U.S. patent application number 13/548659 was filed with the patent office on 2012-11-01 for electronic cigarette.
This patent application is currently assigned to RUYAN INVESTMENT (HOLDINGS) LIMITED. Invention is credited to Lik Hon.
Application Number | 20120273589 13/548659 |
Document ID | / |
Family ID | 33315358 |
Filed Date | 2012-11-01 |
United States Patent
Application |
20120273589 |
Kind Code |
A1 |
Hon; Lik |
November 1, 2012 |
ELECTRONIC CIGARETTE
Abstract
An electronic cigarette comprises nicotine without harmful tar.
The cigarette includes a shell, a cell, nicotine solution, control
circuit, and an electro-thermal vaporization nozzle installed in
the air suction end of the shell. The advantages are smoking
without tar, reducing the risk of cancer, the user still gets a
smoking experience, the cigarette is not lit, and there is no fire
danger.
Inventors: |
Hon; Lik; (North Point,
HK) |
Assignee: |
RUYAN INVESTMENT (HOLDINGS)
LIMITED
Road Town
VG
|
Family ID: |
33315358 |
Appl. No.: |
13/548659 |
Filed: |
July 13, 2012 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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13088276 |
Apr 15, 2011 |
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13548659 |
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10547244 |
Feb 27, 2006 |
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PCT/CN2004/000182 |
Mar 8, 2004 |
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13088276 |
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Current U.S.
Class: |
239/128 |
Current CPC
Class: |
A24F 40/40 20200101;
A24F 47/008 20130101; H05B 1/0202 20130101; H05B 3/0014 20130101;
A61K 9/007 20130101; H02J 7/00 20130101; A24B 15/167 20161101; A24F
40/485 20200101; H05B 1/0244 20130101; A24F 40/60 20200101; A24F
40/90 20200101; A24F 40/10 20200101; H02J 7/0045 20130101; A24F
47/002 20130101 |
Class at
Publication: |
239/128 |
International
Class: |
B05B 7/16 20060101
B05B007/16 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 29, 2003 |
CN |
03111582.9 |
Claims
1. An atomizer for an electronic cigarette, comprising: an
enclosure; a wire heater coil within the enclosure; the enclosure
having an inlet; and the enclosure having an outlet to allow vapor,
formed within the enclosure by liquid contacting the wire heater
coil, to flow out of the enclosure.
2. The atomizer of claim 1 with the enclosure comprising a fiber
material.
3. The atomizer of claim 1 with the inlet at one end of the
enclosure and the outlet at an opposite end of the enclosure
4. The atomizer of claim 1 with the enclosure comprising a
substantially cylindrical tube.
5. The atomizer of claim 1 further comprising a base attached to
the enclosure.
6. The atomizer of claim 5 with the inlet at least partially in the
base.
7. The atomizer of claim 5 wherein the base is cylindrical.
8. The atomizer of claim 7 with the inlet extending through the
cylindrical base.
9. The atomizer of claim 5 further comprising screw threads on the
base.
10. The atomizer of claim 4 with the tube having an inner diameter
of 0.05 to 2 mm.
11. The atomizer of claim 4 with the tube having a length of 3-20
mm.
12. The atomizer of claim 1 further comprising a liquid tube
connecting into the inlet, for providing liquid into the
enclosure.
13. An atomizer for an electronic cigarette, comprising: a tube
having a liquid inlet; a wire heater coil within the tube; the tube
having a vapor outlet to allow vapor, formed within the enclosure
by liquid contacting the wire heater coil, to flow out of the
tube.
14. The atomizer of claim 13 with the tube comprising a fiber
material.
15. The atomizer of claim 13 with the liquid inlet at a first end
of the tube and with the vapor outlet comprising an opening at a
second end of the tube.
16. The atomizer of claim 13 with a longitudinal axis of the wire
heater coil substantially parallel to a longitudinal axis of the
tube.
17. The atomizer of claim 13 further comprising a base attached to
the tube, with the liquid inlet extending through the base.
Description
[0001] This Application is a Continuation of U.S. patent
application Ser. No. 13/088,276 filed Apr. 19, 2012 and now
pending, which is a Division of U.S. patent application Ser. No.
