Patent Description:
Electronic cigarettes are electronic products that imitate cigarettes and have the same appearance, smoke, taste and feel as cigarettes. It is a product that allows users to inhale after atomization liquid containing nicotine is turned into aerosol via atomization, etc. Due to advantages of electronic cigarettes including convenient portability, lacking generation of open flames and environmental protection, electronic cigarettes are favored by many smokers.

An existing electronic cigarette generally includes an atomizing sleeve, a base, an atomizing core, and an air conductive tube. The base, the atomizing core, and the air conductive tube are all received in the atomizing sleeve. The base is located at a lower end of the atomizing sleeve. A lower end of the atomizing core is fixed on the base, and an upper end of the atomization core is connected with the air conductive tube. An upper end of the air conductive tube is connected with an air outlet of the atomization sleeve. A liquid storage cavity for storing atomization liquid is defined and formed between an inner wall of the atomization sleeve, an outer wall of the air tube and an outer wall of the atomization core. Aerosol produced in an atomization channel in the atomization core is discharged out of the electronic cigarette through the air conductive tube and the air outlet.

Since the atomization liquid of the above electronic cigarette is stored in the annular liquid storage cavity between the atomization sleeve and the air conductive tube, in the condition of an outline dimensions of the atomization sleeve being constant, a volume of the liquid storage cavity in the atomization sleeve is reduced by the air conductive tube received in the atomization sleeve. As a result, in order to increase the volume of the liquid storage cavity in the atomization sleeve, a structure design of the electronic cigarette to place an air outlet channel, which connects the atomization channel with the air outlet, outside the atomization sleeve is often adopted. However, how to discharge aerosol produced in the atomization channel in the atomization core received in the atomization sleeve into the air outlet channel outside the atomization sleeve becomes a problem to be solved urgently.

Electronic cigarettes are known from <CIT>, <CIT>, <CIT>, and <CIT>.

The present invention provides an electronic cigarette according to independent claim <NUM>. Further improvements to the electronic cigarette are recited in the dependent claims. In order to solve the aforementioned technical problem of existing technology to discharge aerosol produced in the atomization channel in the atomization core received in the atomization sleeve out of the atomization sleeve, an electronic cigarette is provided in accordance with a preferred embodiment of the present invention to include the following.

The electronic cigarette includes an outer housing.

The electronic cigarette includes an atomizing sheath. The atomizing sheath is received in the outer housing. At least one aerosol output passageway is defined between the outer housing and the atomizing sheath.

The electronic cigarette includes an extending portion. The extending portion extends inwards from an inner wall of the atomizing sheath to divide the atomizing sheath into a first sleeve body and a second sleeve body for respectively storing atomizing liquid therein. The extending portion blocks incompletely the first sleeve body from the second sleeve body so that the first sleeve body and the second sleeve body are spatially communicated with each other.

The electronic cigarette further includes an atomizing core. The atomizing core is disposed in the second sleeve body. An atomizing passageway is formed in the atomizing core. The atomizing core is used to atomize the atomizing liquid for generating aerosol and releasing the generated aerosol into the atomizing passageway.

The extending portion is a hollow structure to form an airflow path penetrating a wall of the atomizing sheath. The airflow path is used to spatially communicate the atomizing passageway with the at least one aerosol output passageway.

Alternatively, the extending portion extends perpendicularly to a lengthwise direction of the atomizing sheath. A liquid storage cavity is formed in the first sleeve body. A transitional storage cavity is formed in the second sleeve body. A communicating through hole is disposed on the extending portion to spatially communicate the liquid storage cavity with the transitional storage cavity.

Alternatively, the first sleeve body includes two separating walls. The at least one aerosol output passageway is separated to become two aerosol output passageways respectively formed between the two separating walls and the outer housing. The two aerosol output passageways are respectively disposed at two opposite sides of the liquid storage cavity, and are respectively spatially communicated with the airflow path.

Alternatively, the electronic cigarette further includes a base seat. The base seat is accommodated and fixed in the second sleeve body. A fixing sleeve part extends from the extending portion toward the base seat. A gap is formed between the base seat and the fixing sleeve part along a lengthwise direction of the atomizing sheath. An end of the atomizing core is received in the fixing sleeve part, and the opposite other end of the atomizing core is received in the base seat. Atomizing liquid stored in the transitional storage cavity enters the atomizing passageway of the atomizing core via the gap to be atomized.

