KR100305744B1 - Overpressure cut-off device of portable gas range - Google Patents

Abstract

The present invention relates to an overpressure shut-off device of a portable gas cooker main body, which is located on one side of the burner (8) so as to block the flow of gas when an abnormal pressure occurs in the gas container (5). The thermocouple 10 for detecting a and the magnetic force generated by the thermoelectric power generated from the thermocouple 10 is formed to block the passage of the gas, the body front portion is provided with a moving rod 21, the moving rod A magnet blocking valve 20 having a metal piece 22 and a closing member 23 formed at an end of the 21 and positioned outside the moving rod 21 of the magnet blocking valve 20 and selectively moving rod 21. And a valve return spring 30 for buffering and restoring the valve, and a space portion 24 formed therein so as to accommodate the magnet shutoff valve 20 therein, and a gas inlet groove 41 on one side and the other side of the body. ) And a gas discharge groove 42 is provided, The other side of the discharge groove 42 is located in the valve housing 40, the control groove 43 is formed, and the control groove 43 formed on the other side of the valve housing 40, optionally the gas discharge groove ( A locking plate 51 is formed at the rear side of the body so as to open and close the outlet of 42, and a push pin 50 having a second spring 52 at the outside of the body and an upper portion of the valve housing 40. Located on the rear side of the body, the diaphragm 60 is provided with an adapter 61 for connecting the gas container 5, and is located in the front portion of the diaphragm 60, the gas is supplied and ignited by rotation The gas control knob 65 and the adapter 61 of the diaphragm 60 are formed on the rear side of the diaphragm 60, and an inner space is formed therein, and an accommodating space 71 having a stepped portion 72 is formed at the center thereof. One side of the storage space 71 is a body portion 70 in which the gas entry grooves 73 are formed, and a number formed inside the body portion 70. Located in the space 71 is moved to the rear side when the gas inflow of the overpressure, so that the front of the body is provided with a blotting rod 81, a locking jaw 82 is formed on the rear side, On the rear side of the locking jaw 82, the gas blocking member 80 having the third spring 83 and the fastener 84 is formed to be closely attached to the front surface of the blotting rod 81 of the gas blocking member 80. When the psi rod 81 is moved due to the inflow of overpressure gas, it is composed of a micro switch 90 to cut off the power supplied to the magnet shut-off valve 20 that was opening the gas passage by the thermoelectric power of the thermocouple 10 When abnormal pressure is generated in the gas container 5 when the portable gas cooker main body 100 is used, the blotting rod 81 formed on the front surface of the gas shutoff member 80 moves backward in the body portion 70 by overpressure. While being separated from the micro switch 90, the thermocouple 10 Cut off the power supplied to the magnet shut-off valve 20 is capable of blocking the gas is supplied to the burner (8).

Therefore, it is a very useful invention that can improve the marketability and safety.

Description

Overpressure Breaker of Portable Gas Range Body

The present invention relates to an overpressure shut-off device for a portable gas range, and more particularly, when an overpressure exceeding a reference value occurs in the gas container, the gas flow is automatically blocked to prevent the outflow of gas and the explosion of the gas container. It is invented to be.

Generally, cooking gas appliances are classified into fixed domestic gas ranges using liquefied natural gas contained in city gas and large gas containers, and portable gas ranges used by detachably removing small butane gas containers for outdoor use. have.

In the case of a domestic gas stove, it is a fire extinguishing gas blocking means for blocking the continuous supply of gas even when the broth overflows during cooking or the flame is extinguished by the wind, and as known in Japanese Patent Application Laid-Open No. 52-96163, Magnetically shut off valves may also be provided.

When the thermocouple installed around the burner head senses heat by ignition, the magnet shut-off valve opens the magnet shut-off valve that closed the gas passage with the thermoelectric power to supply the gas. When it is extinguished due to abnormal reasons, the thermoelectric power is lost from the thermocouple and the magnet shutoff valve is returned.

Such a domestic gas stove uses relatively low pressure city gas and liquefied natural gas (LPG), which has high safety of gas containers, as its fuel, and there is almost no risk of explosion of the container due to overpressure, and no means for preventing overpressure are provided.

On the other hand, a portable gas range using a disposable gas container as a main combustion source is relatively small in volume and is easy to carry and can be selectively moved by the user, and thus is widely used as a portable cooking utensil. Small cylindrical disposable gas containers will be used.

