Nozzle, atomizer and electronic atomization device

Abstract

The invention discloses a nozzle, an atomizer and an electronic atomization device. The nozzle comprises a spraying part and a heating body, and the spraying part is provided with an atomization cavity, an air inlet channel and a liquid inlet channel, gas entering the atomizing cavity from the gas inlet channel collides with an aerosol generating matrix entering the atomizing cavity from the liquid inlet channel and then is atomized to form aerosol; a mist outlet of the atomization cavity enables aerosol to flow out of the mist outlet; the heating body is integrated on the spraying part, at least corresponds to the liquid inlet channel and is used for heating the aerosol generating matrix of the liquid inlet channel, so that the viscosity of the aerosol generating matrix is reduced, the flowing rate of the aerosol generating matrix in the liquid inlet channel is guaranteed, the channel is prevented from being blocked, and the atomization effect is improved. And meanwhile, the aerosol is prevented from condensing and refluxing at the outlet of the nozzle, the problems of large liquid drops and liquid accumulation are avoided, and the service life of the nozzle is prolonged.

Description

Technical Field

[0001] The present application relates to the field of atomization technology, and in particular to a nozzle, an atomizer and an electronic atomization device. Background Art

[0002] In the related art, an electronic atomization device is used to atomize an aerosol-generating matrix into an aerosol.

[0003] Nozzle atomization is a method of atomizing the aerosol-generating matrix into an aerosol. However, the nozzle atomization method currently used has a large viscosity of the aerosol-generating matrix when the temperature fluctuates greatly, which is easy to block the channel and affect the nozzle atomization amount. At the same time, when atomizing at room temperature, the aerosol is easy to condense and reflux at the nozzle outlet, generating large droplets and accumulating liquid. Summary of the invention

[0004] In view of this, the present application provides a nozzle, an atomizer and an electronic atomization device to solve the problems in the prior art that the viscosity of the aerosol-generating matrix is ​​relatively high, blocking the channel, affecting the nozzle atomization amount, and condensing and refluxing at the nozzle outlet, generating large droplets and liquid accumulation.

[0005] In order to solve the above technical problems, the first technical solution provided in the present application is: a nozzle is provided, comprising an injection part and a heating body, the injection part having an atomization chamber and an air inlet channel and a liquid inlet channel respectively connected to the atomization chamber; the gas entering the atomization chamber from the air inlet channel collides with the aerosol generating matrix entering the atomization chamber from the liquid inlet channel and is atomized to form an aerosol; the atomization chamber has a mist outlet, so that the aerosol flows out from the mist outlet; the heating body is integrated on the injection part and is at least arranged corresponding to the liquid inlet channel, and the heating body is used to heat the aerosol generating matrix in the liquid inlet channel to reduce the viscosity of the aerosol generating matrix.

[0006] Wherein, the heating body is arranged on the inner surface of the side wall of the liquid inlet channel and / or the outer surface of the side wall of the liquid inlet channel; or the heating body is a part of the side wall of the liquid inlet channel.

[0007] Wherein, the heating body is also arranged corresponding to the air inlet channel; and / or the heating body is also arranged corresponding to the atomization chamber.

[0008] Wherein, the height of the liquid inlet channel is 50-500 μm.

[0009] Wherein, the injection portion comprises a main body substrate and a cover substrate, the main body substrate comprises a first surface and a second surface arranged oppositely, the second surface has an atomization groove and an air inlet groove and a liquid inlet groove respectively connected to the atomization groove; the cover substrate covers the second surface, and cooperates with the atomization groove, the air inlet groove and the liquid inlet groove to respectively form the atomization chamber, the air inlet channel and the liquid inlet channel; wherein, the heating body is arranged on the part of the first surface corresponding to the liquid inlet groove, or the heating body is arranged on the entire first surface; and / or the heating body is arranged on the bottom surface of the liquid inlet groove; and / or the heating body is arranged on the surface of the cover substrate facing the liquid inlet groove, or the heating body is arranged on the surface of the cover substrate away from the liquid inlet groove.

[0010] Among them, the main body substrate has a first edge and a second edge relative to each other, and a third edge connecting the first edge and the second edge; the atomization groove is arranged close to the first edge and has the mist outlet located on the first edge, the air inlet groove extends from the second edge to the atomization groove, and the liquid inlet groove extends from the third edge to the atomization groove.

[0011] Wherein, one end of the air inlet groove connected to the atomization groove forms a constricted structure; wherein, the liquid inlet groove includes an inlet section, a middle section and an outlet section; the inlet section and the outlet section are both narrowed relative to the middle section.

[0012] Among them, one of the two side walls of the middle section is straight-line, and the other is curved.

[0013] Wherein, the side wall of the liquid inlet groove has a first opening and a second opening; the heating body is arranged on the bottom surface of the liquid inlet groove; the heating body includes a first electrode and a second electrode; the first electrode extends to the first opening, and the second electrode extends to the second opening.

[0014] Wherein, the first opening and the second opening are both located on the side wall of the liquid inlet groove close to the first side, or are both located on the side wall of the liquid inlet groove close to the second side.

[0015] In which, the injection portion includes a main body substrate and a cover substrate, the main body substrate has a first surface and a second surface arranged opposite to each other; the second surface has an atomization groove and a fluid groove surrounding the atomization groove, and a plurality of liquid inlet grooves connecting the fluid groove and the atomization groove; the bottom wall of the atomization groove has a first through hole as an air inlet channel; the outer wall of the fluid groove has a liquid inlet; the cover substrate is covered on the second surface; the cover substrate cooperates with the atomization groove to form the atomization chamber; the cover substrate cooperates with the liquid inlet groove and the fluid groove to form the liquid inlet channel; the cover substrate has a second through hole as the mist outlet; wherein, the heating body is arranged on the bottom wall of the fluid groove; or the heating body is arranged on the surface of the cover substrate close to the main body substrate.

