CN212319795U

CN212319795U - Gas flameout protection device, magnetic device thereof and gas equipment

Info

Publication number: CN212319795U
Application number: CN202020963698.8U
Authority: CN
Inventors: 黄忠林; 郭正柔
Original assignee: Zhuhai Unicook Technology Co Ltd
Current assignee: Zhuhai Unicook Technology Co Ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-01-08
Anticipated expiration: 2030-05-28

Abstract

The utility model provides a gas flame-out protection device and magnetic device and gas equipment thereof, wherein, a gas flame-out protection device's magnetic device, include: the electromagnet comprises a coil, and when the coil is powered, the electromagnet can generate a magnetic field to adsorb the armature; the permanent magnet is arranged on a magnetic loop generated by the electromagnet and provided with two magnetizing directions, and when the coil is powered, magnetic field generated by the permanent magnet can be superposed with a magnetic field generated by the electromagnet to provide larger adsorption force for the armature. Use the technical scheme of the utility model can be effectual improve among the prior art to the sealing member adsorption affinity not enough and press the longer problem of time when striking sparks.

Description

Gas flameout protection device, magnetic device thereof and gas equipment

Technical Field

The utility model relates to a kitchen utensils and appliances field particularly, relates to a gas flame-out protection device and magnetic device and gas equipment thereof.

Background

At present, the flame-out protection device for gas in the market mainly adopts a mode of utilizing an electromagnet to adsorb a sealing piece to prevent gas leakage. The electromagnet is divided into a single coil and a double coil, the double coil flameout protection device is powered by the battery at the initial stage of ignition, after the thermocouple generates enough electromotive force, the battery gives up power supply, the thermocouple supplies power, and the flameout protection device is kept open. The double-coil flameout protection device has the defects that power is supplied under the action of thermocouple induced electromotive force, the generated electromagnetic force is relatively small, the adsorption force of the double-coil flameout protection device on a sealing piece is easy to be insufficient after long-term use, and the using effect is poor. In addition, the thermocouple generates enough potential for a long time, so that the time required for pressing during ignition is long, and the use experience of a user is reduced.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a gas flame-out protection device and magnetic device and gas equipment thereof to improve the longer problem of press time when being not enough and strike sparks to the sealing member adsorption affinity among the prior art.

In order to achieve the above object, according to an aspect of the present invention, there is provided a magnetic device of a gas flame-out protection device, comprising: the electromagnet comprises a coil, and when the coil is powered, the electromagnet can generate a magnetic field to adsorb the armature; the permanent magnet is arranged on a magnetic loop generated by the electromagnet and provided with two magnetizing directions, and when the coil is powered, magnetic field generated by the permanent magnet can be superposed with a magnetic field generated by the electromagnet to provide larger adsorption force for the armature.

Further, the permanent magnet comprises a first magnetic block and a second magnetic block, and the magnetizing directions of the first magnetic block and the second magnetic block are opposite.

Furthermore, the first magnetic block and the second magnetic block are of an integral structure or a split structure.

Further, the magnetic device further comprises: the permanent magnet is clamped between the bottom of the electromagnet and the top of the magnetizer, and when the coil is electrified to enable the armature to be adsorbed to the electromagnet, the magnetizer, the permanent magnet, the electromagnet and the armature can enclose a closed magnetic loop L; when the coil is powered off, the magnetizer, the permanent magnet and the electromagnet can form a closed magnetic loop M.

Further, the electromagnet further comprises a framework, the framework is U-shaped, the permanent magnet is arranged below the framework, and the magnetizer is T-shaped and arranged below the permanent magnet.

According to the utility model discloses an on the other hand provides a gas flame-out protection device, and gas flame-out protection device includes: the magnetic device is the magnetic device; the electromagnet and the permanent magnet of the magnetic device are arranged on the valve seat; a seal including an armature, the seal being movably arranged relative to the valve seat, the magnetic device being capable of attracting the armature to maintain the seal in an open position when a coil of the magnetic device is energized, and the seal being capable of moving to a closed position when the coil is de-energized; and the flameout induction device is electrically connected with the coil so as to power off the driving coil when flameout is detected.

Further, the gas flame-out protection device still includes: the elastic piece is connected with the sealing piece, and when the coil is electrified, the resultant force of magnetic attraction force generated by the electromagnet and the permanent magnet is greater than the restoring force of the elastic piece so as to adsorb the armature; when the coil is powered off, the magnetic attraction force generated by the permanent magnet is smaller than the restoring force of the elastic piece so that the armature moves to the closing position under the restoring force of the elastic piece.

