U.S. patent application number 16/903348 was filed with the patent office on 2021-04-22 for electronic cigarette with breathing sensing function.
The applicant listed for this patent is Cheng Uei Precision Industry Co., LTD.. Invention is credited to YI-PING LIAO.
Application Number | 20210112876 16/903348 |
Document ID | / |
Family ID | 1000004913051 |
Filed Date | 2021-04-22 |
United States Patent
Application |
20210112876 |
Kind Code |
A1 |
LIAO; YI-PING |
April 22, 2021 |
ELECTRONIC CIGARETTE WITH BREATHING SENSING FUNCTION
Abstract
An electronic cigarette, includes a mouthpiece section, the
mouthpiece section has a suction nozzle; a rod section; the rod
section has a first cylinder; a power source received in the first
cylinder; an airflow sensor received in the first cylinder and
arranged along a longitudinal direction of the power source; an
atomizing section has a second cylinder, a smoke duct received in
the second cylinder and being passed through the second cylinder;
an atomizer installed at the smoke duct, the atomizer has a
waterproof membrane, the waterproof membrane sealed a bottom
opening of the smoke duct. The waterproof membrane, the suction
nozzle, the smoke duct and the first cylinder are connected to each
other to form an airflow channel. The waterproof membrane has a
material which prevents the smoke oil from leaking through the
waterproof membrane, and allows an airflow of the airflow channel
to pass through the waterproof membrane.
Inventors: |
LIAO; YI-PING; (New Taipei
City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Cheng Uei Precision Industry Co., LTD. |
New Taipei City |
|
TW |
|
|
Family ID: |
1000004913051 |
Appl. No.: |
16/903348 |
Filed: |
June 16, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A24F 40/42 20200101;
A24F 40/51 20200101; A24F 40/46 20200101 |
International
Class: |
A24F 40/51 20060101
A24F040/51; A24F 40/42 20060101 A24F040/42; A24F 40/46 20060101
A24F040/46 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 22, 2019 |
CN |
201921782204.X |
Claims
1. An electronic cigarette, comprising: a mouthpiece section having
a suction nozzle; a rod section having a first cylinder; a power
source received in the first cylinder; an airflow sensor received
in the first cylinder and arranged along a longitudinal direction
of the power source; an atomizing section having a second cylinder,
one end of the second cylinder connected to the mouthpiece section,
the other end of the second cylinder connected to the first
cylinder, the second cylinder containing smoke oil; a smoke duct
received in the second cylinder and being passed through the second
cylinder; and an atomizer installed at a bottom of the smoke duct,
the smoke duct having an oil inlet communicating with the atomizer,
a bottom of the atomizer having a waterproof membrane, the
waterproof membrane sealed a bottom opening of the smoke duct, the
waterproof member, the suction nozzle, the smoke duct and the first
cylinder being connected to each other to form an airflow channel,
the waterproof membrane having a material which prevents the smoke
oil from leaking through the waterproof membrane, and allows an
airflow of the airflow channel to pass through the waterproof
membrane.
2. The electronic cigarette as claimed in claim 1, wherein the
waterproof membrane is clamped between two rubber rings which are
arranged in the smoke duct.
3. The electronic cigarette as claimed in claim 1, wherein the
atomizer comprises a cylindrical heater, a heating wire in a cavity
of the heater, and an oil-absorbing cotton covering an outer wall
of the heater, the oil inlet has a plurality of oil inlet holes
opened on a side wall of the smoke duct.
4. The electronic cigarette as claimed in claim 1, wherein a bottom
of the second cylinder has a connector head with a T-shaped
longitudinal section and a ring structure, the second cylinder is
detachably connected to the first cylinder through the connector
head.
5. The electronic cigarette as claimed in claim 4, wherein the
smoke duct extends downward to an outside of the second cylinder, a
top of the connector head is sleeved on an outer wall of the smoke
duct, a bottom of the connector head extends into the first
cylinder and is engaged with the first cylinder.
