Spraying unit and spraying device

Abstract

FIELD: tobacco industry.SUBSTANCE: group of inventions which relate to devices imitating smoking. The spray unit (60) comprises a support (10) having a hollow structure and a spray core (20) located in the support (10). The spray core (20) comprises a liquid guide element (21) and a heating element (22) attached to the liquid guide element (21) or built into it. The support (10) is provided with at least one inlet (11) for liquid and at least one outlet (12) for air. The spray unit (60) further comprises a pressure stabilising tube (30) which is fitted onto the outer wall of the support (10) in such a way as to cover the inlet (11) for liquid and the outlet (12) for air. Between the inner surface of the tube wall (30) for stabilizing the pressure and the outer surface of the support wall (10), a gap (31) is formed for stabilizing the pressure. The tube (30) for pressure stabilization is provided with at least one ventilation hole (32) for pressure stabilization and an inlet (33) for liquid for pressure stabilization. The ventilation hole (32) for pressure stabilization communicates with the outlet hole (12) for air. The inlet (33) for the pressure stabilizing liquid and the inlet opening (11) for the liquid are arranged in a staggered manner and communicate with each other. A spray device is claimed.EFFECT: stabilization of pressure at the liquid inlet and air outlet, thereby ensuring a stable supply of spray liquid and ventilation.13 cl, 16 dwg

Description

AREA OF TECHNOLOGY

[0001] The present invention relates to the field of electron atomization, and in particular to an atomization unit and an atomization device.BACKGROUND

[0002] An electronic atomizer is a device that uses electricity to heat liquid to produce a vaporizable liquid. It is currently widely used in the electronic cigarette industry. Electronic cigarettes have gained popularity in recent years as a new type of tobacco product due to their cigarette-like sensation. The atomizer core is particularly important, as it is the central component of the vaporizer in an electronic atomizer. The main parts of the atomizer core include a liquid guide element and a heating element. The liquid guide element delivers liquid to the heating element, where the high temperature of the heating element vaporizes the liquid into vapor.Since the atomizer liquid is stored in the liquid compartment of the vaporizer, the internal space and pressure in the liquid compartment will change as liquid is consumed during use. Liquid pressure at the liquid inlet surface of the atomizer core varies depending on the liquid level, resulting in significant differences in liquid pressure along the entire path. Consequently, maintaining a balance between the liquid compartment and the atomizer core becomes difficult. This balance relates to the ability to deliver the required e-liquid without leakage.Because the liquid level pressure changes during use, the liquid level pressure is initially high, requiring a smaller liquid inlet (to prevent oil leakage). However, after use, the liquid level and pressure drop, requiring a larger liquid inlet to prevent insufficient oil supply and core burning. However, the size of the liquid inlet does not change, so changes in liquid level and pressure can cause problems with oil supply to the atomizing core. This leads to a lack of atomizing liquid on the atomizing surface and core burning due to the continuous increase in heating element temperature.

[0003] DISCLOSURE OF THE ESSENCE OF THE INVENTION

[0004] The technical problem to which the present invention is directed is to provide a spray unit and a spray device to overcome the disadvantages of the prior art.

[0005] The technical solution proposed in the present invention to solve the said technical problem includes: providing a spray unit comprising a support having a hollow structure, a spray core located in said support, wherein the spray core comprises a liquid guide element and a heating element attached to the liquid guide element or built into it, and the support is provided with at least one liquid inlet and at least one air outlet, the spray unit further comprises a pressure stabilizing tube which is put on the outer wall of the support so as to cover the liquid inlet and the air outlet;

[0006] a gap for pressure stabilization is formed between the inner surface of the wall of the tube for pressure stabilization and the outer surface of the wall of the support, wherein the tube for pressure stabilization is provided with at least one vent hole for pressure stabilization and at least one inlet for liquid for pressure stabilization, wherein the vent hole for pressure stabilization communicates with the air outlet, and the inlet for liquid for pressure stabilization and the inlet hole for liquid are staggered and communicate with each other.

[0007] Also, it is preferable that the pressure stabilizing liquid inlet is located at the lower part of the side wall of the pressure stabilizing tube, and the location of the liquid inlet is higher than the location of the pressure stabilizing liquid inlet.

[0008] In addition, it is preferable that a pressure stabilizing ventilation hole is provided at the upper part of the side wall of the pressure stabilizing tube.

