Patent Publication Number: US-2023134064-A1

Title: Electronic atomizer

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is filed on the basis of Chinese patent application No. 202111286387.8 filed Nov. 2, 2021, and claims priority of the Chinese patent application, the entire contents of which are incorporated herein by reference. 
     TECHNICAL FIELD 
     The present disclosure relates to the field of electronic cigarettes, and more particularly, to an electronic atomizer. 
     BACKGROUND 
     An electronic cigarette is an electronic product that simulates a cigarette, and has the same appearance, smoke, taste and feeling as the cigarette. The electronic cigarette is a product that converts nicotine into steam by atomization for a user to smoke. In recent years, with more and more people begin to accept the electronic cigarette, people have higher and higher requirements for a quality of the electronic cigarette. 
     At present, an electronic atomizer in some electronic cigarettes comprises a housing, an atomizing assembly and a power supply assembly, and the atomizing assembly and the power supply assembly are located in the housing. The housing is provided with a smoking port and a gas inlet, the atomizing assembly is capable of atomizing E-liquid, the power supply assembly is relatively close to the gas inlet, and there is a gap between the power supply assembly and an inner wall of the housing. Outside air enters the housing from the gas inlet, then flows through the atomizing assembly after passing through the gap between the power supply assembly and the inner wall of the housing, and flows out from the smoking port after being mixed with the atomized E-liquid. However, the E-liquid may be subjected to a situation that the E-liquid leaks from the gap and eventually flows to the gas inlet of the electronic atomizer to block the gas inlet, which causes unsmooth gas flow circulation inside the electronic atomizer and unstable suction resistance. 
     SUMMARY 
     The present disclosure aims to solve at least one of the technical problems in related arts to some extent. Therefore, the present disclosure provides an electronic atomizer, which can effectively prevent a situation that E-liquid leaks from a gap between a power supply assembly and a housing to a gas inlet of the electronic atomizer, so that gas flow circulation inside the electronic atomizer is smooth, and suction resistance is stable. 
     An embodiment of the present disclosure provides an electronic atomizer, which comprises: a housing internally provided with an E-liquid storage cavity and an atomization gas channel, wherein the E-liquid storage cavity is communicated with the atomization gas channel, and the housing is provided with a gas inlet and a smoking port; 
     an atomizing assembly arranged in the housing and communicated with the atomization gas channel, wherein the atomizing assembly is used for atomizing E-liquid in the E-liquid storage cavity; 
     a power supply assembly arranged in the housing, wherein the power supply assembly is electrically connected with the atomizing assembly; and 
     a first E-liquid adsorbing member arranged between the power supply assembly and an inner wall of the housing, wherein the first E-liquid adsorbing member is provided with an air channel; and 
     the gas inlet, the air channel, the atomization gas channel and the smoking port are sequentially communicated to form at least a part of smoking flow channel. 
     The electronic atomizer provided according to the embodiment of the present disclosure at least has the following beneficial effects: according to some embodiments of the present disclosure, the electronic atomizer comprises the housing, the housing is internally provided with the E-liquid storage cavity, the atomizing assembly, the atomization gas channel and the power supply assembly, the first E-liquid adsorbing member is arranged between the power supply assembly and the housing, the first E-liquid adsorbing member is provided with the air channel, the housing is provided with the gas inlet and the smoking port, the gas inlet, the air channel, the atomization gas channel and the smoking port are sequentially communicated to form at least a part of smoking flow channel, and while the first E-liquid absorbing member eliminates an assembly gap between a battery cell and the housing, the first E-liquid adsorbing member absorbs the E-liquid when the E-liquid leaks from the atomizer and flows to the gap between the power supply assembly and the housing, which effectively avoids a situation that the leaked E-liquid eventually flows to the gas inlet of the electronic atomizer to block the gas inlet, thus causing unsmooth gas flow circulation inside the electronic atomizer and unstable suction resistance. 
     According to some embodiments of the present disclosure, the housing further comprises an E-liquid sealing structure arranged in the housing, the E-liquid storage cavity is defined in the E-liquid sealing structure, and the atomization gas channel penetrates through the E-liquid sealing structure to be communicated with the smoking port and the air channel respectively. 
