GB2611209A - Heating assembly, atomizing core, and aerosol generating device - Google Patents

Abstract

A heating assembly (31). The heating assembly (31) comprises: a substrate (311); at least one heat generating element (315), the heat generating element (315) being formed on the substrate (317); at least two electrical contacts (317), the electrical contacts (317) being formed on the substrate (311), and the electric contacts (317) being electrically connected to the heat generating element (315); and at least one heat barrier structure (314), the heat barrier structure (314) being formed on the substrate (311) and located between the heat generating element (315) and the electrical contacts (317). The present invention further relates to an atomizing core (30) and an aerosol generating device (100). The heating assembly (31), the atomizing core (30), and the aerosol generating device (100) provided can limit heat loss of a hot area and avoid the extremely high temperature of a cold area, thereby improving the atomization efficiency and reducing heat resistance requirements of the heating assembly (31), the atomizing core (30), and the aerosol generating device (100) for the electric contacts (317).

Description

1.EATINGAS.SEME.IXATOMJZINGCOREANDAEROSOL OENE:RATrNCI DEVICE

TECHNICAL FIELD

[OD I Ib.. present disclosure relates to the teehntal field of aerosol generating dew particular to a heating assembly, an atomizing core and an aerosol generating device.

C KGROUNID

[00 21 Th ing device is airily composed of two atomi 7 core and a batters etubi 37rile 'at° Mi Z COfC.

i generally Includes an atotnizt g core and al 'Mil storage chamber. The iquid storage ehamber stores the e-liquid, and ft ore absorbs the e-liquid from the liquid storage chamber for atomizing to form smoke, The liquid guiding member and the heating assembly in the atomizing core are the core components of the atomizing technology, 'vvhich play a decisive role in the taste ol the aerosol generating device. The heating assembly is configured for heating the e-liquid transported from the liquid guiding member to the heating assembly, so as to atomize the c-liquid to generate smoke. However, the heat distribution in different areas of the heating assembly common used in the prior art cannot be regulated, and the heat loss us, thereby seriously red wing thea atomizing efficiency. In addition; in the prior art, the dge area of the heittl tidily is proii'ided with eilectricil contacts for connecting to an external because the temperature of the edge area of the heating assembly in the pri high, the heating assembly in the prior art has to meet high requirements ii for the electrical contacts. power source; also very at resistance

IARY

[0003J In AV f abov the present disclosure prov ides in a first aspect heating, asse bly capable Qf tiling heat ss.. linpro atomizing effieiencY and having low heat resistance equirements for he electrical contacts.

)041 A heating assembly for being used in an aerosol generating d ice include [0005] a substrat [0006] a least oneheat generating element wb in the heat generating element is linmed on the substrate; 100071 at I east two electrical contacts wherein al C011 are formed on the substrate. the electrical contacts are el jeans/ connected to the heat e element; [00081 at lcat CrIC heat insulation structure, wherein the heat insulation structure is formed on the substrate. and -atec...-: between the heat generating element and the electrical contacts.

[0t) 091 In t'ne emuc1inien[. the heit enerating element is arranged at the center '1 the substrate, at c electrical contacts arc arranged at the ends of the substrate.

100101 one embodiment, the heat insnlation structure is located on one s.ide of. the heat generating element, and the at least two electrical contacts are located at one end of 1 substrate away from the heat.ge [0011] In one embodiment the heat insulation structure cavitv.

[00121 In one enibtidiment, a group of at ca med on both sides of each heat generating. elcmcm, and a side of each group of air ca ics away from t he heat genetating element is formed with one he electrical contacts.

100131 In one embodiment the heating assembly is divided into cold area a hot area and transition area the hem generating element is arranged in the hot area, and the electrical cunttch are arranged in the cold area, the heat insulation stiuciuw Is arranged sition area.

[00141 In one embodiment, the substrate includes a first main surface and a second ma surface which. are oppositely dispose(, tvod irections perpendicular to each other defined on the substrate parallel to the first main surface or the second main surface: a first direction and a,sond direction; the substrate includes two opposite rust, side edges in e^tion. and MO opposite second side edges in the second direction, in the first directio ach of the air casthes includes two opposite third side edges: in the second direction,each c air cavities includes two opposite fourth side edges; the two third side edges are parallel to the two first side edges, the two.fourth side edges are parallel to second side edges.

[0015] In one embodimen he second dheetion, the distance between the. second side edge and the folirth side edge of the air cavity adjacent to the second side edge is IA71. the distance between the two fourth side edges °leach air cavity is VV-i, the distance between two adjacent ait,eayitiesHia: \s:Vti,:ttle. istanee between the two seciuld side edges of the substrate is W, then, W=21A.TI+niViT2--tm-1)W3t (tuW2)/W>40%, NV 3 W > 150%; m is the number of the air cavity, m is a positive integer and m 1..

