aerosol generator

Abstract

An aerosol generating device comprising: a heating chamber for generating an aerosol by heating a consumable; a consumable port configured to receive the consumable; and a loader configured to move the consumable between a first position in the consumable port and a second position in the heating chamber, the loader configured to remain within the aerosol generating device at the first position and the second position.

Description

[Technical Field]

[0001] The present disclosure relates to an aerosol-generating device in which an aerosol-forming substrate is heated to form an aerosol. The disclosure is particularly applicable to portable aerosol-generating devices that may be self-contained and low-temperature. Such devices may heat tobacco or other suitable aerosol substrate material by conduction, convection, and / or radiation, rather than by combustion, to generate an aerosol for inhalation. [Background technology]

[0002] The popularity and use of risk reduction or risk modification devices (also known as vaporizers) has grown rapidly in recent years as an aid to assisting regular smokers who wish to quit smoking traditional tobacco products such as cigarettes, cigars, cigarillos, and rolling tobacco. A variety of devices and systems are available that heat or warm aerosolizable substances, as opposed to burning tobacco in traditional tobacco products.

[0003] A commonly available risk reduction or risk modification device is the heated substrate aerosol generator or heat-and-burn device. This type of device generates an aerosol or vapor by heating an aerosol substrate, typically containing moist tobacco or other suitable aerosolizable material, to temperatures typically ranging from 150°C to 350°C. By heating rather than burning or combusting the aerosol substrate, an aerosol is released that contains the ingredients desired by the user but without the toxic and carcinogenic by-products of combustion and burning. Furthermore, aerosols produced by heating tobacco or other aerosolizable material typically do not contain the burnt or bitter taste that can be unpleasant to users due to combustion and burning. Thus, the substrate does not require sugars and other additives typically added to such materials to make the smoke and / or vapor more palatable to users.

[0004] In such devices, a user typically loads the aerosol substrate into the aerosol generating device in the form of a consumable. If the aerosol substrate is solid or compressed, the consumable may include the bare substrate. Alternatively, the aerosol substrate may be contained in a container in the form of a solid, loose material, or liquid.

[0005] To heat the aerosol substrate, the consumables are often placed in a heating chamber configured to provide heat to generate the aerosol. The heating chamber is accessed by a user to replace the consumables, for example, by opening a door in the device. However, this has the disadvantage that such access to the heating chamber typically affects the insulation of the heating chamber, thus reducing heating efficiency.

[0006] One known solution is to provide a long insert that can be removed from the body of the aerosol generator. The user adds the consumables to be held in the insert and then slides the long insert into the correct position inside the aerosol generator. However, this is similar to a door that can be opened and closed in that the detachable insert reduces the insulation of the heating chamber, reducing heating efficiency.

[0007] As a result, it is desirable to provide an aerosol generating device configured to receive a consumable and heat the consumable within a heating chamber without requiring a user to access the heating chamber to replace the consumable. Summary of the Invention

[0008] According to a first aspect, the present disclosure provides an aerosol generating device comprising: a heating chamber for generating an aerosol by heating a consumable; a consumable port configured to receive the consumable; and a loader configured to move the consumable between a first position in the consumable port and a second position in the heating chamber, the loader configured to remain within the aerosol generating device at the first position and the second position.

[0009] By providing a loader as part of the aerosol generating device, consumables can be replaced within the heating chamber without requiring the user to access the heating chamber and without compromising the insulation of the heating chamber.

[0010] Additionally, by providing a loader that remains internal to the device, operation of the device can be simplified for the user, with the slider being protected within the device housing.

[0011] Optionally, the heating chamber comprises a heating element and the second location is adjacent to the heating element.

[0012] Optionally, the loader is a slider configured to move the consumable along a loading channel between the consumable port and the heating chamber.

[0013] A slider configured to move along a channel provides a robust and reliable mechanism.

[0014] If the loader is a slider, the loading channel optionally includes one or more protrusions or grooves for mechanically controlling the loader.

[0015] Such mechanical control provides a simple way to control the behavior of the loader as it moves along the channel.

[0016] When the loader is a slider, the device may further comprise a control circuit, the loader comprising a plurality of electrical contacts configured to contact respective electrical contacts of the control circuit when the loader is in one or more positions.

[0017] Such electrical control provides an alternative method of controlling the behavior of the loader as it moves along the channel.

