TW593928B - Hydrostat for portable gas range - Google Patents

Abstract

Provided is a hydrostat for a portable gas range, which prevents the explosion of a gas container by automatically discharging overcompressed gas from the gas container when the inner pressure of the gas container increases to an explosion pressure. The hydrostat includes a body including a gas outlet, which communicates with a gas inlet of the governor valve, and a sealed room, which communicate with the gas outlet. An opening/closing unit is installed within the sealed room of the body such that it can elastically move up and down in order to discharge overcompressed gas by opening the gas outlet when the inner pressure of the gas container reaches or exceeds a threshold value of deformation. A cap is fixed at the bottom of the body so as to support the opening/closing unit and has a discharge hole for discharging overcompressed gas, which escapes the gas container through the gas outlet.

Description

593928 V. Description of the invention (1) The technical field to which the invention belongs The present invention relates to a burst preventer for a portable gas furnace, and in particular to a burst preventer that can automatically discharge gas. When the pressure of the gas storage barrel installed in the portable gas furnace continues to increase, the gas can be automatically discharged by the burst prevention device, or when the gas passage is blocked due to the safety device dismantled by the reservoir, the explosion prevention device can also be used. The gas is automatically discharged, and the safety device for the removal of the reservoir is used to extinguish the fire when abnormal pressure is generated in the gas storage barrel. This can prevent the gas storage barrel from bursting. Prior art It is possible to use gas stoves for cooking in the field or indoors. Due to portability and convenience, the users and popularity of portable gas stoves have increased significantly, and there are already various forms of safety devices on the market, which are used to avoid accidents in portable gas stoves. Please refer to Fig. 1 to Fig. 3. The portable gas range 1 (portable gas range) includes a container guide 5 (container guide) for guiding the gas container 3 and the disassembly rod 2 ( (installing / detaching lever) downward movement, so that the gas storage tank 3 can be mounted on the control valve 4 (governor valve) in a horizontal direction. The portable gas furnace 1 also includes a spark plug 6 and a control lever 7 for controlling the intensity of the spark and the intensity of the combustion. In addition, the gas-fired furnace 1 can also perform Q γ k, “, a 丄 ⑶, including a hearth 8 (burner) and a Yun; 9 (cover), where the hearth 8 is used to talk about the death of“ 丄 ”. Use it's bad by bitch 9 can

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苐 Page 6 593928 V. Description of the invention (2) Cover the gas storage bucket 3. As shown in FIG. 2, when the disassembling lever 2 is pulled down, the bucket guide 5 moves forward so that the gas bucket 3 can be engaged with the control valve 4. When the dismounting lever 2 is pressed, the storage barrel guide 5 will move backward, so that the gas storage barrel 3 and the control valve 4 can be separated from each other. When the pressure inside the gas storage barrel 3 reaches a dangerous level, the disassembly lever 2 will move upwards due to the action of the safety device for disassembling the storage container, and at this time, the storage barrel guide 5 will move backward, thereby enabling the gas storage barrel to 3 and the control valve 4 are separated from each other, so that the gas storage tank 3 can be prevented from being subjected to excessive pressure. As shown in Figure 3, due to the heat radiation, the internal pressure of the gas storage barrel 3 may be too large and cause deformation. 'The deformable portion 3a (top of the gas storage barrel 3) will protrude, so the gas The outlet of the storage tank 3 will contact the control valve 4 closely. In addition, in the case of the passage-blocking type portable gas furnace, when the internal pressure of the gas storage barrel 3 reaches a dangerous level, the passage of the control valve 4 is blocked due to the actuation of the safety device for disassembling the reservoir, so that the gas can be prevented. When the storage tank 3 generates excessive pressure. However, the present invention provides a portable gas furnace 1 burst preventer. When the pressure in the gas storage bucket 3 continues to increase to the critical pressure of deformation or even exceeds it, the overpressure gas is automatically discharged to avoid the gas storage bucket. 3 Burst situation. In addition, when the gas passage is blocked by the current safety device, the gas can be automatically discharged by the burst preventer. The safety device is used to extinguish the fire when abnormal pressure is generated in the gas storage barrel 3. When gas is supplied from a gas storage tank to a portable gas stove, because

10412pif.ptd Page 7 593928 V. Description of the invention (3) When gas is vaporized, it will absorb the heat of the surrounding environment, so the latent heat of vaporization will reduce the temperature of the gas storage barrel, so the possibility of gas explosion due to temperature increase Sex is very low. However, when the stove placed on the portable gas stove is heating, the radiant heat energy emitted from the bottom of the stove is conducted to the gas storage barrel. When the radiant heat emitted from the bottom of the stove is greater than the latent heat of vaporization of the gas, the heat will accumulate on the gas storage barrel, which will increase the temperature of the gas storage barrel. Therefore, as a result of gas expansion due to temperature increase, the internal pressure of the gas storage tank will increase. In Korea and Japan, only portable gas stoves with automatic gas passage blocking are allowed to be manufactured and sold. Among them, if a portable gas stove is to be manufactured or sold in South Korea, when the internal pressure of the gas storage barrel is between 5-7 kg / cm2, the portable gas stove can automatically block the gas passage to achieve the purpose of extinguishing the fire; and If the portable gas stove is to be manufactured or sold in Japan, when the internal pressure of the gas storage barrel is between 4-6 kg / cm2, the portable gas stove can automatically block the gas passage to achieve the purpose of extinguishing the fire. To block the gas passage, the portable gas stove is equipped with a safety device. When the internal pressure of the gas storage barrel is between 5 and 7 kg / cm2, the gas storage barrel will be separated from the inlet of the control part of the portable gas furnace, so that a safety device for removing the reservoir can block the gas passage. Alternatively, when the internal pressure of the gas storage barrel is between 4-6 kg / cm2, the gas storage barrel will be separated from the inlet of the control part of the portable gas furnace, so that a safety device for removing the reservoir can block the gas passage. Among them, in Korea, the portable gas furnace with a storage tank disassembly type is mainly used, and in Japan, the portable gas furnace with a gas passage blocking type is used.