[00161 in one embodiment, in the first difeet/Q11 XI, the distance between opposite side edges of the hot area is Lf.. the distance between the two third side edges ot each air cavity. is. 1.2, then 1.211./>6011).

[0017] in one embodiment the heating assembly further includes a plurality of release holes, the release hole penetrates through the substrate and is located in the hot area.

[0018] The presellt disclosure provides, hi a second aspect, an atomizing core. The atonlizing core includes a liquid guiding member, and ti e. atomizing core further includes the beating asserribly acctirihng to the first aspect of the present disclosure.

100191 The present disclosure prcivides. fit a second aspect, an aerosol generating device which includes a battery asiscnibly, an aid] ow passage, and the atomizing core according to the Second aspect of the present disclosure; wherein the airflow passage iS communicated with the atomizing chamber; the airflow passage is configured to discharge an aerosol flowing out of the atomizing chamber to the outside for a user to inhale; the battery assembly is electrically connected to the heat generating element, the battery assembly is configured to provide the heat generating element with electrical energy required to atomize an aerosol -forming substrate.

[0020] An aerosol generating device includes a battery assembly, an airflow passage, and the atomizing core as described above; wherein the airflow passage is communicated with the atomizing chamber: the airflow passage is etmligured to discharge an aerosol flowing out of the atomizing chamber to the outside for a user to inhale: the battery assembly is electrically connected to the heat generating element, the battery assembly is configured to provide the heat generating element tvith electrical energy required to atomize an aerosolformi ig substrate.

100211 The heating assembly provided by the disclosure includes a heat generating element a heat insul ion st t bet'kee filled -with a and electrical contacts, and the a1r cavity is arranged r cavity can Lhe Electrical contacts and the heat generating element Because the air cavi r and the thermal conductivity of.air is low therefo heat loss of the hot area and prevent the heat of the hot area from rapidly transferring to the cold area to cattse the temperature of the cold area to be too high thereby not only improving the atomizing cftieicnn-of the atomizing core and the aerosol generating device but also reducing the heal reststain, e requirements of the healing asseniblythe atomizing re and < erosol generating device for the electrical co 13121EF DESCRIP ION 0 RAW IN GS 100221 FIG.I by an embodimen r0023I FIG, 2 [00241 FIG. 3 assembly, iC cross sc.tional view of an cos& generating dcd he present thsclostue iew of a heating a,iertibly shown in FIG I iagram showing the resistanc s of different areas ol a heating [002$ FIG. 4 16 a plan vie of a othcr heating assembly shown. in FIG. 1.

100261 FIC3,5 shows the in fired (IR) c.brtCtisticS of the heating assembly shown in F10.

4 at 550°C, [00271 FIG. 6 is a plan iewof another heating assembly.

100281 The part names and reference signs shosAm in tht figures are as Co aerosol generating device 100 first side edge: 3111 atomizing co 11.0. second side edge 3112 housing assembly 10 first mainsurface liquid stotagc chamber c id main N ur fa et Ai liquid ii opemni 131 heat insulatit adult< cavity 14 liquid outlet 132 third side edge 3141 m zing chamber 14 fol.n dh,ide edge If 42 smoke outlçt 141 heat generating element 5 battery chamber 15 releasing hole 316 airflow passage 16 electrical contact 311 air cutlet t liquid guiding member 32.

atomizing core 30 absorbing surface 321 heating asset Lily 31, 31a, 3 lb, 31e atomizing surface 322 hot arca 301 batteiy asenthR 40 transition area. 302 mouthpiece. 50 cold aiei 303 hed msnlanng layer 60 substrate 311 liquid absorbing member 70 [00291 The following specific embodiments: will tart ler ustratc the p sent di los conjunction with the above-mentioned accompanying drawings.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

100301 The thllowing willclearly and c embodiments of the present disclosure in c PI lydes.ctibth.e technical solutions in the ction with accompanying. FIGs. 1-6, It is apparent that the described embodiments are only some of the embodiments of the present disclosure-but not ail of.thetn. Based on. the implementation described in the disclosure, all other implementations obtained by persons of ordinary skill in the art without creative efforts should fall within the protection scope of the present disclosure.

100311 It should be noted that when an element is referred to be "connected" to nether element, it May be directly connected to the other element or there may be an ning element therebetween.

