US3460351A - Device to accelerate the boiling of a liquefied gas - Google Patents

Device to accelerate the boiling of a liquefied gas Download PDF

Info

Publication number
US3460351A
US3460351A US3460351DA US3460351A US 3460351 A US3460351 A US 3460351A US 3460351D A US3460351D A US 3460351DA US 3460351 A US3460351 A US 3460351A
Authority
US
United States
Prior art keywords
tube
boiling
gas
liquefied gas
liquid
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.)
Expired - Lifetime
Application number
Other languages
English (en)
Inventor
Gerard Dalle
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.)
Novartis Corp
Original Assignee
Geigy Chemical Corp
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
Application filed by Geigy Chemical Corp filed Critical Geigy Chemical Corp
Application granted granted Critical
Publication of US3460351A publication Critical patent/US3460351A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/60—Contents and propellant separated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/75—Aerosol containers not provided for in groups B65D83/16 - B65D83/74
    • B65D83/752—Aerosol containers not provided for in groups B65D83/16 - B65D83/74 characterised by the use of specific products or propellants
    • 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
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
    • 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
    • F17C2201/0119—Shape cylindrical with flat 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0646—Aluminium
    • 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
    • F17C2223/035—High pressure (>10 bar)
    • 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
    • F17C2223/036—Very high pressure (>80 bar)
    • 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
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/043—Localisation of the removal point in the gas
    • F17C2223/045—Localisation of the removal point in the gas with a dip tube
    • 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
    • F17C2270/0718—Aerosols

