Heating humidifier

Abstract

The utility model relates to a kind of heating humidifier, it includes: shell, mist outlet cylinder, heating piece and fan. Shell top is provided with mist outlet hole. Mist outlet cylinder is installed in shell, and mist outlet cylinder is equipped with heating cavity, airflow outlet and airflow channel, the top end of heating cavity is steam outlet, airflow outlet is arranged around steam outlet, and is communicated with airflow channel. Heating piece is installed in shell, and is communicated with heating cavity, and heating piece is used to heat the liquid in evaporation heating cavity. Fan is installed in shell, and is respectively communicated with airflow channel and outside, and fan is configured to provide airflow that sequentially passes through airflow channel and airflow outlet, and airflow flows out from airflow outlet to mix steam that flows out from steam outlet, and diffuses to outside through mist outlet hole.

Description

Technical Field

[0001] This utility model relates to the field of humidifier technology, and more specifically, to a heating humidifier. Background Technology

[0002] Humidifiers are devices used to alleviate environmental dryness. Their core function is to convert liquid water into gaseous water particles and evenly diffuse them into the airflow to increase its humidity. To improve the vaporization efficiency of liquid water and the quality of the humidified airflow, some existing humidifiers incorporate a heating module. This module heats the liquid, causing it to boil and form steam, which is then released from the mist outlet. However, the steam released from the mist outlet is quite hot, and users are easily burned when near the humidifier, affecting both comfort and safety. Utility Model Content

[0003] The purpose of this invention is to provide a heating humidifier, which solves the technical problem of how to improve the comfort and safety of use.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] This utility model provides a heating humidifier, comprising: a housing with a mist outlet at the top; a mist outlet cylinder installed inside the housing, the mist outlet cylinder having a heating chamber, an airflow outlet, and an airflow channel, the top of the heating chamber being a steam outlet, the airflow outlet being arranged around the steam outlet and communicating with the airflow channel; a heating element installed inside the housing and communicating with the heating chamber, the heating element being used to heat and evaporate the liquid inside the heating chamber; and a fan installed inside the housing and communicating with the airflow channel and the outside, the fan being configured to provide airflow passing sequentially through the airflow channel and the airflow outlet, the airflow exiting from the airflow outlet to mix with the steam exiting from the steam outlet, and diffusing to the outside through the mist outlet.

[0006] In some embodiments of this application, the mist outlet further includes a mixing chamber located directly above the heating chamber and opposite to the mist outlet. The airflow channel surrounds the mixing chamber and communicates with the mixing chamber through the airflow outlet.

[0007] In some embodiments of this application, the mist outlet includes a hollow cylindrical inner cylinder and an annular flow channel structure; the inner cylinder includes a first cylindrical section, a second cylindrical section, and a supporting section, the first cylindrical section and the second cylindrical section are coaxially arranged, and the size of the first cylindrical section is larger than that of the second cylindrical section, the top end of the second cylindrical section encloses to form the steam outlet, and the supporting section is used to connect the bottom end of the first cylindrical section and the top end of the second cylindrical section; the flow channel structure is located inside the first cylindrical section and supported on the supporting section, the flow channel structure has an airflow channel inside, the mixing cavity is formed between the inner sidewalls of the flow channel structure, and the airflow outlet is opened on the inner sidewall of the flow channel structure.

[0008] In some embodiments of this application, the mist outlet further includes an outer cylinder, which is nested outside the inner cylinder. A first channel extending vertically is formed on the inner wall of the outer cylinder, and a heat insulation cavity is formed between the inner wall of the outer cylinder and the outer wall of the inner cylinder. A vertically extending air duct is provided inside the outer shell, which passes through the first channel. A second channel is formed inside the air duct, and the top and bottom ends of the second channel are respectively connected to the airflow channel and the fan. The first channel, the heat insulation cavity, the second channel, and the heating cavity are not interconnected.

[0009] In some embodiments of this application, the outer cylinder includes a third cylinder, a fourth cylinder, and a connecting portion. The third cylinder is nested outside the fourth cylinder, and the connecting portion is used to connect the bottom end of the third cylinder and the bottom end of the fourth cylinder. The second cylinder is coaxially connected to the fourth cylinder, and the heating cavity is formed between the inner walls of the second cylinder and the inner walls of the fourth cylinder. The heat insulation cavity is formed by the inner walls of the third cylinder, the connecting portion, the outer walls of the fourth cylinder, the outer walls of the second cylinder, and the supporting portion.