[0016] Wherein, the material of the main substrate is silicon, glass or metal, and the material of the cover substrate is silicon, glass or metal.

[0017] Wherein, the nozzle further comprises a sensor for obtaining detection information of the aerosol generating matrix; the detection information comprises temperature information or viscosity information.

[0018] Among them, the sensor is arranged on the outer surface of the injection part, and is used to detect the ambient temperature of the injection part, so as to heat the aerosol generating matrix in the liquid inlet channel to a preset temperature according to the ambient temperature; or the sensor is arranged in the liquid inlet channel, and is used to detect the temperature information or viscosity information of the aerosol generating matrix flowing through the liquid inlet channel, and heat the aerosol generating matrix according to the detection information.

[0019] Wherein, the heating body is a heating film; the thickness of the heating film is 0.05 μm-5 μm, and the width of the heating film is 10-1000 μm.

[0020] In order to solve the above technical problems, the second technical solution provided in the present application is: to provide a nebulizer, including a liquid storage tank, a nozzle and a micropump, the liquid storage tank is used to store the aerosol generating matrix; the nozzle is the nozzle described in any one of the above items; the liquid inlet channel is connected to the liquid storage tank; the micropump is connected to the air inlet channel, and is used to supply air to the nozzle to atomize the aerosol generating matrix in the nozzle.

[0021] In order to solve the above technical problems, the third technical solution provided in the present application is: to provide an electronic atomization device, including an atomizer and a power supply assembly; the atomizer is the atomizer described in any one of the above items; the power supply assembly is coupled to the atomizer to provide power to the atomizer.

[0022] Beneficial effects of the present application: Different from the prior art, the nozzle of the present application includes a spray part and a heating body, the spray part has an atomizing chamber and an air inlet channel and a liquid inlet channel respectively connected to the atomizing chamber; the gas entering the atomizing chamber from the air inlet channel collides with the aerosol generating matrix entering the atomizing chamber from the liquid inlet channel and then atomizes to form an aerosol; the mist outlet of the atomizing chamber allows the aerosol to flow out from the mist outlet; the heating body is integrated on the spray part and is at least arranged corresponding to the liquid inlet channel, and is used to heat the aerosol generating matrix in the liquid inlet channel, thereby reducing the viscosity of the aerosol generating matrix, ensuring the flow rate of the aerosol generating matrix in the liquid inlet channel, preventing the channel from being blocked, and improving the atomization effect. At the same time, the aerosol is prevented from condensing and refluxing at the nozzle outlet, avoiding the problem of large droplets and liquid accumulation, and improving the service life of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the structure of the electronic atomization device provided by the present application;

[0025] Figure 2 It is a structural schematic diagram of the atomizer provided by the present application;

[0026] Figure 3 It is a schematic diagram of the structure of the nozzle provided by the present application;

[0027] Figure 4 This is a schematic diagram of a first heating structure of a nozzle provided in the first embodiment of the present application;

[0028] Figure 5 This is a schematic diagram of a second heating structure of the nozzle provided in the first embodiment of the present application;

[0029] Figure 6 This is a schematic diagram of a third heating structure of the nozzle provided in the first embodiment of the present application;

[0030] Figure 7 This is a schematic diagram of the first structure of the flow channel provided in the first embodiment of the present application;

[0031] Figure 8 is a schematic diagram of the second structure of the flow channel provided in the first embodiment of the present application;

[0032] Fig. 9 is a schematic structural diagram of a flow channel provided in a second embodiment of the present application;

[0033] Fig.10 The surface temperature rise curve of the nozzle provided in this application;

[0034] Fig.11 The temperature rise curve diagram of the aerosol generating substrate after flowing through the heating body of the nozzle at different temperatures;

[0035] Fig.12 It is a module schematic diagram of the power supply component provided in this application. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] The terms "first", "second" and "first" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" can expressly or implicitly include at least one of the features. All directional indications (such as up, down, left, right, front, back ...) in the embodiments of the present application are only used to explain the relative position relationship, movement conditions, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0038] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0039] The inventors of the present application have found that phase-change-free nozzle atomization technology is a way to achieve electronic atomization. Nozzle atomization technology is a low-temperature atomization technology based on high-speed airflow, which is generally divided into pneumatic atomization or bubble atomization, and achieves the purpose of atomization through the interaction between high-speed airflow and liquid. Generally speaking, the electronic atomization device based on nozzle atomization has an air pump inside to generate a high-speed airflow channel, and is equipped with an aerosol generation matrix channel with a designed diameter to ensure the atomization effect. Phase-change-free nozzle atomization technology can avoid the problems caused by high-temperature atomization of traditional ceramic cores or porous cotton cores, such as taste, odor reduction, heavy metal toxicity, etc.

[0040] Nozzle atomization technology is greatly affected by temperature, because temperature will directly affect the viscosity of the aerosol generating matrix, and then affect the atomization performance indicators, such as atomization volume, taste, consistency, etc.

[0041] When the temperature fluctuates greatly (especially in extremely cold areas), the viscosity and fluidity of the aerosol generating matrix are greatly affected, and it is difficult to ensure the flow rate of the aerosol generating matrix in the fixed diameter channel in the nozzle. Therefore, the consistency of use of the electronic atomization device based on nozzle atomization is seriously affected, affecting the amount of atomization and even making it impossible to inhale.

