A flow guide and atomizing device for cooling

Abstract

The utility model discloses a kind of flow inducer and atomizing device for cooling, the flow inducer for cooling includes: flow inducer main body, the flow inducer main body is equipped with at least one flow channel;The flow channel is equipped with inlet and outlet, the flow diameter of the flow channel is gradually changed along the direction of the inlet towards the outlet First contraction then expansion mode;The inlet is used to connect external high-temperature fluid;The outlet is used to connect external low-temperature fluid and the mixed fluid formed by the external high-temperature fluid and the external low-temperature fluid is discharged.The utility model is designed based on Venturi effect, can quickly mix high and low temperature fluid, reduce mist temperature, and guide airflow to flow stably, thereby effectively solve the problem that the mist temperature of existing atomizing device is high, avoid user scald, guarantee use safety.

Description

Technical Field

[0001] This utility model relates to the field of atomizing device technology, and in particular to a flow guide and atomizing device for cooling. Background Technology

[0002] In existing nebulizers, the high-temperature atomized gas generated by the atomizing components lacks a targeted cooling and mixing structure. The high-temperature atomized gas is usually discharged directly from the device, resulting in a consistently high atomization temperature. In scenarios such as medical nebulization and home nebulization, where close contact with the user is required, this can easily cause burns to the user's skin, posing a significant safety hazard. Utility Model Content

[0003] The purpose of this invention is to overcome the defect of high mist output temperature in existing atomizing devices and to provide a flow guide and atomizing device for cooling.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: In a first aspect, this utility model provides a flow guide for cooling, comprising: a flow guide body, the flow guide body having at least one flow guide channel; the flow guide channel having an inlet and an outlet, the diameter of the flow guide channel having a gradually changing shape of first contraction and then expansion along the direction from the inlet to the outlet; the inlet being used to connect to an external high-temperature fluid; the outlet being used to connect to an external low-temperature fluid and discharge the mixed fluid formed by the external high-temperature fluid and the external low-temperature fluid.

[0005] In one embodiment, the flow guide body is cylindrical, and the axis of the flow guide channel is parallel to the axis of the flow guide body.

[0006] In one embodiment, the flow guiding channel includes a first sub-channel, which is located within the flow guide body and is coaxially arranged with the flow guide body.

[0007] In one embodiment, the flow guiding channel includes a second sub-channel; the second sub-channel is offset from the main body of the flow guide.

[0008] In one embodiment, the second sub-channel is formed by a recess in the outer surface of the flow guide body toward the axial direction of the flow guide body.

[0009] In one embodiment, there are several second sub-channels, which are arranged in a circular pattern around the axis of the main body of the flow guide.

[0010] Secondly, this utility model embodiment also provides an atomizing device, including a flow guide for cooling as described above, and further including an atomizing tube and an atomizing component; the flow guide body and the atomizing component are both installed inside the atomizing tube; the axis of the flow guide channel is arranged parallel to the axis of the atomizing tube; the atomizing component is arranged close to the inlet; a gas mixing chamber is also provided inside the atomizing tube, and the gas mixing chamber is connected to the outlet.

[0011] In one embodiment, the atomizing assembly includes an induction heating tube, a first substrate, and a second substrate; the induction heating tube has a first mounting cavity inside, and a second mounting cavity is formed between the induction heating tube and the atomizing tube, both the first mounting cavity and the second mounting cavity being connected to the inlet; the first substrate is installed in the first mounting cavity; and the second substrate is installed in the second mounting cavity.

[0012] In one embodiment, the first substrate, the induction heating tube, the second substrate, and the atomizing tube are sequentially fitted together, and the circumferential radius of the first substrate is less than or equal to the width of the second substrate.

[0013] In one embodiment, a mesh bag and a plug are also installed inside the atomizing tube; the mesh bag is located between the atomizing component and the guide body; the plug is located at the end of the atomizing component away from the mesh bag and transitionally fits with the atomizing tube, and the plug has an air inlet gap.

