Abstract:
An electronic cigarette, comprising a casing and an electrode assembly disposed therein; the electrode assembly comprising an outer electrode ( 30 ) and an inner electrode ( 40 ), which are insulated from each other; outer electrode ( 30 ) being provided with a first through-hole ( 312 ); inner electrode ( 40 ) being provided with a second through-hole ( 412 ); first through-hole ( 312 ) and second through-hole ( 412 ) communicating to form the gas flow communication channel of the electronic cigarette. The electronic cigarette causes gas to flow directly from the first through-hole ( 312 ) to the second through-hole ( 412 ), thus shortening the flow path of the gas, making gas flow changes more smoothly, and reducing noise when smoking, improving user experience.

Description:
TECHNICAL FIELD 
       [0001]    The present application relates to the technical field of electrical heating, and more particularly, relates to an electronic cigarette. 
       BACKGROUND 
       [0002]    As a hobby, smoking is very popular with people, especially men. However, tar in cigarette is harmful to human health, and dozens of compositions thereof are carcinogens. Besides, secondhand smoke does a great harm to non-smokers. Therefore, there is a regulation to prohibit smoking in most of public places. However, it is very difficult for a smoker not to smoke. Accordingly, electronic cigarettes, used as substitutes for conventional tobaccos, have been widely used. 
         [0003]    As shown in  FIG. 1 , in an existing electronic cigarette, an inlet channel is defined in a casing of the electronic cigarette. External gas enters the electronic cigarette through the inlet channel, further flows into a recess defined at the bottom end of an upper electrode, and finally flows into atomization channel and brings atomized smoke to the suction nozzle for the smoker to suck in. The arrow direction shown in  FIG. 1  directs to a gas flowing direction. It can be seen from the figure that, after the external gas enters the electronic cigarette, the gas needs to make a couple of 90 degree turns before entering the atomization channel. In this way, the gas flow changes strongly, and the flow path of the gas is long since the gas needs to flow from the inlet channel to the bottom end of the upper electrode. Besides, a lot of noises may be produced when the smoker is smoking, and thus the user experience is affected. 
       BRIEF SUMMARY 
       [0004]    The objective of the present application is to provide an electronic cigarette which can effectively reduce noises when smoking and improve user experience, aiming at the drawbacks in the prior art that the flow path of the gas is long, and a lot of noises may be produced. 
         [0005]    In accordance with one aspect of the present application, an electronic cigarette is provided, which comprises a casing and an electrode assembly disposed therein; the electrode assembly comprising an outer electrode and an inner electrode which are insulated from each other; wherein the outer electrode is provided a first through-hole, and the inner electrode is provided with a second through-hole; the first through-hole and the second through-hole are communicated with each other to form a gas flow communication channel of the electronic cigarette. 
         [0006]    In the electronic cigarette of the present application, the casing includes an atomization sleeve and a battery sleeve; an abutment joint between the atomization sleeve and the battery sleeve forms an inlet channel allowing the gas to flow into the electronic cigarette. 
         [0007]    In the electronic cigarette of the present application, the outer electrode includes an external thread sleeve and an internal thread sleeve which are connected to each other by a threaded connection; the first through-hole is defined on the external thread sleeve. 
         [0008]    In the electronic cigarette of the present application, the gas flow communication channel formed by the first through-hole and the second through-hole is in shape of an arc. 
         [0009]    In the electronic cigarette of the present application, the gas flow communication channel formed by the first through-hole and the second through-hole is linear, and an angle between the gas flow communication channel and an axial direction of the casing is less than 90°. 
         [0010]    In the electronic cigarette of the present application, the number of the first through-holes is less than the number of the second through-holes. 
         [0011]    In the electronic cigarette of the present application, the inner electrode includes an upper electrode and a lower electrode; the second through-hole is defined on a side wall of the upper electrode or the lower electrode. 
         [0012]    In the electronic cigarette of the present application, the upper electrode includes a first barrel and a second barrel, wherein the second barrel extends from an end portion of the first barrel; an inner diameter of the second barrel is less than an inner diameter of the first barrel; the second through-hole is defined on the side wall of the first barrel. 
