JPH04122930U - Abnormal pressure safety device for Cassette stove - Google Patents

Abstract

(57) [Summary] [Purpose] When the supply gas pressure becomes abnormal, the gas is automatically shut off and at the same time an acoustic warning is issued to notify the user that such a situation has occurred, thereby improving operational safety. The purpose is to ensure that the [Structure] A gas cutoff mechanism 41 that cuts off the gas supply line 3 in response to abnormal pressure in the gas supply line 3 to a gas burner to which a gas cylinder is connected; The present invention is characterized in that it includes a warning means 101 that emits a warning sound.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention uses a loaded gas cylinder connected to the gas supply path to the gas burner. When using a cassette controller, if the supply gas becomes abnormally high pressure due to overheating of the gas cylinder, etc. This relates to a safety device that ensures safety by stopping the gas supply.

0002

[Conventional technology]

This type of device is disclosed in Utility Model Application Publication No. 59-54300, which was previously proposed by the present applicant. etc. is known.

0003 This device shuts off the gas supply path in response to abnormal pressure in the supplied gas. It has a safety mechanism. Therefore, when using the stove, the gas cylinder may overheat and become abnormal. Even if the pressure increases and the supply gas pressure becomes abnormal, the safety mechanism will shut off the gas supply path. After that, the gas supply will be stopped and the cassette stove will automatically extinguish the fire. did Therefore, the gas cylinder is not heated any further and the pressure is gradually reduced. It is possible to avoid a situation in which the chamber explodes due to increased pressure.

0004

[Problem that the idea aims to solve]

However, the conventional safety mechanism alone cannot be said to be completely reliable. For example, a cassette The stove is easy to handle and use, so it can be used by many people at outdoor Yakiniku parties etc. When using multiple cassette stoves, place two or more cassette stoves side by side and place a large one on top of them. Things like putting an iron plate on the ground are carried out.

[0005] In such a case, abnormal pressure will occur in one cassette stove and the safety mechanism will activate. Even if the fire is extinguished, other cassette stoves continue to burn normally, so It is difficult to notice that the fire is extinguished due to abnormal pressure on the set stove.

[0006] In such a situation, the gas under abnormal pressure in the extinguished cassette stove The cylinder is heated by combustion heat from another cassette stove or by another cassette stove. Because it continues to be exposed to copying heat etc. from the iron plate that continues to be heated, it is further heated and the pressure increases. There is a risk of explosion.

[0007] Therefore, the present invention allows users to use the cassette stove even in the above-mentioned usage conditions. A case that can easily detect fire extinguishing caused by abnormal pressure and prevent the above-mentioned dangers. The object of the present invention is to provide an abnormal pressure safety device for hot stoves.

[0008]

[Means to solve the problem]

In order to achieve the above-mentioned problems, the first invention of the present application is to connect a gas cylinder. Gas shutoff that shuts off the gas supply path in response to abnormal pressure in the gas supply path to the gas burner mechanism, and a warning that emits a warning sound in response to the gas supply path cutoff operation of this gas cutoff mechanism. It is characterized by comprising means.

[0009] The second invention of the present application further includes a gas cutoff mechanism in the gas supply path in the first invention. A gas that causes the return to the open state and cancels the warning of the warning means in response. It is characterized by being equipped with means for shutting off and canceling warnings.

0010

[Effect]

According to the above configuration of the first invention of the present application, when using the cassette stove, the gas cylinder is When the supply gas pressure increases due to overheating, etc., and the supply gas becomes abnormal pressure, the gas cutoff mechanism operates and the gas shuts off. Since the gas supply route is cut off, further gas supply is cut off and the fire is extinguished. In addition, the warning means works in response to the gas supply path cutoff operation of this gas cutoff mechanism. If you cannot see the cassette stove you are using, or if the person using it is The abnormality can be reliably notified to the user even if the user is far away from the user.

[0011] According to the above configuration of the second invention of the present application, the first invention further includes gas cutoff, By activating the warning release means, the gas cutoff mechanism returns to the gas supply path open state. The warning of the warning means is canceled in response to this, so the gas cutoff mechanism and The warning and warning means will continue to work unless operated by humans, so they will not stop working inadvertently. Safety is improved without any problems.

