Atomizer and electronic atomization device

Abstract

The utility model discloses an atomizer and an electronic atomization device. The atomizer comprises a pipe body, a support and an atomization core. The atomizing core comprises a liquid guide piece and a heating body; the periphery of the heating body is sleeved with the liquid guide part, the periphery of the liquid guide part is sleeved with the support, and the periphery of the support is sleeved with the pipe body; a gap is formed between the tube body and the bracket; a liquid inlet structure is arranged on the pipe body, a first liquid inlet hole is formed in the support, and the liquid inlet structure is in fluid communication with the first liquid inlet hole. According to the atomizer, a filling piece between the pipe body and the support is omitted, only one large first liquid inlet hole is formed in the support, aerosol generating matrixes can reach the heating body through the liquid inlet structure on the pipe body, the gap between the pipe body and the support and the first liquid inlet hole in the support, smooth liquid inlet is achieved, and the heating effect is improved. And the phenomenon of core pasting is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of atomization, and in particular to an atomizer and an electronic atomization device. Background Art

[0002] The atomizer heats and atomizes the e-liquid, liquid medicine, etc. in the oil storage chamber through the atomizer core, thereby generating an aerosol for the user to inhale. The atomizer core of the existing atomizer is fixed by the atomizer core bracket and the atomizer core cover arranged on its periphery. The design of the oil inlet structure between the atomizer core bracket and the atomizer core cover usually needs to consider the oil inlet rate and oil inlet amount. If the oil inlet structure is not well designed, it will lead to uneven oil conduction and core sticking. Therefore, how to design an oil inlet structure with good oil inlet effect is an urgent problem to be solved. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an improved atomizer and an electronic atomization device to reduce the risk of core sticking.

[0004] The technical solution adopted by the utility model to solve the technical problem is: to provide an atomizer, which includes an atomizer core, and the atomizer core includes a tube body, a bracket and a heating component;

[0005] The bracket is sleeved on the outer periphery of the heating component, and the tube body is sleeved on the outer periphery of the bracket; a gap is formed between the tube body and the bracket;

[0006] The tube body is provided with a liquid inlet structure, the bracket is provided with a first liquid inlet hole, the first liquid inlet hole is fluidically connected to the liquid inlet structure, and the length of the first liquid inlet hole extending along the circumference of the bracket is greater than or equal to half of the maximum length of the circumferential profile of the bracket.

[0007] In some embodiments, the liquid inlet structure includes a first through hole and a second through hole respectively connected to the first liquid inlet hole fluid, the liquid inlet area of ​​the first through hole is larger than the liquid inlet area of ​​the second through hole, and the number of the first through holes is greater than the number of the second through holes.

[0008] In some embodiments, the number of the first through holes is three, the number of the second through hole is one; and / or the liquid inlet area of ​​the first through hole is 5.50 mm 2 ~7.69mm 2 ; The liquid inlet area of ​​the second through hole is 1.88mm 2 ~2.83mm 2 ; and / or, the liquid inlet area of ​​the first liquid inlet hole is 45 to 50 mm 2 .

[0009] In some embodiments, the first through hole is directly connected to the first liquid inlet hole.

[0010] In some embodiments, an open groove is also provided on the bracket; the heating component includes a liquid guiding part and a heating element, the liquid guiding part is sleeved on the outer periphery of the heating element, and the bracket is sleeved on the outer periphery of the liquid guiding part; the liquid guiding part includes a main body and a trimming part connected to each other, the trimming part protrudes radially relative to the main body, and the main body is arranged between the heating element and the bracket; the heating element includes a heating body, and a notch is formed on the heating body; the trimming part, the notch, the second through hole and the open groove are aligned in a circumferential position.

[0011] In some embodiments, the atomizer further includes an outer shell, which includes a shell body and an inner tube of a nozzle connected as an integral whole, the inner tube of the nozzle being arranged inside the shell, one end of the tube body and the inner side of the inner tube of the nozzle defining an air outlet channel together, and the tube body and the outer shell defining a liquid storage chamber together.

[0012] In some embodiments, the atomizer also includes a third seal and a fixed seat; the third seal is arranged between the tube body and the shell; the other end of the tube body is fixedly connected to the fixed seat; the tube body can move between a first position and a second position under the drive of the fixed seat; in the first position, the third seal is located at the liquid inlet structure, and the heating component is not connected to the liquid storage chamber; in the second position, the third seal is misaligned with the liquid inlet structure, and the heating component is connected to the liquid storage chamber.

[0013] In some embodiments, the atomizer also includes an electrode assembly, which includes two electrodes. The fixing base includes a base, which is recessed inward from its upper surface to form a circle of mounting grooves, one end of the tube body is embedded and fixed in the mounting groove, and the base is provided with a lead hole. The heating assembly includes a heating element, which includes a heating body and two conductive connecting parts connected to the heating body, and one end of the two conductive connecting parts away from the heating body respectively passes through the lead hole to reach one side of the lower surface of the base and is connected to the side of the base after bending.

[0014] In some embodiments, the atomizer further includes a nozzle protection shell, which is sleeved on the outer shell to cover the end of the air outlet channel away from the tube body; and / or, the atomizer further includes an oil filling plug, the outer shell is provided with an oil filling hole, the oil filling hole is communicated with the liquid storage chamber, and the oil filling plug is detachably connected to the oil filling hole; and / or, the atomizer further includes a first sealing member, the nozzle inner tube is sealedly connected to the outer side of the first sealing member, and one end of the tube body is sealedly connected to the inner side of the first sealing member.

[0015] In some embodiments, the bracket includes a first part and a second part axially connected, the first liquid inlet hole is located in the first part, and the maximum radial dimension of the second part is larger than the maximum radial dimension of the first part; the tube body includes a first section and a second section axially connected, the liquid inlet structure is located in the second section, and the maximum radial dimension of the second section is larger than the maximum radial dimension of the first section; the gap is formed between the first part and a part of the second section, and the second part abuts against another part of the second section.

[0016] In some embodiments, the width of the gap is less than 0.05 mm; and / or the outer diameter of the tube is 3.7 mm to 5.5 mm; the inner diameter of the tube is 3.1 mm to 5.0 mm; the outer diameter of the bracket is 4.9 mm to 5.0 mm; the inner diameter of the bracket is 6.0 mm to 6.2 mm.

