Atomizer with anti-airflow reverse excitation control

Abstract

This application discloses an atomizer with anti-reverse airflow excitation control. The atomizer has a first airflow direction during inhalation and a second airflow direction during exhalation. The atomizer's housing contains a main flow channel and a secondary flow channel, both connected to the atmosphere. The main flow channel includes a first flow channel, a confluence chamber, and a second flow channel sequentially connected along the first airflow direction; the first and second flow channels are connected in the confluence chamber. A wall divides the confluence chamber into a first chamber and a second chamber connected on a first side, with the first and second flow channels connected in the first chamber. The secondary flow channel has a first end and a second end. The first end is on the second side away from the first side and connects to the second chamber, while the second end penetrates the housing and connects to the atmosphere. A sensor is disposed within the secondary flow channel and blocks the connection between the confluence chamber and the atmosphere. When airflow reverses through the atomizer, the airflow preferentially passes through the through-flow first flow channel.

Description

Technical Field

[0001] This utility model relates to the field of electronic atomization equipment technology, and in particular to an atomizer with anti-airflow reverse excitation control. Background Technology

[0002] In traditional technology, when a user inhales into the atomizer, a relative negative pressure is created inside the cavity, triggering the sensor to activate the atomization assembly. Simultaneously, the airflow generated during inhalation carries the aerosol produced during atomization with it. If air is blown in the opposite direction, aerosol or leakage may flow through the cavity to the trigger sensor, contaminating it and affecting its trigger sensitivity. Utility Model Content

[0003] The main purpose of this invention is to propose an atomizer with anti-airflow reverse excitation control, so as to reduce the problem that the airflow will trigger the sensor and excite the atomizer to work when the atomizer is back-blown.

[0004] To achieve the above objectives, this application provides an atomizer with anti-backflow excitation control, the atomizer having a first airflow direction during inhalation and a second airflow direction during exhalation, the atomizer comprising:

[0005] The outer shell has an internal configuration of a main flow channel and a tortuous secondary flow channel that are connected to the atmosphere. The main flow channel includes a first flow channel, a confluence chamber, and a second flow channel that are connected sequentially along the first airflow direction.

[0006] The first flow channel has a first inlet end and a first outlet end. The first inlet end forms an air inlet on the outer shell and communicates with the atmosphere, and the first outlet end communicates with the junction chamber.

[0007] The second flow channel has a second inlet end and a second outlet end. The second inlet end is located on the opposite side of the first outlet end, and the second outlet end forms an air outlet on the outer shell and communicates with the atmosphere.

[0008] A wall divides the junction room into a first chamber and a second chamber that communicate on a first side, with the first flow channel and the second flow channel communicating in the first chamber;

[0009] The secondary flow channel has a first end and a second end, and a channel extending in a tortuous manner at the first end and the second end. The first end communicates with the second chamber on the second side away from the first side, and the second end penetrates the outer shell and communicates with the atmosphere.

[0010] A sensor is installed in the channel and blocks the connection between the junction chamber and the atmosphere. The sensing surface of the sensor faces the side of the secondary flow channel closest to the second chamber.

[0011] In some embodiments, the wall is disposed on at least one of the first housing and the second housing to abut against the other and enclose the junction chamber.

[0012] In some embodiments, the wall has a gap away from the secondary flow channel, and one end of the secondary flow channel is connected to the confluence chamber through the gap.

[0013] In some embodiments, the wall has a remote portion away from at least one of the first flow channel and the second flow channel, the remote portion not contacting either the first housing or the second housing to form an air gap that connects the junction chamber and the secondary flow channel.

[0014] In some embodiments, the atomizer further includes a bracket, the first housing has a receiving cavity of the second housing disposed on the side near the confluence chamber, the bracket is installed in the first housing, the end face of the bracket near the receiving cavity is recessed to form a groove, the bottom of the groove is provided with a mounting hole, an air guide tube is disposed on the bracket, the first housing has an air inlet communicating with the outside atmosphere, the proximal end of the air guide tube is connected to the air inlet, the distal end of the air guide tube is inserted into the mounting hole, and the interior of the air guide tube is fixed to form the first flow channel.

[0015] In some embodiments, the gap between the outer wall of the distal portion of the air guide tube inserted into the mounting hole and the inner wall of the mounting hole gradually decreases from the side near the first outlet end to the other side.

[0016] In some embodiments, the inner diameter of the secondary flow channel is less than or equal to the inner diameter of the first flow channel.

