KR200352164Y1 - Apparatus of safe gas range in separated body with lower and higher pressure - Google Patents

Abstract

The present invention relates to safety devices that prevent the gas can from exploding due to an increase in the pressure in the gas can when the portable burner is used. In particular, the low pressure and high pressure springs are separated to operate independently or simultaneously according to the gas pressure acting on the gas flow path. The present invention relates to a safety device that is configured, and the present invention provides a first safety that decreases internal pressure by increasing the discharge amount of gas while the low pressure spring 17 retreats when the internal pressure of the gas can approaches the dangerous expected pressure range (about 5 kg / cm 2). When the pressure in the apparatus and the gas can 29 reaches the dangerous pressure range (5 to 7 kg / cm 2), the gas can 29 is separated by the high pressure spring 18 being retracted by the pressure in the gas can. When the secondary safety device to block the inflow and the separated gas can 29 rise in internal pressure due to radiant heat and approach the deformation threshold pressure range of the gas can, the internal pressure of the can can As the stem 31 protrudes, the stem 31 of the gas can 29 is connected to the gas inlet again so that the gas is introduced and the introduced gas is discharged to the outside through the burner 28 through the mixing pipe. By including a safety device, a safety device that can prevent the gas container from being exploded by internal pressure in advance is proposed.

According to the present invention, when the internal pressure of the gas can reaches the dangerous predicted 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 reaching, the stem portion of the gas can protrudes, and when the stem of the gas can is mounted at the gas inlet again, it includes a tertiary safety device that discharges the gas to the outside through the burner through the mixing pipe to prevent the explosion of the gas container. I can prevent it beforehand

Description

Low pressure and high pressure separate type safety device for gas stove {APPARATUS OF SAFE GAS RANGE IN SEPARATED 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 removable 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 state in order to prevent the above safety accident, 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, when the gas container reaches a predetermined range by internal heat due to heat, an improved flow-blocking safety device is disclosed so that the gas can be discharged to the outside to reduce the pressure in the gas can to prevent the container from exploding. 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 type.

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 a safety device for a portable gas stove when the internal pressure of the gas can is in the range of a dangerous expected pressure, for example, 5 kg / cm 2 or more, and when the gas internal pressure approaches 5 kg / cm 2. The car safety device, the secondary safety device in the case of 5 ~ 7kg / ㎠ and the deformation threshold pressure range of the gas can, that is more than 13kg / ㎠ in the safety device is not provided according to the problem of a large accident has been inherent.

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 may be introduced into another gas stove operating in the vicinity, or may be discharged to another fire source to cause an unexpected large accident. There is an inherent danger.

The present invention is designed to solve this problem, and the main purpose of the present invention is to increase the amount of gas discharged as the low pressure spring retreats when the internal pressure of the gas can reaches the dangerous expected pressure range of the gas can, for example, 5 kg / cm 2. The primary safety device to reduce the internal pressure and when the pressure in the gas can reaches a dangerous pressure, that is, 5 to 7 kg / cm 2, the high pressure spring is retracted by the pressure in the gas can, allowing the gas can to be separated to prevent the inflow of gas. When the internal safety of the separated gas can increases due to radiant heat and reaches the deformation pressure of the gas can, the stem of the gas can protrudes by internal pressure, and the stem of the gas can is connected to the gas inlet again. Gas is introduced and the gas is discharged through the burner to the outside through the burner, so that the gas container It is to provide a separate safety device that separates the high and low pressure that can prevent the explosion 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 main cross-sectional view illustrating the operation of the safety device when the gas pressure is normal in the 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 the operating state of the secondary and tertiary safety devices according to the present invention,

Figure 4d is a longitudinal sectional view showing a cross section of the second housing 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 flow path 11a, 11b: through hole