[0042] The aerosol produced by nozzle atomization is at room temperature. In addition to being unable to simulate the temperature of traditional cigarettes, it also affects the restoration of the flavor and taste of some aerosol-generating matrix.

[0043] The nozzle works at room temperature. During atomization, the aerosol is prone to condense and reflux at the nozzle outlet. Not only is it easy for large droplets to affect the suction experience, but it is also easy for liquid to accumulate after atomization, affecting the service life and consistency of the nozzle, and even blocking the channel.

[0044] Under the same nozzle, a high-viscosity aerosol-generating matrix requires a larger air pump to produce a faster high-speed airflow in order to provide sufficient energy to achieve the atomization effect. When the viscosity is too high, the atomization effect cannot be guaranteed and the atomized particles are larger.

[0045] See also Figure 1 , Figure 1 It is a schematic diagram of the structure of the electronic atomization device provided in this application.

[0046] The electronic atomization device 300 provided in the present application may be an active liquid supply type, and the electronic atomization device 300 may be used for atomization of an aerosol-generating matrix. The electronic atomization device 300 includes an atomizer 100 and a power supply assembly 200 electrically connected to each other, the power supply assembly 200 is coupled to the atomizer 100, and is used to provide power to the atomizer 100, and the power supply assembly 200 controls the atomizer 100 of the electronic atomization device 300 to work.

[0047] The atomizer 100 is used to store an aerosol-generating substrate and atomize the aerosol-generating substrate to form an aerosol that can be inhaled by a user. The atomizer 100 can be used in different fields, such as medical treatment, beauty treatment, leisure inhalation, etc.

[0048] In a specific embodiment, the atomizer 100 can be used in an electronic aerosolization device to atomize an aerosol-generating matrix and generate an aerosol for a user to inhale. The following embodiments all take this recreational inhalation as an example. The power supply assembly 200 is used to couple the atomizer 100 of the active liquid supply type electronic atomization device 300 to control the operation of the atomizer 100.

[0049] See also Figures 2 to 6 , Figure 10 to Figure 11 , Figure 2 is a schematic diagram of the structure of the atomizer provided in this application, Figure 3 is a schematic diagram of the structure of the nozzle provided in this application, Figure 4 is a schematic diagram of a first heating structure of a nozzle provided in the first embodiment of the present application, Figure 5 is a schematic diagram of a second heating structure of the nozzle provided in the first embodiment of the present application, Figure 6 Schematic diagram of the third heating structure of the nozzle provided in the first embodiment of the present application. Fig.10 The surface temperature rise curve of the nozzle provided in this application is Fig.11 The temperature rise curves of the aerosol generating substrate after flowing through the heating body of the nozzle at different temperatures.

[0050] The atomizer 100 provided in the present application includes a liquid storage tank 20, a nozzle 10, a micro pump 30 and a housing 40, wherein the liquid storage tank 20 is used to store an aerosol generating matrix; the nozzle 10 is used to atomize the aerosol generating matrix; the nozzle 10 has an air inlet channel 11, a liquid inlet channel 12 and an atomizing chamber 13; the liquid inlet channel 12 and the air inlet channel 11 are connected to the atomizing chamber 13. One end of the liquid inlet channel 12 is connected to the liquid storage tank 20, and the aerosol generating matrix in the liquid storage tank 20 can be introduced into the atomizing chamber 13 for atomization. The housing 40 has an installation space, and the nozzle 10 is accommodated in the installation space. The micro pump 30 is connected to the air inlet channel 11, and is used to supply air to the nozzle 10, so as to heat and atomize the aerosol generating matrix in the nozzle 10. Specifically, the micro pump 30 is in fluid communication with the air inlet channel 11 of the nozzle 10, and is used to provide a high-speed airflow to the nozzle 10. The liquid inlet channel 12 is fluidically connected to the liquid storage tank 20. The aerosol generating matrix in the liquid storage tank 20 is transmitted to the position of the atomization chamber 13 due to the negative pressure, and is atomized once to form an aerosol after colliding with the high-speed airflow provided by the micro pump 30. When the aerosol generating matrix flows through the liquid inlet channel 12, the heating body 102 corresponding to the liquid inlet channel 12 heats the aerosol generating matrix, thereby reducing the viscosity of the aerosol generating matrix.

[0051] In one embodiment, if Figure 2 As shown, the atomizer 100 may include a connecting channel 14, which is arranged between the nozzle 10 and the micropump 30, and the amount of the aerosol-generating substrate entering the nozzle 10 is controlled by the micropump 30. A liquid supply section 17 is arranged between the liquid storage tank 20 and the nozzle 10, and the liquid supply section 17 communicates with the liquid storage tank 20 and the nozzle 10 to transfer the aerosol-generating substrate in the liquid storage tank 20 to the position of the nozzle 10. In this embodiment, the liquid supply rate of the nozzle 10 can be controlled by controlling the rotation speed of the micropump 30; and the liquid supply amount of the nozzle 10 can be controlled by controlling the rotation speed and rotation time of the micropump 30. That is, the atomization parameters in the atomization process of the atomizer 100 can be controlled by controlling the rotation speed and rotation time of the micropump 30.

[0052] The liquid storage tank 20 can be accommodated in the installation space of the nozzle 10, or can be arranged outside the installation space, and is arranged according to actual conditions. The specific structures of the liquid inlet channel 12, the air inlet channel 11 and the atomization chamber 13 will be described in the following content.