Alternatively, the communicating through hole is set as two communicating through holes. The two communicating through holes are respectively located at two opposite sides of the airflow path.

Alternatively, the electronic cigarette further includes an inhaling nozzle assembly. The inhaling nozzle assembly is disposed at one end of the atomizing sheath to seal the liquid storage cavity. An aerosol outlet is disposed on the inhaling nozzle assembly to be spatially communicated with the at least one aerosol output passageway.

Alternatively, the inhaling nozzle assembly includes a nozzle. The nozzle includes a main body and a connecting piece extending from the main body toward the extending portion. A first protrusion is disposed at a distal end of the connecting piece. A second protrusion is disposed at the atomizing sheath to be engaged with the first protrusion, and the nozzle and the atomizing sheath are therefore undetachably engaged with and fixed to each other.

Alternatively, the inhaling nozzle assembly further includes a sealing piece. A sealing sleeve part extends from the main body toward the extending portion. The sealing sleeve part is received in the liquid storage cavity. The sealing piece surrounds and is disposed outside the sealing sleeve part.

Alternatively, a communication hole is disposed on the sealing piece. A vent is disposed at a sleeve wall of the sealing sleeve part. The communication hole and the vent are spatially communicated with each other.

Alternatively, the outer housing is hollow. A circumferential wall of the outer housing includes at least one window. The atomizing sheath is made by transparent material. A remaining quantity of atomizing liquid stored in the atomizing sheath is viewable from the at least one window.

In comparison with the above existing technology, the extension portion is disposed in the atomizing sheath in accordance with the present invention. The extending portion has a hollow structure therein and forms the airflow path penetrating the wall of the atomizing sheath. The airflow path is used to spatially communicate the atomizing passageway in the atomizing core with the at least one aerosol output passageway outside the atomizing sheath. As a result, a technical solution to dispose the at least one aerosol output passageway outside the atomizing sheath can be achieved. A volume of the liquid storage cavity in the atomizing sheath is increased and a liquid storage quantity of the electronic cigarette is therefore increased.

One or more embodiments in accordance with the present invention are illustratively exemplified for explanation through figures shown in the corresponding attached drawings. These exemplified descriptions do not constitute any limitation on the embodiments. The elements with the same reference numerals in the attached drawings are denoted as similar elements. Unless otherwise stated, the figures in the attached drawings do not constitute any scale limitation.

Illustration of reference numerals in attached drawings in accordance with a preferred embodiment of the present invention is as follows.

In order to facilitate best understanding of the present invention, the present invention will be illustrated in more detail below in conjunction with the attached drawings and preferred embodiments. It should be noted that when an element is expressed as "being fixed to" another element, this element may be directly on the another element, or there may be one or more intervening elements between this element and the another element. When an element is expressed as "being connected to" another element, this element can be directly connected to the another element, or there may be one or more intervening elements between this element and the another element. In addition, terminology used in the specification, such as "up", "down", "left", "right", "inside", "outside", or similar expressions, is only used for descriptive purposes.

Unless otherwise defined, any technical and scientific terminology used in this specification has the same meaning as commonly understood by those skilled in the technical field of the present invention. Terminology used in this specification of the present invention is only for a purpose of describing specific embodiments, and is not used to limit the present invention. Terminology such as "and/or" used in this specification includes any and all combinations of one or more related listed items.

Atomizing liquid disclosed in the present invention can be liquid tobacco, medicine ingredients in a liquid state, or other aromatic ingredient substances volatile due to heating.

Referring to <FIG>, an electronic cigarette <NUM> in accordance with a preferred embodiment of the present invention mainly includes an outer housing <NUM>, an atomizing sheath <NUM>, a base seat <NUM>, an atomizing core <NUM>, a support seat <NUM>, an inhaling nozzle assembly <NUM>, a battery assembly <NUM>, a controlling assembly <NUM> and a lampshade <NUM>.

Referring to <FIG>, the outer housing <NUM> is a lengthwise hollow cylindrical structure, i.e., a length of the outer housing <NUM> is much larger than a diameter of the outer housing <NUM>. A circumferential wall of the outer housing <NUM> has at least one window <NUM>. In the preferred embodiment, the outer housing <NUM> has six windows <NUM> in total. The six windows <NUM> are divided into two sets. Each of the two sets has three windows <NUM> therein. A center connecting line of the three windows <NUM> is parallel to a lengthwise direction of the outer housing <NUM>, i.e., the three windows <NUM> are equidistantly disposed on the outer housing <NUM> along the lengthwise direction of the outer housing <NUM>. Each window of one of the two sets is located at a same height location as a corresponding window of the other of the two sets.

