NL2032413B1 - Pressure control device for pressurized fluid container and pressurized fluid container provided with such a pressure control device - Google Patents
Pressure control device for pressurized fluid container and pressurized fluid container provided with such a pressure control device Download PDFInfo
- Publication number
- NL2032413B1 NL2032413B1 NL2032413A NL2032413A NL2032413B1 NL 2032413 B1 NL2032413 B1 NL 2032413B1 NL 2032413 A NL2032413 A NL 2032413A NL 2032413 A NL2032413 A NL 2032413A NL 2032413 B1 NL2032413 B1 NL 2032413B1
- Authority
- NL
- Netherlands
- Prior art keywords
- regulating device
- compartment
- pressure regulating
- guide element
- closing element
- Prior art date
Links
- 239000012530 fluid Substances 0.000 title abstract description 62
- 239000003380 propellant Substances 0.000 claims abstract description 38
- 238000005192 partition Methods 0.000 claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 7
- 239000003566 sealing material Substances 0.000 claims description 4
- 239000000443 aerosol Substances 0.000 claims 2
- 239000000463 material Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 241000195940 Bryophyta Species 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000011929 mousse Nutrition 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
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
- B65D83/66—Contents and propellant separated first separated, but finally mixed, e.g. in a dispensing head
- B65D83/663—Contents and propellant separated first separated, but finally mixed, e.g. in a dispensing head at least a portion of the propellant being separated from the product and incrementally released by means of a pressure regulator
-
- 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
- B65D83/64—Contents and propellant separated by piston
Abstract
The invention relates to a pressure control device for attachment in a pressurized fluid container separating a dispersible fluid compartment and a propellant compartment, comprising a partition wall provided with at least one passage opening; and a closing element attached to the partition wall moveable between a passage opening release position and a passage opening closing position. The invention also relates to a pressurized fluid container provided with a such pressure control device.
Description
Pressure control device for pressurized fluid container and pressurized fluid container provided with such a pressure control device
The present invention relates to a pressure control device for attachment in a pressurized fluid container separating a dispersible fluid compartment and a propellant compartment, comprising: a partition wall provided with at least one passage opening; and a closing element attached to the partition wall moveable between a passage opening release position and a passage opening closing position. The present invention also relates to a pressurized fluid container provided with such a pressure control device.
Containers for pressurized dispersers fulfil multiple functions, including containing a fluid to be dispersed, and maintaining an overpressure inside the container for dispersing/dispensing of the fluid contained inside the container. In this respect the definition of a fluid is broad; it may be a gas, a liquid, a gel, a paste, a mousse or any type of mixture of such components. A well-known problem with common dispersers is that the pressure at which the fluid to be dispersed is contained, changes over time, due to the leakage of propellant from the container as well as the decreasing level of the fluid to be dispersed because of normal use of the disperser. Although in common household applications - such as personal care products, paint, glue, and so on - a variation in pressure may be acceptable, other applications including the dispersing of high viscous substances such as sealants or caulks, or applications in a medical context, require accurate dosing control.
However, in all applications a continuous pressure over the lifetime of the disperser containers is preferred.
To guarantee a constant and predictable outflow of fluid over the lifetime of the disperser, the pressure prevailing in fluid to be dispersed should thus be kept constant. More advanced disperser containers are therefore pressure controlled, for which they are provided with a compartment containing a highly pressurized propellant. The propellant compartment is furthermore provided with a pressure control valve that controls the outflow of propellant from the propellant compartment based on the pressure prevailing in the fluid to be dispersed, thereby keeping the fluid to be dispersed at a constant pressure. Such pressure control devices are known, for instance as disclosed in WO 2018/185652.
The dispersible fluid compartment and the propellant compartment may be embodied as parts (spaces) of a joint mantle (for instance the joint jacket of a spray can) that are separated from each other by a separation wall, in which separation wall the pressure control device is allocated. As an alternative it is for instance also possible that the propellant compartment is a completely enclosed container, which container is placed into a dispersible fluid compartment, and wherein the pressure control device is allocated in the wall of the enclosed (pressurized) container.
The object of the present invention is to provide an improved pressure control device and an improved pressurized fluid container provided with such a pressure control device that provides at least the same functionality as the prior art pressure control devices at for instance lower costs and/or with higher functional accuracy.