[0018] Where the loader is a slider, the apparatus may include an air flow path from the inlet through the heating chamber to the outlet, the loading channel comprising a portion of the air flow path.

[0019] By using the air flow path necessary to extract the generated aerosol, the loading channel can be provided with reduced impact on the thermal insulation of the heating chamber.

[0020] Where the loading channel comprises a portion of the air flow path, the device may include a mouthpiece that includes a consumable port.

[0021] By including the consumable port in the mouthpiece, the device is easy to operate: specifically, the location at the mouthpiece where the user accesses the aerosol is also the location at which the user accesses the consumable port.

[0022] Where the loading channel comprises a portion of the air flow path, the device may further comprise an openable lid that includes a mouthpiece and that covers the consumable port in a closed position.

[0023] By covering the consumable port with a lid that includes a mouthpiece, the location at which the user accesses the aerosol at the mouthpiece is also the location at which the user accesses the consumable port, but the consumable does not actually need to come into contact with the mouthpiece.

[0024] Optionally, the apparatus further comprises a handle mechanically coupled to the loader.

[0025] The handle allows the user to indirectly position the consumable within the heating chamber, meaning that there is no need to power the loader.

[0026] Optionally, the loader comprises a gripping element configured to grip the consumable as the loader moves between the first and second positions.

[0027] By gripping the consumable rather than pushing it, the pressure applied to the consumable during movement between the first and second positions can be more precisely controlled, reducing the likelihood of the consumable bending or jamming during movement.

[0028] 11. The aerosol generating device of claim 1, wherein the loader comprises a compression element configured to compress the consumable against a wall of the heating chamber.

[0029] Compressing the consumable while it is being heated has the effect of improving aerosol generation yield.

[0030] Optionally, the loader comprises an ejector element configured to at least partially eject the consumable from the consumable port.

[0031] The ejector element makes it easier to extract the consumable after use in the aerosol generating device. For example, aerosol substrates can release oily or sticky substances upon heating and aerosol generation, making them more difficult to remove from the aerosol generating device than to insert.

[0032] 13. The aerosol generating device according to claim 1, wherein the loader comprises a loader heating element.

[0033] By providing a heating element within the loader, the heating rate can be increased and the heating uniformity can be improved.

[0034] Optionally, the loader heating element is removable and the consumable port is configured to allow access to the loader heating element.

[0035] By providing a removable heating element in the loader, the heating element can be more easily replaced when the loader is in the first position.

[0036] Optionally, the aerosol generation device further comprises a locking element operable to lock the loader in the second position or to prevent the loader from returning to the first position. Preferably, the locking element is automatically controlled based on a temperature sensor to prevent the consumable from returning to the first position after aerosol generation before the consumable has cooled to a safe handling temperature. [Brief explanation of the drawings]

[0037] [Figures 1A-1C] 1 is a schematic cross-sectional view of an aerosol generating device having a loader. [Figure 2A-2B] FIG. 1 is a schematic perspective view of an aerosol generating device. [Figure 3A-3C] 1 is a schematic cross-sectional view of an aerosol generating device having an ejector element. [Figure 4A-4B] 1 is a schematic cross-sectional view of an aerosol generating device having a compression element. [Figure 5A-5B] 1 is a schematic cross-sectional view of an aerosol generating device having a movable mouthpiece. [Figures 6A-6B] 1 is a schematic cross-sectional view of an alternative aerosol generating device having a loader. DETAILED DESCRIPTION OF THE INVENTION

[0038] 1A to 1C are schematic cross-sectional views of an aerosol generating device 1. FIG.

[0039] The aerosol generating device 1 comprises a heating chamber 11 configured to generate an aerosol by heating a consumable product 2 .

[0040] In this embodiment, the heating chamber 11 comprises a heating element 111. The heating element 111 may be, for example, an electric heating element configured to receive power from a power supply (located within the aerosol generation device 1 or externally connected) and configured to provide resistive heating. The aerosol generation device 1 may also comprise control circuitry (not shown) for controlling the operation of the heating element. Alternatively, other types of heating elements may be used, such as fuel-burning heating elements.

