COMBUSTION TOOL

Abstract

The invention relates to a combustion tool (100, 200, 300, 400) comprising a fuel cartridge (10, 20, 30, 40, 50, 60), an electrical power supply (101, 201, 301, 401), and an electrical device (11, 21, 31, 41, 51, 61, 71) operationally connected to the electrical power supply (101, 201, 301, 401) to prepare a fuel (C) in the fuel cartridge (10, 20, 30, 40, 50, 60) for combustion. Figure for the abstract: FIG. 1.

Description

Title of the invention: COMBUSTION TOOL Technical field of the invention

[0001] The present invention relates generally to combustion tools. More specifically, but not exclusively, the present invention relates to combustion tools that use fuels that may require preparation before combustion. Technical background

[0002] Combustion-powered nail and staple driving tools are known and normally comprise a body containing an internal combustion engine. The engine is supplied with fuel from a pressurized fuel gas reservoir, which may include a fuel cartridge. Summary of the invention

[0003] One of the objects of the present invention is to provide a combustion-powered nail and / or staple driving tool, comprising a body containing an internal combustion engine, powered by a fuel reservoir, which may include a fuel cartridge, the fuel preferably not containing carbon, for example hydrogen or ammonia, in order to reduce and / or eliminate carbon oxide emissions. The fuel reservoir may be a pressurized combustible gas reservoir.

[0004] Another object of the present invention is to provide a more reliable and efficient combustion tool.

[0005] The invention relates to a combustion tool comprising a fuel reservoir and an active device for preparing fuel in the fuel reservoir for combustion.

[0006] The active device may include an electrical device. The combustion tool may include a power supply. The electrical device may be operationally connected to the power supply.

[0007] The invention also relates to a combustion tool comprising a fuel tank, an electrical supply means and an electrical device operationally connected to the electrical supply means to prepare fuel in the fuel tank for combustion.

[0008] The electrical device can be electrically connected to the electrical power supply means.

[0009] The electrical device can be operated to heat or activate the fuel

[0010] The fuel can be prepared in different ways, depending on the nature of the fuel and its vapor pressure.

[0011] The tool may include a combustion nailer and, as explained above, combustion nailers generally use gaseous fuels stored in the tank as pressurized liquids. During metering, the fuel vaporizes, which reduces its temperature and that of the surrounding components. In this case, moderate heating may be sufficient to prepare the fuel for ignition.

[0012] In some examples, the fuel tank can be removed from the body of the combustion tool.

[0013] The electrical device can be associated with the fuel tank. Both can be detached from the body of the combustion tool.

[0014] The reservoir may include a cartridge.

[0015] More specifically, in some examples the tank includes a cartridge, the electrical device is associated with the fuel tank and both are removable from a body of the combustion tool.

[0016] The invention also relates to a fuel reservoir, for example a cartridge, comprising an active device for preparing fuel in the reservoir for combustion.

[0017] The reservoir can be for a combustion tool as described above.

[0018] The invention also relates to a fuel cartridge for a combustion tool as described above, the fuel cartridge comprising an electrical device for preparing a fuel in the cartridge for its combustion.

[0019] The reservoir, cartridge, or electrical device may include one or more electrical contacts. The tool may include one or more electrical contacts, for example, to engage the electrical contact(s) of the reservoir, cartridge, or electrical device. At least one of the contacts may include spring-loaded contacts.

[0020] When the electrical device is associated with the reservoir or the cartridge, it can be electrically connected to the power supply by means of electrical contacts which engage with electrical contacts of the tool, for example when inserting the electrical device into the tool or into a body thereof.

[0021] The electrical device can also remain mounted on or in the combustion tool or its body.

[0022] More specifically, the fuel tank may include a cartridge that can be removed from the body of the combustion tool while the electrical device remains mounted on or in the body.

[0023] The electrical device may include a heating device.

[0024] The heating device may include a heating element. The heating element may be electrically connected to the power supply means.

[0025] The heating device can be used to make thermal contact with the tank or cartridge.

[0026] More specifically, the electrical device may include a heating device designed to make thermal contact with the fuel tank.