10412pif. Ptd Page 8 593928 V. Description of the invention (4) Gas stove is the main type. When the radiant heat emitted from the bottom of the stove is greater than the latent heat of vaporization of the gas, the heat will accumulate on the gas storage barrel, which will increase the temperature of the gas storage barrel. Therefore, as a result of gas expansion due to temperature increase, the internal pressure of the gas storage tank will increase. However, the safety device can prevent the explosion of the gas cylinder due to the increase of the internal pressure of the gas cylinder. For example, the normal pressure of a butane gas storage barrel configured in a portable gas furnace is between 2-3 kg / cm2, while the initial deformation pressure of the gas storage barrel is 13 kg / cm2, and the second deformation pressure system is It is 15 kg / cm2. In other words, when making a gas storage barrel, care must be taken to ensure that it does not explode when its internal pressure reaches 15 k g / c in2. When the temperature of the gas storage barrel increases due to radiant heat, and the internal pressure of the gas storage barrel reaches 5-7kg / cm2, the portable gas furnace will block the gas channel at this time, so the gas storage barrel can be avoided The internal pressure continued to increase, leading to an explosion in the gas storage tank. As shown in FIG. 4 and FIG. 5, the body 11 of the access blocking safety device includes an inlet 11a, an chamber 12 and a control lever 14 in which the gas is stored. The bucket 3 can be engaged with the entrance 11a of the passage blocking safety device, and can be removed from the entrance 11a of the passage blocking safety device. The chamber 12 must be maintained at a fixed gas pressure, and the gas in the chamber 12 will be supplied to the furnace. In addition, the multiple transmission of gas transmitted to the furnace can be controlled by the control lever 14, and the main body 11 of the channel blocking safety device also includes a channel ’series connection entrance.

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Page 593928 V. Description of the invention (5) 1 1 a, chamber 12 and control lever 14. A gas blocking unit 50 (gas blocking unit) is also provided in the passage between the inlet 11a and the chamber 12, and when the gas pressure exceeds a value, the passage can be blocked by the gas blocking device 50. A pressure control unit 30 (pressure control unit) is arranged in the chamber 12 to keep the pressure of gas transmitted to the furnace under a constant. The gas blocking device 50 includes a taper hole 51, a cylinder hole 52, a blocking valve 53 and a plate spring 54. Among the holes 51, The diameter gradually decreases in the direction of the end of the channel, and the hole 5 1 will be straightly engaged with the round hole 5 2. The blocking valve 5 3 is arranged within the hole 5 1 and the round hole 5 2, and is passed through the gas. The pressure can cause the blocking valve 5 3 to move backward, and the disc-shaped elastic piece 54 can elastically support the back of the blocking valve 53. The disc spring 54 is in contact with a return valve 55, and one end of the return valve 55 is exposed to the outside, and a return lever 56 is externally installed above the return valve 55. The return lever 5 6 can move up and down and can advance the return valve 55. The blocking valve 53 includes a blocking portion 57 (blocking portion) and an operating portion 5 8 (〇peratingp 〇rti 〇η), wherein the blocking portion 57 is located at the front of the hole 51, and the operating portion Part 5 8 is located inside the circular hole 5 2. In addition, an O-ring is arranged on the surrounding surface of the blocking portion 57. When the blocking valve 53 is moved backward, the hole 5 1 can be sealed by the 0-ring arranged around the blocking portion 57. . Furthermore, a 0-ring is also arranged on the surrounding surface of the operation portion 5 to prevent gas leakage. In addition, a nozzle 59 (nozzle) is disposed on one side of the circular hole 52,

10412pif.ptd Page 10 593928 5 Description of the invention (6) It is close to the front end of the operation part 58, and the nozzle 59 will communicate with the chamber 12. The pressure control device 30 includes a rubber sheet 3i (rUbber plate), a spring 32 (spring), a needle holder 33 (needu holder), and a needle valve 3 5 (n e e d 1 e v a 1 v e). Among them, the rubber sheet 31 is the upper part of the sealed container K, and the spring 32 can press the rubber sheet 3i downward, and the needle carrier 33 is connected to the rubber sheet 31. The needle valve 35 can be engaged with the main body 11 by being located at the intermediate position = hinge (h ^ ge), and one end of the needle valve 35 is connected to the field head carrier 33. The needle valve 35 has a stopper 34 (51: 00 ：) for closing or opening the nozzle 59 located at the other end of the needle valve 35.合 给 雁 W # The user opens the gas furnace sun temple, and the gas in the chamber 1 2 should go to the hearth to reduce the gas pressure in the chamber 丨 2. At this time, bobo: and f by hinge The needle valve 35 connected to the main body is inside the chamber i 2. Dad, and the gas in the gas storage barrel will flow to one: After the gas flows into the chamber 12, if the pressure in the chamber 12 is overdriven, the next day, rubber sheet 31 It will move upward against the elastic force of the spring 32 so that the needle passing valve 35 will close the nozzle 59.断 卩 卩 ς q ^ 外 ^ ’When the gas storage barrel is overheated and exceeds a predetermined pressure, the male hole moves 51 to make f = elastic, and it will move backward to block and extinguish. The supply of gas will be interrupted, and the fire on the furnace will be extinguished. When the gas is burned, the latent heat of vaporization is greater than the gas. increase…,

593928 5. Description of the invention (7) Plus, even after the gas supply is blocked, the channel blocking safety device cannot handle the rapidly increasing pressure in the gas storage barrel, and it cannot handle the pressure of the gas remaining on the gas furnace. In general, the danger of explosion in a gas storage tank can be prevented by blocking the gas supply under a dangerous pressure. However, after a long period of use of the access blocking safety device, there is still a risk of a gas tank explosion. Recently, a method for preventing the explosion of a gas storage barrel has been disclosed in Korean Patent Application No. 2000-0065187. Fig. 6 is a schematic side sectional view of the safety device of the portable gas furnace according to Korean Patent Application No. 2000-0 0 6 5 1 8 7. The passage gas blocking safety device of the portable gas furnace is also equipped with a gas discharge unit 60. The gas discharge unit 60 includes a housing 61 and a safety bar 63, of which The casing 61 includes a through-hole 61a (through-hole) and a discharge hole 61b (discharge h ο 1 e). The through-hole 6 1 a is connected to a channel, and the gas can be released to the outside through the release hole 6 1 b. The safety lever 63 can be elastically pressed by a spring 62 and the safety lever 63 will closely contact the through hole 61a. The casing 61 also has a cylinder hole 64. One end of the circular hole 64 is connected to the through hole 61a, and the other end of the circular hole 64 is connected to a circular cap 65 in a threaded manner. The release hole 61b is located at the end of the circular side wall of the circular hole 64 close to the through hole 6a, and a nozzle 66 (nozzle) extending to the outside is connected to the release hole 61b. Women's full cup 63 includes a piston portion 63a (piston portion) and a

