Specific embodiment
Presently in connection with attached drawing, the present invention is described in detail.This figure is simplified schematic diagram, is only illustrated in a schematic way
Basic structure of the invention, therefore it only shows the composition relevant to the invention.
Fig. 1-Fig. 3 is please referred to, the present invention provides a kind of electronic cigarette, which includes atomising device 100 and and mist
The power supply device 200 of 100 connections is set in makeup, and power supply device 200 is that atomising device 100 provides electric energy.Wherein, atomising device 100
The air guide component 20 and pipe bowl component 30 including outer tube 10 and being contained in outer tube 10, air guide component 20 and pipe bowl group
The setting of the interval of part 30, and length direction of the air guide component 20 with pipe bowl component 30 along outer tube 10 is set gradually.In use, external
Gas enters in pipe bowl component 30 via air guide component 20, and the smog generated in pipe bowl component 30 is taken out of for user's suction
Food.
Specifically, please refer to Fig. 1, Fig. 2, outer tube 10 substantially has the hollow tube-shape knot of opening in upper and lower ends
Structure is stretched on the inner peripheral surface of outer tube 10 along the radially-inwardly side of outer tube 10 and is formed with first and supports edge 101.Air guide component 20 by
The lower port of outer tube 10 is packed into outer tube 10, and the upper end of air guide component 20 supports and supports on edge 101 first;Pipe bowl group
Part 30 is packed into outer tube 10 by the upper port of outer tube 10, and the lower end of pipe bowl component 30 supports and supports on edge 101 first.
The setting for supporting edge 101 by first, so that pipe bowl component 30 and the setting of the interval of air guide component 20 are generated after contact-free
Conduction of heat has an impact respective temperature, especially when user it is expected the temperature of pipe bowl component 30 and air guide component 20
When different, interval setting can preferably be met the needs of users.
In present embodiment, being radially-inwardly bent to form for the upper end edge outer tube 10 of outer tube 10 second supports edge
102。
Referring to Fig. 2, air guide component 20 includes the air-guide part 21 that is contained in outer tube 10 and for heating air-guide part
21 the first heating member 22.
Referring to Fig. 1, air-guide part 21 substantially has the hollow cylindrical configuration of opening in one end, air-guide part 21 is closely set in
The outside of first heating member 22, and the other end of air-guide part 21 supports the first of outer tube 10 and supports edge 101.It is set on air-guide part 21
It is equipped with helical tooth 211, helical tooth 211 is in the shape of a spiral and ring is located on the outer peripheral surface of air-guide part 21.The side of helical tooth 211 with lead
The outer peripheral surface of gas part 21 is fixedly connected, and helical tooth 211 is resisted against the inner circumferential of outer tube 10 far from the side of 21 outer peripheral surface of air-guide part
On face, the space of the inner peripheral surface composition of helical tooth 211, the outer peripheral surface of air-guide part 21 and outer tube 10 constitutes spiral shape as a result,
Inlet channel 212.
It is to be appreciated that helical tooth 211 is in the shape of a spiral and ring is located at outer tube 10 in other unshowned embodiments
Inner peripheral surface on.The side of helical tooth 211 is fixedly connected with the inner peripheral surface of outer tube 10, and helical tooth 211 is far from outer tube 10
The side of circumferential surface is resisted against on the outer peripheral surface of air-guide part 21, as a result, the outer peripheral surface and outer tube of helical tooth 211, air-guide part 21
The space of 10 inner peripheral surface composition constitutes spiral inlet channel 212.
It is to be appreciated that air-guide part 21 is a porous member in other unshowned embodiments, air-guide part 21 is set in
Outside first heating member 22, and, the outer peripheral surface of air-guide part 21 is resisted against on the inner peripheral surface of outer tube 10, and the hole in air-guide part 21 connects
It is logical to form the inlet channel 212.Hole in porous member, increases specific surface area, so that the heating surface area of air-flow increases, separately
Outside, due in porous member hole complications connection, extend the flow path of air-flow, that is, increase air-flow it is heated when
Between.
