Atomization Apparatus

Description

TECHNICAL FIELD

The present application relates to the technical field of atomization apparatuses, and in particular, to an atomization apparatus.

BACKGROUND

Starting of an atomization apparatus is achieved by making an airflow sensor sense an air pressure in an airflow channel, and an arrangement of the airflow channel occupies a large space inside the atomization apparatus, which affects a structural optimization of the atomization apparatus.

In addition, the current airflow channel is poor in air tightness, so that a sensing sensitivity of the airflow sensor is poor, which affects working performance of the atomization apparatus.

SUMMARY

In view of this, the present application provides an atomization apparatus, and a structure of the atomization apparatus is capable of being optimized and working performance of the atomization apparatus is capable of being improved by reducing an internal space of the atomization apparatus occupied by an airflow channel.

To achieve the above purposes, the present application provides a following technical solution.

An atomization apparatus, which includes:

• • a housing;
  • an air inlet channel, disposed in the housing and communicated with an exterior of the housing;
  • a battery bracket, disposed in the housing and provided with an accommodating slot;
  • a starting pipeline, disposed in the accommodating slot, one end of the starting pipeline being an opening end communicated with the air inlet channel; and
  • an airflow sensor, disposed in the housing and capable of sensing an air pressure in the starting pipeline.

Optionally, in the above atomization apparatus, the starting pipeline is an integrally formed hose.

Optionally, in the above atomization apparatus, the atomization apparatus is rod-shaped, one end of the atomization apparatus is a suction nozzle end and the other end of the atomization apparatus is a charging end; and a circuit board of the atomization apparatus is disposed, close to the charging end, in the housing, and the airflow sensor is disposed on the circuit board and electrically connected to the circuit board.

Optionally, in the above atomization apparatus, the airflow sensor is covered with a sealing cover, the sealing cover is connected to the circuit board in a sealing manner to seal the airflow sensor in an enclosed space, and the other end of the starting pipeline is in communication with the enclosed space.

Optionally, in the above atomization apparatus, an atomization chamber of the atomization apparatus is disposed, close to the suction nozzle end, in the housing, the battery bracket and a battery mounted on the battery bracket are located between the atomization chamber and the circuit board, and the accommodating slot and the starting pipeline located in the accommodating slot extend from one end of the battery bracket to the other end of the battery bracket.

Optionally, in the above atomization apparatus, the air inlet channel is communicated with the atomization chamber on a side, away from the suction nozzle end, of the atomization chamber, and the opening end is disposed close to a communicating part of the air inlet channel and the atomization chamber.

Optionally, the above atomization apparatus further includes an isolation cover provided between an inlet of the atomization chamber and the opening end, a gas in the air inlet channel and the starting pipeline is capable of passing through the isolation cover to enter the atomization chamber, and a liquid in the atomization chamber is not allowed to pass through the isolation cover to enter the air inlet channel and the starting pipeline.

Optionally, the isolation cover is provided with a through hole, and a diameter of the through hole is 0.4 mm.

Optionally, the above atomization apparatus further includes an isolation cover provided between an inlet of the atomization chamber and the opening end, the isolation cover is provided with a through hole, and projections of the through hole and the opening end on a plane where the isolation cover is located do not overlap.

Optionally, the isolation cover includes a first portion and a second portion, the second portion is closer to the opening end than the first portion, the through hole is disposed in the first portion, the second portion includes a baffle, and the baffle extends in a direction perpendicular to a plane where the isolation cover is located and shields the opening end.

Optionally, a material of the isolation cover is plastic or metal.

Optionally, in the above atomization apparatus, the battery bracket is a pipe-shaped structure or a slot-shaped structure, a battery of the atomization apparatus, the circuit board and the airflow sensor are all accommodated in a pipe cavity or a slot cavity of the battery bracket, and the accommodating slot is a strip-shaped hole penetrating through a pipe wall or a slot wall.

Optionally, in the above atomization apparatus, the battery bracket is provided with an accommodating hole in communication with the strip-shaped hole, and the sealing cover is located in the accommodating hole.

