Patent Description:
The aerosol generation device includes an atomizer and a power supply device electrically connected to the atomizer. The atomizer is provided with a liquid storage chamber and an atomizing assembly. Under the electric driving of the power supply device, the atomizing assembly heats the aerosol-forming substrate supplied by the liquid storage chamber to form smoke for the user to inhale. When the aerosol-forming substrate in the aerosol generation device is used up, the e-liquid can be injected into the liquid storage chamber through the liquid injection structure on the aerosol generation device. However, in the existing aerosol generation device, the liquid injection tube needs to be pressed into the liquid storage chamber before liquid injection, and the aerosol-forming substrate in the liquid storage chamber affects the aerosol-forming substrate in the liquid injection tube to flow out from the liquid injection tube, thereby causing liquid injection being not smooth. <CIT> discloses an aerosol generating device with a liquid injection structure comprising a nozzle with a sleeve, an elastic member in the form of a spring and a plunger placed within said nozzle. <CIT> discloses an aerosol generating device with a liquid injection structure comprising a sleeve, a liquid injection tube and a positioning member.

In view of above, the present disclosure provides a liquid injection structure, an atomizer and an aerosol generation device that can be prevented from being easily opened by children.

The technical solution adopted by the present disclosure to solve the problem is: a liquid injection structure includes a sleeve, an elastic member, a positioning member disposed in the sleeve and fixedly connected to the sleeve, and a liquid injection tube slidably arranged between the sleeve and the positioning member; wherein one end of the elastic member abuts against the sleeve, the other end of the elastic member abuts against the liquid injection tube, the sleeve is provided with a first liquid injection port, one end of the liquid injection tube away from the first liquid injection port is provided with a second liquid injection port; when the liquid injection tube abuts against the positioning member, the first liquid injection port is not communicated with the second liquid injection port; by sliding the liquid injection tube relative to the positioning member, the liquid injection tube compresses the elastic member, and the sealing of the positioning member to the liquid injection tube is removed such that the first liquid injection port is communicated with the second liquid injection port.

Further, the liquid injection tube is provided with a sliding portion, the positioning member is provided with a sealing portion configured for sealing the sliding portion.

Further, the positioning member further includes a positioning main body, the sealing portion is provided at one end of the positioning main body, the sealing portion and the positioning main body form a T-shaped structure, the sliding portion is a protrusion protruding from one end of the liquid injection tube, the sliding portion is provided with a penetrating hole, a diameter of the penetrating hole is between an outer diameter of the positioning main body and an outer diameter of the sealing portion, the liquid injection tube is sleeved at the outside of the positioning main body, the gap between an inner wall of the penetrating hole and an outer wall of the positioning main body forms a liquid inlet passage, the liquid inlet passage can be sealed by the sealing portion.

Further, the liquid injection structure further includes a first sealing member, the first sealing member is sleeved at the outside the positioning main body and is located near the sealing portion, an outer diameter of the first sealing member is larger than the diameter of the penetrating hole.

Further, the liquid injection structure further includes a second sealing member, and the second sealing member is sandwiched between the sleeve and the liquid injection tube.

Further, an outer peripheral wall of the liquid injection tube is recessed to form an accommodation groove along a circumferential direction of the liquid injection tube, an inner ring of the second sealing member is accommodated in the accommodation groove, an outer ring of the second sealing member is sandwiched between the sleeve and the liquid injection tube.

Further, the sleeve is provided with an air exhaust port, and one end of the sleeve is opened to form an open end, by sliding the liquid injection tube relative to the positioning member, the air exhaust port is communicated with the open end.

Further, the elastic member is a spring, and the elastic member is sleeved at the outside of the positioning member.

An atomizer includes the liquid injection structure described above, wherein the atomizer further includes a liquid storage assembly, the liquid storage assembly includes a liquid storage shell with a liquid storage chamber, the liquid injection structure is mounted to the liquid storage shell, the sleeve is provided with an air exhaust port, both the air exhaust port and the first liquid injection port communicate with the liquid storage chamber.