100321 thi.lcss otherwise defined, all tech!' and scientific terms used herein have the same ineanmg as commonly understood by one I ordinary skill in the technical field of disclosure. The terminology used herein M the description of the disclosure is only for the purpose of describing specific implementations, and is not intended to limit the disclosure. 10033] Please refer to FIG. U the first embodiment of the present disclosure provides an aerosol ge ring device 100. The aerosol genera ting device 100 includes using -embly 10 an atomizing core 30 and a battery assembly 4 The atomizing core 30 and the battery ssemblit 40 are cceived in. the housing assembly 1.0, and the bittery is.semb:ly 40 is electrically cunnectedl to the atomizing core 30.

1_0034 the housing assembly 10 includes a liquid sharatTe chain er 13, an atoll chamber 14, a battery chamber 15, and an airflow-passage 16. 1.00351 In one embodiment, the aerosol generating deltic core 110. Specifically, the atomizing core er.inctudesan atomid noragc chamber 13., the atomizing chant D 4 and the atomizing core 30 Further, the aerosol gener ice 1100 may also include the batten chamber 15 the airflow passag e 16, the atomizing c ore 110 and the battery assembly 40.

100361 In other embodiments, the battery hamber 15 may also not be indudèdiniheiousirg assembly 10, but is detachably installed with the housing assembly 10. That is. the battery. assembly 40 and the atomizing core 110 ate detachably stalled [00371 It can he understood that, in °Met cinbodmients, the atomizing core 110 may be provided separately from the liquid storage chamber U. For exarimie, the ato core lit) stalled with the. battery asscm bly 40, and the liquid storage device. with the liquid storage chamber 13 is provided separately.

100381 The liquid storage chamber 13 is in communication with the atomizing chamber 14, and the atomizing chamber 14 is in communicationwith the a aassage 16..The liquid smoke flowing out of the atomizing chamber 14 to the outside for inhalation by the user. 100391 In one embodiment a liquid injection opening 131 is thrmed cu. the outer wall of the hquid storage chamber 13, A liquid outlet 132 is formed on the inner wall of the hqwd stoiige liquid injection op oiling 131 is configured for in cetino c- iquid i liquid storage'chain her 13. The liquid outlet 132 is in fluid communication with t he atomizing core 30. The liquid storage chamber 131in PQPip1iwiCatPP with the atomizing chamber 14 through the liquid outlet 132. The c-liquid. in the liqui d storage chamber 13 enters the miser 13 c 011 figured For storing e-quid, The n iirig*.***chambet, ********* for receiving the atoiniz chamber 15 is c eiving the battery assembly 40. The airflow passage 1 6 is configured to discharge the atomizing core 30 through the liquid outlet 132, and the atomizing core 30 is configured to atomize the eliquid to gaerau smoke.

10040] A smoke outlet 141 is formed on the chamber 14. The atomizing chainbr 14 is in comununication with the airflow passage 16 through the smoke outlet 141. The smoke outlet 141 is configured to enable the smoke formed by the e-liquid entering the atomizing.core 30 aml being atomized hey the atomizing core 30 to flow into, the airflow Passage 16, 100411 An air outlet 161 is prosided on the wall of the S confiuurect to e user: to inha(c.

100421 in other cmh duncois. the housing assemb 10 is also formed skffli an air midt hawn).. When using the above-mentioned aerosol generating device 100, the e nal air S from the air talet, the smoke obtained through atomization bv the atomizing core passe hrough the air lo -pasae 16 with the airflow and is exported from the air outlet 161 for the user to inhale.

[00431 S pecifically, the ato g core 30 isconfigured to atomize the e-liquid delivered to te atomizing core 3( 0 Ate, The atomizing core 30 includes a heating assembly 31 and id guiding member 31 The heating assembly 31 is provided an the liquid guiding member 32, the liquid guiding member 32 IS fixed on the inner wall of the atomizing chamber 14 and is in fluid communication With the liquid outlet 132. The liquid guiding member 32 is configured to transmit the e-liquid in the liquid storage chamber 13 to the heating assembly 31 and store the e-liquid temporarily, The liquid guiding member 12 includes an absorbing surface 321 and an atomizing surface 322. The absorbing surface 321 faces the liquid outlet while the atomizing surface 322 is opposite to the absorbing surface 321,. The heating assembly 3 is ed All the atom 173 U g surface 322 of the fit tid guiding member 32 to heat atd.atomiz e the e-liquid transmitted from the liquid guiding member 32 to the heating assembly 31.

[00441 Specifically the heating assembly 31 is ptpytded on the liquid guiding member 2 by directly fixing, wrapping, winding and the like. In this embodiment, the heating assembly 31 is directly fixed on the liquid guiding member 32.

oke to flow fro flow pas:sage 16, The' air antle 61 passage 16 to the outside for the [0045] The liquid guiding member 32 all elénienthavmg the fiute1ioll of absorbing e. .Iiq an ransporting e-liquid, such a on, glass fiber, porous ceramics the like.