l〇412pif.ptd Page 12 593928 V. Description of the invention (8) The sealing portion 63b (sealing portion), in which the piston portion 63a will be inserted into the circular hole 64 in the housing 61, and the change in gas pressure will cause Movement of the piston portion 6 3a. The sealing portion 6 3b will be in close contact with the through hole 61a, and the soil spring 62 is arranged at the rear end of the safety rod 63, and will press against the inner wall 0 of the round cover 65. Therefore, as described above, when the When the pressure exceeds a predetermined value, the needle valve 35 of the pressure control device 30 will block the nozzle 59, and the gas supply to the chamber 12 may be initially blocked. At this time, the gas storage barrel will appear overheated. And the pressure of gas supply will exceed a reference value. Then, by the operation of the disc-shaped elastic piece 54, the gas supply can be blocked again, and the fire in the furnace cavity will be extinguished and extinguished. When the radiant heat emitted from the bottom of the stove is greater than the latent heat of vaporization of the gas, the thermal radon will accumulate on the gas storage barrel, increase the temperature of the gas storage barrel, and increase the pressure in the gas storage barrel. When the gas storage gas pressure exceeds a predetermined value, for example, 13-15 kg / cm2, the safety rod 63 of the gas unit 60 will overcome the elastic force of the spring 62, and move backward to make the through hole 6 1 a appear open. . Therefore, the gas in the gas storage tank can be discharged to the outside through the nozzle 66, and the internal pressure of the gas storage tank can be reduced. Even if the gas tank is overheated, it can be safely used without the risk of explosion. However, since the through hole 61a of the casing 61 extends from the hole 51, the structure is extremely complicated. In addition, since the gas release unit 60 is out of the side of the main body 11, the volume of the main body 丨 丨 will increase, and the structure of the portable gas furnace must be changed.

l〇412pif.ptd Page 13 593928 V. Description of the invention (9) Because the through hole 6 1 a of the housing 6 1 is not a pure gas passage, it must be mechanically connected with the safety device operated by the disk-shaped spring 54 Therefore, the casing 61 and the main body 11 are manufactured separately, so the process of assembling the casing 61 and the main body 11 must be additionally added. In addition, since the release hole 6 1 b must be formed in the gas furnace, in a better case, the gas must be discharged downward to the outside using a pipeline, so an additional nozzle 6 6 must be designed to make the safety device The overall structure has become more complicated. In the case of a gas cylinder disassembly safety device that can disassemble a gas storage cylinder from a gas furnace, the failure rate can be very high because external mechanical components must be installed. When used for a long time, the operating part will be easily damaged and will be easily contaminated by external substances. At this time, even if the internal pressure of the gas storage tank exceeds a dangerous value, the safety device will not operate. In addition, the gas storage barrel must use an external component to be removed from the safety device for the barrel disassembly. However, during the disassembly process, a large amount of force must be spent, and the consumed power will vary with the size of the gas storage barrel. Increase. When the pressure inside the gas storage barrel exceeds a predetermined value, although the safety device of the storage barrel is disassembled or the passage blocking safety device blocks the gas passage, the latent heat of vaporization will disappear immediately and the fire will extinguish, but even after the fire is extinguished Because the gas storage barrel will still absorb the radiant heat emitted from the stove, such as the frying pin, this will cause the pressure in the gas storage barrel to increase rapidly. Therefore, the internal pressure of the gas storage tank will exceed the initial reservoir deformation pressure, and even reach the second reservoir deformation pressure so that

10412pif. Ptd Page 14 593928 5. Description of the Invention (ίο) The risk of explosion in the Degas storage barrel. In the gas accident annual report (Chapter 4, ρ · 185, 2000) published by the Korean Gas Safety Company, points 5-1 refer to stoves larger than a tripod, and paragraph 5 refers to portable butane The accident of the gas stove (portable gas stove) and the combined storage bucket (butane gas storage bucket), it is mentioned in this article that when the stove is larger than the tripod of the portable butane gas stove, the radiation heat The gas storage barrel assembled on the gas furnace will be heated, causing the internal pressure of the gas storage barrel to increase, so that the gas storage barrel will have the risk of explosion. It was also mentioned that when using a portable butane gas stove to grill meat, if the overpressure shut-off device of the gas stove is activated, butane will also explode after a short period of time. This report means that even when the safety device is activated normally, the gas tank can still explode. However, in fact, the gas storage tank will explode shortly after the safety device is activated. This proves that the latent heat of vaporization of the gas will disappear immediately after the gas passage is blocked. Therefore, the pressure in the gas storage barrel will increase rapidly, and the deformation pressure exceeding the explosion will cause the gas storage barrel to explode. Therefore, it is necessary to develop a new safety device that can completely prevent the explosion of the gas storage barrel located in the portable gas furnace. SUMMARY OF THE INVENTION In view of this, one object of the present invention is to provide a heat sink fixing unit, which can easily install the heat sink and prevent heat radiation.

10412pif. Ptd Page 15 593928 5. Description of Invention (11) The device is disengaged. The objects and advantages of the present invention are also described below, or the objects and advantages of the present invention can be clearly understood through the actual operation of the present invention. In order to achieve the foregoing or other objectives of the present invention, a burst preventer for a portable gas furnace is provided, which includes a storage barrel separation safety device or a passage blocking safety device. When the burst prevention device is equipped with a storage barrel separation safety device, When the internal pressure of a gas storage barrel reaches a dangerous value, the storage barrel separation safety device will automatically separate from the gas storage barrel, thereby blocking the gas passage and extinguishing the fire; and the safety device is blocked in the burst preventer assembly passage to block the safety device Under the circumstances, when the internal pressure of a gas storage barrel reaches a dangerous value, the passage blocking safety device will block the gas passage, thereby extinguishing the fire, and the gas storage barrel is also connected to the passage blocking safety device. The burst preventer of the portable gas furnace further includes a main body, a switching element and a cap. The main body includes a gas outlet and a sealed chamber. The gas outlet is connected to a gas inlet of a control valve, and the sealed chamber is connected to the gas outlet. The switching element is assembled in the sealed chamber of the main body. When the internal pressure of the gas storage barrel exceeds a critical deformation value, the switching element can be moved up and down elastically, so that the gas outlet can be kept open to release gas. The cap is assembled on the bottom end of the main body to support the switching element. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, a preferred embodiment is given below in conjunction with the accompanying drawings for detailed description as follows:

10412pi f. Ptd Page 16 593928 V. Description of the Invention (12) Embodiments > Next, preferred embodiments of the present invention will be described, and illustrated with illustrations.