An aerosol generation device includes the atomizer described above.

The beneficial effects of the present disclosure are: in the liquid injection structure, the atomizer or the aerosol generation device provided by the present disclosure, by setting the positioning member in the sleeve and slidably setting the liquid injection tube between the sleeve and the positioning member, the liquid injection operation can be performed by sliding the liquid injection tube relative to the positioning member in the sleeve. Therefore, the operation is simple and the liquid injection is convenient.

The following further describes the present disclosure with reference to the accompanying drawings and embodiments.

The part names and reference signs shown in the figures are as follows:.

The present disclosure will now be described in detail with reference to the accompanying drawings. These figures are simplified schematic diagrams, which only illustrate the basic structure of the present disclosure in a schematic manner, so they only show the structures related to the present disclosure.

As shown in <FIG>, the present disclosure provides an aerosol generation device, the aerosol generation device includes an atomizer <NUM> and a power supply device electrically connected to the atomizer <NUM>. In use, the power supply device supplies power to the atomizer <NUM>, so that the aerosol-forming substrate stored in the atomizer <NUM> is atomized to generate smoke for the user to inhale.

Referring to <FIG> and <FIG>, the atomizer <NUM> includes a liquid storage assembly <NUM>, an atomizing assembly <NUM> accommodated in the liquid storage assembly <NUM>, and a liquid injection structure <NUM> disposed on the liquid storage assembly <NUM>.

The liquid storage assembly <NUM> includes a liquid storage shell <NUM> and two electrode connecting members <NUM> arranged on the liquid storage shell <NUM>. The liquid storage shell <NUM> includes a liquid storage casing <NUM> and an end cover <NUM> disposed at one end of the liquid storage casing <NUM>. The liquid storage casing <NUM> is a hollow cylindrical structure with one open end. The liquid storage casing <NUM> is hollow inside to form a liquid storage chamber <NUM>. An inner wall of one end of the liquid storage casing <NUM> away from the end cover <NUM> extends toward the end cover <NUM> to form a vent tube <NUM>, and the liquid storage casing <NUM> is provided with a smoke outlet port <NUM> that communicates with the inner cavity of the vent tube <NUM>. The end cover <NUM> is located at the open end of the liquid storage casing <NUM> to seal the liquid storage chamber <NUM>. The end cover <NUM> is recessed to form a mounting groove <NUM> communicating with the liquid storage chamber <NUM>. The inner wall of the mounting groove <NUM> is provided with a step surface <NUM>. The end cover <NUM> is provided with an air inlet hole <NUM>. The two electrode connecting members <NUM> are arranged on the end cover <NUM>. One of the electrode connecting members <NUM> is electrically connected to one of the positive and negative electrodes of the power supply device. The other electrode connecting member <NUM> is electrically connected to the other electrode of the positive and negative electrodes of the power supply device.

In one specific embodiment, the liquid storage assembly <NUM> further includes a connecting member <NUM>. The connecting member <NUM> is accommodated in the open end of the liquid storage casing <NUM>. The connecting member <NUM> is provided with a through hole <NUM> and a communication hole. The through hole <NUM> communicates with the mounting groove <NUM>. The communication hole communicates with the air inlet hole <NUM>. By providing the connecting member <NUM>, the sealing between the end cover <NUM> and the liquid storage casing <NUM> can be enhanced to prevent the aerosol-forming substrate in the liquid storage chamber <NUM> from leaking from the gap between the end cover <NUM> and the liquid storage casing <NUM>. It can be understood that, in this embodiment, the connecting member <NUM> is made of a sealing material such as silicone or rubber.

The atomizing assembly <NUM> includes an atomizing tube <NUM> and a heating structure <NUM> accommodated in the atomizing tube <NUM>.