[0017] Compared with the prior art, this utility model has obvious advantages and beneficial effects: Since the inlet end of the secondary flow channel is enclosed in the wall and the secondary flow channel is blocked by the sensor, when the airflow passes through the atomizer in the opposite direction, the airflow will preferentially pass through the unobstructed main flow channel in the confluence chamber, and the confluence chamber will form a negative pressure. The negative pressure can only affect the secondary flow channel for a short and negligible time, thereby reducing the probability of the sensor being accidentally triggered by backflush. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the atomizer in the embodiments provided in this application;

[0019] Figure 2 The schematic diagram of the air passage structure in the atomizer provided in the embodiments of this application is shown in which the black arrow indicates the first airflow direction and the white arrow indicates the second airflow direction.

[0020] Figure 3 for Figure 1 A schematic cross-sectional view of the AA-oriented atomizer structure;

[0021] Figure 4 This is a schematic diagram of the disassembled state of the first housing and the second housing of the atomizer in the embodiments provided in this application;

[0022] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of the atomizer;

[0023] Figure 6 An exploded view of the first shell in the embodiments provided in this application;

[0024] Figure 7 This is an exploded view of the structure of the support provided in the embodiments of this application;

[0025] Figure 8 for Figure 7 Schematic diagram of the structural cross section along the BB direction;

[0026] Figure 9 for Figure 8 A partially enlarged schematic diagram of the C-section structure.

[0027] Explanation of icon numbers:

[0028] 100-Atomizer;

[0029] 1-Outer shell; 10-First shell; 101-Receiving cavity; 102-Bracket; 1020-Mounting hole; 20-Second shell; 200-Upper groove;

[0030] 11-First flow channel; 110-Accumulation tank; 12-Merging chamber; 120-Wall; 1201-Gap; 121-Second chamber; 13-Second flow channel; 14-Sub-flow channel; 140-First end; 15-Sensor; 16-Circuit board. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] refer to Figure 1 As shown, this application provides an atomizer with anti-airflow reverse excitation control. The atomizer 100 has a first airflow direction during inhalation and a second airflow direction during exhalation. The atomizer 100 includes a housing 1 and a sensor 15 assembled in the housing 1. The housing 1 is provided with a main flow channel for airflow and a secondary flow channel 14 for assembling the sensor 15. The two ends of the main flow channel are respectively connected to the atmosphere. One end of the tortuous secondary flow channel 14 is connected to the main flow channel, and the other end of the secondary flow channel 14 is connected to the atmosphere. However, the sensor 15 blocks the connection between the main flow channel and the atmosphere in the secondary flow channel 14.

[0034] like Figures 1-3 As shown, the atomizer 100 includes a housing 1 having length and width directions. A main flow channel is disposed inside the housing 1, extending through the housing 1 and along a first airflow direction. The main flow channel includes a first flow channel 11, a confluence chamber 12, and a second flow channel 13 connected sequentially. In some embodiments, one end of the main flow channel communicates with the atmosphere at one end along the length of the housing 1 to form an air inlet, and the other end communicates with the atmosphere at the other end along the length to form an air outlet. The end with the air outlet is a mouthpiece for the atomizer 100 to draw air. Understandably, the flow direction of air exiting from the air inlet through the air inlet is the first airflow direction; conversely, the flow direction of air exiting from the air inlet through the air outlet is the second airflow direction.

[0035] For example, one end of the main channel forms an air inlet at the bottom of the housing 1, which is connected to the atmosphere, and the other end forms an air outlet at the top of the housing 1, which is connected to the atmosphere. The user of the atomizer 100 inhales the aerosol generated inside the atomizer 100 through the air outlet.

[0036] For example, one end of the main channel forms an air inlet on the side wall of the housing 1 and communicates with the atmosphere, and the other end forms an air outlet on the top of the housing 1 and communicates with the atmosphere.

[0037] Understandably, when a user inhales, the air inside the atomizer 100 is drawn out to form a negative pressure. Under the action of the negative pressure, the external air existing outside the outer shell 1 is drawn into the main channel through the air inlet. The external air is mixed with aerosol along the first airflow direction and then drawn out from the air outlet.