Please refer to Fig. 7 to Fig. 9. According to the first embodiment of the present invention, the burst preventer of the portable gas furnace includes a body 70, which is arranged under the control valve 4 of the gas furnace. The main body 70 is in the form of a barrel, and the main body 70 includes a gas outlet 72 and a sealed room 74. The gas outlet 72 is communicated with the gas inlet 4a and sealed. The chamber 74 will communicate with the gas outlet 72. In addition, the main body 70 of the burst preventer is one of a plurality of tripods for supporting the entire gas furnace. A switching element 80 (〇pening / c 1 〇singunit) is assembled in the sealed chamber 74 of the main body 70 and can be moved up and down in the sealed chamber 74, so that the gas outlet 72 can be selectively opened or closed. When the pressure inside the storage barrel exceeds the critical pressure of deformation or explosion, the gas outlet 7 2 will be opened. The switching element 80 includes a sealing rod & 2 (s aa 1 ing shaft), which is assembled in the sealing chamber 74 of the main body 70 and can be moved up and down in the sealing chamber 74. A circular support plate 84 (circular supp (^ t plate) is located at the top of the seal rod 82, and a seal member 86 (seaUng

On the circular support plate 84, the gas outlet 72 can be reliably opened or closed by the sealing member 86. The elastic member 88 (6, 3, and 3 members) is arranged in Song Shejitian. Take # poor # * to say 9 around, and the elastic member 88 can make the seal 82 elastically move up and down, where the elastic member 88 is more than

弹弹 餐 ’’ @Top of the compression spring can be connected with the round support U

10412pif.ptd Page 17 593928 V. Description of the invention (13) Touch or phase fixation. Under better conditions, the compression spring's elastic force or tension should be greater than the dangerous pressure (for example, 5-7kg / cm2 or 4-6kg / cm2). Under this dangerous pressure, the safety device will generally act, and the compression spring's elastic force Or the tension should be less than the deformation pressure of the storage barrel or the explosion pressure of the storage barrel. A cap 90 (cap) is detachably mounted on the bottom of the main body 70, can be used to open or close the sealed chamber 74 of the main body 70, and can support the bottom of the elastic member 88 of the switch element 80. The cap 9 〇 includes a joint portion 92 (coupl ing porti ο η) and a supporting portion 9 4 (hand 1 e). The cap 9 0 is detachably connected to the main body by the joint portion 9 2 The bottom of 70 is screwed, so that the bottom of the elastic member 88 can be supported, and the supporting portion 94 is engaged with the joint portion 92, so that the user can grasp the cap 90 and rotate the cap 90. A guide hole 9 6 (g u d e h ο 1 e) is located in the middle region of the cap 90 and penetrates the cap 90 in the axial direction. The bottom of the sealing rod 82 of the switching element 80 is inserted into the guide hole 96, so that the sealing rod 82 can be restricted from moving up and down by two paths. In a preferred case, a plurality of discharge holes 98 (discharge holes) extending in the longitudinal direction may be arranged at the edge positions of the guide holes 96, so that the gas can be released from the gas storage bucket. One or more release holes 98 may be selectively disposed at the bottom of the main body 70, and the release holes 98 may communicate with the guide holes 96, through which the gas may be released from the gas storage tank. A plurality of protruding legs 90a (protruding legs) can be arranged on the outer surface of the cap 90, so that the outer surface of the cap 90 can be kept at a distance from the ground, so that the gas can be released from the release hole 98. Please refer to FIG. 10 and FIG. 11, the burst of the second embodiment of the present invention

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Page 19 593928 V. Description of the invention (15) — a " ------ h ^ > 1 e) ′ and the protruding block 丨 8 4 a can be inserted into the engaging hole 丨 8 6 & The elastic 4 1 8 8 is arranged around the sealing rod 丨 8 2, and the elastic member 丨 8 8 can elastically move up and down 2 1 182, wherein the elastic member 188 is compressed by, for example, f, 'double spring more' The top end of the spring can be fixed to the bottom 4 f of the circular support plate 1 8 4, and the inner diameter of the upper part of the elastic member 88 is roughly equal to the outer diameter of the sealing rod 1 8 2. In the best case, the spring force or tension of the compression spring should be greater than the dangerous pressure (such as s5-7kg / cm2 or 'dangerous pressure ^ here, the safety device will generally act, and the elastic force or tension of the pressure spring will be less than the storage Bucket deformation pressure. Bucket frying pressure. A cap 1 90 is detachably assembled at the bottom of the main body 170, which can be used to open or close the sealed chamber 1 7 4 of the main body 170, and can support the switching element 1 8 The bottom of the elastic member 1 8 8 of 0. The cap 1 9 0 includes a joint portion 1 9 2 and a supporting portion 1 9 4. The cap 1 9 0 is detachably connected by the joint portion 1 9 2 It is screwed to the bottom of the main body 170, and the supporting part 丨 9 4 is engaged with the joint part 丨 9 2 'so that the user can grasp the cap 190 and rotate the cap 190. It is worth noting Yes, a convex part 19 2 a (keeper) is integrally formed on the joint part 丨 9 2 of the cap 190, so that the bottom of the elastic member 8 8 can be fixed around the convex part 1 9 2 a. In addition, a release hole 198 extending along the longitudinal direction is formed in the middle position of the cap 190, so To release the gas from the gas storage bucket. A plurality of protruding feet 1903 can be arranged on the outer surface of the cap 190, so that the outer surface of the cap 190 can be kept a distance from the ground 'to prevent the release hole 1 9 8 is blocked by the ground. Please refer to FIG. 12 for a burst preventer system according to a third embodiment of the present invention.

10412pif. Ptd Page 20 593928 V. Description of the invention (16) The structure with a part is the same as the first and second embodiments described above, and the number used in the third embodiment is between 2000 and 3 0 0 Between to distinguish from the first and second embodiments. The burst preventer of the portable gas furnace includes a main body 270, which is arranged under the control valve 4 of the gas furnace. The main body 270 is in the form of a barrel, and the main body 270 includes a gas outlet 272 and a sealed chamber 274, wherein the gas outlet 272 will communicate with the gas inlet 4a, and the sealed chamber 274 will communicate with the gas outlet 27.2. In the third embodiment of the present invention, the main body 270 of the burst preventer is one of a plurality of stands for supporting the entire gas furnace of the building. In addition, a release hole 2 7 0 a can be selectively disposed at the bottom of the main body 2 7 0, and the release hole 2 7 0 a can communicate with the sealed chamber 2 7 4, and the gas can be removed from the gas by the release hole 2 7 0 a Released from the bucket. A switching element 2 800 is assembled in the sealed chamber 2 74 of the main body 2 70 and can be moved up and down in the sealed chamber 2 74, so that the gas outlet 2 72 can be selectively opened or closed. The switching element 280 includes a sealing rod 282, which is assembled in the sealing chamber 274 of the main body 270 and can be elastically moved up and down in the sealing chamber 274. The circular support plate 284 is located at the top end of the sealing rod 2 82 and the sealing member 2 8 6 is disposed on the circular support plate 284. The gas outlet 2 7 2 can be reliably opened or closed by the sealing member 2 8 6. The sealing member 2 8 6 is made of an elastic material, such as rubber. The elastic member 2 8 8 is arranged at the bottom end of the sealing rod 2 8 2, and the elastic member 2 8 8 can support the Fei Feng rod 2 8 2 so that the sealing rod 2 8 2 can elastically move up and down, among which the elastic member. 2 8 8 is a shrapnel (p 1 atespring). In the best case, if the elastic force or tension of the elastic piece of the elastic member 2 8 8 is greater than the dangerous pressure (for example, 5-7 kg / cm2 or 4-6 kg / cm2), the safety device under this dangerous pressure

