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EP3516289A1 - Safety valve with metal elements for gas cartridge - Google Patents

Safety valve with metal elements for gas cartridge

Info

Publication number
EP3516289A1
EP3516289A1 EP17835497.3A EP17835497A EP3516289A1 EP 3516289 A1 EP3516289 A1 EP 3516289A1 EP 17835497 A EP17835497 A EP 17835497A EP 3516289 A1 EP3516289 A1 EP 3516289A1
Authority
EP
European Patent Office
Prior art keywords
cartridge
gas
valve
hollow body
jacket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17835497.3A
Other languages
German (de)
French (fr)
Other versions
EP3516289B1 (en
Inventor
Andreas VRISANAKIS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Camper Gaz SA Vrisanakis
Original Assignee
Camper Gaz SA Vrisanakis
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GR20170200047U external-priority patent/GR2003110Y/en
Priority claimed from GR20170100146A external-priority patent/GR1009358B/en
Application filed by Camper Gaz SA Vrisanakis filed Critical Camper Gaz SA Vrisanakis
Priority to EP20213629.7A priority Critical patent/EP3825598A1/en
Publication of EP3516289A1 publication Critical patent/EP3516289A1/en
Application granted granted Critical
Publication of EP3516289B1 publication Critical patent/EP3516289B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/06—Closures, e.g. cap, breakable member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0114—Shape cylindrical with interiorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/058—Size portable (<30 l)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/018—Supporting feet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0311—Closure means
    • F17C2205/032—Closure means pierceable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0382—Constructional details of valves, regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0391—Arrangement of valves, regulators, filters inside the pressure vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/011—Improving strength
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/036—Avoiding leaks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use
    • F17C2270/0709—Camping gas