Definitions

  • This invention relates to a device designed to accelerate the boiling of a liquefied gas under pressure when the liquefied gas is subjected to a pressure reduction of a nature to cause its boiling.
  • This invention is more specifically applicable to the field of aerosol dispensers, in which the device in question constitutes a new means of accelerating the boiling of a propellant composed of the liquefied gas under pressure. Aerosol dispensers equipped with the device of the present invention can accordingly make use of a propellant selected from among gases whose physical properties would otherwise not be very suitable for such a purpose.
  • a propellant cartridge having a push-button valve thereon and containing a liquefied gas serving as propellant
  • a nozzle assembly having a venturi nozzle therein and producing by the flow of the gas therethrough the suction, ejection and spraying of a product to be dispensed in the liquid phase and containing at least one active agent;
  • a product container containing the liquid phase product which container can be coaxial with and surround the propellant cartridge and contain it, or can be placed alongside the propellant cartridge.
  • Such dispensers are intended to be used while they are held in a vertical position, and must be able to discharge the propellant gas under a relatively constant driving pressure over an extended period of time and without it being necessary to shake them, even when they are used at a relatively low ambient temperature.
  • the minimum value of the driving pressure which must be produced depends on many factors, among which are:
  • the quality of the spray desired air dispersed aerosol or surface covering spray
  • the minimum value of the driving pressure is approximately 1 kg./cm. for air dispersed aerosols.
  • the gases available from a practical and economic standpoint to produce such a pressure are few in number. They are, essentially:
  • the fluorochlorinated derivatives are heavy gases by means of which air dispersed sprays can be obtained only at the cost of a considerable consumption of gas;
  • Propane has a vapor tension ranging to about 20 bars at 50 C. and causes serious problems in connection with the resistance and tightness of the propellant cartridge;
  • the prior art has therefore sought to accelerate and regulate the boiling of these other gases to permit their being used as propellants.
  • the following means have been suggested and have been used in the prior art aerosol dispensers and the packing of gases under pressure.
  • a heating element is introduced into the cartridge of the liquid propellant.
  • Such an arrangement is costly and unacceptable for an aerosol dispenser, which generally has a small volume, and the various components of which cannot be disassembled due to the fact that, once empty, such a dispenser is as a rule not used again.
  • valve is fed not with the gaseous phase, but with the liquid phase.
  • the device according to the invention accelerates and regulates the boiling of a liquefied propellant, and is first of all designed to cope with the drawbacks of the previous devices referred to above.
  • the invention is intended in particular, on account of its exceeding low cost, for use in aerosol containers sold at relatively low prices, and in which the propellants can be the gases mentioned above but considered unemployable for such purpose.
  • the device for accelerating the boiling of a liquefied gas or a mixture of liquefield gases under pressure contained in an enclosure in which a state of liquid-vapor equilibrium has been established is characterized by the fact that it is made up of a body which is insoluble in the liquefied gas or mixture of gases and is at least partially immersed in the liquefied gas or gases, the body containing at least one cavity in communication with the liquefied gas through an opening in the body and the inner end of which cavity is located at a level higher than that of the opening, the cavity being at least partially filled with the vapor phase of the gas or gases in question.
  • the device according to the invention is moreover es pecially advantageous when it is advisable to avoid the lowering of the pressure in the enclosure.
  • the enclosure consists of an aerosol dispenser container, the liquefied gas serving as propellant for the spraying of an active agent.
  • the invention makes possible aerosol dispensers equipped with a device pursuant to the invention and in which the propellant is a gas of the type referred to above and not used at present in a similar field.
  • a cavity is the space within a hollow tube which is open at one end and closed at the other end and partially immersed in the liquid, the opening being disposed at the lower portion or lower end.
  • a tube will hereinafter be referred to as a bubble tube.
  • the cavity is the space within a bent back hollow tube, the two ends of which are located at the bottom of the enclosure.
  • a third form of the invention there are a plurality of cavities distributed at least on the surface of a spongy or porous body, the body being immersed in the liquefied gas in the enclosure.
  • FIG. 1 is a vertical cross section of an aerosol dispenser with a double reservoir, the propellant cartridge having a bubble tube therein;
  • FIGS. 2A2E are diagrams of comparative tests of the discharge characteristic of several propellant cartridges, one of which contains a bubble tube;