l〇4l2pif · pt (j p. 21 593928 V. Description of the invention (π) generally works, and the elasticity or tension of the elastic piece such as the elastic member 2 8 8 is less than the deformation pressure of the storage barrel or the explosion pressure of the storage barrel. A cap 2 0 0 is detachably assembled at the bottom of the main body 2 70, which can be used to open or close the sealed chamber 2 7 4 of the main body 2 70, and can support the elastic member 2 8 8 of the switching element 2 8 0. Cap 2 9 0 includes a joint portion 2 9 2 and a supporting portion 2 94. The cap 2 9 0 is detachably screwed to the bottom of the main body 2 7 0 by the joint portion 2 92 and the joint portion 2 9 2 has a supporting groove 292a (keeping groove), which can accommodate the elastic member 288 to move elastically therein, and the supporting portion 2 9 4 is engaged with the engaging portion 2 9 2 so that the user can grasp the cap Cover 2 900 and rotate the cap 2 900. It is worth noting that the release hole (not shown) can penetrate the cap 2 9 0 to release gas from the gas storage bucket. Multiple protruding feet (not shown) (Shown) can be arranged on the outer surface of the cap 290, so that the outer surface of the cap 290 can be kept a distance from the ground, so that The release prevention hole is blocked by the ground, so the gas can be discharged smoothly. Please refer to FIG. 13. The burst preventer of the fourth embodiment of the present invention has a part of the same structure as the first to third embodiments. The number used in the fourth embodiment is between 300 and 400 to distinguish it from the fourth embodiment. The burst preventer of the portable gas furnace includes a main body 370, which is arranged at The gas furnace is under the control valve 4. The main body 370 is in the form of a barrel, and the main body 370 includes a gas outlet 372 and a sealed chamber 374. The gas outlet 372 will communicate with the gas inlet 4a, and the sealed chamber 374 will communicate with The gas outlet 3 7 2 communicates. In the fourth embodiment of the present invention, the main body 370 of the burst preventer is one of a plurality of stands for supporting the entire gas furnace.

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V. Description of the invention (18) 0 0 switching elements 3 8 (1 are strong and can be installed in the sealed room 374 of the main body 3 70 in the sealed room 3 74, and move under the closed gas outlet 372 i, so Critical pressure glare that can be selectively opened or exploded § The pressure inside the gas storage barrel exceeds the deformable switching element 3 8 0 including a — i gas outlet 3 7 2 will be open. Within 3 74, * B has started, The sealing rod 382 'is fitted with a seal 3 8 4 mounted on the main body 3 70. The sealing rod j is moved up and down in the sealing chamber 374. A circular support disk groove is positioned at the top of the seal, and the support opening 3 8 2a ( SuPP〇rting type. The top of the sealing member 3 8 6 ′ and the inverted conical shape 3 8 6 can be reliably opened ^ On the support port 38 2a, the sealing member includes an inverted cone-shaped support to close the gas outlet. 3 7 2. Sealing member 3 8 6 pack support piece). ^ 3 ^ 6a (rever sed-con ^ shaped Conical support adjacent to the beginning of 3 8 63 building, sealing part 3 8 61) (8 "104 (^), The round part is arranged on the support port 3 仏, and the sealing part _ can be made of an elastic material, and the sealing part 38 "can fix a tile of 3 7 0 ^ ° ψ = at the top, you can selectively open or close the body enclosure, /, soil "port 2. The elastic member 388 is arranged around the sealing rod 3 8 2 The elastic member 388 can make the sealing rod 382 elastically up and down For example, the middle elastic member 388 is a compression spring, and the top of the compression spring can be in contact with or fixed to the bottom of the circular support plate 384. As described in the foregoing preferred embodiment, in a better case, The compression force of the compression spring or the dangerous tension (for example, 5-7kg / c ™ 2 or 4-6kg / cm2), under this force, the safety device will generally act, and the compression spring's elasticity or tension should be less than the storage Bucket deformation pressure or storage tank explosion pressure.

593928 V. Description of the invention (19) '---- --- l, according to the burst preventer of the fourth embodiment, when the cap 3 9 0 is tethered to the main body, the sealing member 3 8 6 can completely cover the gas outlet 3 7 2 on. Qiusi's is because the sealing member 3 8 6 includes a support portion 3 8 6a and a seal. The bottom portion of the support portion 3 8 6 a has an inverted cone structure, and the top of the six ^ ΐ 3 8 6 3 has-concave In the notch of the sealing portion 3 8 6 b, the sealing portion 3 8 6 b is in contact with the gas outlet 372 without deformation. Therefore, when the cap 390 is on the main body 3 70, the sealing rod 382 will rotate and move vertically, and the back sealing member 3 8 6 will only move vertically, so the sealing portion 3 8 6 b You can open or close the gas outlet 3 7 2 without deformation. . As shown in FIG. 13 of the fourth preferred embodiment of the present invention, an inverted cone-shaped branch 1 8 2 2 a is formed at the top end of the sealing rod 3 8 2, and a support portion 3 8 6 a of the sealing member 386 The bottom end also has an inverted cone-shaped structure. However, familiar with this, the artist should know that if the sealing rod 3 8 2 has an inverted conical structure and is supported.卩 3 8 6 a has an inverted cone-shaped notch at the bottom end, which can also achieve the same effect. In addition, the cap 3 9 0 is detachably assembled on the bottom of the main body 37. It cannot be used to open or close the sealed chamber 3 7 4 of the main body 37. It can also • support the switch element 3 8 0. The elastic member 3 8 8. For example, the cap 390 is detachably screwed to the bottom of the main body 370. It is worth noting that a plurality of release holes 3 98 are longitudinally extended and formed on the inner wall of the cap 3 9 0, and the release holes 3 98 will communicate with the sealed chamber 374 for releasing gas from the gas storage bucket. In addition, a plurality of protruding feet (not shown) may be arranged outside the cap 3 9 〇