[0046 The battery assembly 40 is received in the battery chamber 15 and electrically connected to the heating assembly 31, The battery assembly 40 is configured to provide the heating assembly 31 with electric energy required to atomize the e-liquid, [00471 In this embodiment, the aerosol generating device 100 further includes a mouthpiece 50, The mouthpiece 5, in communication with the airflo v Passage 16 through the ltir outlet 161 The smoke flowing out th ro ugh the air outlet 161 o f ihe airflow passage 16 flows out through the mouthpiece for the ser to inhale. In other embodiments., the aerosol generating device 100 may not include the nouthpiece 50.

[00481 In another embodiment, the aerosol gen;eraiing device 100 further includes a at Msulating 7er 60. The heat insulating layer 60 is disposed on the wall of the passage 16. The heat insulating, layer 60 is beneficial to preventing the beat loss the airflow passage 16, thereby preventing the smoke from rapidly cooling and condensing into e-liquid on the inner wall ofthe airflow passage 16 caused by the rapid temperature drop in the airflow passage 16.

100491 In anothe bodiment the aerosol generating devic.e 100 further includes a liquid absorbing member 70. The liquid. absorbing member 70 is arranged on the heat insulating r 60, and the liquid absorbing member 70 is configured to zibsorb condensed e-fiquid.

)ecifically, the*liquid absorbing member 70 is a hollow columnar Aker shape. The liquid citing member 70 is made of porous materials, such as superabsorbent resin, sponge cotton, paper. porous ceramics or other porous materials.

100501 In another embodiment,. the aerosol generating device 100 absorbing member 70, The I quid absorbing member 7 is arranged airflow passage H. which is not shown.

[00511 Please refer to FR;. 2 the first embodiment of the present disclosure prov uk beating assembly. 31a. The he assembIY 31a includes., a substrate 311 and a teat Illation structure 314, at least one heat generating element 315 and at least two electrical icr includes a liquid the inner wall of the contacts 317 formed on the substrate 311 wherein tile heat insulation structure 314 is located between the h eat generating element 315 and the electrical co 7 The heat generating element 315 is configured to generate heat, so as to heat and atomize the e-liquid transmitted from the liquid guiding member 32 to the heating assembly 31a, The electrical contacts 317 are electrically connected to the heat generating element 315. The heat insulation structure 314 is configured to reduce or prohibit heat transfer between the electrical contacts 317 and the neat generating element 3 as to limit the heat lo$s caused by the hen gcneratma element 315 and prevent the heal generated by the heat generating element 315 from rapidly fling to the =electrical contacts 317 to cause the temperature of the electrical contacts 317 to be too nab. The forms of heat transfer include radiation, conduction, and COLIVCCtiOn. hi this embodiment, the heat generating element 315 is electrica connected to the elect contacts 317 through conductive wires 318. The conductive wire 318 includes but not limited Paste, metal film, and lead, The heat insulation structure 314 may be a structure with berrnal condutW it> such as a heat insulating layer, a heat insulating member. or an air cavity. The heat insulating layer may be formed on the su rface of the substrate 311" or formed inside the substrate 311. The heat insulation structure 314 is made of a material with low thermal conductivity, or a part of the substrate 311 is directly made al a. material, with low thermal conductivity, The heat insulation structure 314 can be formed by methods including but not limited to chemical etc hinu, laser etoimig, electroplating, physical vapot deposi and chemical vapor deposition. Optionally, the heat insulation structure 314 is an an cavity, Therefore, in this embodiment, the heat insulation structure 314. is st one group of air cavities. 314,. The air cavity 314 penetrates through the substrate 311 along the thickness dIrection of the substrate 3 and the air. cavity 314 is in contact with the external air.

1011521 The substrate 311 is roughly in the shape of a thin sheet or a thin plate, and has a y air 31 I can be first main surface At and a second main surface A) which are opposite understood that the first main surface At and the second main surface A., may he circular. pt15t,. or polygonal such as triangular, rectangular, Ira pezoidal3 pentagonal, etc which not limit ed here. Op tactilely, the first main surface At and the second ma iisttrface A2 are substantially planar.