0012

【Example】

To explain the embodiments shown in FIGS. 1 to 6, 1 is a box-shaped container. A burner chamber 19 in which the gas burner 2 is installed and a gas supply to the burner 2. The cylinder connection port 4 of the passage 3 faces, and a small capacity gas cylinder 5 that is attached to and detached from the connection port 4 is installed. A cylinder chamber 6 into which cylinders are taken in and taken out is formed next to each other.

[0013] A device cock 7 and a gas pressure regulator 8 are connected to the gas supply path 3 from the burner 2 side. are set up in sequence. The gas pressure regulator 8 has a cylinder connection port 4 integrally formed therein. It is considered to be an Ikast product, and there is a cylinder connection port on the front side of the container 1 in the cylinder chamber 6. 4 is installed facing the rear side of the vessel body 1, and is integrated with the device cock 7 made of the same die-cast product. The device block 71 is fixed to the bottom plate 6a of the cylinder chamber 6 with screws 72, etc. has been done.

[0014] The gas cylinder 5 has a nozzle 9 protruding from a small-diameter protrusion 5a at its tip so that it can move forward and backward. It opens and closes in conjunction with the movement of the nozzle 9 into and out of the cylinder 5 into the radial protrusion 5a. A gas outlet valve 10 is provided.

[0015] On the other hand, the cylinder connection port 4 connects the small-diameter protrusion 5a of the cylinder 5 with the O-ring 11 on the inner circumference. with an auxiliary seal at the outermost position of the connection port 4 and a cylinder. There is a cylinder holding hole 12 that firmly holds the cylinder 5, and a cylinder holding hole 12 that firmly holds the cylinder. A nozzle receiving hole 13 having a small diameter and concentrically opened is provided in two stages.

[0016] The nozzle 9 of the cylinder 5 is tightly fitted into the nozzle receiving hole 13 via an O-ring 14 on the inner circumference. This forms an inner seal, and the nozzle of the nozzle 9 is normally closed by the force of a spring 15 in the inner part. A normally closed check valve 16 is provided that is pushed open by entering the slurry receiving hole 13. (Figure 4).

[0017] An annular step portion 17 is formed between the cylinder holding hole 12 and the nozzle receiving hole 13. This is formed into an inclined guide surface that slopes inward from the outer diameter side to the inner diameter side. .

[0018] As a result, the gas cylinder 5 fitted into the cylinder chamber 6 is moved to the bottom of the cylinder chamber 6. The cylinder is released by forward operation of the cylinder pressing slide member 18, which is provided so as to be able to slide forward and backward. When the nozzle 9 is press-connected to the connection port 4, in the unlikely event that the nozzle 9 gets caught on the annular surface stepped portion 17. However, the slope guides the nozzle into the nozzle receiving hole 13, and this slipping It automatically fits into the nozzle receiving hole 13 due to the action, and connection failures like conventional ones do not occur. stomach.

[0019] The cylinder pressing slide member 18 is pressed against the lower surface of the bottom plate 6a of the cylinder chamber 6. Then, both ends 18a and 18b are placed on the bottom plate 6a through the windows 20 in two places on the front and back of the bottom plate 6a. One side cover plate 73 of the pressure regulator 8 is placed on the front end 18a of the pressure regulator 8. A cylinder set lever 22 pivotally supported on a cylinder shaft 21 is connected to an arcuate cam hole 23 and a shaft 24. They are connected through engagement and can be moved back and forth by rotating the lever 22. Ru.

[0020] The lever 22 has an operating portion 22a formed in a vertical slit 25 formed on the front surface of the vessel body 1. The cylinder pressing slide member 18 and the bottom plate 6a are made to protrude more outwardly and are raised. The cylinder pressing slide member 18 is moved by the spring 26 acting between the strainer piece 6b and the cylinder pressing slide member 18. At the same time, it is biased in a direction to release the pressure on the cylinder 5.

