CN219493229U - Double-coil electromagnetic valve - Google Patents

Abstract

The application discloses a double coil solenoid valve belongs to solenoid valve technical field. The double-coil electromagnetic valve comprises a valve seat, a first static iron core, a second static iron core, a primary coil, a secondary coil, a thermocouple and a secondary coil, wherein the two sides of the valve seat of the double-coil electromagnetic valve are respectively provided with the first static iron core and the second static iron core, the primary coil is wound on the first static iron core, the secondary coil is suitable for being connected with the thermocouple, and the secondary coil is suitable for being connected with a pulse generator. The current is generated by the pulse generator and passes through the auxiliary coil, so that the magnetic field generated by the instant current acts on the movable iron core, and the waiting time for the electromagnetic valve to maintain the suction by pressing the air valve knob by hand when the cooker is opened is removed.

Description

Double-coil electromagnetic valve

Technical Field

The application relates to the technical field of electromagnetic valves, in particular to a double-coil electromagnetic valve.

Background

The main function of flameout protection of the gas stove is to avoid the accident of gas leakage under the condition of suddenly flameout when the gas stove is not used or is used by closing the gas channel. The common protection device in life is mainly a single-coil flameout protection device. However, in the traditional single-coil flameout protection device, after the stove is ignited, a knob needs to be pressed for a few seconds, and the thermocouple is heated to loosen the hand.

Therefore, a new solenoid valve needs to be designed.

Disclosure of Invention

It is an object of the present application to provide a dual coil solenoid valve. The purpose of removing the waiting time when the kitchen range is opened is achieved.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: the double-coil electromagnetic valve comprises a valve seat, wherein a first static iron core and a second static iron core are respectively arranged on two sides of the valve seat, a main coil is wound on the first static iron core and the second static iron core, a secondary coil is further wound on the first static iron core, the main coil is suitable for being connected with a thermocouple, and the secondary coil is suitable for being connected with a pulse generator.

The current is generated by the pulse generator and passes through the auxiliary coil, so that the magnetic field generated by the instant current acts on the movable iron core, and the waiting time for the electromagnetic valve to maintain the suction by pressing the air valve knob by hand when the cooker is opened is removed. After the electromagnetic valve maintains the suction for a few seconds, the thermocouple is heated, so that the suction of the electromagnetic valve can be maintained.

Preferably, the first static iron core is sleeved with a mounting bracket, and the auxiliary coil is wound on the mounting bracket.

Preferably, the mounting bracket is in an ']' shape along the axial section of the double-coil electromagnetic valve, and comprises a bottom plate attached to the side surface of the first static iron core, and an upper limit plate and a lower limit plate arranged at two ends of the bottom plate, wherein a groove suitable for winding the auxiliary coil is formed between the upper limit plate and the lower limit plate.

Preferably, the main coil is wound on the upper portion of the first static iron core, the mounting bracket is arranged on the lower portion of the first static iron core, the upper limiting plate abuts against the main coil, and the lower limiting plate abuts against the valve seat.

Preferably, the main coil is wound around the second stationary core from the bottom up, extends toward the first stationary core after being wound around the upper portion of the second stationary core, and is wound around the first stationary core from the top down.

Preferably, the diameter of the main coil is larger than that of the secondary coil, the main coil is an enameled wire with the diameter of 0.2mm or more and 0.8mm or less, the diameter of the secondary coil is 0.1mm or less and the number of turns is 50 or more, and the length of the coil part wound on the first static iron core is equal to that of the coil part wound on the second static iron core.

Preferably, the valve seat is provided with a fastening part suitable for being fastened with the valve sleeve, the valve sleeve is provided with a corresponding fastening hook, the inner wall of the fastening part is attached to the outer side surface of the first static iron core and the outer side surface of the second static iron core, the upper end surface of the fastening part is a plane, and the outer wall of the fastening part comprises a guide surface, a fastening groove and an extension surface, wherein the guide surface is suitable for being inserted by the fastening hook, the extension surface is connected with the fastening groove, and the extension surface extends downwards along the axial direction so that the fastening groove is staggered with the inner wall of the fastening part on the horizontal plane.

Preferably, the double-coil electromagnetic valve comprises a first electrode and a second electrode, the main coil is connected with the thermocouple through the first electrode, and the auxiliary coil is connected with the pulse generator through the second electrode.