Definitions

  • the invention relates to a cartridge for storing liquefied gas under pressure, such as butane or propane - LPG.
  • liquefied gas under pressure such as butane or propane - LPG.
  • These cartridges may be connected to combustion devices, i.e. gas burners, and have various uses such as preparing coffee, boiling water or other liquids, roasting food, connected to equipment for illumination.
  • Known cartridges have various dimensions and capacities usually ranging from 190 gr. to 500 gr.
  • One known type of cartridge is connected to the combustion devices by piercing.
  • Other known cartridges for storing gas include a container for storing the gas and a valve, which connects the cartridge to the combustion device. In operation the cartridges provide through their valve evaporated gas to the combustion devices, which are safely connected therewith.
  • valve of cartridges with valve is provided with a thread in order to screw the cartridge to combustion devices, which are provided with complementary thread. Alternatively, they receive combustion devices clasping thereon. Cartridges with valve may be refilled through the valve.
  • the combustion devices that are to be used with pierceable cartridges are equipped with a piercing element configured to penetrate the wall of the pierceable cartridge in an appropriate position.
  • the hole that is made by the piercing element forms the outlet for the gas, which flows from the cartridge to the combustion device.
  • the pieceable cartridges have a flow limiter device to prohibit substantial flow of the gaz, in case the combustion device is removed after it pierces the cartridge.
  • the pierceable cartridges are not refillable.
  • Combustion devices may be also connected to covers shown in Figure 1. When using such systems, the user inserts a cartridge within the cover. Such assemblies of combustion devices with covers are used with pierceable cartridges.
  • Document FR 1.433.490 discloses a pierceable cartridge with flow limiter.
  • the flow limiter has a cylindrical body with an end base fitted to the inner side of the wall of the cartridge.
  • the end base has an inlet for the gas and the other end of the cylinder, opposite to the end base has a gas outlet.
  • Document US 4,971 ,224 discloses a cartridge with a valve that may be used with a combustion device with a piercing element which may penetrate cartridges storing gas.
  • the invention refers to a cartridge for storing liquefied gas under pressure comprising a container with an opening and a valve fitted in said opening for controlling the flow of gas outwards from the cartridge, whereby the valve has a jacket that is fitted to the container, which jacket encloses a hollow body with an inlet for the gas that is stored in the cartridge and an outlet for the gas when the gas flows outwards from the cartridge, which body has in its interior a movable element, configured to move between a position that allows the flow of the gas outwards from the cartridge and a position that does not allow the flow of the gas outwards from the cartridge.
  • An object of the present invention is a cartridge with a valve that may be used with safety with combustion devices having a piercing element and secures a smooth flow of the gas from the cartridge to the combustion device.
  • a further object of the present invention is a cartridge with high safety level with regard to liquefied gas leakage and to the robustness and strength of the valve in economical and efficient manner.
  • a further object of the invention is a cartridge satisfying the safety requirements of relevant European norms.
  • a further object of the invention is a cartridge and a combustion device that are co-operating safely and permitting a flawless flow of the gas from the cartridge to the combustion device.
  • the object of the invention is achieved by incorporating to a cartridge a valve, whose hollow body has one end that is within the container, which end is sealed with a bottom that does not allow the flow of the gas from the said end towards the interior of the hollow body.
  • a bottom that seals the end of the hollow body does not allow the flow of gas either in liquid of gaseous form within the hollow body.
  • Such a bottom is solid, fluid-proof and impermeable and ensures a flawless flow of the fluid without causing clogging of the valve.
  • the movable element is a metal ball.
  • a bottom that seals the end of the hollow body and a metal ball preferably from stainless steel, maximizes the advantages offered by the invention and the lifetime of unobstructed operation of the valve.
  • the inlet for the gas is configured in the side wall of the tubular body and above its bottom, i.e. towards the jacket.
  • the hollow body has four almost parallel slots.
  • the slots may have a length between 6 millimeters and 10 millimeters and a width between 1 millimeter and 2 millimeters. Other shapes and dimensions of the inlet are anticipated within the scope of the invention.
  • the perimeter of the bottom may coincide either with the inner or the outer perimeter of the side wall. In any case the flow of the gas through the bottom is not possible.
  • the hollow body may be made of plastic by casting or by attaching the side wall or parts of the side wall to the bottom.
  • the hollow body has in its interior a restoring element from stainless steel that pushes the movable element towards the position that does not allow the flow of the gas outwards from the cartridge.
  • the restoring element is a helical spring.
  • Two sealing elements may be used to ensure the sealing of connections of valve elements: a first sealing element is provided between the jacket and the container and/or a second sealing element is provided between the jacket and the body.
  • the jacket may be made from tinplate.
  • Figure 1 shows a combustion device
  • Figure 2 shows a cartridge
  • Figure 3 shows a section of the valve.
  • Figure 4 shows a section of the valve fitted to the cartridge.
  • Figure 5 shows the solid and liquid-tight bottom of the bottom of a valve according to the invention.
  • Figure 6 shows a cross section of the hollow body of the valve looking towards the bottom.
  • Figure 7 shows a cross section of an alternative hollow body of the valve looking towards the bottom.