         [0013]    In the electronic cigarette of the present application, the external thread sleeve includes a main body and a connecting portion, the main body is sleeved in the atomization sleeve; an external thread is formed on the connecting portion; the first through-hole is defined at a joint between the connecting portion and the main body. 
         [0014]    In the electronic cigarette of the present application, the electronic cigarette further includes a first insulating ring disposed between the main body and the second barrel. 
         [0015]    In the electronic cigarette of the present application, the internal thread sleeve is sleeved in the battery sleeve; an internal thread is formed on the internal thread sleeve in a position corresponding to the external thread, and the internal thread and the external thread are connected to each other by a thread connection. 
         [0016]    In the electronic cigarette of the present application, at least two second through-holes are defined in the upper electrode, and the second through-holes are separated from each other. 
         [0017]    In the electronic cigarette of the present application, the second through-holes have a same diameter, and are separately defined on the side wall of the upper electrode at an equal interval. 
         [0018]    In the electronic cigarette of the present application, the lower electrode includes a third barrel and a fourth barrel, wherein the fourth barrel extends from an end portion of the third barrel; an inner diameter of the fourth barrel is less than an inner diameter of the third barrel; the second through-hole is defined on the side wall of the third barrel. 
         [0019]    In the electronic cigarette of the present application, the external thread sleeve includes a main body and a connecting portion; the main body is sleeved in the battery sleeve; an external thread is formed on the connecting portion; the first through-hole is defined at a joint between the connecting portion and the main body. 
         [0020]    In the electronic cigarette of the present application, the electronic cigarette further includes a second insulating ring disposed between the main body and the fourth barrel. 
         [0021]    In the electronic cigarette of the present application, the internal thread sleeve is sleeved in the battery sleeve; an internal thread is formed on the internal thread sleeve in a position corresponding to the external thread, and the internal thread and the external thread are connected to each other by a thread connection. 
         [0022]    In the electronic cigarette of the present application, at least two second through-holes are defined in the lower electrode, and the second through-holes are separated from each other. 
         [0023]    In the electronic cigarette of the present application, the second through-holes have a same diameter, and are separately defined on the side wall of the lower electrode at an equal interval. 
         [0024]    When implementing the electronic cigarette of the present application, the following advantageous can be achieved: by defining the first through-hole on the external electrode, defining the second through-hole on the inner electrode, and further making the first through-hole and the second through-hole communicated with each other to form a gas flow communication channel, the gas entering the electronic cigarette successively flows through the first through-hole and the second through-hole, and finally flows into the atomization channel. Since the second through-hole is defined on the side wall of the inner electrode, the flow path of the gas is shortened when the gas flows from the first through-hole to the second through-hole, the gas flow changes more smoothly, the noises produced in the smoking process are reduced, and thus the user experience is improved. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0025]    The present application will be further described with reference to the accompanying drawings and embodiments in the following, in the accompanying drawings: 
           [0026]      FIG. 1  illustrates a partially cutaway view of an electronic cigarette in the prior art; 
           [0027]      FIG. 2  illustrates a partially cutaway view of an electronic cigarette according to a first embodiment of the present application; 
           [0028]      FIG. 3  illustrates an upper electrode shown in  FIG. 2 ; 
           [0029]      FIG. 4  illustrates a partially cutaway view of an electronic cigarette according to a second embodiment of the present application; and 
           [0030]      FIG. 5  illustrates a lower electrode shown in  FIG. 4 . 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0031]    In order to make the technical features, the propose and the technical effect of the present application more clearly, the specific implemental means of the present application will now be described in detail with reference to the accompanying drawings. 
         [0032]    As shown in  FIG. 2 , a preferred embodiment of the present application provides an electronic cigarette, which comprises a casing (not shown here), and an electrode assembly (not shown here). In this case, the electrode assembly is disposed in the casing. 