[0021] The connection by engagement between the cam hole 23 and the shaft 24 causes the lever 22 to resist the spring 26. When the cylinder press slide member 18 is operated in the cylinder press connection direction (downward), This part is moved forward while applying a lifting force to it. By moving the material 18 forward, the cylinder 5 is pushed by the upward pressing piece 18c at the rear end. The connector is pushed toward the connection port 4 for connection.

[0022] In this connected state, the shaft 24 does not engage with the engagement recess 27 on the side edge of the end of the cam hole 23. As a result, the operating lever 22 is moved together with the cylinder pressing slide member 18 to the button of the spring 26. It is rather stabilized by biasing it in the direction of releasing pressure. child The stability of the cylinder nozzle 9 and the cylinder connection port check valve 16 are stable even without the spring 26. The force acting in the direction of disconnecting the cylinder is sufficient.

[0023] The cylinder pressing slide member 18 has a passive end with respect to the cylinder set lever 22. A bend is formed on the side edge of the front end portion 18a opposite to the gas burner 2 side. The rising driven piece 18a has the shaft 24, and the actuating end of the cylinder set lever 22 It is engaged with a cam hole 23 opened in the section.

[0024] Then, the passive piece 18a faces and slides against the lower part of the gas pressure regulator 8, and applies the lifting force. The cylinder is moved by being guided while being moved in the pressing connection direction. Adjust the perpendicular distance of the route line to the cylinder set lever pivot point on the gas pressure regulator 8. It is maintained at the same level, and the operation of the cylinder press connection direction by the cylinder set lever 22 is not avoided. The cylinder pressure connection direction, which requires a large amount of operating force, can be operated efficiently. This is achieved safely and reliably, and there is no discomfort during operation.

[0025] The gas pressure regulator 8 has a plurality of legs 8e, which are integrally vertically provided on the bottom surface 8d, on the bottom plate 6a. It is fixed by a screw 72 inserted from below, and the bottom surface 8d is fixed to the bottom plate 6a. The front end portion 1 of the cylinder pressing slide member is placed between the bottom surface 8d and the bottom plate 6a at the part floating from the bottom. 1a is sandwiched. This front end portion 18a is in sliding contact with the upper surface of the bottom plate 6a and , has an escape window 18e for the leg 8e, and the edge of the escape window 18e is located at the lower end of the leg 8e. By slidingly contacting the downward step 8f formed on the outer periphery of the cylinder, the cylinder pressure connection direction can be controlled. During operation, the front end portion 18a is guided by the gas pressure regulator 8.

[0026] Further, when operating in the direction of releasing the cylinder pressure, the front end portion 18a is connected to the cylinder set lever 2. The cylinder will be moved in the direction of releasing pressure while receiving the downward force from 2. , the cylinder pressing slide member 18 is biased in the direction of its movement. Move and reduce the push-down force to a level where it has no effect. In the event of a large push-down force Even if the Since it is firmly guided by the part attracted to the regulator 8, it will not respond to the operating force. No escape occurs.

[0027] The gas pressure regulator 8 is connected to the cylinder on the side opposite to the gas burner 2 side. A cylinder set lever is provided on the side opposite to the gas burner 2 side. 22, the center line of the cylinder connection port 4 can be seen from the plane. The connection point of the lever 22 to the matching cylinder pressing slide member 18 is the member 1. 8, and in order to transmit the operating force from the lever 22 to the member 18, It is possible to prevent the member 18 from twisting or wobbling in the horizontal direction.

[0028] On the front side of the gas pressure regulator 8, there is an operating shaft 28 of the instrument cock and a front side of the gas pressure regulator 8. The cylinder set is held by fitting the elongated holes 30 and 31 into the protruding shaft 29 of the cylinder so that it can move left and right. A stopper 32 is provided. The stopper 32 is connected to the gas pressure regulator 8. A protrusion 33 formed on the front surface to fit into the elongated hole 31 and a protrusion 33 formed in the elongated hole 31 Biased to the right in FIGS. 1 to 3 by a spring 34 stretched between the left edge and the left edge. be done.

[0029] Due to the rightward movement due to this bias, the tip locking portion 32a is moved along the lower movement track of the cylinder set lever 22. The downward movement of the lever 22 enters the trace and connects the cylinder 5 to the cylinder connection port 4 by pressing. It is designed to prevent operation, that is, cylinder setting operation.