As one preferable mode, a first wire passing hole with smaller aperture, a second wire passing hole with larger aperture and a mounting hole are sequentially formed in the valve seat, an electrode insert is arranged in the mounting hole, a sealing piece is arranged between the electrode insert and the valve seat, a chamfer is arranged between the mounting hole and the second wire passing hole, the chamfer is suitable for guiding the top of the electrode insert to enter the second wire passing hole, a transition inclined plane is arranged between the second wire passing hole and the first wire passing hole, the first electrode and the second electrode are arranged on the electrode insert and are spaced a certain distance apart, and the main coil and the auxiliary coil pass through the second wire passing hole from bottom to top and enter into a spacing space between the first static iron core and the second static iron core.

As one preferred, the electrode insert comprises a first section structure with a smaller diameter and a second section structure with a larger diameter, the top of the first section structure enters the second wire passing hole, the second section structure is in interference fit with the inner wall of the valve seat, the sealing element is a sealing ring and surrounds the lower part of the first section structure, the bottom end of the valve seat is inwards bent to form a wrapping edge, the wrapping edge is abutted to the bottom surface of the second section structure, and the outer wall of the valve seat is provided with a circle of mounting groove.

Compared with the prior art, the beneficial effect of this application lies in: (1) The current is generated by the pulse generator and passes through the auxiliary coil, so that a magnetic field generated by the instant current acts on the movable iron core, and the waiting time for the electromagnetic valve to maintain suction by pressing the air valve knob by hand when the cooker is opened is removed; (2) The pulse generator only needs to generate instantaneous current in one instantaneous operation of the gas valve knob switching state, and the electromagnetic valve is attracted by the thermocouple operation in other times, so that the device has the advantages of low energy consumption and durability. (3) The valve seat is provided with a first static iron core and a second static iron core in parallel, the first static iron core and the second static iron core are wound with a main coil, the first static iron core is also wound with a secondary coil, under the normal use condition of the kitchen range, a thermocouple generates electric potential to act on the main coil, the main coil simultaneously generates a magnetic field on the first static iron core and the second static iron core, the two static iron cores attract the movable iron core from two sides, so that the stress between the movable iron core and the static iron core is more uniform, the whole attracting surface can be tightly attached, and the secondary coil is only arranged on one side, because the secondary coil needs to be wound with a thinner wire by at least dozens of turns to ensure that enough magnetic force is generated, the structure of the secondary coil is relatively more complex, the installation is more inconvenient, and meanwhile, the working time of the secondary coil is extremely short, so that the secondary coil is arranged on the first static iron core and the second static iron core at different times.

Drawings

FIG. 1 is a schematic diagram of a prior art single coil solenoid valve;

FIG. 2 is a schematic structural diagram of a dual coil solenoid valve provided herein;

FIG. 3 is an enlarged schematic view of a partial structure A of a dual coil solenoid valve;

FIG. 4 is an enlarged schematic view of a partial structure B of a dual coil solenoid valve;

FIG. 5 is an enlarged schematic view of a partial structure at an electrode insert in a dual coil solenoid valve;

in the figure: 10. an electrode insert; 1a, a first section structure; 1b, a second section structure; 11. a first electrode; 12. a second electrode; 20. a seal; 40. a valve seat; 41. a fastening part; 411. an inner wall; 412. an upper end surface; 413. a guide surface; 414. an extension surface; 41a, a clamping groove; 4a, a first wire through hole; 4b, a second wire through hole; 4c, mounting holes; 4c1, chamfering; 4b1, transition slope; 4d, mounting grooves; 51. a main coil; 52. a sub-coil; 53. a mounting bracket; 531. a bottom plate; 532. an upper limit plate; 533. a lower limit plate; 61. a first stationary core; 62. a second stationary core; 70. a valve sleeve; 71. a hook; 80. a movable iron core; 90. and (3) a spring.

Detailed Description

The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth terms such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific protection scope of the present application that the device or element referred to must have a specific azimuth configuration and operation, as indicated or implied.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 shows a single coil electromagnetic valve in the prior art, which comprises an electrode assembly 01, a sealing ring 02, a valve seat 03, a coil 04, a static iron core 05, a movable iron core 06, a valve cover 07, a valve shaft 08, a spring 09, a spring seat 010 and a sealing gasket 011, wherein after a kitchen range is ignited, a knob is required to be pressed for a few seconds, and a thermocouple is heated to be released.