[0041] The heating chamber 11 is connected to an air flow path 12 from an inlet 121 through the heating chamber 11 to an outlet 122 to transport the aerosol out of the heating chamber 11. In this case, the outlet 122 is formed as a mouthpiece for a user to inhale the aerosol generated in the heating chamber 11. In other embodiments, the aerosol generating device 1 may include a pump for pumping the aerosol from the heating chamber in the air flow path.

[0042] The consumable product 2 may be, for example, a freestanding portion of an aerosol substrate. In a typical example, the consumable product may be approximately rectangular. The substrate may include nicotine or tobacco and an aerosol-forming agent. The tobacco may be in the form of various materials, such as cut tobacco, granulated tobacco, tobacco leaf, and / or reconstituted tobacco. Suitable aerosol-forming agents include polyols (such as sorbitol, glycerol, and glycols such as propylene glycol or triethylene glycol), non-polyols (such as monohydric alcohols, acids such as lactic acid, glycerol derivatives, triacetin, triethylene glycol diacetate, triethyl citrate, and esters such as glycerin or vegetable glycerin). In some embodiments, the aerosol-generating agent may be glycerol, propylene glycol, or a mixture of glycerol and propylene glycol. The substrate may also include at least one of a gelling agent, a binder, a stabilizer, and a humectant.

[0043] The substrate may be porous so that air can flow through the substrate and collect aerosols as it does so. The substrate may be, for example, a foam or packed strands or fibers. Alternatively, if the substrate is not porous, the substrate may form vapors on its surface, which may form aerosols in the airflow passing over its surface. The substrate may be formed into a stable shape through an extrusion and / or rolling process.

[0044] In addition to being porous, the aerosol substrate may be shaped to provide one or more air passages, which may be aligned with the air passages 12 of the aerosol generating device 1 to increase airflow through the heating chamber 11.

[0045] The consumable product may further include a breathable wrapping material covering at least a portion of the surface of the aerosol-generating substrate. The wrapping material may include, for example, paper and / or nonwoven fabric.

[0046] To position the consumable 2 within the heating chamber 11, the aerosol generation device 1 further comprises a consumable port 13 configured to receive the consumable 2 and a loader 14 configured to move the consumable 2 between a first position at the consumable port 13 (shown in FIG. 1A) and a second position in the heating chamber 11 (shown in FIGS. 1B and 1C). In this example, the second position is adjacent to the heating element 111, so that the consumable 2 is positioned for heating.

[0047] The loader can then move the consumable to a second location because the consumable port 13 is an opening on the exterior of the aerosol generation device 1 that is sized to receive the consumable in the first location. For example, the consumable port 13 may provide access for a user to position the consumable in the first location.

[0048] Additionally, when the consumable 2 has been used to generate an aerosol, the consumable port 13 can be used to remove the consumable 2 from the aerosol generation device 1. The output consumable port for removing the consumable may be different from the consumable port 13 for receiving the consumable 2, in which case the loader 14 may be configured to move the consumable 2 from a first position at the consumable port 13 to a second position in the heating chamber 11 and then to a third position at the output consumable port. The consumable port 13 (or multiple consumable ports) may be closable with a lid (not shown).

[0049] The loader 14 is a component configured to move within the aerosol generation device 1 and simultaneously move the consumable 2. For example, in the embodiment of Figures 1A-1C, the loader 14 is a slider configured to move the consumable along a loading channel between the consumable port and the heating chamber.

[0050] 1A-1C, in this embodiment, the loading channel is part of the air flow path 12 and the consumable port 13 is also the outlet 122 of the air flow path, although in other embodiments this may not be the case. For example, the consumable port 13 may be the inlet 121 of the air flow path 12. As a further alternative, the loading channel may be positioned perpendicular to the air flow path 12 and the consumable port 13 may not be part of the air flow path 12.

[0051] The loader 14 may have various features to assist in moving the consumable 2 between the first and second positions or to assist in heating.

[0052] 1A-1C, the loader 14 includes a gripping element 141 configured to grip the consumable 2 as the loader 14 moves between the first and second positions. The gripping element may take the form of one or more protrusions (e.g., spikes) or ribs that grip the consumable 2 by friction or by piercing the consumable 2. Alternatively, the loader 14 may simply have a surface that provides sufficient static friction to hold the consumable 2 in place as the loader 14 moves, or may have a pressing element that pushes against the consumable 2 from behind against the direction of movement.