[0027] The tool may include a resilient material, such as a foam material. The resilient material may stress the heating device or heating element in thermal contact with the fuel tank or cartridge.

[0028] The electrical device can be fixed to a surface of the tank or cartridge.

[0029] More specifically, the electrical device may include a heating device fixed to a surface of the fuel tank.

[0030] The heating device or heating element may include one or more printed circuit boards. The printed circuit board(s) may be affixed to an external surface of the combustion tool or to its body. The heating device or heating element may include a sticker or label, which may incorporate the printed circuit board(s). The heating element, for example the printed circuit board(s), may be printed directly onto the surface.

[0031] The reservoir or cartridge may include a body comprising or formed from an electrically resistive material. The body may function as a heating element of the heating device.

[0032] More specifically, the electrical device may include a heating device, the fuel tank comprising a body comprising or formed of an electrically resistive material and functioning as a heating element of the heating device.

[0033] The electrical device may be external to the fuel tank.

[0034] The electrical device may be external to the fuel cartridge.

[0035] The electrical device may be located at least partly inside the tank of fuel.

[0036] The electrical device may be located at least partly inside the fuel cartridge.

[0037] The electrical device or heating element may include a heating coil. The heating coil may be located inside the tank or cartridge. The heating coil may also be located outside the tank or cartridge.

[0038] The electrical device may include a vaporizer.

[0039] The vaporizer may include a heating element, for example a heating coil. The heating element may be located inside a channel, which may be central. The duct may include one or more air inlets and one or more outlets. The heating element may be located within the duct.

[0040] The reservoir or cartridge may include one or more wicks, which may be immersed in the fuel. Furthermore, the reservoir or cartridge may include a plunger, which may be immersed in the fuel. The heating element of the vaporizer may be located in the channel and / or may be fluidly connected to the wick(s) or the plunger.

[0041] The vaporizer can be integrated or otherwise connected to the reservoir or cartridge. In this case, the inlet(s) can be located at one end of the reservoir or cartridge and / or the outlet(s) can be located at the other end of the same reservoir or cartridge. The wick(s) can be connected directly to the heating element.

[0042] During operation, air can be drawn into the channel, for example from the air inlet(s), by means of airflow induction and through the heating element. Fuel can be drawn into the heating element, for example through the wick(s), and vaporize in the airflow passing through the central channel.

[0043] In addition, the electrical device may include an ultrasonic actuator and / or a piezoelectric actuator. These actuators allow the fuel to be micronized in order to facilitate its vaporization and combustion.

[0044] More specifically, the electrical device may include a vaporizer, for example an ultrasonic actuator and / or a piezoelectric actuator.

[0045] The electrical device may include a converter, which can be configured to convert the fuel, for example, before it is introduced into the combustion chamber. The converter can be configured to chemically modify the fuel. The converter can be configured to separate or crack the fuel into two or more of its constituent elements.

[0046] The electrical device can be configured so that the fuel undergoes a cracking process, for example before being introduced into the combustion chamber.

[0047] More specifically, the electrical device may include a converter configured to separate or crack the fuel into two or more of its constituent elements.

[0048] The fuel may include a carbon-free fuel.

[0049] The invention also relates to a combustion tool for driving fasteners using a carbon-free fuel.

[0050] The invention also relates to a combustion tool driven or operating with a carbon-free fuel.

[0051] The combustion tool may include a reservoir containing a carbon-free fuel.

[0052] The invention also relates to a reservoir, for example a fuel cartridge, containing a carbon-free fuel.

[0053] The invention also relates to a fuel cartridge for a combustion tool as described above, the fuel cartridge containing a carbon-free fuel.

[0054] The carbon-free fuel may include hydrogen or ammonia.

[0055] The combustion tool may include a filling module. The filling module may include or comprise the tank. The filling module may include or comprise the electrical device.

[0056] The filling module can be connected or linked, for example removably, to a fuel tank of the combustion tool, for example for filling it. The tank may include a cartridge. The tank can be mounted on or in the body of the combustion tool.