The portable gas range is provided with a gas container accommodating part on one side of the main body having a predetermined width and size, and gas is supplied through a constant pressure valve (governor) equipped with the gas container to generate heat of combustion by ignition. A spark generator with a burner head, a knob installed outside of the main body to control the amount of fuel supplied to the burner head and extinguish the gas by the governor, and an ignition device to ignite when the positive pressure valve is opened by the operation of the knob. Is provided.

And, the upper part of the main body is covered with a trivet cover, which is typically configured to be mounted by switching the position back and forth to minimize the volume of the trivet exposed position according to the storage and carrying time.

At this time, the cover is reversely installed by the user's carelessness, and the trivet may cook while the cooking vessel is placed on the burner head while the trivet is placed inside the main body. In this case, the flame immediately forms the upper part of the lid and the bottom of the cooking vessel. As it moves along, a phenomenon occurs in which the gas container housed on one side of the main body is heated. In this process, the high pressure gas is supplied by heating in the gas container.

In view of the characteristics of such a portable gas range has also been proposed to provide an overpressure cut-off device for safety.

Conventionally, in the overpressure shut-off device installed in a portable gas range, when an overpressure occurs in a positive pressure valve (gaverner), the overpressure pin is moved by the gas pressure to directly retreat the gripping lever and the gas container. It was composed of a mechanical structure to block the gas generated overpressure.

As described above, the conventional overpressure cut-off device of the portable gas range uses a mechanical structure in which the overpressure pin is retracted by the pressure of the gas, so that the overpressure pin moves according to the friction force or fitting tolerance according to the assembly state of the overpressure pin. Difference occurs.

Therefore, the gap between the narrow lever and the gas container is not enough to directly perform the role of the safety device.

In addition, there is a problem that the difference in the operating capacity is generated according to the pressure difference in the valve not only lowers the reliability of the product but also causes a very dangerous situation because the analytical operation is not desired.

In addition, the overpressure shutoff device of the conventional portable gas cooker has a closed end that causes a gas accident due to a large distribution of operating pressure and a problem in which the initial operating pressure is not constant.

SUMMARY OF THE INVENTION An object of the present invention is to provide an overpressure cut-off device for a portable gas range which can prevent the outflow of gas and explosion of the gas container by automatically blocking the flow of gas when an overpressure exceeding a reference value occurs in the gas container. There is.

Another object of the present invention is to provide an overpressure shut-off device for a portable gas range capable of improving the merchandise and safety.

1 is a plan view showing a state in which the inventors of the pressure overpressure device is installed in a portable gas range body.

Figure 2 is an enlarged side view of the main portion showing a state in which the overpressure cut-off device is installed in the portable gas range body to apply the present invention.

Figure 3 is an enlarged sectional view of the main portion showing the internal shape of the inventors of the over-pressure blocking device.

Figure 4 is an enlarged cross-sectional view showing the main structure of the actuating structure of the mark get cutoff valve for blocking the thermoelectric power by the over-pressure cut-off device of the present invention.

Figure 5 is a side cross-sectional view showing an installation structure of the pressure member and the push pin that is interlocked by the rotation operation of the present invention gas control knob.

Explanation of symbols on the main parts of the drawings

10-Thermocouple 20-Magnet shutoff valve

30-Valve return spring 40-Valve housing

50-Pushpin 60-Diaphragm

70-body 80-gas barrier member

90-micro switch 100-portable gas range

The object of the present invention is that the gas is supplied by opening and closing control of the gas regulating knob 65 from the gas container 5 detachably housed on one side, and sparks around the burner 8 by pressurization of the piezoelectric body 9. A portable gas stove body 100 that is generated and ignited;

It is installed between the gas control knob 65 and the gas container 5 inside the portable gas cooker main body 100, and the gas enters and exits through the passage hole 79 at a constant pressure by the diaphragm 60. A positive pressure valve 70 which is supplied to the burner 8 via 73;

A thermocouple (10) positioned at one side of the burner (8) of the portable gas stove main body (100) to generate thermoelectric power by the heat of combustion of the flame to sense whether the spark is ignited;

The magnetic force is generated by the thermoelectric force generated from the thermocouple 10 to maintain the gas passage in an open state, and during extinguishing, the thermostatic power is lost at the end of the movable rod 21 by the elasticity of the valve return spring 30. A magnet blocking valve 20 for allowing the fixed sealing member 23 to open the gas passage;