[0053] 1A-1C, the loader 14 includes a loader heating element 142 configured to provide additional heating to the consumable 2 when the loader 14 is in the second position. The loader heating element 142 may be similar to the heating element 111. For example, if the loader heating element 142 is an electric heating element, the loader heating element 142 may receive power via a pair of sliding electrical contacts disposed on the slider 14 and the loading channel. The pair of sliding electrical contacts may be configured such that the loader heating element 142 only receives power when the loader 14 is in the second position.

[0054] In addition to assisting in heating the consumables 2, the loader heating element 142 can be configured to assist in maintenance of the aerosol generation device 1. That is, the loader heating element 142 can be configured to be removable from the loader 14, and the consumables port 13 can be configured to allow access to the loader heating element 142. In this configuration, the loader heating element 142 can be relatively easily removed for cleaning or replacement.

[0055] The aerosol generation device 1 can be operated with only one heating element, so in some embodiments, either the heating element 111 or the loader heating element 142 may be omitted.

[0056] The aerosol generation device 1 may have additional features to facilitate maintenance of the aerosol generation device 1. For example, the loading port 13 may be configured to open from the loader 14's normal position within the housing of the aerosol generation device 1 to a maintenance position that allows the loader 14 to be removed. When the loader 14 is removed, the loader 14 and / or the loading channel may be cleaned. For example, the loader 14 and / or the loading channel may be cleaned with a foam or sponge to remove condensation from the aerosol and residue from the substrate. Additionally, the loader 14 may be a replaceable part that is replaced after, for example, approximately 50 consumables 2 have been loaded into the device 1 and used.

[0057] Additionally, the loading port 13 may be configured to accept a cleaning element, such as a foam or sponge, having dimensions similar to the consumable 2. The cleaning element may be "loaded" along the loading channel in the same manner as the consumable 2 to wipe the loading channel without opening the loading port 13 to the maintenance position.

[0058] 1A-1C, the loader 14 is mechanically coupled to a handle 15. The handle 15 can be manually operated to move the loader 14 between the first and second positions. In alternative embodiments, the loader 14 can be moved by other means, such as an electric actuator, eliminating the need for the handle 15. However, manual operation via the handle 15 has the advantage of reducing the complexity of the device 1 and the number of potential points of failure. More specifically, the actuator may become a limiting factor in the lifespan of the aerosol generation device 1 if it is susceptible to damage under the high temperature conditions of the heating chamber 11 during use or to blockage by aerosol generation residue.

[0059] The handle 15 may also be configured to allow manual compression of the consumable 2 via the loader 14, as illustrated in FIG. 1C . Such compression increases friction for moving the consumable 2 between the first and second positions. Additionally, the inventors have discovered that compressing the consumable 2 during heating can increase aerosol generation. Therefore, it is particularly advantageous to configure the handle 15 and loader 14 to allow manual compression of the consumable 2 against the walls of the heating chamber 11 when the loader 14 is in the second position, particularly when the consumable 2 is compressed near the heating element 111 (if present).

[0060] 2A and 2B are schematic perspective views of an aerosol generating device, providing additional context for the cross-sectional views of FIGS. 1A-1C.

[0061] As shown in Figure 2A, the mechanical connection between handle 15 and loader 14 (not visible in Figure 2A) extends through slot 16. By sliding handle 15 along slot 16, loader 14 moves from a first position (Figures 1A and 2A) to a second position (Figures 1B and 2B).

[0062] To prevent the slot 16 from affecting the airflow in the air passage 12, the slot 16 may be made as narrow as possible and may be provided with a self-sealing element, such as a strip of elastomeric material. Alternatively, the mechanical connection may be an indirect connection, for example via a pivot or cable, such that there is no air connection between the air passage 12 and the external mechanism of the handle 15.

[0063] Figures 3A to 3C are schematic cross-sectional views of an aerosol generation device 1 having an ejector element 17. This is a variant of the aerosol generation device 1 shown in Figures 1A to 1C, where like numerical references refer to like features and only the differences will be described here.

[0064] Ejector element 17 is an element attached to loader 14 but configured to move relative to loader 14 to at least partially eject consumable 2 from consumable port 13 .

