular platform 13 provided at both ends of the winding drum 11 and extending radially. The first skeleton annular platform 12 is connected to the first mounting plate 51, and the second skeleton annular platform 13 is connected to the second mounting plate 52.

[0064] It can be understood that the first skeleton annular platform portion 12, the second skeleton annular platform portion 13, and the bobbin 11 are connected to form a winding space for winding the coil 2, wherein the coil 2 is wound around the outer periphery of the bobbin 11, and the first skeleton annular platform portion 12 and the second skeleton annular platform portion 13 are respectively arranged at the axial ends of the coil 2 to limit the axial ends of the coil 2. Optionally, a coil protection cover is further provided on the outer periphery of the coil 2, and the coil protection cover can be connected to at least one of the first skeleton annular platform portion 12 and the second skeleton annular platform portion 13 to limit the outer periphery of the coil 2.

[0065] Optionally, the first frame annular platform 12, the second frame annular platform 13, and the winding drum 11 can be an integrally formed structure or a separate structure. The winding drum 11 is fixed by connecting the first frame annular platform 12 to the first mounting plate 51 and the second frame annular platform 13 to the second mounting plate 52.

[0066] Furthermore, if Figures 1 to 3 The end of the magnetic conductive sleeve 4 is provided with a radially extending magnetic conductive ring plate 41, and the magnetic conductive ring plate 41 is arranged between the corresponding first skeleton ring platform 12 and the first mounting plate 51, or between the second skeleton ring platform 12 and the second mounting plate 52.

[0067] In this embodiment, a magnetic ring plate 41 extending radially is provided at the end of the magnetic sleeve 4, and the magnetic ring plate 41 is located between the corresponding skeleton ring platform and the corresponding mounting plate, so that the magnetic ring plate 41 can be in contact and connected with the corresponding mounting plate, thereby ensuring that there are no magnetic breakpoints and preventing the magnetic interruption from causing unstable movement of the moving iron core 7.

[0068] In addition, the magnetic conductive ring plate 41 is located between the corresponding skeleton ring platform portion and the corresponding mounting plate, and can also play a certain sealing role.

[0069] As an example, the solenoid valve has two magnetic sleeves 4, the magnetic ring plate 41 of one magnetic sleeve 4 is arranged between the first skeleton ring platform 12 and the first mounting plate 51, and the magnetic ring plate 41 of the other magnetic sleeve 4 is arranged between the second skeleton ring platform 12 and the second mounting plate 52.

[0070] Optionally, the magnetic conductive sleeve 4 and the magnetic conductive ring plate 41 are an integrally formed structure.

[0071] In one embodiment of the present application, Figures 1 to 3 The connecting side plate 53 and the first mounting plate 51 are an integrally formed structure; the second mounting plate 52 is provided with a clamping hole 512, and the end of the connecting side plate 53 facing away from the first mounting plate 51 is clamped in the clamping hole 512.

[0072] In this embodiment, the connecting side plate 53 and the first mounting plate 51 are integrally formed, thereby simplifying the forming process and improving production efficiency. Optionally, the connecting side plate 53 and the first mounting plate 51 are integrally formed by bending.

[0073] The second mounting plate 52 is provided with a latching hole 512. In actual use, the connecting side plate 53 is bent from the plane of the first mounting plate 51 toward the second mounting plate 52 and engaged with the latching hole 512 to achieve fixation. It should be noted that the latching hole 512 of this embodiment is a peripherally closed hole structure. Compared with the notched groove structure used in the related art, the latching hole 512 of this embodiment can be locked and limited with the peripheral wall of the connecting side plate 53, thereby improving the connection strength between the connecting side plate 53 and the second mounting plate 52, thereby improving the overall structural reliability of the bracket 5.

[0074] It can be understood from the aforementioned embodiments that the overall structural reliability of the bracket 2 is improved. Therefore, on the basis of ensuring structural reliability, the thickness of the bracket 2 material can be appropriately reduced. This can facilitate the connection between the side panel 53 and the first mounting plate 51, and on the other hand, can reduce material usage and save costs.