[0010] In some embodiments of this application, a first notch is provided on the first cylindrical portion, and a second notch is provided on the support portion; the flow channel structure includes a body and a guide body; the body has an annular structure, the airflow channel is provided inside the body, the airflow outlet is provided on the inner sidewall of the body, and the airflow inlet is provided on the top wall of the body; the cross-section of the guide body is inverted U-shaped, and includes a first part, a second part, and a third part that is connected to the top of the first part and the top of the second part respectively. The first part and the second part both extend vertically, and the length of the first part is less than the length of the second part. The bottom end of the first part is connected to the top wall of the body, and the bottom end of the second part is connected to the top of the duct through the second notch. The third part extends horizontally and extends into the first cylindrical portion through the first notch, and the third part is arranged vertically opposite to the airflow inlet.

[0011] In some embodiments of this application, the inner wall of the flow channel structure is arranged in an inclined manner, and the mixing chamber is arranged in a gradually expanding manner from bottom to top.

[0012] In some embodiments of this application, a water storage cavity is formed between the outer wall of the outer cylinder and the inner wall of the outer shell; a water passage groove is formed between the outer cylinder and the inner cylinder, and the water passage groove and the first channel are arranged at intervals around the heating cavity; the heating humidifier further includes a water passage component, which is disposed in the water passage groove, and the water passage component is provided with a water passage hole and a water inlet hole. The water passage component is provided with a water passage cavity, which is connected to the water storage cavity through the water passage hole and to the heating cavity through the water inlet hole. A float ball for opening or blocking the water passage hole is provided in the water passage cavity.

[0013] In some embodiments of this application, the outer casing includes a base, a housing, and a top cover; the housing is mounted on the base, the top of the housing has an opening, the bottom of the housing is fitted with the heating element and the fan, and has an installation groove, the bottom wall of the installation groove has a clearance opening, the mist outlet is embedded in the installation groove, the outer wall of the mist outlet forms a seal with the side wall of the installation groove, and the heating chamber communicates with the heating element through the clearance opening; the top cover is connected to the housing and is used to close the opening, and the top cover has the mist outlet hole.

[0014] In some embodiments of this application, the number of airflow outlets is several, and the several airflow outlets are arranged in a ring at intervals to surround the steam outlet.

[0015] As can be seen from the above technical solution, the embodiments of this utility model have at least the following advantages and positive effects: In this embodiment of the heating humidifier, when the heating element continuously heats the liquid in the heating chamber to boiling point, high-temperature steam is generated, and the steam naturally diffuses upwards to the steam outlet. During this process, the fan starts working, and the airflow it generates flows through the airflow channel to the airflow outlet, then flows out from the airflow outlet and surrounds the steam flowing out from the steam outlet. This airflow and steam mix to form a mixed airflow, which diffuses outwards through the mist outlet at the top of the outer casing. Thus, the heating humidifier can release humid gas into the surrounding environment to achieve its humidification function. Furthermore, the mixing of airflow and steam cools the steam, avoiding the potential safety hazards of directly spraying high-temperature steam, thereby improving user comfort and safety. Moreover, the arrangement of the airflow outlet surrounding the steam outlet ensures that the airflow mixes evenly with the steam from all directions, further enhancing user comfort and safety. Attached Figure Description

[0016] The various objectives, features, and advantages of this invention will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein: Figure 1 This is a schematic diagram of a heating humidifier according to an exemplary embodiment.

[0017] Figure 2 yes Figure 1 A sectional view.

[0018] Figure 3 yes Figure 1 A cross-sectional view from another angle.

[0019] Figure 4 yes Figure 2 A schematic diagram of the mist outlet.

[0020] Figure 5 yes Figure 4 A schematic diagram of its decomposed structure.

[0021] Figure 6 yes Figure 1 A schematic diagram of the exploded structure of the outer shell.

[0022] Figure 7 yes Figure 6 A structural diagram from another perspective.