[0053] Specifically, the material for preparing the substrate 311 may he metal oxide, nitride, carhid e or the like. Optionally, the bstra C 311 wide of ceramic: mat fu h the material of the substrate [O.QS4f Two directions peg to the first main surface second direction X2. The sub airection Xi and two opposite embodiment, the first main surface A1 o side edges:3111 are perpendicularly con tr subs e 311 parallel and the he substrate cted to the two t side edges 311 in the first he second direetion S: rectammlar and the econd side edges 3112. Tn..othei endicular to each other are defined on t the second main surface the first directio ate 311 theludes two oppos embodiments, the first main surface Ai of the substrate 311 may also be in other polygonal Or: circular s apes, so that the substrate 311 also includes other side edges the two first side edges 31 and the two second side edges 3112 are respectively connected to at least one other side edge. If the cross-section of the substrate 311 is circu1ar the first side edges 3111 may be simplified as two tangent points in the first direction X1, and the second side edges 3112 may be simplified as two tangent p onits in thesecond direction Xi. A third direction X3 iS defined along the. -v-ertical direction of tlic first main surface Ai, and file third direction X3 i the thi ckness direction.. of the substrate 311.

10055] In this embodiment, the substrate 311 has a thickness of about 0.4 mm: a total wid 2.0 nun, and a thermal conductivity of about 3 Wm-1K* In this embodiment the heating Tnbly 31a includes two groups of fi)ui-air cavities 314 and twc, electrical ci)ritacts 317. The two groups of air cavities 314 are respectively arranged on both sides of the heat lig element 3 1 J, of air cavities 314 away from t generating element 315 is arra contacts 317 are arranged at the [00561 In this embodiment; the direction X,.

[00571 Specifically, in the fit-neat contact 3.1.7 is provided on one side of each group heat erbibit e*Jelbeet 3t5. In. on.e embodieteet.,*Etbetbern * ter of The substrate. :2 II, and theEE.elettrical s.eb gip* .are aligned ia the soeeEad.

rection Xt,. e.a:cti..o.t air cavities 314 includes two opposite third side edges 3141, and in the second direction each of t le air cavities 31.4 includes two opposite fourth side edges 3142. The two third side edges 3141 are parallel to to o first side edges 3111, nd the t' o finirth side edgesare parallel to the two second side edges 3112.

[0.05Sf In this embodiment, the first main surface A1 of the substrate 311 r angul* two first side edges 3111 are perpendicularly connected to the two second sid The cross-section of the air cavity 314 on the first main surface A1 is also reel 3112.

natiar. The two arc perpendicularly connected to Mc INV() fourth side edgcs 3142. rst direction XI is the length direction, and the second direction X2 In this ernbodirneu S the 1th dice on.

[00591 In other calbodinients, thecross-section: of the a -slily 4 on the first main surface Ai may also be in polygonal or circular shapes, and he ir cavity 314 also includes other side edges, and the two third side edges 3.141 and the two in th side edges 3142 are onnected to at 1est one other side e cross-section of the air cavity 314 on the &st maul SUIthee At is circular, the third side edges 3141 can be simplified as two tangent points in the *first direction Xi, and the fourth side edges 3142 can be simplified SS: two tangent points in the second direction X2.

[0060] In the first direction Xi, the heating assembly 1 vided into ar least one cold Brea 303, at least one transition area 302 and at Mast one hot area 301, wherein one end of the transition area 302 is connected to the cold area 30 the other end of the transition area 302 is connected to the hot area 301. Specifically,the cold area 303 refers to the area jointly enclosed by the ti. dde does 1111 skin line RR' of the third side edge 3.141 of at least one air:cvity 314 adjacent to the electrical contact 3174 and the first bide edge 11 adjacent to the rical contact 317. The transition area 3.02.refers to the area jointly enclosed by the two second side edges 3.112.citid the extension lines RR and.QQt U opposite third. side edges 3141 4.5 at least one an cavity 314. The hot area 301 a the area jointly enclosed by the two second side edges the extension lines PP' and Q Q of the third side edges 3 141 of the air cavities 314 located at opposite sides of the heat generat la element 315, or refers, to the area jointly enclosed by the two second side edges 3112, the extension line PP' of the third side edge 3:141 of at least one air cavity 314 p. adjacent to the heat generating element 31, and the first side edge 3111 ad acent to the heat genetatiigHehhwnt 315. The electrical co 317 is located cold area 303. the air cavity 314 is located in the transition area 302, the heat generating element 315 is located in the hot area 301.

[0061] Tit this embodiment, the heating assembly 31a is divided into two cold areas 303, to transition areas 302 and a hot area 301. ii can be understood that in the present disclosure, a trawAtion area 302 is provided between the hot area 301 and the cold aica 303. Thus during the transfer of heat from the hot area 301 to the cold area 303, due to existence of the eat is stopped in the direction of transfer, and the temperature drops the temperature of the CO rea 303 is kept at a relatively low. level.

