KR200352167Y1 - Apparatus of safe gas range in one united body with lower and higher pressure - Google Patents

Abstract

The present invention relates to safety devices that prevent the gas can from exploding when the pressure in the gas can rises when the portable burner is used. When the internal pressure of the gas can reaches the dangerous expected pressure (5 kg / cm 2), the low pressure spring 17 High pressure spring (18) by the pressure in the gas can when the pressure in the gas can 29 reaches the dangerous pressure (5 ~ 7 kg / ㎠) and the primary safety device for reducing the internal pressure by increasing the discharge amount of the gas while retreating The secondary safety device which blocks the inflow of gas by allowing the gas can 29 to be separated while retreating, and the internal pressure of the separated gas can 29 is increased by radiant heat, so the deformation threshold pressure of the gas can (13 kg / Cm 2 or more), the stem 31 of the gas can 29 protrudes due to the internal pressure, and the stem 31 of the gas can 29 is connected to the gas inlet again, so that gas is introduced and the gas is introduced into the mixing pipe. To the outside through the burner (28) Through the configuration of the third safety device, we propose a safety device that can prevent the gas can from being exploded by internal pressure.

In the present invention, when the internal pressure of the gas can reaches the dangerous expected pressure, the primary safety device according to the low pressure spring, and when the pressure of the gas can reaches the dangerous pressure, the pressure is canceled by the high pressure spring. When the gas can reach, the stem portion of the gas can protrudes, and when the stem of the gas can is mounted at the gas inlet, the gas container is exploded by including a third safety device that discharges the gas to the outside through the burner through the mixing pipe. Can be prevented in advance.

Description

Low pressure and high pressure integrated safety device for gas stove {APPARATUS OF SAFE GAS RANGE IN ONE UNITED BODY WITH LOWER AND HIGHER PRESSURE}

The present invention increases the amount of gas released in the gas can as the low pressure spring retreats when the explosive potential of the gas can reaches, for example, the internal pressure of the gas can reaches the dangerous expected pressure of the gas can, for example about 5 kg / cm 2. The primary safety device to reduce the internal pressure and the high pressure spring retracts due to the pressure in the gas can when the pressure within the gas can reaches a dangerous pressure range, for example, 5-7 kg / cm2. Secondary safety device to block the inflow of gas, and the gas can's strain threshold pressure range, for example, the operation of the secondary gas safety device, despite the operation of the secondary safety device, the internal pressure of the gas can increases due to radiant heat. When the strain threshold pressure (13kg / ㎠ or more) is reached, the stem portion of the gas can is protruded by the internal pressure, and the stem of the gas can is connected to the gas inlet, and gas is introduced into the gas can. Through the burner by including a third safety device for emitting to the outside, to a safety device which can prevent in advance the gas container to explode by the internal pressure.

Generally, as shown in FIG. 1, the portable gas stove may be connected to a burner 100 equipped with a gas ignition device, a detachable device 101 capable of attaching and detaching a gas can 200, and a gas can 200. A gas inlet for the gas can is installed, the gas can mounting unit 103 containing the regulator 102 for controlling the discharge amount of the gas supplied to the burner 100 through the gas inlet, and the case 104 for fixing these parts. ), The burner 100 and the regulator 102 are interconnected by a mixing tube.

These portable gas stoves are often used as cookware for simple cooking of food outdoors or indoors due to light weight and portability, so they may be exploded or fired due to user's carelessness or external heat source (for example, radiant heat). There is always an inherent risk of causing a safety accident.

Therefore, according to the regulations of the Korea Gas Safety Corporation, when the internal pressure of the gas can suddenly rises to an abnormally high pressure in order to prevent the above safety accidents, for example, within a dangerous pressure range (5 to 7 kg / cm 2) (Japan 4 mandatory to provide a safety device to prevent fire by automatically shut off the gas supply of 4 ~ 6kg / ㎠) early.

Conventionally, a flow-blocking safety device has been disclosed to reduce the pressure in a gas can by preventing gas from being discharged to the outside when the internal pressure of the gas container rises above a certain range due to heat. have.

Figure 2 is a front view showing an example of a safety device for a portable gas stove according to the prior art, it shows the flow path blocking.