[0053] like Figure 3 As shown, the nozzle 10 provided in the present application includes a housing 105 and a fixing member 106, an ejector pin 107, an ejector pin holder 108, an ejector portion 101 and a heater 102 arranged in the housing 105. The fixing member 106 has a cavity 1061, and the ejector portion 101 and the heater 102 are arranged in the cavity 1061. The housing 105 has a receiving cavity 109 that matches the size of the fixing member 106 and the ejector pin holder 108, so that the fixing member 106 and the ejector pin holder 108 can be matched and connected with the housing 105. The ejector pin 107 can be set to two, and the two ejector pins 107 pass through the ejector pin holder 108 and abut against the two electrodes of the heater 102, so as to be electrically connected to the two electrodes of the heater 102.

[0054] The side wall of the housing 105 also has a first connecting tube 1052 and a second connecting tube 1053, which can be an integrally formed structure with the housing; or the first connecting tube 1052 and the second connecting tube 1053 can be a separate structure, fixedly connected to the housing 105. The first connecting tube 1052 is connected to the liquid inlet channel 12 and the liquid supply section 17 to introduce the aerosol generating substrate in the liquid storage tank 20 into the liquid inlet channel 12, and the second connecting tube 1053 is connected to the air inlet channel 11 and the connecting channel 14 to introduce the gas provided by the micro pump 30 into the air inlet channel 11. It can be understood that the functions and corresponding connection methods of the air inlet channel 11 and the liquid inlet channel 12 can also be interchanged, and this application does not limit this.

[0055] The spray part 101 has an atomizing chamber 13 and an air inlet channel 11 and a liquid inlet channel 12 respectively connected to the atomizing chamber 13; the gas entering the atomizing chamber 13 from the air inlet channel 11 collides with the aerosol generating substrate entering the atomizing chamber 13 from the liquid inlet channel 12, and then atomization occurs to form an aerosol; the atomizing chamber 13 has a mist outlet 131, so that the aerosol flows out from the mist outlet 131. The heating body 102 is integrated on the spray part 101 and is at least arranged corresponding to the liquid inlet channel 12, and is used to heat the aerosol generating substrate of the liquid inlet channel 12, thereby reducing the viscosity of the aerosol generating substrate, ensuring the flow rate of the aerosol generating substrate in the liquid inlet channel 12, preventing the channel from being blocked, and improving the atomization effect. The number of the liquid inlet channel 12 can be one or more, and the present application is described by taking one liquid inlet channel 12 as an example.

[0056] In this embodiment, the heating body 102 is preferably disposed on the inner surface of the side wall of the liquid inlet channel 12 and / or the outer surface of the side wall of the liquid inlet channel 12; or the heating body 102 is a part of the side wall of the liquid inlet channel 12. That is, the arrangement position of the heating body 102 corresponds to the position of the liquid inlet channel 12, so as to improve the heating effect on the aerosol generating substrate in the liquid inlet channel 12.

[0057] It is understandable that Figure 5 As shown, the heating body 102 can also be arranged corresponding to the air inlet channel 11; and / or the heating body 102 can also be arranged corresponding to the atomizing chamber 13. That is, in addition to being arranged corresponding to the liquid inlet channel 12, the heating body 102 can also be further arranged corresponding to the positions of the air inlet channel 11 and the atomizing chamber 13, so as to heat the air in the air inlet channel 11 and heat the aerosol in the atomizing chamber 13.

[0058] See also Figures 7 and 8 , Figure 7 is a schematic diagram of the first structure of the flow channel provided in the first embodiment of the present application, Figure 8 This is a second structural schematic diagram of the flow channel provided in the first embodiment of the present application.

[0059] First embodiment:

[0060] In this embodiment, if Figures 4 to 8 As shown, the spraying part 101 includes a main body substrate 104 and a cover substrate 103, and the main body substrate 104 has a first surface 1041 and a second surface 1042 arranged opposite to each other. The second surface 1042 has an atomizing groove 132 and an air inlet groove 111 and a liquid inlet groove 121 respectively connected to the atomizing groove 132. The cover substrate 103 is covered on the second surface 1042, and cooperates with the atomizing groove 132, the air inlet groove 111 and the liquid inlet groove 121 to form an atomizing chamber 13, an air inlet channel 11 and a liquid inlet channel 12 respectively.

[0061] Specifically, the heating body 102 can be arranged only corresponding to the liquid inlet channel 12 to heat the aerosol-generating matrix in the liquid inlet channel 12. For example, it can be arranged on the portion of the first surface 1041 corresponding to the liquid inlet groove 121, and the heating body 102 can be arranged on the bottom surface of the liquid inlet groove 121; and / or the heating body 102 can be arranged on the surface of the cover substrate 103 facing the liquid inlet groove 121, or the heating body 102 can be arranged on the surface of the cover substrate 103 away from the liquid inlet groove 121. The heating body 102 can also be arranged on the entire first surface 1041 to heat the liquid inlet channel 12, the air inlet channel 11 and the atomizing chamber 13, which can increase the working temperature of the entire nozzle 10, so that the liquid inlet channel 12, the air inlet channel 11 and the atomizing chamber 13 are all well heated, and the aerosol generated by atomization can be kept warm before the mist outlet 131, which can ensure the restoration degree of the aerosol-generating matrix and other special flavors / tastes. At the same time, since the entire nozzle 10 is heated, the atomized aerosol is not easy to condense into large droplets at the mist outlet 131 and flow back into the nozzle 10, or clog the nozzle 10 after long-term use, thereby improving the service life and consistency of the nozzle 10.