[0009] In addition, it is preferable that the liquid inlet is arranged in the circumferential direction along the outer wall surface of the support, and accordingly, the liquid inlet for stabilizing the pressure is arranged in the circumferential direction along the outer wall surface of the pressure stabilizing tube, and the air outlet is arranged in the circumferential direction along the outer wall surface of the support, and accordingly, the outlet for stabilizing the pressure is arranged in the circumferential direction along the outer wall surface of the pressure stabilizing tube.

[0010] In addition, it is preferable that the pressure stabilizing gap between the inner wall surface of the pressure stabilizing tube and the outer wall surface of the support is less than 1 mm.

[0011] In addition, it is preferable that the diameter of the liquid inlet is larger than the diameter of the air outlet.

[0012] In addition, it is preferable that the diameter of the air outlet is less than or equal to 0.5 mm, and the diameter of the liquid inlet is in the range of 1 mm to 4 mm.

[0013] In addition, it is preferable that the support has a cylindrical structure, the pressure stabilizing tube has a tubular structure, the two ends of which are smaller than the middle portion thereof, and the two ends of the pressure stabilizing tube are fitted onto the support to ensure sealing, and a pressure stabilizing gap is formed between the inner wall surface of the middle portion of the pressure stabilizing tube and the outer wall surface of the support.

[0014] Furthermore, preferably, the pressure stabilizing tube has a cylindrical structure, the support has a tubular structure, the two ends of which are larger than the middle portion thereof, and in the middle portion of the support, an installation region corresponding to the pressure stabilizing tube is formed with an inward bend, a liquid inlet and an air outlet are provided on the installation region, installation steps are provided at both ends of the installation region, the two ends of the pressure stabilizing tube are sealedly connected to the installation steps, and a pressure stabilizing gap is formed between the inner wall surface of the pressure stabilizing tube and the inner wall surface of the installation region.

[0015] Furthermore, preferably, the liquid inlet is provided so as to correspond to a liquid guide element, the surface of which facing the support forms a liquid inlet surface, while the surface of the liquid guide element facing the heating element forms a spray surface, and a hollow air flow channel is formed inside the liquid guide element, and the air outlet is located higher than the liquid guide element and communicates with said air flow channel.

[0016] In addition, preferably, the heating element comprises a heating circuit and electrode terminals extending from both ends of the heating circuit, and the spray unit further comprises a fixing plug located at the bottom of the support for fixing the electrode terminals, wherein the fixing plug is provided with an air intake.

[0017] The present invention also provides a spray device comprising a housing, the above-mentioned spray unit, which is located inside the housing, an upper sealing element located above the spray unit, a sealing seat located under the spray unit, and a base located at the bottom of the sealing seat and connected to the housing, a sealed compartment for storing liquid, which is formed between the spray unit, the housing and the sealing seat, wherein the liquid inlet for stabilizing the pressure of the spray unit communicates with the liquid storage compartment, and the vent for stabilizing the pressure communicates with the liquid storage compartment.

[0018] Furthermore, it is preferable that the housing extends inward to form an air flow tube, the upper sealing member is fitted onto the lower end of the air flow tube and provided with a groove, and the upper end of the atomizing unit support is compressed by the groove to ensure sealing, so that the air flow tube communicates with the atomizing core.

[0019] The technical solution according to the present invention has at least the following advantageous effects: The atomizing unit provided by the present invention forms a relatively small air inlet on the support of the atomizing core and provides a pressure stabilizing tube on the outside of the support of the atomizing core. The pressure stabilizing tube is mounted on the outside of the support, and a pressure stabilizing gap is formed between the pressure stabilizing tube and the support. This gap is relatively small, and the surface tension of the atomizing liquid inside it generates a capillary phenomenon, which effectively generates a capillary force. This capillary force is affected only by the pressure stabilizing gap. That is, when the gap between the pressure stabilizing tube and the support remains constant, the capillary force remains unchanged.Consequently, the liquid level pressure at the liquid inlet of the spray core will no longer vary depending on the liquid level in the liquid storage compartment. Furthermore, the capillary force created by the gap between the pressure stabilizing tube 30 and the support 10 prevents the spray liquid from leaking through the smaller air outlet 12. When the spray liquid located in the liquid storage compartment is consumed, causing a change in air pressure, the air outlet serves as a passage for air entering the liquid storage compartment. Gas from inside the spray core can enter the pressure stabilizing gap through the air outlet. This means that the air pressure inside the liquid storage compartment must be lower than the outside air pressure by a certain amount to allow air to break through the oil film in the air outlet.Therefore, placing the air outlet inside the pressure stabilization tube also helps stabilize the gas pressure value entering the liquid storage compartment, thereby ensuring stable liquid supply and air exchange performance.BRIEF DESCRIPTION OF DRAWINGS.