  • Figure 8 shows schematically the hollow body of a further embodiment.
  • FIG. 1 and Figure 2 show and the combustion device 70 and the cartridge 60 respectively.
  • the combustion device 70 is connected to a housing 75, where the user may put a cartridge 60.
  • the cartridge includes a container 67 with an opening 65, where a valve 30 is fitted.
  • the valve 30 controls the flow of the gas from the interior of the cartridge 60 through the valve 30 towards the outer space or the combustion device 70
  • the combustion device 70 has a head 73 with an elongated element, which acts on the valve 30 and causes the flow of the gas through it.
  • Figure 3 shows a section of the valve 30
  • Figure 4 shows a section of the valve 30 fitted to the cartridge 60.
  • the container 67 has a casing 61 , a base 62 and a cover 63, which is opposite to the base 62.
  • the cover 63 has an opening 65 defined by an edge 68 as it is schematically shown in Figure 4.
  • the valve 30 controlling the flow of the gas outwards from the interior of the cartridge 60 is fitted to the opening 65.
  • the casing 61 and the base 62 may be an integral single element or two elements attached to each other.
  • the casing 61 , the base 62 and the cover 63 form the container 67 and define the storage space for the liquefied gas.
  • the valve 30 has a cylindrical or almost cylindrical jacket 31 , which fits in an impermeable manner around the edge 68 of the cover 63.
  • the valve 30 allows the flow of gas, through the valve 30 towards the combustion device 70.
  • the valve 30 prohibits the flow of the gas from the interior of the cartridge 60 through the valve 30 towards the outer space
  • the cylindrical or almost cylindrical jacket 31 of the valve 30 is opened at its both ends.
  • the one end of the jacket 31 has a lip that extends outwards, i.e. in the direction which is opposite to the direction towards the axis of the cylindrical or almost cylindrical jacket 31.
  • the lip of the jacket 31 fits in an impermeable manner around the edge 68, which defines the opening 65 in the cover 63.
  • the edge 68 is folded about and presses the lip of the jacket 31 from both sides.
  • the jacket 31 encloses in its interior the hollow body 34 of the valve 31.
  • the body 34 of the valve 30 has a cylindrical or almost cylindrical side wall around an axis that coincides or almost coincides with the axis of cylindrical or almost cylindrical jacket 31.
  • the body 34 has an end that projects from the jacket 31 , in which it is enclosed and trapped. This end of body 34 is located within the space defined by the container 67 and it is sealed by an impermeable bottom 38, so that neither liquid nor gas may flow through it.
  • the bottom 38 is not in contact with the gas, even when the cartridge 60 is full.
  • the bottom 38 may contact the gas when the cartridge is moved and/or the cartridge 60 is on surface, which is slightly inclined with respect to the horizontal. However, as the bottom 38 has neither openings nor perforations and is impermeable, see Figures 3 to 7, the bottom 38 prohibits the flow of the gas from the cartridge 60 towards the interior of the body 34 of valve 30.
  • the other end of the body 34 presses a sealing insert 33 towards a flange, which is formed at the end of the jacket 31.
  • the flange is directed in the opposite direction from the lip, towards the interior of the jacket 31.
  • Figures 6 and 7 show alternatives bottoms 38 of the hollow body 34.
  • the bottom 38 presented in Figure 6 and Figure 4 has a perimeter that coincides with the outer perimeter of the side wall and the bottom 38 presented in Figure 7 and Figure 5 has a perimeter that coincides with the inner perimeter of the side wall.
  • the diameter of the bottom equals the outer diameter of the side wall in the embodiments of Figures 6 and 4 and the inner diameter of the side wall in the embodiments of Figures 7 and 5.
  • An inlet 39 and an outlet for the gas are formed in the body 35 of the valve 30.
  • the inlet is formed in the cylindrical wall of the body 34 and it is at least one opening.
  • the inlet of the valve is four slots along the cylindrical wall. Two of these slots are shown by dotted lines in Figure 3.
  • the slots of the embodiment have a length of 7.4 mm and their width equals to 1 .4 mm.
  • the slots of this embodiment are solely one example of the inlet 39. Other shapes and dimensions of the inlet are anticipated within the scope of the invention.
  • the outlet is at the end of the body 34, which is inside the jacket 31 and opposite to the bottom 38.
  • a sealing insert 33 between the body 34 and the jacket 31 may be provided at the end of the body 34, where the outlet is formed, to ensure a fluid-tight connection of the body 34 and the jacket 31.
  • the inlet 39 is above the bottom 38, i.e. in the side wall towards the jacket 31.
  • the body 34 may be manufactured either as one body by molding as shown or formed by attaching four longitudinal portions, flaps, of a cylindrical side wall to a bottom 38. In both cases, the inlet 39 is formed between four the longitudinal portions of the side wall.
  • Example of the valve 30 with the hollow body 34 is shown in Figure 8.
  • a movable element 35 and a restoring element 36 are provided within the hollow body 34 of the valve 30.
  • the restoring element 36 acts between the inner side of the bottom 38 and the movable element 35.
  • the movable element 35 is a metal ball, preferably made of stainless steel and the restoring element 36 a linear spring, preferably made of stainless steel.
  • the ball is solely under the action of the spring, i.e. it is not forced by a force towards the bottom 35, the ball is forced and pushed towards the open end of the body 34.
  • the ball and the sealing element 33 block the outlet of the valve 30, thus prohibiting the gas to flow from the cartridge 60, through the valve 30, to the outer space.
  • Cartridges according to the invention may have various capacities, for example 190 g, 500 g, etc. and may be used with combustion devices, which are fitted to pierceable cartridges or to cartridges with a valve.
  • the cartridge of 190 g with the valve is appropriate for use with a combustion device with piercing element for pierceable cartridges, which are in accordance with the European standard EN 521.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