Referring to <FIG> and <FIG>, the atomizing sheath <NUM> is received and fixed in the outer housing <NUM>. A length of the atomizing sheath <NUM> is smaller than the length of the outer housing <NUM>. An upper edge of the atomizing sheath <NUM> is substantially flush with an upper edge of the outer housing <NUM>. An outer wall of the atomizing sheath <NUM> is attachably fixed to an inner wall of the outer housing <NUM>.

The atomizing sheath <NUM> is made by transparent and high-temperature tolerant plastic material, such as material of poly(<NUM>,<NUM>-cyclohexylene dimethylene terephthalate glycol) (Shorted for "PCTG"). PCTG is an amorphous copolyester. A commonly used comonomer in PCTG is cyclohexane dimethanol (CHDM), and therefore a full name of PCTG is poly(<NUM>,<NUM>-cyclohexylene dimethylene terephthalate glycol). PCTG is a polycondensation product under transesterification using three monomers including terephthalic acid (PTA), ethylene glycol (EG) and cyclohexane dimethanol (CHDM). In comparison to polyethylene terephthalate (PET), PCTG additionally includes a comonomer of cyclohexane dimethanol. In comparison to poly(<NUM>,<NUM>-cyclohexamethylene dimethylene terephthalate) (PCT), PCTG additionally includes a comonomer of ethylene glycol.

The atomizing sheath <NUM> is substantially lengthwise cylindrical. An extending portion <NUM> extends inwards from an inner wall of the atomizing sheath <NUM> to divide the atomizing sheath <NUM> into a first sleeve body <NUM> and a second sleeve body <NUM>. The extending portion <NUM> does not completely block the first sleeve body <NUM> from the second sleeve body <NUM> so that the first sleeve body <NUM> and the second sleeve body <NUM> are spatially communicated with each other.

Two separating walls <NUM> are disposed in the first sleeve body <NUM>. The two separating walls <NUM> are parallel to each other and oppositely disposed. The two separating walls <NUM> and the first sleeve body <NUM> cooperatively surround a space therebetween to form a liquid storage cavity <NUM>. Aerosol output passageways <NUM> are disposed outside the separating walls <NUM>, i.e., two aerosol output passageways <NUM> are respectively disposed at two opposite sides of the liquid storage cavity <NUM>. Either one of the two aerosol output passageways <NUM> is cooperatively surrounded to be formed by the first sleeve body <NUM>, a corresponding one of the two separating walls <NUM> and the outer housing <NUM>. An upper edge of either one of the two separating walls <NUM> is lower than an upper edge of the first sleeve body <NUM>. An indentation is formed and located above the either one of the two separating walls <NUM>. A second protrusion <NUM> is disposed to extend toward a center of the first sleeve body <NUM> from an inner wall of an upper edge of the indentation.

The extending portion <NUM> is located below the first sleeve body <NUM>, and extends along a radial direction of the first sleeve body <NUM>. Communicating through holes <NUM> are respectively formed between front and rear sides of the extending portion <NUM> and an inner wall of the first sleeve body <NUM>, i.e., two communicating through holes <NUM> are disposed at the extending portion <NUM>. A fixing sleeve part <NUM> extends from the extending portion <NUM> along a direction facing away from the first sleeve body <NUM>, i.e., the fixing sleeve part <NUM> extends downwards from the extending portion <NUM>. An opening <NUM> are disposed at a location of the extending portion <NUM> corresponding to the fixing sleeve part <NUM>. An airflow path <NUM> is disposed above the fixing sleeve part <NUM> and extends along a radial direction of the atomizing sheath <NUM>. The airflow path <NUM> is spatially communicated with the two aerosol output passageways <NUM> located at its left and right sides. The airflow path <NUM> is located between the two communicating through holes <NUM> at its front and rear sides, i.e., the two communicating through holes <NUM> are respectively located at two opposite sides of the airflow path <NUM>.