6. The electronic cigarette as claimed in claim 5, wherein a sleeve
is inserted into a top opening of the first cylinder, a cavity of
the connector head receives a hollow first conductive pillar, a
cavity of the sleeve receives a hollow second conductive pillar,
when the connector head and the sleeve are connected, the first
conductive pillar and the second conductive pillar abut each other,
the atomizer comprises a cylindrical heater, a heating wire in a
cavity of the heater, a positive end of the heating wire is
electrically connected to the first conductive pillar, and a
positive end of the power source is electrically connected to the
second conductive pillar through the airflow sensor, the sleeve
engages with the connector head.
7. The electronic cigarette as claimed in claim 6, wherein an inner
wall of the connector head has a ring-shaped first flange, an inner
wall of the sleeve has a ring-shaped second flange, the first
conductive pillar and the second conductive pillar are engaged with
the first flange and the second flange respectively.
8. The electronic cigarette as claimed in claim 7, wherein both the
connector head and the sleeve are formed of metal material, the
first insulating sleeve is sleeved on a first conductive pillar, a
second insulating sleeve is sleeved on the second conductive
pillar, the first insulating sleeve defines a first slot for
connecting to the first flange, and the second insulating sleeve
defines a second slot for connecting to the second flange, the
connector head separates from the hollow first conductive pillar by
the first insulating sleeve, the sleeve separates from the hollow
second conductive pillar by the second insulating sleeve.
9. The electronic cigarette as claimed in claim 6, wherein a top of
the sleeve protrudes outward to form an annular flange, a top of
the first cylinder abuts on the annular flange, outer surfaces of
the annular flange and the sleeve define at least one air inlet
communicating with an inside of the first cylinder.
10. The electronic cigarette as claimed in claim 1, wherein the
mouthpiece section comprises a sealing joint having a hollow
structure and the suction nozzle plugged to the sealing joint, the
sealing joint is sleeved on a top of the smoke duct and is
connected to the second cylinder.
11. An electronic cigarette, comprising: a first cylinder; a power
source received in an inside of the first cylinder; an airflow
sensor received in the inside of the first cylinder, the airflow
sensor arranged bellow the power source or up the power source, the
airflow sensor arranged along a longitudinal direction of the first
cylinder; a second cylinder connected to a top of the first
cylinder; a smoke duct passing through the second cylinder; an
atomizer being installed at a bottom of the smoke duct and
containing smoke oil, the smoke duct having an oil inlet
communicating with the atomizer, a bottom of the atomizer having a
waterproof membrane, the waterproof membrane being sealed a bottom
opening of the smoke duct, the waterproof member, the smoke duct
and the first cylinder being connected to each other to form an
airflow channel, the waterproof membrane having a material which
prevents the smoke oil from leaking through the waterproof
membrane, and allows an airflow of the airflow channel to pass
through the waterproof membrane.
12. The electronic cigarette as claimed in claim 11, wherein the
atomizer has a heating wire with a spiral structure.
13. The electronic cigarette as claimed in claim 12, wherein the
smoke duct has a guiding cavity and an atomization cavity
communicated to and arranged below the guiding cavity, the atomizer
is positioned in the atomization cavity.
14. The electronic cigarette as claimed in claim 13, wherein the
waterproof membrane is sealed to a bottom opening of the
atomization cavity of the smoke duct.
15. The electronic cigarette as claimed in claim 11, wherein a
connector head is positioned at a bottom of the second cylinder and
interconnected the top of the first cylinder and the bottom of the
second cylinder.
16. The electronic cigarette as claimed in claim 15, wherein a
sleeve is positioned at the top of the first cylinder and engaged
with the connector head.
17. The electronic cigarette as claimed in claim 11, wherein a
first conductive pillar is positioned at a bottom of the second
cylinder.
18. The electronic cigarette as claimed in claim 17, wherein a
second conductive pillar is positioned at the top of the first
cylinder.