[0020] The above and other objects, features and advantages of the present invention will become more apparent from the detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, in which, in the exemplary embodiments of the present invention, like reference numerals generally designate like components.

[0021] Fig. 1 is a schematic perspective view of a first embodiment of a spray unit according to the present invention.

[0022] Fig. 2 shows a schematic view with a partial spatial explosion of the parts of the assembly of Fig. 1.

[0023] Fig. 3 shows a schematic exploded view of the assembly shown in Fig. 1.

[0024] Fig. 4-6 show schematic sectional views of the assembly of Fig. 1 from different sides.

[0025] Fig. 7 is a perspective view of a second embodiment of a spray unit according to the present invention.

[0026] Fig. 8 shows a schematic view with a partial spatial explosion of the parts of the assembly of Fig. 7.

[0027] Fig. 9 shows a schematic exploded view of the assembly shown in Fig. 7.

[0028] Fig. 10 shows a side view of the assembly of Fig. 7.

[0029] Fig. 11-12 show schematic sectional views of the assembly of Fig. 7 from different sides.

[0030] Fig. 13 is a schematic perspective view of an embodiment of a spray device according to the present invention.

[0031] Fig. 14 is a schematic exploded view of the device shown in Fig. 13.

[0032] Fig. 15-16 show schematic sectional views of the device of Fig. 13 from different sides.

[0033] IMPLEMENTATION OF THE INVENTION

[0034] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although embodiments of the present invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. On the contrary, such embodiments are provided to make the invention more detailed and complete, as well as to fully convey the scope of the invention to those skilled in the art.

[0035] It should be understood that although terms such as "first," "second," "third," etc., may be used herein to describe various elements, these elements should not be limited to these terms. These terms are used only to distinguish one typical element from another. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and, similarly, a second element may be referred to as a first element. Thus, features formulated as "first," "second," etc., may explicitly or implicitly include one or more of such features. In the description of the present invention, the term "plurality" means two or more, unless expressly stated otherwise.

[0036] It should be understood that in the description of the present invention, terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., which indicate orientations or positional relationships, are based on the orientations or positional relationships shown in the drawings. They are used only for the convenience of describing the invention and to simplify the description and do not indicate or imply that the mentioned device or element must have a specific orientation or must be designed and operate in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0037] Unless otherwise expressly stated, terms such as "install," "connect," "link," "fix," etc. should be interpreted broadly. For example, a connection may be a fixed connection, a detachable connection, or a permanent connection; it may be a mechanical connection, an electrical connection, or a direct connection; it may be a connection through an intermediate medium, or it may be a connection with interaction between two elements. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to the specific context.

[0038] Fig. 1-12 shows a spray unit according to some preferred embodiments of the present invention. The spray unit is located in a liquid storage compartment of an electronic spray device. The spray unit includes a support 10 having a hollow structure and a spray core 20 located inside the support 10. The spray core 20 includes a liquid guide element 21 and a heating element 22 attached to the liquid guide element 21 or built into it. The liquid guide element 21 may be a cotton-based liquid guide element or a porous ceramic liquid guide element. The support 10 is configured to provide a supporting force and an installation space and mainly serves to install and fix the liquid guide element 21 and the heating element 22.Therefore, a certain load-bearing capacity is required to prevent deformation of the liquid guide element 21 and the heating element 22 due to external forces, which helps to avoid poor contact between them and, consequently, to avoid an adverse effect on the spraying characteristics. The support 10 is provided with at least one inlet 11 for liquid and at least one outlet 12 for air. The inlet 11 for liquid is configured to direct liquid to the liquid guide element 21. The outlet 12 for air is designed such that when liquid is consumed in the liquid storage compartment, causing a change in the internal air pressure, the gas inside the support 10 can be transported to the liquid storage compartment, thereby balancing the air pressure inside and outside the support 10 and ensuring smooth transport of the spraying liquid.The air outlet 12 is located above the liquid inlet 11, and the size of the air outlet 12 is smaller than the size of the liquid inlet 11, in order to prevent leakage of the spray liquid through the air outlet 12. The liquid inlet 11 may be single or multiple; preferably, a plurality of liquid inlets 11 are provided, arranged at equal intervals in the circumferential direction along the outer wall of the support 10. Controlling the size of the liquid inlets 11 makes it possible to control the contact area between the spray liquid and the liquid guide element 21, thereby regulating the liquid inlet speed. The air outlet 12 may be single or multiple; preferably, a plurality of air outlets 12 are provided, arranged at a distance from each other in the circumferential direction along the outer wall of the support 10.