     According to some embodiments of the present disclosure, the E-liquid sealing structure comprises a first sealing pipe, a first sealing member, a second sealing member and an atomization gas pipe, the atomization gas channel is defined in the atomization gas pipe, the first sealing pipe is sheathed on the atomization gas pipe, the first sealing member is located at one end of the E-liquid sealing structure and the first sealing member is connected with the first sealing pipe and the atomization gas pipe respectively, the second sealing member is located at the other end of the E-liquid sealing structure and the second sealing member is connected with the first sealing pipe and the atomization gas pipe respectively to define the E-liquid storage cavity, the atomization gas pipe is provided with an E-liquid inlet, and the E-liquid inlet is communicated with the atomization gas channel and the E-liquid storage cavity respectively. 
     According to some embodiments of the present disclosure, the atomizing assembly comprises a cotton core and a heating member, the cotton core is arranged in the atomization gas pipe and corresponds to the E-liquid inlet, and the heating member is arranged in the atomization gas pipe and is capable of heating the cotton core. 
     According to some embodiments of the present disclosure, the first sealing member is provided with a mounting base, the mounting base is provided with a vent hole for communicating the air channel with the atomization gas channel, a heating member pin penetrates through the mounting base, one end of the heating member pin is connected with the power supply assembly, and the other end of the heating member pin is connected with the heating member. 
     According to some embodiments of the present disclosure, a second E-liquid adsorbing member is arranged between the E-liquid sealing structure and the power supply assembly. 
     According to some embodiments of the present disclosure, the housing is also internally provided with a third E-liquid adsorbing member, and the third E-liquid adsorbing member is located between the atomization gas channel and the smoking port. 
     According to some embodiments of the present disclosure, the housing is provided with an opening allowing the power supply assembly to pass in and out, the housing is provided with a bottom cover, and the bottom cover is capable of opening or closing the opening. 
     According to some embodiments of the present disclosure, the smoking flow channel is internally provided with a gas pressure sensor, a position of the gas pressure sensor corresponds to a position of the gas inlet, and the gas pressure sensor is connected with the atomizing assembly to control the atomizing assembly to operate. 
     According to some embodiments of the present disclosure, the housing is also internally provided with a second sealing pipe, the second sealing pipe is sheathed on the power supply assembly, and the first E-liquid adsorbing member is arranged between the power supply assembly and an inner wall of the second sealing pipe. 
     The additional aspects and advantages of the present disclosure will be partially given in the following description, and will be partially apparent from the following description, or will be learned through the practice of the present disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a front view of an electronic atomizer provided by an embodiment of the present disclosure; 
         FIG.  2    is a bottom view of  FIG.  1   ; 
         FIG.  3    is a top view of  FIG.  1   ; 
         FIG.  4    is a cross-sectional view of A-A in  FIG.  1   ; and 
         FIG.  5    is an explosive view of  FIG.  1   . 
     
    
    
     Reference numerals:  100  refers to housing,  101  refers to E-liquid storage cavity,  102  refers to atomizing assembly,  102 A refers to mounting base,  102 B refers to cotton core,  102 C refers to heating member,  102 D refers to glass fiber pipe,  102 E refers to core pipe silica gel,  102 F refers to core pipe,  103  refers to power supply assembly,  104  refers to first E-liquid absorbing member,  104 A refers to air channel,  105  refers to first sealing member,  106  refers to first sealing pipe,  107  refers to second sealing pipe,  108  refers to second E-liquid absorbing member,  109  refers to heating member pin,  110  refers to second sealing member,  111  refers to third E-liquid absorbing member,  112  refers to bottom cover,  113  refers to gas inlet,  114  refers to gas pressure sensor,  115  refers to sensor silica gel sleeve,  116  refers to smoking port,  117  refers to suction nozzle plug, and  120  refers to atomization gas pipe. 
     DETAILED DESCRIPTION 
     The embodiments of the present disclosure are described in detail hereinafter, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals throughout the drawings denote the same or similar elements or elements having the same or similar functions. The embodiments described hereinafter with reference to the drawings are exemplary, and are only intended to explain the present disclosure, but should not be understood as limiting the present disclosure. 