[0057] More specifically, the combustion tool may include a filling module including the reservoir and the electrical device, in which the filling module can be removably connected to a fuel cartridge mounted on or in a body of the combustion tool for filling it.

[0058] The power supply means may include a battery. The power supply means may include a power cord intended to be connected to a mains power source.

[0059] The electrical device may be part of a plurality of electrical devices. The plurality of electrical devices may include at least two devices from among a heating device, a vaporizer, an evaporator and a converter.

[0060] The plurality of electrical devices may include a heating device and a vaporizer. In addition, or alternatively, the plurality of electrical devices may include an evaporator and a converter. Any other useful combination may be provided.

[0061] In some examples, two or more electrical devices are powered by the same power supply. In other examples, at least one electrical device is powered by a first power supply and at least one electrical device is powered by a second power supply.

[0062] The first power supply means may include a power cable intended to be connected to a mains power source. The second power supply means may include a battery, which may be mounted on the body of the combustion device.

[0063] In examples with a filling module, at least one electrical device of the filling module can be powered by an electrical cable and at least one electrical device can be mounted on the body of the combustion tool and powered by a battery.

[0064] The combustion tool may include a nail gun or a stapler.

[0065] To avoid any doubt, all the features described herein also apply to every aspect of the invention.

[0066] To avoid any ambiguity, the terms "may", "and / or", "for example", and any other similar terms used in this document shall be interpreted as non-limiting, so that not every feature so described is necessarily present. Brief description of the figures

[0067] Other features and advantages of the invention will become apparent upon reading the detailed description that follows, for an understanding of which reference should be made to the accompanying drawings in which:

[0068] [Fig-1] [Fig.1] illustrates a combustion tool according to an example;

[0069] [Fig.2] [Fig.2] illustrates part of the fuel cartridge and its interaction with the electrical device in the combustion tool of the [Fig.1];

[0070] [Fig.3] [Fig.3] illustrates a combustion tool according to another example;

[0071] [Fig.4] [Fig.4] illustrates the fuel cartridge of the combustion tool of the [Fig.3];

[0072] [Fig.5] [Fig.5] illustrates a fuel cartridge according to another example which can be used with the combustion tool of [Fig.3];

[0073] [Fig.6] [Fig.6] illustrates a fuel cartridge according to another example which can be used with the combustion tool of [Fig.3];

[0074] [Fig.7] [Fig.7] illustrates a fuel cartridge according to another example which can be used with the combustion tool of [Fig.3];

[0075] [Fig.8] [Fig.8] illustrates a combustion tool according to another example;

[0076] [Fig.9] [Fig.9] illustrates a combustion tool according to another example;

[0077] [Fig. 10] the [Fig. 10] illustrates a combustion tool according to another example;

[0078] [Fig. 11] the [Fig. 11] illustrates a combustion tool according to another example;

[0079] [Fig. 12] [Fig. 12] illustrates a combustion tool according to another example; and

[0080] [Fig. 13] the [Fig. 13] illustrates a combustion tool according to another example. Detailed description of the invention

[0081] With reference to Figures 1 and 2, a nail gun-shaped combustion tool 100 for driving nails into a substrate is shown. The combustion tool 100 comprises a fuel cartridge 10, a power supply means 101, In this example, a battery is housed in a body 102 of the tool 100, and an electrical device 11 is electrically connected to the battery 101 to prepare fuel in the fuel cartridge 10 for combustion. In this example, the combustion tool 100 has a combustion chamber (not visible) which receives the fuel from the cartridge 10, ignites the fuel to drive a piston which, in turn, drives a nail into a substrate in the usual way.

[0082] The fuel can be prepared in various ways, depending on the nature of the fuel and its vapor pressure. For example, combustion nailers generally use gaseous fuels stored in the cartridge as pressurized liquids. During metering, the fuel vaporizes, which reduces its temperature and that of the surrounding components. In this case, moderate heating may be sufficient to prepare the fuel for ignition.