In more detail, the gas amount regulator 102 has a gas discharge hole 71 formed at one side of the gas passage connected to the gas inlet 79 so as to be connected to the sealing chamber 72, and the sealing chamber 72 is A guide hole 81 is formed at the center by opening the bottom surface, and a sealing shaft 73 corresponding to the guide hole 81 is mounted in the sealing chamber 72, and a locking jaw 74 is disposed at an upper end of the sealing shaft. ) Is formed and the sealing chamber 75 is mounted on the upper surface to correspond to the gas discharge passage 71, and the compression spring 76 is mounted between the lower portion of the locking jaw 74 and the lower cap 83. .

Such a related art relates to the safety device of a portable gas stove when the internal pressure of the gas can is in the range of the expected pressure, for example, 5 kg / cm 2 or more, and when the gas internal pressure approaches 5 kg / cm 2. A car safety device, a secondary safety device in the case of 5 to 7 kg / cm 2, and a deformation threshold pressure range of the gas can, that is, a safety device according to that in the case of more than 13 kg / cm 2 or more, have been inherent in a large accident problem.

In other words, in the prior art, it consists only of a safety device within the pressure range specified in the regulations of the Korea Gas Safety Corporation, and is close to the dangerous pressure range in the initial gas can specified in the regulations of the Korea Gas Safety Corporation. It is not equipped with a safety device to prevent the pressure in the gas can not rise above 5 kg / cm 2 before approaching, so that the gas can unnecessarily escapes from the gas connection.

Furthermore, in the prior art, the gas is discharged to the outside through the discharge groove, and the discharged gas is introduced into another gas stove operating in the vicinity, or discharged to another fire source to cause an unexpected large accident. There is a risk inherent in the probable probability.

The present invention is designed to solve this problem, and the main purpose of the present invention is to reduce the internal pressure by increasing the amount of gas released while the low pressure spring retracts when the internal pressure of the gas can reaches the gas can dangerous risk pressure, that is, 5 kg / cm 2. The primary safety device to stop the gas can by separating the gas can while the high pressure spring retracts due to the pressure in the gas can when the pressure in the gas can reaches a dangerous pressure, that is, 5 to 7 kg / cm 2. When the internal safety of the car safety device and the separated gas can rise due to radiant heat and reach the deformation pressure of the gas can, the stem of the gas can protrudes due to internal pressure, and the stem of the gas can is connected to the gas inlet again. The gas container being exploded by internal pressure by including a tertiary safety device in which the introduced and introduced gas is discharged through the burner to the outside through the burner To provide a safety device that can prevent in advance,

Furthermore, the gas discharged to the outside from the gas discharge pipe is discharged to the burner through the mixing pipe, thereby discharging to the safest place even if the gas is discharged to the outside, and does not discharge the gas to other fire sources around, It is to provide a gas can explosion prevention safety device that can prevent accidents.

1 is a perspective view of a typical portable gas stove,

Figure 2 is a front view showing an example of a safety device of a portable gas stove according to the prior art,

Figure 3 is a perspective view showing the main part of the portable gas stove according to the present invention,

Figure 4a is a longitudinal sectional view showing a safety device of a portable gas stove according to the present invention,

Figure 4b is a longitudinal sectional view showing the operating state of the primary safety device according to the present invention,

Figure 4c is a longitudinal sectional view showing an operating state of the secondary safety device according to the present invention,

Figure 4d is a longitudinal cross-sectional view showing the operating state of the third safety device according to the present invention,

5 is a schematic view showing a modified state of the gas can according to the present invention.

<Description of the code | symbol about the principal part of drawing>

10: gas passage 11: through hole

13: inside passage 14: slider

15: Bottom plate 16: Moving pin

17: low pressure spring 18: high pressure spring

19, 102: regulator 20: gas discharge pipe

21: gas ball 23: O-ring

24: main nozzle 25: housing

26: guide ball 27: mixing tube

28: burner 29: gas can

30: can upper 31: stem

Hereinafter, the low pressure and high pressure integrated safety device for a gas stove according to the present invention will be described in more detail with reference to the accompanying drawings.