According to an atomization apparatus provided in the present application, an accommodating slot is provided on a battery bracket, and a starting pipeline for communicating an airflow sensor to enable the airflow sensor to sense an air pressure is provided in the accommodating slot, so that the starting pipeline is capable of making use of a space originally occupied by the battery bracket, avoiding extra occupation of an internal space of a housing of the atomization apparatus. Therefore, the atomization apparatus has more remaining space for arranging other components, a layout of components of the atomization apparatus may be more reasonable, and a structure of the atomization apparatus is optimized. Meanwhile, a separate and sealed starting pipeline is provided in the housing with respect to the air inlet channel, which is specifically used for the airflow sensor to sense the air pressure, so that a sensing sensitivity of the atomization apparatus may be improved, and working performance of the atomization apparatus is improved.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate embodiments of the present application or technical solutions in a related art, the accompanying drawings required for the description of the embodiments or the related art are briefly described below. Apparently, the accompanying drawings in following description are merely embodiments of the present application, and for a person of ordinary skill in the art, other drawings may be obtained according to the accompanying drawings without any inventive effort.

FIG. 1 is a schematic structural diagram of an atomization apparatus according to an embodiment of the present application.

FIG. 2 is an exploded view of a housing, a battery, a circuit board, an airflow sensor, a battery bracket, a starting pipeline, and a sealing cover.

FIG. 3 is an assembly diagram of a structure shown in FIG. 2.

FIG. 4 is a cross-sectional view of an atomization apparatus.

FIG. 5 is a partial enlarged view of the FIG. 4.

FIG. 6 is a partial schematic diagram of an atomization apparatus according to another embodiment of the present application.

As shown in FIGS. 1 to 5:

1—housing, 2—air inlet channel, 3—battery bracket, 4—accommodating slot, 5—starting pipeline, 6—airflow sensor, 7—suction nozzle end, 8—charging end, 9—circuit board, 10—atomization chamber, 11—atomizer, 12—sealing cover, 13—battery, 14/14′—isolation cover, 15—accommodating hole, 16—opening end, 17—connecting hole, 141/141′—through hole, 142—first portion, 143—second portion, and 144—baffle.

DETAILED DESCRIPTIONS OF THE EMBODIMENTS

The present application provides an atomization apparatus, an internal space of the atomization apparatus occupied by an airflow channel is reduced, so that a structure of the atomization apparatus is capable of being optimized, and working performance of the atomization apparatus is capable of being improved.

The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are only a part, but not all embodiments of the present application. All other embodiments that may be obtained by those of ordinary skill in the art based on the embodiments in the present application without inventive efforts fall into the protection scope of the present application.

As shown in FIGS. 1 to 5, an embodiment of the present application provides an atomization apparatus, which involves improved components mainly including a housing 1, an air inlet channel 2, a battery bracket 3, and a starting pipeline 5. At the same time, the atomization apparatus further includes components such as a suction nozzle assembly, an atomization chamber 10, an atomizer 11, a battery 13, and a circuit board 9, in order to ensure normal operation of the atomization apparatus. The housing 1 is an appearance member of the atomization apparatus, the housing 1 has an internal cavity, which is a mounting space of other components of the atomization apparatus, and the housing 1 may be, for example, a pipe-shaped structure shown in FIG. 2 and FIG. 4. The air inlet channel 2 is a channel for external air to enter an interior of the atomization apparatus, which is located in the housing 1 and communicated with an exterior of the housing 1, so that a user may suck external air into the atomization apparatus, and the air inlet channel 2 may be formed by arranging a pipeline inside the housing 1 or by using a gap between components. The battery bracket 3 is a component provided in the housing 1 for mounting and supporting the battery 13, and is improved by providing an accommodating slot 4. The starting pipeline 5 is a channel provided in the housing 1, which is specifically in communication with an airflow sensor 6, and is formed by specifically providing a pipe inside the housing 1. During a special arrangement of the starting pipeline 5, the starting pipeline 5 is provided in the accommodating slot 4 of the battery bracket 3, that is, the starting pipeline 5 is accommodated by the accommodating slot 4, and one end of the starting pipeline 5 is an opening end 16 having an opening. The opening end 16 is in communication with the air inlet channel 2, and the other end of the starting pipeline 5 is sealed by a sealing cover 12 covering the airflow sensor 6, so that the starting pipeline 5 becomes a single-opening channel with one end communicated with the air inlet channel 2 and the other end communicated with the airflow sensor 6 but sealed. The airflow sensor 6 is also provided within the housing 1, and is configured to sense an air pressure change in the starting pipeline 5.