     In the description of the present disclosure, it should be understood that the orientations or positional relationships indicated by the terms such as “upper”, “lower”, “front”, “rear”, “left”, “right” and the like, refer to the orientations or positional relationships shown in the drawings, which are only intended to facilitate describing the present disclosure and simplifying the description, and do not indicate or imply that the indicated devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. 
     In the description of the present disclosure, the term “several” refers to being one or more, the term “multiple” refers to being more than two, and the terms such as “greater than”, “less than”, “more than” and the like are understood as not including this number, while the terms such as “above”, “below”, “within” and the like are understood as including this number. If there are the descriptions of “first” and “second”, it is only for the purpose of distinguishing technical features, and should not be understood as indicating or implying relative importance, implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features. 
     In the description of the present disclosure, unless otherwise clearly defined, the terms such as “setting”, “mounting”, “connection” and the like should be understood broadly, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present disclosure in combination with the specific contents of the technical solutions. 
     It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present disclosure will be described in detail hereinafter with reference to the drawings and the embodiments. 
     With reference to  FIG.  1   ,  FIG.  2    and  FIG.  3   , in some embodiments of the present disclosure, a shape of a housing  100  of an electronic atomizer may be a cylinder, and the whole housing  100  has a thick part and a thin part, wherein the thin part is provided with a smoking port  116 , which is convenient for a user to smoke. 
     It should be noted that the housing  100  of the electronic atomizer is not limited to the cylinder, but may also be a square, a triangle and other shapes. 
     With reference to  FIG.  4    and  FIG.  5   , in some embodiments of the present disclosure, an electronic atomizer comprises a housing  100 , wherein the housing  100  is internally provided with an E-liquid storage cavity  101  and an atomization gas channel, the E-liquid storage cavity  101  is communicated with the atomization gas channel, and the housing  100  is provided with a gas inlet  113  and a smoking port  116 ; an atomizing assembly  102  arranged in the housing  100  and communicated with the atomization gas channel, wherein the atomizing assembly  102  is used for atomizing E-liquid in the E-liquid storage cavity  101 ; a power supply assembly  103  arranged in the housing  100 , wherein the power supply assembly  103  is electrically connected with the atomizing assembly  102 ; and a first E-liquid adsorbing member  104  arranged between the power supply assembly  103  and an inner wall of the housing  100 , wherein the first E-liquid adsorbing member  104  is provided with an air channel  104 A. The gas inlet  113 , the air channel  104 A, the atomization gas channel and the smoking port  116  are sequentially communicated to form at least a part of smoking flow channel. 
     It should be noted that when the whole electronic atomizer is operated, a gas flow flows in the whole smoking flow channel. Specifically, the gas flow enters from the gas inlet  113 , sequentially passes through the air channel  104 A, the atomization gas channel and the smoking port  116 , and eventually flows out from the smoking port  116 . When passing through the atomization gas channel, the gas flow is mixed with the atomized E-liquid atomized by the atomizing assembly  102 , flows together with the atomized E-liquid from the atomization gas channel to the smoking port  116 , and eventually flows out from the smoking port  116 . The smoking flow channel should be kept smooth all the time during flowing of the gas flow. 
     It should be noted that the first E-liquid absorbing member  104  is arranged between the power supply assembly  103  and the inner wall of the housing  100 , and the first E-liquid absorbing member  104  may eliminate an assembly gap between the power supply assembly  103  and the housing  100 , which prevents the power supply assembly  103  from shaking. Meanwhile, when the E-liquid leaks from the atomizer and flows to the gap between the power supply assembly  103  and the housing  100 , the first E-liquid absorbing member  104  absorbs the E-liquid, which effectively avoids a situation that the leaked E-liquid eventually flows to the gas inlet  113  of the electronic atomizer to block the gas inlet  113 , thus causing unsmooth gas flow circulation inside the electronic atomizer and unstable suction resistance. 
     It should be noted that the smoking port  116  is also provided with a suction nozzle plug  117 , the suction nozzle plug  117  may be inserted in or pulled out relative to the smoking port  116 , and the suction nozzle plug  117  arranged on the smoking port  116  may avoid dust from entering the smoking port  116  when not in use, thus keeping the smoking port  116  clean. 