Figure 3 is a perspective view showing the main part of the portable gas stove according to the present invention, Figure 4a is a longitudinal sectional view showing a safety device of the portable gas stove according to the present invention, in the safety device of the portable gas stove,

A gas passage 10 formed inside the regulator 19 for gas discharge;

The upper surface is provided with a through-hole 11 made to be connected to one side of the gas flow path 10, the one side has a gas hole 21 formed to be connected to the gas discharge pipe 20 for gas discharge, the lower surface A housing 25 assembled by the lower plate 15 and provided with an inner passage 13 so as to have a lower portion formed to have a larger diameter than an upper portion thereof;

An upper end portion is formed to correspond to the through hole 11, and an outer circumferential surface of the upper end portion is mounted to an O-ring 23 to prevent fluid from entering and exiting the gas flow path 10, and a low pressure spring between the upper end portion and the lower plate 15. 17 is provided to be elastically operated by the gas pressure, the high pressure between the lower surface and the lower plate 15 of the slider 14 corresponding to the upper end and the lower end of the housing 25 to operate freely by the gas pressure A spring 18 is provided to be elastically operated by a relatively high gas pressure, and a movable pin 16 having a lower end to freely operate the guide hole 26 formed in the lower plate 15;

Regarding the low pressure and high pressure integrated safety device of the stove, which is connected to the gas hole 21 to discharge the gas pressure of the regulator 19 to the outside, and includes a gas discharge pipe 20 connected to one side of the mixing pipe 27. will be.

The control method is a primary safety device that prevents the gas can from explosion when the internal pressure of the gas can approaches the dangerous expected pressure, and separates the gas can when the gas can rises to the dangerous pressure of the gas can. The secondary safety device for blocking and the third safety device for canceling the pressure when the deformation threshold of the gas can is reached will be described separately.

For reference, the gas can dangerous anticipated pressure, the dangerous pressure, and the critical pressure of deformation are defined in the present specification because a variable may occur in the pressure rise factor in the gas can for each country according to the temperature range of the room temperature. Although not described in a limiting sense, the internal pressure range of the gas can for each safety device is 5 kg / ㎠, the dangerous pressure is 5-7 kg / ㎠, and the critical pressure of deformation is 13 kg / ㎠ or more. It is assumed to explain.

<First safety device>

First, Figure 4b is a longitudinal cross-sectional view showing the operating state of the primary safety device according to the present invention, when it is described, when the internal pressure of the body approaches the explosion risk expected pressure, burned by the low pressure spring (17) The movable pin 16, which is sexually supported, is retracted to open the through hole 11, and gas is introduced into the mixing pipe 27 through the gas discharge pipe 20 and attached to one side of the mixing pipe 27. A combustion step of continuously supplying gas to the burner 28 together with the main nozzle 24.

This means that when the internal pressure of the gas can approaches 5 kg / cm 2, the gas can not be reached in advance before the dangerous pressure range of 5-7 kg / cm 2, which is defined by the Korea Gas Safety Corporation, is reached. The gas is discharged to the burner through the mixing pipe through the discharge pipe (20).

At this time, the burner 28 increases the amount of gas discharged through the gas discharge pipe 20 together with the main nozzle 24, and causes more combustion than the normal combustion.

In the combustion step, since the amount of gas discharged is greater than that of the normal combustion step, the cooling rate of the gas can is rapidly increased, so that the internal pressure of the gas can is sharply lowered to reduce the pressure of the gas can;

Moving the movable pin 16 by the force of the low pressure spring 17 to block the inlet of the through hole 11 when the internal gas pressure of the gas can is below a dangerous expected pressure range;

Opening the through hole 11 when the internal gas pressure is higher than the expected dangerous pressure;

If the risk is below the expected pressure range, the step of repeating the process of closing the through hole 11 by the movable pin again.

This repetitive operation prevents the gas can internal gas pressure from reaching the dangerous pressure range in advance.

<Secondary safety device>

Second, Figure 4c is a longitudinal cross-sectional view showing the operating state of the secondary safety device according to the present invention, when explaining this, the internal pressure of the gas can is increased during the use of the portable gas stove despite the operation of the primary safety device When the dangerous pressure (5 ~ 7kg / ㎠) is reached, the movable pin 16, which is elastically supported by the low pressure spring (17) is lowered;

The slider 14 mounted on the inner passage 13 is moved by the high pressure spring 18, thereby compressing the high pressure spring 18 mounted on the bottom surface of the slider 14, thereby compressing the movable pin 16. ) Projecting out of the guide hole 26;

The movable pin 16 operates the gas can 29 separating device (not shown) to release the gas can 29 from the regulator 19.