593928 5. Description of the invention (20) On the surface, the outer surface of the cap 390 can be kept at a distance from the ground, so the gas can be smoothly discharged through the release hole 398. In the above embodiment, the caps 90, 190, 290, and 390 are all screwed to the main body 70, 1 70, 2 7 0, 3 7 0. Therefore, the caps 9 0, 1 are locked or loosened. 9 0, 2 9 0, 3 9 0 You can adjust the elastic members 8 8, 1 8 8, 2 8 8, 3 8 8. Those skilled in the art should know that the cap can also be fixed to the main body in other ways. For example, after adjusting the elastic member, the main body can press the periphery of the cap. In addition, the reason why one or more release holes 9 8, 1, 9 8, 3 9 8 extend in a longitudinal direction and face the ground is because the molecular weight of butane gas is larger than that of air, so that gas can be quickly Release from a gas storage cartridge. In the foregoing embodiment, the burst preventer of the portable gas furnace is disposed below the control valve of the portable gas furnace. However, those skilled in the art should know that the burst preventer can also be installed on the side or above the control valve, so that the main body of the burst preventer can communicate with the gas inlet of the control valve. Next, the operation of the burst preventer of the portable gas furnace of the above embodiment will be described. Referring to the first embodiment of FIGS. 7 to 9, the burst preventer is arranged under the gas furnace control valve 4, and is one of a plurality of legs of the gas furnace. Under normal circumstances, when the internal pressure in the gas storage tank is maintained in a normal state, the gas outlet 7 2 of the main body 70 is maintained in a closed state by the sealing rod 8 2 of the switching element 80. Among them, the seal rod 82 can be moved upward by the tension of the elastic member 88, so that the seal member 86 located on the top of the circular support plate 84 of the seal rod 82

10412pif.ptd Page 25 593928 V. Description of the invention (21) The gas outlet can be closed 72. Therefore, the gas released from the gas storage tank can be passed through the gas inlet to the hearth, so that cooking can be performed normally. When the gas storage barrel is exposed to excessive radiant heat and the internal pressure of the gas storage barrel rises above a dangerous value, the passage blocking safety device will initially block the passage from the nozzle 59 to the chamber 12 and Turn off the gas stove. Later, if the gas storage barrel is also exposed to, for example, the radiant heat of a frying pan, and the internal pressure of the gas storage barrel exceeds the deformation threshold or the explosion threshold, the internal pressure of the gas storage barrel will be greater than the elastic member 8 8 Tension, at this time, the sealing rod 82 will move downward so that the sealing member 86 can be separated from the gas outlet 72. Since the guide hole 96 of the cap 90 can restrict the moving path of the sealing rod 82, the sealing rod 82 can move smoothly. The description of Figs. 7 to 9 is based on the example of a portable gas furnace having a passage blocking safety device. However, a description similar to the above can also be applied to a portable gas furnace with a bucket separation safety device. When the gas storage barrel is exposed to excessive radiant heat and the internal pressure of the gas storage barrel rises above a dangerous value, the storage barrel separation safety device will initially separate the gas storage barrel from the control valve 4 and cut off the gas supply. After that, if the gas storage barrel is also exposed to, for example, the radiant heat of a frying pan, and the internal pressure of the gas storage barrel exceeds the deformation threshold or the explosion threshold, the deformable part 3 a of the gas storage barrel will expand. And it will contact the control valve 4 tightly. At this time, if the internal pressure of the gas storage bucket is greater than the tension of the elastic member 88, the sealing rod 82 will move downward so that the sealing member 86 will be separated from the gas outlet 72.

10412pif.ptd Page 26 593928 V. Description of the invention (22) By opening the gas outlet 72, the gas can pass through the gas outlet 72 and the sealed chamber 74 of the main body 70, so that the gas can be released through the release hole 98. Since the outer surface of the cap 90 is separated from the ground, the gas can be smoothly released through the release hole 98 of the cap 90. After the gas is released from the gas storage barrel, the internal pressure of the gas storage barrel can return to a normal state, and by the tension of the elastic member 88, the sealing rod 8 is closed and moved so that the sealing member 86 will block the gas outlet. 72 to avoid tile ^^^ coming out. As described above ', the switching element 80 can release gas from the gas storage tank, and when the internal pressure of the gas storage tank is too large, the switching element 80 will automatically operate to avoid the explosion of the gas storage tank. Please refer to the second embodiment shown in FIG. 10 and FIG. 11. In the “like” / case, the operation system of the burst preventer of the portable gas furnace is as described in the above-mentioned first embodiment. When the gas storage barrel is exposed to excessive radiant heat and the internal pressure of the gas storage barrel rises above a dangerous value, the storage barrel separation safety device will initially separate the gas storage barrel from the control valve 4 and cut off the gas supply . After that, if the gas storage barrel is also subjected to, for example, fried noodles, the internal pressure of the gas storage barrel rises above the deformation threshold or explosion threshold, the deformable portion 3 a of the gas storage barrel will expand. , And will contact the control valve 4 closely. At this time, if the internal pressure of the gas storage bucket continues to increase and is greater than the tension of the elastic member 18, the sealing rod 18 2 will move downwards so that the sealing member 1 8 6 will be separated from the gas outlet 17 2. By opening the gas outlet 172, the gas can pass through the gas outlet 172 and the sealed chamber 174 of the main body 170, so that the gas can be released through the release hole 198. When the gas is released from the gas storage barrel, the gas is stored

l〇412pif.ptd Page 27 593928 V. Description of the invention (23) ------ Inside the barrel, the force can return to the normal state, and by the tension of the elastic member 1 8 8, the sealing rod 1 8 2 It will move upwards so that the sealing member 1 8 6 will block the gas outlet 172 to prevent gas from being released. As mentioned above, the gas can be released from the gas storage tank by opening the "close element 1 0 0", and when the internal pressure of the gas storage tank is too large, the switching element 丨 8 will automatically operate ^ to avoid gas storage The barrel exploded. Please refer to the third embodiment shown in FIG. 12. Under normal circumstances, the operation system of the burst preventer of the gas furnace is as described in the aforementioned first and second embodiments. When the gas storage barrel is exposed to excessive radiant heat and the internal pressure of the gas & storage barrel rises above a dangerous value, the safety separation of the storage barrel will initially separate the gas storage barrel from the control valve 4 and cut off the gas. Supply. After that, if the gas storage barrel is also exposed to, for example, the radiant heat of a frying pan = when the internal pressure of the gas storage barrel exceeds the deformation threshold or the explosion threshold, the deformable part 3a of the gas storage barrel will expand, and会 Primarily contact the control valve 4. At this time, if the internal pressure of the gas storage bucket continues to increase and is greater than the tension of the elastic member 2 8 8, the sealing rod 2 8 2 will move downward to separate the Fuzhi sealing member 2 8 6 from the gas outlet 2 7 2, of which The elastic furnace member 288 is, for example, an elastic piece. By opening the gas outlet 272, the gas can pass through the gas outlet 272 and the sealed chamber 274 of the main body 270, so that the gas can be released through the release hole 2 70a. After the gas is released from the gas storage barrel, the internal pressure of the gas storage barrel can return to a normal, state. With the tension of the elastic member 2 8 8, the sealing rod 282 will move upwards so that the sealing member 286 will block the gas. Exit 2 7 2 to avoid gas release. As mentioned above, by switching