[0014] The advantages of this utility model for cooling flow guide and atomizing device compared with the prior art are: based on the Venturi effect, the flow guide channel of the flow guide is designed with a structure that first narrows and then expands, which can quickly mix high and low temperature fluids, reduce the mist outlet temperature, and guide the airflow to flow stably, thereby effectively solving the problem of high mist outlet temperature in existing atomizing devices, avoiding burns to users, and ensuring safe use.

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a cooling guide provided in an embodiment of this utility model; Figure 2A cross-sectional view of a cooling guide provided in an embodiment of this utility model; Figure 3 A cross-sectional view of the atomizing device provided in an embodiment of this utility model; Figure 4 Another cross-sectional view of the atomizing device provided in an embodiment of this utility model; Figure 5 An exploded schematic diagram of the atomizing device provided in an embodiment of this utility model.

[0018] Figure Labels 1. Flow guide body; 11. Flow guide channel; 11a. Inlet; 11b. Outlet; 111. First sub-channel; 112. Second sub-channel; 2. Atomizing tube; 21. Gas mixing chamber; 3. Atomizing component; 31. Induction heating tube; 311. First mounting chamber; 312. Second mounting chamber; 32. First substrate; 33. Second substrate; 4. Mesh bag; 5. Plug; 6. Filter tip. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0026] See Figures 1 to 2As shown, this utility model provides a specific embodiment of a flow guide for cooling, comprising: a flow guide body 1, the flow guide body 1 having at least one flow guide channel 11; the flow guide channel 11 having an inlet 11a and an outlet 11b, the diameter of the flow guide channel 11 having a gradually changing shape of first contraction and then expansion along the direction from the inlet 11a to the outlet 11b; the inlet 11a being used to connect to an external high-temperature fluid; the outlet 11b being used to connect to an external low-temperature fluid and discharge the mixed fluid formed by the external high-temperature fluid and the external low-temperature fluid.

[0027] Specifically, the design principle of this embodiment is based on the Venturi effect in fluid mechanics. By setting at least one flow channel 11 on the main body 1 of the flow guide, and designing the diameter of the flow channel 11 to be a gradually changing shape that first contracts and then expands along the direction from the inlet 11a to the outlet 11b, the external high-temperature fluid can experience changes in velocity and pressure due to the change in the cross-section of the channel when flowing through the flow channel 11. The inlet 11a is used to connect the external high-temperature fluid, providing a channel for the high-temperature fluid to enter the flow channel 11, while the outlet 11b is used to connect the external low-temperature fluid. Utilizing the pressure difference formed by the fluid flow within the flow channel 11, the external low-temperature fluid and high-temperature fluid are mixed at the outlet 11b, thereby achieving the basic structural design for cooling. During operation, the external high-temperature fluid first enters the guide channel 11 through inlet 11a. As the high-temperature fluid flows through the contraction section of the guide channel 11, the flow velocity gradually increases and the pressure decreases accordingly due to the gradually decreasing channel diameter, according to fluid mechanics principles. When the fluid reaches the minimum diameter of the guide channel 11, it enters the expansion section, where the channel diameter gradually increases, the flow velocity gradually decreases, and the pressure gradually increases. During this process, a certain negative pressure is formed at outlet 11b due to the pressure change of the fluid within the guide channel 11, thereby drawing the external low-temperature fluid into the outlet 11b region. The external high-temperature fluid and the low-temperature fluid mix thoroughly at outlet 11b, and finally, the mixed fluid is discharged through outlet 11b, completing one cooling and guiding process. The technical effects achieved in this embodiment are mainly reflected in two aspects: efficient cooling and stable flow guidance. On the one hand, by utilizing the constriction-expansion diameter design of the flow guidance channel 11, the mixing of high-temperature fluid and low-temperature fluid is effectively promoted using the Venturi effect. Compared with the traditional direct mixing method, the mixing is more uniform, the cooling efficiency is significantly improved, and the temperature of the high-temperature fluid can be reduced quickly. On the other hand, the structural design of the flow guidance channel 11 can effectively guide and control the flow direction and velocity of the fluid, avoiding turbulence and eddies during the flow process, ensuring the stability of the fluid flow, reducing energy loss, and at the same time, the overall structure of the flow guide body 1 is simple, making it easy to manufacture, install, and use.