Although the gas can separating device is not shown, the gas can operates in a normal state so that the gas can is not separated. However, when the gas pressure rises to the dangerous pressure (5 to 7 kg / cm 2) as described above, the gas can be separated by the falling load of the movable pin 16. While the can separating device is interlocked, the gas can 29 is forcibly separated, and the gas can separating device is interlocked by pressing the lever of the gas can separating device as the end of the movable pin 16 descends. By this, the gas can 29 is separated from the regulator 19 at an instant.

<3rd safety device>

Third, Figure 4d is a longitudinal cross-sectional view showing the operating state of the third safety device according to the present invention, Figure 5 is a schematic view showing a deformation state of the gas can according to the present invention, when it is described, separated from the regulator 19 When heat is applied from the gas can 29, the internal gas of the gas can 29 expands, and when the gas can reaches the strain threshold pressure (13 kg / cm 2 or more) due to internal pressure, the upper portion of the gas can 29 pops out and the gas The stem 31 portion of the can 29 is connected to the inlet of the regulator 19;

While the movable pin 16 is lowered by the expanded gas pressure, the low pressure and high pressure springs 17 and 18 are compressed to expand the gas discharge pipe 20 formed on one side of the inner passage 13 while the expanded internal gas of the gas can is compressed. Through the mixing pipe 27 through the step is discharged to the burner (28).

When the internal pressure of the gas can 29 reaches a deformation threshold pressure of 13 kg / cm 2 or more, the gas of the gas can 29 is expanded and expands first from the upper portion 30 of the gas can 29. The stem 31 of the gas can 29 is mounted in the inlet.

Therefore, the gas inside the gas can 29 is introduced into the body again through the gas inlet, and the gas pressure introduced at this time is 13 kg / cm 2 or more, so that the low pressure and high pressure springs mounted on the movable pin 16 are provided. (17) (18) are compressed at the same time.

As the low pressure spring 17 is compressed to open the through hole 11, the gas is discharged through the gas discharge pipe 20 to the burner 28 through the mixing pipe 27 to lower the internal pressure of the gas can 29. The explosion of the gas can 29 can be prevented in advance.

As described above, the low and high pressure integrated safety device of the gas stove according to the present invention has a primary safety device (risk pressure range of the gas can), a secondary safety device (risk pressure range of the gas can), and a third safety device ( The critical pressure range of the gas can is formed integrally to provide a simple and convenient gas safety device. Also, the gas can be discharged from the safest place by discharging it through the burner through the mixing pipe when discharging the internal gas to the outside. It is to discharge, the discharged gas pressure is sharply lowered due to the flow path resistance to provide the advantage that the gas does not reach the far distance.

Furthermore, since the primary safety device, the secondary safety device and the tertiary safety device are integrally formed, the overall number of parts is reduced and the safety device of the portable gas stove can be provided to improve the assembly and productivity.

Claims (1)

In the safety device of a portable stove, A gas passage 10 formed inside the regulator 19 for gas discharge; The upper surface is provided with a through-hole (1l) is formed to be connected to one side of the gas passage 10, the one side has a gas hole 21 formed to be connected to the gas discharge pipe 20 for gas discharge, the lower surface A housing 25 assembled by the lower plate 15 and provided with an inner passage 13 so as to have a lower portion formed to have a diameter larger than an upper portion thereof; An upper end portion is formed to correspond to the through hole 11, and an outer circumferential surface of the upper end portion is mounted to an O-ring 23 to prevent fluid from entering and exiting the gas flow path 10, and a low pressure spring between the upper end portion and the lower plate 15. 17 is provided to be elastically operated by the gas pressure, the high pressure between the lower surface and the lower plate 15 of the slider 14 corresponding to the upper end and the lower end of the housing 25 to operate freely by the gas pressure A spring 18 is provided to be elastically operated by a relatively high gas pressure, and a movable pin 16 having a lower end to freely operate the guide hole 26 formed in the lower plate 15; Is connected to the gas hole (2l) to discharge the gas pressure of the regulator 19 to the outside is connected to one side of the mixing pipe 27, characterized in that it comprises a gas discharge pipe 20 for discharging to the burner 28 Low and high pressure integrated safety device for gas stove.