[0038] The main flow channel can be a single, continuous channel or composed of multiple interconnected channels. For example, this application illustrates a multi-segment main flow channel, which includes a first flow channel 11, a confluence chamber 12, and a second flow channel 13 connected sequentially along a first airflow direction. (Reference) Figure 2 As shown, a main flow channel and a secondary flow channel 14 are arranged within the outer casing 1 defined by the dashed line. The main flow channel includes a first flow channel 11, a confluence chamber 12, and a second flow channel 13 connected sequentially. However, the first flow channel 11 and the second flow channel 13 may be discontinuous, connected by a generally closed air chamber. The first flow channel 11 has a first inlet end and a first outlet end. The first inlet end forms an air inlet on the outer casing 1 and communicates with the atmosphere, while the first outlet end communicates with the confluence chamber 12. The second flow channel 13 has a second inlet end and a second outlet end. The second inlet end is located on the opposite side of the first outlet end, and the second outlet end forms an air outlet on the outer casing 1 and communicates with the atmosphere. It is worth noting that the first outlet end and the second inlet end may overlap on the projection plane or be offset from each other, and both can be connected through the confluence chamber 12.

[0039] This application does not emphasize whether the inner diameters of the first flow channel 11 and the second flow channel 13 are the same, because this does not affect the flow of air in the main flow channel along the first airflow direction or the second airflow direction.

[0040] Exemplarily, this application illustrates a housing 1 formed by connecting multiple housings. For example... Figures 4-5 As shown, the outer casing 1 includes a detachably connected first casing 10 and second casing 20. The first casing 10 is located below the second casing 20. A first flow channel 11 is disposed within the first casing 10, with a first inlet end located at the bottom of the first casing 10 and a first outlet end located at the top of the first casing 10. A second flow channel 13 is disposed within the second casing 20, with a second inlet end located at the bottom of the second casing 20 opposite to the first outlet end and a second outlet located at the top of the second casing 20. A junction chamber 12 can be disposed on at least one of the first casing 10 and the second casing 20; that is, when the first casing 10 and the second casing 20 are separated, the junction chamber 12 is always connected to either the first flow channel 11 or the second flow channel 13. When the first casing 10 and the second casing 20 are connected, the junction chamber 12 is connected to the other end of the flow channel.

[0041] The first housing 10 and the second housing 20 can be connected by a detachable method such as plug-in or threaded connection. For example... Figure 5 As shown, one end of the first housing 10 is provided with a receiving cavity 101 having an insertion port, the first outlet end of the main flow channel is disposed within the receiving cavity 101, and the first inlet end is disposed at the end away from the receiving cavity 101. The side of the second housing 20 having the second inlet end has an outer diameter adapted to the receiving cavity 101.

[0042] Understandably, the junction chamber 12 can be a cavity formed by protruding or recessed walls of the first housing 10 or the second housing 20. For example, at least one of the end faces of the connection end of the first housing 10 and the second housing 20 is recessed, with the first outlet end or the second inlet end located within the recess. When the first housing 10 is connected to the second housing 20, the end face of the connection end on the other housing covers the recess to form the junction chamber 12.

[0043] For example, refer to Figures 5 to 7 As shown, the top of the first housing 10 is recessed to form a groove, and the first outlet end is located at the bottom of the groove. The bottom of the second housing 20 is provided with a second inlet end. After the first housing 10 and the second housing 20 are connected, the bottom of the second housing 20 covers the groove, so that the groove is closed to form a confluence chamber 12 that connects the first flow channel 11 and the second flow channel 13, and the groove covers the second inlet end. It can be understood that the bottom of the second housing 20 and the groove wall are the walls 120 of the confluence chamber 12. In some other embodiments, when the first housing 10 and the second housing 20 each have a groove, the bottom of the second housing 20 is provided with an upper groove 200, and the top of the first housing 10 is provided with a lower groove. The upper groove 200 and the lower groove can cover each other to form the confluence chamber 12. The confluence chamber 12 will have a large volume (cross-sectional area). After the airflow, which is confined by the first flow channel 11 or the second flow channel 13, enters the confluence chamber 12, it will diffuse. The air pressure in the confluence chamber 12 is lower than the external atmospheric pressure, but slightly higher than the air pressure in the first flow channel 11 and the second flow channel 13. Furthermore, the increased volume of the confluence chamber 12 will reduce the airflow velocity, preventing the airflow from producing a hissing sound when passing through the connection between the first housing 10 and the second housing 20.