         [0033]    An inlet channel  210  is defined in the casing, and the inlet channel  210  provided allows external gas to flow into the electronic cigarette. In this embodiment, the casing includes an atomization sleeve  10  and a battery sleeve  20 . That is, the casing of the electronic cigarette consists of the atomization sleeve  10  and the battery sleeve  20 . Further, the atomization sleeve  10  is not integrated with the battery sleeve  20 , such that an abutment joint between the atomization sleeve  10  and the battery sleeve  20  forms the inlet channel  210  allowing the gas to flow therein. 
         [0034]    The electrode assembly comprises an outer electrode  30  and an inner electrode  40  which are insulated from each other. The outer electrode  30  is provided with a first through-hole  312 , and the inner electrode  40  is provided with a second through-hole  412 . The first through-hole  312  and the second through-hole  412  are communicated with each other, allowing gas entering the electronic cigarette from the inlet channel  210  to flow through the electronic cigarette. That is, the first through-hole  312  and the second through-hole  412  are communicated with each other to form a gas communication channel inside the electronic cigarette. 
         [0035]    In the present embodiment, the outer electrode  30  includes an external thread sleeve  310  and an internal thread sleeve  320 . The external thread sleeve  310  is connected to the internal thread sleeve  320  by a threaded connection, and the first through-hole  312  is defined on the external thread sleeve  310 . 
         [0036]    The inner electrode  40  includes an upper electrode  410  and a lower electrode  420 , and the upper electrode  410  is abutted against the lower electrode  420 . In this embodiment, it is possible for the second through-hole  412  to be defined on a side wall of the upper electrode  410 . However, it is also possible for the second through-hole  412  to be defined on a side wall of the lower electrode  420 . 
         [0037]    In the electronic cigarette of the present application, the second through-hole  412  is defined on the side wall of the upper electrode  410  or of the lower electrode  420 ; besides, the inlet channel  210 , the first through-hole  312  and the second through-hole  412  are communicated with each other to form a gas flow communication channel. In this way, the gas entering the electronic cigarette successively flows through the first through-hole  312  and the second through-hole  412 , and finally flows into the atomization channel. Since the second through-hole  412  is defined on the side wall of the upper electrode  410  or of the lower electrode  420 , the flow path of the gas is shortened when the gas flows from the first through-hole  312  to the second through-hole  412 , the gas flow changes more smoothly, noises produced in the smoking process are reduced, and thus user experience is improved. 
         [0038]    A vertical distance from a central line of the second through-hole  412  to a central line of the first through-hole  312  is 0-1 cm. That is, the vertical distance from the central line of the second through-hole  412  to the a central line of the first through-hole  312  is less than a vertical distance from a bottom end of the upper electrode  410  or of the lower electrode  420  to the central line of the first through-hole  312 . In this way, when the gas flows from the first through-hole  312  to the hollow interior of the inner electrode  40 , the flow path is relative small. Furthermore, collisions with the atomizer and the battery rod are reduced, such that the gas flow changes more smoothly, the noises produced in the smoking process are reduced, and thus the user experience is improved. When the vertical distance from the first through-hole  312  to the second through-hole  412  is short, the gas flow communication channel formed by the first through-hole  312  and the second through-hole  412  is linear. That is, a connection line between a centre of the first through-hole  312  and a centre of the second through-hole  412  is a tilted straight line, and thus it is possible for the gas flow to directly flow from the first through-hole  312  to the second through-hole  412  via the tilted straight line. Besides, an angle between the tilted straight line and an axial direction of the casing is less than 90°. In a further embodiment, it is possible for the gas flow communication channel formed by the first through-hole  312  and the second through-hole  412  to be in shape of an arc. That is, when the vertical distance from the first through-hole  312  to the second through-hole  412  is relative long, an arc gas flow communication channel is formed by the first through-hole  312  and the second through-hole  412 . Preferably, the first through-hole  312  and the second through-hole  412  are correspondingly parallel to each other. In this way, the gas flow may directly flow from the first through-hole  312  to the second through-hole  412 , without vertically flowing through the gap formed between the inner electrode  40  and the outer electrode  30 . Therefore, the gas flow changes smoothly, the noises are reduced, and the user experience is improved. 