[0039] In the present invention, the spray unit also includes a pressure stabilizing tube 30. The pressure stabilizing tube 30 is placed on the outer wall of the support 10 so as to cover the liquid inlet 11 and the air outlet 12. Here, "cover" indicates that the liquid inlet 11 and the air outlet 12 are not directly exposed to the storage space of the liquid storage compartment. Instead, the pressure stabilizing tube 30 is located between the liquid inlet 11 and the liquid storage compartment, and between the air outlet 12 and the liquid storage compartment.Between the inner surface of the wall of the pressure stabilizing tube 30 and the outer surface of the wall of the support 10, a millimeter gap 31 is formed for pressure stabilization, so that the inlet opening 11 for liquid and the outlet opening 12 for air are covered by the inner surface of the wall of the pressure stabilizing tube 30 and are located inside the gap 31 for pressure stabilization. The pressure stabilizing tube 30 is provided with at least one vent opening 32 for pressure stabilization and at least one inlet 33 for liquid for pressure stabilization. The vent opening 32 for pressure stabilization communicates with the outlet opening 12 for air. The outlet opening 12 for air forms a part of the air vent channel, through which air from the spray core 20 enters the liquid storage compartment, the air flows in the direction passing through the air vent channel.That is, the gas from the atomizing core 20 can enter the pressure stabilizing gap 31 through the air outlet 12 and then enter the liquid storage compartment through the pressure stabilizing vent 32. The pressure stabilizing liquid inlet 33 and the liquid inlet 11 are arranged staggeredly and communicate with each other. The pressure stabilizing gap 31 is small, and the surface tension of the atomizing liquid within it generates a capillary phenomenon, which effectively generates a capillary force. This capillary force is affected only by the pressure stabilizing gap 31. That is, when the gap between the pressure stabilizing tube 30 and the support 10 remains constant, the capillary force remains unchanged. Therefore, the liquid level pressure at the liquid inlet of the atomizing core 20 will no longer change depending on the liquid level height in the liquid storage compartment.In addition, the placement of the air outlet 12 inside the pressure stabilization tube 30 also helps to stabilize the pressure value of the gas entering the liquid storage compartment.

[0040] In a specific embodiment, the inlet 33 for the pressure stabilizing liquid is located at the lower part of the side wall of the pressure stabilizing tube 30, and the location of the liquid inlet 11 is higher than the location of the inlet 33 for the pressure stabilizing liquid. When the gap 31 for pressure stabilizing forms narrow gaps and is wetted by the spray liquid, in a wetted state, the spray liquid will rise or leak along the gap 31 for pressure stabilizing. In such a wetted state, the smaller the gap, the higher the liquid rises. Therefore, arranging the inlet 33 for the pressure stabilizing liquid at the lower part of the side wall of the pressure stabilizing tube 30 facilitates the flow of the spray liquid from the liquid storage compartment into the gap 31 for pressure stabilizing, which makes it possible to wet the gap 31 for pressure stabilizing faster and easier.The location of the liquid inlet 11 is higher than the location of the liquid inlet 33 to stabilize the pressure, which helps to ensure sufficient capillary force, allows the spray liquid to move upward along the action of the capillary force and enter the inside of the spray core 20 through the liquid inlet 11.

[0041] In a specific embodiment, the pressure stabilizing vent 32 is located at the upper portion of the side wall of the pressure stabilizing tube 30. This design is advantageous because, when the spray liquid located in the liquid storage compartment is consumed, the pressure stabilizing vent 32 becomes open at the upper portion of the liquid storage compartment. Air entering through the air outlet 12 can then easily pass through the pressure stabilizing vent 32 into the upper space (without spray liquid), that is, the gas-filled space of the liquid storage compartment.