The atomizing tube <NUM> is accommodated in the liquid storage chamber <NUM>. One end of the atomizing tube <NUM> is connected with the connecting member <NUM>, the other end of the atomizing tube <NUM> is connected with the vent tube <NUM>. The inside of the atomizing tube <NUM> is hollow to form an atomizing chamber <NUM>. The atomizing chamber <NUM> is in communication with the air inlet hole <NUM> and the inner cavity of the vent tube <NUM>. A liquid inlet hole <NUM> is provided at the side wall of the atomizing tube <NUM>. The liquid inlet hole <NUM> communicates with both the liquid storage chamber <NUM> and the atomizing chamber <NUM>.

The heating structure <NUM> is accommodated in the atomizing chamber <NUM>. The heating structure <NUM> includes a liquid guiding member and a heating member that are in contact with each other. The liquid guiding member is used to absorb the aerosol-forming substrate. The heating member is used for heating the aerosol-forming substrate absorbed by the liquid guiding member. The liquid guiding member is in contact with the atomizing tube <NUM>. The heating member is provided with two pins, one of the pins corresponds to and is electrically connected to one of the electrode connecting members <NUM>, so that the heating member is electrically connected to the power supply device. During use, the aerosol-forming substrate in the liquid storage chamber <NUM> enters the atomizing chamber <NUM> through the liquid inlet hole <NUM>, the liquid guiding member absorbs and stores the aerosol-forming substrate; when the aerosol generation device is activated, the heating member heats the aerosol-forming substrate to generate smoke under the electric driving of the power supply device. When the user inhales, the external air enters the atomizing chamber <NUM> through the air inlet hole <NUM> and mixes with the smoke, and the mixed air enters the user's mouth through the inner cavity of the vent tube <NUM> and the smoke outlet port <NUM>. It can be understood that in this embodiment, the liquid guiding member can be any one of cotton, fiber rope, porous ceramics, porous graphite or foamed metal; the heating member can be any one of a heating wire, a heating sheet or a heating cylinder.

In one specific embodiment, the atomizing tube <NUM> includes an outer sleeve <NUM> and an inner sleeve <NUM> accommodated in the outer sleeve <NUM>. The outer sleeve <NUM> and the inner sleeve <NUM> are both hollow cylinders with open ends. The atomizing chamber <NUM> is formed by the inner cavity of the inner sleeve <NUM>. The liquid inlet hole <NUM> is provided in the outer sleeve <NUM>. The inner sleeve <NUM> is provided with a flow hole communicating with the liquid inlet hole <NUM>. A gap for temporarily storing the aerosol-forming substrate is formed between the inner sleeve <NUM> and the outer sleeve <NUM>. The aerosol-forming substrate in the liquid storage chamber <NUM> is prevented from flowing into the atomizing chamber <NUM> in large quantities and cannot be atomized in time by the heating structure <NUM>.

The liquid injection structure <NUM> includes a sleeve <NUM>, an elastic member <NUM>, a positioning member <NUM> disposed in the sleeve <NUM> and fixedly connected to the sleeve <NUM>, and a liquid injection tube <NUM> slidably arranged between the sleeve <NUM> and the positioning member <NUM>. One end of the elastic member <NUM> abuts against the sleeve <NUM>, the other end of the elastic member <NUM> abuts against the liquid injection tube <NUM>. It should be noted that the sleeve <NUM> and the positioning member <NUM> are detachably connected or non-detachably connected. The detachable connection can be screwing connection, snapping connection, etc. The non-detachably connection can be tight fitting connection, welding, etc. Alternatively, the sleeve <NUM> and the positioning member <NUM> can be integrally formed.

As shown in <FIG>, <FIG> and <FIG>, the sleeve <NUM> has a substantially hollow cylindrical structure. One end of the sleeve <NUM> is opened to form an open end <NUM>. The sleeve <NUM> is sequentially provided with an air exhaust port <NUM> and a first liquid injection port <NUM> from a direction close to the open end <NUM> to a direction away from the open end <NUM>. An abutting edge <NUM> is protruded at the outer wall of the sleeve <NUM>. The sleeve <NUM> is mounted in the mounting groove <NUM>. The air exhaust port <NUM> and the first liquid injection port <NUM> are both communicated with the liquid storage chamber <NUM>. The abutting edge <NUM> abuts against the step surface <NUM>, so as to limit the position when installing the sleeve <NUM>.