     With reference to  FIG.  4    and  FIG.  5   , in some embodiments of the present disclosure, the housing  100  further comprises an E-liquid sealing structure arranged in the housing  100 , the E-liquid storage cavity  101  is defined in the E-liquid sealing structure, and the atomization gas channel penetrates through the E-liquid sealing structure to be communicated with the smoking port  116  and the air channel  104 A respectively. 
     Specifically, the E-liquid sealing structure above may be a pipe attached to the housing  100  and internally provided with an independent space. The internal space is the E-liquid storage cavity  101 , and a shape and a material of the pipe are not limited. The atomization gas channel penetrates through the whole E-liquid sealing structure, so that the E-liquid storage cavity  101  is communicated with the smoking flow channel. Defining the E-liquid storage cavity  101  in the housing  100  separately by using the E-liquid sealing structure is beneficial for sealing the E-liquid, thus preventing the E-liquid in the E-liquid storage cavity  101  from leaking. Arranging the atomization gas channel in the E-liquid storage cavity  101  can save space, thus making a structure of the electronic atomizer more compact. 
     It should be noted that the atomization gas channel may also be arranged outside the E-liquid storage cavity  101 , and two ends of the atomization gas channel arranged outside the E-liquid storage cavity  101  should also be communicated with the smoking port  116  and the air channel  104 A respectively. 
     With reference to  FIG.  4    and  FIG.  5   , in some embodiments of the present disclosure, the E-liquid sealing structure comprises a first sealing pipe  106 , a first sealing member  105 , a second sealing member  110  and an atomization gas pipe  120 . The atomization gas channel is defined in the atomization gas pipe  120 , the first sealing pipe  106  is sheathed on the atomization gas pipe  120 , the first sealing member  105  is located at one end of the E-liquid sealing structure and the first sealing member  105  is connected with the first sealing pipe  106  and the atomization gas pipe  120  respectively, the second sealing member  110  is located at the other end of the E-liquid sealing structure and the second sealing member  110  is connected with the first sealing pipe  106  and the atomization gas pipe  120  respectively to define the E-liquid storage cavity  101 . The atomization gas pipe  120  is provided with an E-liquid inlet, and the E-liquid inlet is communicated with the atomization gas channel and the E-liquid storage cavity  101  respectively. 
     Specifically, the E-liquid sealing structure comprises the atomization gas channel formed inside the atomization gas pipe  120 , the first sealing pipe  106  is sheathed outside the atomization gas pipe  120 , and there is a certain space between the first sealing pipe  106  and the atomization gas pipe  120 . The E-liquid storage cavity  101  is defined by the first sealing member  105 , the second sealing member  110  and the first sealing pipe  106 , the atomization gas pipe  120  inside the E-liquid storage cavity  101  is provided with the E-liquid inlet, and the E-liquid inlet communicates the atomization gas channel with the E-liquid storage cavity  101 . The first sealing member  105  and the second sealing member  110  may be made of silica gel materials, and the sealing members made of the silica gel materials may seal the E-liquid in the E-liquid storage cavity  101  more easily, so that a sealing property of the E-liquid storage cavity  101  is better. The first sealing pipe  106  may be made of any E-liquid impermeable material, and a material of the atomization gas pipe  120  needs to be E-liquid impermeable and high-temperature resistant. 
     It should be noted that the E-liquid inlet may be arranged at a lower portion of the atomization gas pipe  120 , and when there is less E-liquid in the E-liquid storage cavity  101 , the E-liquid still easily enters the E-liquid inlet located at the lower portion of the atomization gas pipe  120 . 
     With reference to  FIG.  4    and  FIG.  5   , in some embodiments of the present disclosure, the atomizing assembly  102  comprises a cotton core  102 B and a heating member  102 C. The cotton core  102 B is arranged in the atomization gas pipe  120  and corresponds to the E-liquid inlet, and the heating member  102 C is arranged in the atomization gas pipe  120  and is capable of heating the cotton core  102 B. 