[0075] Optionally, the thickness of the first mounting plate 51 is between 0.8 mm and 1.5 mm. This configuration facilitates bending and molding while saving material. Preferably, the thickness of the first mounting plate 51 is 1.2 mm.

[0076] Optionally, the thickness of the connecting side plate 53 is between 0.8 mm and 1.5 mm. This configuration facilitates bending and forming while saving material. Preferably, the thickness of the connecting side plate 53 is 1.2 mm.

[0077] Optionally, the thickness of the second mounting plate 52 is between 0.8 mm and 1.5 mm. This configuration facilitates bending and molding while saving material. Preferably, the thickness of the second mounting plate 52 is 1.2 mm.

[0078] In one embodiment of the present application, Figures 1 to 3 The first mounting plate 51 is provided with a first through hole 511 , and the guide tube 3 is mounted in the first through hole 511 and extends axially out of the first mounting plate 51 .

[0079] This arrangement makes it easier for the movable iron core 7, which cooperates with the guide tube 3, to extend outside the first mounting plate 51 to block or open the controlled opening. Furthermore, the guide tube 3 extends outside the first mounting plate 51, extending the guide limit length of the movable iron core 7, thereby further improving the movement stability of the movable iron core 7.

[0080] The solenoid valve also includes a sealing ring 6 and a sealing plate 54. The sealing ring 6 is sleeved on the guide tube 3 and abuts against the end face of the first mounting plate 51 facing away from the second mounting plate 52; the sealing plate 54 is sleeved on the guide tube 3 and connected to the end face of the first mounting plate 51 facing away from the second mounting plate 52; the sealing ring 6 is clamped between the sealing plate 54 and the first mounting plate 51.

[0081] In this embodiment, the sealing ring 6 is sleeved on the pipe section of the guide tube 3 located outside the first mounting plate 51, and the sealing plate 54 is sleeved on the pipe section of the guide tube 3 located outside the first mounting plate 51, and is connected to the end face of the first mounting plate 51 facing away from the second mounting plate 52, so that the sealing ring 6 is clamped between the sealing plate 54 and the first mounting plate 51 to achieve a sealing effect.

[0082] Compared with the related art method of setting a sealing ring between the magnetic sleeve 4 and the first mounting plate 51, this embodiment can make the first mounting plate 51 contact and fit with the magnetic sleeve 4, ensuring no magnetic breakpoints and improving the movement reliability of the moving iron core 7.

[0083] Optionally, the sealing plate 54 is provided with a convex bump 541 near the guide tube 3. This convex bump 541 serves to mount the extruded sealing ring 6 and simultaneously enables the other parts of the sealing plate 54 to be closely connected to the first mounting plate 51, thereby ensuring the reliability of the connection between the sealing plate 54 and the first mounting plate 51. Optionally, the sealing plate 54 and the first mounting plate 51 can be fixed by bolts. Optionally, the sealing plate 54 can also be made of a magnetically conductive metal member. In this case, the magnetic field from the magnetic sleeve 4, the first mounting plate 51 to the location of the sealing plate 54 can exist continuously, thereby increasing the range of the magnetic field and improving the driving reliability of the moving iron core 7.

[0084] Furthermore, if Figures 1 to 3 The solenoid valve also includes a static iron core 8, a blocking block 71 and an elastic member 9. The static iron core 8 is fixed in the guide tube 3 and fixedly connected to the second mounting plate 52; the blocking block 71 is installed at one end of the moving iron core 7 away from the static iron core 8; the elastic member 9 connects the sealing plate 54 and the blocking block 71.

[0085] In this embodiment, the static iron core 8 serves to enhance the adsorption force on the movable iron core 7. The static iron core 8 is fixedly connected to the second mounting plate 52. Specifically, the second mounting plate 52 is provided with a second through hole 521, and the end of the static iron core 8 facing away from the movable iron core 7 is mounted in the second through hole 521.

[0086] The blocking block 71 is used to block or open the port to be controlled. In order to have a stronger sealing performance when closing, the blocking block 71 can be set as a deformable block, such as a rubber block, a nylon block, etc.