[0042] In a separate embodiment, the liquid inlet 11 is arranged in a circumferential direction along the outer wall surface of the support 10. Accordingly, the pressure stabilizing liquid inlet 33 is arranged in a circumferential direction along the outer wall surface of the pressure stabilizing tube 30. This design ensures that the spray liquid quickly enters from the pressure stabilizing liquid inlet 33 into the pressure stabilizing gap 31 and then quickly moves into the liquid guide member 21 through the liquid inlet 11. In addition, it is preferable that the vertical protrusions of the pressure stabilizing liquid inlet 33 and the liquid inlet 11 overlap, ensuring faster and smoother liquid guidance.In the present invention, the vertical protrusions of one liquid inlet 33 for pressure stabilization may overlap with the protrusion of one liquid inlet 11 or overlap with the protrusions of a plurality of liquid inlets 11. Also, the vertical protrusions of a plurality of liquid inlets 33 for pressure stabilization may overlap with the protrusion of one liquid inlet 11, or the vertical protrusions of a plurality of liquid inlets 33 for pressure stabilization may overlap with the protrusions of a plurality of liquid inlets 11. Similarly, the air outlet 12 is located in the circumferential direction along the outer surface of the wall of the support 10, and, accordingly, the vent hole 32 for pressure stabilization is located in the circumferential direction along the outer surface of the wall of the tube 30 for pressure stabilization.This design ensures that air quickly flows inside the spray core 20 into the gap 31 to stabilize the pressure through the air outlet 12, and then quickly flows into the liquid storage compartment through the ventilation hole 32 to stabilize the pressure.

[0043] In a specific embodiment, since the capillary force is related to the size of the pressure stabilizing gap 31, it is preferable that the pressure stabilizing gap 31 between the inner wall surface of the pressure stabilizing tube 30 and the outer wall surface of the support 10 be less than 1 mm. When humidified, a thinner pressure stabilizing gap 31 ensures a higher liquid lift. This refers to the phenomenon whereby the atomizing liquid, due to differences in cohesive and adhesive forces within the pressure stabilizing gap 31, rises against gravity, thereby smoothly entering the atomizing core 20 through the liquid inlet 11. A design with such a gap size promotes a smoother liquid flow in the atomizing unit.

[0044] In a specific embodiment, the diameter of the liquid inlet 11 is larger than the diameter of the air outlet 12. This design allows the atomizing liquid to enter the atomizing core 20 through the liquid inlet 11 due to capillary force, while the same capillary force prevents the atomizing liquid from leaking through the smaller air outlet 12.

[0045] In a particular embodiment, the liquid inlet 11, the air outlet 12, the pressure stabilizing liquid inlet 33, and the pressure stabilizing vent 32 may be curved holes, straight holes, or a combination thereof, without particular limitation.

[0046] In a specific embodiment, the diameter of the air outlet 12 is less than or equal to 0.5 mm. This further ensures that the atomizing liquid typically used in such components does not leak out of the smaller air outlet 12 due to capillary force. The size of the air outlet 12 is primarily determined based on the viscosity and surface tension of the atomizing liquid. The diameter of the liquid inlet 11 is 1~4 mm, which further ensures that the atomizing liquid typically used in such components can smoothly pass through the liquid inlet 11 due to capillary force. The size of the liquid inlet 11 is primarily determined according to the viscosity and surface tension of the atomizing liquid. Changes in these properties will affect the suitable diameter range for the liquid inlet 11.

[0047] In a separate embodiment, as shown in Fig. 1-6, the support 10 has a cylindrical structure, and the pressure stabilizing tube 30 has a tubular structure with two smaller ends and a larger middle portion. That is, the size of the support 10 remains constant from top to bottom, which facilitates production. The inner diameter at the two ends of the pressure stabilizing tube 30 is substantially the same as or slightly larger than the outer diameter of the support 10. The middle portion of the pressure stabilizing tube 30 can be columnar, and its inner diameter is larger than the outer diameter of the support 10. This makes it possible to seal the two ends of the pressure stabilizing tube 30 on the support 10 with a gap, and maintain a gap between the inner wall surface of the middle portion of the pressure stabilizing tube 30 and the outer wall surface of the support 10, thereby forming a pressure stabilizing gap 31.This configuration facilitates assembly of the spray unit and ensures stable liquid supply and air exchange performance.

[0048] In a separate embodiment, as shown in Fig. 7-12, the pressure stabilizing tube 30 has a cylindrical structure, and the support 10 has a tubular structure with two large ends and a smaller middle section. In the middle section of the support 10, a mounting region 13 is formed corresponding to the pressure stabilizing tube 30. In said mounting region 13, an inlet 11 for liquid and an outlet 12 for air are formed. At both ends of the mounting region 13, mounting steps 131 are provided. The inner diameter of the pressure stabilizing tube 30 is substantially the same as the outer diameter of the two ends of the support 10, and the mounting steps 131 correspond to the two ends of the pressure stabilizing tube 30, ensuring a sealed connection of the two ends of the pressure stabilizing tube 30 with the mounting steps 131.A gap 31 for pressure stabilization is formed between the inner surface of the wall of the tube 30 for pressure stabilization and the inner surface of the wall of the installation area 13. This design gives the spray unit a columnar appearance, generally free of external protrusions, which makes it more aesthetically pleasing, easier to assemble and use, while ensuring a stable supply of liquid and air exchange performance.