The present invention provides for this purpose a pressure control device for attachment in a pressurized fluid container separating a dispersible fluid compartment and a propellant compartment, comprising: a partition wall provided with at least one passage opening; and a closing element attached to the partition wall moveable between a passage opening release position and a passage opening closing position; wherein the partition wall is provided with a protruding guide element, wherein the closing element is surrounding the protruding guide element, and wherein the passage opening in the partition wall is allocated in or adjacent the protruding guide element. In such pressure control device the closing element gets around (surrounds) the protruding guide element enabling a very compact construction that also requires a limited amount of material compared to the prior art pressure control device. This not only limits material consumption but also limits the price and/or simplifies the construction making the pressure control device less susceptible to malfunctioning and easer to assemble. As the construction is also limited in volume the efficiency of a pressurized fluid container provided with such a pressure control device will also increase compared to the prior art pressurized fluid containers.
The closing element and the protruding guide element are preferably moveable connected such that the closing element and the protruding guide element are gas- tight enclosing a pressure chamber. This gas-tight enclosed pressure chamber when at least partially compressed is exerting a pressure on the inside of the closing element forcing the closing element away from the at least one passage opening, and when the external pressure in the dispersible fluid compartment is not able to withstand the pressure in the pressure chamber, thus opening the aperture inthe passage opening in the separation wall. The result of opening the (at least one) aperture is that propellant will flow from the propellant compartment in the dispersible fluid compartment until the pressure in the dispersible fluid compartment is risen to a level that the closing element is pushed back (against the pressure in the pressure chamber) to the position wherein the closing element seals off the passage opening in the separation wall.
Preferably the closing element is hood-shaped. Such a simple cap-shaped construction off the closing element is simple to produce, compact and relatively simple to be guided along the protruding guide element. A specific and very simple cup shape is in cross section U-shaped, thus not possessing a border or rim that protrudes from an upright sidewall of the closing element. Even more preferred is that the closing element is circle symmetrical, simplifying the positioning and functioning of the closing element.
In an even more specific embodiment the protruding guide element is surrounded by a slot-shaped channel, which slot-shaped channel may be recessed in the partition wall. The slot-shaped channel is supportive in holding in position of the closing element, especially in the position wherein the closing element is in its passage opening closing position. Furthermore the advantage of the slot-shaped channel surrounding the protruding guide element may limit the height of the protruding guide element required for proper functioning of the pressure control device according to the present invention.
When use is made of a slot-shaped channel the at least one passage opening may well be allocated in the slot-shaped channel. Such will help to protect the passage opening against contamination but even more will help to ensure a correct closing of the passage opening by the closing element. These advantages are even more provided in case the at least one passage opening is allocated in the bottom of the slot-shaped channel.
To ensure a gas-tight moveable contact between the inside of the closing element and the protruding guide element, the inside of the closing element or the outside of the protruding guide element may be covered with a flexible sealing material layer.
As an alternative also a single material closing element may be used, in which situation the material choice is preferable so that the material of the closing element has sealing properties. For a further improvement of the gas-tight moveable contact between the protruding guide element and the closing element, the inside of the closing element contacting the protruding guide element or the outside of the protruding guide element contacting the closing element may be provided with a annular sealing element.
In a simple embodiment the protruding guide element may be cylindrical, thus simplifying the assembly of the pressure control device. As the shape of the closing element and the shape of the protruding guide element are connected to each other also the side of the closing element contacting the protruding guide element will then be cylindrical, and more preferably also the outside of the closing element may then be cylindrical.
For a further stabilisation of the orientation of the closing element during its traveling along the protruding guide element (while moving between a passage opening release position and a passage opening closing position) the protruding guide element may be stationary connected with at least one support that externally seizes on (or guides) the closing element. Such external closing element support may also be provided with an abutment limiting the maximum freedom of movement of the closing element. With such abutment the closing element may not come off the protruding guide element.
The position of the protruding guide element on the partition wall may be chosen as fit in a specific application, for instance may the protruding guide element be centrally located if the partition wall is more or less circular.
The invention also provides a pressurized fluid container provided with a pressure control device according to the present invention, wherein the pressure control device is attached in the pressurized container separating a dispersible fluid compartment from a propellant compartment such that the at least one passage opening in the separating wall is the only fluid-permeable connection between the dispersible fluid compartment and the propellant compartment. In this definition the pressurized fluid container thus includes a dispersible fluid compartment, a propellant compartment as well as the pressure control device. In practise the 5 pressurized fluid container will even more also include a disperser nozzle to release the fluid to be dispersed under (the regulated) pressure from the dispersible fluid compartment.
