Gas cartridge

Abstract

Gas cartridge with dispensing valve for dispensing pressurised liquids, foams, gels or the like, wherein the valve cover (2) encloses a container (1) and accommodates a valve body (6) with a valve needle (4) which can be axially displaced from a closed position against the action of an elastic element, in particular a compression spring (7), characterized in that an energy source (17) for supplying power is arranged on the container (1) and / or on the valve cover (2).

Description

[0001] The invention relates to a gas cartridge as a single- or dual-chamber system for the dispensing of pressurized liquids, foams, gels or the like for combustion-powered setting tools according to the preamble of claim 1.

[0002] Both the gas cartridges and gas-powered setting tools have connectors that must be connected securely and gas-tight using sealing connectors.

[0003] Such adapter systems are known from European patent applications EP 0922902, EP 1321241, EP 1321242, and EP 1896220, but all of these adapter systems require additional effort on the part of the setting tool for securely attaching and removing the gas cartridge. Alternatively, external dosing systems can also be attached to the gas cartridge, as is known from DE202011108566.

[0004] The versions of these gas cartridges, which are also known from DE20114780, DE20212802 and DE202011108514, serve as a tank system to supply the corresponding gas-powered setting tools with fuel.

[0005] Such gas-powered setting tools are known from DE202015003261 and DE202015003581 and use a rechargeable battery mounted on the setting tool to supply the setting tool with power for the ignition unit, the setting tool control system, and the drive for a fan motor. These rechargeable batteries add weight to the setting tool and require repeated recharging by the user. This is cumbersome for the user and complicates handling during setting operations due to the additional weight.

[0006] The invention is based on the object of creating a cartridge system for gas cartridges and the corresponding combustion-powered setting tools, which connects gas cartridges safely to the combustion-powered setting tools in a simple manner and at the same time provides an additional energy source for powering the combustion-powered setting tools.

[0007] The energy source for the power supply can be arranged anywhere on the gas cartridge. For example, it can be attached or arranged on the base of the gas cartridge or wrapped as a pouch cell around the outer surface of the gas cartridge and thus also be used directly as a label for the gas cartridge. Additional holders can be used to implement the energy source for the power supply with the gas cartridge as a cartridge system. The surfaces of the gas cartridge and the energy source can optionally provide the contacts for the power connection to the respective gas-powered setting tool. The energy source for the power supply can also be one known battery or several batteries of any shape and size. Thin-film batteries based on layer-by-layer deposited electrodes and electrolytes should be used.These can be wound directly onto the outer surface of the gas cartridge, but tubular sleeves can also be used, onto which the thin-film battery is applied and then pushed onto the container of the gas cartridge or fastened in another way.

[0008] These thin-film batteries have a very thin thickness, ranging from just a few micrometers to a few hundred µm. They are highly flexible, depending on the substrate (e.g., polymer film, stainless steel, glass). The solid-state electrolytes are often inorganic or polymer-based. While the capacity per unit area is low, their safety and cycle stability are very good.

[0009] The bending direction of the cell structure must be maintained during wrapping, as thin-film batteries are usually only flexible in one direction. The minimum bending radius of the substrate is not exceeded for conventional gas cartridges with typical diameters greater than or equal to 31.5 mm. A 31.5 mm diameter results in a bending radius of 15.75 mm, which is perfectly acceptable for many flexible thin-film cell designs, especially those based on polymeric substrates.

[0010] The thin-film battery cell must not be too thick. Multiple layers increase the voltage during winding.

[0011] According to the invention, this object is achieved by providing the gas cartridge with means for supplying power. This object is achieved according to the characterizing part of claim 1.

[0012] Further embodiments of the invention can be found in the following description and the subclaims.

[0013] The invention is explained in more detail below with reference to an embodiment shown in the attached figures. Fig. 1 shows a gas cartridge in axial section without energy source. Fig. 2 shows a gas cartridge in side view with an energy source Fig. 3 shows a gas cartridge with an energy source Fig. 4 shows a gas cartridge in plan view with an energy source

[0014] Fig. Figure 1 shows a gas cartridge with dispensing valve and bag in an aerosol can in axial section.