Referring to Fig. 2, one end that air-guide part 21 supports edge 101 far from first is stretched along the radially outward side of air-guide part 21 and to be formed
There is the first flange 213, air-guide part 21, which is stretched with respect to one end of the first flange 213 along the radially outward side of air-guide part 21, is formed with second
Flange 214, when air-guide part 21 is installed in place in outer tube 10, the outer peripheral surface of the first flange 213 and the second flange 214 it is outer
Circumferential surface is held on the inner peripheral surface of outer tube 10, and the upper surface of the second flange 214 is held in first and supports on edge 101.This
In embodiment, the connection of the outer peripheral surface of the first flange 213 and the inner peripheral surface interference fit of outer tube 10 both to realize is closed
System.It is to be appreciated that the first flange 213 can also be connected with outer tube 10 by screw thread in other unshowned embodiments
It connects, be clamped or the mode of grafting connects, herein with no restriction.
In order to promote the air-tightness between the second flange 214 and outer tube 10, air guide component 20 further includes being located in second
Flange 214 and first supports first seal 23 between edge 101, it is possible to understand that ground, first seal 23 can by rubber or
Silica gel material is made.
Enter in electronic cigarette for the ease of extraneous gas, on the first flange 213 around air-guide part 21 axis be provided with to
Few first air inlet 2131, and each first air inlet 2131 is connected with inlet channel 212.For the ease of heated
Gas enters in pipe bowl component 30, and the axis on the second flange 214 around air-guide part 21 is provided at least one second air inlet
2141, and each second air inlet 2141 is connected with inlet channel 212.It is to be appreciated that in other unshowned realities
It applies in mode, the lower part of 10 side wall of outer tube can also be arranged in the first air inlet 2131, need to only meet the first air inlet 2131
It is connected to inlet channel 212, alternatively, the first air inlet 2131 is arranged on the first flange 213 and outer tube 10 simultaneously.
First heating member 22 is electrically connected with power supply device 200, and 200 the first heating member of electric drive 22 of power supply device is to make
It obtains the first heating member 22 and generates heat.In present embodiment, the first heating member 22 is set in air-guide part 21.It is to be appreciated that
In other unshowned embodiments, the first heating member 22 can also be set in outside air-guide part 21, alternatively, can also be arranged in
In the wall body of air-guide part 21.In present embodiment, the first heating member 22 is METAL HEATING PROCESS stick, and the lower end of the first heating member 22 is downward
Extend to form a pair of pin 221 being electrically connected with power supply device 200.It is to be appreciated that in other unshowned embodiment party
In formula, the first heating member 22 can also be the club shaped structures such as ceramic heating bar, or, the first heating member 22 is spiral helicine heating
Silk, heater strip is set around the outside of air-guide part 21, and the heater strip of each circle is embedded at the tooth socket of corresponding helical tooth 211
It is interior, alternatively, the first heating member 22 is sintering in the intracorporal heater strip of 21 wall of air-guide part.
When the first heating member 22 is club shaped structure, it is possible to understand that ground, in other unshowned embodiments, air-guide part
21 can also omit, at this point, inlet channel 212 is by the sky between the outer peripheral surface of the first heating member 22 and the inner peripheral surface of outer tube 10
Between constitute.
Referring to Fig. 1, pipe bowl component 30 includes the pipe bowl 31 that is contained in outer tube 10 and for heating pipe bowl 31
Second heating member 32.
Pipe bowl 31 substantially has the hollow cylindrical configuration of opening in upper end, and the lower end of pipe bowl 31 supports first and supports edge
101, the upper end of pipe bowl 31 supports second and supports edge 102, so that pipe bowl 31 is fixed in outer tube 10.The inner cavity structure of pipe bowl 31
At the atomization chamber 311 for loading smokeable substance, the bottom of pipe bowl 31 is provided at least one venthole 312, and venthole 312 divides
It is not connected with the second air inlet 2141 and atomization chamber 311.
Second heating member 32 is electrically connected with power supply device 200, and in present embodiment, pipe bowl 31 is made of ceramic materials,
Second heating member 32 is to be sintered in the intracorporal heater strip of 31 wall of pipe bowl.It is to be appreciated that in other unshowned embodiments,
Pipe bowl 31 can also be made of metal material.In addition, in addition to pipe bowl 31 is set wall body inside and outside, the second heating member 32 can be with
It is arranged on the outer peripheral surface of pipe bowl, alternatively, the second heating member 32 can be set on the inner peripheral surface of pipe bowl 31, alternatively, second adds
Warmware 32 can be set in the inner cavity of pipe bowl 31, and need to only meet the second heating member 32 can heat smoke object by pipe bowl 31
Matter, or directly heat smokeable substance and generate smog to be atomized smokeable substance.When pipe bowl 31 is made of metal material,
To insulate between pipe bowl 31 and the second heating member 32, can on the contact surface of pipe bowl 31 and the second heating member 32 and/or
Insulating layer is set on the outer peripheral surface of second heating member 32.