[0028] In one specific embodiment, the flow guide body 1 is arranged in a columnar shape, and the axis of the flow guide channel 11 is arranged parallel to the axis of the flow guide body 1.

[0029] Specifically, the main body 1 of the flow guide is designed as a columnar structure, and the axis of the flow guide channel 11 is set parallel to the axis of the main body 1. The design principle is that the columnar structure has good symmetry and structural stability, which can provide a stable installation foundation for the flow guide channel 11, and at the same time facilitate the installation and positioning of the flow guide in various equipment. The design that the axis of the flow guide channel 11 is parallel to the axis of the main body 1 allows the fluid to flow in a straight line within the flow guide channel 11, reducing the turning and bypassing of the fluid during the flow process, reducing the flow resistance of the fluid, and further ensuring the stability and smoothness of the fluid flow. It also facilitates the processing and manufacturing of the main body 1 and the flow guide channel 11, and improves the processing accuracy.

[0030] In one specific embodiment, the flow guiding channel 11 includes a first sub-channel 111, which is located inside the flow guiding body 1 and is coaxially arranged with the flow guiding body 1.

[0031] Specifically, the flow guiding channel 11 is designed to include a first sub-channel 111, which is located inside the cylindrical flow guiding body 1 and coaxially arranged with the body. The core design principle lies in utilizing the symmetry of the coaxial arrangement: on the one hand, the first sub-channel 111 is coaxial with the cylindrical body, ensuring that it is evenly distributed within the flow guiding body 1 with the body as the center. This ensures balanced structural stress on the flow guiding body 1 and avoids localized stress concentration caused by the eccentricity of the first sub-channel 111. Especially for cylindrical bodies made of metal, this effectively reduces the risk of fatigue cracks caused by stress concentration. Furthermore, the coaxial first sub-channel 111 facilitates cooperation with other coaxially mounted components, ensuring the coaxiality of the overall equipment structure without additional adjustments to the installation direction, thus reducing vibration and noise caused by misalignment of components.

[0032] In one specific embodiment, the flow guiding channel 11 includes a second sub-channel 112; the second sub-channel 112 is off-axis disposed from the flow guide body 1.

[0033] Specifically, the second sub-channel 112 is offset from the columnar main body, and its axis is parallel to the main body axis. This design breaks the limitation of a single coaxial channel, allowing the coaxial first sub-channel 111 and the offset second sub-channel 112 to be integrated simultaneously on the main body 1 of the flow guide, forming a multi-channel structure of "core channel + auxiliary channel". The first sub-channel 111 is responsible for core cooling, balancing force, and reducing installation errors, while the second sub-channel 112 serves as an auxiliary channel to further increase the airflow. At the same time, the offset design can make full use of the internal space of the main body and avoid positional conflicts with the first sub-channel 111. The two work together to ensure the core cooling effect and significantly improve the fluid handling capacity, meeting the needs of high-flow-rate scenarios.

[0034] In one specific embodiment, the second sub-channel 112 is formed by the outer surface of the guide body 1 being recessed toward the axis of the guide body 1.

[0035] Specifically, the flow guide provided in this embodiment is installed inside the outer tube during use. The inner wall of the outer tube and the recessed portion on the outer surface of the main body together constitute the complete inner wall of the second sub-channel 112. This embodiment designs the second sub-channel 112 as a structure formed by a recess on the outer surface of a columnar main body, with the axis of the recessed channel parallel to the axis of the main body, maintaining coordination with the first sub-channel 111. This design retains the core functions of the second sub-channel 112—increasing channel diversity and integrating with the first sub-channel 111 to increase airflow—while simplifying the processing by eliminating the need for drilling inside the main body, reducing manufacturing costs, and avoiding the impact of internal drilling on the structural strength of the main body. This is particularly suitable for thin-walled columnar main body scenarios. Furthermore, it allows heat exchange between the fluid inside the channel and the outer tube, assisting in cooling and complementing the core cooling function of the first sub-channel 111, further enhancing the overall cooling effect.

