ELECTRONIC VAPORIZATION DEVICE AND VAPORIZER THEREOF

A vaporizer includes: a shell; an outer tube disposed in the shell; and an inner tube disposed in the outer tube. An inhalation opening is formed at an end of the shell. A main airway in communication with the inhalation opening is formed inside the inner tube. An auxiliary airway in communication with the inhalation opening is formed between the outer tube and the inner tube.

CROSS-REFERENCE TO PRIOR APPLICATION

Priority is claimed to Chinese patent application Ser. No. 20/231,0073512.X, filed on Jan. 13, 2023, the entire disclosure of which is hereby incorporated by reference herein.

FIELD

The present invention relates to the field of vaporization technologies, and more specifically, to an electronic vaporization device and a vaporizer thereof.

BACKGROUND

An electronic vaporization device is configured to heat and vaporize a vaporizable liquid substrate to generate inhalable aerosols. The electronic vaporization device generally includes a vaporizer and a power supply device. The vaporizer is mainly configured to store a liquid substrate and vaporize the liquid substrate after being energized. The power supply device is mainly configured to recognize an inhalation action, control power supply, and supply power to the vaporizer. An airflow sensor is usually disposed in the power supply device, and is configured to recognize an inhalation action, to determine whether to turn on the electronic vaporization device.

An existing vaporizer usually uses a single-airway structure. In an inhalation process, a main airway is blocked due to the generation of a condensate in the single-airway vaporizer. After the main airway is blocked, the airflow sensor perceives no change in airflow, and as a result the electronic vaporization device can no longer be turned on.

SUMMARY

In an embodiment, the present invention provides a vaporizer, comprising: a shell; an outer tube disposed in the shell; and an inner tube disposed in the outer tube, wherein an inhalation opening is formed at an end of the shell, wherein a main airway in communication with the inhalation opening is formed inside the inner tube, and wherein an auxiliary airway in communication with the inhalation opening is formed between the outer tube and the inner tube.

DETAILED DESCRIPTION

In an embodiment, the present invention provides a vaporizer with a dual-airway structure and an electronic vaporization device with the vaporizer for the foregoing deficiencies in the related art.

In an embodiment, the present invention provides a vaporizer, including a shell, an outer tube disposed in the shell, and an inner tube disposed in the outer tube. An inhalation opening is formed at an end of the shell. A main airway in communication with the inhalation opening is formed inside the inner tube. An auxiliary airway in communication with the inhalation opening is formed between the outer tube and the inner tube.

In some embodiments, the auxiliary airway includes at least one air guide groove recessed to be formed in an outer wall surface of the inner tube and/or an inner wall surface of the outer tube.

In some embodiments, the auxiliary airway includes an annular airflow channel formed between an outer wall surface of the inner tube and an inner wall surface of the outer tube.

In some embodiments, the vaporizer further includes a vaporization assembly that is disposed in the shell and is in communication with the main airway.

In some embodiments, a liquid storage cavity is formed between the shell and the outer tube, and the vaporization assembly is at least partially disposed in the inner tube and is in communication with the liquid storage cavity.

In some embodiments, at least one first liquid inlet in communication with the liquid storage cavity is formed in the outer tube, and at least one second liquid inlet that communicates the at least one first liquid inlet with the vaporization assembly is formed in the inner tube.

In some embodiments, an air inlet channel is further formed in the shell, two ends of the main airway are respectively in communication with the air inlet channel and the inhalation opening, and two ends of the auxiliary airway are respectively in communication with the air inlet channel and the inhalation opening.

In some embodiments, the shell includes a liquid storage shell and a base disposed at a lower end of the liquid storage shell, and the air inlet channel is formed in the base.

In some embodiments, a first mounting hole is concave downward to be formed in a top surface of the base, and lower ends of the outer tube and the inner tube are both accommodated in the first mounting hole.

In some embodiments, a support surface is provided at a bottom of the first mounting hole, lower end surfaces of the outer tube and the inner tube both abut against the support surface, and at least one vent opening that communicates the air inlet channel with the auxiliary airway is further formed in the inner tube.

In some embodiments, the shell further includes a suction nozzle disposed at an upper end of the liquid storage shell, an air outlet hole is formed in the suction nozzle, and the inhalation opening is formed at an outlet at an upper end of the air outlet hole.