A cartridge (60) for storing liquefied gas under pressure comprises a container (67) and a valve (30). The valve (30) has a jacket (31) fitted to the container (67), which encloses a hollow body (34) with an inlet (39) and an 5 outlet. The hollow body (34) has in its interior a movable element (35) moving between a position that allows the flow of the gas outwards from the cartridge (60) and a position that does not. The hollow body (34) has one end that is within the container (67) and sealed with a bottom (38) that does not allow the flow of the gas from the said end towards the interior of the hollow body 0 (34). The bottom (38) does not allow the flow of gas either in liquid of gaseous form within the hollow body and ensures a flawless flow of the fluid without causing clogging of the valve.

Description

Safety valve with metal elements for gas cartridge
[0001] The invention relates to a cartridge for storing liquefied gas under pressure, such as butane or propane - LPG. These cartridges may be connected to combustion devices, i.e. gas burners, and have various uses such as preparing coffee, boiling water or other liquids, roasting food, connected to equipment for illumination.
[0002] Known cartridges have various dimensions and capacities usually ranging from 190 gr. to 500 gr. One known type of cartridge is connected to the combustion devices by piercing. Other known cartridges for storing gas include a container for storing the gas and a valve, which connects the cartridge to the combustion device. In operation the cartridges provide through their valve evaporated gas to the combustion devices, which are safely connected therewith.
[0003] The valve of cartridges with valve is provided with a thread in order to screw the cartridge to combustion devices, which are provided with complementary thread. Alternatively, they receive combustion devices clasping thereon. Cartridges with valve may be refilled through the valve.
[0004] The combustion devices that are to be used with pierceable cartridges are equipped with a piercing element configured to penetrate the wall of the pierceable cartridge in an appropriate position. The hole that is made by the piercing element forms the outlet for the gas, which flows from the cartridge to the combustion device. The pieceable cartridges have a flow limiter device to prohibit substantial flow of the gaz, in case the combustion device is removed after it pierces the cartridge. The pierceable cartridges are not refillable. [0005] Combustion devices may be also connected to covers shown in Figure 1. When using such systems, the user inserts a cartridge within the cover. Such assemblies of combustion devices with covers are used with pierceable cartridges. [0006] Document FR 1.433.490 discloses a pierceable cartridge with flow limiter. The flow limiter has a cylindrical body with an end base fitted to the inner side of the wall of the cartridge. The end base has an inlet for the gas and the other end of the cylinder, opposite to the end base has a gas outlet.
[0007] Document US 4,971 ,224 discloses a cartridge with a valve that may be used with a combustion device with a piercing element which may penetrate cartridges storing gas.
[0008] The invention refers to a cartridge for storing liquefied gas under pressure comprising a container with an opening and a valve fitted in said opening for controlling the flow of gas outwards from the cartridge, whereby the valve has a jacket that is fitted to the container, which jacket encloses a hollow body with an inlet for the gas that is stored in the cartridge and an outlet for the gas when the gas flows outwards from the cartridge, which body has in its interior a movable element, configured to move between a position that allows the flow of the gas outwards from the cartridge and a position that does not allow the flow of the gas outwards from the cartridge.
[0009] An object of the present invention is a cartridge with a valve that may be used with safety with combustion devices having a piercing element and secures a smooth flow of the gas from the cartridge to the combustion device. A further object of the present invention is a cartridge with high safety level with regard to liquefied gas leakage and to the robustness and strength of the valve in economical and efficient manner. A further object of the invention is a cartridge satisfying the safety requirements of relevant European norms. A further object of the invention is a cartridge and a combustion device that are co-operating safely and permitting a flawless flow of the gas from the cartridge to the combustion device.
[0010] The object of the invention is achieved by incorporating to a cartridge a valve, whose hollow body has one end that is within the container, which end is sealed with a bottom that does not allow the flow of the gas from the said end towards the interior of the hollow body.
[001 1] A bottom that seals the end of the hollow body does not allow the flow of gas either in liquid of gaseous form within the hollow body. Such a bottom is solid, fluid-proof and impermeable and ensures a flawless flow of the fluid without causing clogging of the valve.