The second sleeve body <NUM> is formed to extend from the extending portion <NUM> along the direction facing away from the first sleeve body <NUM>, i.e., the second sleeve body <NUM> extends downwards from the extending portion <NUM>. A length of the second sleeve body <NUM> is smaller than a length of the first sleeve body <NUM>. The fixing sleeve part <NUM> is accommodated in the second sleeve body <NUM>. A transitional storage cavity <NUM> is formed in the second sleeve body <NUM>. The two communicating through holes <NUM> of the extending portion <NUM> are respectively spatially communicated between the liquid storage cavity <NUM> and the transitional storage cavity <NUM>. Since the transitional storage cavity <NUM> is located below the liquid storage cavity <NUM>, atomizing liquid stored in the liquid storage cavity <NUM> will flow to enter the transitional storage cavity <NUM> through the two communicating through holes <NUM> due to gravity. As a result, the atomizing liquid is transiently stored in the transitional storage cavity <NUM>.

The base seat <NUM> is accommodated and fixed in the second sleeve body <NUM>. The base seat <NUM> is made by material of silica gel. An outer wall of the base seat <NUM> is snugly engaged for being fixed on an inner wall of the second sleeve body <NUM> in order to seal the transitional storage cavity <NUM>. The base seat <NUM> includes an accommodating cavity and an air intake passageway <NUM> penetrating between upper and lower sides of the base seat <NUM>. A gap <NUM> is formed between the base seat <NUM> and the fixing sleeve part <NUM> along a lengthwise direction of the atomizing sheath <NUM>.

The atomizing core <NUM> includes a porous body <NUM> and a heating body <NUM>. The porous body <NUM> is used to absorb atomizing liquid stored in the liquid storage cavity <NUM> and transiently store the absorbed atomizing liquid therein, i.e., function of the porous body <NUM> is conducting atomizing liquid. After being electrified, the heating body <NUM> heats atomizing liquid stored in the porous body <NUM> to generate aerosol for direct inhaling of users. The porous body <NUM> is a hollow cylindrical structure. In the preferred embodiment, the porous body <NUM> is made by porous ceramic. Understandably, the porous body <NUM> can be also made by foamed metal, porous glass or hard glass fiber tube. The heating body <NUM> is integrally formed in an inner cavity of the porous body <NUM>. The heating body <NUM> is made by electrically connective metal material. Material to make the heating body <NUM> can be nickel, ferro nickel alloy, ferro chrome aluminum alloy, nickel chrome alloy, stainless steel or titanium alloy, etc..

An upper end of the porous body <NUM> is received and fixed in the fixing sleeve part <NUM>. A lower end of the porous body <NUM> is received and fixed in the base seat <NUM>. Atomizing liquid stored in the transitional storage cavity <NUM> flows to the porous body <NUM> through the gap <NUM> between the fixing sleeve part <NUM> and the base seat <NUM>, and is permeantly conducted from an outer side of the porous body <NUM> to an inner side of the porous body <NUM> in order to be further heated and atomized by the heating body <NUM>. As a result, aerosol is formed in an atomizing passageway <NUM> of the atomizing core <NUM> for direct inhaling of users.

The support seat <NUM> is used to support the base seat <NUM>. The support seat <NUM> includes a seat body <NUM> and a peripheral wall <NUM> extending upwards from the seat body <NUM>. An upper end face of the seat body <NUM> is engaged with a lower end face of the base seat <NUM>. An air intake hole is disposed at a center of the seat body <NUM> to penetrate through the seat body <NUM> between an upper side of the seat body <NUM> and a lower side of the seat body <NUM>. The air intake hole is spatially communicated with the air intake passageway <NUM>. The peripheral wall <NUM> surrounds around an outside of the second sleeve body <NUM>. The support seat <NUM> is made of plastic material having a certain strength, such as being made of material of ethylene-vinyl acetate copolymer (EVA).

Referring to <FIG> and <FIG>, the inhaling nozzle assembly <NUM> includes a nozzle <NUM> and a sealing piece <NUM>. The nozzle <NUM> includes a main body <NUM>. A lower end face of the main body <NUM> is engaged with an upper end face of the outer housing <NUM>. A connecting pillar <NUM> extends downwards from a center of the main body <NUM>. A sealing sleeve part <NUM> extends below the connecting pillar <NUM>. Two vents <NUM> are disposed on the sealing sleeve part <NUM>. The two vents <NUM> are respectively located at two opposite sides of the sealing sleeve part <NUM>. An engaging wall <NUM> is disposed outside a connecting location of the sealing sleeve part <NUM> and the connecting pillar <NUM>. The engaging wall <NUM> is engaged with an upper end face of the fixing sleeve part <NUM>.