User aspirate when, extraneous gas enters in inlet channel 212 via the first air inlet 2131, then successively via
Second air inlet 2141 and venthole 312 reach in atomization chamber 311.Arrow direction is airflow direction in Fig. 1.External gas
Body is used to take out of the smog of smokeable substance generation with for users to use.In present embodiment, extraneous gas is air.It is understood that
Ground, in other unshowned embodiments, extraneous gas can also be fragrant gas or fragrant gas
The gas harmless to user with the mixture of air etc..Wherein, when outside air includes fragrant gas, can increase
The mouthfeel of smog further promotes the usage experience of user.
In use, the second heating member 32 heats under the electric drive effect of power supply device 200, heat transfer to pipe bowl 31,
So that smokeable substance generates smog under the heat effect of pipe bowl 31, smog is sucked under the drive of air-flow by user.The
One heating member 22 heats under the electric drive effect of power supply device 200, and heat transfer is to air-guide part 21, and air-guide part 21 is again by heat
Pass to helical tooth 211, a part of the outer peripheral surface of helical tooth 211 and air-guide part 21 as inlet channel 212, to flowing through
The extraneous gas of inlet channel 212 has heat effect.Since inlet channel 212 is spiral air passage, so that extraneous gas
It flows stroke to increase, extends the heated time for flowing through the extraneous gas of inlet channel 212, while increasing extraneous gas and spiral shell
Revolve the contact area of tooth 211, extraneous gas can be heated to higher temperature, when reaching in atomization chamber 311, be provided with
The close temperature of atomization chamber 311 can generate more smog, improve mouth to reduce scattering and disappearing for smokeable substance heat
Sense.
Referring to Fig. 1, in order to promote air-tightness, pipe bowl component 30 further includes the lower end and first for being located in pipe bowl 31
The second seal 33 between edge 101 is supported, and is located in the upper end of pipe bowl 31 and third that second supports between edge 102 is close
Sealing 34 mentions so that being merely able to enter in atomization chamber 311 via venthole 312 via the gas that inlet channel 212 flows out
The utilization rate of gas in high inlet channel 212.In addition, under the interval of second seal 33 and third sealing element 34, housing
There are gaps between pipe 10 and pipe bowl 31, so that conduction of heat between the two greatly reduces, to reduce pipe bowl 31
Thermal loss it is also possible to prevent outer tube 10 excessively boiling hot, and then influences the use of user.It is to be appreciated that second seal
33 and third sealing element 34 can be made of silica gel or rubber material, herein with no restriction.
For the ease of user's suction, atomising device 100 of the invention further includes cigarette holder (not shown go out), and cigarette holder is passed through in both ends
Logical tubular structure, cigarette holder are mounted on the upper end of outer tube 10 and are connected with atomization chamber 311.
In present embodiment, outer tube 10 is made of heat-insulating heat-preserving material, so that in inlet channel 212 and pipe bowl 31
Heat is not easy to lose, while avoiding due to excessively high the case where may scalding the hand of the user hair of the temperature of outer tube 10
It is raw.The heat-insulating heat-preserving material can be any one in mica, high temperature resistant silica gel, high-temperature resistant rubber and PEK (polyether-ketone)
Kind.
Referring to Fig. 3, electronic cigarette of the invention further includes the first temperature sensor 24, second temperature sensor 35, is set to
Controller 40 in electronic cigarette and the display device 50 being arranged in outside electronic cigarette.Controller 40 respectively with power supply device 200,
First heating member 22, the second heating member 32, the first temperature sensor 24, second temperature sensor 35 and display device 50 are electrically
Connection.