[0083] This heating can be achieved by heating the fuel cartridge 10, which can be done in various ways. In the case of the combustion tool 100 of [Fig. 1], the electrical device 11 includes a heating device with a heating element 13. The heating device 11 is mounted in the combustion tool 100 and is intended to make thermal contact with the fuel cartridge 10.

[0084] More specifically, and as illustrated in [Fig.2], the combustion tool 100 includes a foam material 103 between the heating element 13 of the heating device 11 and an adjacent part of the combustion tool 100. When the fuel cartridge 10 is mounted in the combustion tool 100, the foam material 103 causes the heating element 13 to come into thermal contact with the fuel cartridge 10.

[0085] The fuel cartridge 10 can be removed from the body 102 of the combustion tool 100, while the electrical device 11 remains mounted to the body 102. When the fuel cartridge 10 is inserted, a body 12 of the fuel cartridge 10 engages the heating element 13 and compresses the foam material 103, so that the heating element 13 is forced against the body 12.

[0086] Fig. 3 shows a combustion tool 200 according to another example similar to the combustion tool 100 of Fig. 1, where similar references represent similar features, incremented by 100. The combustion tool 200 according to this example differs from that of Fig. 1 in that the electrical device 21 is associated with the fuel cartridge 20 and both are removable from the body 202 of the combustion tool 200.

[0087] More specifically, in the example of [Fig. 4], the heating element 23 comprises two spaced printed circuit boards, fixed to an external surface of the body 202 and electrically connected to each other. This can be achieved using a sticker or a label incorporating the printed circuit boards 23, or by printing them directly onto the surface. Those skilled in the art will understand that a single printed circuit board 23 may be supplied, which may cover any proportion of the outer surface of the body 202.

[0088] The heating element 21 is electrically connected to the battery 201 by electrical contacts (not shown) of the tool 200. These electrical contacts (not shown) can engage with the corresponding electrical contacts (not shown) of the fuel cartridge 20 when the latter is inserted into the body 202. At least one of the contacts may include spring contacts.

[0089] Figure 5 shows a fuel cartridge 30 according to another example similar to the fuel cartridge 20 of Figure 4, where similar reference numerals represent similar characteristics, incremented by 10. The fuel cartridge 30 shown in this example can be used with the combustion tool 200 illustrated in Figure 3. The fuel cartridge 30 according to this example differs from that of Figure 4 in that the body 32 is made of an electrically resistive material. The body 32 therefore functions as a heating element 33 of the heating device 31.

[0090] The inventors observed that only gaseous fuels with a high vaporization pressure are currently used, because they can vaporize at a relatively low temperature. This eliminates candidate fuels that might otherwise be suitable, because they vaporize too slowly at cold temperatures, which would result in an unacceptable delay in the ignition sequence.

[0091] It would therefore be advantageous to provide a device enabling the use of fuels with lower vaporization, such as liquid fuels. It could be beneficial to broaden the range of fuel types usable in combustion tools, and in particular fuels with a low climate impact. However, most of these fuels require an energy source (heat, kinetic energy, microwaves, ultrasound, etc.) to convert them into a combustible state. An example of this type of fuel is ammonia (NH3), which preferably undergoes a cracking process to provide a usable fuel in the combustion process. Cracking ammonia allows the extraction of hydrogen, which has excellent combustion properties, a wide flammability range, and does not generate carbon oxide emissions.

[0092] Although it is possible to adapt the examples described above to introduce sufficient energy into the fuel contained in the cartridge 10, 20, 30 to prepare certain fuels for combustion, the inventors have determined that the direct introduction of heat or other means of activation may be necessary for certain fuels.

[0093] In this regard, [Fig. 6] shows a fuel cartridge 40 according to another example similar to the fuel cartridge 20 of [Fig. 4], where similar references represent similar features, incremented by 20. The fuel cartridge 40 can be used with the combustion tool 200 illustrated in [Fig. 3]. The fuel cartridge 40 according to this example differs from that of [Fig. 4] in that the heating element 43 includes a heating coil in this example, inside the cartridge 40.