     Specifically, the atomizing assembly  102  comprises the cotton core  102 B and the heating member  102 C. The cotton core  102 B is externally sheathed with a core pipe  102 F, the core pipe  102 F is connected with core pipe silica gel  102 E, and the core pipe silica gel  102 E is connected with a glass fiber pipe  102 D, which means that the core pipe  102 F, the core pipe silica gel  102 E and the glass fiber pipe  102 D are sequentially connected to form the atomization gas pipe  120 . The E-liquid inlet is arranged on the core pipe  102 F, the cotton core  102 B is arranged at a position corresponding to the E-liquid inlet in the core pipe  102 F, and the E-liquid in the E-liquid storage cavity  101  may directly enter the cotton core  102 B through the E-liquid inlet. The heating member  102 C is attached to the cotton core  102 B, and the heating member  102 C heats the cotton core  102 B to atomize the E-liquid entering the cotton core  102 B. The atomized E-liquid is mixed with the gas flow entering from the gas inlet  113  and flowing through the air channel  104 A, and the atomized E-liquid after mixing flows from the atomization gas pipe  120  to the smoking port  116 , and eventually flows out from the smoking port  116 . 
     It should be noted that the core pipe  102 F is made of a high-temperature resistant material, which prevents the heated cotton core  102 B from damaging the core pipe  102 F, and the core pipe  102 F and the glass fiber pipe  102 D are connected by using the core pipe silica gel  102 E, thus having a better airtightness. Meanwhile, the glass fiber pipe  102 D has the characteristics of light weight and high heat resistance, so as to prevent the atomized E-liquid generated by heating from being damaged. Forming the atomization gas pipe  120  with a light-weight material can also reduce a weight of the electronic atomizer, thus improving experience of a user. 
     With reference to  FIG.  4    and  FIG.  5   , in some embodiments of the present disclosure, the first sealing member  105  is provided with a mounting base  102 A. The mounting base  102 A is provided with a vent hole for communicating the air channel  104 A with the atomization gas channel, and a heating member pin  109  penetrates through the mounting base  102 A. One end of the heating member pin  109  is connected with the power supply assembly  103 , and the other end of the heating member pin  109  is connected with the heating member  102 C. 
     It should be noted that the heating member pin  109  comprises a first heating member pin and a second heating member pin. One end of the first heating member pin is connected with a positive electrode of the power supply assembly  103 , and the other end of the first heating member pin is connected with the heating member  102 C in the atomizing assembly  102 . One end of the second heating member pin is connected with a negative electrode of the power supply assembly  103 , and the other end of the second heating member pin is connected with the heating member in the atomizing assembly  102 . The heating member pin  109  connects the power supply assembly  103  with the heating member  102 C in series to form a series circuit. It should be noted that the series circuit above is internally provided with a switch for controlling the circuit to form an on or off circuit. 
     It should be noted that in some embodiments, the atomizing assembly  102  is mounted on the mounting base  102 A and arranged in the atomization gas channel. The mounting base  102 A is provided with the vent hole, and the vent hole may communicate the atomization gas channel and the air channel  104 A. The heating member pin  109  penetrating through the mounting base  102 A supplies power to the heating member  102 C in the atomizing assembly  102 . The vent hole is directly arranged in the mounting base  102 A, without needing to separately arrange a structure for communicating the atomization gas channel with the air channel  104 A. The heating member pin  109  directly penetrates through the mounting base  102 A, so that the heating member  102 C in the atomizing assembly  102  is electrically connected with the power supply assembly  103  directly through the mounting base  102 A, without needing to arrange an additional structure for connecting the heating member  102 C with the power supply assembly  103 . The vent hole and the heating member pin  109  above are directly arranged on the mounting base  102 A, which saves space and also simplifies a structure of the electronic atomizer. 
     With reference to  FIG.  4    and  FIG.  5   , in some embodiments of the present disclosure, a second E-liquid adsorbing member  108  is arranged between the E-liquid sealing structure and the power supply assembly  103 . 
     Specifically, when the E-liquid in the E-liquid sealing structure leaks out, the second E-liquid adsorbing member  108  arranged between the power supply assembly  103  and the E-liquid sealing structure may absorb the leaked E-liquid, thus preventing the leaked E-liquid from continuously flowing to the power supply assembly  103  and eventually flowing to the gas inlet  113 , and further preventing the leaked E-liquid from blocking the gas inlet  113 . 
     With reference to  FIG.  4    and  FIG.  5   , in some embodiments of the present disclosure, the housing  100  is also internally provided with a third E-liquid adsorbing member  111 , and the third E-liquid adsorbing member  111  is located between the atomization gas channel and the smoking port  116 . 