[0023] The annotations in the attached figures are explained as follows: 1. Outer shell; 11. Base; 111. Air inlet; 12. Housing; 121. Mounting slot; 122. Clearance opening; 13. Top cover; 131. Mist outlet; 14. Air duct; 141. Second channel; 15. Water storage chamber; 2. Mist outlet; 21. Inner cylinder; 211. First cylinder section; 2111. First notch; 212. Second cylinder section; 2121. Steam outlet; 213. Support section; 2131. Second notch; 22. Flow channel structure; 221. Main body; 2211. Airflow channel; 2212. Airflow outlet; 2213. Mixing chamber; 2214. Airflow inlet; 222. Guide body; 2221. First part; 2222. Second part; 2223. Third part; 23. Outer cylinder; 231. Third cylinder section; 232. Fourth cylinder section; 233. Connecting part; 234. First channel; 24. Heating chamber; 25. Insulation chamber; 26. Water trough; 3. Heating element; 4. Fan; 5. Water passage component; 51. Water passage cavity; 511. Water passage hole; 512. Water inlet hole; 52. Float ball. Detailed Implementation

[0024] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0025] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0026] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0027] Please see Figure 1 and Figure 2 The heating humidifier provided in one embodiment of this utility model mainly includes a shell 1, a mist outlet 2, a heating element 3, and a fan 4. A mist outlet 131 is provided at the top of the shell 1. The mist outlet 2 is installed inside the shell 1 and has a heating chamber 24, an airflow outlet 2212, and an airflow channel 2211. The top of the heating chamber 24 is a steam outlet 2121, and the airflow outlet 2212 is arranged around the steam outlet 2121 and communicates with the airflow channel 2211. The heating element 3 is installed inside the shell 1 and communicates with the heating chamber 24. The heating element 3 is used to heat and evaporate the liquid inside the heating chamber 24. The fan 4 is installed inside the shell 1 and communicates with both the airflow channel 2211 and the outside. The fan 4 is configured to provide airflow that passes sequentially through the airflow channel 2211 and the airflow outlet 2212, and the airflow flows out from the airflow outlet 2212 to mix with the steam flowing out from the steam outlet 2121, and diffuses to the outside through the mist outlet 131.

[0028] In this embodiment of the heating humidifier, when the heating element 3 continuously heats the liquid in the heating chamber 24 to boiling point, high-temperature steam is generated, and the steam naturally diffuses upward to the steam outlet 2121. During this process, the fan 4 starts working, and the airflow it generates flows through the airflow channel 2211 to the airflow outlet 2212, then flows out from the airflow outlet 2212 and surrounds the steam flowing out from the steam outlet 2121. The airflow and steam mix to form a mixed airflow, which diffuses outward through the mist outlet 131 on the top of the outer casing 1. Thus, the heating humidifier can release humid gas into the surrounding environment to achieve its humidification function, and the mixing of airflow and steam can cool the steam, avoiding the safety hazards that may be caused by directly spraying high-temperature steam, thereby improving the comfort and safety of use. Furthermore, the arrangement of the airflow outlet 2212 surrounding the steam outlet 2121 ensures that the airflow mixes evenly with the steam from all directions, thereby further improving the comfort and safety of use.

[0029] Please see Figures 2 to 4 In a specific embodiment, the mist outlet 2 is further provided with a mixing chamber 2213, which is located directly above the heating chamber 24 and is arranged opposite to the mist outlet 131. An airflow channel 2211 surrounds the mixing chamber 2213 and communicates with it through an airflow outlet 2212. Since the mixing chamber 2213 is located directly above the heating chamber 24 and opposite to the mist outlet 131, high-temperature steam flows upward from the steam outlet 2121 and naturally enters the mixing chamber 2213. At this time, the airflow originates from the fan 4, flows through the airflow channel 2211, and enters the mixing chamber 2213 through the airflow outlet 2212, mixing with the steam. Therefore, through the specific arrangement of the mixing chamber 2213, heating chamber 24, airflow channel 2211, airflow outlet 2212, and mist outlet 131, the mixing process between steam and airflow can be optimized, and the mixing effect can be improved.