[0017] The utility model also provides an electronic atomization device, which comprises the atomizer described in any one of the above items, and a power supply unit electrically connected to the atomizer.

[0018] The utility model has at least the following beneficial effects: the atomizer of the utility model eliminates the filling piece between the tube body and the bracket, and the bracket has only one first liquid inlet hole, so that the aerosol generating matrix can pass through the liquid inlet structure on the tube body, the gap between the tube body and the bracket, and the first liquid inlet hole on the bracket to reach the heating element, thereby achieving smooth and sufficient liquid inlet and avoiding the occurrence of core sticking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0020] Figure 1 It is a schematic diagram of the overall structure of the electronic atomization device of some embodiments of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structure of the atomizer of some embodiments of the utility model;

[0022] Figure 3 yes Figure 2 The vertical cross-sectional structure diagram of the atomizer shown is in the oil core separation state;

[0023] Figure 4 yes Figure 2 The vertical cross-sectional structure diagram of the atomizer shown is in the oil core combined state;

[0024] Figure 5 yes Figure 4 A schematic structural diagram of a first sealing member of the atomizer shown;

[0025] Figure 6 yes Figure 4 A schematic diagram of the structure of the atomizer core of the atomizer shown;

[0026] Figure 7 yes Figure 6 The schematic diagram of the exploded structure of the atomizer core shown;

[0027] Figure 8 It is a schematic diagram of the transverse cross-sectional structure of the atomizer core of some embodiments of the utility model;

[0028] Fig. 9 yes Figure 8 The enlarged structural diagram of part A of the atomizer core is shown;

[0029] Fig.10 yes Figure 7 A schematic diagram of the structure of the bracket of the atomizer shown;

[0030] Fig.11 yes Figure 3 A schematic diagram of the partial structural decomposition of the atomizer shown;

[0031] Fig.12 yes Fig.11 A further exploded structural diagram of the atomizer shown;

[0032] Description of reference numerals:

[0033] 10. Power supply unit; 20. Atomizer; 6. Liquid storage chamber;

[0034] 1. Pipe body; 11. First through hole; 12. Second through hole; 111. First section of pipe body; 112. Second section of pipe body;

[0035] 2. Bracket; 23. First liquid inlet hole; 24. Open slot; 211. First unit element; 212. Second unit element; 213. Third unit element; 214. Fourth unit element; 215. Fifth unit element; 2101. First part of bracket; 2102. Second part of bracket;

[0036] 3. atomizer core; 30. heating component; 31. liquid guide; 32. heating element; 311. main body; 312. trimming part; 320. notch; 321. heating main body; 322. conductive connection part;

[0037] 4. Shell; 40. Air outlet channel; 41. Suction nozzle protective shell; 42. Oil filling plug; 43. Shell; 44. Suction nozzle inner tube; 410. Blocking part;

[0038] 51, third sealing member; 52, fixing seat; 53, first sealing member; 521, base; 522, cover; 523, second cavity; 524, central through hole; 525, mounting groove; 526, boss; 5201, first limiting hole; 5202, second limiting hole; 527, limiting protrusion; 530, positioning groove; 531, first end of first sealing member; 532, second end of first sealing member; 533, first cavity; 534, second sealing member;

[0039] 60. electrode assembly; 63. liquid absorbing component; 601. electrode. DETAILED DESCRIPTION

[0040] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0041] like Figure 1 As shown, the electronic atomization device of some embodiments of the utility model includes an atomizer 20 and a power supply unit 10 electrically connected to the atomizer 20. An aerosol generating matrix is ​​placed in the atomizer 20, and the power supply unit 10 provides power for the atomizer 20. When the atomizer 20 is powered on, the aerosol generating matrix is ​​heated and atomized to form an aerosol for the user to inhale. In some embodiments, the aerosol generating matrix can be a liquid aerosol generating matrix. The atomizer 20 and the power supply unit 10 are detachably connected, and the atomizer 20 and the power supply unit 10 can be produced or transported separately. Before using the electronic atomization device, the user needs to push the fixing seat 52 into the housing 4 so that the atomizer core 3 in the atomizer 20 is connected to the liquid storage chamber 6, that is, the oil core is combined, and then the atomizer 20 is fixed to the power supply unit 10, so that the power supply unit 10 can provide the atomizer 20 with power for heating the atomizer core 3. In some other embodiments, the atomizer 20 and the power supply unit 10 may also be integrated and non-detachable, and the atomizer 20 and the power supply unit 10 are fixedly connected. The state during use may be that the user presses the shell 4 before using the electronic atomization device, so that the atomization core 3 in the atomizer 20 is connected to the liquid storage chamber 6, and the electronic atomization device enters the oil core combined state, and the power supply unit 10 can provide the atomizer 20 with power for heating the atomization core 3.

[0042] Figures 2 to 4 The atomizer 20 in some embodiments of the utility model is shown. The atomizer 20 includes an atomizing core 3. Figures 6 to 8 The atomizer core 3 in the atomizer 20 is shown. Fig.10The bracket 2 in the atomizer core 3 is shown. The atomizer core 3 includes a tube body 1, a bracket 2 and a heating component 30. The heating component 30 includes a liquid guide 31 and a heating element 32. The liquid guide 31 is sleeved on the outer periphery of the heating element 32, the bracket 2 is sleeved on the outer periphery of the liquid guide 31, and the tube body 1 is sleeved on the bracket 2. That is, the heating element 32, the liquid guide 31, the bracket 2 and the tube body 1 are sleeved from the inside to the outside in sequence, forming a Figure 3 and Figure 4 The overall structure shown. A liquid inlet structure is provided on the tube body 1, and a first liquid inlet hole 23 is provided on the bracket 2. The liquid inlet structure and the first liquid inlet hole 23 are fluidically connected. It should be noted that the fluid can be a liquid, a gas, an aerosol, or a mixture of at least two of the three. The fluid connection between the liquid inlet structure and the first liquid inlet hole 23 means that the fluid can flow between the liquid inlet structure and the first liquid inlet hole 23. The first liquid inlet hole 23 extends along the circumference of the bracket 2, that is, the length direction of the first liquid inlet hole 23 is consistent with the circumference of the bracket 2. Figure 3 In the illustrated embodiment, the atomizer 20 further comprises a housing 4. The housing 4 has an air outlet channel 40. The tube body 1 is connected to the housing 4, and the tube body 1 is in fluid communication with the air outlet channel 40. One end of the air outlet channel 40 away from the tube body 1 is the air outlet end of the atomizer 20. The tube body 1 and the housing 4 together define a closed liquid storage chamber 6, which is used to store a liquid aerosol-generating matrix. The liquid storage chamber 6 is in fluid communication with the liquid inlet structure on the tube body 1, whereby the aerosol-generating matrix in the liquid storage chamber 6 can flow through the liquid inlet structure on the tube body 1, the first liquid inlet hole 23 on the bracket 2, and the liquid guide 31 in sequence, and the aerosol-generating matrix is ​​heated and atomized at the heating element 32 to form an aerosol, which enters the air outlet channel 40 through the tube body 1, and then flows out of the atomizer 20 from the air outlet end for the user to inhale. Among them, the heating element 32 is used to be electrically and / or mechanically connected to the power supply unit 10 to heat in the power-on state.