[0044] The junction chamber 12 connects the first flow channel 11, the second flow channel 13, and the secondary flow channel 14. The junction chamber 12 can be a single, independent chamber or multiple interconnected chambers. For example, see reference... Figure 6 , Figure 7As shown, wall 120 divides the confluence chamber 12 into a first chamber and a second chamber 121 that communicate on the first side. The first flow channel 11 and the second flow channel 13 communicate with the first chamber, and the secondary flow channel 14 communicates with the first chamber through the wall 120 between the second chamber 121 and the first chamber. The connection between the first chamber and the second chamber 121 is close to the inlet end of the second flow channel 13. When the atomizer 100 is in normal use, external air flows through the main flow channel along the first airflow direction, creating a negative pressure in the confluence chamber 12. The air pressure at the second inlet end is lower than that in the second chamber 121. Some air in the second chamber 121 and the secondary flow channel 14 near the second inlet end is replenished to the first chamber. The second chamber 121 and the secondary flow channel 14 generate negative pressure due to the lack of air, and the sensor 15 is triggered. Understandably, when the airflow enters the first chamber from the first outlet, it will diffuse and impact the wall 120 on the same side as the second inlet. Part of the airflow reflected by the wall 120 will enter the second chamber 121 near the second inlet, causing the air pressure in the second chamber 121 to rise. Since the airflow will form a negative pressure in the first chamber when it passes through the main flow channel, the air pressure in the first chamber will be lower than that in the second chamber 121. Some of the air in the second chamber 121 will be drawn out by the first chamber, and the air pressure in the second chamber 121 and the secondary flow channel 14 will decrease, triggering the detection of the sensor 15. Conversely, when air passes through the main channel along the second airflow direction, since the connection between the first chamber and the second chamber 121 is close to the second inlet end, the airflow entering the confluence chamber 12 will first impact the wall 120 away from the second inlet end. That is, the airflow will impact the wall 120 on the same side as the first outlet end. Some air in the second chamber 121 will be drawn out under the negative pressure of the first chamber. However, since the secondary channel 14 is far from the wall 120, that is, the secondary channel 14 is far from the connection between the second chamber 121 and the first chamber, and the secondary channel 14 cannot replenish air through the atmosphere, a static pressure zone is formed at the end of the secondary channel 14 near the second chamber 121, and the sensor 15 is not triggered.

[0045] The connection between the first chamber and the second chamber 121 can be a notch 1201 on the wall 120, or it can be a part of the wall 120 that does not contact the first housing 10 or the second housing 20.

[0046] The wall 120 can be connected from the plane where the first outlet end is located to the plane where the second inlet end is located, or it can extend from the plane where either end is located to the plane where the other end is located but do not contact each other. For example, the wall 120 extends from the plane where the first outlet end is located on the first housing 10 to the second inlet end on the second housing 20. When at least a portion of the wall 120 does not contact the second housing 20, the non-contact portion serves as an air gap for air to flow between the first chamber and the second chamber 121.

[0047] The secondary flow channel 14 is connected to the main flow channel, and the end of the secondary flow channel 14 away from the main flow channel is also connected to the atmosphere. The secondary flow channel 14 has a tortuous channel, with the first end 140 of the channel connected to the second chamber 121 at the junction away from the first chamber and the second chamber 121, and the second end of the channel penetrating the outer shell 1 and connecting to the atmosphere.

[0048] The secondary flow channel 14 protrudes from the bottom wall of the second chamber 121, but its flow channel opening is lower than the connection between the second chamber 121 and the first chamber. Understandably, the flow channel opening of the secondary flow channel 14 near the second chamber 121 is lower than the height of the wall 120.

[0049] In some embodiments, the inner diameter of the secondary flow channel 14 is less than or equal to the inner diameter of the first flow channel 11. Preferably, the inner diameter of the secondary flow channel 14 is smaller than the inner diameter of the first flow channel 11, which is expected to reduce the impact of the negative pressure of the reverse airflow on the secondary flow channel 14.

[0050] Sensor 15 is a barometric pressure sensor, which is disposed in the secondary flow channel 14 and blocks the communication between the junction chamber 12 and the atmosphere. The sensing surface of sensor 15 faces the side of the secondary flow channel 14 closest to the second chamber 121. For example, the secondary flow channel 14 is L-shaped, with its vertical section parallel to the wall 120 and its horizontal section perpendicular to the vertical section. Sensor 15 is mounted on the horizontal section.