[0036] In one specific embodiment, there are several second sub-channels 112, and the several second sub-channels 112 are arranged in a circular pattern around the axis of the flow guide body 1.

[0037] Specifically, the circumferential distribution design allows the second sub-channels 112 to utilize the internal or external surface space of the main body more evenly. Compared to a symmetrical distribution, it can accommodate a larger number of second sub-channels 112, while ensuring the main body is stress-balanced and avoiding local stress concentration caused by uneven channel distribution. This design, together with the coaxial first sub-channel 111, forms a "center-circumference" multi-channel layout. The first sub-channel 111 serves as the core, ensuring foundation cooling, stress balance, and installation accuracy. The circumferentially distributed second sub-channels 112 serve as auxiliary channels, significantly increasing the fluid flow path and further improving airflow. At the same time, the circumferential distribution of the multiple channels also makes the fluid mixing more uniform in the outlet 11b area, avoiding excessively high local temperatures and resulting in more stable overall performance.

[0038] Preferably, the inner walls of both the first sub-channel 111 and the second sub-channel 112 are smooth curved surfaces, which can significantly reduce fluid flow resistance, prevent impurity retention, and ensure smooth airflow. The radial cross-section of the inner wall of the first sub-channel 111 is circular, which further optimizes the flow field distribution and improves the stability of high-temperature fluid transmission. The radial cross-section of the inner wall of the second sub-channel 112 is arc-shaped, which, in addition to reducing resistance, allows for precise connection with the inner surface of the outer tube, forming a complete sealed channel, preventing fluid leakage, and ensuring efficient mixing and cooling in conjunction with the first sub-channel 111. Furthermore, in other embodiments, the inner wall cross-sections of the first sub-channel 111 and the second sub-channel 112 can be configured with other shapes.

[0039] It is understood that the flow guide provided by this utility model can be applied to a variety of equipment such as atomizing devices, automotive air conditioning vent flow guide structures, and industrial waste gas pretreatment devices, giving full play to its core advantages of efficient mixing and directional flow guidance, and adapting to the fluid treatment needs of different fields.

[0040] See Figures 3 to 5 This utility model also provides a specific embodiment of an atomizing device, including the flow guide for the atomizing device as described above, and also including an atomizing tube 2 and an atomizing component 3; the flow guide body 1 and the atomizing component 3 are both installed inside the atomizing tube 2; the axis of the flow guide channel 11 is arranged parallel to the axis of the atomizing tube 2; the atomizing component 3 is arranged close to the inlet 11a; a gas mixing chamber 21 is also provided inside the atomizing tube 2, and the gas mixing chamber 21 is connected to the outlet 11b.

[0041] Specifically, this embodiment constructs a synergistic cooling atomization system consisting of an atomizing component 3, a flow guide, and a gas mixing chamber 21, integrating the aforementioned flow guide with the atomizing tube 2 and the atomizing component 3. The atomizing tube 2 serves as the device frame, providing installation space for the flow guide body 1, the atomizing component 3, and the gas mixing chamber 21 to guide the gas flow direction. The flow guide body 1 and the atomizing component 3 are both installed inside the atomizing tube 2, and the axis of the flow guide channel 11 is parallel to the axis of the atomizing tube 2, ensuring that the gas flows in a straight line to reduce resistance. The atomizing component 3 is positioned close to the inlet 11a of the flow guide channel 11, allowing the high-temperature gas it generates to quickly enter the flow guide channel 11. The gas mixing chamber 21 connects to the outlet 11b of the flow guide channel 11, providing both storage and circulation space for the low-temperature gas and a buffer area for mixing high and low temperature gases. By using the constriction-expansion design of the flow channel 11, the Venturi effect is used to accelerate the flow of high-temperature gas, forming a negative pressure to draw low-temperature gas into the gas mixing chamber 21, achieving rapid mixing of the two. The mixed gas is then discharged into the gas mixing chamber 21 and finally discharged from the atomizing tube 2 through the gas mixing chamber 21, completing the complete atomization process of "high-temperature generation - rapid mixing - cooling discharge".