In the thing consisting of the valve housing 40 in which the space part 24 is formed inward so that this magnet shutoff valve 20 may be accommodated;

The valve housing 40 has a gas inlet hole 42 communicating with the space 24 and a gas outlet hole 41 connected to the gas inlet hole 73 of the positive pressure valve 70, so that the magnet shutoff valve 20 is provided. The opening and closing is intermittent by the sealing member 23 of the), and the positive pressure valve 70 is formed in the front surface by forming a receiving space 71 in which the step portion 72 is formed between the passage hole 79 and the gas entry hole 73. The holding paper rod 81 is provided at the portion, and the slide rod 80 having the locking jaw 82 formed at the rear side is elastically installed between the fixtures 84 by the spring 83 and moved through the through hole 79. The slide rod 80 is retracted in the storage space 71 by the gas of the overpressure to short-circuit the contact of the micro switch 90 so as to block the thermal power transmitted to the magnet shutoff valve 20.

Therefore, when an abnormal pressure occurs during the use of the gas container 5, the pressure holding rod 81 formed on the front surface of the gas blocking member 80 is moved to the rear side in the body portion 70 by the overpressure, the micro switch 90 ), And the power supply to the magnet shut-off valve 20 can be cut off to prevent the gas from being supplied to the burner 8.

Therefore, the marketability and safety can be improved.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view showing a state where the overpressure cut-off device of the present invention is installed in a portable gas range.

Figure 2 is an enlarged side view of the main portion showing a state in which the over-pressure shut-off device is installed in the portable gas range by applying the present invention.

3 is an enlarged cross-sectional view of an internal shape of the inventors of the overpressure cut-off device.

In general, the portable gas cooker main body 100 has a hollow container shape so that the gas container 5 can be detachably attached to one of the inner sides of the portable gas cooker main body 100 so as to be connected to the positive pressure valve 70. Is supplied, and it is comprised so that it may burn in the burner 8. As shown in FIG.

For the first ignition, at the same time as the opening and closing operation of the gas regulating knob 65, the pressure piece 55 integrally formed on the back of the gas is forced to pressurize the piezo 9 to generate sparks around the burner 8.

The positive pressure valve 70 is installed between the gas regulating knob 65 and the gas container 5 inside the portable gas cooker main body 100, and the gas supplied into the diaphragm 60 has fluidity by the internal pressure. It has a primary positive pressure function to be supplied to the burner 8 through the gas entrance hole 73 through the passage hole 79 in a state of maintaining a constant pressure state by the ().

Then, the thermocouple 10 is located on one side of the burner 8 to generate thermoelectric power by the heat of combustion of the flame to detect whether the spark is ignited.

The thermocouple 10 generates heat by heat sensing to transfer power necessary for the operation of the magnet shutoff valve 20.

The magnet shut-off valve 20 is provided with a moving rod 21 in the front body portion, the metal piece 22 and the sealing member 23 is fixedly attached to the end of the moving rod 21.

Therefore, when thermoelectric power is generated by heat detection of the thermocouple 10 and transmitted to the magnet cutoff valve 20, an electromagnetic force is formed, and the metal piece 22 and the mounting rod 21 and the end of the magnet cutoff valve 20 are mounted. The sealing member 23 is pulled toward the body to selectively open and close the gas inlet hole 42 formed in the valve housing 40.

The sealing member 23 is preferably used to improve the sealing force when the gas is selectively blocked.

In addition, a valve return spring 30 is positioned between the body side of the magnet shutoff valve 20 and the sealing member 23 to forcibly restore the moving rod 21 when the thermoelectric power is lost.

On the other hand, the magnet blocking valve 20 is installed inside the valve housing 40, the valve housing 40 is formed with a space 24 to accommodate the magnet blocking valve 20 inward, The gas inlet hole 42 is formed at both sides of the space part 24 so that the gas discharge hole 41 is in communication with each other, and the gas inlet hole 42 is provided with a slide hole in a direction opposite to the magnet shutoff valve 20. 43) is drilled.

The push pin 50 is slidably fitted in the slide hole 43 formed in the valve housing 4 so as to forcibly open the gas discharge hole 41 and the gas inlet hole 42 at the time of initial ignition.

The push pin 50 has a locking plate 51 formed at a rear side thereof, and a spring 52 is elastically installed between the outer end of the valve housing 40 and the locking plate 51.