Further, the sealing element also comprises a sealing block, and when the coil is powered off, the sealing block can seal an air outlet or an air inlet of external equipment.

Further, the sealing member still includes the connecting rod of connecting armature and seal block, and gas flame-out protection device still includes: the dustcoat, dustcoat and disk seat fixed connection, the connecting rod wears to locate on the dustcoat, and the spring outside the connecting rod is located for the cover to the elastic component, the one end and the sealed piece butt of spring, the other end and the dustcoat butt of spring.

According to the utility model discloses an on the other hand provides a gas equipment, include: a gas equipment body; the gas flameout protection device is arranged on the gas equipment body and is the gas flameout protection device.

The control device is electrically connected with a coil of the gas flameout protection device and can control the coil to be powered on or powered off, a flameout induction device of the gas flameout protection device is connected with the control device, and the control device can receive the ignition state detected by the flameout induction device and control the coil to be powered on or powered off according to the detected ignition information; and/or the display device is electrically connected with the control device, and the control device can control the display device to display the ignition state of the gas equipment; and/or the alarm device is electrically connected with the control device, and the control device can control the alarm device to feed back the ignition state in the forms of voice broadcasting, vibration and light indication; and/or the communication device is electrically connected with the control device and is used for receiving a control command of the external equipment and transmitting the control command to the control device, and the control device can control the power-on state of the coil according to the control command.

Use the technical scheme of the utility model, set up the permanent magnet on the basis of electromagnet, the magnetic induction direction of permanent magnet is the same with the magnetic induction direction of electromagnet, through this kind of mode, the magnetic field that makes the permanent magnet produce superposes with the magnetic field that the electromagnet produced, can make magnetic device provide bigger magnetic force, and then produces bigger adsorption affinity to the sealing member, has avoided the problem that the magnetic device that leads to of long-term use is not enough to sealing member adsorption affinity, has promoted magnetic device's result of use. In addition, even if the permanent magnet is arranged, the magnetic device has certain magnetic force, so that after the permanent magnet is ignited, enough potential can be generated in a short time, the pressing time during the ignition is shortened, and the user experience is improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic longitudinal sectional view of a gas flame-out protection device according to an embodiment of the invention;

FIG. 2 shows a cross-sectional view A-A of the gas flame arrestor of FIG. 1;

FIG. 3 shows a schematic perspective view of the permanent magnet of the gas flame-out protection device of FIG. 1;

FIG. 4 shows a front view of the permanent magnet of FIG. 3 with a charging direction indicator;

FIG. 5 shows a top view of the permanent magnet of FIG. 3 with a magnetization direction indicator;

FIG. 6 shows a schematic perspective view of the skeleton of the gas flame-out protection device of FIG. 1;

FIG. 7 shows a perspective view of the magnetic conductor of the gas flame-out protection device of FIG. 1; and

fig. 8 is a schematic combined three-dimensional structure diagram of the skeleton, the permanent magnet and the magnetizer of the gas extinction protection device in fig. 1.

Wherein the figures include the following reference numerals:

10. an electromagnet; 11. a framework; 12. a coil; 20. a thermocouple; 30. a permanent magnet; 31. a first magnetic block; 32. a second magnetic block; 40. a magnetizer; 50. a valve seat; 60. a housing; 70. a magnetic device; 80. a seal member; 90. an elastic member; 100. an armature; 110. a sealing block; 120. a connecting rod.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 and 8, the magnetic device of the gas extinction protection device of the present embodiment includes: an electromagnet 10 and a permanent magnet 30, wherein the electromagnet 10 comprises a coil 12, and when the coil 12 is powered, the electromagnet 10 can generate a magnetic field to adsorb an armature; the permanent magnet 30 is arranged on a magnetic loop generated by the electromagnet 10, the permanent magnet 30 has two magnetizing directions, and when the coil 12 is powered, the magnetic field generated by the permanent magnet 30 can be superposed with the magnetic field generated by the electromagnet 10 to provide larger attraction force for the armature.

The technical scheme of this embodiment is applied, set up permanent magnet 30 on the basis of electromagnet 10, the magnetic induction direction of permanent magnet 30 is the same with the magnetic induction direction of electromagnet 10, through this kind of mode, the magnetic field that makes permanent magnet 30 produce superposes with the magnetic field that electromagnet 10 produced, can make magnetic device provide bigger magnetic force, and then produce bigger adsorption affinity to armature, also can produce bigger adsorption affinity to the sealing member that has armature to magnetic device, the problem that the magnetic device that has avoided long-term use to lead to is not enough to sealing member adsorption affinity has promoted magnetic device's result of use. In addition, even if the permanent magnet 30 is not ignited, the magnetic device 70 has a certain magnetic force, so that after ignition, enough electric potential can be generated only in a short time, the pressing time during ignition is reduced, and the user experience is improved.