In some embodiments, upper ends of the outer tube and the inner tube both extend into the air outlet hole.

The present invention further provides an electronic vaporization device, including the foregoing vaporizer and an airflow sensor that is in communication with the auxiliary airway and the main airway.

Through implementation of the present invention, at least the following beneficial effects are achieved: In the vaporizer of the present invention, the auxiliary airway that is relatively independent from the main airway is added, so that when a blockage occurs in the main airway, during inhalation by a user at the inhalation opening, airflow may bypass the main airway and turn on an airflow sensor through the auxiliary airway. After the vaporizer is energized to generate heat, a viscous liquid substrate in the main airway is heated and diluted, to clear the blockage in the main airway, so that it is ensured that the vaporizer can normally perform inhalation work.

In order to have a clearer understanding of the technical features, the objectives, and the effects of the present invention, specific implementations of the present invention are now illustrated in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention is capable of being practiced in many other ways different from those described herein, and similar improvements may be made by persons skilled in the art without violating the connotations of the present invention, and therefore the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it should be understood that, orientation or position relationships indicated by terms such as “longitudinal”, “transverse”, “upper”, “lower”, “top”, “bottom”, “inner”, and “outer” are orientation or position relationship shown based on the accompanying drawings or generally placed orientation or location relationship of the product of the present invention during use, and are merely used for describing the present invention and simplifying the description, rather than indicating or implying that the mentioned apparatus or element should have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be construed as a limitation to the present invention.

In addition, terms “first” and “second” are merely used for description and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature restricted by “first” or “second” may explicitly indicate or implicitly include at least one of such features. In the description of the present invention, unless otherwise explicitly defined, “a plurality of” means at least two, for example, two, three, and the like.

In the present invention, unless otherwise explicitly specified and defined, terms such as “mounted”, “connected”, “connection”, and “fixed” should be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; or the connection may be a mechanical connection or may be an electrical connection; or the connection may be a direct connection, an indirect connection through an intermediate medium, or internal communication between two elements or mutual action relationship between two elements, unless otherwise explicitly specified. Persons of ordinary skill in the art may understand the specific meanings of the foregoing terms in the present invention according to specific situations.

In the present invention, unless otherwise explicitly specified and defined, a first feature is “on” or “below” a second feature may mean that the first feature and the second feature are in direct contact, or the first feature and the second feature are in indirect contact through an intermediate medium. In addition, that the first feature is “above” the second feature may indicate that the first feature is directly above or obliquely above the second feature, or may merely indicate that the horizontal position of the first feature is higher than that of the second feature. That the first feature is “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or may merely indicate that the horizontal position of the first feature is lower than that of the second feature.

FIG.1andFIG.2show an electronic vaporization device1according to some embodiments of the present invention. The electronic vaporization device1includes a vaporizer100and a power supply device200fittingly connected to the vaporizer100. The power supply device200generally includes a battery that supplies power to the vaporizer100, an airflow sensor configured to detect a change in airflow, and a control circuit configured to control heat generation of the vaporizer100. The vaporizer100is configured to hold a liquid substrate and is configured to heat and vaporize the liquid substrate after being energized to generate aerosols. In some embodiments, the vaporizer100and the power supply device200may both be approximately in a shape of a cylinder, and may be arranged to provide an axial mechanical connection and an electrical connection together with each other. Further, the vaporizer100and the power supply device200may be connected together in a detachable manner such as a magnetic attraction connection, a threaded connection, or a buckle connection. It may be understood that, in other embodiments, the vaporizer100and the power supply device200may be alternatively connected together in a non-detachable manner. In addition, shapes of the cross sections of the vaporizer100and/or the power supply device200are not limited to a circular shape, and may be other shapes such as an elliptical shape, a racetrack shape, or a rectangular shape.