[0012] Dependent claims define additional features offering further advantages when incorporated to the device according to the invention.
[0013] Preferably the movable element is a metal ball. The combination of a bottom that seals the end of the hollow body and a metal ball, preferably from stainless steel, maximizes the advantages offered by the invention and the lifetime of unobstructed operation of the valve.
[0014] The inlet for the gas is configured in the side wall of the tubular body and above its bottom, i.e. towards the jacket. In one embodiment the hollow body has four almost parallel slots. The slots may have a length between 6 millimeters and 10 millimeters and a width between 1 millimeter and 2 millimeters. Other shapes and dimensions of the inlet are anticipated within the scope of the invention.
[0015] The perimeter of the bottom may coincide either with the inner or the outer perimeter of the side wall. In any case the flow of the gas through the bottom is not possible. The hollow body may be made of plastic by casting or by attaching the side wall or parts of the side wall to the bottom. [0016] In another embodiment the hollow body has in its interior a restoring element from stainless steel that pushes the movable element towards the position that does not allow the flow of the gas outwards from the cartridge. Optionally the restoring element is a helical spring. [0017] Two sealing elements may be used to ensure the sealing of connections of valve elements: a first sealing element is provided between the jacket and the container and/or a second sealing element is provided between the jacket and the body. The jacket may be made from tinplate.
[0018] Embodiments of the invention are described below, with reference to Figures 1 to 8:
Figure 1 shows a combustion device.
Figure 2 shows a cartridge.
Figure 3 shows a section of the valve.
Figure 4 shows a section of the valve fitted to the cartridge.
Figure 5 shows the solid and liquid-tight bottom of the bottom of a valve according to the invention.
Figure 6 shows a cross section of the hollow body of the valve looking towards the bottom.
Figure 7 shows a cross section of an alternative hollow body of the valve looking towards the bottom.
Figure 8 shows schematically the hollow body of a further embodiment.
[0019] Figure 1 and Figure 2 show and the combustion device 70 and the cartridge 60 respectively. The combustion device 70 is connected to a housing 75, where the user may put a cartridge 60. The cartridge includes a container 67 with an opening 65, where a valve 30 is fitted. When the valve 30 is connected to the cartridge 60, the valve 30 controls the flow of the gas from the interior of the cartridge 60 through the valve 30 towards the outer space or the combustion device 70, The combustion device 70 has a head 73 with an elongated element, which acts on the valve 30 and causes the flow of the gas through it. Figure 3 shows a section of the valve 30 and Figure 4 shows a section of the valve 30 fitted to the cartridge 60.
[0020] The container 67 has a casing 61 , a base 62 and a cover 63, which is opposite to the base 62. The cover 63 has an opening 65 defined by an edge 68 as it is schematically shown in Figure 4. The valve 30 controlling the flow of the gas outwards from the interior of the cartridge 60 is fitted to the opening 65. The casing 61 and the base 62 may be an integral single element or two elements attached to each other. The casing 61 , the base 62 and the cover 63 form the container 67 and define the storage space for the liquefied gas.
[0021] The valve 30 has a cylindrical or almost cylindrical jacket 31 , which fits in an impermeable manner around the edge 68 of the cover 63. When the combustion device 70 is attached to the cartridge 60 the valve 30 allows the flow of gas, through the valve 30 towards the combustion device 70. However, when the combustion device 70 is removed from the cartridge 60, the valve 30 prohibits the flow of the gas from the interior of the cartridge 60 through the valve 30 towards the outer space
[0022] The cylindrical or almost cylindrical jacket 31 of the valve 30 is opened at its both ends. The one end of the jacket 31 has a lip that extends outwards, i.e. in the direction which is opposite to the direction towards the axis of the cylindrical or almost cylindrical jacket 31. The lip of the jacket 31 fits in an impermeable manner around the edge 68, which defines the opening 65 in the cover 63. For an effective fitting of the valve 30 to the cartridge 60, the edge 68 is folded about and presses the lip of the jacket 31 from both sides.