19. An electronic cigarette, comprising: a case; a power source
positioned in the case; an airflow sensor positioned in the case; a
suction nozzle connected to the case; a smoke duct positioned in
the case, the smoke duct having a first opening and a second
opening, the first opening communicated with the suction nozzle;
and an atomizer communicated with the second opening of the smoke
duct, the atomizer containing smoke oil, a side of the atomizer
being sealed by a waterproof membrane, the waterproof membrane
having a material which prevents the smoke oil from leaking through
the waterproof membrane, and allows an airflow of the smoke duct to
pass through the waterproof membrane.
20. The electronic cigarette as claimed in claim 19, wherein the
atomizer is received in the second opening of the smoke duct, the
waterproof membrane seals the second opening of the smoke duct.
Description
CROSS REFERENCE TO RELATED APPLICATION
[0001] The present application is based on, and claims priority
from, China Patent Application No. 201921782204.X, filed Oct. 22,
2019, the disclosure of which is hereby incorporated by reference
herein in its entirety.
BACKGROUND OF THE INVENTION
1. Field of the Invention
[0002] The present invention generally relates to an electronic
cigarette and more particularly to an electronic cigarette with
breathing sensing function.
2. The Related Art
[0003] Unlike traditional tobacco that needs to be ignited by an
open flame, electronic cigarette is a non-burning device that
generates heat, it uses electric heating elements to heat the
shredded tobacco or vaporizable oil, so that it releases smoke
particles and the smoke particles are inhaled by people, so as to
achieve the same pleasure as smoking traditional tobacco. When the
user has a smoking action, the electronic cigarette automatically
turns on the power and starts working. When the electronic
cigarette is idle for a long time, the electronic cigarette will
automatically turn off the power. It saves the trouble of operating
the power switch, and avoids the electronic cigarette burning for a
long time due to the power switch is forgot to be turned off.
[0004] However, for this electronic cigarette, the first guarantee
is that the vaporizable oil must not leak out. Therefore, if the
airflow sensor and oil storage are installed at the upper portion
of the electronic cigarette, the upper portion of the electronic
cigarette becomes wide. So the electronic cigarette becomes
large.
[0005] As a portable appliance, electronic cigarette is more
concerned about the lightweight and downsizing. Therefore, it is
necessary to improve the installation position of the oil storage
and the airflow sensor of the electronic cigarette.
SUMMARY OF THE INVENTION
[0006] An object of the present invention is to provide an
electronic cigarette, includes a mouthpiece section has a suction
nozzle; a rod section has a first cylinder; a power source received
in the first cylinder; an airflow sensor received in the first
cylinder and arranged along a longitudinal direction of the power
source; an atomizing section has a second cylinder, one end of the
second cylinder connected to the mouthpiece section, the other end
of the second cylinder connected to the first cylinder, the second
cylinder contain smoke oil; a smoke duct received in the second
cylinder and being passed through the second cylinder; and an
atomizer installed at a bottom of the smoke duct, the smoke duct
has an oil inlet communicate with the atomizer, a bottom of the
atomizer has a waterproof membrane, the waterproof membrane sealed
a bottom opening of the smoke duct, the waterproof member, the
suction nozzle, the smoke duct and the first cylinder are connected
to each other to form an airflow channel, the waterproof membrane
has a material which prevents the smoke oil from leak through the
waterproof membrane, and allows an airflow of the airflow channel
to pass through the waterproof membrane.
[0007] Another object of the present invention is to provide an
electronic cigarette, includes a first cylinder; a power source
received in an inside of the first cylinder; an airflow sensor
received in the inside of the first cylinder, the airflow sensor
arranged bellow the power source or up the power source, the
airflow sensor arranged along a longitudinal direction of the first
cylinder; a second cylinder connected to a top of the first
cylinder; a smoke duct pass through the second cylinder; an
atomizer is installed at a bottom of the smoke duct and contain
smoke oil, the smoke duct has an oil inlet communicate with the
atomizer, a bottom of the atomizer has a waterproof membrane, the
waterproof membrane is sealed a bottom opening of the smoke duct,
the waterproof member, the smoke duct and the first cylinder are
connected to each other to form an airflow channel, the waterproof
membrane has a material which prevents the smoke oil from leaking
through the waterproof membrane, and allows an airflow of the
airflow channel to pass through the waterproof membrane.