As shown inFIG.3andFIG.4, in some embodiments, the vaporizer100may include a shell10, an outer tube20disposed in the shell10, an inner tube30disposed in the outer tube20, and a vaporization assembly40disposed in the shell10. A liquid storage cavity110configured to store a liquid substrate is formed in the shell10. An inhalation opening123is formed at an end of the shell10. A main airway33in communication with the inhalation opening123is formed inside the inner tube30. An auxiliary airway23in communication with the inhalation opening123is formed between the inner tube30and the outer tube20. The vaporization assembly40is in liquid-guide communication with the liquid storage cavity110and is in gas-guide communication with the main airway33. The vaporization assembly40can heat and vaporize the liquid substrate from the liquid storage cavity110after being energized to generate aerosols. The aerosols are then outputted through the main airway33to the inhalation opening123for a user to smoke or inhale. In the present invention, the independent auxiliary airway23is added, so that when a blockage occurs in the main airway33, during inhalation by a user at the inhalation opening123, airflow may bypass the main airway33and turn on an airflow sensor through the auxiliary airway23. After the vaporization assembly40is energized to generate heat, a viscous liquid substrate around the vaporization assembly40and inside the main airway33is heated and diluted, to clear the blockage in the main airway33, so that it is ensured that the vaporizer100can normally perform inhalation work.

In some embodiments, an air inlet channel130that communicates the main airway33and the auxiliary airway23with the outside may be further formed in the shell10. Lower ends of the main airway33and the auxiliary airway23are both in communication with the air inlet channel130, and upper ends are both in communication with the inhalation opening123. During inhalation, external air separately enters the main airway33and the auxiliary airway23through the air inlet channel130, and then flows out through the inhalation opening123.

Specifically, the shell10may include a liquid storage shell11, a suction nozzle12disposed at an upper end of the liquid storage shell11, and a base13disposed at a lower end of the liquid storage shell11. The liquid storage shell11may be in a circular tube shape with openings at two ends. The liquid storage cavity110is formed in the liquid storage shell11. A lower end of the suction nozzle12may be inserted in an opening at the upper end of the liquid storage shell11, to block an upper end of the liquid storage cavity110in a sealed manner. In some embodiments, the suction nozzle12may be connected to the upper end of the liquid storage shell11in a detachable manner, so that a liquid substrate may be added to the liquid storage cavity110in a manner of detaching the suction nozzle12from the liquid storage shell11, thereby extending service life of the vaporizer100. In other embodiments, the suction nozzle12and the liquid storage shell11may be connected together in a non-detachable manner, or the suction nozzle12and the liquid storage shell11may be of an integral structure.

An air outlet hole120is formed longitudinally penetrating the suction nozzle12, and the inhalation opening123is formed at an outlet at an upper end of the air outlet hole120. The air outlet hole120may include a first hole section121and a second hole section122that are in sequential communication from bottom to top in an axial direction. Upper ends of the outer tube20and the inner tube30may be accommodated in the first hole section121. A cross-sectional area of the first hole section121is larger than a cross-sectional area of the second hole section122, to form a step surface1211at a connection between the first hole section121and the second hole section122.

The outer tube20and the inner tube30may be both in a circular tube shape, and may be coaxially disposed with the liquid storage shell11. It may be understood that, in other embodiments, the liquid storage shell11and/or the outer tube20and/or the inner tube30are not limited to a circular tube shape, and may be in another shape such as an elliptical tube shape or a square tube shape. The outer tube20is longitudinally disposed in the liquid storage shell11, and the annular liquid storage cavity110is formed between an outer wall surface of the outer tube20and an inner wall surface of the liquid storage shell11. The auxiliary airway23is formed between an inner wall surface of the outer tube20and an outer wall surface of the inner tube30. The vaporization assembly40may be accommodated in the inner tube30and coaxially disposed with the inner tube30. At least one first liquid inlet210and at least one second liquid inlet3120are respectively correspondingly opened in the outer tube20and the inner tube30, to communicate the liquid storage cavity110with the vaporization assembly40.

In some embodiments, the outer tube20may include a first outer tube section21and a second outer tube section22that are sequentially connected from bottom to top in an axial direction. An outer diameter and an inner diameter of the first outer tube section21are respectively larger than an outer diameter and an inner diameter of the second outer tube section22. The inner tube30may include a first inner tube section31and a second inner tube section32that are sequentially connected from bottom to top in an axial direction. An outer diameter and an inner diameter of the first inner tube section31are respectively larger than an outer diameter and an inner diameter of the second inner tube section32. The first inner tube section31is disposed in the first outer tube section21, the second inner tube section32is disposed in the second outer tube section22, and the vaporization assembly40may be accommodated in the first inner tube section31. The outer tube20and the inner tube30use a step structure, have larger sizes at lower ends to ensure that there is enough space inside to accommodate the vaporization assembly40, and have smaller sizes at upper ends to ensure that the liquid storage cavity110formed between the outer tube20and the liquid storage shell11has larger liquid storage space.