The shape of the pressurized fluid container is free of choice, however in practise cylindrical spray cans are used, which may for instance be made out of aluminium, tin plate material or a plastic like for instance PET. In such cylindrical spray can the partition wall may be disc-shaped, separating the dispersible fluid compartment and the propellant compartment. The propellant compartment may as an alternative also be embodied as an individual container that is placed in a larger dispersible fluid compartment, thus not limiting the shape of the propellant compartment other than that it has to fit within the dispersible fluid compartment and that it can withstand the pressure.
The invention will now be elucidated with reference to the non-limitative exemplary embodiments illustrated in the following figures. Corresponding elements are denoted in the figures by corresponding reference numbers. Herein shows: figures 1A, 1B schematic side views on a pressure control device according to the present invention, wherein the position of a closing element is that is part of the pressure control device is varied; figure 2A a longitudinal cross-section of a bottom part of a pressurized fluid container according to the invention; figure 2B a cross-section through a detailed perspective view of a part of the pressurized fluid container shown in figure 2A; figure 3 a cross-section of a pressurized fluid container according to the invention; figure 4A a perspective view of a propellant compartment provided with a part of an alternative embodiment of a pressure control device according to the present invention; and figure 4B a longitudinal cross-section of a an further embodiment of a pressurized fluid container according to the invention incorporating the pressure control device as shown in figure 4A.
Figure 1A shows a pressure control device 1 for attachment in a pressurized fluid container (see figure 2 and 3) having a partition wall 2 that is provided with a surrounding mounting edge 3. In the partition wall 2 a passage opening 4 enables a propellant (normally a gas) to pass the partition wall 2, at least as long as a closing element 5 is not closing off the passage opening 4. In the position of the closing element 5 as depicted in figure 1A the closing element 5 is in “a passage opening 4 release position”. The closing element 5 here is hood-shaped and surrounds a protruding cylindrical guide element 6 that is centrally allocated on the partition wall 2, which protruding guide element 6 is surrounded by a slot-shaped channel 7 that is recessed in the partition wall 2. The passage opening 4 is allocated in the bottom of the slot-shaped channel 7. The inside of the hood-shaped closing element 5 is covered with a flexible sealing material layer 8 on the bottom of which sealing material layer 8 an inside annular sealing element 9 (to be compared with an “O- ring”) seals off the contact between the closing element 5 and the protruding guide element 6, thus providing a gas-tight pressure chamber 30 with a volume that is variable due to the movement of the closing element 5 relative to the protruding guide element 6. On the side of the slot-shaped channel 7 facing away from the protruding guide element 6 the partition wall 2 is provided with at least one external closing element guide 9, which external guide element 9 not only externally guides the closing element 5 but also functions as a limitation for the way of trajectory of the closing element 5 (see the abutment 10 on the outer end of the external guide element 9).
In figure 1B the pressure control device 1 of figure 1A is shown however here the closing element 5 is in the “passage opening closing position” as the closing element 5 is moved (in the figure downwards) in comparison with the position of the closing element 5 in figure 1A according the arrow P; such that the closing element 5 seals off the passage opening 4. It is also depicted that the volume of the pressure chamber 30 in figure 1B is substantially smaller than the volume of the gas-tight pressure chamber 30 in the situation shown in figure1A.
Figure 2A shows a longitudinal cross-section of the bottom part of a pressurized fluid container 10 provided with a as according the present invention and as shown in the figures 1A and 1B. The pressure control device 1 is attached in the pressurized container 10 separating a dispersible fluid compartment 11 from a propellant compartment 12 such that a propellant only through the passage opening 4 may flow from the propellant compartment 12 to the dispersible fluid compartment 11, at least as long as the closing element 5 is not in the “passage opening closing position” as depicted in figure 2. Also shown is that the pressurized container 10 is provide with an internal annular narrowing 13 (realised buy an external circumferential indention) against which narrowing 13 the wall partition wall 2 with its surrounding mounting edge 3 form-fitting abuts. The connection between the annular narrowing 13 and the surrounding mounting edge 3 of the partition wall 2 is thus medium-tight/gas-tight. For holding the position of the closing element 5 supports 31 are attached such that they are in a stationary position relative to the guide element 6, the supports 31 externally seize on the closing element 5 to keep it in a position that fits the protruding guide element 6. On the side of the guides 31 facing away from the partition wall 2 abutments 32 (stops) are provided ensuring that the closing element 5 will not loosen from the protruding guide element 6.