Optionally,. the temperature of the cold area 3( 18 below 100ce. lii this embodimeid, the hot nsitton za*302,Etheli sharptv.. so that area 301 refers to the area enclosed by the two second side edges 3112, the extension lines PP' and QQ1 of the third side edges 3141 of the air cavities ent;15 the heat generating 100621 Please continue to refer to FIG 2, in the et.ond direc he distance between the second side edge 3112 and the fourth side edge 3142 of the air cavity 314 adjacent to the second side edge 3112 is Wz.; the distance between the two fourth side edges 3.142 of each cavity 314 is the distance between two adjacent air.cavit.ies 314 is W?, the distance between the two second side cc,,,e:;i4r1,E.OfEthe],s1thtito W-'1-1111\11-1 ilt,:eptiOnaltycH(niW:2):AV11140%,::W --1.s()%, so as to ensure that the air cavity 314 1 sufficient resists in...'e to heat wherein in is the number of the air cavity 314, positive er and m_e, I. In this embodiment. m=2.

[0063] The cross-sectional area of each of the air caities 314 on the fust main surface A is A. the total cross-sectional area of the first main surface AI of the substrate 311 IC ratio of the total cros,i-sectional area ink] of the air cavities 314 'tofl the total.cros.s* sectional of a:StbSttatei 3;111,1S:dalitiad ty index L f the hcatittg asseinblv 31 wherein the quality index E can reflect the thermal decatpling efficiency of the heating assembly 31a, Optionally, the thickness of the heating assembly 31a may be selected to be 0.1inm-5mm, then E=inaAWAS>15%. That is, when the thickness of the heating assembly 31a is 0 1 mm t the quality index E of the air cavities 314 must be greater than 15%, so as to ensure that the air cavities 314 can effectively stop the heat of the hot area 301 from transferring to the cold area 303.

10064 Please continue to refer to FIG. 2. in one embodiment. in the first direction XI, the distance between opposite side edges of the hot area 301 is Li. the distance -between the tWO third side edges 3141 of each air cavity 314 optionally, 1_,ILI>60%. Optionally, L, is 6ntm. This struchtre caa achieve effective thermal decoupling.

100651 The beat generating element 31,5 can be an embedded thick film resistance heater, a heating coating, a Ii ea ting coil, a heating sheet, a heating net and the like. Specifical ly, the material for preparing the heat geuerating clement 315 may be noble metal or common metal Or conductive oxide. Specifically, the noble metal may be ruthenium, platinum, gold, silver, palladium or their alloys. The common metal can be copper or nickel and the like, The conductiVe OXide may be ruthenium oxide or the like, In this embodiment, the heat generating element 315 is made of platinum. Sped-neatly, the thermal conductivity of the heat generating element 315 is about 72Win-IC. In this embodiment, the heat generating element 31) is two embedded thick film res istance heaters. Specifically, the heat generating clement 315 has a thickness of 0.01mm and a width of 0.6mm, 100661 In the first direction XI, the distance between the first side edge 311 1 and the bird side edge 3141 of the an cavity 314 adjacent to the first side edge 3111 is defined as Li then ii should be long enough to facilitate the installation of the electrical contact 31 7. The area of the electrical contact 317 must be large enough to be compatible with standard electrical contacts in the atomizing Core 30 of the aerosol generating device 100.

100671 The heating assembly 31a further includes a plurality of releasittg holes 316. The releasing hole 316 penetrates through the substrate 311. tione-, the third direction X3 and is located in the hot area 301, The releasing holes 316 ai-e arranged corresponding to the liquid guiding member 32, and are configured for releasing the smoke generated by the atomization of the heat generating element 315 into the atonnvin,g chamber 14, 100681 Please continue to refer to FIG, 2. the cross-sectional area of each releasing hole 316 is define as Esa,;" then optionalhy. the ratio of the total cross-sectional area ia,k; of the releasing holes 316 to the total cross-sectional area A1 *of the substrate satisfies: 0.03% r.-SnAtiA2,1".: 9.00%, wherein i IS umber of the releasing holes 316 is a pus tve integer and Specifically, the ratio of the total cross-sectional area of the releasing holes 316 to the total cross-sectional area of the substrate 311 is a quality factor of the re:leasing holes 316 and can be used to characterize the effectiveness of the releasing holes * 316. It should be noted that, the cross-section corresponding to the cross-sectionai area is parallel to the first Inaba surface Ai or the first main surface A2.

I00691 The radius of each releasinz ho ned as n then optionally, 0 L Such arrangement is beneficial to release the smoke generated by the atom at of the heat generating element 315 into the atomizing chamber 14.