The outer diameter and the second inner tube section32may be smaller than the inner diameter of the second outer tube section22, so that an annular airflow channel320is formed between an outer wall surface of the second inner tube section32and an inner wall surface of the second outer tube section22. The annular airflow channel320may be configured to form a part of the auxiliary airway23. At least one air guide groove310may be recessed to be formed in an outer wall surface of the first inner tube section31. An upper end of the at least one air guide groove310is in communication with a lower end of the annular airflow channel320, to implement communication to form the auxiliary airway23. In this embodiment, there are two air guide grooves310. The two air guide grooves310are symmetrically disposed on two sides of the first inner tube section31in a radial direction, and each air guide groove310is a linear channel that extends upward from a lower end of the first inner tube section31to an upper end of the first inner tube section in a longitudinal direction. It may be understood that, in other embodiments, there may be one or more than two air guide grooves310, and the air guide groove310may be a nonlinear channel.

It may be understood that, in other embodiments, the auxiliary airway23is not limited to the foregoing formed structure. For example, the air guide groove310may keep extending upward from the lower end of the first inner tube section31to reach an upper end of the second inner tube section32. In this case, an outer diameter of the second inner tube section32may be equal to the inner diameter of the second outer tube section22. In another example, the air guide groove310may be formed in the inner wall surface of the outer tube20, or may be formed in both the inner wall surface of the outer tube20and the outer wall surface of the inner tube30.

At least one pressure relief hole220is opened in the outer tube20. The at least one pressure relief hole220communicates the liquid storage cavity110with the outside, and is configured to balance pressure inside the liquid storage cavity110, to ensure smooth liquid flowing. A position of the pressure relief hole220may be higher than an upper end surface of the liquid storage cavity110, so that leakage of the liquid substrate in the liquid storage cavity110through the pressure relief hole220can be reduced. In this embodiment, the pressure relief hole220is opened in the second outer tube section22and is in communication with the annular airflow channel320, and a plurality of pressure relief holes220may be provided and may be arranged at uniform intervals in a circumferential direction of the second outer tube section22.

Upper ends of the second inner tube section32and the second outer tube section22may extend into the first hole section121. An outer wall surface of the second outer tube section22fits a hole wall surface of the first hole section121in a sealed manner, to avoid leakage of the liquid substrate in the liquid storage cavity110. A gap is formed between an upper end surface of the second inner tube section32and the step surface1211, to form a communication channel1210that communicates the auxiliary airway23with the second hole section122. It may be understood that, in other embodiments, communication between the auxiliary airway23and the second hole section122may be implemented in another manner. For example, a communication opening that communicates the auxiliary airway23with the second hole section122may be opened in the upper end of the second inner tube section32or at a position near the upper end. In another example, the communication between the auxiliary airway23and the second hole section122may be implemented by setting an outer diameter of the upper end of the second inner tube section32to be smaller than a hole diameter of the second hole section122.

Further, in some embodiments, the first inner tube section31may include a first portion311and a second portion312connected to an upper end of the first portion311. The first portion311and the second portion312may have a same inner diameter. An outer diameter of the second portion312is the same as the inner diameter of the first outer tube section21, to implement fixing of the inner tube30in the outer tube20. The vaporization assembly40is accommodated in the second portion312. Correspondingly, the second liquid inlet3120is opened in a tube wall of the second portion312. In this embodiment, there are two second liquid inlets3120. The two second liquid inlets3120are symmetrically disposed on two sides of the second portion312in a radial direction. Correspondingly, there are also two first liquid inlets210. The two first liquid inlets210are respectively correspondingly provided and in communication with the two second liquid inlets3120.