It should be noted that, in the present embodiment, the permanent magnet 30 has two magnetizing directions, and the above structure enables the magnetic field of the permanent magnet 30 to be doubled, so that the magnetic device provides a larger magnetic force, and thus a larger attraction force is generated to the sealing member.

As shown in fig. 1 to 5, the permanent magnet 30 includes a first magnetic block 31 and a second magnetic block 32, and the first magnetic block 31 and the second magnetic block 32 have opposite magnetizing directions. As shown in fig. 3 to 4, the top of the first magnetic block is an N-pole, the bottom is an S-pole, and the top of the second magnetic block is an S-pole, and the bottom is an N-pole. The simple structure can realize the purpose of doubling the magnetic field of the permanent magnet 30, so that after the magnetic field of the permanent magnet 30 and the magnetic field of the electromagnet 10 are superposed, a larger adsorption force can be provided, and the magnetic device 70 has a better adsorption effect.

As shown in fig. 3 to 5, the first magnetic block 31 and the second magnetic block 32 are integrated or separated. In the above structure, the first magnetic block 31 and the second magnetic block 32 are separately arranged, so that the first magnetic block 31 and the second magnetic block 32 are easily magnetized. If the first magnetic block 31 and the second magnetic block 32 are integrally provided, the assembly of the magnetic device 70 is facilitated.

As shown in fig. 1, 7 and 8, the magnetic device further includes: the permanent magnet 30 is clamped between the bottom of the electromagnet 10 and the top of the magnetizer 40, and when the coil 12 is electrified to enable the armature to be adsorbed to the electromagnet 10, the magnetizer 40, the permanent magnet 30, the electromagnet 10 and the armature 100 can enclose a closed magnetic loop L; when the coil 12 is de-energized, the magnetizer 40, the permanent magnet 30 and the electromagnet 10 can enclose a closed magnetic circuit M. The structure enables the magnetizer 40, the permanent magnet 30 and the electromagnet 10 to be tightly connected together, and avoids the phenomenon of magnetic leakage caused by loose connection and influences on the magnetic attraction of the magnetic device on the armature. When the coil 12 is powered off, the closed magnetic loop M has a certain magnetic force, and after the coil 12 is powered on, the magnetic force generated by the electromagnet 10 and the magnetic force generated by the permanent magnet 30 are superposed, so that the armature 100 can be attracted to form the closed magnetic loop L, and the structure improves the magnetic attraction force of the magnetic device 70.

As shown in fig. 1 and 6, the electromagnet 10 further includes a frame 11, the frame 11 is U-shaped, the permanent magnet 30 is disposed below the frame 11, and the magnetizer 40 is T-shaped and disposed below the permanent magnet 30. In the structure, the magnetizer 40 is of an inverted T-shaped structure, the middle part of the permanent magnet 30 is provided with a through hole, and the magnetizer 40 can be inserted into the permanent magnet 30, so that the permanent magnet 30 can be positioned and assembled conveniently; and on the other hand, magnetic conduction can be facilitated.

The coil 12 is connected to the thermocouple 20 through a power line, and when the thermocouple 20 is heated, thermoelectromotive force is generated, and the thermoelectromotive force generated by the thermocouple is connected into the coil 12 to generate a magnetic field. When the thermocouple 20 is heated and changed, the generated thermoelectromotive force is also changed, so that the magnetic field intensity of the electromagnet 10 is changed. Specifically, when the temperature to which the thermocouple 20 is heated decreases, the thermal electromotive force generated by the thermocouple decreases, and the magnetic field of the electromagnet 10 decreases, whereas the magnetic field increases. In addition, the material of the framework 11 is soft magnetic material, and the material can make the framework 11 easy to magnetize and demagnetize, thereby shortening the time of electromagnetic field generation, reducing the starting time of the magnetic device and improving the use experience of users.