[0023] The jacket 31 encloses in its interior the hollow body 34 of the valve 31. The body 34 of the valve 30 has a cylindrical or almost cylindrical side wall around an axis that coincides or almost coincides with the axis of cylindrical or almost cylindrical jacket 31. The body 34 has an end that projects from the jacket 31 , in which it is enclosed and trapped. This end of body 34 is located within the space defined by the container 67 and it is sealed by an impermeable bottom 38, so that neither liquid nor gas may flow through it. Usually, when the free surface of the liquefied gas is horizontal, the bottom 38 is not in contact with the gas, even when the cartridge 60 is full. The bottom 38 may contact the gas when the cartridge is moved and/or the cartridge 60 is on surface, which is slightly inclined with respect to the horizontal. However, as the bottom 38 has neither openings nor perforations and is impermeable, see Figures 3 to 7, the bottom 38 prohibits the flow of the gas from the cartridge 60 towards the interior of the body 34 of valve 30. The other end of the body 34 presses a sealing insert 33 towards a flange, which is formed at the end of the jacket 31. The flange is directed in the opposite direction from the lip, towards the interior of the jacket 31. The jacket 31 may be manufactured from a tinplate tube. The tube may be folded, so that the jacket has a double wall and the flange and lip are at the same end of the jacket 31. In one example, the thickness of the tinplate that is used to manufacture the jacket is approximately 0.32 mm (1 mm = 0.001 meter).
[0024] Figures 6 and 7 show alternatives bottoms 38 of the hollow body 34. The bottom 38 presented in Figure 6 and Figure 4 has a perimeter that coincides with the outer perimeter of the side wall and the bottom 38 presented in Figure 7 and Figure 5 has a perimeter that coincides with the inner perimeter of the side wall. As the bottom and the cross section side wall of these embodiments are circular, the diameter of the bottom equals the outer diameter of the side wall in the embodiments of Figures 6 and 4 and the inner diameter of the side wall in the embodiments of Figures 7 and 5.
[0025] An inlet 39 and an outlet for the gas are formed in the body 35 of the valve 30. The inlet is formed in the cylindrical wall of the body 34 and it is at least one opening. In the embodiment shown in Figure 3, the inlet of the valve is four slots along the cylindrical wall. Two of these slots are shown by dotted lines in Figure 3. The slots of the embodiment have a length of 7.4 mm and their width equals to 1 .4 mm. The slots of this embodiment are solely one example of the inlet 39. Other shapes and dimensions of the inlet are anticipated within the scope of the invention. The outlet is at the end of the body 34, which is inside the jacket 31 and opposite to the bottom 38. As already mentioned, a sealing insert 33 between the body 34 and the jacket 31 may be provided at the end of the body 34, where the outlet is formed, to ensure a fluid-tight connection of the body 34 and the jacket 31. In general, the inlet 39 is above the bottom 38, i.e. in the side wall towards the jacket 31. [0026] The body 34 may be manufactured either as one body by molding as shown or formed by attaching four longitudinal portions, flaps, of a cylindrical side wall to a bottom 38. In both cases, the inlet 39 is formed between four the longitudinal portions of the side wall. Example of the valve 30 with the hollow body 34 is shown in Figure 8. [0027] A movable element 35 and a restoring element 36 are provided within the hollow body 34 of the valve 30. The restoring element 36 acts between the inner side of the bottom 38 and the movable element 35. In the embodiment of Figures 3 and 4, the movable element 35 is a metal ball, preferably made of stainless steel and the restoring element 36 a linear spring, preferably made of stainless steel. When the ball is solely under the action of the spring, i.e. it is not forced by a force towards the bottom 35, the ball is forced and pushed towards the open end of the body 34. When at this position the ball and the sealing element 33 block the outlet of the valve 30, thus prohibiting the gas to flow from the cartridge 60, through the valve 30, to the outer space.
[0028] When the combustion device 70 is attached to the cartridge 60, the appropriate element of the head 73 of the combustion device 70 forces the movable element 36 towards the bottom of the valve, compressing the restoring element. When in this position the outlet is free and the gas may flow from the cartridge 60 through the valve 30 towards the combustion device 70.
[0029] The use of a valve with a metallic movable element in combination with the fluid-tight bottom maximizes the advantages offered by the invention and result in a highly flawless and safe operation of the cartridge.
[0030] Cartridges according to the invention may have various capacities, for example 190 g, 500 g, etc. and may be used with combustion devices, which are fitted to pierceable cartridges or to cartridges with a valve. In particular the cartridge of 190 g with the valve is appropriate for use with a combustion device with piercing element for pierceable cartridges, which are in accordance with the European standard EN 521.
[0031] List of reference signs
30 valve
31 jacket of the valve
32 first sealing element
33 second sealing element
34 hollow body
35 movable element
36 restoring element
38 bottom of hollow body
39 inlet
60 cartridge
61 casing of container
62 base of container
63 cover of container
65 opening of the cover
67 container
68 edge of the cover
70 combustion device apparatus using fluid gas, gas appliance head of the combustion device housing