[0008] Another object of the present invention is to provide an
electronic cigarette, includes a case; a power source positioned in
the case; an airflow sensor positioned in the case; a suction
nozzle connected to the case; a smoke duct positioned in the case,
the smoke duct has a first opening and a second opening, the first
opening communicated with the suction nozzle; and an atomizer
communicated with the second opening of the smoke duct, the
atomizer contain smoke oil, a side of the atomizer is sealed by a
waterproof membrane, the waterproof membrane has a material which
prevents the smoke oil from leak through the waterproof membrane,
and allows an airflow of the smoke duct to pass through the
waterproof membrane.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The present invention will be apparent to those skilled in
the art by reading the following description, with reference to the
attached drawings, in which:
[0010] FIG. 1 is a perspective view of an electronic cigarette with
breathing sensing function in accordance with the present
invention;
[0011] FIG. 2 is a section view of FIG. 1;
[0012] FIG. 3 is an enlarged image of area A of FIG. 2;
[0013] FIG. 4 is an exploded view of FIG. 1;
[0014] FIG. 5 is a perspective view showing a smoke duct in
accordance with the present invention;
[0015] FIG. 6 is a perspective view showing an atomizer in
accordance with the present invention;
[0016] FIG. 7 is a perspective view showing a connector head in
accordance with the present invention;
[0017] FIG. 8 is a perspective view showing a sleeve in accordance
with the present invention;
[0018] FIG. 9 is a perspective view showing a connection structure
of a first conductive pillar and a second conductive pillar in
accordance with the present invention;
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0019] With reference to FIG. 1 to FIG. 5, an electronic cigarette
with breathing sensing function in accordance with the present
invention is shown. The electronic cigarette includes a mouthpiece
section 1, an atomizing section 2 and a rod section 3 from top to
bottom, respectively. The mouthpiece section 1 is used to provide a
suction nozzle 11. The smoke generated from the atomizing section 2
passes through the mouthpiece section 1 and finally reaches the
user's mouth. When the electronic cigarette is used, the mouthpiece
section 1 is directly held in the user's mouth. The rod section 3
is mounted on a bottom of the electronic cigarette, which is
gripped by user's hand.
[0020] The rod section 3 has a first cylinder 30 for accommodating
a power source 31. The power source 31 is installed in the first
cylinder 30 and provides energy for the atomizing section 2. The
first cylinder 30 has an airflow sensor 32 arranged along a
longitudinal direction of the power source 31. The airflow sensor
32 can installed at a bottom end or a top end of the power source
31. The atomizing section 2 is arranged between the mouthpiece
section 1 and the rod section 3. The atomizing section 2 includes a
second cylinder 20, a smoke duct 21 and an atomizer 22. One end of
the second cylinder 20 is connected to the mouthpiece section 1,
and the other end of the second cylinder 20 is connected to the
first cylinder 30.
[0021] An inner wall of the second cylinder 20 and an outer wall of
the smoke duct 21 are together formed a space which works as a
smoke oil storage 23 for containing smoke oil. The smoke duct 21
passes through the second cylinder 20. In this embodiment, the
smoke duct 21 includes a guiding cavity 210 which is arranged at a
top of the smoke duct 21 and extended into the mouthpiece section
1, and an atomization cavity 211 which is arranged at a bottom of
the smoke duct 21 and communicated with the second cylinder 20. The
atomizer 22 is installed in the atomization cavity 211. The working
state of the atomizer 22 is controlled by the airflow sensor 32.