[0087] The elastic member 9 connects the sealing plate 54 and the blocking block 71 to provide elastic force and blocking force for the blocking block 71 to return to the port to be controlled. Optionally, the elastic member 9 is a spring.

[0088] When the coil 2 is energized, the static iron core 8 is magnetic. The magnetic field generated by the coil 2 and the magnetism of the static iron core 8 can attract the moving iron core 7 and compress the elastic part 9 to move in the direction away from the port to be controlled, thereby driving the blocking block 71 to open the port to be controlled; when the coil 2 is de-energized, the magnetism disappears, and the moving iron core 7 can extend toward the port to be controlled under the action of the elastic part 9 to block the port to be controlled.

[0089] The present utility model also proposes a gas device, which includes a solenoid valve. The specific structure of the solenoid valve refers to the above embodiment. Since the gas device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0090] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A solenoid valve, characterized in that: include: The winding frame comprises a winding drum, and a coil is arranged outside the winding drum; a guide tube, disposed in the winding drum; a moving iron core, movably disposed in the guide tube and configured to move axially under the action of the coil; as well as A magnetic conductive sleeve is sleeved outside the guide tube and located inside the winding drum; the magnetic conductive sleeve partially covers the guide tube, and a gap is formed between the portion of the guide tube where the magnetic conductive sleeve is not provided and the winding drum, and the winding drum is recessed toward the gap to increase the winding space outside the winding drum.

2. The solenoid valve according to claim 1, wherein: The recessed portion abuts against the guide tube.

3. The solenoid valve according to claim 2, wherein: The two magnetic conductive sleeves are arranged at two ends of the winding drum at intervals along the axial direction; The recessed portion is located between the two magnetic conductive sleeves, and the axial ends of the recessed portion are respectively in contact with the ends of the two magnetic conductive sleeves.

4. The solenoid valve according to any one of claims 1 to 3, characterized in that The recessed portion is arranged in a ring shape around the periphery of the guide tube.

5. The solenoid valve according to any one of claims 1 to 3, characterized in that: The solenoid valve further includes a bracket, the bracket including a first mounting plate and a second mounting plate respectively provided at opposite ends of the winding frame, the first mounting plate being connected and fixed to the second mounting plate via a connecting side plate; The winding skeleton further includes a first skeleton annular platform portion and a second skeleton annular platform portion provided at both ends of the winding drum and extending radially, the first skeleton annular platform portion being connected to the first mounting plate, and the second skeleton annular platform portion being connected to the second mounting plate; The end of the magnetic conductive sleeve is provided with a magnetic conductive ring plate extending in the radial direction. The magnetic conductive ring plate is arranged between the corresponding first skeleton ring platform and the first mounting plate, or between the second skeleton ring platform and the second mounting plate.

6. The solenoid valve according to claim 5, wherein: The connecting side plate and the first mounting plate are an integrally formed structure; The second mounting plate is provided with a clamping hole, and an end of the connecting side plate facing away from the first mounting plate is clamped in the clamping hole.

7. The solenoid valve according to claim 6, wherein: The thickness of the first mounting plate is between 0.8 mm and 1.5 mm; and / or, the thickness of the connecting side plate is between 0.8 mm and 1.5 mm; And / or, the thickness of the second mounting plate is between 0.8 mm and 1.5 mm.

8. The solenoid valve according to claim 5, wherein: The first mounting plate is provided with a first through hole, and the guide tube is mounted in the first through hole and axially extends out of the first mounting plate; The solenoid valve further comprises: a sealing ring, sleeved on the guide tube and abutting against the end surface of the first mounting plate facing away from the second mounting plate; and The sealing plate is sleeved on the guide tube and connected to the end surface of the first mounting plate facing away from the second mounting plate; the sealing ring is clamped between the sealing plate and the first mounting plate.

9. The solenoid valve according to claim 8, wherein: The solenoid valve further comprises: a static iron core, fixedly disposed in the guide tube and fixedly connected to the second mounting plate; a blocking block mounted on an end of the moving iron core facing away from the static iron core; and An elastic member connects the sealing plate and the blocking block.

10. A gas equipment, characterized in that: Comprising the solenoid valve according to any one of claims 1 to 9.

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