Figure 2B shows a cross-section through a detailed perspective view of a part of the pressurized fluid container shown in figure 2A wherein the protruding guide element 6 and two protruding guide elements 31 are clearly visible. The closing element 5 — that is shown in figure 2A — is left out in this figure. Also visible is the passage opening 4 in the partition wall 2. In this embodiment the partition wall 2, the protruding guide element 31 and the supports 31 are all stationary attached to each other. Also reference is made to the abutment 32 that are part of the guides 31 and that prevent the — not shown - closing element 5 from coming loose from the protruding guide element 6.
Figure 3 shows a perspective external view on the pressurized fluid container 10 of which only the lower part was shown in figure 2. A cylindrical shell 20 of the container 10 is provided with an circumferential indention 21 and on the outfeed (upper) side of the container 10 a neck 22 and shoulder 23 are applied with a central outlet tube 24 that may be connected to a — not shown here — spray nozzle.
The upper side of the pressure control device 1 borders the fluid compartment 11, in which fluid compartment 11 a piston 25. By a movement of the piston 25 towards the outlet tube 24 the fluid in the compartment 11 will be placed under pressure enabling to release a portion of the fluid to be dispersed. The shape of the piston 25 may correspond with the shape of the upper side of the pressure control device 1 and/or the shape of the piston 25 may follow the contour of the closed top of the pressurized fluid container 10 while the piston 25 connects seamlessly but moveable to the inner cylindrical shell wall 20 preventing fluid to pass the piston 25 towards the pressure control device 1, in fact the piston 25 prevents that the dispersible fluid will pass the piston 25.
The pressure control device 1 acts as a constant pressure release valve that opens for gas to pass from the propellant compartment 12 on the opposite side of the pressure control device 1 than the fluid compartment 11.
The propellant compartment 12 functions as a reservoir for a (highly) compressed propellant. Suitable propellants include propane, butane, carbon dioxide, nitrogen, air or any other suitable substance. Preferably, a propellant is chosen that does not chemically react with the dispersible fluid especially when the propellant may contact the dispersible fluid(as may occur in a “diptube” embodiment) . The cylindrical shell 20 also comprises a bottom 26. In the depicted case, the cylindrical shell 20 and the bottom 26 are formed as a single, integral part. The bottom 26 is provided with another valve or releasable closing 27, enabling to pressurize the propellant compartment 12.
Figure 4A shows a propellant compartment 40 that is here not part of a larger construction but that as a “stand-alone” element. The propellant compartment 40 is provided with (here) a part of an alternative embodiment of a pressure control device. Only the protruding guide element 6 is shown (thus not the closing element). In figure 4B the propellant compartment 40 is shown when attached to a dispersible fluid compartment 41. Here also the closing element 5 is shown thus providing an embodiment of a pressure control device 43 according to the present invention.
Claims (16)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/NL2023/050178 WO2023195849A1 (en) | 2022-04-07 | 2023-04-05 | Pressure control device for pressurized fluid container and pressurized fluid container provided with such a pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2031532 | 2022-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL2032413B1 true NL2032413B1 (en) | 2023-11-03 |
Family
ID=83271189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2032413A NL2032413B1 (en) | 2022-04-07 | 2022-07-07 | Pressure control device for pressurized fluid container and pressurized fluid container provided with such a pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL2032413B1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105377718B (en) * | 2013-07-17 | 2018-08-24 | 爱柔包装技术集团有限公司 | Foam dispenser |
| WO2018185656A1 (en) * | 2017-04-03 | 2018-10-11 | Gojara Bvba | Pressure packaging with pressure control device |
| WO2018185652A1 (en) | 2017-04-03 | 2018-10-11 | Gojara Bvba | Disc-shaped pressure control device for pressure packaging |
| US10246248B2 (en) * | 2015-11-10 | 2019-04-02 | Gojara Bvba | Pressure control device, dispenser comprising said pressure control device and method of manufacturing |
-
2022
- 2022-07-07 NL NL2032413A patent/NL2032413B1/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105377718B (en) * | 2013-07-17 | 2018-08-24 | 爱柔包装技术集团有限公司 | Foam dispenser |
| US10246248B2 (en) * | 2015-11-10 | 2019-04-02 | Gojara Bvba | Pressure control device, dispenser comprising said pressure control device and method of manufacturing |
| WO2018185656A1 (en) * | 2017-04-03 | 2018-10-11 | Gojara Bvba | Pressure packaging with pressure control device |
| WO2018185652A1 (en) | 2017-04-03 | 2018-10-11 | Gojara Bvba | Disc-shaped pressure control device for pressure packaging |
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