10412pif.ptd Page 28 593928 V. Description of the invention (24) Element 280 can release gas from the gas storage barrel, and when the internal pressure of the gas storage barrel is too large, the switching element 2 80 will automatically operate to avoid gas An explosion in a storage barrel. Please refer to the fourth embodiment shown in FIG. 13. Under normal circumstances, the operation of the burst preventer of the portable gas furnace is as described in the first to third embodiments. When the gas storage barrel is exposed to excessive radiant heat and the internal pressure of the gas storage barrel rises above a dangerous value, the storage barrel separation safety device will initially separate the gas storage barrel from the control valve 4 and cut off the gas supply. After that, if the gas storage barrel is also subjected to, for example, the radiant heat of a frying pan, and the internal pressure of the gas storage barrel rises above the deformation threshold or the explosion threshold, the deformable part 3 a of the gas storage barrel will Expansion and will come into close contact with the control valve 4. At this time, if the internal pressure of the gas storage bucket continues to increase and is greater than the tension of the elastic member 3 8 8, the sealing rod 3 8 2 will move downward so that the sealing member 3 8 6 will be separated from the gas outlet 3 7 2. By opening the gas outlet 372, the gas can pass through the gas outlet 372 and the sealed chamber 3 7 4 so that the gas can be released through the release hole 3 9 8. When the gas is released from the gas storage barrel, the internal pressure of the gas storage barrel can return to a normal state, and by the tension of the elastic member 3 8 8, the sealing rod 3 8 2 will move upward so that the sealing member 386 will block the gas Exit 3 7 2 to avoid gas release. As mentioned above, the switching element 3 8 0 can release gas from the gas storage barrel, and when the internal pressure of the gas storage barrel is too large, the switching element 3 8 0 will automatically operate to prevent the gas storage barrel from exploding. situation. As mentioned above, if the gas storage barrel receives radiant heat from, for example, a frying pan, the internal pressure of the gas storage barrel continues

10412pif.ptd Page 29 593928 V. Description of the invention (25) When the gas is raised, the gas will be automatically released to avoid the explosion of the gas storage tank. In the fourth embodiment, since the sealing portion 3 8 6 b of the sealing member 3 8 6 can be moved upward or downward, when adjusting the elastic force of the elastic member 3 8 8 or when assembling the sealing rod 3 8 2 The sealing member 3 8 6 can closely contact the gas outlet 372 having a flat surface without being deformed, so that the switching element 3 8 0 can seal the gas outlet 3 7 2. In the second to fourth embodiments, the portable gas furnace shown in Figs. 10 to 13 is provided with a bucket separation safety device. However, those skilled in the art should be able to infer from the description of the first embodiment that the portable gas stoves of the second to fourth embodiments can also be provided with a channel blocking safety device. Therefore, according to the explosion preventer of the portable gas furnace according to the present invention, when the internal pressure of the gas storage barrel is too large, the switching element will automatically operate and release the gas, so as to avoid the explosion of the gas storage barrel. In this way, the safety and quality of the product can be greatly improved. In addition, since the burst preventer of the present invention can be deployed on portable gas stoves that are already popular in the market, and its structure is very simple, the burst preventer of the present invention has excellent compatibility and is in manufacturing. It's easy. Furthermore, since the burst preventer is one of a plurality of legs of a portable gas furnace, the manufacturing process can be simplified. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art will not depart from the essence of the present invention.

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10412pif.ptd Page 31 593928 Brief Description of Drawings Figure 1 shows the structure of a conventional portable gas stove. Fig. 2 is a schematic plan view showing the gas storage barrel in Fig. 1 being removed from the gas furnace or installed in the gas furnace. Figure 3 shows a schematic plan view of the gas storage barrel in close contact with the control valve during deformation. Fig. 4 is a schematic side sectional view of a portable gas furnace of the conventional channel blocking type. FIG. 5 is a schematic front view of the portable gas furnace in FIG. 4. Fig. 6 shows a front view of a burst preventer of a conventional portable gas furnace. FIG. 7 is an exploded perspective view of the explosion preventer of the portable gas furnace according to the first preferred embodiment of the present invention. FIG. 8 is a schematic front view of the burst preventer in FIG. 7. FIG. 9 is a schematic side view of the burst preventer in FIG. 7. Fig. 10 is a schematic three-dimensional view showing the explosion of the burst preventer of the portable gas furnace according to the second preferred embodiment of the present invention. FIG. 11 is a schematic side view of the burst preventer in FIG. 10. Figure 12 shows a schematic side view of a burst preventer for a portable gas furnace according to a third preferred embodiment of the present invention. Figure 13 shows a schematic side view of a burst preventer of a portable gas furnace according to a fourth preferred embodiment of the present invention. Drawing number description 1: Portable gas stove

10412pif. Ptd Page 32 593928 Brief description of the drawing a 4 a Disassembly rod gas storage barrel: deformable part control valve: gas inlet storage barrel guide Mars plug lever rod furnace cover 11:: main body 11a: tj 12 capacity Chamber 14 Control lever 30 Pressure control device 31 Rubber sheet 32 Spring 33 Needle carrier 34 Load block 35 Needle valve 50 Gas blocking device 51 Hole 52 Round hole 53 Blocking valve

10412pif.ptd Page 33 593928 Brief description of the diagram 54 Disc spring 55 Return valve 56 Return lever 57 Blocking part 58 Operating part 59 Nozzle 60 Gas release unit 6 1 Housing 61a: Through hole 61b: Release hole 6 2 :: Spring 63:: Safety lever 6 3a: Piston part 63b: Sealing part 64 Round hole 65 Dome 66 Nozzle 70 Body 72 Gas out V 74 Sealing chamber 80 Switch element 82 Sealing rod 84 Round support plate 86 Sealing member

10412pif. Ptd Page 34 593928 Brief description of the drawing 8 8: Elastic member 9 0: Cap 90a: Protruding foot 9 2: Joint portion 9 4: Support portion 96: Guide hole 9 8: Release hole 1 70: Main body 1 7 2: Gas outlet 1 7 4: Sealing chamber 1 8 0: Switching element 1 8 2: Sealing rod 1 8 4: Round support plate 1 8 4 a: Protruding block 1 8 6: Sealing member 1 8 6 a: Engagement hole 1 8 8: Elastic member 19 0: Cap 1 90 a: Protruding foot 1 9 2: Joint portion 1 9 2 a: Convex portion 1 9 4: Support portion 1 9 8: Release hole 270: main body