Therefore, when the gas passage in the positive pressure valve 70 is opened when the gas regulating knob 65 is rotated for the first ignition, and the protruding piece 54 integrally formed at the back of the gas regulating knob 65 is rotated together. The rotational force is transmitted to the push pin 50 through the pressing member 53 which has been in contact with the locking plate (51).

The pressing member 53 is formed in the form of a torsion coil spring so that the pressing portion 53a is pushed to the lower end of the body as shown in FIG. 5 so as to move the push pin 50 to the front while rotating. It is formed so as to be perpendicular to the rear side of the locking plate 51 of the 50, the rotating portion 53b is also formed vertically on the other side of the pressing portion (53a).

In addition, the protruding pieces 54 respectively protruding from the body rear side of the gas regulating knob 65 operate the pressure member 53 to supply gas to the burner 8 by moving the push pin 50 forward. The pressing piece 53 protruding at a position shifted from the protruding piece 54 is designed to be in contact with the piezoelectric element 9 at its rotational trajectory.

Accordingly, the gas is supplied to the burner by first rotating the pressure member 53 by rotating the gas adjusting knob 65 to move the push member 53 to the front, and then pressing the piece. 53 pressurizes the piezo 9 to generate sparks and ignite.

The spring 52 to elastically install the push pin 50 is moved to the front by the push pin 50 by the rotation of the gas adjusting knob 65 so that the gas is supplied to the ignition is made, the user adjusts the gas Release of the knob 65 serves to restore the push pin 60 by the restoring force of the spring 52, the end of the moving rod 21 as a result of pressing and moving the push pin (50) The gas inlet hole 42 and the gas outlet hole 41 can be opened by forcibly retracting the sealing member 23 fixed to the cover member 23.

The gas inlet hole 42 communicates with the gas inlet hole 73 of the positive pressure valve 70 so that the gas subjected to the first positive pressure treatment in the positive pressure valve 70 is forced through the gas inlet hole 42. Gas is supplied to the burner 8 via 41, and ignition is possible by ignition.

In addition, the spring 52 elastically installed on the locking plate 51 has the gas regulating knob 65 after the user ignites the burner 8 by forcibly opening the gas passage by rotating the gas regulating knob 65. When the hand is released from, it serves to restore the push pin 50 again.

One side of the positive pressure valve 70 is provided with an adapter 61 which is easy to connect the gas container 5, and induces the leakage of the incoming gas after opening the gas container 5 in the connected state, The diaphragm 60 which has a positive pressure function is installed inside.

The diaphragm 60 is flowed by the pressure when the gas introduced into the positive pressure valve 70 exceeds the set pressure and is moved through the gas entry hole 73 through the passage hole 79. It reduces the amount of gas and automatically adjusts passage opening according to pressure changes.

On the other hand, the gas blocking member 80 is installed inside the positive pressure valve 70 to prevent the gas generated by the overpressure due to overheating of the gas container 5 to the burner 8.

The inside of the positive pressure valve 70 is formed in the penetrating state to accommodate the gas blocking member 80 is formed with a receiving space 71 is formed with a stepped portion 72 on one side, the receiving space 71 and the gas inlet and outlet The hole 73 is opened in communication.

The gas blocking member 80 is assembled in a slidable state in the guide hole 78 of the positive pressure valve 70 extends long to one side and extends to the outside of the body, and the locking jaw (on the other side) 82 is formed to be caught by the stepped portion (72).

In addition, a spring 83 is elastically installed between the fasteners 84 on the rear side of the catching jaw 82, and the fasteners 84 are formed on the outer circumferential surface with a spiral portion 84A formed in the positive pressure valve 70. By fastening the screw hole and the screw is to elastically support the gas blocking member (80).

At the end of the blotting rod 81 extending to one side of the gas blocking member 80, the micro switch 90 is short-circuited while being moved to the rear side by the pressure of the gas when an inflow of gas is applied.

The micro switch 90 is electrically connected to the magnet blocking valve 20 so that the thermoelectric power generated from the thermocouple 10 is normally transmitted to the magnet blocking valve 20 in the contact state, and the positive pressure as described above. When a high pressure is generated due to overheating in the valve 70, the micro switch 90 is short-circuited by moving the gas shutoff member 80 while pressing the elastic force of the spring 83 to move the current to the magnet shutoff valve 20. It serves to block things.

Then, the locking step 82 is to determine the position to be engaged with the stepped portion 72 formed in the inner receiving space 71 of the positive pressure valve (70).