[0049] In a separate embodiment, the liquid inlet 11 is provided so as to correspond to the liquid guide member 21. The surface of the liquid guide member 21 facing the support 10 forms the liquid inlet surface 211, and the surface facing the heating element 22 forms the spray surface 212. A hollow air flow channel A is formed inside the liquid guide member 21. The liquid guide member 21 is configured to supply the spray liquid from the liquid inlet surface 211 to the spray surface 212. The heating element 22 sprays the spray liquid on the inner surface of the liquid guide member 21, generating atomized steam. The atomized steam is mixed with air to form an aerosol, which is discharged through the hollow air flow channel A of the support 10.Air outlet 12 is located above liquid guide element 21 and communicates with air flow channel A. This design, on the one hand, reduces the likelihood of spray liquid leakage from air outlet 12, and on the other hand, allows air from air flow channel A to more easily flow into the liquid storage compartment through air outlet 12.

[0050] In a separate embodiment, the heating element 22 comprises a heating circuit 221 and electrode terminals 222 extending from both ends of the heating circuit 221. The heating circuit 221 is attached to the liquid guide element 21 or built into it and is configured to heat and spray liquid for spraying on the spray surface 212 of the liquid guide element 21. The electrode terminals 222 are used to connect with the electrodes for supplying power to the heating circuit 221 to cause it to heat. The spray unit further comprises a fixing plug 40 located in the lower part of the support 10 for fixing the electrode terminals 222. The fixing plug 40 may have through holes for passing the electrode terminals 222 or may have grooves on the outer surface of its wall corresponding to the electrode terminals 222, thereby fixing the electrode terminals 222 in place.This prevents the electrode terminals 222 from being displaced by external forces, thereby avoiding poor contact between the heating element 22 and the liquid guide element 21. In addition, the locking plug 40 is provided with an air inlet, allowing external air to enter the spray unit through such an air inlet.

[0051] The use of the atomizing unit according to the present invention achieves the following effects: by providing a relatively small air outlet 12 on the support 10 of the atomizing core 20 and adding a pressure stabilizing tube 30 outside the support 10 of the atomizing core 20, such a pressure stabilizing tube 30 is mounted on the outside of the support 10, and a pressure stabilizing gap 31 is formed between the pressure stabilizing tube 30 and the support 10. This gap is small, and the surface tension of the atomizing liquid inside the pressure stabilizing gap 31 generates a capillary phenomenon, which effectively generates a capillary force. This capillary force is affected only by the pressure stabilizing gap 31. That is, when the gap between the pressure stabilizing tube 30 and the support 10 remains constant, the capillary force remains unchanged.Consequently, the liquid level pressure at the liquid inlet of the spray core 20 will no longer change depending on the liquid level in the liquid storage compartment. Furthermore, the capillary force created by the gap between the pressure stabilizing tube 30 and the support 10 prevents the spray liquid from leaking through the smaller air outlet 12. When the spray liquid located in the liquid storage compartment is consumed, causing a change in air pressure, the air outlet 12 serves as a passage for air entering the liquid storage compartment. Gas from inside the spray core 20 can enter the pressure stabilizing gap 31 through the air outlet 12. This means that the air pressure inside the liquid storage compartment must be lower than the outside air pressure by a certain value so that air can break through the oil film in the air outlet 12.Therefore, arranging the air outlet 12 inside the pressure stabilization tube 30 also helps stabilize the pressure value of the gas entering the liquid storage compartment, thereby ensuring a stable liquid supply and air exchange performance.