[0015] The illustrated dispensing valve with bag comprises a valve cap 2 which is crimped to the container 1 in a known manner, wherein an elastic seal 3, preferably made of substantially propellant-impermeable synthetic rubber Buna N, is provided between the container 1 and the valve cap 2. The container 1 has an opening at its upper end crimped to the valve cap 2, through which the bag 11 is inserted into the container 1. The valve cap 2 accommodates a valve body 6 which is sealed off from the valve cap 2 by an elastic disc 5, wherein a valve needle 4 is arranged in the valve body 6, which is presses axially against the elastic disc 5 by a compression spring 7 via the support surface 13 on the valve needle 4 and thus holds the dispensing valve in the closed initial position.The valve needle 4 can be actuated from the outside, so that the valve needle 4 can be moved axially within the valve body 6 from a closed to an open position and vice versa, counter to the action of a compression spring 7. The compression spring 7 is supported on the one hand by a seat in the lower area of ​​the valve body 6 and on the other hand by the valve needle 4 itself.

[0016] The bag 11, which consists of a laminate of preferably nylon or polyester as the outermost layer, aluminum foil as the middle layer, and polyethylene film as the innermost layer, is sealed at the unfolded edge areas by weld seams 12. The receiving body 15, which extends into the bag 11, is welded gas-tight into the weld seam 12 on the bag 11 in the area of ​​the receiving body 15. The receiving body 15 can be made of easily weldable polyolefins or other materials that can be welded to the bag.

[0017] On the valve body 6, on the side facing away from the valve cover 2, there is a receptacle 14, which is preferably cylindrical in design, in which an extension 10 of the receptacle 15, which is welded into the bag 11, is arranged for attachment to the valve body 6. At least one seal 8 is arranged between the receptacle 14 and the welded-in receptacle 15. The seal 8 preferably covers the entire frontal surface 16 of the welded-in receptacle 15. The extension 10 and the receptacle 14 are preferably designed as a clip connection which clamps the seal 8 in the axial direction between the receptacle 14 and the frontal surface 16 of the welded-in receptacle 15, such that the frontal surface 16 is sealed gas-tight with the adjoining extension 10.Thus, the valve body 6, which is not permeable to organic media, encloses the receiving body 15 welded into the bag 11 by means of the receptacle 14 and the seal 8.

[0018] The bag 11 extends substantially over the entire length of the interior of the container 1.

[0019] The bag contents such as liquids, foams, gels or the like and the compressed gas such as the environmentally friendly butane, for example, as the container contents, are filled into the bag 11 or the container 1 via the dispensing valve in the known manner. The bag 11 expands in the container 1 and takes up a significant part of the container volume. When the bag 11 is emptied, the valve needle 4 is pressed downwards against the action of the compression spring 7, so that the bag contents are pressed out through the valve needle 4 while the compressed gas in the container 1 expands. The dispensing valve can be the known dosing valves, tilting valves or, as shown here, Fig. 1 are continuous spray valves.

[0020] This dispensing valve with bag is a device that prevents the exchange of organic media between the bag and container interior and ensures simple production and assembly.

[0021] Fig. 2 and Fig. 3 shows an exemplary arrangement of the thin-film battery 17, which is arranged on the container 1 of the gas cartridge. The power contacts 18 and 19 can also be arranged arbitrarily on the container 1 or the valve plate 2. These then directly or indirectly provide the necessary power connection contacts for a gas-powered setting tool (not shown). A contact 18 or 19 can also be in direct current-carrying contact with the container, so that the container surface can serve as a contact for a gas-powered setting tool (not shown).

[0022] Fig. 4 shows an example of a thin-film battery 17 angled around the container 1.

[0023] This embodiment provides a device that ensures a safe fuel and power supply for gas-powered setting tools. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 0922902

[0003] EP 1321241

[0003] EP 1321242

[0003] EP 1896220

[0003] DE 202011108566

[0003] DE 20114780

[0004] DE 20212802

[0004] DE 202011108514

[0004] DE 202015003261

[0005] DE 202015003581

[0005]

Claims

[1] Gas cartridge with dispensing valve for dispensing pressurised liquids, foams, gels or the like, wherein the valve cover (2) encloses a container (1), a valve body (6) with a valve needle (4) which is axially displaceable from a closed position against the action of an elastic element, in particular a compression spring (7), characterized by that an energy source (17) for power supply is arranged on the container (1) and / or on the valve cover (2). [2] Gas cartridge according to claim 1, characterized by that the energy source (17) is wrapped around the container (1). [3] Gas cartridge according to claim 1 to 2, characterized by that the energy source (17) has at least two contact points (18) and (19) for current output. [4] Gas cartridge according to claims 1 to 3, characterized by that the energy source (17) extends along the container surface.

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