[0094] Figure 7 shows a fuel cartridge 50 according to another example similar to the fuel cartridge 40 of Figure 6, where similar references represent similar features, incremented by 10. The fuel cartridge 50 can be used with the combustion tool 200 illustrated in Figure 3. The fuel cartridge 50 according to this example differs from that of Figure 7 in that the electrical device 51 includes a vaporizer in the cartridge 50, which serves to activate the fuel C by vaporizing it before it is introduced into the combustion chamber (not shown).

[0095] The vaporizer 51 includes air inlets 54 at one end of the fuel cartridge 50, a central channel 55 fluidly connecting the air inlets 54 to an outlet 56 at the other end of the fuel cartridge 50, and one or more wicks 57 immersed in the fuel C. The heating element 53 of the vaporizer 51 is located in the central channel 55 and is fluidly connected to the wick(s) 57.

[0096] During use, air is drawn into the central channel 55 from the air inlets 54 by an airflow induction means (not shown) and through the heating element 53. The fuel C is drawn into the heating element 53 through the wick(s) 57 and vaporizes in the airflow passing through the central channel 55.

[0097] Those skilled in the art will understand that other vaporization devices are also conceivable without departing from the scope of the invention. Furthermore, as illustrated in [Fig. 8], the vaporizer 51 does not need to be associated with the fuel cartridge 50.

[0098] More specifically, [Fig. 8] shows a combustion tool 300 according to another example similar to the combustion tool 200 of [Fig. 3], where similar references represent similar features, incremented by 100. In addition, the combustion tool 300 is used with a fuel cartridge 60 which is similar to the fuel cartridge 50 illustrated in [Fig. 7], where similar references represent similar features, incremented by 10. The assembly according to this example differs from that of Figures 3 and 7 in that the vaporizer 61 is external to the fuel cartridge 60. The combustion chamber 304 is also shown.

[0099] Since the fuel C in the fuel cartridge 60 is a liquid, the cartridge 60 may in this case include a plunger 67 immersed in the fuel C, through which the fuel C is drawn by a tube 68 and exits via the outlet 66 to the external vaporizer 61. The vaporizer 61 operates in the same way as the vaporizer 51 described above in relation to the fuel cartridge 50 of [Fig. 7]. As the vaporizer 61 is external to the cartridge 60, the air inlets (not shown) may be upstream or downstream of the vaporizer 61, without necessarily being part of the cartridge 60.

[0100] Furthermore, [Fig.9] shows a combustion tool 400 according to another example similar to the combustion tool 300 of [Fig.8], where similar references represent similar features, incremented by 100. The combustion tool 400 according to this example uses the same fuel cartridge 60 as the tool 300 of [Fig.8], but differs in that the vaporizer 71 includes an ultrasonic actuator and / or a piezoelectric actuator 79. These actuators allow the fuel to be micronized to facilitate its vaporization and combustion.

[0101] It is also envisaged that the electrical device of the combustion tool or fuel cartridge may be configured to activate or prepare a fuel in a different way. For example, when the fuel is ammonia, the electrical device may be configured to subject it to a cracking process before its introduction into the combustion chamber.

[0102] [Fig. 10] shows a combustion tool 500 according to another example similar to the combustion tool 400 of [Fig. 9], where similar references represent similar features, incremented by 100. The combustion tool 500 according to this example differs from that of [Fig. 9] in that the fuel cartridge 560 contains ammonia and the vaporizer 71 is replaced by a converter 571 to convert the ammonia.

[0103] More specifically, the converter 571 is configured to separate or crack ammonia into its constituent elements, in particular nitrogen and hydrogen. These constituent elements are then introduced into the combustion chamber 504 to be ignited.

[0104] [Fig. 11] shows a combustion tool 600 according to another example similar to the combustion tool 500 of [Fig. 10], where similar references represent similar features, incremented by 100. The combustion tool 600 according to this example differs from that of [Fig. 10] in that it includes an evaporator 661 upstream of the converter 671.