[0043] like Figure 3 and Figure 4 As shown, in some embodiments, the electronic atomization device also includes a nozzle protection shell 41, which is sleeved on the outer shell 4 of the atomizer 20 to cover the air outlet end of the atomizer 20 to play a protective and dustproof role. The atomizer 20 may also include an oil filling plug 42. An oil filling hole is provided on the outer shell 4, and the oil filling hole is connected to the liquid storage chamber 6. The oil filling plug 42 is detachably connected to the oil filling hole to close the oil filling hole. The oil filling plug 42 can also be pulled out from the oil filling hole, so that the aerosol generating matrix can be injected into the liquid storage chamber 6 through the oil filling hole, so that the atomizer 20 can be repeatedly filled with oil and used repeatedly.

[0044] like Figures 3 to 5As shown, in some embodiments, the atomizer 20 further includes a first sealing member 53, the housing 4 includes a connected shell 43 and a nozzle inner tube 44, the shell 43 and the nozzle inner tube 44 are connected as one body, the nozzle inner tube 44 is arranged inside the shell 43, one end of the tube body 1 and the inner side of the nozzle inner tube 44 define the air outlet channel 40 together, and the shell 43 and the nozzle inner tube 44 are integrally formed. The nozzle inner tube 44 is sealed and connected to the outer side of the first sealing member 53, and one end of the tube body 1 is sealed and connected to the inner side of the first sealing member 53. The nozzle protective shell 41 is sleeved on the shell 43, covering most of the outer periphery of the shell 43. The nozzle protective shell 41 is provided with a blocking portion 410, which is detachably engaged with the air outlet channel 40 to block the end of the air outlet channel 40 away from the tube body 1 (i.e., the air outlet end of the atomizer 20) when the atomizer 20 is not in use. When in use, the nozzle protection shell 41 is removed from the shell 43, and the blocking part 410 is separated from the air outlet channel 40. In this way, the blocking part 410 can be reused as the nozzle protection shell 41 is disassembled and assembled. The nozzle inner tube 44 defines the air outlet channel 40. The first sealing member 53 is connected between the tube body 1 and the shell 4, specifically between the tube body 1 and the nozzle inner tube 44, and respectively connects the air outlet channel 40 and the interior of the tube body 1 to prevent the aerosol-generating matrix in the liquid storage chamber 6 from leaking through the joint between the nozzle inner tube 44 and the tube body 1. See Figure 5 The first sealing member 53 has a first end 531 and a second end 532. The first sealing member 53 extends into the nozzle inner tube 44 with its first end 531, and a U-shaped bending portion is formed at the second end 532 thereof. The bending portion defines a positioning groove 530. The end of the nozzle inner tube 44 away from the housing 43 is engaged with the positioning groove 530 on the second end 532 of the first sealing member 53. A first cavity 533 is formed between the first end 531 and the second end 532 of the first sealing member 53, and the first cavity 533 is connected to the air outlet channel 40.

[0045] like Figure 5 As shown, in some embodiments, a second sealing member 534 is provided on the inner wall of the first cavity 533 of the first sealing member 53. The second sealing member 534 may be a sealing ring or a sealing protrusion. The second sealing member 534 may be integral with or separate from the first sealing member 53. One end of the tube body 1 is located inside the first sealing member 53 and the tube body 1 abuts against the second sealing member 534.

[0046] Please also read Figure 3 and Figure 4 , Fig.11 and Fig.12In some embodiments, the atomizer 20 further includes a third sealing member 51 and a fixing seat 52. The third sealing member 51 is disposed between the tube body 1 and the outer shell 4. One end of the tube body 1 away from the air outlet channel 40 is fixedly connected to the fixing seat 52. A first limiting hole 5201 and a second limiting hole 5202 are provided on the shell 43 of the outer shell 4, and the second limiting hole 5202 is located above the first limiting hole 5201. A limiting protrusion 527 is provided on the fixing seat 52. The tube body 1 can move between a first position and a second position under the drive of the fixing seat 52. The first position corresponds to the oil core separation state of the atomizer 20, and the second position corresponds to the oil core combination state of the atomizer 20. Specifically, in the first position, Figure 3 The atomizer 20 shown is in the factory state, the third sealing component 51 is located at the liquid inlet structure of the tube body 1, and the heating component 30 is not connected to the liquid storage chamber 6. That is, the liquid inlet structure of the tube body 1 is located on the inner side of the third sealing component 51, so that the liquid storage chamber 6 is sealed and isolated from the inside of the tube body 1, and the aerosol generating matrix cannot be transmitted from the liquid storage chamber 6 to the liquid guide 31. At this time, the atomizer 20 is in a state of oil core separation, and the limiting protrusion 527 is fastened with the first limiting hole 5201. When in use, the fixing seat 52 is pushed upward to drive the tube body 1 to move up a certain distance relative to the third sealing component 51, so that the liquid inlet structure of the tube body 1 is misaligned with the third sealing component 51, and the liquid inlet structure of the tube body 1 is connected to the fluid of the liquid storage chamber 6, so that the heating component 30 on the inner side of the tube body 1 is connected to the liquid storage chamber 6 and reaches the second position. At this time, as shown in FIG. Figure 4 As shown, the atomizer 20 is in the oil core combined state, and the limiting protrusion 527 is fixedly engaged with the second limiting hole 5202. Therefore, the atomizer 20 is in the oil core separated state when it leaves the factory, which can avoid oil leakage during transportation. When the user uses it for the first time, he only needs to push the fixing seat 52 upward to make the atomizer 20 enter the normal working state of the oil core combined. Figure 8 and Fig. 9 As shown, a gap e is formed between the tube body 1 and the bracket 2. The aerosol-generating matrix can pass through the liquid inlet structure on the tube body 1, the gap e between the tube body 1 and the bracket 2, and the first liquid inlet hole 23 on the bracket 2 to reach the heating element 32 of the atomizing core 3, thereby achieving smooth liquid inlet and avoiding the occurrence of the core sticking phenomenon.