When the user sucks the atomization apparatus, external air enters the air inlet channel 2 and flows toward the atomization chamber 10. In this process, since the starting pipeline 5 is in communication with the air inlet channel 2, a gas in the starting pipeline 5 is also sucked, so that a negative pressure is formed in the starting pipeline 5. The airflow sensor 6 in communication with the starting pipeline 5 starts a heating circuit after sensing the negative pressure, so that the atomizer 11 starts to work to make the user to suck out an aerosol.

According to the atomization apparatus with the above-described structure, on one hand, the accommodating slot 4 is provided on the battery bracket 3, and the starting pipeline 5 for enabling the airflow sensor 6 to sense the air pressure is provided in the accommodating slot 4, so that the starting pipeline 5 is capable of occupying a space originally occupied by the battery bracket 3, and the starting pipeline 5 no longer occupies an internal space of the housing 1 alone, thereby avoiding space waste, enabling the atomization apparatus to have a larger remaining space to more reasonably arrange other components, and enabling a structure of the atomization apparatus to be optimized. On the other hand, a separate and sealed starting pipeline 5 is provided in the housing 1 to be specifically used for the airflow sensor 6 to sense the air pressure, so that the air tightness is improved to make the sensing of the airflow sensor 6 more sensitive, and the working performance of the atomization apparatus is also improved.

In a preferred structure, the starting pipeline 5 is an integrally formed hose. The starting pipeline 5 is provided in an integrally formed structure and made of a soft material, because a component having a better air tightness may be obtained by integrally molding the material, so that the airflow sensor 6 may be started more sensitively. The integrated molding is, for example, integrated injection molding, blow molding, cutting molding, etc., the material may be rubber, soft plastic, or the like, and the soft plastic may be, for example, Teflon, etc. In order to better match the battery bracket 3 and reduce a space occupation in the housing as much as possible, it is preferable that an inner diameter of the hose is 0.6 mm to 1.2 mm. Compared with a pipeline formed by splicing or connecting different material components in a related art, the starting pipeline 5 of the above structure is capable of avoiding a situation that external air enters the pipeline and a negative pressure cannot be formed due to poor sealing performance in a suction process, so that the airflow sensor 6 may be started efficiently, and the working performance of the atomization apparatus is more prominent.

As shown in FIG. 1 and FIG. 4, the atomization apparatus provided in the present application is rod-shaped, and one end of the atomization apparatus is provided with a suction nozzle assembly to form a suction nozzle end 7, and the other end of the atomization apparatus is provided with a charging component to form a charging end 8.

Further, as shown in FIG. 2 and FIG. 4, a circuit board 9 of the atomization apparatus is disposed close to the charging end 8 in the housing 1, and the airflow sensor 6 is disposed on the circuit board 9 and electrically connected to the circuit board 9. In this structure, the circuit board 9 is a control component of the atomization apparatus, which is electrically connected to the airflow sensor 6, a charging component, a heating assembly in the atomization chamber 10, a button provided on the housing 1, and the like, to control or respond thereto. Moreover, since a part, close to the charging end 8, of the housing 1, has a relatively large internal space, and the circuit board 9 needs to be closely matched with the charging component, the circuit board 9 is disposed at a position, close to the charging end 8, of the entire atomization apparatus. In a related art, the airflow sensor 6 is disposed at a position close to an atomizer 11, that is, the airflow sensor 6 is disposed close to the air inlet channel 2, and away from the charging end 8. In order to ensure the normal operation of the airflow sensor 6, it is necessary to provide the airflow sensor 6 with a single circuit board in this position to cooperate with the airflow sensor 6, so that the housing 1 has two circuit boards inside, thereby a large amount of the internal space of the housing 1 is occupied. Based on this, the present application improves the above structure, mainly changing a setting position of the airflow sensor 6, and the airflow sensor 6 is no longer provided close to the atomizer 11. Since the part, close to the charging end 8, of the housing 1, has a relatively large internal space, that is, has a condition of setting the airflow sensor 6, the airflow sensor 6 is provided on the circuit board 9 close to the charging end 8, and the airflow sensor 6 is electrically connected to the circuit board 9 to enable the airflow sensor 6 and the circuit board 9 to cooperate with each other, so that one circuit board may be reduced, thereby reducing occupation of the internal space of the housing 1, avoiding space waste and enabling the atomization apparatus to have a larger remaining space to reasonably arrange other components. At the same time, by arranging the airflow sensor 6 on the circuit board 9 located at the charging end 8, two circuit board functions may be integrated, that is, one circuit board is saved, so that the structure of the atomization apparatus is simplified and a cost is saved on the basis of saving space.