  • FIG. 3 is a vertical cross section of a propellant cartridge containing a bent-back bubble tube
  • FIG. 4 is a vertical cross section of a propellant cartridge containing a porous body.
  • a product container 1 of an aerosol dispenser contains a liquid active agent 2 to be dispensed.
  • Container 1 is closed by a cover 4 having a depending portion on which is mounted a propellant cartridge 5 containing the propellant 6, such as a liquefied gas, the kinetic energy of which supplies the energy for spraying of liquid 2.
  • Cover 4 also carries valve means comprising an obturator or obturators required for controlling fluid flow and has an ejector with a push-button 9 thereon having a spray nozzle therein, the outlet aperture of which is seen at 10.
  • Active agent 2 is conducted to the ejector by a dip tube 3.
  • the open surface AA of the liquefied gas 6 defines in the cartridge 5 the boundary between the volumes occupied respectively by the liquid phase 6 and vapor phase '7.
  • a bubble tube 8 is freely disposed inside the cartridge 5.
  • the hollow interior of the bubble tube constitutes a cavity and has the upper end 11 thereof closed, but the lower end 1011 is open.
  • bubble tube 8 When the dispenser is at rest, bubble tube 8 is partially filled With liquid, and the remainder of the interior is filled with gas. Excluding capillary phenomena and any effect due to the presence of initially imprisoned air, the level a of the liquid in bubble tube 8 is at the plane of the open surface AA of the liquefied gas. The gas occupies the remaining volume of bubble tube 8 between this level a and upper end 11.
  • bubble tube 8 is of polyethylene or aluminum.
  • bubble tube 8 may be made of any other substance sufiiciently strong so that it will not break under the eifect of the normal shocks to which the dispenser may be subjected, and which will cause no corrosion to occur in cartridge 5 nor in the components of the obturator, and which is insoluble in the liquefied gas and devoid of chemical afiinity with respect to it. Limited interactions can nevertheless be permitted, as for example a slight swelling of bubble tube 8.
  • the inside diameter of bubble tube 8 can be less than 1 mm, but from a practical standpoint the inside diameter of the tube 8 ranges from 1 to 3.5 mm. and, preferably, from 2 to 3 mm. More specifically, the inside diameter of bubble tube 8 must "be such so that the liquid contained therein can be expelled without delay when lowering of the pressure of the vapor phase 7 occurs; its specific determination would require knowledge of the size of the propellant cartridge, volume of the vapor phase 7, the volume of the gas isolated in tube 8 and the height of liquid 6 in reservoir 5. In practice, the inside diameter of bubble tube 8 does not, as a rule, exceed 4 mm. for cartridges 5 having a volume of 50 ml. and 5 mm. for cartridges 5 having a volume of ml.
  • the thickness of the bubble tube 8 is not an important factor; it need only be such as to insure suitable rigidity, taking into account the above-mentioned swelling which may occur.
  • the length of bubble tube 8 is less than or equal to the length of the longest tube 13 that can be introduced into cartridge 5 and greater than the greatest depth of liquid that can be contained in said cartridge 5. This depth does not as a rule exceed 3 5 of the distance H which separates the bottom of cartridge 5 from the propellant gas discharge aperture 12. This preferred size forces tube 8 to remain partially immersed without being able to sink completely to the bottom of cartridge 5 nor float on the open surface of liquid 6. On the other hand, bubble tube 8 has its lower end 10a close to the bottom of cartridge 5, which enables it to properly fulfill its function.
  • Bubble tube 8 can be straight or slightly curved, no special importance being attached to these variations in shape.
  • the gas isolated between level a and upper end 11 of bubble tube 8 expands and propels the liquid in the tube toward the lower end 10a of bubble tube 8.
  • Flask I was shaken during the tests.
  • Flask III has therein a bubble tube 8 according to the present invention.
  • Flask IV was used without shaking.
  • the pressure curves obtained with flask I show a proper behavior of the dispenser, which was able to function during all of the sprayings at a pressure in excess of 1 kg./ cm.
  • the gas flow was controlled by the regular shaking of flask I, which thus caused a continuous and sufiicient supply of the internal heat of the liquid to its open surface where the boiling was taking place.
  • Flask III equipped with bubble tube 8 shows a relatively orderly pressure curve, the values of which range above 1 kg./cm. as in the case of flask I.
  • Bubble tube 8 simply an inverted tube, acts here as a permanent and regular generator of bubbles and produces almost the same effect as the method of shaking.
  • the bubble tube is bent double.
  • This bent bubble tube consists of a flexible tube 14of polyethylene, for examplecut to a length twice that required for a single tube, and bent at its middle until its ends 15 touch, and placed in reservoir 5 with the open ends 15 resting on the bottom of the latter.
  • bent tube 14 is identical to that of bubble tube 8 which has been previously described.
  • the third embodiment shown in FIG. 4 comprises a porous body 16 placed on the bottom of reservoir 5.