         [0039]    It could be understood that, the number of the second through-holes  412  defined on the inner electrode  40  is larger than that of the first through-hole  312  defined on the outer electrode  30 . In this way, a plurality of channels may be provided for the gas flow, and thus the gas flows smoothly in the electronic cigarette, and the noises are reduced. 
         [0040]    As shown in  FIGS. 2-3 , in the electronic cigarette provided in the first embodiment of the present application, the second through-hole  412  is defined on the side wall of the upper electrode  410 . The upper electrode  410  is substantially in shape of a hollow cylinder, and includes a first barrel  414  and a second barrel  416 . The second barrel  416  extends from an end portion of the first barrel  414 , and an inner diameter of the second barrel  416  is less than an inner diameter of the first barrel  414 , and the first barrel  414  and the second barrel  416  have a common axis. Specifically, the second through-hole  412  is defined on the side wall of the first barrel  414 . After the gas enters the electronic cigarette from the inlet channel  210 , the gas flows through the second through-hole  412  defined on the side wall of the upper electrode  410 , and the finally flows into the atomization channel. Compared with the electronic cigarette in the prior art, when using the electronic cigarette of the present application, there is no need for the gas to flow to the bottom end of the upper electrode  410 , such that the flow path of the gas is shortened, the drawback that the gas is collided with the atomizer or the battery rod is prevented from occurring, the noises produced in the smoking process are effectively reduced, and thus the user experience is improved. 
         [0041]    It could be understood that, one, two, or more second through-holes  412  may be defined in the present application. Therefore, the number of the second through-holes  412  is not limited here, and the number of the second through-holes  412  may be adjusted depending on the requirements to the amount of the smoke when manufacturing the electronic cigarette. In a case that two or more second through-holes  412  are defined in the upper electrode  410 , the two or more second through-holes  412  are separately defined on the side wall of the upper electrode  410 . In a specific case, the second through-holes  412  may be separated from each other at an equal interval or at an unequal interval. Preferably, a plurality of second through-holes  412  having a same diameter are separately defined on the side wall of the upper electrode  410  at an equal interval. 
         [0042]    The external thread sleeve  310  of the present application is substantially in shape of a hollow cylinder, and the upper electrode  410  is disposed inside the external thread sleeve  310 . The external thread sleeve  310  includes a main body  314 , a connecting portion  316 , a joint (not shown here) and a first through-hole  312 . In this case, the main body  314  is sleeved in the atomization sleeve  10  and is further abutted against the atomization sleeve  10 . That is, the external thread sleeve  310  is disposed between the atomization sleeve  10  and the upper electrode  410 . An external thread  3162  is formed on the connecting portion  316 , and the joint is formed between the main body  314  and the connecting portion  316 . The first through-hole  312  is defined at the joint. The electronic cigarette of the present application further includes a first insulating ring  80 . The main body  314  is connected to the second barrel  416  of the upper electrode  410  via the first insulating ring  80 , in such a way that the upper electrode  410  and the external thread sleeve  310  are fixedly connected to each other. 
         [0043]    The internal thread sleeve  320  is in shape of a hollow cylinder, and is further sleeved in the battery sleeve  20 . An internal thread  322  is formed on the internal thread sleeve  320  in a position corresponding to the external thread  3162 . Therefore, the internal thread  322  and the external thread  3162  are connected to each other by a thread connection, in such a way that the internal thread sleeve  320  and the external thread sleeve  310  are connected to each other. 
         [0044]    In the electronic cigarette of the present application, the second through-hole  412  is defined on the side wall of the upper electrode  410 . Besides, the inlet channel  210 , the first through-hole  312  and the second through-hole  412  are communicated with each other to form a gas flow communication channel. In this way, the gas entering the electronic cigarette successively flows through the first through-hole  312  and the second through-hole  412 , and finally flows into the atomization channel. Since the second through-hole  412  is defined on the side wall of the upper electrode  410 , the flow path of the gas is shortened when the gas flows from the first through-hole  312  to the second through-hole  412 , the gas flow changes more smoothly, the noises produced in the smoking process are reduced, and thus the user experience is improved. 