[0062] In this embodiment, the body substrate 104 has a first side 1043 and a second side 1044 opposite to each other, and a third side 1045 connecting the first side 1043 and the second side 1044; the first side 1043, the second side 1044 and the third side 1045 can all be understood as the connecting sides between the side surface of the body substrate 104 and the second surface 1042. The atomization groove 132 is arranged near the first side 1043 and has a mist outlet 131 located at the first side 1043, the air inlet groove 111 extends from the second side 1044 to the atomization groove 132, and the liquid inlet groove 121 extends from the third side 1045 to the atomization groove 132. At one end near the atomization groove 132, the air inlet groove 111 and the liquid inlet groove 121 are connected, and both are connected to the atomization groove 132.

[0063] In the present embodiment, a constriction structure is formed at one end where the air inlet groove 111 is connected to the atomizing groove 132. The constriction structure can be understood as follows: at the positions where the air inlet groove 111 and the liquid inlet groove 121 are respectively connected to the atomizing groove 132, their widths are smaller than the widths at positions away from the atomizing groove 132. In the present embodiment, the width of the air inlet groove 111 is significantly greater at the end away from the atomizing groove 132 than at the end close to the atomizing groove 132. The liquid inlet channel 12 and the air inlet channel 11 gradually narrow and meet at the narrowest point, forming a high-speed fluid at the junction, and the gas and liquid collide with each other to atomize the aerosol generating matrix to form an aerosol, and then the aerosol is ejected from the mist outlet 131.

[0064] The liquid inlet groove 121 includes an inlet section 1211, a middle section 1212 and an outlet section 1213; the inlet section 1211 and the outlet section 1213 are both narrowed relative to the middle section 1212, so that the aerosol generating substrate entering from the inlet section 1211 can be stored in the middle section 1212 with a larger space, thereby ensuring the supply of the aerosol generating substrate. The narrowed outlet section 1213 can prevent the problem of leakage caused by the excessive mass of the aerosol generating substrate entering the atomization chamber 13 at one time and not being able to be atomized in time, and at the same time prevent the problem of poor atomization effect caused by the excessive mass of the aerosol generating substrate. Furthermore, the two side walls of the middle section 1212 can be set so that one of them is straight and the other is curved, and the curved side wall can reduce the resistance of the liquid aerosol generating substrate when it flows.

[0065] In the present embodiment, the length of the liquid inlet channel 12 is not limited, and the size of the liquid inlet channel 12 affects the liquid inlet resistance, liquid inlet amount and atomization amount. Under low temperature environment (such as severe cold areas), the viscosity of the aerosol generation matrix is ​​reduced. Under the same nozzle 10 and working conditions, the liquid inlet amount and atomization amount are significantly affected, and even reach a situation where atomization cannot be achieved. In order to achieve atomization, it is necessary to increase the pressure flow rate of the air pump, which is bound to increase energy consumption and increase the volume of the air pump, and at the same time, the consistency of atomization cannot be guaranteed. The heating body 102 of the present application is integrated on the nozzle 10, distributed throughout the nozzle 10 and the liquid inlet channel 12, and the small size, thin thickness and good thermal conductivity of the resistance wire of the heating body 102 and the silicon base can achieve a rapid increase in the temperature field in the liquid inlet channel 12, so as to achieve the effect of reducing the viscosity of the aerosol generation matrix, and ensure the suction consistency and low temperature usability.

[0066] In this embodiment, the height of the liquid inlet channel 12, that is, the longitudinal depth of the liquid inlet groove 121 is 50-500 μm, preferably 100-200 μm. Different longitudinal depths of the liquid inlet groove 121 affect the pressure and flow rate required for liquid flow, heating power, etc. The deeper the liquid inlet groove 121, the greater the amount of liquid inlet of the aerosol generating matrix per unit time, and the required heating power also needs to be increased accordingly.

[0067] Further, the side wall of the liquid inlet groove 121 may have a first opening 124 and a second opening 125, and the first opening 124 and the second opening 125 may be opened in the middle section 1212 of the liquid inlet groove 121. The heating body 102 is arranged on the bottom surface of the liquid inlet groove 121. The heating body 102 includes a first electrode 102a and a second electrode 102b; the first electrode 102a extends to the first opening 124, and the second electrode 102b extends to the second opening 125. The first electrode 102a and the second electrode 102b can be electrically connected to an external power supply unit, for example, electrically connected to the power supply assembly 200. Two lead-out holes 1032 can be opened on the main substrate 104 to lead out the first electrode 102a and the second electrode 102b through a wire (not shown) or a pin 107.

[0068] Specifically, the first opening 124 and the second opening 125 are both located on the side wall of the liquid inlet groove 121 close to the first side 1043, or are both located on the side wall of the liquid inlet groove 121 close to the second side 1044, or one opening can be opened on the first side 1043 and one opening can be opened on the second side 1044. Alternatively, when the end of the air inlet groove 111 away from the atomization groove 132 is opened on the fourth side 1046 arranged opposite to the second side 1044, the first opening 124 and / or the second opening 125 can also be arranged on the third side 1045, as long as the arrangement positions of the first opening 124 and the second opening 125 are staggered with the positions of the mist outlet 131 and the air inlet groove 111 and do not interfere with each other, the present application does not impose any restrictions on this.

[0069] See also Fig. 9 , Fig. 9 It is a schematic diagram of the structure of the flow channel provided in the second embodiment of the present application.