10/547,244 filed Feb. 27, 2006 and now abandoned, which is the U.S.
National Phase Application of International Patent Application No.
PCT/CN2004/000182 filed Mar. 8, 2004, which claims priority to
Chinese Patent Application No. 03111582.9 filed Apr. 29, 2003.
These applications are incorporated herein by reference.
BACKGROUND OF THE INVENTION
[0002] Although smoking may cause serious respiratory diseases and
cancer, it remains extremely difficult for smokers to quit smoking
completely.
[0003] The active ingredient in a cigarette is nicotine. When
smoking, nicotine, along with a lot of tar aerosol droplets from
the burning cigarette, enters smoker's alveolus and is rapidly
absorbed. The nicotine then produces a relaxing effect on the
receptors of the smoker's central nervous system.
[0004] Nicotine is a kind of alkaloid with low molecular weight. A
small dose of nicotine is essentially harmless to human body and
its half-life in blood is quite short. The major harmful substance
in tobacco is tar. The tar in tobacco contains carcenogenic
substances.
[0005] Some cigarette substitutes that contain only nicotine
without tar have been proposed. Although these cigarette
substitutes are free from tar, their major disadvantage is that an
effective peak concentration cannot be reached in the blood of a
smoker due to slow absorption of nicotine. In addition, these
cigarette substitutes cannot satisfy habitual smoking actions of a
smoker, for example, inhaling action or sucking action, and thus
are not likely to be widely accepted as effective substitutes for
quitting smoking.
SUMMARY OF THE INVENTION
[0006] An objective of the present invention is to provide an
electronic cigarette that overcomes the above-mentioned
disadvantages. The present electronic cigarette includes a shell, a
cell, nicotine solution, a control circuit, a high temperature
vaporization nozzle and accessories. An electro-thermal
vaporization nozzle is arranged within an air suction end of the
shell. The control circuit provides starting current to the
electric heater within the vaporization nozzle. Under the high
temperature in the vaporization nozzle, the liquid is rapidly
vaporized. The cell which provides power to the electric heater via
the control circuit can be a disposable battery or a rechargeable
battery.
[0007] The advantages of the present invention include smoking
without tar, significantly reducing the carcinogenic risk.
Furthermore, users still feel as if they are smoking, and the
cigarette has no need to be lit and has no fire risk.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 is a structural diagram of the device in the first
example in accordance with the present invention.
[0009] FIG. 2 is a block diagram of the circuit structure.
[0010] FIG. 3 is a schematic diagram of the structure of the high
temperature vaporization nozzle and the electric-thermal
element.
[0011] FIG. 4 is a schematic diagram of the valve made of memory
alloy.
[0012] FIG. 5 is a schematic diagram of the peristaltic pump made
of memory alloy.
[0013] FIG. 6 is a schematic diagram of the peristaltic pump.
[0014] FIG. 7 is a structural diagram of the electronic cigarette
in a second example.
[0015] FIG. 8 is a structural diagram of the electronic cigarette
in a third example.
[0016] FIG. 9 is a structural diagram of the electronic cigarette
in a fourth example.
[0017] FIG. 10 is a structural diagram of the metering cavity in
the fourth example.
DETAILED DESCRIPTION
[0018] The high frequency generator of a control circuit board 8 is
composed of a capacitance connecting three point type oscillator,
an inductance connecting three point type oscillator, or a
transformer-type oscillating circuit, which has the frequency of 35
KHz to 3.3 MHz. The circuit includes a automatic frequency
fine-adjusting circuit resonating with a piezoelectric element 20.
A nicotine solution storage container 13 is made of silicon rubber,
alternatively, other polymers that can be protected against the
penetration of nicotine can be used. A one-way valve for liquid
injection 12 is sealed by a ball or cone member under the pressure
of a spring. An airflow sensor 18 can be comprised of an array of
integrated thermal sensitive resistors in the shape of film. The
electrode of a resistance or capacitance sensor 19, which is
sensitive to touches of human body, is composed of an upper metal
film and a lower metal film and located at the end of the cigarette
holder. The changes of the resistance or capacitance parameters due
to human touch are inputted into the control circuit to perform the
operation of a body sensitive switch.