[0051] In some embodiments, the atomizer 100 further includes a bracket 102 for securing the circuit board 16, the bracket 102 being mounted within the housing 1. For example, see... Figures 6-8 The first outer shell 1 has a receiving cavity 101 of the second outer shell 1 on one side. The bracket 102 is installed inside the first outer shell 10. The end face of the bracket 102 near the receiving cavity 101 is recessed to form a groove. The bottom of the groove is provided with a mounting hole 1020. The bracket 102 is provided with an air guide tube. The first outer shell 1 is provided with an air inlet that communicates with the outside atmosphere. The proximal end of the air guide tube is connected to the air inlet. The distal end of the air guide tube is inserted into the mounting hole 1020. The inside of the air guide tube is fixed to form a first flow channel 11.

[0052] In some embodiments, the gap between the distal portion of the vent tube inserted into the mounting hole 1020 and the inner wall of the mounting hole 1020 gradually narrows from the side near the first outlet end to the side away from the first outlet end. This gap forms a condensate trough 110, which can contain condensate flowing back along the main channel.

[0053] Because the inlet end (first end 140) of the secondary flow channel 14 is enclosed within the wall 120 and the secondary flow channel 14 is blocked by the sensor 15, the secondary flow channel 14 cannot supply air to the second chamber 121. When the airflow passes through the atomizer 100 in the reverse direction, the airflow will preferentially pass through the unobstructed main flow channel in the confluence chamber 12, and a negative pressure will be formed in the confluence chamber 12. The negative pressure can only affect the secondary flow channel 14 for a short and negligible period of time, thereby reducing the probability of the sensor 15 being falsely triggered by backflush.

[0054] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. An atomizer for preventing reverse airflow excitation control, the atomizer having a first airflow direction during inhalation and a second airflow direction during exhalation, characterized in that, The atomizer includes: The outer shell has an internal configuration of a main flow channel and a tortuous secondary flow channel that are connected to the atmosphere. The main flow channel includes a first flow channel, a confluence chamber, and a second flow channel that are connected sequentially along the first airflow direction. The first flow channel has a first inlet end and a first outlet end. The first inlet end forms an air inlet on the outer shell and communicates with the atmosphere, and the first outlet end communicates with the junction chamber. The second flow channel has a second inlet end and a second outlet end. The second inlet end is located on the opposite side of the first outlet end, and the second outlet end forms an air outlet on the outer shell and communicates with the atmosphere. A wall divides the junction room into a first chamber and a second chamber that communicate on a first side, with the first flow channel and the second flow channel communicating in the first chamber; The secondary flow channel has a first end and a second end, and a channel extending in a tortuous manner at the first end and the second end. The first end communicates with the second chamber on the second side away from the first side, and the second end penetrates the outer shell and communicates with the atmosphere. A sensor is installed in the channel and blocks the connection between the junction chamber and the atmosphere. The sensing surface of the sensor faces the side of the secondary flow channel closest to the second chamber.

2. The atomizer according to claim 1, characterized in that, The housing includes a first housing and a second housing that are detachably connected. The first flow channel is disposed in the first housing and the second flow channel is disposed in the second housing. When the first housing and the second housing are connected, the confluence chamber is formed between the first housing and the second housing.

3. The atomizer according to claim 2, characterized in that, The wall is disposed on at least one of the first housing and the second housing to abut against the other and enclose the junction chamber.

4. The atomizer according to claim 1 or 3, characterized in that, The wall has a gap away from the secondary flow channel, and one end of the secondary flow channel is connected to the confluence chamber through the gap.

5. The atomizer according to claim 2, characterized in that, The wall has a remote portion that is away from at least one of the first flow channel and the second flow channel, the remote portion not contacting either the first housing or the second housing to form an air gap that connects the junction chamber and the secondary flow channel.

6. The atomizer according to claim 2, characterized in that, The atomizer also includes a bracket, which is installed inside the first housing. One end of the bracket is recessed to form a groove, and the bottom of the groove is provided with a mounting hole. An air guide tube is disposed on the bracket. The first housing is provided with an air inlet that communicates with the outside atmosphere. The proximal end of the air guide tube is connected to the air inlet, and the distal end of the air guide tube is inserted into the mounting hole. The interior of the air guide tube is fixed to form the first flow channel.

7. The atomizer according to claim 6, characterized in that, The gap between the outer wall of the distal portion of the air guide tube inserted into the mounting hole and the inner wall of the mounting hole gradually decreases from the side closer to the first outlet end to the other side.

8. The atomizer according to claim 1, characterized in that, The inner diameter of the secondary flow channel is less than or equal to the inner diameter of the first flow channel.

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