According to sensing result of the airflow sensor 32, the atomizer
22 is turned on or turned off. A bottom of the atomizer 22 has a
waterproof membrane 24, an edge of the waterproof membrane 24 is
connected with an inner wall of the smoke duct 21. The waterproof
membrane 24 seals the bottom of the atomizer 22. The waterproof
membrane 24, the mouthpiece section 1, the smoke duct 21 and the
first cylinder 30 are communicated to each other to form an airflow
channel, so that the external airflow can enter in the airflow duct
to trigger the airflow sensor 32. The waterproof membrane 24 has a
special material which prevents the liquid smoke oil in the smoke
oil storage 23 from passing through the waterproof membrane 24, and
allows the airflow passing through the waterproof membrane 24.
Through the installation of the waterproof membrane 24 not only
solves the problem of smoke oil leakage, but also solves the
problem of passing airflow in the airflow channel. In order to
facilitate the user to observe the amount of smoke oil in the smoke
oil storage 23, the second cylinder 20 is formed of a transparent
glass.
[0022] The following describes discloses the structural principle
of the electronic cigarette. As shown in FIG. 2 and FIG. 3, when
the suction nozzle 11 is held in the user's mouth and the user
sucks the electronic cigarette, the waterproof membrane 24, the
smoke duct 21 and the first cylinder 30 are formed as a negative
pressure channel. So that a sensing airflow is formed from a bottom
end of the first cylinder 30, through the waterproof membrane 24
into the atomizer 22 and the smoke duct 21, and through the smoke
duct 21 into the user's mouth. The sensing airflow triggers the
airflow sensor 32, thereby turns on the atomizer 22, so that the
atomizer 22 starts to work. Then the smoke particles generated by
the atomizer 22 enter the mouthpiece section 1 through the smoke
duct 21 into the user's mouth. Therefore, the electronic cigarette
with breath sensing function not only realizes the function of
automatically turning on the power source 31 through the suction
action. Moreover, the airflow sensor 32 and the second cylinder 20
containing the smoke oil are arranged in a separated longitudinal
direction. It is no longer necessary to provide a separate
installation structure for the airflow sensor 32 in the atomizing
section 2. So that the electronic cigarette has a slender, light
and coordinated structure, and can also avoid the leakage of smoke
oil.
[0023] With reference to FIG. 3 and FIG. 4, because of the
waterproof membrane 24 is relatively thin, in order to facilitate
installation and increase its service life, the waterproof membrane
24 is clamped between two rubber rings 25. The rubber rings 25 are
cylindrical structures, so that the smoke duct 21, the atomizer 22
and the two rubber rings 25 can communicate with each other to form
the airflow channel.
[0024] As shown in the FIG. 3, FIG. 5 and FIG. 6, the atomizer 22
includes a cylindrical heater 220, a heating wire 221 in a cavity
of the heater 220, and an oil-absorbing cotton 222 covering an
outer wall of the heater 220. The oil inlet has a plurality of oil
inlet holes 212 opened on a side wall of the atomization cavity 211
of the smoke duct 21. The heating wire 221 is used to heat up the
heater 220, and the heater 220 is used to heat up the oil-absorbing
cotton 222, thereby atomizing the smoke oil in the oil-absorbing
cotton 222. In this embodiment, the heater 220 is a ceramic tube,
the smoke oil in the smoke oil storage 23 enters the oil-absorption
cotton 222 through the oil inlet holes 212 of the atomization
cavity 211, and the smoke oil is absorbed by the oil-absorption
cotton 222. When the atomizer 22 is turned on, the heating wire 221
is heating up to rise the temperature of the heater 220. Then the
smoke oil absorbed on the oil-absorbing cotton 222 is atomized to
generate smoke particles, and the smoke particles enter the guiding
cavity 210 from the atomization cavity 211 and inhaled by the
user.