13a, 13b: Internal passage 13c: Gas passage groove

14a and 14b: first and second sealing members

15a, 15b: Bottom plate 16: Moving pin

17: low pressure spring 18: high pressure spring

19,102: regulator

20: gas discharge pipe 21: gas ball

23a, 23b: O-ring 24: main nozzle

25a, 25b: first and second housings 26: guide holes

27: mixing tube 28: burner

29: gas can 30: upper can

31: stem 33: protrusion

34: seating part

Hereinafter, the low pressure and high pressure separation type 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 side of the regulator is provided with a through hole (11b) through the gas passage 10, the projection 33 is provided on the lower side of the through hole (11b), the lower side is connected to the gas hole (2l) The second housing 25b having the gas pressure of 19 discharged to the outside but having a lower plate 15b connected to the gas discharge pipe 20 connected to one side of the mixing pipe 27, and a gas passage groove 13c disposed on an inner wall thereof. The second sealing member 14b and the second sealing member 14b, which are supported by the low pressure spring 17 to close the through hole 11b, are provided to correspond to the protrusion 33. ) Is installed to slide up and down,

Apart from the second housing, the upper side includes a through hole 11a connected to the gas flow path 10, and a lower plate 15a having a guide hole 26 is coupled to the lower side of the first housing. A movable pin which is supported by the high pressure spring 18 in the position 25a, is positioned to close the through hole 11a by the first sealing member 14a, and extends to a predetermined length so that an end is inserted into the guide hole 26. (16);

The low pressure and high pressure separation safety device of the portable gas 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. Can be implemented.

For reference, since the dangerous expected pressure range, the dangerous pressure range, and the critical pressure range of the gas can defined in the present specification have a variable variable temperature range at room temperature for each country or region, the present specification limits the pressure range in the gas can. Although not described in the meaning, for the purpose of understanding the present invention, the internal pressure range of the gas can according to the operation of each step safety device is assumed as follows.

The estimated dangerous pressure range of the gas can is approximately 5 kg / cm 2, the dangerous pressure range of the gas can is 5-7 kg / cm 2, and the deformation threshold pressure range of the gas can is 13 kg / cm 2 or more.

In the present invention, in order to reduce the pressure according to the pressure range in the gas can, the low pressure and high pressure springs 17 and 18 corresponding to the elasticity of the pressure range are relatively first and second housings 25a and 25b, respectively. ) To be installed separately or simultaneously.

The low pressure and high pressure springs 17 and 18 are stretched by the pressure range of the gas can flowing into the gas passage 10 so that the first and second housings 25a and 25b respectively pass through the gas passage 10. The second sealing member (14b) in the inside to open the through hole (11a), that is, the second sealing member (14b) installed in the second housing (25b) to close the through hole (11b) when the gas pressure is in the normal range. However, if the gas pressure rises, the second sealing member 14b is retracted by the gas pressure, and the through hole 11b is opened, so that gas is introduced into the second housing 25b.

The introduced gas is combined with the mixing pipe through the inner passage 13b provided on the inner wall of the second housing 25b and combusted through the burner. Lower plates 15a and 15b are coupled to the lower portions of the first housing 25a and the second housing 25b to prevent the gas from leaking to other parts other than the gas discharge pipe 20 and the first assembled therein. And the second sealing members 14a and 14b, the movable pin 16 and the low and high pressure springs 17 and 18 are not separated from the housing.

In addition, the first housing 25a has a first sealing member 14a having a movable pin 16 extending to a predetermined length and supported by an elastic force of the high pressure spring 18 inserted therein. have. When the gas pressure is in the normal range, the through hole 11a is blocked by the first sealing member 14a so that gas does not flow into the first housing 25a.

However, if the gas pressure reaches the dangerous pressure range of the gas can, the first sealing member 14a and the second sealing member 14b are lowered by the gas pressure while simultaneously reducing the elastic force of the low pressure spring 17 and the high pressure spring 18. Thereby opening both through holes 11a and 11b.

At this time, the movable pin 16 attached to the first sealing member 14a protrudes out of the guide hole 26 and operates the gas can separating device to separate the gas can from the regulator to stop the inflow of gas.