[0065] The loader 14 is connected to the ejector element 17 via a coupling 171. The coupling 171 can be a channel with defined ends so that the ejector element 17 has a defined range of motion relative to the loader 14 but is not constrained within the range of motion. Alternatively, as shown in FIGS. 1A-1C, the coupling 171 can be a resilient element (e.g., a spring) configured to bias the ejector element 17 to a default position (as shown in FIG. 3A) with a space between the consumable 2 and the ejector element 17.

[0066] The ejector element 17 may be configured such that when the loader 14 moves from the first position to the second position, the ejector element 17 does not interact with the consumable. On the other hand, when the loader 14 moves from the second position to the first position, the ejector element 17 moves relative to the loader to at least partially eject the consumable 2 from the consumable port 13. A resilient element (if present) may then reset the ejector element 17 to its default position relative to the loader 14.

[0067] 3A-3C, handle 15 is connected to ejector element 17, and resilient element 171 transmits force to loader 14 so that handle 15 can be used to move loader 14 as shown in FIGS. 1A-1C. Alternatively, ejector element 17 may be electrically actuated to move relative to loader 14, and handle 15 may be mechanically coupled directly to loader 14, or may be omitted.

[0068] 3A-3C illustrate a further optional feature (which may be included independently of the ejector element 17): the gripping element 141 may be configured to retract when the loader 14 is in the first position. This may be controlled by an electrical actuator (e.g., an electrical contact pair similar to that described for the loader heating element 142) or a mechanical system. This configuration may make it easier to add or remove the consumable 2 through the consumable port 13 while still providing a gripping effect to move the consumable 2 between the first and second positions.

[0069] Figures 4A and 4B are schematic cross-sectional views of an aerosol generation device having a compression element 144. This is a variant of the aerosol generation device 1 shown in Figures 1A-1C or 3A-3C, where like numerical references refer to like features and only the differences will be described here.

[0070] 1C, the handle 15 was used to manually compress the consumable 2 via the loader 14. Alternatively, the loader 14 may include a compression element 144 configured to automatically compress the consumable 2 when the loader 14 is in the second position.

[0071] 4A, the loader 14 may be constrained to move along a rail 143 defined within the loading channel. A surface 145 of the loading channel may be configured at a variable distance from the rail 143 to provide one or more protrusions or grooves for mechanical control of the loader.

[0072] 4A and 4B, the rail 143 and variable surface 145 can be used to automatically operate the compression element 144. That is, as the distance between the surface 145 and the rail 143 decreases, the compression element 144 is pushed toward the consumable 2, compressing the consumable. When the loader 14 moves in the opposite direction back along the rail, the distance between the surface 145 and the rail 143 increases, and the compression element 144 is released and returns to its uncompressed position due to the resilience of the consumable 2 or due to the presence of an additional resilient element (not shown).

[0073] Surface 145 and rail 143 may similarly be used to control, for example, ejector element 17 or gripper element 141 depending on the position of loader 14 along the loading channel.

[0074] Alternatively, the compression element may be electrically actuated, for example powered by a common sliding electrical contact that is also used for the loader heating element 142 (if present).

[0075] 5A and 5B are schematic cross-sectional views of an aerosol generating device 1 having a movable mouthpiece 18. FIG.

[0076] More specifically, this embodiment is a variation of any of the above embodiments and has the additional optional feature of an opening and closing lid 18 with a mouthpiece, the lid 18 being configured to cover the consumable port 13 in the closed position.

[0077] The lid 18 may be completely removable or may be attached to the body of the aerosol generating device 1 using, for example, a hinge 19 .

[0078] FIG. 5A illustrates the closed position in which the air flow passage 12 connects directly to the mouthpiece and provides an outlet 122 at the end of the lid 18 .

[0079] FIG. 5B illustrates the open position in which the consumable port 13 is accessible.

[0080] 5A and 5B with the example of FIGS. 1A-1C, the retractable lid 18 has the advantage that the consumable 2 does not need to come into contact with the outlet 122, thus reducing the likelihood of debris from the consumable 2 being found at the outlet 122. The user can place their mouth near the outlet 122 to inhale the aerosol, and thus the retractable lid 18 improves the user's aerosol inhalation experience by reducing the likelihood of inhaling solid materials that may affect the taste of the aerosol.

[0081] 6A and 6B are schematic cross-sectional views of an alternative aerosol generating device having a different type of loader 14' that is not a slider.