[0030] Please see Figures 2 to 5In a specific embodiment, the mist outlet 2 includes a hollow cylindrical inner cylinder 21 and an annular flow channel structure 22. The inner cylinder 21 includes a first cylindrical section 211, a second cylindrical section 212, and a support section 213. The first cylindrical section 211 and the second cylindrical section 212 are coaxially arranged, and the first cylindrical section 211 is larger than the second cylindrical section 212. The top end of the second cylindrical section 212 forms a steam outlet 2121. The support section 213 connects the bottom end of the first cylindrical section 211 and the top end of the second cylindrical section 212. The flow channel structure 22 is located inside the first cylindrical section 211 and supported on the support section 213. An airflow channel 2211 is provided inside the flow channel structure 22, a mixing chamber 2213 is formed between the inner sidewalls of the flow channel structure 22, and an airflow outlet 2212 is provided on the inner sidewall of the flow channel structure 22. By refining the structure of the mist outlet 2, a specific and feasible implementation method is provided for dividing the mist outlet 2 into different functional areas. The first cylinder 211, the second cylinder 212, and the support 213 of the inner cylinder 21 provide stable support and reasonable installation space for the flow channel structure 22, making the overall structure more stable. The flow channel structure 22 provides a structural basis for the formation of the airflow channel 2211 and the airflow outlet 2212.

[0031] In a specific embodiment, the mist outlet 2 further includes an outer cylinder 23, which is nested outside the inner cylinder 21. A first channel 234 extending vertically is formed on the inner wall of the outer cylinder 23, and a heat insulation cavity 25 is formed between the inner wall of the outer cylinder 23 and the outer wall of the inner cylinder 21. A vertically extending air duct 14 is provided inside the outer shell 1, which passes through the first channel 234. A second channel 141 is formed inside the air duct 14, and the top and bottom ends of the second channel 141 are respectively connected to the airflow channel 2211 and the fan 4. The first channel 234, the heat insulation cavity 25, the second channel 141, and the heating cavity 24 are not interconnected.

[0032] The duct 14 extends upward through the first channel 234 and cooperates with the flow channel structure 22 supported on the support part 213 of the inner cylinder 21, making the overall structure more compact and reasonable, thereby improving the utilization rate of the internal space. On the other hand, the setting of the heat insulation cavity 25 can reduce the possibility of heat loss from the heating cavity 24, improve the heating mist production efficiency of the heating humidifier, and the setting of the heat insulation cavity 25 and the first channel 234 can also effectively isolate the heat exchange between the heating cavity 24 and the second channel 141, ensuring that the airflow flowing through the air inlet channel maintains a low temperature, thereby providing good conditions for subsequent mixing with steam and effectively reducing the steam temperature.

[0033] In a specific embodiment, the outer cylinder 23 includes a third cylinder 231, a fourth cylinder 232, and a connecting portion 233. The third cylinder 231 is nested outside the fourth cylinder 232, and the connecting portion 233 is used to connect the bottom end of the third cylinder 231 and the bottom end of the fourth cylinder 232. The second cylinder 212 is coaxially connected to the fourth cylinder 232. A heating cavity 24 is formed between the inner walls of the second cylinder 212 and the inner walls of the fourth cylinder 232. A heat insulation cavity 25 is formed by the inner wall of the third cylinder 231, the connecting portion 233, the outer wall of the fourth cylinder 232, the outer wall of the second cylinder 212, and the support portion 213.

[0034] By refining the structure of the outer cylinder 23 and matching the shape between the outer cylinder 23 and the inner cylinder 21, a specific structural basis is provided for the formation of the heating cavity 24 and the heat insulation cavity 25, thereby making the overall structure more stable and reliable. Furthermore, since the formation of the heat insulation cavity 25 and the heating cavity 24 does not require the participation of the first cylinder 211, the interference and influence on the airflow in the airflow channel 2211 can be further reduced.

[0035] In a specific embodiment, a first notch 2111 is provided on the first cylindrical portion 211, and a second notch 2131 is provided on the support portion 213. The flow channel structure 22 includes a body 221 and a guide body 222. The body 221 has an annular structure, an airflow channel 2211 is provided inside the body 221, an airflow outlet 2212 is provided on the inner sidewall of the body 221, and an airflow inlet 2214 is provided on the top wall of the body 221. The guide body 222 has an inverted U-shaped cross-section and includes a first part 2221, a second part 2222, and a third part 2223 connected to the top of the first part 2221 and the top of the second part 2222 respectively. The first part 2221 and the second part 2222 both extend vertically, and the length of the first part 2221 is less than the length of the second part 2222. The bottom end of the first part 2221 is connected to the top wall of the body 221. The bottom end of the second part 2222 is connected to the top of the air duct 14 through the second notch 2131. The third part 2223 extends horizontally and partially extends into the first cylinder 211 through the first notch 2111. The third part 2223 is arranged vertically opposite to the airflow inlet 2214.