As shown in fig. 1, the present application further provides a gas flame-out protection device, an embodiment of the gas flame-out protection device according to the present application comprises: a magnetic device 70, a valve seat 50, a seal 80, and a misfire sensing device, wherein the magnetic device 70 is a magnetic device; the electromagnet 10 and the permanent magnet 30 of the magnetic device 70 are disposed on the valve seat 50; the seal 80 comprises an armature 100, the seal 80 being movably arranged with respect to the valve seat 50, the magnetic means 70 being able to attract the armature 100 when the coil 12 of the magnetic means 70 is energized, so as to keep the seal 80 in the open position (opening the inlet of the gas appliance), the seal 80 being able to move to the closed position (closing the inlet of the gas appliance) when the coil 12 is de-energized; a misfire sensing device electrically connected to the coil 12 to drive the coil 12 to de-energize when a misfire is detected. It should be noted that the flameout sensing device may be a thermocouple 20, a plasma temperature sensing device or a temperature sensing device and a control unit, when the gas is ignited, the coil 12 is in a power supply state, when the flameout sensing device senses extinguishment, the control unit cuts off a power supply circuit of the coil 12, and the flameout sensing device can sense the flameout state from temperature sensing, video capture and other modes. In the above structure, when the magnetic device 70 generates sufficient adsorption force, the sealing member 80 is in the open position, and at this time, gas is discharged from the gas outlet, and the gas equipment is normally used; when the flame is extinguished, the temperature of the heated end of the thermocouple 20 is reduced, the thermal electromotive force of the thermocouple 20 is rapidly reduced to 0, so that the coil 12 is de-energized, the magnetic field intensity of the magnetic device 70 is reduced, the adsorption force is not enough to adsorb the sealing element 80, the sealing element 80 returns to the sealing position, and the gas at the gas outlet is blocked from being discharged, so that the danger caused by gas leakage is avoided. In addition, since the magnetic device 70 has advantages of strong adsorption force and rapid generation of magnetic force, the gas extinction protection device having the same also has the advantages. Of course, in other embodiments the seal 80 may not cooperate with the gas outlet of a gas appliance, but rather with the gas inlet of a gas appliance.

As shown in fig. 1, the gas extinction protection device further includes: the elastic piece 90, the elastic piece 90 is connected with the sealing piece 80, when the coil 12 is electrified, the resultant force of the magnetic attraction force generated by the electromagnet 10 and the permanent magnet 30 is greater than the restoring force of the elastic piece 90 so as to adsorb the armature 100; when the coil 12 is de-energized, the magnetic attraction force generated by the permanent magnet 30 is less than the restoring force of the elastic member 90 to move the armature 100 to the closed position by the restoring force of the elastic member 90. Above-mentioned structure can make sealing member 80 can return to sealed position automatically through setting up elastic component 90, simple structure, low in production cost. In addition, since the attraction force of the magnetic device 70 is increased in the present embodiment, the elasticity of the elastic member 90 can be increased accordingly, so that the sealing member 80 has better sealing performance.

Specifically, as shown in fig. 1, the sealing member 80 further includes a sealing block 110, and the sealing block 110 can seal an air outlet or an air inlet of an external device when the coil 12 is de-energized. The structure can enhance the sealing performance and avoid gas leakage caused by poor sealing.

Specifically, as shown in fig. 1, the sealing member 80 further includes a connecting rod 120 connecting the armature 100 and the sealing block 110, and the gas extinction protection device further includes: the outer cover 60, outer cover 60 and valve seat 50 fixed connection, the connecting rod 120 wears to locate on the outer cover 60, and the elastic component 90 is the spring of locating the connecting rod 120 outward for the cover, and the one end and the sealed piece 110 butt of spring, the other end and the outer cover 60 butt of spring. In the above structure, when the coil 12 of the magnetic device 70 is energized, the attraction force of the magnetic device 70 is increased, the magnetic device 70 attracts the armature 100, and the connecting rod 120 pulls the sealing block 110 downward, so that the gas is in a conducting state. When the coil 12 is energized, the attraction force of the magnetic device 70 is weakened, and the sealing block 110 automatically returns to the sealing position under the action of the elastic member 90. The above structure can further improve the sealability of the sealing member 80.

It should be noted that the coil 12 is wound around the bobbin 11, and the cover 60 is disposed on the circumferential outer side of the coil 12 to effectively protect the coil 12, so as to prevent the electromagnet 10 from being used improperly due to damage of the coil 12, and to prevent the magnetic device 70 from being disabled.

The present application also provides a gas appliance, an embodiment of a gas appliance (not shown in the figures) according to the present application comprising: gas equipment body and gas flame-out protection device, wherein, gas flame-out protection device sets up on the gas equipment body, and gas flame-out protection device is foretell gas flame-out protection device. Because the gas flameout protection device has the advantages of high safety and quick start, the gas equipment with the gas flameout protection device also has the advantages.

In this embodiment, the gas hot standby device is a gas stove, and the flameout sensing device of the gas flameout protection device may be a thermocouple or an ion sensing needle disposed at a burner of the gas stove.