  • Porous body 16 has on its outer surface a large number of cavities 17, which are closed on the inner end and which can retain fractions of gas by adsorption.
  • porous body 16 is vermiculite, pumice stone, wood charcoal or a scrap of rough bone.
  • All these bodies have an outer surface, the corrugations of which are visible to the eye; they have a cellular structure and cavities opening outwardly and closed on the inner end; they are chemically inert with respect to the components of the dispensing apparatus and to the liquefied gas; their mechanical resistance is sufiicient to withstand normal shocks; and their density is such that they remain at the bottom of cartridge 5.
  • the preferred porous bodies have the advantage of inducing boiling for more than one month after their introduction into a cartridge 5, without preliminary shak- This feature differentiates them from other porous bodies such as soft wood, agglomerated wood, resinous wood, frit, cement, plaster, slate, crystallized sulphur and earthware, for which it is necessary, in the event that the dispenser is not used for an extended period of time (15 days, for example), to shake the dispenser for the purpose of restoring physical contact between the porous body and the vapor phase.
  • the dimensions of the fragments of porous bodies are such that there is no need, for practical reasons, to go below a volume equivalent to that of a grain of Wheat.
  • the fragment has approximately the volume of a sphere 5 mm. in diameter, and its shape can be any shape whatever and range from a spheroid, which is completely immersed, to a very elongated rod, which may be only partially immersed. It is obvious that the fragments can be of greater size and that several fragments can be used simultaneously. It is advisable, however, that these fragments not be able to penetrate into the dispenser valve nor take too much space in cartridge 5 because they will reduce the amount of propellant 6 which can be stored.
  • the porous bodies according to the invention function in the same manner as the tubes.
  • the pressure of the gas below the open surface of cartridge 5 diminishes.
  • This pressure drop is transmitted through the liquid to the small gas bubbles retained in the cavities of the lower section of porous body 16, which expand until they spill out of their cavities 17.
  • the liquid-gas contact surfaces bordering on these cavities 17 become boiling surfaces where gas bubbles are produced which rise toward the open surface, bringing along with them a certain quantity of heat which accelerates the boiling produced on the open surface.
  • porous bodies can fulfill their function only to the extent that gas particles have previously been adsorbed by them.
  • the triggering occurs in a very natural way by reason of the very adsorbent power of the porous body in contact with the liquid. If, for any reason whatsoever, such as a protracted storage, triggering does not occur, a mere shaking, bringing the porous body in contact with the gas phase, is sufficient to bring about the boiling as soon as the obturator is opened.
  • a device for accelerating the boiling of a liquefied gas comprising an enclosure adapted to contain liquefied gas under pressure in which a state of liquid-vapor equilibrium has been established, and a body which is insoluble in the liquefied gas positioned in said enclosure, said body having therein at least one cavity having the inner end thereof closed and having an opening opening out of the body below the level of the closed inner end of the cavity, said opening being positioned in the enclosure at a level below the level at which the liquefied gas will normally occupy in the enclosure.
  • a device as claimed in claim 1 in which said body is a hollow tube closed at one end and positioned in said enclosure with the closed end uppermost, said cavity being the hollow interior of the tube and said opening being the open lower end of the tube.
  • a device as claimed in claim 3 in which the inner diameter of said tube is from 1-5 mm. and said enclosure has a volume of 50-150 ml.
  • a device as claimed in claim 3 in which the length of said tube is less than the greatest inside dimension of said enclosure and greater than /5 the inside height of the enclosure.
  • a device as claimed in claim 1 in which said body is a hollow tube open at both ends and bent double and positioned in said enclosure with the open ends down, the cavity being the hollow interior of the tube and said opening being the open ends of said tube.
  • a device as claimed in claim 8 in which the inner diameter of said tube is from l-5 mm. and said enclosure has a volume of 50-150 ml.
  • a device as claimed in claim 1 in which said body is a porous body containing a plurality of cavities, said body resting on the bottom of the enclosure with at least some of said cavities opening out of the lower surface of said body.
  • a device as claimed in claim 12 in which said enclosure has a volume of from 50-150 ml., and said porous body has a volume equivalent to that of a sphere approximately 5 mm. in diameter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
US3460351D 1967-01-05 1968-01-05 Device to accelerate the boiling of a liquefied gas Expired - Lifetime US3460351A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR90024A FR1532287A (fr) 1967-01-05 1967-01-05 Dispositif pour accélérer l'ébullition d'un gaz liquéfié