[0052] The present invention also provides a spray device. As shown in Fig. 13-16, the spray device comprises a housing 50, a spray unit 60 located inside the housing 50, an upper sealing element 70 located above the spray unit 60, a sealing seat 80 located under the spray unit 60, and a base 90 located at the bottom of the sealing seat 80 and connected to the housing 50. The upper sealing element 70 and the sealing seat 80 serve to seal the spray unit 60 to prevent liquid leakage. A sealed compartment 100 for storing liquid is formed between the spray unit 60, the housing 50 and the sealing seat 80. The liquid storage compartment 100 stores the liquid for spraying.The inlet 33 for the pressure stabilizing liquid in the spray unit 60 communicates with the liquid storage compartment 100, and the vent hole 32 for pressure stabilization also communicates with the liquid storage compartment 100. When the liquid storage compartment 100 is filled with the liquid for spraying, said liquid enters the spray unit 60 along the liquid inlet channel B; that is, the liquid for spraying enters the gap 31 for pressure stabilization through the inlet 33 for the pressure stabilizing liquid, and then enters the spray core 20 through the liquid inlet 11. When the gap 31 for pressure stabilization between the tube 30 for pressure stabilization and the spray core 20 remains constant, the capillary force remains unchanged.Therefore, the pressure of the liquid level in the liquid inlet 11 of the spray core 20 does not change depending on the liquid level in the liquid storage compartment 100, thereby stabilizing the liquid inlet of the spray unit 60. During operation, the spray unit 60 generates heat to heat the spray liquid to its boiling point for evaporation into atomized vapor. This vapor is mixed with air to form an aerosol, which is subsequently inhaled. When the spray liquid in the liquid storage compartment 100 is consumed, air from the spray core 20 is supplied along the direction of the ventilation channel C; that is, air enters from the air outlet 12 into the gap 31 to stabilize the pressure, and then enters the liquid storage compartment 100 through the ventilation hole 32 to stabilize the pressure.The arrangement of the air outlet 12 within the pressure stabilization tube 30 also helps to stabilize the pressure value of the gas entering the liquid storage compartment 100, thereby ensuring stable air exchange.

[0053] Furthermore, the housing 50 preferably extends inward to form an air flow tube 51. An upper sealing member 70 is fitted onto the lower portion of the air flow tube 51. The upper sealing member 70 is provided with a groove 71, and the upper portion of the support 10 of the atomizing unit 60 is compressed by the groove 71 to ensure airtightness. The upper sealing member 70 prevents the leakage of the atomizing liquid from the liquid storage compartment 100 through the junction between the support 10 and the air flow tube 51, avoiding an adverse effect on the inhalation sensation. The air flow tube 51 communicates with the atomizing core 20, which allows the aerosol generated inside the atomizing core 20 to flow out through the air flow tube 51 for subsequent inhalation.

[0054] In the remaining part, the structure of the spray device is implemented in a conventional way and will not be described in detail in this document.

[0055] The structures of the present invention have been described in detail above with reference to the accompanying drawings. In the above embodiments, the description of various embodiments focuses on different aspects. Details not described in detail in a particular embodiment can be found in the corresponding descriptions of other embodiments. Those skilled in the art will also understand that the actions and blocks mentioned in the description are not necessarily necessary for the present invention. Furthermore, it should be understood that the steps in the embodiments of the method according to the present invention can be performed in a different order, combined, or omitted as practical needs dictate, and the blocks in the embodiments of the device can be combined, separated, or omitted as practical needs dictate.

[0056] Various embodiments of the present invention have been described above. The above description is illustrative, not exhaustive, and is not limited to the disclosed embodiments. Numerous modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the illustrated embodiments of the invention. The choice of terms used herein is intended to best explain the principles, practical application, or improvement of commercially available technology by the claimed embodiments, or to allow others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A spray unit comprising: a support (10) having a hollow structure; and a spray core (20) located in a support (10); wherein the spray core (20) comprises a liquid guide element (21) and a heating element (22) attached to the liquid guide element (21) or built into it, and the support (10) is provided with at least one inlet (11) for liquid and at least one outlet (12) for air, characterized in that it additionally comprises a tube (30) for stabilizing pressure, which is placed on the outer wall of the support (10) in such a way as to cover the inlet opening (11) for liquid and the outlet opening (12) for air; a gap (31) is formed between the inner surface of the tube wall (30) for stabilizing the pressure and the outer surface of the support wall (10) for stabilizing the pressure; the tube (30) for stabilizing the pressure is provided with at least one ventilation hole (32) for stabilizing the pressure and an inlet (33) for liquid for stabilizing the pressure; the ventilation hole (32) for stabilizing the pressure communicates with the outlet hole (12) for air; and the inlet (33) for the liquid to stabilize the pressure and the inlet opening (11) for the liquid are arranged in a staggered manner and communicate with each other.