[0019] The electric controlled pump 11, driven by a motor or a
linear motor, drives a retarder that has a large speed ratio, via a
shaft coupling, to revolve at a low speed but with large torque.
The pump can be a peristaltic pump, a plunger pump, an eccentric
pump or a screw pump. Alternatively, the liquid pump can use
piezoelectric pump, a super magnetostrictive pump, a thermal
expansion drive pump, a thermal contraction drive pump, a thermal
bubble pump. The electric control pump or valve may be thermal
contractible.
[0020] The valve is formed on a silicon rubber tube by
nickel-titanium memory alloy or copper-based memory alloy under the
force of electro-thermal contractions.
[0021] The electro-thermal vaporization nozzle 17 is made of
high-temperature resistant materials with low thermal conductivity.
The nozzle 17 is a tubule, with the internal diameter of a 0.05-2
mm and the effective working length of 3-20 mm. An electric heating
element is provided within the nozzle, and the shapes of the
electric heating element and the cavity of the nozzle are designed
to facilitate vaporization and ejection of liquid. The vaporization
nozzle 17 may be made of conventional ceramics, or be made of
aluminum silicate ceramics, titanium oxide, zirconium dioxide,
yttrium oxide ceramics, molten silicon, silicon dioxide, molten
aluminum oxide. The vaporization nozzle 17 may be in the shape of
straight tube or spiral, and may also be made from
polytetrafluoethylene, carbon fiber, glass fiber or other materials
with similar properties.
[0022] The electric heating element arranged within the
vaporization nozzle 17 may be made of wires of nickel chromium
alloy, iron chromium aluminum alloy, stainless steel, gold,
platinum, tungsten molybdenum alloy, etc., and may be in the shape
of straight line, single spiral, double spiral, cluster or spiral
cluster wherein the straight line and cluster are preferred. The
heating function of the electric heating element may be achieved by
applying a heating coating on the inner wall of the tube, and the
coating may be made from electro-thermal ceramic materials,
semiconductor materials, corrosion-resistant metal films, such as
gold, nickel, chromium, platinum and molybdenum. The method for
coating can include a coat sintering process, a chemical deposition
sintering process and an ion spraying process. The materials
mentioned above can be provided within the inner wall of
vaporization nozzle in any of the processes mentioned above.
[0023] The nozzle with high resistance, made of metal, can have no
electric heating element being attached, and can be directly
applied with heating current. Alternatively, the materials
mentioned above can be arranged outside of the nozzle in any of the
ways mentioned above, and an appropriate response time can also be
achieved in the power supply mode of short-term preheating.
Nicotine solution used in the atomization process comprises
nicotine, propylene glycol, glycerol, organic acids, anti-oxidation
agents, essence, water and alcohol, in which the nicotine content
is 0.1%-6%, propylene glycol content 80%-90%, organic acids
0.2%-20%, the rest is glycerol, essence, anti-oxidation agents,
water and alcohol.
Example 1
The Structural Diagram of the Device Shown in FIG. 1
[0024] When a smoker puts the cigarette holder on his/her mouth,
the resistance sensor 19 activates the control circuit board 8. The
control circuit board 8 then outputs two driving voltages
respectively, one used to supply power to the electric heating
element of the vaporization nozzle 17 and the other used to
activate the micro pump 11 (shown in FIG. 6). The stored solution
is then pumped to the nozzle 17 by the solution storage container
13. On the electric heating element of the nozzle 17, the nicotine
solution is then vaporized into high temperature vapor which is
subsequently ejected from the opening end. In the air, the vapor
ejected out is then expanded and condensed into micro aerosol
droplets.
[0025] The effect of the ultrasonic piezoelectric element 20
mounting on the nozzle is that, firstly, the large liquid droplets
in the unstable thermal airflow under high pressure will be in
sufficient contact with the electric heating element, and thereby
be vaporized.
[0026] Secondly, the liquid droplets in the nozzle 17 are directly
fragmented and atomized.