100701 in one embodiment, in the first direction X b th hort:est..ditance fnMl the edge of the releasing hole 316r adjacent to the air cavity 314 to the edge of the adjacent air ea 314 is defined as Lt. L3.11-1>10%. In one embodiment, in the second direction X2, the CI--from the edge of the releasing hole 316 adiatient to the first side edge 311 to the a ac ent second side edge 3112 is defined as L.4,1-4Thl>10%, Such arrangement is beneficial to release the smoke generated by the atomization of the heat generating element 315 into the atomizing e hamber 14.

100711 Please refer to FIG 4, a heating assembly 31h ispro'ded in thesecond embodiment le present disclosure, the s ructure of the heating assembly 3similar to that of the heating assembly 31a, the only difFerence is that the an cavities 314 are only arran side of the heat generating element 315. The electrical contacts 317 are all located at one end of the substrate 311, and are not separatek located at both ends of the substrate 311, so the heating assembly 31b has a larger heating area 100721 In this embodiment please refer to FIG. 3 and FIG. 4 the resistance value heating assemblv 31a can be calculated by the following formulas; 1007 Rater-a thridqp Formula 1 [00741 11 a [00751 100761 wherein is the absolute thermairesistance, is the length of the air-it v 314 in the first direction X, (th s in FIG 2 L ka is th e thermal canducti y of the material or the air, I is the thlc.kncss of the heating assembly 31a, WI is the width of.caeh part and in the present embodiment W corresponds to % , and W3 described above.

Therefore in this embodiment, the total thermal resistance Rbnat. of the heating assembly 31a is composed of several resistances connected in pqrallel" in ding the resistance (Mils ±1C3r2) of the two groups of air cavities 314, the t esistanee Rceutel substrate 311 between the two groups of air cavities 314, the resistance Its,iel and 'resistanec Its,k2 of the substrate 311 between the air ca itics 314 and the corresponding two first side edges 3111. and the resistances Rpti and Rpt, of the contiuctit e wires 318. In this embodiment, the total width W of the substrate is 12.0mm, W;, %V2 W are 3min '4mm and trim respectively, the embedded thick film resistance heater has a thickness of 0.0Imm and a width of 0.6mm, the length of the an cavity 114 is 5t-rim. The substrate 311 has a thickness of about 0.4111M, a total width of 12.0mm, and a thermal conductivity of about Wm' . Inc material of the embedd.ed thick film resistance heater is platinum, and the thermal condu -tivity of the embedded thick film resistance heater is about 72WM-110. The thermal conductivity of the air in the air cavity 314 is about 0.04 *Wirt-11(4. In this embodiment, the thermal resistance of each air cavity 314 is 463KW-. [00771 Please refer to FIG. 5. 11G. is rn IR charac diagrani of the heating asSembly 31b shown in FIG. 4 when working at 550C. It can be seen from the figure that the.i rciviiv 3.14 is ttsed't o realize the transition between the heat generating element 315 and le electrical contacts 317 of the heating assembly 315, so that the temperature of the cold area 303 can be maintained below I 00t, while the hot area of the heating assembly 31.5 is maintained at a temperature of 5500çto 560ec, This shows that the heating:.ass.eiibiy 3 lb h as good heating uniformity and a lower level of heat tiansier, so that the hot area 30 where the heat generating element 315 is located and the cold.arca 303 where the el contacts 317 are located can be effectively 'isolated, [0078] Please refer to FIG, 6, a heating assembly 31c is pro).ided in the third embodiment present disclosure, the structure of the beating assembly 31c is similar to that of the ug assembly 3 lb. the only dilfe e is that the two air cies 314 are aligned in the first diree tion Xi.

[00791 The heating assembly provided 1hy the disclosure includes:a heat generating dem a heat insu lation structure (air ca'ity) and electrical contacts, and the air cavity is arianged between the electrical contacts and the heat generating element, Because the air cavity is tilted with air 4nd tue thermal conduc ti d of air is low, therefore, the air cavity eau liniit heat loss of the hot arez and prevent the heat al the hot area from rapidly transferring to the cold area to cause the temperature of the cold area to be too high, thereby not only improving the atomizing efficiency of the atomizing core and the aerosol nerming device but also reducing the heat resistance requirements of the assembly, the atomimg tore and the aerosol generating device for the electrical contacts, [0080] The present disclosure also provides a method for manufacturing a heating assembly including: 100811 Step forming substrate by casting, [00821 A mixt c powder and organic component is c into substrate with a thickness of 0.2 mm to 2 min. 100831 Step 2: processing the substrate to form a desired struetu [ strip-shaped substrate is cut into a desired e so as to be used for a heatino as-94111W; [0085] A heat insulation structure is formed on the substrate by laser cutting or process., and the beat insulation structure may be an air cavity,. or a beat insulating me and the like.