As shown in FIGS. 2 to 4, the airflow sensor 6 is covered with a sealing cover 12, the sealing cover 12 is connected to the circuit board 9 in a sealing manner to seal the airflow sensor 6 in an enclosed space, and the other end of the starting pipeline 5 is in communication with the enclosed space. It can be seen from the foregoing content that the starting pipeline 5 needs to be a single-opening channel, so that other parts of the starting pipeline 5 need to be kept sealed on the basis of the starting pipeline 5 having an opening end 16, and therefore, in order to achieve that the starting pipeline 5 is in communication with the airflow sensor 6 and is in a sealing state relative to outside, the sealing cover 12 is preferably provided to cover the airflow sensor 6, and the sealing cover 12 is connected to the circuit board 9 in a sealing manner to seal the airflow sensor 6. At the same time, the sealing cover 12 is provided with a connecting hole 17, and the other end of the starting pipeline 5 is connected to the connecting hole 17 in a sealing manner (that is, the starting pipeline 5 is open at both ends before assembling, and the other end of the starting pipeline 5 is sealed by connecting the starting pipeline 5 to the sealing cover 12 in a sealing manner during an assembling process), so that the starting pipeline 5 only has one opening at one end and is in communication with the enclosed space enclosed by the sealing cover 12 and the circuit board 9, thereby forming a negative pressure in the starting pipeline 5 and the enclosed space during suction of a user. A sealing connection manner between the sealing cover 12 and the circuit board 9 may be a bonding manner, and a sealing connection between the sealing cover 12 and the starting pipeline 5 may be fitting over in an interference-fit manner. In addition, the starting pipeline 5 and the sealing cover 12 may be provided in an integrated structure, that is, the starting pipeline 5 and the sealing cover 12 may be integrally formed, so that a fitting-over operation between the starting pipeline 5 and the sealing cover 12 is avoided, thereby further improving air tightness and simplifying assembling steps.

As shown in FIG. 2 and FIG. 4, an atomization chamber 10 of the atomization apparatus is disposed, close to the suction nozzle end 7, in the housing 1, the battery bracket 3 and a battery 13 mounted on the battery bracket 3 are located between the atomization chamber 10 and the circuit board 9, and the accommodating slot 4 and the starting pipeline 5 located in the accommodating slot 4 extend from one end of the battery bracket 3 to the other end of the battery bracket 3. In this structure, in a direction from the suction nozzle end 7 to the charging end 8, the atomization chamber 10, the battery bracket 3, the battery 13 and the circuit board 9 are arranged in sequence. As shown in FIG. 4 and FIG. 5, the battery bracket 3 and the battery 13 are located between the atomization chamber 10 and the circuit board 9. Since the airflow sensor 6 is arranged on the circuit board 9 and the opening end 16 of the starting pipeline 5 needs to be in communication with the air inlet channel 2 communicating with the atomization chamber 10, the starting pipeline 5 needs to cross the battery bracket 3. Therefore, when the accommodating slot 4 is arranged, the accommodating slot 4 needs to extend from one end of the battery bracket 3 to the other end of the battery bracket 3, so that the starting pipeline 5 located in the accommodating slot 4 may extend from one side, close to the circuit board 9, of the battery bracket 3 to the other side, close to the atomization chamber 10, of the battery bracket 3.

Further, as shown in FIG. 4 and FIG. 5, in the present application, the air inlet channel 2 is communicated with the atomization chamber 10 on a side, away from the suction nozzle end 7, of the atomization chamber 10, and the opening end 16 is disposed close to a communicating part of the air inlet channel 2 and the atomization chamber 10. The air inlet channel 2 is communicated with the atomization chamber 10 on the side, away from the suction nozzle end 7, of the atomization chamber 10, that is, the air inlet channel 2 is disposed between the atomization chamber 10 and the battery bracket 3, so that a structure distribution is more reasonable, space utilization is more sufficient, and the air inlet channel 2 may be more conveniently communicated with the starting pipeline 5 extending from the charging end 8. On basis of the above, it is also preferable that a setting position of the opening end 16 of the starting pipeline 5 is a position close to the communicating part of the air inlet channel 2 and the atomization chamber 10. A reason for this setting is that the position is a position with the largest air flow pressure and the fastest flow rate in the whole air flow path. The opening end 16 is located at the position, so that a negative pressure is more easily formed in the starting pipeline 5 and the enclosed space when the user is sucking, thereby making the airflow sensor 6 more sensitive to sense. Of course, the opening end 16 may be provided at other parts of the air inlet channel 2, but the closer the opening end 16 is to the communicating part, the more sensitive the sensing of the airflow sensor 6 is.