O-rings 23a and 23b are provided around the first sealing member 14a and the second sealing member 14b, respectively, to maintain the inner walls of the first housing 25a and the second housing 25b in an airtight state. In addition, the second sealing member 14b may be made of a rubber material having elasticity, so that the second sealing member 14b may be tightly sealed to prevent gas from passing through the elasticity when the second sealing member 14b is in close contact with the through-hole 11b.

The control method according to the above is a primary safety device that reduces the pressure in the gas can when the internal pressure of the gas can is close to the dangerous expected pressure range of the gas can (5 kg / cm 2), and the gas pressure is the dangerous pressure of the gas can. Secondary safety device that separates the gas can when reaching the range (5-7kg / ㎠) and 3 which cancels the pressure of the gas can when the pressure of the gas can reaches the critical pressure range (13 kg / ㎠ or more). The following describes the car safety device in sequence.

<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 pressure of the gas entering the gas in the gas can approach the dangerous expected pressure range, the low pressure spring ( The second sealing member 14b, which is elastically supported by 17, is retracted by gas pressure so that the through hole 11b is opened, and gas is introduced into the gas discharge pipe 20 and the mixing pipe 27, and the mixing is performed. The combustion step of continuously supplying gas to the burner 28 together with the main nozzle 24 attached to one side of the tube 27.

When the internal pressure of the gas can approaches 5kg / ㎠, which is the expected pressure range, the range of the dangerous pressure is not reached before the 5 ~ 7kg / ㎠, which is the dangerous pressure range regulated by the Korea Gas Safety Corporation. The gas is discharged to the burner via the mixing pipe through the gas discharge pipe 20 so as not to.

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, and the internal pressure of the gas can is rapidly reduced;

If the internal gas pressure of the gas can is below the dangerous anticipated pressure range, the seat 34 moves by the force of the low pressure spring 17 to block the inlet of the through hole 11b, and the pressure is higher than the dangerous anticipated pressure range. When reaching, opening the through hole 11b; and

If the risk is below the expected pressure range, it includes repeating the step of closing the through hole 11b again.

By such a repetitive operation, the internal gas pressure in the gas can 29 is prevented from reaching a dangerous pressure range of 5 to 7 kg / cm 2 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 it is described, the internal pressure of the gas can increases during the use of the portable gas stove despite the operation of the primary safety device When approaching the dangerous pressure range, the mounting portion 34, the first sealing member 14a and the movable pin 16, which are elastically supported by the low and high pressure springs 17 and 18, are simultaneously lowered; ;

The first sealing member 14a and the second sealing member 14b installed in each of the housings 25a and 25b are moved by the high pressure spring 18, thereby moving the first sealing member 14a and the first sealing member 14a. As the low pressure and high pressure springs 17 and 18 mounted on the bottom surface of the second sealing member 14b are compressed, the movable pin 16 protrudes out of the guide hole 26 so that a gas can separating device (not shown) is provided. The gas can 29 is separated from the regulator by activating the &lt; RTI ID = 0.0 &gt;

The gas can separating device is not shown and is in contact with the lower surface of the movable pin 16, the movable pin 16 is lowered to operate the gas can separating device to operate the gas can 29 from the regulator 19 instantaneously. ) Is released. As the gas can is dismounted and the gas supply is stopped, the combustion gas is automatically extinguished. When the gas can is separated from the regulator, the inflow of gas is stopped and the gas pressure is canceled so that the low pressure spring 17 and the high pressure spring 18 are returned to their original positions by their restoring force, so that the first sealing member 14a and the second can The through holes 11a and 11b are closed by the sealing member 14b.

<3rd safety device>

Third, Figure 4c is a longitudinal sectional view showing an 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, it will be described.