Publications (1)

Publication Number Publication Date
US3460351A true US3460351A (en) 1969-08-12

Family

ID=8623403

Family Applications (1)

Application Number Title Priority Date Filing Date
US3460351D Expired - Lifetime US3460351A (en) 1967-01-05 1968-01-05 Device to accelerate the boiling of a liquefied gas

Country Status (5)

Country Link
US (1) US3460351A (fr)
BE (1) BE708290A (fr)
CH (1) CH517031A (fr)
FR (1) FR1532287A (fr)
GB (1) GB1200318A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777934A (en) * 1972-02-24 1973-12-11 Dow Chemical Co Suspension polymerized polyvinyl chloride beads as vapor pressure depressants
EP0024263A1 (fr) * 1979-08-21 1981-02-25 Winfried Jean Werding Dispositif et procédé pour la distribution de produits liquides ou pâteux sous pression
WO2005070788A1 (fr) * 2004-01-23 2005-08-04 Kbig Limited Systemes de distribution de produits

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049158A (en) * 1975-11-13 1977-09-20 S. C. Johnson & Son, Inc. Pressurized container-dispensers and filling method
ATE367325T1 (de) * 2004-01-29 2007-08-15 Kh Lloreda S A Unter druck stehende sprühvorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2084297A (en) * 1935-04-30 1937-06-15 Lone Star Gas Co Method for vaporizing liquefied petroleum gas
US2729068A (en) * 1952-01-30 1956-01-03 Mitchell Co John E Combination liquid fuel vaporizer and storage tank
US2805554A (en) * 1955-02-10 1957-09-10 Schachtsiek Erwin Arrangement for cooling transportable goods
US2892317A (en) * 1956-04-12 1959-06-30 Hiram M Holmes Spray gun
US2954678A (en) * 1957-07-18 1960-10-04 Ass For Physiologic Res Inc Method of dispersing materials

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2084297A (en) * 1935-04-30 1937-06-15 Lone Star Gas Co Method for vaporizing liquefied petroleum gas
US2729068A (en) * 1952-01-30 1956-01-03 Mitchell Co John E Combination liquid fuel vaporizer and storage tank
US2805554A (en) * 1955-02-10 1957-09-10 Schachtsiek Erwin Arrangement for cooling transportable goods
US2892317A (en) * 1956-04-12 1959-06-30 Hiram M Holmes Spray gun
US2954678A (en) * 1957-07-18 1960-10-04 Ass For Physiologic Res Inc Method of dispersing materials

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777934A (en) * 1972-02-24 1973-12-11 Dow Chemical Co Suspension polymerized polyvinyl chloride beads as vapor pressure depressants
EP0024263A1 (fr) * 1979-08-21 1981-02-25 Winfried Jean Werding Dispositif et procédé pour la distribution de produits liquides ou pâteux sous pression
WO2005070788A1 (fr) * 2004-01-23 2005-08-04 Kbig Limited Systemes de distribution de produits
US20060272537A1 (en) * 2004-01-23 2006-12-07 Garrett Michael E Product dispensing systems

Also Published As

Publication number Publication date
FR1532287A (fr) 1968-07-12
BE708290A (fr) 1968-05-02
GB1200318A (en) 1970-07-29
CH517031A (fr) 1971-12-31

Similar Documents

Publication Publication Date Title
US3422993A (en) Foam dispensing device and package
EP0445165B1 (fr) Soupape de decharge de fluide
US3053422A (en) Reusable aerosol dispenser
KR100257116B1 (ko) 저압력, 비장벽 형태의 밸브 분배캔
US3211349A (en) Aerosol dispenser with flexible dip tube
US7185786B2 (en) Gas storage and delivery system for pressurized containers
EP1317395B1 (fr) Systeme de stockage et de distribution de gaz pour recipients sous pression
US5154320A (en) Aerosol spray system
US4141472A (en) Aerosol container with gas-permeable membrane
EP1706335B1 (fr) Systeme de distribution de produits et methode pour sa fabrication
US3417901A (en) Reusable pressurized dispensing device
US3122284A (en) Pressurized dispenser with pressure supplying and maintaining means
ES380196A1 (es) Sistema de proteccion de liquidos inflamables, almacenados contra riesgo de incendios.
US2728495A (en) Liquid dispensing device and composition therefor
US2954935A (en) Means for pressurizing a container
US2932433A (en) Dispenser for pressure packed materials
US2908334A (en) Process and apparatus for generating and discharging foam
US3460351A (en) Device to accelerate the boiling of a liquefied gas
CN111108049B (zh) 喷雾产品
US2689768A (en) Portable self-contained spray unit
US2705661A (en) Liquid dispensing system employing internally-generated gas pressure
US3373579A (en) Device for chilling and frosting drinking glasses
JPH0694195A (ja) ガス貯蔵供給システム
US2950846A (en) Three phase dispenser
JPH0428379A (ja) エアゾール式簡易消火具