[0082] 6A and 6B, the loader 14' and consumable port 13' are spaced apart from the air flow path 12. For example, the loader 14' and consumable port 13' may be configured to move the consumable 2 between a first position and a second position that are on a line perpendicular to the air flow path 12.

[0083] In the example shown in Figures 6A and 6B, the loader 14' takes the form of a pivoting and swinging mechanism fixed within the housing of the aerosol generating device.

[0084] The loader 14 ′ moves the consumable from a first position at the consumable port 13 ′ through a cavity within the housing to a second position adjacent the heating element 111 of the heating chamber 11 .

[0085] As air is drawn along the air flow path 12, the air pressure adjacent the consumable 2 is reduced and aerosol is drawn from the consumable 2 into the air flow path 12. Alternatively, a side loading mechanism similar to that of Figures 6A and 6B can be used to position the consumable 2 in a second position within the air flow path 12 so that more aerosol is drawn by the user's inhalation.

[0086] A further optional feature of the aerosol generating device according to the above description is a locking element operable to lock the loader in the second position or to prevent the loader from returning to the first position. The locking element may be, for example, a peg disposed in the loading channel that extends to prevent the loader from moving along the loading channel past the peg or that extends into a slot in the loader to hold the loader in place.

[0087] Preferably, the locking element is automatically controlled based on a temperature sensor to prevent the consumable from returning to the first position after aerosol generation before the consumable has cooled to a safe handling temperature. For example, the locking element may simply have a temperature-dependent shape (e.g., a bimetallic strip) that extends to block or retain the loader when a threshold temperature is exceeded. Alternatively, the loader 14 or loading channel may include a temperature sensor connected to control circuitry, which may be configured to actively activate the locking element when the sensed temperature exceeds the threshold temperature.

Claims

1. An aerosol generating device, comprising: a heating chamber for generating an aerosol by heating the consumable; a consumable port configured to receive the consumable; a loader configured to move the consumable between a first position in the consumable port and a second position in the heating chamber; a handle mechanically coupled to the loader, disposed on an outer surface of the aerosol generating device, and movable along a longitudinal direction of the aerosol generating device, the handle being manually operated to move the loader between the first position and the second position; Equipped with the loader is configured to remain within the aerosol generation device at the first position and the second position; the loader is configured to move with the consumable along a loading channel between the consumable port and the heating chamber; the loader comprising a compression element configured to compress the consumable against a wall of the heating chamber; an inner wall of the loading channel having a sloped surface against which the compression element slides so as to compress the consumable as the loader moves from the first position toward the second position; Aerosol generator.

2. 2. The aerosol generating device of claim 1, wherein the heating chamber comprises a heating element, and the second location is adjacent to the heating element.

3. 3. The aerosol generating device of claim 1, wherein the loading channel comprises one or more protrusions or grooves for mechanically controlling the loader.

4. An aerosol generating device as described in any one of claims 1 to 3, further comprising a control circuit, wherein the loader comprises a plurality of electrical contacts configured to contact respective electrical contacts of the control circuit when the loader is in one or more positions.

5. 5. The aerosol generating device of claim 1, wherein the aerosol generating device includes an air flow path from an inlet through the heating chamber to an outlet, and the loading channel includes a portion of the air flow path.

6. The aerosol generating device of claim 5 , further comprising a mouthpiece comprising the consumable port.

7. 7. The aerosol generating device of claim 6, further comprising an opening and closing lid that includes the mouthpiece and covers the consumable port in a closed position.

8. 8. An aerosol generating device as described in any one of claims 1 to 7, wherein a slot is formed along the longitudinal direction on the outer surface of the aerosol generating device, and a mechanical connection between the loader and the handle extends through the slot.

9. 9. The aerosol generating device of claim 1, wherein the loader comprises a gripping element configured to grip the consumable as the loader moves between the first position and the second position.

10. 10. The aerosol generating device of claim 1, wherein the loader comprises an ejector element configured to at least partially eject the consumable from the consumable port.

11. 11. An aerosol generating device according to claim 1, wherein the loader comprises a loader heating element.

12. 12. The aerosol generating device of claim 11, wherein the loader heating element is removable and the consumable port is configured to allow access to the loader heating element.

13. 13. An aerosol generating device according to any one of claims 1 to 12, further comprising a locking element operable to lock the loader in the second position or to prevent the loader from returning to the first position.

Images