[0042] The technical advantages of this embodiment are mainly reflected in four aspects: efficient mixing, controllable temperature, stable atomization, and safety protection. First, the Venturi effect design of the flow guide significantly improves the mixing speed of high and low temperature gases compared to traditional natural mixing, avoiding localized overheating caused by high-temperature gas stagnation in the atomizing tube 2, ensuring mixing uniformity, and reducing temperature fluctuations in the atomized gas. Second, by adjusting the diameter parameters of the flow guide channel 11 or the supply of low-temperature gas to the gas mixing chamber 21, the final temperature of the mixed gas can be flexibly controlled, adapting to the temperature requirements of different atomization scenarios, and providing a wider temperature adjustment range. Third, the closed structure of the atomizing tube 2 and the directional flow design of the flow guide channel 11 avoid unstable atomization effects caused by gas turbulence, reducing the risk of atomization problems. This design eliminates particle agglomeration and improves atomization quality. Furthermore, the core safety features include: high-temperature gas is rapidly mixed with low-temperature gas via a flow guide, significantly reducing its temperature to a safe level for human contact. After a second buffering and cooling process in the gas mixing chamber 21, the gas is discharged through the atomizing tube 2, completely preventing burns from uncooled high-temperature gas being directly discharged. This is particularly suitable for medical and home atomization applications requiring close-range operation, significantly enhancing device safety. Finally, the modular design allows for independent disassembly and replacement of the flow guide and atomizing components 3, facilitating maintenance and upgrades and reducing operating costs.

[0043] In one specific embodiment, the atomizing component 3 includes an induction heating tube 31, a first substrate 32, and a second substrate 33; the induction heating tube 31 has a first mounting cavity 311 inside, and a second mounting cavity 312 is formed between the induction heating tube 31 and the atomizing tube 2, and both the first mounting cavity 311 and the second mounting cavity 312 are connected to the inlet 11a; the first substrate 32 is installed in the first mounting cavity 311; and the second substrate 33 is installed in the second mounting cavity 312.

[0044] Specifically, the first mounting cavity 311 is connected to the first sub-channel 111, and the second mounting cavity 312 is connected to the second sub-channel 112. Specifically, the induction heating tube 31 is used as the core heating component of the atomizing assembly 3. The first mounting cavity 311 inside the induction heating tube 31 provides an independent space for the first substrate 32, and the second mounting cavity 312 between the induction heating tube 31 and the atomizing tube 2 provides an independent space for the second substrate 33. This dual-cavity structure can achieve "synchronous heating and zoned generation": if a single mounting cavity is used, the mixed heating of the first substrate 32 and the second substrate 33 is prone to uneven heating (such as the difference in thermal conductivity of different substrates leading to excessively high local temperatures). The dual-cavity design of the first mounting cavity 311 and the second mounting cavity 312 allows the first substrate 32 to fit against the inner wall of the induction heating tube 31 and the second substrate 33 to surround the outer wall of the induction heating tube 31, so as to synchronously receive the uniform heat transferred by the induction heating tube 31 and avoid fluctuations in aerosol composition due to heating differences. Secondly, limiting the connection between the first mounting cavity 311 and the first sub-channel 111 is to allow the aerosol generated by the first substrate 32 in the first mounting cavity 311 to be directly guided to the first sub-channel 111, and the aerosol generated by the second substrate 33 in the second mounting cavity 312 to flow naturally to the second sub-channel 112, forming a corresponding relationship of "zoned generation - zoned flow". This ensures that each aerosol can be cooled through the appropriate flow channel 11 (first sub-channel 111 or second sub-channel 112), avoiding interference with heat exchange efficiency after the aerosols from different sources are mixed, and ensuring that the aerosol can quickly enter the cooling stage after generation, reducing heat loss and waste.