For this purpose, as shown in fig. 2-5, the present application provides a dual-coil electromagnetic valve, wherein a first static iron core 61 and a second static iron core 62 are respectively disposed at two sides of a valve seat 40, a main coil 51 is wound on the first static iron core 61 and the second static iron core 62, a sub-coil 52 is further wound on the first static iron core 61, the main coil 51 is suitable for being connected with a thermocouple, and the sub-coil 52 is suitable for being connected with a pulse generator.

Compared with the prior art, the beneficial effect of this application lies in: (1) The current is generated by the pulse generator and passes through the auxiliary coil 52, so that the magnetic field generated by the instant current acts on the movable iron core 80, and the waiting time for the electromagnetic valve to maintain the suction by pressing the air valve knob by hand when the cooker is opened is removed; (2) The pulse generator only needs to generate instantaneous current in one instantaneous operation of the gas valve knob switching state, and the electromagnetic valve is attracted by the thermocouple operation in other times, so that the device has the advantages of low energy consumption and durability. (3) The valve seat 40 is provided with the first static iron core 61 and the second static iron core 62 in parallel, the primary coil 51 is wound on the first static iron core 61 and the second static iron core 62, the secondary coil 52 is wound on the first static iron core 61, under the normal use condition of the kitchen range, the thermocouple generates electric potential to act on the primary coil 51, the primary coil 51 simultaneously generates magnetic fields on the first static iron core 61 and the second static iron core 62, the two static iron cores attract the movable iron core 80 from two sides, so that the stress between the movable iron core 80 and the static iron core is more uniform, the whole attracting surface can be closely attached, and the secondary coil 52 is only arranged on one side, because the secondary coil 52 needs to be wound by using thinner wires for at least dozens of turns to ensure that enough magnetic force is generated, the structure of the secondary coil 52 is relatively more complex, the installation is more inconvenient, and meanwhile, the working time of the secondary coil 52 is extremely short, so the secondary coil 52 is not arranged on the first static iron core 61 and the second static iron core 62.

Considering that the wires of the auxiliary coil 52 are thinner and the number of turns required to be wound is large, in order to improve the production and assembly efficiency, the first static iron core 61 is sleeved with the mounting bracket 53, the auxiliary coil 52 is wound on the mounting bracket 53, and during production, the automatic equipment is used for winding the thin wires on the mounting bracket 53, namely, when the electromagnetic valve is assembled, the auxiliary coil 52 and the mounting bracket 53 are assembled, and then the mounting bracket 53 is sleeved into the first static iron core 61.

Specifically, the cross section of the mounting bracket 53 along the axial direction of the dual coil electromagnetic valve is ']', which includes a bottom plate 531 attached to the side surface of the first stationary core 61, and an upper limiting plate 532 and a lower limiting plate 533 disposed at both ends of the bottom plate 531, and a groove 53a adapted to wind the secondary coil 52 is formed between the upper limiting plate 532 and the lower limiting plate 533. The mounting bracket 53 has a simple structure and low processing and using costs.

Further, the main coil 51 is wound on the upper portion of the first stationary core 61, the mounting bracket 53 is disposed on the lower portion of the first stationary core 61, the upper limiting plate 532 abuts against the main coil 51, and the lower limiting plate 533 abuts against the valve seat 40. The fixing mode of the mounting bracket 53 is simple, when in actual production and assembly, the mounting bracket 53 is sleeved on the first static iron core 61, and the main coil 51 is wound, so that the operation is easy, and the assembly efficiency is high.

More specifically, the main coil 51 is wound up from below along the second stationary core 62, extends toward the first stationary core 61 after being wound up to the upper portion of the second stationary core 62, and is wound up from above along the first stationary core 61. The winding direction of the main coil 51 can be designed very regularly, and the operation is easy when the main coil 51 is wound.

Preferably, the diameter of the main coil 51 is larger than that of the secondary coil 52, the main coil 51 is an enameled wire with a diameter of 0.2mm or more and 0.8mm or less, and the main coil 51 has a larger diameter, is easy to wind on a static iron core and is not easy to break.