2. The spray unit according to claim 1, characterized in that the inlet (33) for the pressure stabilizing liquid is located in the lower part of the side wall of the pressure stabilizing tube (30), and the location of the inlet opening (11) for the liquid is higher than the location of the inlet (33) for the pressure stabilizing liquid.

3. The spray unit according to claim 1, in which the vent (32) for pressure stabilization is located in the upper part of the side wall of the tube (30) for pressure stabilization.

4. The spray unit according to claim 1, characterized in that the inlet opening (11) for liquid is located in the circumferential direction along the outer surface of the wall of the support (10), and, accordingly, the inlet (33) for liquid for pressure stabilization is located in the circumferential direction along the outer surface of the wall of the tube (30) for pressure stabilization; and the air outlet (12) is located in the circumferential direction along the outer surface of the support wall (10), and, accordingly, the pressure stabilizing ventilation hole (32) is located in the circumferential direction along the outer surface of the pressure stabilizing tube wall (30).

5. The spray unit according to claim 1, characterized in that the gap (31) for stabilizing the pressure between the inner surface of the wall of the tube (30) for stabilizing the pressure and the outer surface of the wall of the support (10) is less than 1 mm.

6. The spray unit according to claim 1, characterized in that the diameter of the inlet opening (11) for liquid is larger than the diameter of the outlet opening (12) for air.

7. The spray unit according to claim 6, characterized in that the diameter of the outlet opening (12) for air is less than or equal to 0.5 mm, and the diameter of the inlet opening (11) for liquid is in the range from 1 mm to 4 mm.

8. The spray unit according to claim 1, characterized in that the support (10) has a cylindrical design; the pressure stabilizing tube (30) has a tubular structure, the two ends of which are smaller than its middle part; in this case, two ends of the tube (30) for stabilizing the pressure are placed on the support (10) to ensure tightness; and between the inner surface of the wall of the middle part of the tube (30) for stabilizing the pressure and the outer surface of the wall of the support (10) a gap (31) is formed for stabilizing the pressure.

9. The spray unit according to claim 1, characterized in that the tube (30) for stabilizing the pressure has a cylindrical design; the support (10) has a tubular structure, two ends of which are larger than its middle part, while in the middle region of the support (10) with an inward bend, an installation region (13) is formed, corresponding to the tube (30) for stabilizing the pressure; on the installation area (13) there is an inlet (11) for liquid and an outlet (12) for air; at both ends of the installation area (13) installation steps (131) are provided; the two ends of the tube (30) are hermetically connected to the installation stages (131) to stabilize the pressure; and a gap (31) is formed between the inner surface of the tube wall (30) for stabilizing the pressure and the inner surface of the wall of the installation area (13) for stabilizing the pressure.

10. The spray unit according to claim 1, characterized in that the inlet opening (11) for the liquid is made to correspond to the liquid guide element (21); the surface of the liquid guide element (21) facing the support (10) forms the liquid inlet surface (211); the surface of the liquid guide element (21) facing the heating element (22) forms a spray surface (212); a hollow channel (A) for the air flow is formed inside the liquid guide element (21); and the air outlet (12) is located higher than the liquid guide element (21) and communicates with the air flow channel (A).

11. The spray unit according to claim 1, characterized in that the heating element (22) comprises a heating circuit (221) and electrode terminals (222) extending from both ends of the heating circuit (221); wherein the spray unit further comprises a locking plug (40) located in the lower part of the support (10) for locking the electrode terminals (222), wherein the locking plug (40) is provided with an air inlet.

12. A spray device, characterized in that it contains: body (50); a spray unit (60) according to any one of paragraphs 1-11, located inside the housing (50); an upper sealing element (70) located above the spray unit (60); sealing seat (80) located under the spray unit (60); a base (90) located in the lower part of the sealing seat (80) and connected to the body (50); and a sealed compartment (100) for storing liquid, which is formed between the spray unit (60), the body (50) and the sealing seat (80); wherein the inlet (33) for liquid for stabilizing the pressure of the spray unit (60) communicates with the compartment (100) for storing liquid, and the ventilation hole (32) for stabilizing the pressure communicates with the compartment (100) for storing liquid.

13. A spray device according to claim 12, characterized in that the housing (50) extends inward to form a tube (51) for the air flow; the upper sealing element (70) is located at the lower end of the air flow tube (51); the upper sealing element (70) is provided with a groove (71); and the upper end of the support (10) of the spray unit (60) is compressed by a groove (71) to ensure tightness, so that the air flow tube (51) communicates with the spray core (20).

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