[0036] The inverted U-shaped structure of the guide body 222 and the connection method between the guide body 222, the duct 14, and the main body 221 provide a smooth and continuous flow path for the airflow. After the airflow flows out of the second channel 141 inside the duct 14, it can naturally enter the airflow channel 2211 along the shape of the guide body 222, reducing the resistance caused by turning and collision during the flow of the airflow, reducing energy loss, and enabling the fan 4 to deliver the airflow to the airflow channel 2211 more efficiently.

[0037] In this embodiment, the first part 2221 and the third part 2223, as well as the second part 2222 and the third part 2223, are connected by an arc transition. The arc transition connection allows the airflow to change direction more smoothly, guides the airflow to gradually change direction, avoids sudden turns of the airflow, thereby reducing airflow separation and ensuring that the airflow can enter the airflow channel 2211 stably and efficiently.

[0038] In a specific embodiment, the inner wall of the flow channel structure 22 is arranged in an inclined manner, and the mixing chamber 2213 is arranged in a gradually expanding manner from bottom to top. Since the air outlet 2212 is located on the inner wall, when the airflow flows out through the air outlet 2212, its flow direction can be decomposed into a horizontal direction flowing into the mixing chamber 2213 and a vertical direction flowing upward along the mixing chamber 2213. Therefore, the inclined arrangement of the inner wall can promote the full mixing of airflow and steam, and ensure that airflow and steam can be carried upward and flow out from the mist outlet 131. On the other hand, the gradual expansion of the mixing chamber 2213 from bottom to top can reduce the upward flow velocity of airflow and steam, so that airflow and steam stay in the mixing chamber 2213 for a longer time, thereby further promoting the full mixing of airflow and steam.

[0039] Please see Figure 2 and Figure 3 In a specific embodiment, a water storage cavity 15 is formed between the outer wall of the outer cylinder 23 and the inner wall of the outer shell 1. A water passage groove 26 is formed between the outer cylinder 23 and the inner cylinder 21, and the water passage groove 26 and the first channel 234 are arranged around the heating cavity 24 at intervals. The heating humidifier also includes a water passage component 5, which is disposed in the water passage groove 26. The water passage component 5 has a water passage hole 511 and a water inlet hole 512. The water passage component 5 has a water passage cavity 51 inside, which communicates with the water storage cavity 15 through the water passage hole 511 and with the heating cavity 24 through the water inlet hole 512. The water passage cavity 51 is provided with a float ball 52 for opening or blocking the water passage hole 511.

[0040] Specifically, the water storage chamber 15 is used to store cold water. When the water level in the heating chamber 24 is low, the float 52 in the water passage chamber 51 descends to open the water passage hole 511 located at the top of the water passage chamber 51. The cold water in the water storage chamber 15 enters the water passage chamber 51 through the water passage hole 511, flows through the gap between the float 52 and the inner wall of the water passage chamber 51, and enters the heating chamber 24 to replenish the water in the heating chamber 24, thereby establishing an automatic water replenishment mechanism. This automatic water replenishment mechanism eliminates the need for users to frequently add water manually, improving the convenience of use and reducing equipment damage or safety hazards caused by the heating humidifier operating when the water level is too high or too low, thus improving the stability and safety of use.

[0041] Please see Figure 6 and Figure 7In a specific embodiment, the outer casing 1 includes a base 11, a housing 12, and a top cover 13. The housing 12 is mounted on the base 11, and has an opening at the top. A heating element 3 and a fan 4 are mounted at the bottom of the housing 12, and a mounting groove 121 is provided. A clearance opening 122 is provided on the bottom wall of the mounting groove 121. The mist outlet 2 is embedded in the mounting groove 121, and the outer wall of the mist outlet 2 forms a seal with the side wall of the mounting groove 121. The heating chamber 24 communicates with the heating element 3 through the clearance opening 122. The top cover 13 is connected to the housing 12 and is used to close the opening. A mist outlet 131 is provided on the top cover 13.

[0042] The base 11, housing 12, and top cover 13 of the outer casing 1 together form the basic frame of the heating humidifier. The housing 12 serves as the main frame of the heating humidifier, providing a foundation for the installation and fixation of other components. Through the specific cooperation between the housing 12, the base 11, the heating element 3, the fan 4, the mist outlet 2, and the top cover 13, the structural stability and integrity of the entire device are ensured, and the heating humidifier can stably and safely perform its humidification function.