The secondary coil 52 has a diameter of 0.1mm or less and a number of turns of 50 or more to ensure that sufficient magnetic force can be generated to cause the plunger 80 to be attracted downward against the restoring force of the spring 90.

In order to achieve a uniform winding arrangement of the two coils, the length of the coil wound on the first stationary core 61 is equal to the length of the coil wound on the second stationary core 62.

In this embodiment, the primary coil 51 has a diameter of 0.41mm, is wound 9 turns around the second stationary core 62, is wound 3 turns around the first stationary core 61, and the secondary coil 52 has a diameter of 0.07mm, and is wound 75 turns in total.

As a preferred mode, the valve seat 40 is provided with a fastening part 41 suitable for being fastened with the valve sleeve 70, the valve sleeve 70 is provided with a corresponding fastening hook 71, the valve seat 40 is fastened with the valve sleeve 70 in a simple connection mode, the inner wall 411 of the fastening part 41 is attached to the outer side surfaces of the first static iron core 61 and the second static iron core 62, the two iron cores are limited and fixed, the upper end surface 412 of the fastening part 41 is a plane suitable for supporting the main coil 51 and the lower limiting plate 533, the plane supporting performance is good, the outer wall of the fastening part 41 comprises a guide surface 413 which is arranged obliquely outwards from the outer edge of the upper end surface 412, a fastening groove 41a suitable for inserting the fastening hook 71, and an extension surface 414 for connecting the guide surface 413 and the fastening groove 41a, and the extension surface 414 extends downwards along the axial direction so that the fastening groove 41a is staggered with the inner wall 411 of the fastening part 41 on the horizontal plane. The guiding surface 413 is used for guiding the fastening portion 41 to insert into the valve sleeve 70 so that the fastening hook 71 is inserted into the fastening groove 41a, and the extending surface 414 is provided in consideration that if the fastening groove 41a is parallel or staggered with the bottom end of the static iron core in the horizontal plane, the fastening groove 41a is provided at a place with a thinner wall thickness, which may result in the overall structural strength of the fastening portion 41, particularly the structural strength at the fastening groove 41a being affected.

As one preferable example, the double coil solenoid valve includes a first electrode 11 and a second electrode 12, the main coil 51 is connected to the thermocouple through the first electrode 11, the sub-coil 52 is connected to the pulse generator through the second electrode 12, and two electrode pins correspond to the two coils, respectively.

As one preferable mode, a first wire through hole 4a with smaller aperture, a second wire through hole 4b with larger aperture and a mounting hole 4c are sequentially arranged in the valve seat 40, an electrode insert 10 is arranged in the mounting hole 4c, a sealing piece 20 is arranged between the electrode insert 10 and the valve seat 40 so as to strengthen waterproof and dustproof effects, a chamfer 4c1 is arranged between the mounting hole 4c and the second wire through hole 4b, the chamfer 4c1 is suitable for guiding the top of the electrode insert 10 to enter the second wire through hole 4b, a transition inclined plane 4b1 is arranged between the second wire through hole 4b and the first wire through hole 4a for guiding and improving the assembly efficiency of the electromagnetic valve, the main coil 51 and the auxiliary coil 52 are naturally guided to gather towards the middle for wire passing, the first electrode 11 and the second electrode 12 are arranged on the electrode insert 10 and are spaced a certain distance, and the occurrence of wire collision and short circuit is prevented, and the main coil 51 and the auxiliary coil 52 pass through the second wire through hole 4b and the first wire through hole 4a from bottom to top to enter a space between the first static iron core 61 and the second static iron core 62. It is easy to understand that the series structures of the first via hole 4a, the second via hole 4b, the transition inclined plane 4b1, and the like are arranged to guide the wire passing direction of the wire just because the two electrodes are separated by a certain distance.

The electrode insert 10 includes a first section structure 1a with a smaller diameter and a second section structure 1b with a larger diameter, the top of the first section structure 1a enters the second wire passing hole 4b, the second section structure 1b is in interference fit with the inner wall 411 of the valve seat 40, the connection is firm, the tightness is good, the sealing element 20 is a sealing ring and is arranged at the lower part of the first section structure 1a in a surrounding manner, the bottom end of the valve seat 40 is inwards bent to form a wrapping edge, the bottom surface of the second section structure 1b of the wrapping Bian Dichu firmly fixes the electrode insert 10 in the mounting hole 4c, the structures of the electrode insert 10 and the valve seat 40 are simple and easy to process, and a circle of mounting groove 4d is formed on the outer wall of the valve seat 40 and used for mounting a thermocouple.