First temperature sensor 24 is arranged on the first heating member 22, alternatively, being arranged close to the first heating member 22, the first temperature
Degree sensor 24 is used to detect the temperature of the first heating member 22 and feeds back to controller 40.The setting of second temperature sensor 35 is the
On two heating members 32, or close to the setting of the second heating member 32, second temperature sensor 35 is for detecting the second heating member 32
Temperature simultaneously feeds back to controller 40.In present embodiment, due to the temperature in the temperature and inlet channel 212 of the first heating member 22
It differs smaller, therefore, directly the temperature in inlet channel 212 is indicated with the temperature of the first heating member 22, similarly, due to second
The temperature of heating member 32 and the temperature difference in atomization chamber 311 are smaller, therefore, directly indicate mist with the temperature of the second heating member 32
Change the temperature in chamber 311.The temperature that first temperature sensor 24 detects and the temperature that second temperature sensor 35 detects are equal
It can be shown by display device 50 to user, so that user knows the temperature in temperature and atomization chamber 311 in inlet channel 212
Degree.The first preset value and the second preset value are provided in controller 40, first preset value and the second preset value can be respectively
311 temperature of 212 temperature of desired inlet channel and desired atomization chamber that user is manually entered, can also be that producer is preparatory respectively
212 temperature of inlet channel of the recommendation of storage and 311 temperature of atomization chamber of recommendation.First preset value and the second preset value equally may be used
To be shown to user by display device 50.In the inlet channel 212 that controller 50 can feed back the first temperature sensor 24
Temperature be compared with the first preset value, the temperature in atomization chamber 311 that second temperature sensor 34 is fed back is pre- with second
If value is compared, and adjusts power supply device 200 respectively to the heating power and electricity of the first heating member 22 according to comparison result
Source device 200 is atomized the heating power of the second heating member 32 so that the temperature in inlet channel 212 reaches the first preset value
Temperature in chamber 311 reaches the second preset value.
It is to be appreciated that in other unshowned embodiments, when the temperature and inlet channel 212 of the first heating member 22
Temperature difference it is larger when, then directly cannot indicate the temperature in inlet channel 212 with the temperature of the first heating member 22, need
The temperature for the first heating member 22 that one temperature sensor 24 will test obtains in inlet channel 212 after adding the first temperature-compensating
Temperature, and feed back to controller 40.Similarly, when the temperature difference of the temperature and atomization chamber 311 of the second heating member 32 is larger
When, then the temperature in atomization chamber 311 directly cannot be indicated with the temperature of the second heating member 32, need second temperature sensor 35 will
The temperature of the second heating member 32 detected feeds back to control plus the temperature in atomized chamber 311 after second temperature compensation
Device 40 processed.Wherein, the first temperature-compensating, second temperature compensation can be obtained by experiment, can also be obtained by theoretical calculation.
In present embodiment, the first preset value is equal to the second preset value, so that temperature and atomization chamber in inlet channel 212
Temperature in 311 reaches identical value, thereby may be ensured that via inlet channel 212 flow into atomization chamber 311 in gas temperature with
Temperature in atomization chamber 311 is identical, avoids because extraneous gas temperature is too low so that the heat loss of smokeable substance is excessive
It happens.
It is to be appreciated that in other unshowned embodiments, the first preset value can be made less than the second preset value,
In this way, the temperature in inlet channel 212 is less than the temperature in atomization chamber 311, the gas flow temperature flowed into atomization chamber 311 is low
In the temperature of smog, smoke cooling can be prevented from entering excessively boiling hot with the smog in the registered permanent residence.
It is to be appreciated that being preset in other unshowned embodiments it is also possible that the first preset value is greater than second
Value flows into the air-flow temperature in atomization chamber 311 in this way, the temperature in inlet channel 212 is greater than the temperature in atomization chamber 311
Degree be higher than smog temperature, air-flow pass through pyrogen when, heat effect can also be played to smokeable substance, this for pipe bowl
The heating of the discontiguous smokeable substance of 31 wall body is advantageous.
It therefore, can be to smokeable substance and extraneous gas by two heating members of setting and two temperature sensors
Heating state controlled respectively, to meet the diversified demand of user.Also, consider different heated media (smokes
Substance is different heated media with air-flow) heating rate it is different, the requirement to heating material is also different, therefore, setting two
A heating member, can be convenient allotment heating power, also can be convenient the suitable heating material of selection.