[0047] The oil inlet structure design of the atomizer core of the existing atomizer is usually: a filler is arranged between the tube body 1 and the bracket 2. The filler is usually a cotton-wrapped or glass fiber tube, which plays a role in preventing oil leakage and oil flying. However, when the user draws at a fast speed or in the later stage of drawing, the presence of the filler will make the atomizer core oil conduction not smooth, which is easy to cause the core to stick.

[0048] In summary, the atomizer 20 of the utility model eliminates the filling piece between the tube body 1 and the bracket 2, and the aerosol-generating matrix can pass through the liquid inlet structure on the tube body 1, the gap e between the tube body 1 and the bracket 2, and the first liquid inlet hole 23 on the bracket 2 to reach the heating element 32 of the atomizing core 3, so as to achieve smooth liquid inlet and avoid the occurrence of the core sticking phenomenon. After eliminating the filling piece, the structure of the atomizer 20 is simplified. After the structure is simplified, the assembly steps between the heating element 32, the liquid guide 31, the bracket 2 and the tube body 1 are relatively simple, and automatic assembly can be achieved, thereby improving assembly efficiency and reducing material costs. Specifically, taking the oil-conducting cotton as an example, the assembly process of the liquid-conducting part 31 can be as follows: first take the liquid-conducting part 31 and the heating element 32, and place the heating element 32 on the front of the liquid-conducting part 31 (the linen surface of the oil-conducting cotton), and then put the liquid-conducting part 31 and the heating element 32 into the cotton-wrapped stick so that the liquid-conducting part 31 is wrapped around the outer periphery of the heating element 32, and then the whole formed by the liquid-conducting part 31 and the heating element 32 is inserted into the bracket 2, and then the excess cotton of the liquid-conducting part 31 is automatically cut off, and finally the whole formed by the heating element 32, the liquid-conducting part 31 and the bracket 2 is inserted into the tube body 1. The above assembly processes can all be realized by automated assembly equipment. At the same time, after the filling piece is removed, the radial dimension of the atomizer 20 can be reduced, which is conducive to the miniaturization of the atomizer 20.

[0049] In addition, the atomizer 20 of the utility model is provided with only one first liquid inlet hole 23 on the bracket 2, and the length of the first liquid inlet hole 23 extending along the circumference of the bracket 2 is greater than or equal to half of the maximum length of the circumferential profile of the bracket 2, which is conducive to concentrated and sufficient liquid inlet. It should be noted that the circumference of the bracket 2 is perpendicular to the axial direction of the bracket 2, and the axial direction of the bracket 2 is also the axial direction of the atomizer 20, and the axial direction of the atomizer 20 is also the gas outlet direction (the direction in which the aerosol overflows from the atomizer 20). Figure 7 and Figure 8 In the illustrated embodiment, the circumferential contour of the bracket 2 at certain positions other than the first liquid inlet hole 23 is a circle, that is, the maximum length of the circumferential contour of the bracket 2 is the circumference of the circle. At this time, the length of the first liquid inlet hole 23 extending along the circumference of the bracket 2 is less than the semicircular circumference of the bracket 2. Alternatively, the opening angle of the bracket 2 along its cross-sectional direction (for example, radial direction) is greater than or equal to 180 degrees. In this way, the first liquid inlet hole 23 on the bracket 2 has a sufficiently large area. The bracket 2 is in direct contact with the liquid guide 31, and the first liquid inlet hole 23 mainly plays the role of sufficient liquid inlet, so the liquid inlet area of ​​the first liquid inlet hole 23 needs to be large enough. For example, the liquid inlet area of ​​the first liquid inlet hole 23 can be 45 to 50 mm. 2 .

[0050] like Fig.10As shown, in some embodiments, the bracket 2 may include a first portion 2101 and a second portion 2102 that are axially connected. The first liquid inlet 23 is located in the first portion 2101. The maximum radial dimension of the second portion 2102 is greater than the maximum radial dimension of the first portion 2101. A gap e is formed between the first portion 2101 and the tube body 1, and the second portion 2102 is in contact with the tube body 1. Thus, the bracket 2 forms a gap e between the first portion 2101 having a smaller radial dimension and the tube body 1, and the second portion 2102 having a larger radial dimension is reserved for abutting against the tube body 1, thereby fixing the relative position between the bracket 2 and the tube body 1. Specifically:

[0051] like Fig.10 As shown, in some embodiments, the first part 2101 of the bracket 2 includes a first unit element 211, a second unit element 212 and a third unit element 213, and the first unit element 211, the second unit element 212 and the third unit element 213 are all arc-shaped components (or semi-cylindrical components). Specifically, the first unit element 211, the second unit element 212 and the third unit element 213 have arc-shaped contours along the circumferential direction. The axial length of the third unit element 213 is greater than the axial lengths of the first unit element 211 and the second unit element 212. A through hole is provided on the third unit element 213, and the first unit element 211 and the second unit element 212 are respectively located on opposite sides of the through hole on the third unit element 213. As a result, a gap is formed between the first unit element 211 and the second unit element 212. The gap between the first unit element 211 and the second unit element 212 and the through hole on the third unit element 213 together define a first liquid inlet hole 23. The first liquid inlet hole 23 can be as follows Fig.10 The first liquid inlet hole 23 is shown as a racetrack shape, that is, the four corners of the first liquid inlet hole 23 have arc-shaped transition connecting parts. Alternatively, the first liquid inlet hole 23 can also be other shapes, such as elliptical, rectangular, etc.