Specifically, the gas equipment further comprises a control device, the control device is electrically connected with the coil 12 of the gas flameout protection device, the control device can control the coil 12 to be powered on or powered off, the flameout induction device of the gas flameout protection device is connected with the control device, and the control device can receive the ignition state detected by the flameout induction device and control the coil 12 to be powered on or powered off according to the detected ignition information.

The gas-fired apparatus further comprises one or more of the following:

and the display device is electrically connected with the control device, and the control device can control the display device to display the ignition state of the gas equipment.

The alarm device is electrically connected with the control device, and the control device can control the alarm device to feed back the ignition state in the forms of voice broadcasting, vibration and light indication.

And the communication device is electrically connected with the control device and is used for receiving a control command of an external device and transmitting the control command to the control device, and the control device can control the power-on state of the coil 12 according to the control command.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic device of a gas flame-out protection device is characterized by comprising:

the electromagnet comprises a coil, and when the coil is powered, the electromagnet can generate a magnetic field to adsorb the armature;

the permanent magnet is arranged on a magnetic loop generated by the electromagnet and provided with two magnetizing directions, and when the coil supplies power, magnetic field generated by the permanent magnet can be superposed with a magnetic field generated by the electromagnet to provide larger adsorption force for the armature.

2. The magnetic device of claim 1, wherein the permanent magnet comprises a first magnetic block and a second magnetic block, and the first magnetic block and the second magnetic block are oppositely charged.

3. The magnetic device of claim 2, wherein the first magnetic block and the second magnetic block are of an integral structure or a split structure.

4. The magnetic device of claim 1, further comprising:

the permanent magnet is clamped between the bottom of the electromagnet and the top of the magnetizer, and when the coil is electrified to enable the armature to be adsorbed to the electromagnet, the magnetizer, the permanent magnet, the electromagnet and the armature can enclose a closed magnetic loop L; when the coil is powered off, the magnetizer, the permanent magnet and the electromagnet can form a closed magnetic loop M.

5. The magnetic device according to claim 4, wherein the electromagnet further comprises a frame, wherein the frame is U-shaped, the permanent magnet is disposed below the frame, and the magnetizer is T-shaped and disposed below the permanent magnet.

6. A gas flame-out protection device, characterized in that, gas flame-out protection device includes:

a magnetic device according to any one of claims 1 to 5;

the electromagnet and the permanent magnet of the magnetic device are arranged on the valve seat;

a seal including an armature, the seal being movably disposed relative to the valve seat, the magnetic device being capable of attracting the armature to maintain the seal in an open position when a coil of the magnetic device is energized, and the seal being movable to a closed position when the coil is de-energized.

7. The gas flame out protection device of claim 6, further comprising:

the elastic piece is connected with the sealing piece, and when the coil is electrified, the resultant force of magnetic attraction force generated by the electromagnet and the permanent magnet is greater than the restoring force of the elastic piece so as to adsorb the armature; when the coil is powered off, the magnetic attraction force generated by the permanent magnet is smaller than the restoring force of the elastic piece, so that the armature moves to the closing position under the action of the restoring force of the elastic piece.

8. The gas flame arrester of claim 7, wherein the seal further comprises a sealing block capable of sealing an air outlet or an air inlet of an external device when the coil is de-energized.

9. The gas flame arrestor of claim 8, wherein the seal further includes a connecting rod connecting the armature and the seal block, the gas flame arrestor further comprising:

the outer cover, the outer cover with disk seat fixed connection, the connecting rod wears to locate on the outer cover, the elastic component is located for the cover the outer spring of connecting rod, the one end of spring with sealed piece butt, the other end of spring with the outer cover butt.

10. A gas-fired appliance comprising:

a gas equipment body;

gas flame-out protection device, set up on the gas equipment body, characterized in that, gas flame-out protection device is as defined in any one of claims 6 to 9.

11. The gas appliance according to claim 10, further comprising a control device, wherein the control device is electrically connected with the coil of the gas extinction protection device, the control device can control the coil to be powered on or powered off, the extinction induction device of the gas extinction protection device is connected with the control device, and the control device can receive the ignition state detected by the extinction induction device and control the coil to be powered on or powered off according to the detected ignition information; and/or the presence of a gas in the gas,

the display device is electrically connected with the control device, and the control device can control the display device to display the ignition state of the gas equipment; and/or the presence of a gas in the gas,

the control device can control the alarm device to feed back the ignition state in the forms of voice broadcasting, vibration and light indication; and/or the presence of a gas in the gas,

the communication device is electrically connected with the control device and is used for receiving a control command of an external device and transmitting the control command to the control device, and the control device can control the power-on state of the coil according to the control command.