[0070] Second embodiment:

[0071] In this embodiment, if Fig. 9 As shown, the injection unit 101 includes a body substrate 104 and a cover substrate 103, and the body substrate 104 has a first surface 1041 and a second surface 1042 arranged opposite to each other. The second surface 1042 has an atomizing groove 132 and a fluid groove 122 surrounding the atomizing groove 132, and a plurality of liquid inlet grooves 121 connecting the fluid groove 122 and the atomizing groove 132. The bottom wall of the atomizing groove 132 has a first through hole 133 as an air inlet channel 11. The outer side wall of the fluid groove 122 has a liquid inlet 123, which is connected to the fluid groove 122. Through the liquid inlet 123, the aerosol generating matrix in the liquid storage tank 20 can enter the fluid groove 122, and enter the atomizing groove 132 through the plurality of liquid inlet grooves 121.

[0072] The cover substrate 103 is covered on the second surface 1042, and the cover substrate 103 cooperates with the atomizing groove 132 to form the atomizing chamber 13. The cover substrate 103 has a second through hole 1031 as a mist outlet 131, and the mist outlet 131 is connected to the atomizing chamber 13. The cover substrate 103 cooperates with the liquid inlet groove 121 and the fluid groove 122 to form a liquid inlet channel 12. The aerosol generating matrix enters the atomizing chamber 13 through the liquid inlet channel 12, and collides with the high-speed airflow entering the air inlet channel 11 to be atomized once to form an aerosol, and the aerosol further flows out from the mist outlet 131.

[0073] In this embodiment, if Fig. 9As shown, when the heating body 102 is disposed on the bottom wall of the fluid groove 122, it can be arranged to match the shape of the bottom wall of the fluid groove 122, so that the aerosol generating substrate can be effectively heated without increasing the volume of the nozzle 10. Alternatively, the heating body 102 can also be disposed on the surface of the cover substrate 103 close to the body substrate 104, and the aerosol generating substrate in the liquid inlet channel 12 can also be heated.

[0074] In this embodiment, the functions of the air inlet groove 111 and the liquid inlet 123 can also be interchanged, that is, liquid is introduced through the first through hole 133 opened in the center of the main substrate 104, and air is introduced through the liquid inlet 123 opened on the outer wall of the fluid groove 122, and the functions of synchronous air and liquid introduction can also be achieved.

[0075] In one embodiment, the heating body 102 can be a heating film, preferably 0.1-1μm. The thickness of the heating film is 0.05μm-5μm; the width of the heating film is 10-1000μm, preferably 100-200μm, and the width can be equal or unequal. The spacing of the heating film includes but is not limited to 10-1000μm, preferably 100-200μm, and the spacing can be equal or unequal. The layout of the heating film includes but is not limited to serpentine, spiral, etc., and the connection method of the resistance wire of the heating film includes but is not limited to series, parallel, etc. The above-mentioned setting method and the setting value of the heating film can ensure the heating effect of the heating body 102 on the aerosol generating matrix, reduce the viscosity of the aerosol generating matrix, and prevent the liquid inlet channel 12 from being blocked.

[0076] The resistance wire material of the heating film can include any material that can be heated by electricity, including but not limited to pure metals such as gold, silver, platinum, nickel, iron, and alloys such as iron-nickel, nickel-chromium, stainless steel, iron-chromium-aluminum, and materials covered with carbon-based films such as graphene and carbon nanotubes or metal nanofilms such as silver nanowires.

[0077] The material of the main body substrate 104 is silicon, glass or metal, and the material of the cover substrate 103 is silicon, glass or metal. The liquid inlet channel 12, the air inlet channel 11 and the atomization chamber 13 can be an internal channel bonded by two substrates. The bonded substrate includes but is not limited to silicon-silicon bonding, silicon-glass bonding, glass-glass bonding, metal-metal bonding, etc. For example, by photolithography, etching, metal deposition, bonding and other processes on the main body substrate 104 of silicon, glass or metal, an integrated structure of the heating body 102 and the injection part 101 is formed. That is, the heating body 102 is directly integrated on the injection part 101 using micro-nano processing technology, and the process compatibility is good. The heating body 102 includes but is not limited to a MEMS heater manufactured based on surface micro-machining technology and MEMS (Micro-Electro-Mechanical Systems, micro-electromechanical systems) body micro-machining technology. The heating method includes but is not limited to resistance wire heating, thin film heating, resistor heating and other methods. Based on the above-mentioned MEMS process, high-density integration of chips with different functions on the same substrate can be achieved.

[0078] The MEMS heater used in the heating body 102 of the present application can be integrated on the millimeter-sized MEMS nozzle 10 due to its small size, so as to manufacture a micrometer-scale resistance wire and realize uniform heating on a plane. The heated volume / area is small, and the required temperature can be quickly reached (while the heater manufactured based on the traditional process is large in size, usually in the order of centimeters). At the same time, since the target to be heated is the nozzle 10 and its liquid inlet channel 12, rather than the entire liquid storage tank 20, the required heat is small, and less power can be used to achieve the heating effect, saving energy consumption, and will not affect the quality of the aerosol-generating matrix in the liquid storage tank 20 after multiple suctions, thus ensuring the consistency of suction.

[0079] See also Fig.12 , Fig.12 It is a module schematic diagram of the power supply component provided in this application.

[0080] In one embodiment, the nozzle 10 further includes a sensor 250, and the sensor 250 is used to obtain detection information of the aerosol generating substrate, and the detection information includes temperature information or viscosity information.

[0081] Specifically, the sensor 250 can be disposed on the outer surface of the injection portion 101 to detect the ambient temperature of the injection portion 101, so as to heat the aerosol generating substrate in the liquid inlet channel 12 to a preset temperature according to the ambient temperature. For example, a corresponding table or program between the ambient temperature and the heating temperature can be preset. When the ambient temperature reaches a certain degree, the aerosol generating substrate is heated to a certain degree, so as to ensure the temperature of the aerosol generating substrate and prevent the viscosity of the aerosol generating substrate from being too high, affecting the flow rate or blocking the liquid inlet channel 12. Fig.10 and Fig.11The sensor 250 is arranged on the outer surface of the injection part 101, which has the advantages of convenient arrangement and monitoring, and the sensor 250 will not be affected by the liquid aerosol generating matrix, and has a longer service life.