An outer diameter of the first portion311is slightly smaller than the outer diameter of the second portion312, and is smaller than the inner diameter of the first outer tube section21. An outer wall surface of the first portion311is in clearance fit with an inner wall surface of the first outer tube section21, so that in one aspect, a force required to mount the inner tube30in the outer tube20can be reduced, and in another aspect, an annular vent gap3110may be formed between the outer wall surface of the first portion311and the inner wall surface of the first outer tube section21. The annular vent gap3110may be configured to form a part of the auxiliary airway23. It may be understood that, based on the structure of the first inner tube section31, the air guide groove310may be formed only in the second portion312of the first inner tube section31, provided that a lower end of the air guide groove310is in communication with an upper end of the annular vent gap3110. In other embodiments, the outer diameter of the first portion311may be equal to the outer diameter of the second portion312.

The vaporization assembly40may include a liquid absorbing body41and a heating body42in contact with the liquid absorbing body41. The liquid absorbing body41is configured to absorb the liquid substrate from the liquid storage cavity110and transfer the liquid substrate to the heating body42. The heating body42is configured to heat and vaporize the liquid substrate after being energized. In this embodiment, the liquid absorbing body41is a porous ceramic, and can absorb the liquid substrate from the liquid storage cavity110through infiltration and a capillary effect of micropores inside the liquid absorbing body. It may be understood that, in other embodiments, a material of the liquid absorbing body41is not limited to a porous ceramic material, and may be another porous material such as liquid absorbing cotton.

The liquid absorbing body41may be in a circular cylinder shape, and a vaporization cavity410is formed penetrating longitudinally inside the liquid absorbing body. The vaporization cavity410is in communication with the main airway33, and may be coaxially disposed with the main airway33. The heating body42may be disposed in a cavity wall surface of the vaporization cavity410. In other embodiments, the liquid absorbing body41may be in another shape such as a bowl shape or a sheet shape.

The heating body42may be a heating film, and may be formed on a blank of the liquid absorbing body41in a manner such as screen printing, printing or spraying, and may be sintered and formed together with the liquid absorbing body41. Alternatively, the heating body42may be a separately formed metal heating sheet or metal heating wire.

In some embodiments, the vaporization assembly40may further include a liquid guide body43. The liquid guide body43may be made of liquid guide cotton, may be in a circular cylinder shape, may be sleeved between an outer wall surface of the liquid absorbing body41and the inner wall surface of the inner tube30, and is configured to quickly and uniformly transfer the liquid substrate in the liquid storage cavity110to the liquid absorbing body41. It may be understood that, in other embodiments, a material of the liquid guide body43is not limited to liquid guide cotton, and may be another porous material such as porous ceramic.

The base13is at least partially disposed in an opening at the lower end of the liquid storage shell11, to block a lower end of the liquid storage cavity110in a sealed manner. At least one air inlet hole1331may be further opened in the base13. The at least one air inlet hole1331may be configured to form the air inlet channel130. A first mounting hole1320is concave downward to be formed in a top surface of the base13. Lower ends of the first inner tube section31and the first outer tube section21may be disposed in the first mounting hole1320. An outer wall surface of the lower end of the first outer tube section21may fit a hole wall surface of the first mounting hole1320in a sealed manner, to avoid leakage of the liquid substrate in the liquid storage cavity110.

A support surface1321is provided at a bottom of the first mounting hole1320. Lower end surfaces of the first inner tube section31and the first outer tube section21may abut against the support surface1321, to implement positioning of the first inner tube section31and the first outer tube section21in the first mounting hole1320. At least one vent opening313that communicates the auxiliary airway23with the air inlet channel130may be further formed in the first inner tube section31. In this embodiment, there are two vent openings313. The two vent openings313are symmetrically disposed on two sides of the first inner tube section31in the radial direction. Each vent opening313is concave upward to be formed in the lower end surface of the first inner tube section31. It may be understood that, in other embodiments, a quantity of the vent openings313is not limited to2. There may be one or more than two vent openings. In addition, the vent opening313may be disposed at another position in the first inner tube section31, for example, may be disposed close to the lower end of the first inner tube section31.