In present embodiment, electronic cigarette further includes the first control switch 60, Yi Jiyong for controlling the first heating member 22
In control the second heating member 32 the second control switch 70, the first control switch 60 respectively with controller 40 and the first heating member
22 are electrically connected, and the second control switch 70 is electrically connected with controller 40 and the second heating member 32 respectively.In this way, user may be used also
With according to the use needs of itself, control respectively the first heating member 22 on/off and the second heating member 32 on/off (that is,
By controlling the on/off of the first control switch 60, thus the electricity between the first heating member of ON/OFF 22 and power supply device 200
Road connection, by controlling the on/off of the second control switch 70, thus the second heating member of ON/OFF 32 and power supply device 200 it
Between circuit connection).For example, user, which can first pass through the first control switch 60 of closure, is connected 22 a period of time of the first heating member,
With pre-heating intaking channel 212, when user needs to aspirate, the second control switch 70 is reclosed to the second heating member 32 of conducting,
Because preheating, already has higher temperature into the gas in atomization chamber 311, it is possible to reduce in atomization chamber 311
Heat loss, also, the gas of heat can also assist heating smokeable substance, in this way, can produce more smog.
It is to be appreciated that being controlled respectively with first whether the work of the first temperature sensor 24, second temperature sensor 35
The on/off of switch 60, the on/off of the second control switch 70 are corresponding.By taking the first temperature sensor 24 as an example, when controller 40 is examined
Measure the first control switch 60 it is in the conductive state when, controller 40 controls the work of the first temperature sensor 24, so that the first temperature
The temperature that sensor 24 detects the first heating member 22 is spent, and feeds back to controller 40, controller 40 is by the first temperature sensor 24
The temperature detected is compared with the first preset value, and adjusts power supply device 200 to the first heating member 22 according to comparison result
Heating power so that the temperature in atomization chamber 311 reaches the first preset value;When controller 40 detects the first control switch 60
When being in an off state, controller 40 controls the first temperature sensor 24 and stops working.
In present embodiment, electronic cigarette further includes that user input apparatus 80 is used for for user's input control signal, and user is defeated
Enter device 80 and controller 40 is electrically connected.For example, user can input the first preset value and the by user input apparatus 80
Two preset values.
It should be pointed out that whether the first heating member 21 or the second heating member 32, with can be inputted per family by user
Device 80 select under heating mode and holding mode running parameter (running parameter include but is not limited to the first preset value,
The soaking time of second preset value, the soaking time of the first heating member 21 and the second heating member 32).Under heating mode, first adds
Warmware 21 is gradually heated up heating, until reaching the first preset value, the second heating member 32 is gradually heated up heating, until it is pre- to reach second
If value;Under holding mode, the soaking time of the first heating member 21 and the second heating member 32 is may be selected in user, that is, the first heating member
21 reach maintain after the first preset value the first preset value working time be the first heating member 21 soaking time, the second heating
Part 32 reach maintain after the second preset value the second preset value working time be the second heating member 32 soaking time.
It please refers to shown in Fig. 4, the workflow of electronic cigarette of the present invention are as follows:
Step S101, user input apparatus 80 receive the changing interface signal of user's input, and feed back to controller 40, control
Device 40 processed controls display device 50 according to changing interface signal and switches to set interface, then, enters step S102.For example, with
Family input unit 80 includes power button, "+" key and "-" key, and continuous 3 lower power buttons of quickly pressing can enter set interface;
Step S102, user input apparatus 80 receive the running parameter of user's input, and feed back to controller 40, then,
Enter step S103.For example, user can select the running parameter for needing to set by "+" key, then presses the confirmation of "-" key and need to set
Fixed running parameter, then pressing "+" key, perhaps "-" key adjusts the numerical value of running parameter finally, attonity 2s or continuously pressing
The lower power buttons of pressure 3 be the numerical value of the running parameter of confirmation setting (or by setting running parameter needed for the selection of "+" "-" key, so
Afterwards by power button confirmation selection, the size of running parameter is adjusted using "+" "-" key later).
Step S103, user input apparatus 80 receive the enabling signal of user's input, and feed back to controller 40, then,
Enter step S104.For example, long-pressing power button 3s is starting.