[0030] The stopper 32 has a protrusion formed on the back side of the operating knob 35 of the instrument cock 7. A passive bending piece 37 is formed opposite the riser 36. The passive bending piece 37 is When the bushing 35 is returning to the extinguishing position, it is pushed to the left by the projection 36. , the stopper 32 is stabilized in the leftward movement position, and the tip locking portion 32a is attached to the operating lever 22. The control knob 35 is moved out of the downward movement trajectory, and the cock 7 is not opened even slightly. When the passive bending piece 37 is in the operating position, the push by the protrusion 36 is released and the The par 32 is moved to the right by a spring 34.

[0031] As a result, the cylinder set operation using the cylinder set lever 22 is performed using the instrument cock. This is possible when the operating knob 35 is in the extinguishing position, that is, when the appliance cock 7 is closed. However, when the operating knob 35 is in the open position, the cylinder set The operator was prevented from operating the cylinder 5 without knowing that the device cock 7 was open. By connecting to the burner connection port 4, the gas will flow from the burner 2 at the same time as the connection. To eliminate the inconvenience of inadvertent leakage of information.

[0032] The gas pressure regulator 8 has a primary side chamber 8a communicating with the cylinder connection port 4 side of the gas supply path 3. and a secondary side chamber 8b that communicates with the appliance cock 7 and the burner 2 side are 38, and the gas outlet 8c from the primary side chamber 8a to the secondary side chamber 8b is A valve 40 at the tip of the lever 39 interlocked with the diaphragm 38 opens the primary side chamber 8a. The opening degree is adjusted according to the supply gas pressure from the cylinder 5 acting inside the secondary chamber 8b. Gas at a constant pressure always flows into the burner 2 and is supplied to the burner 2.

[0033] The gas cylinder 5 cools because the heat of vaporization is taken away when the liquefied gas flows out and vaporizes. In order to provide a stable gas supply, it receives the combustion heat from burner 2 and maintains the room temperature. The combustion conditions, outside temperature, radiant heat from the iron plate, direct sunlight, etc. Depending on the usage conditions, the temperature may rise excessively.

[0034] Such an excessive temperature rise will abnormally increase the internal pressure of the cylinder 5 and cause the gas pressure regulator 8 to adjust. Exceeding the pressure capacity may cause abnormal combustion or cause a cylinder explosion. Very dangerous. Therefore, the gas pressure regulator 8 is notified that the gas supplied from the cylinder 5 is abnormal. When the pressure is high, the gas supply path 3 is closed to stop the gas supply to the burner 2, and the An abnormal pressure safety mechanism 41 prevents the burner 5 from receiving combustion heat from the burner 2. It is provided.

[0035] The gas cutoff mechanism 41 includes a pilot passage 42 branched from the primary side of the gas supply passage 3. The pressure sensitive chamber 43 introduces the primary gas before pressure regulation through the pressure sensitive chamber 43, and the secondary gas supply path 3 after pressure regulation. A diaphragm 45 separates the valve chamber 44 provided in the section through which the next gas passes. In addition, a valve chamber 44 side of the diaphragm 45 is attached with the diaphragm 45 and communicates with the diaphragm 45. A reversing spring 46 is provided in a convex curved state toward the normal pressure sensitive chamber 43 side.

[0036] Due to the biasing force of the spring 47 in the valve chamber 44, the reversal spring 46 is in the normal position. The end 48a is pressed and kept in the open state away from the valve seat 49 in the middle of the gas supply path 3. A normally open valve body 48 is provided, and when abnormal pressure of the supply gas acts on the pressure sensitive chamber 43, the diamond The flamm 45 is pressed toward the valve chamber 44, causing the reversal spring 46 to curve toward the valve chamber 44. This reversal of the reversing spring 46 causes the valve body 48 to resist the bias of the spring 47 and close the valve. It is pressed against the seat 49 to close the gas supply path 3.

[0037] Reference numeral 50 denotes an O-ring attached to the seating portion of the valve body 48 against the valve seat 49.