In some embodiments, the base13may include a base portion131, an insertion portion132extending upward from an upper end surface of the base portion131, and a butt portion133extending downward from a lower end surface of the base portion131. The insertion portion132may be in a circular cylinder shape and inserted in a lower portion of the liquid storage shell11. At least a part of a peripheral surface of the insertion portion132fits the inner wall surface of the liquid storage shell11in a sealed manner, to block the lower end of the liquid storage cavity110in a sealed manner. The base portion131may be in a circular cylinder shape. The upper end surface of the base portion131may abut against a lower end surface of the liquid storage shell11. An outer diameter of the base portion131may be consistent with an outer diameter of the lower end of the liquid storage shell11. The butt portion133may be in a circular cylinder shape. An outer diameter of the butt portion133may be smaller than the outer diameter of the base portion131. A threaded structure may be disposed on an outer wall surface of a lower portion of the butt portion133, and is configured to be threadedly connected to the power supply device200. The at least one air inlet hole1331may be disposed on a sidewall of an upper portion that is of the butt portion133and is provided with no threaded structure. In this embodiment, there are two air inlet holes1331. The two air inlet holes1331are symmetrically disposed on two sides of the butt portion133in a radial direction.

A second amounting hole1330in communication with a lower end of the first mounting hole1320may be concave upward to be formed in a bottom surface of the butt portion133. A hole diameter of the second amounting hole1330is smaller than a hole diameter of the first mounting hole1320, so that the annular support surface1321is formed at a connection between the second amounting hole1330and the first mounting hole1320.

An electrode post16may further be longitudinally disposed in the first mounting hole1320. The heating body42is electrically connected to the electrode post16, and is further electrically connected to the power supply device200by the electrode post16. In some embodiments, a material of the base13may be a conductive material such as metal. The electrode post16is disposed in the first mounting hole1320and is electrically insulated from the base13. Two electrodes of the heating body42are respectively connected to the electrode post16and the base13. Generally, an insulating sleeve15may be sleeved between an outer wall surface of the electrode post16and the hole wall surface of the first mounting hole1320, to ensure an insulating and sealed connection between the electrode post16and the base13. A material of the insulating sleeve15may be generally an insulating material such as silicone or plastic. It may be understood that, in other embodiments, the material of the base13may be an insulating material such as plastic.

The electrode post16may be a hollow cylinder or a solid column structure. In this embodiment, the electrode post16is a hollow cylinder. A through hole161is longitudinally formed in the electrode post. The through hole161may be used to form the air inlet channel130. It may be understood that when the through hole161is configured to allow air to enter, it may be not necessary to provide the air inlet hole1331in the base13.

An interval is provided between an upper end of the electrode post16and a lower end of the vaporization assembly40, to facilitate thermal insulation. The two electrodes of the heating body42may be connected to the electrode post16and the base13by a first electrode lead44and a second electrode lead45respectively. An upper end of the first electrode lead44is connected to the heating body42, and a lower end is clamped between the electrode post16and the insulating sleeve15to be connected to the electrode post16. An upper end of the second electrode lead45is connected to the heating body42, and a lower end is clamped between the base13and the insulating sleeve15to be connected to the base13.

In some embodiments, thermal insulation space1310may further be formed on the base13. The thermal insulation space1310can implement thermal insulation and heat preservation, to reduce heat transferred from the base13to outside, thereby reducing a heat loss. In this embodiment, the thermal insulation space1310is an annular groove, and is longitudinally recessed inward to be formed in a peripheral surface of the base portion131. Because the base portion131has the largest outer diameter, the thermal insulation space1310is provided on the base portion131, so that the thermal insulation space1310has a large size, to improve a thermal insulation effect, and heat transferred to the butt portion133can be further reduced, to further reduce heat transferred to the power supply device200.

It may be understood that, in other embodiments, the thermal insulation space1310may be in another shape. For example, the thermal insulation space1310may include a plurality of thermal insulation grooves provided at intervals. The plurality of thermal insulation grooves may be distributed at intervals in a circumferential direction and/or an axial direction of the base13. In some other embodiments, the thermal insulation space1310may be completely or partially formed in the insertion portion132or the butt portion133. In addition, a thermal insulation medium may be further filled in the thermal insulation space1310, to further improve the thermal insulation effect.

In some embodiments, the shell10may further include a fixing sleeve14. The fixing sleeve14is in a circular cylinder shape and is sleeved at the lower end of the liquid storage shell11and outside the base portion131, so that in one aspect, fixing between the liquid storage shell11and the base13can be enhanced, and in another aspect, the thermal insulation space1310can be sealed.

It may be understood that the foregoing technical features may be used in any combination without limitation.