Two connecting pieces <NUM> extend downwards from the main body <NUM>. The two connecting pieces <NUM> are respectively located at two opposite sides of the connecting pillar <NUM>. Each of the two connecting pieces <NUM> has a certain resilience and toughness. A first protrusion <NUM> extends at a distal end of the each of the two connecting pieces <NUM> along a direction facing away the connecting pillar <NUM>. The first protrusion <NUM> and the second protrusion <NUM> are engaged with each other. As a result, the nozzle <NUM> and the atomizing sheath <NUM> are undetachably connected.

An aerosol outlet <NUM> penetrating the main body 611between upper and lower sides of the main body <NUM> is disposed in the main body <NUM>. The aerosol outlet <NUM> is spatially communicated with the two aerosol output passageways <NUM>.

The sealing piece <NUM> is made by material of silica gel which has excellent resilience and ductility. The sealing piece <NUM> can be resiliently deformed when being squeezed and/or pressed. The sealing piece <NUM> includes a bottom wall <NUM> and a sleeve wall <NUM> extending upward from the bottom wall <NUM>. A communication hole <NUM> is disposed on the bottom wall <NUM> of the sealing piece <NUM>. The sleeve wall <NUM> surrounds and is disposed outside the sealing sleeve part <NUM>. The sealing sleeve part <NUM> is received in the liquid storage cavity <NUM>. The sealing piece <NUM> is used to seal a clearance between the sealing sleeve part <NUM>, the two separating walls <NUM> and the first sleeve body <NUM>. The communication hole <NUM> is spatially communicated with the liquid storage cavity <NUM> and the two vents <NUM>.

When the inhaling nozzle assembly <NUM> is not yet assembled with the atomizing sheath <NUM>, a clearance is formed between the sleeve wall <NUM> of the sealing piece <NUM> and the sealing sleeve part <NUM>. During a process of a side of the inhaling nozzle assembly <NUM> being gradually inserted into the atomizing sheath <NUM>, remain air in the liquid storage cavity <NUM> will be discharged out of the liquid storage cavity <NUM> successively via the two communicating through holes <NUM> of the sealing piece <NUM>, the two vents <NUM> of the sealing sleeve part <NUM> and the clearance between the sleeve wall <NUM> of the sealing piece <NUM> and the sealing sleeve part <NUM>. As a result, an upward force applied on the inhaling nozzle assembly <NUM> is avoided being generated by the remain excess air in the liquid storage cavity <NUM> being compressed, and the nozzle <NUM> is avoided being pushed out due to the remain air in the liquid storage cavity <NUM>.

After the inhaling nozzle assembly <NUM> is completely assembled with the atomizing sheath <NUM>, the sleeve wall <NUM> of the sealing piece <NUM> is located between the two separating walls <NUM> and the sealing sleeve part <NUM> and is squeezed and pressed to extend and deform so that the sleeve wall <NUM> can fill and block the clearance between the sealing sleeve part <NUM> and the first sleeve body <NUM>. As a result, the atomizing liquid in the liquid storage cavity <NUM> can be avoided to leak from an upper side of the liquid storage cavity <NUM>.

The battery assembly <NUM> is received in and fixed to the outer housing <NUM>. A clearance is formed between an outer wall of the battery assembly <NUM> and the inner wall of the outer housing <NUM>, and external air can enter the air intake hole of the support seat <NUM> through the clearance. The battery assembly <NUM> is located below the support seat <NUM>. The battery assembly <NUM> is mainly used to supply electrical power to the heating body <NUM>, and the heating body <NUM> generates heat after being electrified. As a result, atomizing liquid absorbed by the porous body <NUM> from the gap <NUM> between the fixing sleeve part <NUM> and the base seat <NUM> is heated.

The controlling assembly <NUM> is received in and fixed to the lampshade <NUM>. The lampshade <NUM> is located at a lower end of the outer housing <NUM>. The controlling assembly <NUM> is used to control connection or disconnection between the heating body <NUM> and the battery assembly <NUM>. In a preferred embodiment of the present invention, the controlling assembly <NUM> can be a condenser microphone. Since a working principle of the condenser microphone is a common knowledge in the technical area, i.e., electrification of the heating body <NUM> to heat being controlled by the condenser microphone based on a sucking and inhaling action of users at the nozzle <NUM> is an existing technology in the technical area, details regarding the working principle of the condenser microphone is no longer repeated herein.