[0038] A valve body 48 is located on the opposite side of the valve chamber 44 from the pressure sensitive chamber 43 and has an axis that is perpendicular to the protruding shaft 21. A reset rod 51, which runs vertically through the center and has an operating portion 51a protruding to the outside at one end, is freely rotatable. It is inlaid and retained. The reset rod 51 has the other end 51b facing the other end 48b of the valve body 48. A facing cam portion 51c is formed. The cam part 51c has a circular shaft cut out from both sides. It has a flat shape.

[0039] A passive lever 52 is attached to one end 51a of the reset rod 51 as a non-circular shaft. The lifting protrusion 22b of the cylinder set lever 22 engages the passive window 52a at the tip of the cylinder set lever 22. By doing so, the lever 22 and the passive lever 52 are made to rotate integrally. .

[0040] 1 to 6 show the gas cylinder 5 in a reset state. In this state, the The engine set lever 22 is stabilized at the rotational position shown in the figure, with its operating portion 22a at its highest position. ing. This stability is achieved when the cylinder pressing slide member 18 is in the retracted position due to the bias of the spring 26. As the cylinder is moved, a rotational force is applied to the cylinder set lever 22 via the shaft 24 and the cam hole 23. This is due to the positional relationship that does not affect

At this time, the reset rod 51 is rotated together with the cylinder set lever 22 via the passive lever 52, so that the scraped surface _51c1 of the cam portion 51 is oriented horizontally (solid line in FIGS. 2 and 6). Therefore, the non-scraped surface 51c ₂ of the cam portion 51 of the reset rod 51 faces the other end 48b of the valve body 48. The non-scraped surface _51c2 is the outer diameter surface of the reset rod 51, and the distance from the center of the reset rod 51 is much larger than that of the chiseled surface _51c1 . Therefore, the non-scraped surface _51c2 contacts or is in close proximity to the other end 48b of the normally open valve body 48 which is pressed by the spring 47 to the reversing spring 46 which is curved convexly toward the pressure sensitive chamber 43 side and is in the open position. (solid line in Figure 2).

[0042] When the cylinder is not set as described above, the cylinder set lever 22 is moved as shown in Figure 6. Move the cylinder pressing slide member 18 forward in the direction of the arrow to remove the cylinder. 5 is set, the reset rod 51 also sets the cylinder via the passive lever 52. It is rotated together with the lever 22 and rotated approximately 90 degrees. This will reset the reset rod 51. As shown by the imaginary lines in FIGS. 2 and 6, the cam portion 51 is configured to The direction can be changed by almost 90 degrees.

[0043] As a result, the cam portion 51 of the reset rod 51 has its shaved surface _51c1 facing the other end 48b of the normally open valve body 48. This scraped surface 51c ₁ is obtained by scraping off the outer diameter surface of the reset rod 51, and the distance from the center line of the reset rod 51 is smaller than that of the unscraped surface 51c ₂ , so it is indicated by the virtual line in FIG. As shown, a space S necessary and sufficient for the normally open valve body 48 to close is created between the normally open valve body 48 and the other end 48b.

[0044] Normally, the normally open valve body 48 has a reversing spring 46 and a spring 47, which are curved in a convex manner toward the pressure sensitive chamber 43. in the open position, pressed against the On the other hand, the reversal spring 46 is set by the cylinder 5. If the gas pressure rises abnormally for some reason while the gas is being used, the The valve chamber 44 is then reversed into a convex curved state, and the normally open valve body 48 is moved back against the spring 47. try

[0045] At this time, the above-mentioned screw is inserted between the other end 48a of the normally open valve body 48 and the cam portion 51c of the reset rod 51. Since the pace S is occurring, the normally open valve body 48 can be retracted and the reaction of the reversing spring 46 It does not interfere with the rolling action, and is retracted to the closed position by the reversing action of the reversing spring 46, preventing abnormal lifting. It is possible to prevent gas from flowing out after the pressure is applied, thereby ensuring safety in use.

[0046] Once the reversal spring 46 is reversed to a convex curved state toward the valve chamber 44 side, it will not return to its original shape. It does not return to the curved state convex to the pressure chamber 43 side. Therefore, it is impossible to resume use.

[0047] To return the reversing spring 46, a reset operation using the reset rod 51 is performed.