[0025] In order to facilitate the replacement of the power source
31 and the atomizer 22, as shown in FIG. 3, and FIG. 7, a bottom of
the second cylinder 20 has a connector head 26. The connector head
26 is formed as a T-shaped viewed from lateral side and formed as a
ring structure viewed from top side and bottom side. The second
cylinder 20 is detachably connected to the first cylinder 30
through the connector head 26. Through the connector head 26, the
atomizing section 2 can be separated from the rod section 3.
Preferably, the atomization cavity 211 of the smoke duct 21 extends
downward to an outside of the second cylinder 20. The atomization
cavity 211 of the smoke duct 21 extends downward and extends into
the connector head 26.
[0026] A top of the connector head 26 is sleeved on an outer wall
of the atomization cavity 211 of the smoke duct 21. A bottom of the
connector head 26 is extended into the first cylinder 30 and is
screwed with the first cylinder 30. In this embodiment, in order to
ensure a sealed connection between the bottom of the second
cylinder 20 and the outer wall of the atomization cavity 211, an
inner wall of the bottom of the second cylinder 20 defines an
annular rib (not shown) and the outer wall of the atomization
cavity 211 defines an annular shoulder 213 abutted against the
annular rib, and a sealing ring 29 is sandwiched in between the
annular shoulder 213 and the annular rib.
[0027] As shown in FIG. 3 and FIG. 8, a sleeve 33 is inserted into
a top opening of the first cylinder 30. An inner wall of the sleeve
33 has an internal thread. An outer wall of a lower portion of the
connector head 26 has an external thread matching the internal
thread of the sleeve 33. During assembly, the connector head 26 can
be screwed with the sleeve 33.
[0028] Because of the power source 31 is installed in the first
cylinder 30 of the rod section 3 and the atomizer 22 is installed
in the second cylinder 20 of the atomization section 2, the
connection and disconnection of the electrode between the power
supply 31 and the heating wire 221 are required. As shown in FIG.
3, FIG. 4 and FIG. 9, a cavity is formed inside the connector head
26. A hollow first conductive pillar 27 is positioned in a bottom
of the cavity of the connector head 26. A hollow second conductive
pillar 34 is positioned in a middle of a cavity of the sleeve 33.
When the connector head 26 and the sleeve 33 are threaded together,
the first conductive pillar 27 is connected to the second
conductive pillar 34. A positive end of the heating wire 221 is
electrically connected to the first conductive pillar 27, and a
positive end of the power source 31 is electrically connected to
the second conductive pillar 34 through the airflow sensor 32. So
that the positive end of the heating wire 221 electronically
connects with a positive output of the airflow sensor 32.
[0029] When the atomizing section 2 and the rod section 3 are
disassembled, the first conductive pillar 27 and the second
conductive pillar 34 are separated, so that the heating wire 221
disconnects from the power source 31. In addition, in order to
facilitate the installation of the first conductive pillar 27 and
the second conductive pillar 34, an inner wall of the connector
head 26 has a ring-shaped first flange 260, and an inner wall of
the sleeve 33 has a ring-shaped second flange 330. The first
conductive pillar 27 and the second conductive pillar 34 are
engaged with the first flange 260 and the second flange 330,
respectively.
[0030] For the setting of the negative electrode between the
heating wire 221 and the power source 31, as shown in FIG. 3, FIG.
4 and FIG. 9, both the connector head 26 and the sleeve 33 are
formed of metal material. A negative end of the heating wire 221
passes through the heater 220 and electrically connects to the
connector head 26. A first insulating sleeve 28 is sleeved on the
first conductive pillar 27. A second insulating sleeve 35 is
sleeved on the second conductive pillar 34. An outer surface of the
first insulating sleeve 28 defines a first slot 280 for engaging
with the first flange 260, and an outer surface of the second
insulating sleeve 35 defines a second slot 350 for engaging with
the second flange 330. In this embodiment, the sleeve 33 and the
connector head 26 are used as negative connection lines, and
therefore an additional negative line structure is avoided. The
electronic cigarette has simple design and low cost of
manufacture.