     It should be noted that the atomized E-liquid after atomization may be insufficiently atomized, and the third E-liquid adsorbing member  111  between the atomization gas channel and the smoking port  116  may absorb the E-liquid in the insufficiently atomized E-liquid to the third E-liquid adsorbing member  111 , which prevents the insufficiently atomized E-liquid from entering the smoking port  116  to be sucked into a mouth of the user, thus improving experience of the user. 
     It should be noted that the first E-liquid absorbing member  104 , the second E-liquid absorbing member  108  and the third E-liquid absorbing member  111  above are E-liquid absorbing members such as E-liquid absorbing cotton or E-liquid absorbing paper. 
     With reference to  FIG.  4    and  FIG.  5   , in some embodiments of the present disclosure, the housing  100  is provided with an opening allowing the power supply assembly  103  to pass in and out, the housing  100  is provided with a bottom cover  112 , and the bottom cover  112  is capable of opening or closing the opening. 
     It should be noted that connection between the bottom cover  112  and the opening is detachable, the bottom cover  112  is connected and fixed with the opening through a thread, and the bottom cover  112  may be disassembled and mounted by direct rotation through hands. When the power supply assembly  103  needs to be replaced, the bottom cover  112  is directly rotated and disassembled to open the opening, and after the power supply assembly  103  is mounted into the housing  100  from the opening, the bottom cover  112  is connected onto the opening by rotation to close the opening. By matching the opening with the bottom cover  112 , the power supply assembly  103  may be replaced more conveniently. 
     With reference to  FIG.  4    and  FIG.  5   , in some embodiments of the present disclosure, the smoking flow channel is internally provided with a gas pressure sensor  4 , a position of the gas pressure sensor  114  corresponds to a position of the gas inlet  113 , and the gas pressure sensor  114  is connected with the atomizing assembly  102  to control the atomizing assembly  102  to operate. 
     It should be noted that the gas pressure sensor  114 , the power supply assembly  103  and the heating member  102 C are connected in series to form a series circuit. The gas pressure sensor  114  is integrated with a circuit switch and a current control module, wherein the circuit switch may be automatically switched on and off according to a gas pressure sensed by the gas pressure sensor  114 , and the current control module can control a magnitude of a current in the circuit. 
     It should be noted that the gas pressure sensor  114  is arranged at a position corresponding to the gas inlet  113 . When the user smokes through the smoking port  116 , the gas pressure sensor  114  detects the gas pressure at the gas inlet  113  in real time. When the gas pressure reaches different preset thresholds, the gas pressure sensor  114  controls the atomizing assembly  102  to atomize with different powers through the current control module. 
     Specifically, the gas pressure is detected through the gas pressure sensor  114 , and false triggering may be prevented by controlling switching on and off of the atomizing assembly  102  according to the gas pressure. Meanwhile, an operating power of the atomizing assembly  102  may be controlled according to different reached thresholds of the gas pressure detected by the gas pressure sensor  114 , so that the most appropriate volume of atomized E-liquid may be provided for the user, thus improving experience of the user. 
     It should be noted that in some embodiments of the present disclosure, a sensor silica gel sleeve  115  is sheathed outside the gas pressure sensor  114 , and the sensor silica gel sleeve  115  is used for fixing and protecting the gas pressure sensor  114 . 
     With reference to  FIG.  4    and  FIG.  5   , in some embodiments of the present disclosure, the housing  100  is also internally provided with a second sealing pipe  107 , the second sealing pipe  107  is sheathed on the power supply assembly  103 , and the first E-liquid adsorbing member is arranged between the power supply assembly  103  and an inner wall of the second sealing pipe  107 . 
     It should be noted that sealing the power supply assembly  103  in the second sealing pipe  107  has a better independent sealing performance than directly mounting the power supply assembly  103  in the housing  100 , which is more beneficial for maintaining a stability of suction resistance of the whole electronic atomizer. 
     The preferred embodiments of the present disclosure are described above with reference to the drawings, but are not intended to limit the scope of the present disclosure. Any modification, equivalent substitution and improvement made by those skilled in the art without departing from the scope and spirit of the present disclosure should be included within the scope of the present disclosure.