[0048] This will be explained. Move the cylinder set lever 22 up to the cylinder set position as shown. Bring it back. At this time, the reset rod 51 is also rotated together with the reset rod 51, and the It is moved back to the position of the line.

[0049] As a result, the cam portion 51 of the reset rod 51 has its non-scraped surface _51c2 facing the other end 48b of the reset rod 51, and is closer to the space S than the scraped surface _51c1 . The normally open valve body 48 is pushed toward the reversing spring 46 by the amount of the normally open valve body 48 .

[0050] At this time, the normally open valve body 48 rotates the reversal spring 46, which has been reversed into a convex curved state toward the valve chamber 44 side. , to return the reversal spring 46 to the convex curved state toward the pressure sensitive chamber 43 side. let In this state, move the cylinder set lever 22 downward to set the cylinder 5. Then, the device enters the normal usage state shown by the virtual lines in FIGS. 2 and 6 described above.

[0051] In the figure, 53 is a mounting screw for the stopper 32, and 54 is a retaining snap for the passive lever 52. It is ng.

[0052] Furthermore, the burner 2 has an annular gas receiving chamber 55 opened upward at the upper end. Fit the main body 2a into the upward opening part 55a of the annular gas receiving chamber 55 of the main body 2a and tighten the screws. It consists of a head 2b which forms an outer flame hole 57 between the main body 2a which is fixed 56, and the head 2b. is provided with an inner flame hole 57a. The main body 2a has an annular gas receiving chamber 55 at the bottom thereof. A mixing tube 58 communicating with 55 is integrally formed.

[0053] The mixing pipe 58 is arranged so as to cross the lower part of the main body 2a so that the amount of protrusion from the main body 2a is small. The gas supply path 3 is provided with a sufficiently long length and protrudes from the main body 2a. The diameter gradually increases from the connecting end 58a with the annular gas receiving chamber 55 to the communicating part 58b with the annular gas receiving chamber 55. In this long mixing tube 58 with a gradually increasing diameter, the supply gas to the burner 2 is 58b, while the force is weakened to the extent that the connection end 58a has sufficient contact with the outside air sucked under negative pressure. mixed.

[0054] In addition, the communication part 58b of the mixing pipe 58 with the gas receiving chamber 55 is , the ignition plug 59 of the burner outer flame hole 57 is far away from the ignition position that is located close to it. The outflow of the supply gas from the outer flame hole 57 at the ignition position is controlled by the outflow from other parts. The ignition operation is delayed by that amount.

[0055] This may cause a slight delay in ignition, or the ignition may not ignite when the cock is opened for the first time. When I noticed this, I had to hastily open the cock to ignite the fire. There are some inconveniences. In order to solve this problem, a mixture is placed on the ignition side of main body 2a. A bypass path 60 is formed from the pipe 58 to the gas receiving chamber 55, and gas from the flame hole 57 outside the ignition section is formed. This speeds up the outflow and prevents delays in ignition.

[0056] 61 is a lid that closes the molding hole 58c for forming the mixing tube 58, 62 is a soup saucer, 63 is a trivet, and 64 is a bottle. 65 is a pivot of the lid 64, and 66 is an air intake passage for the internal flame of the burner 2.

[0057] Furthermore, an abnormal pressure warning means 101 is provided which works simultaneously with the gas cutoff mechanism 41. . The abnormal pressure warning means 101 uses a buzzer 102 as a warning device. buzzer 102 is attached to the bottom plate 103 of the vessel body 1 with screws 104, and the gas cutoff mechanism 41 It is operated by a switch 105 that is turned on in conjunction with the gas supply path cutoff operation.

[0058] 106 is a power source for the buzzer 102. The power supply 106 also has screws 1 on the bottom plate 103 of the vessel body 1. It is installed by 08.

[0059] The switch 105 is a rim-shaped wall integrally formed below the valve chamber 44 of the gas cutoff mechanism 41. 109 with screws 111. This switch 10 is installed in the valve chamber 44. A switch operating rod 112 is provided opposite to 5.