[0031] Specifically, as shown in FIG. 4, a positive elastic sheet
310 and a negative elastic sheet 311 of the power source 31 are
respectively fixed in an insulating elastic rubber pad 40. The
airflow sensor 32 is disposed below the positive end of the power
source 31. The positive electrode sheet 310 and the negative
electrode sheet 311 of the power source 31 are electrically
connected to the airflow sensor 32 through a first connecting wire
41 and a second connecting wire 42 respectively. The airflow sensor
32 is electrically connected to the second conductive pillar 34
through a third connection wire 43, and the second connection wire
42 is also electrically connected to the sleeve 33.
[0032] Further, as shown in FIG. 1 to FIG. 4 and FIG. 8, according
to the principle of airflow, when the sensing airflow is generated
in the smoke duct 21, in order to improve sensing airflow at the
airflow sensor 32, the airflow sensor 32 can be immediately
triggered, a top of the sleeve 33 protrudes outward to form an
annular flange 331. A top edge of the first cylinder 30 abuts on a
bottom edge of the annular flange 331. Outer surfaces of the
annular flange 331 and the sleeve 33 define at least one air inlet
332 communicates with the inside of the first cylinder 30. Because
the air inlet 332 communicates with the inside of the first
cylinder 30, when negative pressure is generated in the first
cylinder 30 due to suction action, the external airflow enters in
the first cylinder 30 through the air inlet 332. Therefore, the
sensing airflow generates a pushing force on the airflow sensor 32,
so that the sensitive performance of the airflow sensor 32 is
ensured, and the airflow sensor 32 can immediately perform
actions.
[0033] As shown in the FIG. 4, the mouthpiece section 1 includes a
sealing joint 10 having a hollow structure and a suction nozzle 11
plugs to the sealing joint 10. The sealing joint 10 is sleeved on
the top of the smoke duct 21 and is tightly connected to the second
cylinder 20. The user can easily suck the electronic cigarette
through the suction nozzle 11.
[0034] As described above, the electronic cigarette has a case, in
this embodiment, the first cylinder 30 and the second cylinder 20
are assembled into the case. The power source 31, the airflow
sensor 32, the atomizer 25, the smoke duct 21 and the airflow
channel are positioned in the case. When the user sucks the
electronic cigarette, the external airflow enters in the first
cylinder 30 through the air inlet 332 of the sleeve 33, the
external airflow in the case becomes the sensing airflow because of
the negative pressure channel formed in the case. The sensing
airflow pushes the airflow sensor 32 and the airflow sensor 32 is
triggered. In this embodiment, the hollow first conductive pillar
27 has a first channel penetrating a top and a bottom of the hollow
first conductive pillar 27. The hollow second conductive pillar 34
have a second channel penetrating a top and a bottom of the hollow
second conductive pillar 34.
[0035] In this embodiment, the negative pressure channel is
constructed by an inner surface of the smoke duct 21, an inner
surface of the cylinder heater 220 of the atomizer 22, an inner
surface of the first channel of the hollow first conductive pillar
27, an inner surface of the second channel of the hollow second
conductive pillar 34, an inner surface of the first cylinder30 and
the waterproof membrane 24. Because of the waterproof membrane 24
prevents the liquid smoke oil in the oil-absorbing cotton 222 of
the atomizer from leaking through waterproof membrane 24, and
allows the airflow passing the waterproof membrane 24 in the case,
that the atomizer 22 leaks the liquid smoke oil into the first
cylinder 30 is prevented. The smoke particles are carried by the
airflow in the case, and the waterproof membrane 24 allows the
airflow to pass through the waterproof membrane 24. Therefore, the
electronic cigarette can prevent liquid smoke oil from leaking into
the first cylinder 30 by simple design of the waterproof membrane
24. The power source 31 and the airflow sensor 32 in the first
cylinder 30 can be protected by the waterproof membrane 24.
* * * * *