[0052] like Fig.10 As shown, in some embodiments, the second portion 2102 of the stent 2 includes a fourth unit element 214 and a fifth unit element 215. The fourth unit element 214 and the fifth unit element 215 are both annular. One end of the fifth unit element 215 is respectively connected to the end faces of the second unit element 212 and the third unit element 213 axially away from the first unit element 211, and the other end of the fifth unit element 215 is connected to the fourth unit element 214. The maximum cross-sectional area of ​​the fourth unit element 214 is greater than the sum of the maximum cross-sectional area of ​​the second unit element 212 and the maximum cross-sectional area of ​​the third unit element 213, that is, the maximum radial dimension of the fourth unit element 214 is greater than the sum of the maximum radial dimensions of the second unit element 212 and the third unit element 213. Therefore, the fifth unit element 215 is a gradual transition component of the cross-sectional area (or radial dimension), and its cross-sectional area (or radial dimension) gradually increases in the direction away from the fourth unit element 214.

[0053] The first unit element 211 , the second unit element 212 , the third unit element 213 , the fourth unit element 214 and the fifth unit element 215 are integrated and are made of a section of metal pipe by a metal stretching process. Holes and grooves are opened on the metal pipe to manufacture the bracket 2 .

[0054] During assembly, the bracket 2 is installed in the tube body 1, and the fourth unit component 214 is tightly matched with the inner wall surface of the tube body 1. The fourth unit component 214 and the inner wall surface of the tube body 1 can be interference fit, so that the bracket 2 is firmly fixed in the tube body 1. A gap e is formed between the first unit component 211, the second unit component 212 and the third unit component 213 and the inner wall surface of the tube body 1. In some embodiments, the width of the gap e can be between 0.05mm and 0.1mm. That is, the width of the gap e can be 0.05mm, 0.1mm or any value between 0.05mm and 0.1mm. As described in the prior art of the background technology, if the gap e between the tube body 1 and the bracket 2 is greater than or equal to 0.05mm, it is usually necessary to set a filling piece in the form of outer cotton between the tube body 1 and the bracket 2 to prevent oil leakage and oil flying, or to add a glass fiber tube to the bracket 2 to prevent oil leakage and oil flying. If there is no gap e between the tube body 1 and the bracket 2, the liquid inlet to the atomizer core 3 will not be smooth, and the tube body 1 and the bracket 2 cannot be completely fitted in terms of process. Therefore, the atomizer 20 of the utility model cancels the filler between the tube body 1 and the bracket 2, and by setting the gap e between the tube body 1 and the bracket 2 to between 0.05 mm and 0.1 mm, the liquid aerosol generating matrix will not flow due to the surface tension of the liquid, and the aerosol generating matrix filled in the gap e forms a leak-proof layer, which can just prevent oil leakage and oil flying, solving the oil leakage and oil flying problems. At the same time, since the cotton filler is cancelled, the assembly between the tube body 1 and the bracket 2 can be automatically assembled, so that the entire atomizer core 3 and the atomizer 20 can be automatically assembled.

[0055] like Figure 6 and Figure 7 As shown, in some embodiments, the liquid inlet structure on the tube body 1 includes a first through hole 11 and a second through hole 12. The first through hole 11 and the second through hole 12 are respectively connected to the first liquid inlet hole 23 fluid. The liquid inlet area of ​​the first through hole 11 is larger than the liquid inlet area of ​​the second through hole 12, and the number of the first through holes 11 is more than the number of the second through holes 12. That is, the area and number of the liquid inlet holes on the tube body 1 are unevenly distributed. It should be noted that the liquid inlet area of ​​the first through hole 11 is also the hole area of ​​the first through hole 11; the liquid inlet area of ​​the second through hole 12 is also the hole area of ​​the second through hole 12.

[0056] Specifically, the number of liquid inlet holes and the liquid inlet area will have an impact on the liquid inlet rate. If the liquid inlet rate is too low, the risk of core sticking will increase, and if the liquid inlet rate is too high, it will cause oil flying. Both core sticking and oil flying will lead to a bad user experience. The more liquid inlet holes there are, the faster the liquid inlet rate will be; the larger the liquid inlet area of ​​the liquid inlet hole, the faster the liquid inlet rate will be. After testing, when each liquid inlet hole is configured to have the same liquid inlet area, the liquid inlet rate of each liquid inlet hole remains consistent, but the temperature on the heating element 32 is not evenly distributed, which will cause the heating rate at each liquid inlet hole to be inconsistent. Therefore, the inventors found in the experimental process that uniformly configuring the liquid inlet area of ​​each liquid inlet hole will be detrimental to the effect of uniform atomization, and the user experience is poor. Therefore, setting the area and number of the liquid inlet holes on the tube body 1 to be unevenly distributed can be more conducive to achieving a uniform atomization effect and improving the user experience.

[0057] Furthermore, in some embodiments, the first through holes 11 with a larger liquid inlet area and a larger number can be set to correspond to the positions with higher temperatures on the heating element 32; the second through holes 12 with a smaller liquid inlet area and a smaller number can be set to correspond to the positions with lower temperatures on the heating element 32. In this way, the liquid inlet rate and the heating temperature can be properly matched to avoid the occurrence of core sticking or oil flying, which is conducive to uniform atomization and improves user experience.

[0058] like Figure 8 As shown, in some embodiments, the number of the first through holes 11 can be set to three, and the number of the second through hole 12 can be set to one. Three first through holes 11 can be set at a position with a higher temperature on the heating element 32, and one second through hole 12 can be set at a position with a lower temperature on the heating element 32. However, the number of the first through holes 11 and the second through holes 12 is not limited thereto, and in other embodiments, the number of the first through holes 11 and the second through holes 12 can be adjusted according to specific circumstances.