[0027] Thirdly, possible bumping when the liquid is above a boiling
point will be avoided. The effect of integrated atomization will
allow aerosol droplets with diameters of 0.2-3 um to enter into the
alveolus easily and be absorbed. The airflow sensor 18 is sensitive
to the diluted air which enters through air inlet 16 when a
"suction" action take places. The sensed signals are transmitted to
the control circuit, and the control circuit then stop to supply
power to the micro pump and the electric heater after a certain
time delay.
[0028] The relay relationship between the time delays of the micro
pump and electric heater is as follows: after the electric heater
is activated, the micro pump is activated after a time delay of
0.1-0.5 seconds; the electric heater is then turned off after a
time delay of 0.2-0.5 seconds when the control circuit of the micro
pump is turned off, so as to guarantee a complete vaporization of
the liquid after quantitative liquid injection without any
leftovers.
[0029] The nicotine solution container may be designed to be
different sizes as required. The nicotine solution may be refilled
once a day, or once a couple of days. The liquid crystal display
screen 10 can show operating state parameters, such as cell
capacity, smoking times per day, average using cycle and warnings
for over smoking. A red LED 3 blinks for each smoking action, and a
sawtooth wave signal that lasts for 1.2 seconds is given by the
control circuit for blinking signals, which provides a gradual
change of luminance to imitate the ignition and combustion process
of a conventional cigarette. The charger 1, charging jack 2, spring
4, shell 6, threads 7, switch 9, passage tube 14 and baffle plate
15 are shown in FIG. 1. The silicon gel tube 601, pinch roller 602,
worm 603 and motor 604 are shown in FIG. 6.
[0030] The control circuit and the ultrasonic micro pump may be
integrated on one single chip by using a Micro Electronic
Mechanical System (MEMS).
Example 2
The Simplified Electronic Cigarette
[0031] FIG. 7 is a structural diagram of the simplified device in
which the ultrasonic atomization high frequency generator and the
piezoelectric ceramic element 20 are omitted. To achieve a
desirable atomization effect, tiny heating wires are used in
combination with the nozzle (see FIG. 3), so that the maximum
diameters of one or more vaporization cavities formed between the
heating wires and the inner wall of the nozzle range from 0.02 mm
to 0.6 mm. The function of the airflow sensor 18 omitted is
replaced by the manner that the initial signal of the resistance or
capacitance sensor 119 is delayed a certain time via the control
circuit and acts as the ending signal. The electronic cigarette is
configured as follows: the vaporization nozzle 117, the thermal
drive pump 111 (see FIG. 5) made of nickel titanium memory alloy
wire, and the liquid storage container 113 connected to the thermal
drive pump constitute a liquid transmission system. Two outputs of
the control circuit board 108 are respectively connected to the
electric heater and the pump or valve. A body sensitive resistance
sensor 119 is connected to the input of the control circuit. The
cell 105 and red LED 103 are provided in the front end within the
shell, and resemble a cigarette holder, a pipe or a pen.
[0032] The thermal drive pump is an electro-thermal shrinkable
peristaltic pump, made of wires of nickel titanium memory alloy or
copper based alloy, with gel tube which is pressed at three points
respectively during the process of electro-thermal contraction to
form a pressure cavity for pumping out liquid. The change of volume
of the cavity within the thermal drive pump determines the quantity
of the solution to be atomized each time. Upon contacting with
user's mouth, the resistance senor 119 activates the control
circuit 108, the control circuit 108 then provides operating
current to the thermal drive pump and the electric heater, and the
output of the control circuit is turned off after the delay of 2
seconds for reactivation at the next smoking action. Alternatively,
a thermal expansion drive pump or a thermal bubble pump is also
applicable. The thermal expansion drive pump forms a pressure
cavity for pumping out liquid by allowing a micro hydrogen
container with an embedded electric heating element to block the
liquid inlet and open the liquid outlet at the time of thermal
expansion. The charging jack 102, LED 103, cell 105, switch 109,
liquid-refilling valve 112 and air hole 116 are shown in FIG.
7.
[0033] The electrode lead wire 401, heating wire 402, thread 403,
base 404 and nozzle 405 are shown in FIG. 3. The support 501,
extension spring 502, pumping-out pressure plate 503, silicon gel
tube 504, stop pressure plate 505, supporting spring 506, memory
alloy wire 507, electrode A 508, electrode B 509 and electrode 510
are shown in FIG. 5.