[0045] In one specific embodiment, the first substrate 32, the induction heating tube 31, the second substrate 33 and the atomizing tube 2 are sequentially fitted together, and the circumferential radius of the first substrate 32 is less than or equal to the width of the second substrate 33.

[0046] Specifically, the first substrate 32, the induction heating tube 31, the second substrate 33, and the atomizing tube 2 are sequentially fitted together, achieving a tight fit between the components without excessive compression. This fixes the first substrate 32 in the first mounting cavity 311 and the second substrate 33 in the second mounting cavity 312, preventing displacement of the substrates due to airflow impact. It also ensures sufficient contact between the substrates and the heating tube, improving heat transfer efficiency and preventing aerosol leakage or insufficient local heating caused by gaps in the substrates. The circumferential radius of the first substrate 32 is less than or equal to the width of the second substrate 33, which can balance the heating area of ​​both substrates to achieve uniform heating of the first substrate 32 and the second substrate 33. This avoids insufficient mist output due to an excessively small contact area of ​​one substrate or local overheating due to an excessively large contact area. Ultimately, it ensures that the amount of aerosol generated by the two substrates is equivalent, guaranteeing a stable overall mist output of the atomizing device. At the same time, it provides a balanced aerosol input for the subsequent airflow cooling process, ensuring consistent cooling effect.

[0047] Furthermore, the circumferential radius of the first substrate 32 is smaller than or equal to the circumferential radius of the inlet 11a of the first sub-channel 111.

[0048] Specifically, this dimensional relationship ensures that the aerosol generated by the first substrate 32 can smoothly enter the first sub-channel 111, avoiding airflow "bottleneck" caused by the excessively large circumferential radius of the first substrate 32 and the excessively small circumferential radius of the inlet 11a of the first sub-channel 111: If the circumferential radius of the first substrate 32 is larger than the circumferential radius of the inlet 11a of the first sub-channel 111, the aerosol generated by the first substrate 32 will become congested when flowing towards the inlet 11a of the first sub-channel 111 due to the sudden reduction of the flow space, resulting in a sudden increase in airflow resistance, difficulty in suction, and even the problem of aerosol stagnation in the first mounting cavity 311 and heat re-accumulation. The circumferential radius of the first substrate 32 is less than or equal to the circumferential radius of the inlet 11a of the first sub-channel 111, which allows the aerosol to flow smoothly from the area of ​​the first substrate 32 to the inlet 11a of the first sub-channel 111. The flow space is not significantly reduced, and the airflow can smoothly enter the first sub-channel 111. At the same time, it reduces the generation of local eddies and avoids the accumulation of heat caused by eddies. This further ensures the stable cooling effect of the aerosol after entering the guide channel 11, allowing the user to always maintain a relaxed feel when inhaling, and the mist temperature is uniform.

[0049] In one specific embodiment, a mesh bag 4 and a plug 5 are also installed inside the atomizing tube 2; the mesh bag 4 is located between the atomizing component 3 and the guide body 1; the plug 5 is located at the end of the atomizing component 3 away from the mesh bag 4, and transitionally fits with the atomizing tube 2, and the plug 5 is provided with an air inlet gap.

[0050] Specifically, the plug 5, as the first node of the airflow in the atomizing tube 2, can intercept external dust and particles to prevent them from contaminating the first and second substrates 33, thereby avoiding impurities from affecting heating uniformity or entering the guide channel 11 with the aerosol. Its transition fit with the atomizing tube 2 and the reserved air inlet gap can regulate the airflow direction and prevent disordered airflow from causing substrate displacement and aerosol generation disorder. The mesh bag 4 is located on the necessary airflow path between the atomizing component 3 and the guide, and can intercept tiny debris generated by the heating of the substrate to prevent debris from clogging the first and second sub-channels 112 and affecting the cooling efficiency. The two form a full-path protection of "external impurities + internal debris", which is compatible with the complete airflow path and ensures the continuous connection of "airflow-aerosol-multi-channel cooling" and avoids suction problems.