[0060] The switch operating rod 112 is pressed against the narrow diameter portion 113 of the normally open valve body 48 by a spring 114. When the normally open valve body 48 is operated to shut off the gas supply path 3, the normally open valve body 48 is When the switch 105 is turned on in response to the stepped portion 115 following the narrow diameter portion 113. I try to do that.

[0061] The on operation of this switch 105 is maintained until the gas cutoff mechanism 41 is reset. The buzzer 102 continues to emit a warning sound. Therefore, users are required to take measures for abnormal situations. can be quickly and reliably placed.

[0062] The switch 105 may be configured to directly respond to abnormal gas pressure in the gas supply path 3. In this case, the gas cylinder 5 is disconnected or the gas cylinder 5 is removed. The buzzer 102 continues to operate until the abnormal pressure is resolved by lowering the temperature and pressure. It turns out.

[0063] In addition, other suitable devices other than a buzzer can be used to generate the warning sound. In some cases, a display indicating abnormal pressure occurrence or necessary measures may be lit at the same time. You can also let Furthermore, the warning sound can also be made into a voice. In this case as well, a warning and measures will be taken. can be expressed.

[0064] Further, a means for independently canceling the warning may be provided. Abnormal in this case After confirming that pressure is generated, immediately turn off the warning sound to prevent noise. This is advantageous and allows for more time to respond to abnormal pressure.

[0065]

[Effect of the idea]

According to the first invention of the present application, when using a cassette stove, the gas cylinder may become overheated. When the pressure increases further and the supply gas reaches abnormal pressure, the gas cutoff mechanism operates and closes the gas supply path. This will cut off further gas supply, allowing the fire to be extinguished and the bar to be shut off. This can prevent the gas cylinder from exploding due to continued combustion of the fuel.

[0066] In addition, a warning means is activated in response to the gas supply path cutoff operation of this gas cutoff mechanism. If the cassette stove in use is not visible or the user is away from it. Even if the device is being used in conjunction with other It is said that the gas cylinder continues to be heated further due to the heat effect of the cassette stove, etc. It is also possible to reliably avoid the dangers that may arise.

[0067] According to the above configuration of the second invention of the present application, the first invention further includes gas cutoff, By activating the warning release means, the gas cutoff mechanism returns to the gas supply path open state. The warning of the warning means is canceled in response to this, so the gas cutoff mechanism and The warning and warning means will continue to work unless operated by humans, so they will not stop working inadvertently. Safety is improved without any problems.

[Brief explanation of drawings]

FIG. 1 is a partially sectional plan view of a cassette stove as an embodiment of the present invention.

FIG. 2 is a partial plan view showing a half section of a main part of the cassette cooktop shown in FIG. 1;

3 is a cross-sectional front view of the cylinder setting mechanism of the cassette stove in FIG. 1; FIG.

FIG. 4 is a partially sectional side view of the cassette cooktop in FIG. 1;

FIG. 5 is a partial cross-sectional view showing the relationship between the gas cutoff mechanism and a switch for warning in the event of abnormal pressure.

FIG. 6 is a partially exploded perspective view showing the relationship between the gas cutoff mechanism and a switch for warning in the event of abnormal pressure.

[Explanation of symbols]

2 gas burner 3 Gas supply path 4 Cylinder connection port 5 Small capacity gas cylinder 6 Cylinder room 18 Cylinder pressure slide member 22 Cylinder set lever 41 Gas cutoff mechanism 44 Valve chamber 48 Normally open valve body 51 Reset rod 51c cam part 101 Abnormal pressure warning means 102 Buzzer 105 switch 106 Power supply 112 Switch operation means 115 Step part

Claims (2)

[Scope of utility model registration request] Claim 1: A gas cutoff mechanism that cuts off the gas supply line in response to abnormal pressure in the gas supply line to a gas burner to which a gas cylinder is connected, and a warning in response to the gas supply line cutoff operation of the gas cutoff mechanism. An abnormal pressure safety device for a cassette stove, characterized by comprising a warning means that emits a sound. 2. The abnormal pressure safety device for a cassette stove according to claim 1, further comprising a gas cutoff/warning release means for returning the gas cutoff mechanism to the gas supply path open state and canceling the warning of the warning means in response to the gas cutoff mechanism. Device.