One end of the positioning member <NUM> is connected to the bottom wall of the inner cavity of the sleeve <NUM>, the other end of the positioning member <NUM> is accommodated in the sleeve <NUM>. The positioning member <NUM> includes a positioning main body <NUM> and a sealing portion <NUM> disposed at one end of the positioning main body <NUM>. The sealing portion <NUM> is disposed at one end of the positioning main body <NUM> away from the bottom wall of the sleeve <NUM>. In this embodiment, the sealing portion <NUM> and the positioning main body <NUM> form a T-shaped structure. The positioning main body <NUM> is radially recessed near the sealing portion <NUM> to form an accommodating groove <NUM>. The liquid injection structure <NUM> further includes a first sealing member <NUM>, the first sealing member <NUM> is sleeved at the outside of the positioning main body <NUM> and accommodated in the accommodating groove <NUM>. In this embodiment, the positioning member <NUM> is integrally formed with the sleeve <NUM>. It can be understood that, in other embodiments not shown, the positioning member <NUM> and the sleeve <NUM> may be formed separately. The bottom wall of the sleeve <NUM> is provided with a receiving groove for installing the positioning member <NUM>. The positioning member <NUM> is provided to prevent the liquid injection tube <NUM> from being separated from the positioning member <NUM> when the liquid injection tube <NUM> slides away from the positioning member <NUM>.

The liquid injection tube <NUM> is roughly in the form of a hollow cylindrical structure with an opening at one end. One end of the liquid injection tube <NUM> is provided with a sliding portion <NUM>. One end of the liquid injection tube <NUM> away from the sliding portion <NUM> is opened to form a second liquid injection port <NUM>. That is, one end of the liquid injection tube <NUM> away from the first liquid injection port <NUM> is provided with a second liquid injection port <NUM>. In this embodiment, the sliding portion <NUM> is a protrusion protruding from one end of the liquid injection tube <NUM>. A penetrating hole <NUM> is defined in the sliding portion <NUM> along the axial direction of the liquid injection tube <NUM>. The diameter of the penetrating hole <NUM> is between the outer diameter of the positioning main body <NUM> and the outer diameter of the sealing portion <NUM>, and the diameter of the penetrating hole <NUM> is smaller than the outer diameter of the first sealing member <NUM>. The other end of the liquid injection tube <NUM> is provided with a flange <NUM>. The diameter of the flange <NUM> is larger than the diameter of the sleeve <NUM>. The outer peripheral wall of the liquid injection tube <NUM> is recessed to form an accommodation groove <NUM> along the circumferential direction of the liquid injection tube <NUM>. The liquid injection structure <NUM> further includes a second sealing member <NUM>. The second sealing member <NUM> is sleeved at the outside of the liquid injection tube <NUM>. The inner ring of the second sealing member <NUM> is accommodated in the accommodation groove <NUM>. The outer ring of the second sealing member <NUM> is sandwiched between the sleeve <NUM> and the liquid injection tube <NUM>, so that the second sealing member <NUM> is sandwiched between the sleeve <NUM> and the liquid injection tube <NUM>. The liquid injection tube <NUM> is accommodated in the sleeve <NUM>, the sliding portion <NUM> is slidably sleeved at the outside of the positioning main body <NUM> through the penetrating hole <NUM>. The gap between the inner wall of the penetrating hole <NUM> and the outer wall of the positioning main body <NUM> forms a liquid inlet passage <NUM>. The liquid inlet passage <NUM> communicates with the inner cavity of the sleeve <NUM>.