Claims

Claims
1 . Cartridge (60) for storing liquefied gas under pressure comprising a container (67) with an opening (65) and a valve (30) fitted in said opening (65) for controlling the flow of gas outwards from the cartridge (60), whereby the valve (30) has a jacket (31) that is fitted to the container (67), which jacket (31) encloses a hollow body (34) with an inlet (39) for the gas that is stored in the cartridge (60) and an outlet for the gas when the gas flows outwards from the cartridge (60), which body (34) has in its interior a movable element (35), configured to move between a position that allows the flow of the gas outwards from the cartridge (60) and a position that does not allow the flow of the gas outwards from the cartridge (60), the cartridge (60) being characterized in that the hollow body (34) has one end that is within the container (67), which end is sealed with a bottom (38) that does not allow the flow of the gas from said end towards the interior of the hollow body (34).
2. Cartridge (60) according to claim 1 , whereby the movable element (35) is a metal ball.
3. Cartridge (60) according to claim 1 or claim 2, whereby the hollow body (34) has a side wall and the inlet (39) for the gas is configured in the side wall (34) above the bottom (38).
4. Cartridge (60) according to any one of claims 1 to 3, whereby the hollow body (34) has four almost parallel slots, which form the inlet (39) for the gas.
5. Cartridge (60) according to claim 4, whereby each slot has a length between 6 millimeters and 10 millimeters and a width between 1 millimeter and 2 millimeters.
6. Cartridge (60) according to any one of claims 3 to 5, whereby the bottom (34) has a perimeter that coincides either with the inner perimeter of the side wall or with the outer perimeter of the side wall.
7. Cartridge (60) according to any one of claims 1 to 6, whereby the jacket (31) is from tinplate.
8. Cartridge (60) according to any one of claims 1 to 7, whereby the movable element (35) is from stainless steel.
9. Cartridge (60) according to any one of claims 1 to 8, whereby the hollow body (34) has in its interior a restoring element (36) that pushes the movable element (35) towards the position that does not allow the flow of the gas outwards from the cartridge (60).
10. Cartridge (60) according to any one of claims 1 to 9, whereby the restoring element (35) is from stainless steel.
1 1 . Cartridge (60) according to any one of claims 1 to 9, whereby the restoring (35) element is a helical spring from stainless steel.
12. Cartridge (60) according to any one of claims 1 to 11 , whereby the hollow body (34) is made of plastic.
13. Cartridge (60) according to any one of claims 1 to 12, whereby the jacket (31) has a lip that fits tightly along the circumference of the opening (65) of the container (67) and whereby a first sealing element (32) is provided between the jacket (31) and the container (67).
14. Cartridge (60) according to any one of claims 1 to 13, whereby between the jacket (31) and the body (34) there is a second sealing element (33).
15. System including a cartridge (60) according to any one of claims 1 to 14 and a combustion device (70) with a piercing element, configured to cooperate with the valve (30) of the cartridge (60).
EP17835497.3A 2017-04-04 2017-12-17 Safety valve with metal elements for gas cartridge Active EP3516289B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20213629.7A EP3825598A1 (en) 2017-04-04 2017-12-17 Safety valve with metal elements for gas cartridge