[0082] Alternatively, the sensor 250 may also be disposed in the liquid inlet channel 12, for example, on the inner wall of the liquid inlet channel 12 or on the main body substrate 104, to detect the temperature information or viscosity information of the aerosol generating substrate flowing through the liquid inlet channel 12, and heat the aerosol generating substrate according to the detected information. The sensor 250 disposed in the liquid inlet channel 12 has a higher detection accuracy, and can monitor the temperature information and viscosity information of the aerosol generating substrate in real time with higher accuracy, so that the heating body 102 can heat the aerosol generating substrate at any time according to the monitored information, and the heating is more targeted.

[0083] In another embodiment, the sensor 250 may also be disposed on the power supply assembly 200 .

[0084] Specifically, the power supply assembly 200 can be provided with a processor 210 electrically connected to the sensor 250, and the processor 210 receives the detection information of the sensor 250, which includes the temperature information and the viscosity information of the aerosol generating substrate, so as to control the nozzle 10 of the atomizer 100 to work according to the temperature information or the viscosity information, including controlling the heating body 102 to heat or not heat the aerosol generating substrate flowing through the liquid inlet channel 12. For example, when a low-viscosity aerosol generating substrate is used for atomization, it is not necessary to use a heating and viscosity reduction scheme, for example, when the liquid viscosity is less than 5 Pa.s, it is not necessary to heat and reduce the viscosity of the aerosol generating substrate. Or when the temperature of the nozzle use environment is high, it is not necessary to heat and reduce the viscosity of the aerosol generating substrate.

[0085] The power supply assembly 200 may further include: a memory 220 , a battery 230 , a controller 240 , etc. The memory 220 stores parameters for controlling the operation of the atomizer 100 .

[0086] Specifically, the processor 210 is used to control the operation of the power supply assembly 200, and the processor 210 can also be called a CPU (Central Processing Unit). The processor 210 is electrically connected to the controller 240 so that the controller 240 can control different components in the power supply assembly 200. Specifically, the controller 240 can specifically include a nozzle control unit 241, a voltage control unit 242, and a heating control unit 243, wherein the voltage control unit 242 can be electrically connected to the processor 210 and the battery 230, and the battery 230 can be controlled by the voltage control unit 242 to start or stop supplying power, and to control the output voltage of the battery 230. The nozzle control unit 241 can be electrically connected to the voltage control unit 242 and the nozzle 10, so that the nozzle control unit 241, under the drive of the voltage control unit 242, further controls the nozzle 10 to start or stop running, and controls the micro pump 30 in the nozzle 10 to run at different speeds, such as the first speed, the second speed, or the third speed, etc.; or controls the opening degree of the nozzle 10 to control the liquid supply rate and / or liquid supply amount of the nozzle 10. The heating control unit 243 can be electrically connected to the processor 210, and the heating control unit 243 controls the heating body 102 to heat and operate at different powers. For example, the heating control unit 243 controls the heating body 102 to heat and atomize the aerosol generating matrix for the user to inhale. Optionally, the nozzle control unit 241, the voltage control unit 242 and the heating control unit 243 can be a microcontroller, etc., and this application does not limit this.

[0087] In one embodiment, the processor 210 may be an integrated circuit chip with signal processing capabilities. The processor 210 may also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The general-purpose processor may be a microprocessor, or the processor 210 may also be any conventional processor, etc.

[0088] The memory 220 is electrically connected to the processor 210, and the memory 220 can store the working parameters for controlling the atomizer 100. The memory 220 can be a RAM, a ROM, or other types of storage devices. Specifically, the memory 220 can include one or more computer-readable storage media (not shown), and the computer-readable storage media can be non-transient. The memory 220 can also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices.

[0089] The sensor 250 is electrically connected to the processor 210. The sensor 250 is used to detect the temperature or viscosity of the aerosol generating substrate. It can detect the ambient temperature to control the heating body 102 to heat or not heat the aerosol generating substrate. When the temperature or viscosity of the aerosol generating substrate or the temperature of the aerosol generated by a single atomization does not reach the preset temperature or viscosity, the heating body 102 is controlled to heat. The sensor 250 can be a microphone.

[0090] The battery 230 is used to provide electrical energy for the operation of the atomizer 100, so that the atomizer 100 can atomize the aerosol-generating matrix to form an aerosol. The controller 240 is used to control the operation of the atomizer 100. The power supply assembly 200 may also include other components such as a battery holder (not shown), a control circuit board (not shown), etc.

[0091] The atomizer 100 and the power supply assembly 200 of the present application may be detachably connected or may be an integral structure that cannot be detached. For example, the atomizer 100 and the power supply assembly 200 share a housing 40, and the present application does not impose any limitation on this.

[0092] The nozzle disclosed in the present application includes a spray part and a heating body, wherein the spray part has an atomizing chamber and an air inlet channel and a liquid inlet channel respectively connected to the atomizing chamber; the gas entering the atomizing chamber from the air inlet channel collides with the aerosol generating matrix entering the atomizing chamber from the liquid inlet channel and is atomized to form an aerosol; the mist outlet of the atomizing chamber allows the aerosol to flow out from the mist outlet; the heating body is integrated on the spray part and is at least arranged corresponding to the liquid inlet channel, and is used to heat the aerosol generating matrix of the liquid inlet channel, thereby reducing the viscosity of the aerosol generating matrix, ensuring the flow rate of the aerosol generating matrix in the liquid inlet channel, preventing the channel from being blocked, and improving the atomization effect. At the same time, the aerosol is prevented from condensing and refluxing at the nozzle outlet, avoiding the problem of large droplets and effusion, and improving the service life of the nozzle.