Specifically, as shown in FIG. 4 and FIG. 5, an isolation cover 14 is provided between an inlet of the atomization chamber 10 and the opening end 16, a gas in the air inlet channel 2 and the starting pipeline 5 is capable of passing through the isolation cover 14 to enter the atomization chamber10, and a liquid in the atomization chamber 10 is not allowed to pass through the isolation cover 14 to enter the air inlet channel 2 and the starting pipeline 5. The isolation cover 14 is provided between the inlet of the atomization chamber 10 and the opening end 16 of the starting pipeline 5, so that condensate generated in the atomization chamber 10 cannot enter the starting pipeline 5 through isolation of the isolation cover 14, thereby avoiding that the airflow sensor 6 is unable to be started because the starting pipeline 5 is blocked by the condensate. At the same time, the isolation cover 14 is provided with dense through holes 141, and a diameter of each through hole 141 is about 0.4 mm, which allows external air to enter the atomization chamber 10 under a suction action, thereby ensuring that the airflow sensor 6 is capable of being normally started. The condensate may not pass through the through hole due to existence of capillary force, and even if a small amount of the condensate passes through the through hole, the condensate may be brought out with the suction and is wrapped by smoke to be sucked into user's mouth, so that the isolation cover 14 has a function of allowing the air flow to pass through without allowing liquid to pass through, thereby improving working reliability of the atomization apparatus. Specifically, a material of the isolation cover 14 may be plastic or metal or the like.

In another embodiment, as shown in FIG. 6, an isolation cover 14′ is provided between an inlet of the atomization chamber 10 and the opening end 16, the isolation cover 14′ is provided with a through hole 141′, and projections of the through hole 141′ and the opening end 16 on a plane where the isolation cover 14′ is located do not overlap. In this way, a gas in the air inlet channel 2 and the starting pipeline 5 is capable of passing through the through hole 141′ of the isolation cover 14′ to enter the atomization chamber 10. Moreover, since a setting position of the through hole 141′ avoids the opening end 16, it may be avoided that a liquid in the atomization chamber 10 enters the starting pipeline 5 through the isolation cover 14′ to avoid that the starting pipeline 5 is blocked by the condensate.

Further, the isolation cover 14′ includes a first portion 142 and a second portion 143, and the second portion 143 is closer to the opening end 16 than the first portion 142. The through hole 141′ is disposed in the first portion 142. The second portion 143 includes a baffle 144, and the baffle 144 extends in a direction perpendicular to a plane where the isolation cover 14′ is located and shields the opening end 16. In this way, it may be further avoided that the liquid in the atomization chamber 10 enters the starting pipeline 5 through the isolation cover 14′ to avoid that the starting pipeline 5 is blocked by the condensate.

It should be understood that in some embodiments, the number of through holes 141′ may be one or more. In addition, a size of the through hole 141′ may be set according to actual needs, so that the liquid in the atomization chamber 10 may not pass through the isolation cover 14′ into the air inlet channel 2. For example, a diameter of the through hole 141′ is about 0.4 mm.

In the present application, as shown in FIG. 2 and FIG. 3, it is preferable that the battery bracket 3 is a pipe-shaped structure or a slot-shaped structure, a battery 13 of the atomization apparatus, the circuit board 9 and the airflow sensor 6 are all accommodated in a pipe cavity or a slot cavity of the battery bracket 3, and the accommodating slot 4 is a strip-shaped hole penetrating through a pipe wall or a slot wall. When the battery bracket 3 is a pipe-shaped structure, the battery bracket 3 is capable of forming a comprehensive protection in an entire circumferential direction, and when the battery bracket 3 is a slot-shaped structure, the battery bracket 3 is capable of forming a large degree of protection in the circumferential direction, thereby forming an accommodating for the battery 13, the circuit board 9 and the airflow sensor 6, so that the battery 13, the circuit board 9 and the airflow sensor 6 may be more safely and reliably mounted in the housing 1. In addition, the battery bracket 3 of this structure may also provide a mounting base for the atomization chamber 10, a atomizer 11, and/or the isolation cover 14, that is, the atomization chamber 10, the atomizer 11, and/or the isolation cover 14 may also be mounted in the housing 1 in a manner of being disposed on the battery bracket 3.