[0059] According to the test, in order to obtain a better atomization effect and avoid the occurrence of core sticking and oil flying, the liquid inlet area of ​​the first through hole 11 can be 5.50mm 2 ~7.69mm 2 The liquid inlet area of ​​the second through hole 12 can be 1.88mm 2 ~2.83mm 2 That is, the liquid inlet area of ​​the first through hole 11 can be 5.50 mm 2 、7.69mm 2 or 5.50mm 2 ~7.69mm 2 The liquid inlet area of ​​the second through hole 12 can be 1.88mm 2 , 2.83mm 2 or 1.88mm 2~2.83mm 2 Any value between. However, the liquid inlet area of ​​the first through hole 11 and the second through hole 12 is not limited thereto. In other embodiments, the liquid inlet area of ​​the first through hole 11 and the second through hole 12 can be adjusted according to specific circumstances. In some embodiments, the first through hole 11 and the second through hole 12 are both elliptical, and the elliptical minor axis size (width) of the elliptical first through hole 11 can be 2.0mm~2.8mm, and the elliptical major axis size (length) of the elliptical first through hole 11 can be 3.5mm. Specifically, the elliptical first through hole 11 can be configured into the following four sizes: (1) width 2.0mm*length 3.5mm (area 5.50mm 2 ); (2) width 2.3mm*length 3.5mm (area 6.32mm 2 ); (3) width 2.5mm*length 3.5mm (area 6.87mm 2 ); (4) width 2.8mm*length 3.5mm (area 7.69mm 2 The elliptical second through hole 12 can be configured into the following three sizes: (1) width 0.8 mm*length 3.0 mm (area 1.88 mm 2 ); (2) width 1.0mm*length 3.0mm (area 2.36mm 2 ); (3) width 1.2mm*length 3.0mm (area 2.83mm 2 ).

[0060] like Figure 6 and Figure 7 As shown, in some embodiments, the tube body 1 is roughly cylindrical. The tube body 1 includes a first section 111 and a second section 112 connected axially, the first through hole 11 and the second through hole 12 are located in the second section 112, the maximum radial dimension of the second section 112 is greater than the maximum radial dimension of the first section 111, and the first section 111; a gap is formed between the first part 2101 and a part of the second section 112, and the second part 2102 abuts against another part of the second section 112. The tube body 1 may include a first section 111 and a second section 112 with different cross-sectional areas, and the cross-sectional area of ​​the first section 111 is smaller than the cross-sectional area of ​​the second section 112. "Cross section" refers to the cross section of the tube body 1 along the horizontal direction, and the horizontal direction is a direction perpendicular to the length direction (or axial direction) of the tube body 1. The first section 111 of the tube body 1 is connected to the housing 4 and is in fluid communication with the gas outlet channel 40. The liquid inlet structure is arranged on the second section 112 of the tube body 1. The first through hole 11 and the second through hole 12 can be evenly distributed along the circumference of the tube body 1.

[0061] The outer diameter of the first section 111 of the tube body 1 can be 3.7mm to 3.8mm; the outer diameter of the second section 112 of the tube body 1 can be 5.4 to 5.5mm. The inner diameter of the first section 111 of the tube body 1 can be 3.1mm to 3.3mm; the inner diameter of the second section 112 of the tube body 1 can be 4.8 to 5.0mm. Taking into account the external structure of the tube body 1 without considering it, the outer diameter of the tube body 1 can be 3.7mm to 5.5mm, and the inner diameter of the tube body 1 can be 3.1mm to 5.0mm. The outer diameter of the bracket 2 can be 4.9mm to 5.0mm. The inner diameter of the bracket 2 can be 6.0mm to 6.2mm. The outer diameter of the atomizer core in the prior art mostly exceeds 6mm, which is not conducive to the miniaturization trend of the atomizer 20. In the atomizer 20 of the utility model, the outer diameter of the tube body 1 is only 5.5mm at most, which is conducive to the miniaturization trend of the atomizer 20.

[0062] The first liquid inlet hole 23 may be in fluid communication with the first through hole 11, or in fluid communication with the second through hole 12, or in fluid communication with the first through hole 11 and the second through hole 12 respectively. The first liquid inlet hole 23 may be in direct communication with the first through hole 11 (or the second through hole 12), or in indirect communication with the first through hole 11 (or the second through hole 12). The indirect communication between the first liquid inlet hole 23 and the first through hole 11 (or the second through hole 12) means that the first liquid inlet hole 23 and the first through hole 11 (or the second through hole 12) are staggered, and indirect fluid communication is achieved through the gap e between the bracket 2 and the tube body 1.

[0063] Furthermore, in some embodiments, the first through hole 11 is directly connected to the first liquid inlet hole 23. That is, the first liquid inlet hole 23 is directly connected to at least one first through hole 11. For example, the first liquid inlet hole 23 can be directly connected to one first through hole 11, or the first liquid inlet hole 23 can be directly connected to more first through holes 11. When the first liquid inlet hole 23 is directly connected to two or more first through holes 11, it means that the liquid inlet area of ​​the first liquid inlet hole 23 is greater than the sum of the liquid inlet areas of the two or more first through holes 11. Figure 7 and Figure 8 In the illustrated embodiment, the first liquid inlet hole 23 is directly connected to the three first through holes 11, that is, the liquid inlet area of ​​the first liquid inlet hole 23 is greater than the sum of the liquid inlet areas of the three first through holes 11. Thus, the aerosol-generating substrate in the liquid storage chamber 6 can directly enter the first through hole 11 with a larger liquid inlet area through the first liquid inlet hole 23, achieving smooth liquid inlet and avoiding the occurrence of sticking.

[0064] like Figure 7 and Figure 8As shown, in some embodiments, the bracket 2 is further provided with an open slot 24, and the second through hole 12 is directly connected to the open slot 24. Specifically, the open slot 24 extends from one end of the bracket 2 to the other end along the axial direction of the bracket 2, but does not penetrate the other end of the bracket 2. The open slot 24 is an assembly step for automatic cotton cutting. After the heating element 32 and the liquid guide 31 are integrally loaded into the bracket 2, the portion of the liquid guide 31 protruding from the open slot 24 will be cut off, thereby facilitating the cotton cutting positioning during the automated assembly process of the atomizer 20. Therefore, although the aerosol generating matrix in the liquid storage chamber 6 will also flow through the open slot 24, the main function of the open slot 24 is to facilitate automatic cotton cutting, and its role in guiding the liquid inlet is secondary. Therefore, the liquid inlet area of ​​the open slot 24 can be configured to be smaller than the liquid inlet area of ​​the first liquid inlet hole 23. Correspondingly, the second through hole 12 with a smaller liquid inlet area can be directly connected to the open slot 24.