Example 3
The Electronic Cigarette Made of a Ni--Ti Memory Alloy
[0034] FIG. 8 is a structural diagram of the electronic cigarette.
The electrothermal vaporization nozzle 217 of the device is
connected to the liquid storage container 213 via a pneumatic valve
220. The super elastic member 210 is connected to the pressure
plate 211 which is connected to the liquid storage container 213.
The pneumatic valve is composed of a pneumatic film 214, a magnetic
steel ring 218, a steel valve needle 220 and a reset spring 221.
The super elastic member 210, which is made of Ni--Ti memory alloy,
is used to apply a constant pressure on the liquid storage
container via the pressure plate 211. When the pneumatic valve
opens, the liquid with nicotine enters the vaporization nozzle from
the liquid storage container via the pneumatic valve and is
vaporized and condensed subsequently to form a puff of smoke at
high temperature. Upon contacting with user's mouth, the resistance
sensor activates the control circuit to supply power to the
electric heater. When the user performs suction action, the
Nd--Fe--B permanent magnetic alloy ring attracts the valve needle
to move in response to the pneumatic film being subjected to
negative pressure. Liquid is supplied when the valve needle opens,
and after the pneumatic valve is reset, power supply to the
electric heater is turned off after the delay of 0.5 seconds by the
control circuit. The LED 203, charging jack 202, cell 205, control
circuit 208, switch 209, refilling valve 212, baffle plate 215, air
hole 216 and resistance sensor 219 are shown in FIG. 8
Example 4
The Electronic Spray Cigarette Utilizing the Pressure of a
Container
[0035] In the device (see FIG. 9), the electro-thermal vaporization
nozzle 317, the electronic valve 311 connected with the metering
cavity 320, and the liquid storage container 313 form a liquid
transmission passage. A gas vessel filled with high-pressure
nitrogen is arranged around the periphery of the liquid storage
container to exert pressure thereon to facilitate the transmission
of the liquid. When a control signal is applied to the electronic
valve, the electronic valve is activated, and the solution with
nicotine enters the metering cavity from the liquid storage
container under pressure. The solution pushes a piston so as to
allow a constant volume of liquid at the other side of the piston
to enter the vaporization nozzle via the electronic valve. The
metering cavity provided at the valve is a cylinder having a liquid
inlet and a liquid outlet. Located within the cylinder are the
piston micro holes and the reset spring connected onto the piston.
The control circuit which is activated by the resistance sensor 319
controls the states of the electronic valve and the electric heater
respectively. Due to slow infiltration of the micro hole of the
piston in the metering cavity and the force of the reset spring,
the piston returns to its original position within 5-8 seconds
after each atomization process. The cell 305, pressure vessel 321,
pressure chamber 322, seal threaded-opening 323, control circuit
board 308 and air hole 316 are showed in FIG. 9.
[0036] The silicon gel tube 406, pressure-stopping plate 407,
memory alloy wires 408, support 409, electrode lead wire 410 and
pressure spring 411 are shown in FIG. 4. The inlet 701, piston 702,
micro hole of the piston 703, metering cavity 704, reset spring 705
and outlet 706 are shown in FIG. 10.
[0037] The recipes of nicotine solution used:
[0038] 1. 6% nicotine, 85% propylene glycol, 2% glycerol, 2%
essence, 1% organic acid and 1% anti-oxidation agent.
[0039] 2. 4% nicotine, 80% propylene glycol, 5% glycerol, 1% butyl
valerate, 1% isopentyl hexonate, 0.6% lauryl laurate, 0.4% benzyl
benzoate, 0.5% methyl octynicate, 0.2% ethyl heptylate, 0.3% hexyl
hexanoate, 2% geranyl butyrate, 0.5% menthol, 0.5% citric acid and
4% tobacco essence;
[0040] 3. 2% nicotine, 90% propylene glycol, 2.5% citric acid, 1%
essence and 4.5% tobacco essence;
[0041] 4. 0.1% nicotine, 80% propylene glycol, 5% glycerol, 8%
alcohol, 2.9% water, 1% essence, 1% tobacco essence and 2% organic
acid.
* * * * *