         [0045]    As shown in  FIGS. 4-5 , in the electronic cigarette provided in a second embodiment of the present application, the second through-hole  412  is defined on the side wall of the lower electrode  420 . In this case, the lower electrode  420  is substantially in shape of a hollow cylinder, and includes a third barrel  422  and a fourth barrel  424 . In this case, the fourth barrel  424  extends from an end portion of the third barrel  422 , and an inner diameter of the fourth barrel  424  is less than an inner diameter of the third barrel  422 , and the third barrel  422  and the fourth barrel  424  have a common axis. Specifically, the second through-hole  412  is defined on the side wall of the third barrel  422 . After the gas enters the electronic cigarette from the inlet channel  210 , the gas flows through the second through-hole  412  defined on the side wall of the lower electrode  420 , and the finally flows into the atomization channel. Compared with the prior art, when using the electronic cigarette of the present application, there is no need for the gas to flow to the bottom end of the lower electrode  420 , such that the flow path of the gas is shortened, the drawback that the gas is collided with the atomizer or the battery rod is prevented from occurring, the noises produced in the smoking process are effectively reduced, and thus the user experience is improved. 
         [0046]    It could be understood that, one, two, or more second through-holes  412  may be defined in the present application. Therefore, the number of the second through-holes  412  is not limited here, and the number of the second through-holes  412  may be adjusted depending on the requirements to the amount of the smoke when manufacturing the electronic cigarette. In a case that two or more second through-holes  412  are defined in the lower electrode  420 , the two or more second through-holes  412  are separately defined on the side wall of the lower electrode  420 . In a specific case, the second through-holes  412  may be separated from each other at an equal interval or at an unequal interval. Preferably, a plurality of second through-holes  412  having a same diameter are separately defined on the side wall of the lower electrode  420  at an equal interval. 
         [0047]    The external thread sleeve  310  of the present application is substantially in shape of a hollow cylinder, and the lower electrode  420  is disposed inside the external thread sleeve  310 . The external thread sleeve  310  includes a main body  314 , a connecting portion  316 , a joint (not shown here) and a first through-hole  312 . In this case, the main body  314  is sleeved in the battery sleeve  20  and is further abutted against the battery sleeve  20 . That is, the external thread sleeve  310  is disposed between the battery sleeve  20  and the lower electrode  420 . An external thread  3162  is formed on the connecting portion  316 , and the joint is formed between the main body  314  and the connecting portion  316 . The first through-hole  312  is defined at the joint. The electronic cigarette of the present application further includes a second insulating ring  100 . The main body  314  is connected to the forth barrel  424  of the lower electrode  420  via the second insulating ring  100 , in such a way that the lower electrode  420  and the external thread sleeve  310  are fixedly connected to each other. 
         [0048]    The internal thread sleeve  320  is in shape of a hollow cylinder, and is further sleeved in the atomization sleeve  10 . An internal thread  322  is formed on the internal thread sleeve  320  in a position corresponding to the external thread  3162 . Therefore, the internal thread  322  and the external thread  3162  are connected to each other by a thread connection, in such a way that the internal thread sleeve  320  and the external thread sleeve  310  are connected to each other. 
         [0049]    In the electronic cigarette of the present application, the second through-hole  412  is defined on the side wall of the lower electrode  420 . Besides, the inlet channel  210 , the first through-hole  312  and the second through-hole  412  are communicated with each other to form a gas flow communication channel. In this way, the gas entering the electronic cigarette successively flows through the first through-hole  312  and the second through-hole  412 , and finally flows into the atomization channel. Since the second through-hole  412  is defined on the side wall of the lower electrode  420 , the flow path of the gas is shortened when the gas flows from the first through-hole  312  to the second through-hole  412 , the gas flow changes more smoothly, the noises produced in the smoking process are reduced, and thus the user experience is improved. 
         [0050]    Although the present application is illustrated with the embodiments accompanying the drawings, the present application is not limited to the above-mentioned specific embodiments, and the above-mentioned embodiments are only for illustration, not for limitation. In the inspiration of the present application, those skilled in the art may make many modifications, without going beyond the purpose and the scope the claims intend to protect of the present application. All these belong to the protection of the present application.