[0065] like Figure 6 and Figure 7 As shown, in some embodiments, the heating element 32 includes a heating body 321 and two conductive connecting parts 322 connected to each other, and the liquid guide 31 is sleeved on the heating body 321. The conductive connecting part 322 is used to be electrically and / or mechanically connected to the power supply unit 10, so the temperature on the conductive connecting part 322 is usually higher than the temperature on the heating body 321. At least one conductive connecting part 322 is aligned with the first through hole 11 in a circumferential position. That is, one conductive connecting part 322 can be aligned with the first through hole 11 in a circumferential position, or both conductive connecting parts 322 can be aligned with the conductive connecting part 322 in a circumferential position with the first through hole 11. The second through holes 12 with a smaller liquid inlet area and a smaller number are staggered with the conductive connecting part 322 in a circumferential position. In this way, the first through holes 11 with a larger liquid inlet area and a larger number (meaning a fast liquid inlet rate) are arranged corresponding to the position with a higher temperature on the heating element 32 (the conductive connecting part 322), and the second through holes 12 with a smaller liquid inlet area and a smaller number (meaning a slow liquid inlet rate) are arranged corresponding to the position with a lower temperature on the heating element 32 (the heating body 321). This can ensure that the liquid inlet rates at the first through holes 11 and the second through holes 12 and the temperature of the heating element 32 are appropriately matched, thereby avoiding the occurrence of core sticking or oil flying, which is conducive to uniform atomization and improves user experience.

[0066] like Fig.11 and Fig.12As shown, in some embodiments, the fixing seat 52 includes a base 521 and a cover 522. The cover 522 defines a second cavity 523, and the base 521 is accommodated in the second cavity 523. The cover 522 is connected to the shell 43 of the shell 4. The atomizer 20 also includes an electrode assembly 60, and the electrode assembly 60 is used to connect the power supply unit 10. The electrode assembly 60 includes two electrodes 601, and the two electrodes 601 are respectively connected to the positive electrode and the negative electrode of the power supply unit 10. The heating element 32 is connected to the base 521 of the fixing seat 52. The base 521 is recessed inward from its upper surface to form a circle of mounting grooves 525, and the inner side of the mounting groove 525 defines a boss 526. A central through hole 524 is opened on the boss 526, and the central through hole 524 passes through the upper surface and the lower surface of the base 521. One end of the tube body 1 away from the air outlet channel 40 is embedded and fixed in the mounting groove 525, and the central through hole 524 is connected to the interior of the tube body 1. A lead hole (not shown in the figure) is also provided on the boss 526 and on one side of the central through hole 524, and the lead hole also passes through the upper surface and the lower surface of the substrate 521. One end of the two conductive connecting parts 322 away from the heating body 321 passes through the lead hole to reach one side of the lower surface of the substrate 521, and is connected to the side of the substrate 521 after bending. The ends of the two conductive connecting parts 322 away from the heating body 321 and the side of the substrate 521 can be fixed and sealed together by glue. The electrode assembly 60 is arranged on one side of the lower surface of the substrate 521, and the two electrodes 601 are respectively connected to one end of the two conductive connecting parts 322 away from the heating body 321, thereby realizing the conductive connection between the power supply unit 10, the electrode assembly 60, and the conductive connecting parts 322. In this way, the base 521 of the fixing seat 52 can be used to fix the electrode assembly 60 and the heating element 32 at the same time. The heating element 32 only needs to be installed on the base 521 of the fixing seat 52 to be effectively positioned and electrically connected, without introducing other additional fixing parts to help fix the heating element 32.

[0067] like Fig.12 As shown, in some embodiments, the atomizer 20 further includes a liquid absorbing member 63, which may be an oil absorbing cotton. The liquid absorbing member 63 is disposed between the lower surface of the base 521 and the cover 522, and the condensed liquid around the base 521 may drip onto the liquid absorbing member 63 and be absorbed, thereby preventing the electrode assembly 60 from short-circuiting.

[0068] The liquid guide 31 is usually made of a soft material such as a cotton material, and the heating body 321 supports the liquid guide 31. Therefore, the axial center position of the heating body 321 and the axial center position of the liquid guide 31 can be aligned, so that the liquid guide 31 is stably supported and the deformation and collapse of the liquid guide 31 are prevented. At the same time, in order to prevent the deformation and collapse of the liquid guide 31, the axial lengths of the liquid guide 31 and the heating body 321 cannot differ too much. For example, the distance between the upper end of the liquid guide 31 and the upper end of the heating body 321, and the distance between the lower end of the liquid guide 31 and the lower end of the heating body 321 can be set to 0.2mm to 0.3mm.

[0069] like Figure 7 and Figure 8 As shown, in some embodiments, the liquid guide 31 includes a main body 311 and a trimming portion 312 connected to each other. The main body 311 is roughly cylindrical, and the trimming portion 312 protrudes radially relative to the main body 311. The trimming portion 312 is formed on the liquid guide 31 when the cotton is cut at the opening groove 24 of the corresponding bracket 2 during the automated assembly process. The heating body 321 is in the shape of an arc sheet, and the two ends of the arc contour 521 are not connected, but are spaced to form a gap 320. The two conductive connecting portions 322 are respectively connected to the two ends of the arc contour of the heating body 321. Figure 8 As shown, the trimming portion 312 and the notch 320 can be arranged corresponding to the opening groove 24 on the bracket 2 and the second through hole 12 on the tube body 1. That is, the trimming portion 312 and the notch 320 can be arranged circumferentially opposite to the opening groove 24 on the bracket 2 and the second through hole 12 on the tube body 1. The trimming portion 312, the notch 320, the second through hole 12 and the opening groove 24 are aligned in the circumferential position, that is, the trimming portion 312 and the second through hole 12 that are not mainly supplied with oil are aligned with the notch 320, so that the liquid inlet rate and the heating area can be properly matched, and uniform oil conduction can be achieved, thereby preventing the occurrence of core sticking.

[0070] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope covered by the claims of the utility model.