[0105] Figure 12 shows a combustion tool 700 according to another example similar to the combustion tool 500 of Figure 10, where similar references represent similar features, incremented by 200. The combustion tool 700 of this example differs from that of [Fig. 10] in that it includes an external reservoir R containing the ammonia, which is removably coupled to the converter 771, and the cartridge 760 includes a storage buffer downstream of the converter 771 to contain the converted fuel. In this example, the cartridge 760 is periodically replenished and therefore does not need to be removable from the body 702.

[0106] [Fig. 13] shows a combustion tool 800 according to another example similar to the combustion tool 700 of [Fig. 12], where similar references represent similar features, incremented by 100. The combustion tool 800 according to this example differs from that of [Fig. 12] in that it includes a filling module 880 which includes the tank R and the converter 871.

[0107] The converter 871 in this example includes a power cable 871a for connection to a mains power supply AS. The filling module 880 is removably connected to the fuel cartridge 860 mounted in the body 802 of the combustion tool 800 for filling. As in the example in [Fig. 12], the cartridge 860 is filled periodically and therefore does not need to be removed from the body 802.

[0108] It is also envisaged that the combustion tool 800 may include another electrical device (not shown), such as a heating device, inside the body 802 which may be powered by a battery (not shown). Other configurations are also envisaged without departing from the scope of the invention.

[0109] Although the combustion tools 100, 200, 300, 400, 500, 600, 700, and 800 described above are all nailers, those skilled in the art will understand that the invention can be incorporated into any other suitable combustion tool. Preferably, but not necessarily, these are combustion tools designed to drive fasteners into a substrate, such as a stapler or any other combustion tool of this type.

[0110] A person skilled in the art will understand that the embodiments described above can vary in many ways, provided that they are consistent with the scope of the claims. List of reference signs