100861 Optionally, this step may also include foinung releasing holes at or electrical us through holes du the substrate by laser cutting stumping.

100871 Step 3: pnntiag a heat generating and electrical contaUs on the substrate.

[0088 This step includes printing the hcat generating element (resistance heating material) of a required pattern and the electrical co acts on the subsu te to form a semi-finished product by screen printing process.

[00891 Thc electrical contacts indude electrical puds Further, this step also includes printing conducti-ve xures on the substrate the conductive wires are configured to connect e heat generatin a element to the electrical contacts [00901 Step 4: drying the semi-finished product obtained in step 3.

100911 Step 5: stacking the semi-finished products obtained after drymg in step 4, wherein the heat generating element is embedded inside the substrate, and the electrical contacts are 1 on the surface of the subs [0092J Step 0: thermally con/messing the rushed products obtained in step S at a pent of 4tre-100°C,. and then sintering at a high temperattire (800c-V -1600 remove organic components and finally to become a whole.

100931 The above descriptions are only preferred embodiments of the present application, and do not limit the present application in any form. Although the pies a has been disclosed above with piefeired embodiments, it is not intended t application. The per,,trns skilled in the art may make some changes or To technical content disclosed above, and if they do not depart from the technical. content of the present application, any simple modifications. equivalent changes and modifications made to the above embodiments still.fa.n..:ciithI n the protection scope of the technical solution of the present application.

present no.; by using

Claims (2)

1. What is claimed is.A heating assembly a substrate; at least one heat the substrate, at least two electr the electrical contactCLAIMSor being used in an aerosol generating deuce, coniprising aerating element whetei heat generating element is formed on contacts, wherein t electrically connected to the beat generating anent * e formed on the subst ectrieal co at one beat insuladon.structure, wk.rcin I heat nsulation structure is formed on the substrate and located between the heat generating clement and the electric-a contacts.
2. 2. The heating assembly according to claim I the heat generating del it the ecnter of the substrate and the electrical coutaets are arranged at the t rate 3. The heating assembly accord la im 2, wherein the beat. insu a u e tilted on one side of the heat generating eleme, and the at least two electrical contacts are located at one end of the substrate away from:th:e heat generating rating element.4. The heating asemMy accor aim in the. heat. iu, aticin structure 1 cavi The heating: assembly according to claim 4, wherein a group formed on both sides of each heat generating element, and a side of CS arc p b group o it cavities away From the heat generating element is formed with one of the electrical contacts, 6. Th.-0:"*4.§.44t n4 asst.mbly according to claim I wherein the boating assembly is d into old area a hot area and a transition area, the heat g.neratrng element is arranged in the Is hot and the electrical contacts afe.anahged in the.d heat insUlation strut: 1.d in the transition area.7. TM heating assembly of c ai lain surface a other are defined on the subst /herei.n the substrate comprises a first main 's'ife and oppositely disposed, two directions perpendicular to each araUct to he first inaM surface or the second main surface; st direction and a second din Orion.substrate includes opposite Ii ges he hi-st direction and two opposite second side edges in the seccmd direction; in d first direction, each of tile an avities includes two opposite third side edges: in the s direction, each of the air cavities includes two app fourth side edgesi the two third side edges are pdrallel to the two first side edges the two fourth side edges are parallel the two second side edges.asseinMy f claim 7 whetein. in the seconcj.ditection, the distance betwe the econd side edge and the fourth side edge of the air cavity adjacent to the see° ance between t le two fourth distance 'Jets% een adjacent*edges aT tire stibtnte is W, then, ITI is the nuniber of the air cavil>, in is <i postine integer and an 1.9. he heating assembly according to claim 6 wherein, in the first direction X the distance between opposite e edges of the hot area IL.1,the distance between the two third.side edges of each air cavity is 1,2, then L211,1>60%, heating assembly according to e ',,EfEtitaht.-tretailaptilaing4p.iiittO Of taSehedeS,.tlease hole penetrates through the substrate and is located I n the hot area.An a n ing core comprising a lit n iember, wherein he atomizing core further comprises the heating assembly according to any one of claims to 10.ye is A, side edges of each air cavity is ics is W5, the distance between the two second side (m.W2)." W >40170, WilYir >150%; 12. An aerosol generating device comprising a battery assembly, an airflow passage, and the atomizing core according to claim 11; wherein the airflow passage is commtmicated with the atomizing chamber; the airflow passage is configured to discharge an aerosol flowing Q ut of the atomizing chamber to the outside for a user to inhale; the battery assembly is electrically connected to thc heat gchcfluing clement, the battery assembly is configured to provide the heat getter:Min& element with electrical energy required to atomize an aerosol-fuming substrate;