Claims

1. An atomizer (20), characterized in that: It comprises an atomizing core (3), wherein the atomizing core (3) comprises a tube body (1), a bracket (2) and a heating component (30); The bracket (2) is sleeved on the outer circumference of the heating component (30), and the tube body (1) is sleeved on the outer circumference of the bracket (2); a gap is formed between the tube body (1) and the bracket (2); The tube body (1) is provided with a liquid inlet structure, and the bracket (2) is provided with a first liquid inlet hole (23), the first liquid inlet hole (23) is fluidically connected to the liquid inlet structure, and the length of the first liquid inlet hole (23) extending along the circumference of the bracket (2) is greater than or equal to half of the maximum length of the circumferential profile of the bracket (2).

2. The atomizer (20) according to claim 1, characterized in that: The liquid inlet structure comprises a first through hole (11) and a second through hole (12) respectively connected to the first liquid inlet hole (23) by fluid, the liquid inlet area of ​​the first through hole (11) being larger than the liquid inlet area of ​​the second through hole (12), and the number of the first through holes (11) being greater than the number of the second through holes (12).

3. The atomizer (20) according to claim 2, characterized in that: The number of the first through holes (11) is three, and the number of the second through hole (12) is one; And / or, the liquid inlet area of ​​the first through hole (11) is 5.50 mm 2 ~7.69mm 2 The liquid inlet area of ​​the second through hole (12) is 1.88mm 2 ~2.83mm 2 ; And / or, the liquid inlet area of ​​the first liquid inlet hole (23) is 45-50 mm 2 .

4. The atomizer (20) according to claim 2, characterized in that: The first through hole (11) is directly connected to the first liquid inlet hole (23).

5. The atomizer (20) according to claim 2, characterized in that: The bracket (2) is also provided with an opening slot (24); The heating component (30) comprises a liquid guiding member (31) and a heating body (32), the liquid guiding member (31) being sleeved on the outer periphery of the heating body (32), and the bracket (2) being sleeved on the outer periphery of the liquid guiding member (31); The liquid guide member (31) comprises a main body (311) and a trimming portion (312) connected to each other, the trimming portion (312) protruding radially relative to the main body (311), and the main body (311) is arranged between the heating element (32) and the bracket (2); The heating element (32) comprises a heating body (321), and a notch (320) is formed on the heating body (321); The trimming portion (312), the notch (320), the second through hole (12) and the opening groove (24) are aligned in a circumferential position.

6. The atomizer (20) according to claim 1, characterized in that: The atomizer (20) further comprises an outer shell (4), wherein the outer shell (4) comprises a shell body (43) and a nozzle inner tube (44) which are connected as one body, wherein the nozzle inner tube (44) is arranged inside the shell body (43), and one end of the tube body (1) and the inner side of the nozzle inner tube (44) together define an air outlet channel (40), and the tube body (1) and the outer shell (4) together define a liquid storage chamber (6).

7. The atomizer (20) according to claim 6, characterized in that: The atomizer (20) further comprises a third sealing member (51) and a fixing seat (52); The third sealing member (51) is arranged between the tube body (1) and the outer shell (4); The other end of the tube body (1) is fixedly connected to the fixing seat (52); the tube body (1) can move between a first position and a second position under the drive of the fixing seat (52); in the first position, the third sealing member (51) is located at the liquid inlet structure, and the heating component (30) is not connected to the liquid storage chamber (6); in the second position, the third sealing member (51) is misaligned with the liquid inlet structure, and the heating component (30) is connected to the liquid storage chamber (6).

8. The atomizer (20) according to claim 7, characterized in that: The atomizer (20) further comprises an electrode assembly (60), wherein the electrode assembly (60) comprises two electrodes (601). The fixing seat (52) comprises a base (521), wherein the base (521) is recessed inwardly from its upper surface to form a circle of mounting grooves (525), one end of the tube body (1) is embedded and fixed in the mounting groove (525), and the base (521) is provided with a lead hole. The heating component (30) comprises a heating element (32), and the heating element (32) comprises a heating body (321) and two conductive connecting parts (322) connected to the heating body (321), wherein one end of the two conductive connecting parts (322) away from the heating body (321) respectively passes through the lead holes to reach one side of the lower surface of the substrate (521) and is connected to the side of the substrate (521) after being bent.

9. The atomizer (20) according to claim 6, characterized in that: The atomizer (20) further comprises a nozzle protection shell (41), wherein the nozzle protection shell (41) is sleeved on the outer shell (4) and covers an end of the air outlet channel (40) away from the tube body (1); And / or, the atomizer (20) further comprises an oil filling plug (42), the housing (4) is provided with an oil filling hole, the oil filling hole is connected to the liquid storage chamber (6), and the oil filling plug (42) is detachably connected to the oil filling hole; And / or, the atomizer (20) further comprises a first sealing member (53), the inner tube (44) of the suction nozzle is sealedly connected to the outer side of the first sealing member (53), and one end of the tube body (1) is sealedly connected to the inner side of the first sealing member (53).

10. The atomizer (20) according to claim 1, characterized in that: The support (2) comprises a first part (2101) and a second part (2102) which are axially connected, the first liquid inlet hole (23) is located in the first part (2101), and the maximum radial dimension of the second part (2102) is greater than the maximum radial dimension of the first part (2101); The tube body (1) comprises a first section (111) and a second section (112) connected axially, the liquid inlet structure is located in the second section (112), and the maximum radial dimension of the second section (112) is greater than the maximum radial dimension of the first section (111); The gap is formed between the first portion (2101) and a portion of the second section (112), and the second portion (2102) abuts against another portion of the second section (112).

11. The atomizer (20) according to claim 1, characterized in that: The width of the gap is less than 0.05 mm; And / or, the outer diameter of the tube body (1) is 3.7 mm to 5.5 mm; the inner diameter of the tube body (1) is 3.1 mm to 5.0 mm; the outer diameter of the bracket (2) is 4.9 mm to 5.0 mm; and the inner diameter of the bracket (2) is 6.0 mm to 6.2 mm.

12. An electronic atomization device, characterized in that: It comprises the atomizer (20) according to any one of claims 1 to 11, and a power supply unit (10) electrically connected to the atomizer (20).

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