In addition, the fastener 84 adjusts the elasticity of the spring 83 for supporting the gas blocking member 80 from the rear side, when the high pressure is generated from the inside due to overheating of the gas container 5 or the like. 80) is moved to play the role of setting and adjusting the operation timing and the allowable safety pressure standards for sealing the gas supply by blocking the thermoelectric power.

This makes it possible to match the reference pressure of the gas set differently for each manufacturer and country.

That is, when the reference pressure of the gas to be set is set, when the fixing tool 84 is rotated to be tightened by using the spiral portion 84A formed on the body of the fixing tool 84, the spring fitted to the rear side of the gas blocking member 80 ( The elastic force of 83 increases, which increases the force for supporting the gas blocking member 80.

Therefore, the allowable pressure of the gas can be raised.

In addition, when the reference pressure of the gas is lowered, it is possible to reduce the elasticity of the spring 83 by rotating the locator 84 in reverse.

In addition, a packing member 85 is mounted at the central portion of the body of the gas blocking member 80 to maintain the airtightness so that the gas blocking member 80 can be operated under a more accurate pressure.

When the gas container 5 is inadvertently heated when the portable gas cooker main body 100 is used, when the overpressure gas is introduced into the positive pressure valve 70, the pressure acts on the storage space 71. As a result, the gas blocking member 80 supported by the spring 83 retreats.

Therefore, the pressure blocking rod 81 of the gas blocking member 80 is moved to short-circuit the contact of the micro switch 90, and the magnet blocking valve 20 opens the gas passage by the thermoelectric power of the thermocouple 10. To cut off the power supply.

The magnet shut-off valve 20 in which the thermoelectric power is cut off advances the sealing member 23 by the elasticity of the spring 30 to open a connection passage between the gas inlet hole 42 and the gas discharge hole 41 as shown in FIG. 4. As a result of the blocking, the gas of the overpressure supplied to the burner 8 through the gas discharge hole 41 can be blocked.

Therefore, it is possible to prevent explosions and gas accidents.

According to the present invention as described above, when the abnormal pressure is generated in the gas container 5 when the portable gas cooker main body 100 is used, the blotting rod 81 formed on the front surface of the gas blocking member 80 is overpressured by the body portion. While moving to the rear side within 70, the micro switch 90 is separated, which can cut off the power supplied from the thermocouple 10 to the magnet shut-off valve 20 to block the gas from being supplied to the burner (8) will be.

Therefore, it is a very useful invention that can improve the marketability and safety.

Claims (1)

The gas is supplied from the gas container 5 detachably housed on one side by the opening / closing adjustment of the gas regulating knob 65, and the portable gas cooker is sparked around the burner 8 by pressurization of the piezo 9. A main body 100; It is installed between the gas control knob 65 and the gas container 5 inside the portable gas cooker main body 100, and the gas enters and exits through the passage hole 79 at a constant pressure by the diaphragm 60. A positive pressure valve 70 which is supplied to the burner 8 via 73; A thermocouple (10) positioned at one side of the burner (8) of the portable gas stove main body (100) to generate thermoelectric power by the heat of combustion of the flame to sense whether the spark is ignited; The magnetic force is generated by the thermoelectric power generated from the thermocouple 10 to maintain the passage of the gas in an open state, and when extinguishing the end of the movable rod 21 by the elasticity of the valve return spring 30 to the loss of the thermoelectric power A magnet blocking valve 20 for allowing the sealing member 23 fixed to the opening to open the gas passage; In the configuration consisting of a valve housing (40) having a space (24) formed in the inner side to accommodate the magnet shut-off valve (20); The gas inlet hole 42, which communicates with the space 24 of the valve housing 40, and the gas outlet hole 41, which is connected to the gas inlet hole 73 of the positive pressure valve 70, are drilled to provide the magnet shutoff valve 20. The opening and closing is intermittent by the sealing member 23 of the), and the positive pressure valve 70 is formed in the front surface by forming a receiving space 71 in which the step portion 72 is formed between the passage hole 79 and the gas entry hole 73. The pressing rod 81 is provided at the portion, and the slide rod 80 having the locking jaw 82 formed at the rear side is elastically installed between the fixtures 84 by the spring 83 and moved through the through hole 79. The slide rod 80 is retracted in the storage space 71 by the gas of the overpressure to short-circuit the contact of the micro switch 90 so as to block the thermal power transmitted to the magnet shut-off valve 20. Overpressure cut-off device for gas range.