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GR20170200047U GR2003110Y (en) 2017-04-04 2017-04-04 Small-sized liquid-gas cylinder having a security valve furnished with metal elements
GR20170100146A GR1009358B (en) 2017-04-04 2017-04-04 Liquid gas cylinder with security valve
PCT/IB2017/058032 WO2018185543A1 (en) 2017-04-04 2017-12-17 Safety valve with metal elements for gas cartridge

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP20213629.7A Division EP3825598A1 (en) 2017-04-04 2017-12-17 Safety valve with metal elements for gas cartridge
EP20213629.7A Division-Into EP3825598A1 (en) 2017-04-04 2017-12-17 Safety valve with metal elements for gas cartridge

Publications (2)

Publication Number Publication Date
EP3516289A1 true EP3516289A1 (en) 2019-07-31
EP3516289B1 EP3516289B1 (en) 2021-03-10

Family

ID=61024802

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EP20213629.7A Withdrawn EP3825598A1 (en) 2017-04-04 2017-12-17 Safety valve with metal elements for gas cartridge
EP17835497.3A Active EP3516289B1 (en) 2017-04-04 2017-12-17 Safety valve with metal elements for gas cartridge

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Country Status (5)

Country Link
EP (2) EP3825598A1 (en)
KR (1) KR102415475B1 (en)
CN (1) CN110494689B (en)
WO (1) WO2018185543A1 (en)
ZA (1) ZA201906349B (en)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1368185A (en) 1963-06-10 1964-07-31 Applic Gaz Sa Improvements to valve boxes for liquefied gas cylinders
FR1433490A (en) 1965-02-10 1966-04-01 Applic Gaz Sa Improvements to flow limiting devices, in particular for liquefied gas cartridges
FR1449846A (en) * 1965-06-29 1966-08-19 Gaz Et Petrole Sa Improvements and simplifications to liquefied gas appliances
FR2208086B1 (en) * 1972-11-24 1976-10-29 Applic Gaz Sa
CH587437A5 (en) * 1974-08-14 1977-04-29 Interpatent Anstalt
FR2617941B1 (en) * 1987-07-07 1989-10-27 Applic Gaz Sa VALVE AND VALVE CONTAINER
FR2637957B1 (en) * 1988-11-14 1992-06-26 Choukri Mohammad FLOW AND PRESSURE LIMIT VALVE FOR THE EQUIPMENT OF BOTTLES FROM 1 TO 6 KG BUTANE
GB2262156B (en) * 1991-12-04 1995-08-30 Taymar Ltd A valve
GR1007468B (en) 2010-09-29 2011-12-01 Γεωργιος Πασχος Small-sized gas cylinder with safety valve
KR101281536B1 (en) * 2012-01-19 2013-07-19 주식회사 대륙제관 Over-pressure preventing safety relief valve for prtable gas container
GR1008467B (en) * 2013-12-19 2015-04-22 Coral Gas Α.Ε.Β.Ε.Υ., Internal flow-restrictor for small-sized pressurized-gas cylinders

Also Published As

Publication number Publication date
EP3825598A1 (en) 2021-05-26
WO2018185543A1 (en) 2018-10-11
ZA201906349B (en) 2021-09-29
KR20190131545A (en) 2019-11-26
KR102415475B1 (en) 2022-07-04
CN110494689A (en) 2019-11-22
CN110494689B (en) 2022-05-06
EP3516289B1 (en) 2021-03-10

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