As described in the secondary safety device, the gas can 29 separated from the regulator 19 is expanded by the radiant heat generated from the cooking vessel, so that the gas pressure in the gas can 29 is expanded so that the critical pressure of the gas can is greater than 13 kg / cm 2. The upper portion 30 of the gas can 29 protrudes and deforms to the outside by the gas can pressure, and the stem 31 of the gas can 29 rests on the inlet of the regulator 19. ;

Due to the inflated gas pressure, the first and second sealing members 14a and 14b retreat while overcoming the elastic force of the low pressure and high pressure springs 17 and 18, so that the expansion gas in the gas can 29 passes through the inner passage 13b. It is a step to be discharged to the burner 28 through the mixing pipe 27 through the gas discharge pipe 20 formed on one side of the).

When the internal pressure of the gas can 29 is close to the deformation threshold pressure range, the gas of the gas can 29 is expanded to expand first from the upper portion 30 of the gas can 29, and then the gas is injected into the gas inlet again. The stem 31 of the can 29 is mounted.

Due to this, the stem 31 of the gas can 29 is connected to the gas inlet again, and gas is introduced into the inlet. In this case, the gas pressure is 13 kg / cm 2 or more, so that the seating part 34 and the movable pin are The low and high pressure springs 17 and 18 mounted on the 16 are simultaneously compressed.

When the low pressure spring 17 is compressed and the through hole 11b is opened, the gas introduced into the burner 28 is discharged through the gas discharge pipe 20 and the mixing pipe 27 to lower the internal pressure of the gas can 29. This can prevent the gas can 29 from being exploded in advance.

On the other hand, even if the movable pin 16 retreats while overcoming the elastic force of the high-pressure spring 18, the stem 31 portion of the gas can 29 is physically protruded and deformed as shown in FIG. The gas can 29 is not retracted because is an extended state. Therefore, even if the movable pin 16 protrudes out of the guide hole 26 to operate the container release device, the gas can is not released and the gas is discharged to the burner 28 until the internal pressure of the gas can drops to an appropriate value. .

4D is a cross-sectional view showing the inside of the second housing, and shows an example in which the gas passage groove 13c is provided in the inner wall thereof in the axial direction. The O-ring (23b) is in close contact with the inner wall of the second housing to maintain the airtight state, but when the second sealing member is lowered, the gas passes through the inner passage (13).

As described above, the low-pressure and high-pressure separable safety device of the gas stove according to the present invention is formed by separating the primary safety device, the secondary safety device, and the third safety device, and are independently or interoperable in operation. It provides a safety device, and discharges the gas at the safest place by discharging the internal gas through the mixing pipe when discharging the gas to the outside, and the discharged gas pressure drops rapidly due to the flow resistance. Is to provide an advantage that can not be reached.

Furthermore, since the primary safety device, the secondary safety device and the tertiary safety device are separated and formed independently or interoperably in operation, the safety device operates smoothly and improves the stability of the portable gas stove. Safety devices can be provided.

Claims (2)

In the safety device of a portable stove, A gas passage 10 formed inside the regulator 19 for gas discharge; The upper side of the regulator is provided with a through hole (11b) through the gas passage 10, the projection 33 is provided on the lower side of the through hole (11b), the lower side is connected to the gas hole (2l) The second housing 25b having the gas pressure of 19 discharged to the outside but having a lower plate 15b connected to the gas discharge pipe 20 connected to one side of the mixing pipe 27, and a gas passage groove 13c disposed on an inner wall thereof. The second sealing member 14b and the second sealing member 14b, which are supported by the low pressure spring 17 to close the through hole 11b, are provided to correspond to the protrusion 33. ) Is installed to slide up and down, Apart from the second housing, the upper side includes a through hole 11a connected to the gas flow path 10, and a lower plate 15a having a guide hole 26 is coupled to the lower side of the first housing. A movable pin which is supported by the high pressure spring 18 in the position 25a, is positioned to close the through hole 11a by the first sealing member 14a, and extends to a predetermined length so that an end is inserted into the guide hole 26. (16); The low pressure and high pressure separation type safety device of the portable gas 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. The method of claim 1, The second sealing member (14b) is a low pressure and high pressure separation type safety device of a gas stove, characterized in that made of a rubber material having elasticity.