The elastic member <NUM> is accommodated in the cavity of the sleeve <NUM>. One end of the elastic member <NUM> abuts against the bottom wall of the sleeve <NUM>, the other end of the elastic member <NUM> abuts against the bottom surface of the sliding portion <NUM> of the liquid injection tube <NUM>. In this embodiment, the elastic member <NUM> is a spring, the elastic member <NUM> is sleeved at the outside of the positioning main body <NUM>.

When the aerosol generation device is in the normal suction state by the user, as shown in <FIG> and <FIG>, the liquid inlet passage <NUM> is sealed by the sealing portion <NUM>, that is, the sliding portion <NUM> is sealed by the sealing portion <NUM>. When injecting liquid into the aerosol generation device, as shown in <FIG> and <FIG>, an external force is applied to move the liquid injection tube <NUM> along the axial direction of the sleeve <NUM> toward the liquid storage chamber <NUM>, and the liquid injection tube <NUM> compresses the elastic member <NUM>, the air in the inner cavity of the sleeve <NUM> is discharged into the liquid storage chamber <NUM> through the first liquid injection port <NUM>. When the sliding portion <NUM> is located far away from the sealing portion <NUM>, the inner cavity of the liquid injection tube <NUM> communicates with the inner cavity of the sleeve <NUM> through the liquid inlet passage <NUM>, and the liquid injection operation can be performed at this time. The aerosol-forming substrate in the inner cavity of the liquid injection tube <NUM> is injected into the inner cavity of the sleeve <NUM> through the liquid inlet passage <NUM>, and then flows into the liquid storage chamber <NUM> through the first liquid injection port <NUM>. The second sealing member <NUM> is located below the air exhaust port <NUM>, and the gas in the liquid storage chamber <NUM> is discharged to the outside of the liquid injection structure <NUM> through the air exhaust port <NUM> and the open end <NUM> in sequence, so as to balance the air pressure inside and outside the liquid storage chamber <NUM>, and accordingly, prevent the aerosol-forming substrate from being unable to be injected into the liquid storage chamber <NUM> due to air pressure problems. When the external force is removed, under the elastic restoring force of the elastic member <NUM>, the liquid injection tube <NUM> moves upward until the liquid injection tube <NUM> abuts against the first sealing member <NUM>, that is, the sliding portion <NUM> is sealed by the sealing portion <NUM>, the liquid injection tube <NUM> stops moving upward, and the liquid inlet passage <NUM> is sealed by the first sealing member <NUM>. At this time, the second sealing member <NUM> seals the air exhaust port <NUM>, thereby sealing the liquid storage chamber <NUM> again.

In this embodiment, the setting of the flange <NUM> is convenient for the user to press the liquid injection tube <NUM> to perform liquid injection operation. When the liquid injection tube <NUM> is caused to slide downward along the axial direction of the sleeve <NUM>, the flange <NUM> abuts against the upper end surface of the sleeve <NUM> to limit the sliding distance of the liquid injection tube <NUM>.

It can be understood that, in this embodiment, the first sealing member <NUM> and the second sealing member <NUM> are both made of sealing materials such as silicone or rubber. The first sealing member <NUM> is sleeved at the outside of the positioning member <NUM>. When liquid injection is not performed, the first sealing member <NUM> seals the liquid inlet passage <NUM> and also enhances the sealing between the positioning member <NUM> and the liquid injection tube <NUM>. The second sealing member <NUM> is sandwiched between the sleeve <NUM> and the liquid injection tube <NUM> to enhance the sealing between the sleeve <NUM> and the liquid injection tube <NUM> and prevent the aerosol-forming substrate in the liquid storage chamber <NUM> from leaking out through the gap between the sleeve <NUM> and the liquid injection tube <NUM>.

In this embodiment, by providing the elastic member <NUM>, the elastic force of the elastic member <NUM> needs to be overcome when the liquid injection tube <NUM> is pressed downward, which can prevent the liquid injection tube <NUM> from being easily pressed to cause the liquid storage chamber <NUM> to be opened by mistake, and thus has a better child protection effect. In addition, after the liquid injection is completed, the liquid injection tube <NUM> can be automatically reset, and the liquid injection tube <NUM> can be re-sealed again without the need of the user to manually move the liquid injection tube <NUM>, so that the operation is simple and convenient. In this embodiment, the elastic member <NUM> is a spring.