10412pi f. Ptd Page 35 593928 Brief description of the drawing 2 7 0 a: Release hole 272 Gas output 〇274 Sealing chamber 280 Switch element 282 Sealing rod 284 Circular support plate 286 Sealing member 288 Elastic member 290 Cap 292 Joint portion 2 9 2 a: support tj 294 support part 370 main body 372 gas outlet 374. Seal chamber 380 switch element 382 seal rod 3 8 2 a: support t 1 384:: circular support disc 386: seal member 3 8 6a: Inverted cone-shaped support portion 3 8 6b z seal portion 3 8 8:: elastic member 3 9 0:: cap

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Claims (1)

593928 VI. Scope of patent application 1. A burst preventer for a portable gas stove, comprising a storage barrel separation safety device or a passage blocking safety device. In the case that the burst prevention device is equipped with the storage barrel separation safety device, When the internal pressure of a gas storage barrel reaches a dangerous value, the storage barrel separation safety device will be automatically separated from the gas storage barrel, thereby blocking the gas passage and extinguishing the fire, and the burst preventer is equipped with the passage resistance In the case of a safety device being broken, when the internal pressure of a gas storage barrel reaches a dangerous value, the passage blocking safety device will block the gas passage, thereby extinguishing the fire, and the gas storage barrel is also engaged in the passage to block On the safety device, the explosion preventer of the portable gas furnace further includes: a main body including a gas outlet and a sealed chamber, the gas outlet is connected with a gas inlet of a control valve, and the sealed chamber is connected with the gas inlet The gas outlet is connected; a switching element is assembled in the sealed chamber of the main body, and when the internal pressure of the gas storage barrel exceeds one When the variable threshold value, the switching element can elastically move up and down, so that the gas outlet may be maintained in the open state, thereby releasing gas; and a cap, fitted at the bottom end of the body, thereby supporting the switching element. 2. The burst preventer of the portable gas furnace according to item 1 of the scope of patent application, wherein the switching element includes a sealing rod, a sealing member and an elastic member, and the sealing rod is mounted on the seal of the main body. Indoor, and the sealing rod can be moved up and down, and the sealing rod has a support plate located at the top of the sealing rod, and the sealing member is assembled on the circular support plate, 10412pif.ptd Page 38 593928 6. Scope of patent application To open or close the gas outlet, the elastic member is used to support the sealing rod so that the sealing rod can move up and down. 3. The burst preventer of the portable gas furnace according to item 2 of the scope of patent application, wherein the support disc includes a protruding block protruding from the support disc, the sealing member has an engaging hole, and the support The protruding block of the disc is inserted into the engaging hole. 4. The burst preventer of the portable gas furnace according to item 1 of the scope of the patent application, wherein the switching element includes a sealing rod, a sealing member and an elastic member, and the sealing rod is mounted on the seal of the main body. Indoor, and can be moved up and down, the sealing rod has a support plate and a support port, the support disk is located at the upper part of the seal rod, the support mouth is located at the top of the seal rod, and the support mouth is an inverted cone shape The sealing member includes a supporting portion and a sealing portion. The supporting portion is an inverted conical shape and is arranged at the bottom of the sealing member. The supporting opening can accommodate the supporting portion. The upper part has a notch, the sealing part is fixed in the notch of the support part, and the gas outlet of the main body can be opened or closed, and the elastic member is used for supporting the sealing rod, so that the sealing rod can move up and down . 5. The burst preventer of the portable gas furnace according to item 1 of the scope of the patent application, wherein the switching element includes a sealing rod, a sealing member and an elastic member, and the sealing rod is mounted on the seal of the main body. Indoor, and can be moved up and down, the sealing rod has a supporting plate and a conical top, the supporting disk is located at the upper part of the sealing rod, the sealing member includes a supporting portion and a sealing portion, and the supporting portion has a conical shape Support port, by which the seal 10412pi f.ptd Page 39 593928 6. The top of the patent application rod can support the sealing member, and the upper part of the sealing member has a notch, the sealing part is fixed in the notch of the supporting part, and can be opened Or closing the gas outlet of the main body, the elastic member is used to support the sealing rod so that the sealing rod can move up and down. 6. The burst preventer of the portable gas furnace according to item 2, 3, 4, or 5 of the scope of patent application, wherein the elastic member is a compression spring and the top end of the elastic member is It is in contact with the bottom of the support plate and fixed, and the elastic force of the elastic member is less than the explosion pressure of the storage barrel. .7. The burst preventer of the portable gas furnace as described in the scope of the patent application for items 2, 3, 4, or 5, wherein the elastic member is a disc-shaped elastic sheet and the elastic member is positioned At the bottom end of the seal rod. 8. The burst preventer of the portable gas furnace according to item 1 of the scope of patent application, wherein the cap includes a joint portion and a supporting portion, and the cap is detachable by the joint portion. The ground is screwed to the bottom of the main body to support the bottom of the elastic member, and the supporting portion is engaged with the joint portion, so that a user can grasp the cap and rotate the cap. 9. The burst preventer of the portable gas furnace according to item 1 of the scope of patent application, wherein the cap includes a guide hole, is located in a middle region of the cap, and passes through the cap along an axial direction. A cap, and the bottom of the sealing rod can be inserted into the guide hole. I 0. The burst preventer of the portable gas furnace according to item 1 of the scope of the patent application, wherein the cap includes at least one release hole for releasing gas flowing through the gas outlet. II. Explosion of the portable gas stove as described in item 8 of the scope of patent application 10412pif.ptd Page 40 593928 6. Scope of patent application Crack prevention device, wherein the joint part of the cap includes a convex part to fix the elastic member. 1 2. The burst preventer of the portable gas furnace as described in item 8 of the scope of the patent application, wherein the joint portion of the cap includes a socket to fix the elastic member therein. 1 3. The burst preventer of the portable gas furnace according to item 1 of the scope of the patent application, wherein the cap supports the bottom of the elastic member, and the cap includes at least one release hole extending longitudinally and formed On the inner wall of the cap, the gas in the gas storage bucket is released. 14. The burst preventer of the portable gas furnace according to item 10 or item 13 of the scope of patent application, wherein the cap includes at least one protruding foot, which is arranged on the bottom surface of the cap, thereby Prevent the release hole from being blocked by the ground. 15. The burst preventer of the portable gas stove as described in item 1 of the scope of the patent application, wherein the main system is used as a stand for supporting the portable gas stove. 16 · The burst preventer of the portable gas furnace according to item 1 of the scope of patent application, wherein the main body further includes a release hole communicating with the sealed chamber, and the release hole is located at a lower position of the main body So that the gas can be quickly released from the gas storage cylinder. 10412pif.ptd Page 41