[0093] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A nozzle, characterized in that: include: The spraying part comprises an atomizing chamber and an air inlet channel and a liquid inlet channel respectively connected to the atomizing chamber; The gas entering the atomizing chamber from the air inlet channel collides with the aerosol-generating matrix entering the atomizing chamber from the liquid inlet channel and then is atomized to form an aerosol; the atomizing chamber has a mist outlet, so that the aerosol flows out from the mist outlet; A heating body is integrated on the ejection portion and is at least arranged corresponding to the liquid inlet channel, and the heating body is used to heat the aerosol generating matrix in the liquid inlet channel to reduce the viscosity of the aerosol generating matrix.

2. The nozzle according to claim 1, characterized in that The heating body is arranged on the inner surface of the side wall of the liquid inlet channel and / or the outer surface of the side wall of the liquid inlet channel; or The heating body is a part of the side wall of the liquid inlet channel.

3. The nozzle according to claim 2, characterized in that The heating body is also arranged corresponding to the air inlet passage; and / or The heating body is also arranged corresponding to the atomization chamber.

4. The nozzle according to claim 2, characterized in that The injection unit comprises: A body substrate, the body substrate comprising a first surface and a second surface arranged opposite to each other, the second surface having an atomizing groove and an air inlet groove and a liquid inlet groove respectively connected to the atomizing groove; A substrate is provided to cover the second surface and cooperate with the atomizing groove, the air inlet groove and the liquid inlet groove to form the atomizing chamber, the air inlet channel and the liquid inlet channel respectively; Wherein, the heating body is arranged on a portion of the first surface corresponding to the liquid inlet groove, or the heating body is arranged on the entire first surface; and / or The heating body is arranged on the bottom surface of the liquid inlet tank; and / or The heating body is arranged on a surface of the cover substrate facing the liquid inlet groove, or the heating body is arranged on a surface of the cover substrate facing away from the liquid inlet groove.

5. The nozzle according to claim 4, characterized in that The main body substrate has a first side and a second side opposite to each other, and a third side connecting the first side and the second side; the atomization groove is arranged close to the first side and has the mist outlet located on the first side, the air inlet groove extends from the second side to the atomization groove, and the liquid inlet groove extends from the third side to the atomization groove.

6. The nozzle according to claim 5, characterized in that One end of the air inlet groove connected to the atomizing groove forms a constricted structure; Wherein, the liquid inlet groove comprises an inlet section, a middle section and an outlet section; the inlet section and the outlet section are both narrowed relative to the middle section; one of the two side walls of the middle section is straight and the other is curved.

7. The nozzle according to claim 5 or 6, characterized in that The side wall of the liquid inlet tank has a first opening and a second opening; the heating body is arranged on the bottom surface of the liquid inlet tank; the heating body includes a first electrode and a second electrode; the first electrode extends to the first opening, and the second electrode extends to the second opening; Wherein, the first opening and the second opening are both located on the side wall of the liquid inlet groove close to the first side, or are both located on the side wall of the liquid inlet groove close to the second side.

8. The nozzle according to claim 1, characterized in that The injection unit comprises: The main body substrate has a first surface and a second surface arranged opposite to each other; the second surface has an atomization groove and a fluid groove surrounding the atomization groove, and a plurality of liquid inlet grooves connecting the fluid groove and the atomization groove; the bottom wall of the atomization groove has a first through hole as an air inlet channel; the outer side wall of the fluid groove has a liquid inlet; A cover substrate is provided on the second surface; the cover substrate cooperates with the atomization groove to form the atomization chamber; the cover substrate cooperates with the liquid inlet groove and the fluid groove to form the liquid inlet channel; the cover substrate has a second through hole as the mist outlet; Wherein, the heating body is arranged on the bottom wall of the fluid tank; or the heating body is arranged on the surface of the cover substrate close to the main body substrate.

9. The nozzle according to claim 4 or 8, characterized in that The material of the main substrate is silicon, glass or metal, and the material of the cover substrate is silicon, glass or metal; The heating body is a heating film; the thickness of the heating film is 0.05 μm-5 μm, and the width of the heating film is 10-1000 μm.

10. The nozzle according to claim 1, characterized in that The nozzle also includes: A sensor, used to obtain detection information of the aerosol generating substrate; the detection information includes temperature information or viscosity information; Among them, the sensor is arranged on the outer surface of the injection part, and is used to detect the ambient temperature of the injection part, so as to heat the aerosol generating matrix in the liquid inlet channel to a preset temperature according to the ambient temperature; or the sensor is arranged in the liquid inlet channel, and is used to detect the temperature information or viscosity information of the aerosol generating matrix flowing through the liquid inlet channel, and heat the aerosol generating matrix according to the detection information.

11. An atomizer, characterized in that: include: A liquid storage tank, used for storing aerosol generating matrix; A nozzle, wherein the nozzle is the nozzle according to any one of claims 1 to 10; The liquid inlet channel is connected to the liquid storage tank; A micro pump is connected to the air inlet channel and is used to supply air to the nozzle to atomize the aerosol generating matrix in the nozzle.

12. An electronic atomization device, characterized in that: include: Nebulizer; The atomizer is the atomizer according to claim 11; A power supply assembly is coupled to the atomizer and is used to provide power to the atomizer.

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