[0051] In one embodiment, the end of the atomizing tube 2 away from the plug 5 is connected to a filter 6, and the gas mixing chamber 21 is located between the filter 6 and the guide body 1.

[0052] Specifically, the filter 6 can perform final purification of the atomized gas discharged from the gas mixing chamber 21, intercepting any tiny substrate debris that may remain, ensuring the cleanliness of the gas inhaled by the user, especially suitable for medical and home scenarios; at the same time, the gas mixing chamber 21 is adjacent to the filter 6, allowing the mixed atomized gas to be quickly and without stagnation delivered to the filter 6, reducing temperature fluctuations caused by gas staying in the tube, ensuring a suitable temperature for the user when inhaling, and avoiding burns; in addition, the filter 6 also provides a comfortable suction interface for the user, improving the user experience, and its connection with the atomizing tube 2 can strengthen the tube's sealing performance, preventing mixed gas leakage. Together with the protection of the plug 5 and the mesh bag 4, it forms a full-path airflow control, ensuring the stability of the "gas production-mixing-delivery-suction" process.

[0053] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A flow guide for cooling, characterized in that, include: The guide body is provided with at least one flow guiding channel; The flow channel has an inlet and an outlet, and the diameter of the flow channel has a gradual shape that first contracts and then expands along the direction from the inlet to the outlet. The inlet is used to connect to an external high-temperature fluid; The outlet is used to connect to an external cryogenic fluid and discharge the mixture formed by the external high-temperature fluid and the external cryogenic fluid.

2. The flow guide for cooling according to claim 1, characterized in that, The main body of the flow guide is cylindrical, and the axis of the flow guide channel is parallel to the axis of the main body of the flow guide.

3. The flow guide for cooling according to claim 2, characterized in that, The flow guiding channel includes a first sub-channel, which is located inside the flow guide body and is coaxially arranged with the flow guide body.

4. The flow guide for cooling according to claim 2, characterized in that, The flow guiding channel includes a second sub-channel; the second sub-channel is offset from the main body of the flow guide.

5. The flow guide for cooling according to claim 4, characterized in that, The second sub-channel is formed by a recess on the outer surface of the flow guide body toward the axial direction of the flow guide body.

6. The flow guide for cooling according to claim 4, characterized in that, The number of the second sub-channels is several, and the several second sub-channels are arranged in a circle around the axis of the main body of the flow guide.

7. An atomizing device, characterized in that, The device includes a cooling guide as described in any one of claims 1-6, and further includes an atomizing tube and an atomizing component; the main body of the guide and the atomizing component are both installed inside the atomizing tube; the axis of the guide channel is arranged parallel to the axis of the atomizing tube; the atomizing component is arranged close to the inlet; a gas mixing chamber is also provided inside the atomizing tube, and the gas mixing chamber is connected to the outlet.

8. The atomizing device according to claim 7, characterized in that, The atomizing assembly includes an induction heating tube, a first substrate, and a second substrate; the induction heating tube has a first mounting cavity inside, and a second mounting cavity is formed between the induction heating tube and the atomizing tube, both the first mounting cavity and the second mounting cavity are connected to the inlet; the first substrate is installed in the first mounting cavity; and the second substrate is installed in the second mounting cavity.

9. The atomizing device according to claim 8, characterized in that, The first substrate, the induction heating tube, the second substrate, and the atomizing tube are sequentially fitted together, and the circumferential radius of the first substrate is less than or equal to the width of the second substrate.

10. The atomizing device according to claim 7, characterized in that, The atomizing tube is also equipped with a mesh bag and a plug; the mesh bag is located between the atomizing component and the main body of the flow guide; the plug is located at the end of the atomizing component away from the mesh bag and transitionally fits with the atomizing tube, and the plug is provided with an air inlet gap.

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