Step S104, controller 40 is after receiving enabling signal, according to the running parameter of the feedback of user input apparatus 80
It controls power supply device 200 and power output is carried out to selected heating member.In the present embodiment, it is fed back according to user input apparatus 80
Operating parameter control power supply device 200 to selected heating member carry out power output, specifically, controller 40 is according to running parameter
Control heating power and heating time of the power supply device 200 to selected heating member.
It can be seen from the above, user can select to add by the on/off of the first control switch 60 and the second control switch 70
Warmware.When the first control switch 60 is connected, and the second control switch 70 disconnects, selected heating member is the first heating member 21;When
One control switch 60 disconnects, and when the second control switch 70 is connected, selected heating member is the second heating member 32;When the first control switch
60 and second control switch 70 when being both turned on, selected heating member is the first heating member 21 and the second heating member 32.
First control switch 60 and the second control switch 70 can be physical button and be also possible to logic switch.When the first control
When system switch 60 and the second control switch 70 are physical buttons, user can directly press to the control of ON/OFF first
Switch 60 and the second control switch 70.
When the first control switch 60 and the second control switch 70 are logic switches, can control by the following method.
It please refers to shown in Fig. 5, by taking the control mode of the first heating member 21 as an example:
Step S201, user input apparatus 80 receives the first preset value set by user, and feeds back to controller 40, so
Afterwards, S202 is entered step.It is to be appreciated that set interface can be entered with S101, S102 through the above steps and set first in advance
If value.
Step S202, controller 40 judges the size relation of the first preset value and the first setting lower limit, when the first preset value
When the=the first setting lower limit, S203 is entered step, when the first preset value > first sets lower limit, enters step S204.First
Setting lower limit is stored in advance in controller 40, and the first setting lower limit refers to what user can set by user input apparatus 80
The minimum value of first preset value, for example, the first setting lower limit is 200 DEG C, then user can only be arranged when setting the first preset value
200 DEG C or more of temperature value.It can so guarantee under holding mode, the temperature of inlet channel 212 is unlikely to too low, thus
It can prevent air-flow from causing the heat loss of smokeable substance too many because temperature is too low.It is to be appreciated that for the second heating member
For 32, pre-stored in controller 40 is the second setting lower limit, and the second setting lower limit refers to that user is inputted by user and fills
The minimum value for the second preset value that 80 can set is set, for example, the second setting lower limit is 200 DEG C, then user is pre- in setting second
If 200 DEG C or more of temperature value can only be arranged when value.It can so guarantee under holding mode, the temperature in atomization chamber 311
It is unlikely to too low, so as to ensure that the heated volatilization of smokeable substance generates smog.
Step S203, display device 50 show " whether closing the first heating member 21 ", then, enter step S205.It can be with
Understand ground, in other unshowned embodiments, can also by the other modes such as bright light, vibration or voice broadcast to
Convey " whether closing the first heating member 21 " this information in family.
Step S204, controller 40 control the conducting of the first control switch 60.
Step S205, user input apparatus 80 receive the control signal of user's input, and feed back to controller 40, then,
Enter step S206.For example, user controls signal by "+" "-" key input, pressing "+" indicates that confirmation is closed, presses "-" table
Show that confirmation is not closed.
Step S206, controller 40 judge to control whether signal is that confirmation shutdown signal enters when the judgment result is no
Step S204 enters step S207 when the judgment result is yes.
Step S207, controller 40 control the first control switch 60 and disconnect.
It is to be appreciated that the control for the second heating member 32, only need to be substituted for the second heating member for the first heating member 21
32, the first preset value is substituted for the second preset value, and the first setting lower limit is substituted for the second setting lower limit, and the first control switch 60 is replaced
Change the second control switch 70 into, details are not described herein again.
Atomising device 100 of the invention can carry out the gas entered in atomization chamber 311 via inlet channel 212
Preheating, to reduce scattering and disappearing for smokeable substance heat, to generate more amount of smoke.
Electronic cigarette provided by the invention, because of its technical characteristic whole with above-mentioned atomising device 100, therefore have with it is above-mentioned
The identical technical effect of atomising device 100.Meanwhile electronic cigarette provided by the invention, the first heating member 22 and the second heating member
32 on/off, heating temperature and heating mode can with can be selected and be adjusted according to the actual demand of oneself per family
To meet the diversified demand of user.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff
Various changes and amendments can be carried out without departing from the scope of the present invention completely.The technical scope of this invention is not
The content being confined on specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.