In this embodiment, the liquid injection structure <NUM> is mounted in the mounting groove <NUM> of the end cover <NUM>, so as to realize the connection relationship between the liquid injection structure <NUM> and the liquid storage shell <NUM>. It can be understood that, in other embodiments not shown, the liquid injection structure <NUM> can also be mounted at other positions of the liquid storage shell <NUM>; for example, without limitation, the liquid injection structure <NUM> is mounted at the side wall of the liquid storage casing <NUM>. When injecting liquid, the atomizer <NUM> needs to be adjusted to a position where the open end <NUM> of the sleeve <NUM> is located at an upper position, so that the aerosol-forming substrate flows into the liquid storage chamber <NUM> under the action of its own gravity.

In this embodiment, by setting the first liquid injection port <NUM> on the sleeve <NUM>, and the inner diameter of the penetrating hole <NUM> is between the outer diameter of the positioning main body <NUM> and the outer diameter of the sealing portion <NUM>, the gap between the inner wall of the penetrating hole <NUM> and the outer wall of the positioning main body <NUM> forms the liquid inlet passage <NUM> communicating with the first liquid injection port <NUM>. By sliding the liquid injection tube <NUM> relative to the positioning main body <NUM>, the air between the liquid injection tube <NUM> and the sleeve <NUM> can flow into the liquid storage chamber <NUM> through the first liquid injection port <NUM>, which is convenient for pressing the liquid injection tube <NUM>. Further, during liquid injection, the aerosol-forming substrate in the liquid injection tube <NUM> flows into the liquid storage chamber <NUM> through the liquid inlet passage <NUM> and the first liquid injection port <NUM>. The structure is simple. In addition, air or liquid can flow through the first liquid injection port <NUM> as required, so as to avoid forming other ports on the sleeve <NUM> or the positioning member <NUM> and reduce the processing difficulty of the liquid injection structure <NUM>.

The liquid injection structure <NUM> or the atomizer <NUM> provided by the present disclosure, by setting the positioning member <NUM> in the sleeve <NUM> and slidably setting the liquid injection tube <NUM> between the sleeve <NUM> and the positioning member <NUM>, the liquid injection operation can be performed by sliding the liquid injection tube <NUM> relative to the positioning member <NUM> in the sleeve <NUM>. Therefore, the operation is simple and the liquid injection is convenient.

The aerosol generation device provided by the present disclosure has the same technical effects as the above-mentioned atomizer <NUM> because it has all the technical features of the above-mentioned atomizer <NUM>.

Claim 1:
A liquid injection structure (<NUM>) comprising a sleeve (<NUM>), an elastic member (<NUM>), a positioning member (<NUM>) disposed in the sleeve (<NUM>) and fixedly connected to the sleeve (<NUM>), and a liquid injection tube (<NUM>) slidably arranged between the sleeve (<NUM>) and the positioning member (<NUM>); wherein one end of the elastic member (<NUM>) abuts against the sleeve (<NUM>), the other end of the elastic member (<NUM>) abuts against the liquid injection tube (<NUM>), the sleeve (<NUM>) is provided with a first liquid injection port (<NUM>), one end of the liquid injection tube (<NUM>) away from the first liquid injection port (<NUM>) is provided with a second liquid injection port (<NUM>); when the liquid injection tube (<NUM>) abuts against the positioning member (<NUM>), the first liquid injection port (<NUM>) is not communicated with the second liquid injection port (<NUM>); by sliding the liquid injection tube (<NUM>) relative to the positioning member (<NUM>), the liquid injection tube (<NUM>) compresses the elastic member (<NUM>), and the sealing of the positioning member (<NUM>) to the liquid injection tube (<NUM>) is removed such that the first liquid injection port (<NUM>) is communicated with the second liquid injection port (<NUM>).