The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims (10)

1. Double coil solenoid valve, its characterized in that: the valve seat both sides are provided with first quiet iron core and second quiet iron core respectively, first quiet iron core with the winding has the main coil on the quiet iron core of second, still wound on the quiet iron core of first and have a secondary coil, the main coil is suitable for being connected with the thermocouple, the secondary coil is suitable for being connected with pulse generator.

2. The dual coil solenoid valve as set forth in claim 1, wherein: the first static iron core is sleeved with a mounting bracket, and the auxiliary coil is wound on the mounting bracket.

3. The dual coil solenoid valve as set forth in claim 2, wherein: the mounting bracket is in an 'shape' along the axial section of the double-coil electromagnetic valve, and comprises a bottom plate attached to the side face of the first static iron core, an upper limiting plate and a lower limiting plate which are arranged at two ends of the bottom plate, and a groove suitable for winding the auxiliary coil is formed between the upper limiting plate and the lower limiting plate.

4. A dual coil solenoid valve as set forth in claim 3 wherein: the main coil is wound on the upper portion of the first static iron core, the mounting bracket is arranged on the lower portion of the first static iron core, the upper limiting plate abuts against the main coil, and the lower limiting plate abuts against the valve seat.

5. The dual coil solenoid valve as set forth in claim 4, wherein: the main coil is wound up from bottom to top along the second static iron core, extends towards the first static iron core after being wound to the upper part of the second static iron core, and is wound up from top to bottom along the first static iron core.

6. The dual coil solenoid valve as set forth in claim 5, wherein: the diameter of the main coil is larger than that of the secondary coil, the main coil is an enameled wire with the diameter being larger than or equal to 0.2mm and smaller than or equal to 0.8mm, the diameter of the secondary coil is smaller than or equal to 0.1mm, the number of turns is larger than or equal to 50 turns, and the length of a coil winding part on the first static iron core is equal to that of a coil winding part on the second static iron core.

7. The dual coil solenoid valve as set forth in claim 4, wherein: the valve seat is provided with a clamping part suitable for being clamped with the valve sleeve, the valve sleeve is provided with a corresponding clamping hook, the inner wall of the clamping part is attached to the outer side face of the first static iron core and the outer side face of the second static iron core, the upper end face of the clamping part is a plane, the outer wall of the clamping part comprises a guide surface, a clamping groove and an extension surface, the guide surface is suitable for being inserted into the clamping groove, the extension surface is axially extended downwards, and the clamping groove is staggered with the inner wall of the clamping part on the horizontal plane.

8. A dual coil solenoid valve according to any one of claims 1 to 7 wherein: the double-coil electromagnetic valve comprises a first electrode and a second electrode, the main coil is connected with the thermocouple through the first electrode, and the auxiliary coil is connected with the pulse generator through the second electrode.

9. The dual coil solenoid valve as set forth in claim 8, wherein: the novel high-voltage power supply is characterized in that a first wire passing hole with smaller aperture, a second wire passing hole with larger aperture and a mounting hole are sequentially formed in the valve seat, an electrode insert is mounted in the mounting hole, a sealing piece is arranged between the electrode insert and the valve seat, a chamfer is arranged between the mounting hole and the second wire passing hole, the chamfer is suitable for guiding the top of the electrode insert to enter the second wire passing hole, a transition inclined plane is arranged between the second wire passing hole and the first wire passing hole, a first electrode and a second electrode are arranged on the electrode insert and are spaced a certain distance apart, and the main coil and the auxiliary coil pass through the second wire passing hole from bottom to top, and the first wire passing hole enters into a spacing space between the first static iron core and the second static iron core.

10. The dual coil solenoid valve as set forth in claim 9, wherein: the electrode inserts include the first section structure that the diameter is less and the great second section structure of diameter, the top of first section structure gets into the second is crossed the line hole, the second section structure with the inner wall interference fit of disk seat, the sealing member is the sealing washer and encircles the setting and be in the lower part of first section structure, the bottom of disk seat is inwards buckled and is formed the bordure, the conflict of bordure the bottom surface of second section structure, the outer wall of disk seat is equipped with round mounting groove.