On the basis that the battery bracket 3 is a pipe-shaped structure or a slot-shaped structure, since the battery 13, the circuit board 9 and the airflow sensor 6 need to be accommodated and the internal space of the housing 1 is limited, a wall thickness of the battery bracket 3 needs to be set to be small. Therefore, in order to normally accommodate the starting pipeline 5, the accommodating slot 4 penetrates through the battery bracket 3 in a wall thickness direction, that is, the accommodating slot 4 is a through hole, and since the starting pipeline 5 needs to extend from one end of the battery bracket 3 to the other end, the through hole needs to be a strip-shaped hole. In addition, when the battery bracket 3 is another structure having a sufficient wall thickness, for example, a support plate or a support block, a structure for accommodating the starting pipeline 5 may be a slot-shaped structure that does not penetrate through the support plate or the support block, that is, the accommodating slot 4.

As shown in FIG. 2 and FIG. 3, the battery bracket 3 is provided with an accommodating hole 15 in communication with the strip-shaped hole, and the sealing cover 12 is located in the accommodating hole 15. Since the airflow sensor 6 is covered with the sealing cover 12 and the sealing cover 12 needs to enclose an enclosed space, the sealing cover 12 has a larger volume relative to the airflow sensor 6. In order to ensure the normal accommodation of the airflow sensor 6 and the circuit board 9 by the battery bracket 3, the accommodating hole 15 is disposed in the battery bracket 3 for accommodating or avoiding the sealing cover 12 with a larger volume, and in order not to affect the normal connection between the sealing cover 12 and the starting pipeline 5, the accommodating hole 15 is communicated with the strip-shaped hole, so that the starting pipeline 5 may extend directly from the strip-shaped hole into the accommodating hole 15 to ensure that the starting pipeline 5 can be well sealed with the sealing cover 12.

Basic principles of the present application are described above in conjunction with specific embodiments, but it should be noted that merits, advantages, effects, and the like mentioned in the present application are merely illustrative and not restrictive, and these merits, advantages, effects, and the like may not be considered to be necessary for the various embodiments of the present application. In addition, the specific details disclosed above are merely for a purpose of illustration and convenience of understanding rather than restrictions, and the above details are not intended to limit the present application to be implemented by using the specific details described above.

Block diagrams of components, apparatuses, devices, and systems involved in the present application are merely illustrative examples and are not intended to require or imply that connections, arrangements, and configurations must be made in manners shown in the block diagrams. As those skilled in the art may recognize, these components, apparatuses, devices, and systems may be connected, arranged, and configured in any manner. Words such as “including”, “containing”, “having” and the like are open-ended vocabularies, which mean “including, but not limited to”, and they may be used interchangeably therewith. The terms “or” and “and” as used herein refer to the term “and/or”, and they may be used interchangeably therewith, unless the context clearly indicates otherwise. The term “such as” as used herein refers to a phrase “such as, but not limited to”, and they may be used interchangeably therewith.

It should also be noted that in the apparatus, devices and methods of the present application, each component or each step may be decomposed and/or recombined. Such decomposition and/or recombination should be regarded as an equivalent scheme of the present application.

The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects are readily apparent to those skilled in the art, and generic principles defined herein may be applied to other aspects without departing from the scope of the present application. Accordingly, the present application is not intended to be limited to the aspects illustrated herein, but is to be the widest scope consistent with the principles and novel features disclosed herein.

It should be understood that qualifiers “first”, “second”, “third”, “fourth”, “fifth” and “sixth” used in the description of the embodiments of the present application are only used for illustrating the technical solutions more clearly, and are not intended to limit the protection scope of the present application.

The foregoing description has been presented for purposes of illustration and description. Moreover, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although various exemplary aspects and embodiments have been discussed above, those skilled in the art may recognize certain variations, modifications, changes, additions, and sub-combinations thereof.