[0111] 100 combustion tool

[0112] 101 battery power supply means

[0113] 102 combustion tool body

[0114] 103 foam material

[0115] 10 fuel cartridges

[0116] 11 electrical device in the form of a heating device

[0117] 12 fuel cartridge bodies

[0118] 13 heating element

[0119] 200 combustion tool

[0120] 201 battery-shaped power supply means

[0121] 202 combustion tool body

[0122] 2 0 fuel cartridge

[0123] 21 electrical device in the form of a heating device

[0124] 22 fuel cartridge bodies

[0125] 23 printed circuit board shaped heating element

[0126] 30 fuel cartridges

[0127] 31 electrical device in the form of a heating device

[0128] 32 fuel cartridge body

[0129] 33 body-shaped heating element made of electrically resistive material

[0130] 40 fuel cartridge

[0131] 41 electrical device in the form of a heating device

[0132] 42 fuel cartridge body

[0133] 43 heating element in the form of a heating coil

[0134] 50 fuel cartridges

[0135] 51 electrical device in the form of a vaporizer

[0136] 52 fuel cartridge bodies

[0137] 53 heating element

[0138] 54 air inlets

[0139] 55 central channel

[0140] 56 exit

[0141] 57 wick

[0142] C combustible

[0143] 300 combustion tool

[0144] 301 battery-shaped power supply means

[0145] 302 combustion tool body

[0146] 304 combustion chamber

[0147] 60 fuel cartridges

[0148] 61 external vaporizer-shaped electrical device

[0149] 62 fuel cartridge bodies

[0150] 63 heating element

[0151] 66 exit

[0152] 67 diver

[0153] 68 tube

[0154] 400 combustion tool

[0155] 401 battery-shaped power supply means

[0156] 402 combustion tool body

[0157] 404 combustion chamber

[0158] 71 external vaporizer-shaped electrical device

[0159] 79 ultrasonic actuator and / or a piezoelectric actuator

[0160] 500 combustion tool

[0161] 501 battery-shaped power supply means

[0162] 502 combustion tool body

[0163] 504 combustion chamber

[0164] 560 fuel cartridge

[0165] 571 converter

[0166] 600 combustion tool

[0167] 601 battery-shaped power supply means

[0168] 602 combustion tool body

[0169] 604 combustion chamber

[0170] 660 fuel cartridge

[0171] 661 evaporator

[0172] 671 converter

[0173] 700 combustion tool

[0174] 701 battery-shaped power supply means

[0175] 702 combustion tool body

[0176] 704 combustion chamber

[0177] 760 fuel cartridge

[0178] 771 converter

[0179] R external reservoir

[0180] 800 combustion tool

[0181] 801 battery-shaped power supply means

[0182] 802 combustion tool body

[0183] 804 combustion chamber

[0184] 860 fuel cartridge

[0185] 871 converter

[0186] 871a power cable

[0187] 880 filling module

[0188] AS mains power supply

Claims

Demands

1. A combustion tool (100, 200, 300, 400, 500, 600, 700, 800) comprising a fuel tank (10, 20, 30, 40, 50, 60, 560, 660, 760, 860, R), an electrical power supply means (101, 201, 301, 401, 501, 601, 701, AS) and an electrical device (11, 21, 31, 41, 51, 61, 71, 571, 661, 671, 771, 871) operationally connected to the electrical power supply means to prepare a fuel (C) in the fuel tank for combustion.

2. Combustion tool (100, 200, 300, 400, 500, 600, 700, 800) according to claim 1, wherein the electrical device (11, 21, 31, 41, 51, 61, 71, 571, 661, 671, 771, 871) can be operated to heat or activate the fuel.

3. Combustion tool (200) according to claim 1 or claim 2, wherein the fuel reservoir (20, 30, 40, 50) comprises a cartridge, the electrical device (21, 31, 41, 51) is associated with the fuel cartridge and both are removable from a body (202) of the combustion tool.

4. Combustion tool (100, 300, 400, 500, 600) according to claim 1 or claim 2, wherein the fuel reservoir (10, 60, 560, 660) comprises a cartridge which can be removed from a body (102, 302, 402, 502, 602) of the combustion tool while the electrical device (11, 61, 71, 571, 661, 671) remains mounted on or in the body.

5. Combustion tool (100) according to any one of the preceding claims, wherein the electrical device (11) includes a heating device designed to make thermal contact with the fuel reservoir (10).

6. Combustion tool (200) according to any one of claims 1 to 3, wherein the electrical device (21) comprises a heating device fixed to a surface of the fuel tank (20).

7. Combustion tool (200) according to any one of claims 1 to 3, wherein the electrical device (31) comprises a heating device and the fuel reservoir (30) comprises a body (32) comprising or formed of an electrically resistive material and functioning as a heating element of the heating device.

8. Combustion tool (100, 200, 300, 400, 500, 600, 700, 800) according to any one of claims 1 to 6, wherein the electrical device (11, 21, 31, 61, 71, 571, 661, 671, 771, 871) is external to the fuel tank (10, 20, 30, 60).

9. Combustion tool (200) according to any one of claims 1 to 3, 6 and 7, wherein the electrical device (41, 51) is located at least partly inside the fuel tank (40, 50).

10. Combustion tool (200, 300, 400) according to any one of claims 1 to 4, 8 and 9, wherein the electrical device (51, 61, 71) comprises a vaporizer, for example an ultrasonic actuator and / or a piezoelectric actuator (79).

11. Combustion tool (500, 600, 700, 800) according to claim 1 or claim 2, wherein the electrical device (571, 661, 671, 771, 871) comprises a converter configured to separate or crack the fuel into two or more of its constituent elements.

12. Combustion tool (800) according to claim 11, comprising a filling module (880) including the reservoir (R) and the electrical device (871), wherein the filling module can be removably connected to a fuel cartridge (860) mounted on or in a body (802) of the combustion tool for filling it.

13. Combustion tool (100, 200, 300, 400, 500, 600, 700, 800) according to any one of the preceding claims, wherein the combustion tool comprises a nail gun or a stapler.

14. A fuel cartridge (20, 30, 40, 50) for a combustion tool (200) according to any one of the preceding claims, the fuel cartridge comprising an electrical device (21, 31, 41, 51) for preparing a fuel (C) in the cartridge for its combustion.

15. A fuel cartridge (760, 860) for a combustion tool (700, 800) according to any one of claims 1, 2, 8 and 11 to 13, the fuel cartridge containing a carbon-free fuel.

Images