A clearance is formed between the lampshade <NUM> and the outer housing <NUM>. When users suck or inhale at the nozzle <NUM>, the condenser microphone controls the heating body <NUM> being electrified to heat, and external air enters the atomizing passageway <NUM> successively through the clearance formed between the outer housing <NUM> and the lampshade <NUM>, the clearance formed between the outer housing <NUM> and the battery assembly <NUM>, the air intake hole of the support seat <NUM> and the air intake passageway <NUM> of the base seat <NUM>. The entering air in the atomizing passageway <NUM> can further carry aerosol generated in the atomizing passageway <NUM> to enter the airflow path <NUM> through the opening <NUM> of the extending portion <NUM>. Subsequently, the air carrying the aerosol is divided by the airflow path <NUM> to respectively flow into the two aerosol output passageways <NUM> located at left and right two sides of the atomizing sheath <NUM>. Finally, the air carrying the aerosol enters a mouth cavity or nasal cavity of users through the aerosol outlet <NUM> to provide the users with senses of stimulation and satisfaction.

In the present invention, the extension portion <NUM> is disposed in the atomizing sheath <NUM> in accordance with the present invention. The extending portion <NUM> has a hollow structure therein and forms the airflow path <NUM> penetrating a wall of the atomizing sheath <NUM>. The airflow path <NUM> is used to spatially communicate the atomizing passageway <NUM> in the atomizing core <NUM> with the at least one aerosol output passageway <NUM> outside the atomizing sheath <NUM>. As a result, a technical solution to discharge aerosol generated in the atomizing sheath <NUM> to the at least one aerosol output passageway <NUM> outside the atomizing sheath <NUM> and a design to dispose the at least one aerosol output passageway <NUM> outside the atomizing sheath <NUM> can be achieved. A volume of the liquid storage cavity <NUM> in the atomizing sheath <NUM> is increased and a liquid storage quantity of the electronic cigarette <NUM> is therefore increased. In the present invention, an end of the atomizing core <NUM> is fixed to the base seat <NUM>, and the other end of the atomizing core <NUM> is fixed to the fixing sleeve part <NUM>. Atomizing liquid in the liquid storage cavity <NUM> enters the atomizing passageway <NUM> of the atomizing core <NUM> through the gap <NUM> between the fixing sleeve part <NUM> and the base seat <NUM> to be atomized and form aerosol for directly inhaling and sucking. As a result, no outer sleeve tube is required to be disposed outside the atomizing core <NUM> of the electronic cigarette <NUM> in accordance with the present invention. Production cost of the electronic cigarette <NUM> is reduced and competition power in the market of the electronic cigarette <NUM> is enhanced.

Claim 1:
An electronic cigarette (<NUM>), comprising:
an outer housing (<NUM>);
an atomizing sheath (<NUM>) received in the outer housing (<NUM>), at least one aerosol output passageway (<NUM>) being defined between the outer housing (<NUM>) and the atomizing sheath (<NUM>);
an extending portion (<NUM>) extending inwards from an inner wall of the atomizing sheath (<NUM>) to divide the atomizing sheath (<NUM>) into a first sleeve body (<NUM>) and a second sleeve body (<NUM>) for respectively storing atomizing liquid therein, the extending portion (<NUM>) blocking incompletely the first sleeve body (<NUM>) from the second sleeve body (<NUM>) so that the first sleeve body (<NUM>) and the second sleeve body (<NUM>) are spatially communicated with each other;
an atomizing core (<NUM>) disposed in the second sleeve body (<NUM>), an atomizing passageway (<NUM>) being formed in the atomizing core (<NUM>), the atomizing core (<NUM>) used to atomize the atomizing liquid for generating aerosol and releasing the generated aerosol into the atomizing passageway (<NUM>);
characterized in that:
wherein the extending portion (<NUM>) is a hollow structure configured to form an airflow path (<NUM>) penetrating a wall of the atomizing sheath (<NUM>), the airflow path (<NUM>) is used to spatially communicate the atomizing passageway (<NUM>) with the at least one aerosol output passageway (<NUM>); the extending portion (<NUM>) defines an opening (<NUM>), so that the aerosol enters the airflow path (<NUM>) via the opening (<NUM>).