[0043] In this embodiment, the air duct 14 is located inside the housing 12, and the base 11 has several air inlets 111 that communicate with the fan 4.

[0044] Please see Figures 2 to 5 In a specific embodiment, there are several airflow outlets 2212, and these outlets 2212 are arranged in a ring at intervals to surround the steam outlet 2121. Each airflow outlet 2212 independently guides a portion of the airflow, so that the airflows from different directions converge around the steam outlet 2121, forming a multi-directional surrounding effect on the steam, which is conducive to the full contact and mixing of the airflow and the steam.

[0045] In other embodiments, the number of airflow outlets 2212 is one or more, and all airflow outlets 2212 are annular, surrounding the steam outlet 2121. When there are multiple airflow outlets 2212, they are arranged coaxially and spaced apart axially. The annular airflow outlets 2212 can concentrate and guide the airflow into a ring-shaped airflow bundle surrounding the steam outlet 2121. When multiple annular airflow outlets 2212 are arranged coaxially and spaced apart axially, the airflow bundles at different heights can form a layered airflow field in the axial direction, mixing with the steam at multiple levels, making the mixing process more thorough.

[0046] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A heating humidifier, characterized in that, include: The outer casing has a mist outlet at the top; A mist outlet is installed inside the outer casing. The mist outlet is provided with a heating chamber, an airflow outlet, and an airflow channel. The top of the heating chamber is a steam outlet. The airflow outlet is arranged around the steam outlet and communicates with the airflow channel. A heating element is installed inside the outer casing and communicates with the heating chamber; the heating element is used to heat and evaporate the liquid inside the heating chamber. A fan is installed inside the housing and communicates with the airflow channel and the outside. The fan is configured to provide airflow that passes sequentially through the airflow channel and the airflow outlet, and the airflow exits from the airflow outlet to mix with steam exiting from the steam outlet and diffuses to the outside through the mist outlet.

2. The heating humidifier according to claim 1, characterized in that, The mist outlet is also provided with a mixing chamber, which is located directly above the heating chamber and is arranged opposite to the mist outlet. The airflow channel is arranged around the mixing chamber and communicates with the mixing chamber through the airflow outlet.

3. The heating humidifier according to claim 2, characterized in that, The mist outlet includes a hollow inner cylinder and an annular flow channel structure. The inner cylinder includes a first cylinder section, a second cylinder section, and a support section. The first cylinder section and the second cylinder section are arranged coaxially, and the size of the first cylinder section is larger than that of the second cylinder section. The top end of the second cylinder section forms the steam outlet. The support section is used to connect the bottom end of the first cylinder section and the top end of the second cylinder section. The flow channel structure is located inside the first cylindrical part and supported on the support part. The flow channel structure has an airflow channel inside, the mixing cavity is formed between the inner sidewalls of the flow channel structure, and the airflow outlet is opened on the inner sidewall of the flow channel structure.

4. The heating humidifier according to claim 3, characterized in that, The mist outlet also includes an outer cylinder, which is nested outside the inner cylinder. A first channel extending vertically is formed on the inner wall of the outer cylinder, and a heat insulation cavity is formed between the inner wall of the outer cylinder and the outer wall of the inner cylinder. The outer casing is provided with a vertically extending air duct, which passes through the first channel and forms a second channel. The top and bottom ends of the second channel are respectively connected to the airflow channel and the fan. The first channel, the heat insulation cavity, the second channel, and the heating cavity are not interconnected.

5. The heating humidifier according to claim 4, characterized in that, The outer cylinder includes a third cylinder section, a fourth cylinder section, and a connecting section. The third cylinder section is nested outside the fourth cylinder section, and the connecting section is used to connect the bottom end of the third cylinder section and the bottom end of the fourth cylinder section. The second cylindrical portion is coaxially connected to the fourth cylindrical portion, and the heating cavity is formed between the inner walls of the second cylindrical portion and the inner walls of the fourth cylindrical portion. The heat insulation cavity is formed by the inner wall of the third cylindrical portion, the connecting portion, the outer wall of the fourth cylindrical portion, the outer wall of the second cylindrical portion, and the supporting portion.

6. The heating humidifier according to claim 4, characterized in that, The first cylindrical portion has a first notch, and the support portion has a second notch; The flow channel structure includes a body and a guide body; The body has a ring-shaped structure, the airflow channel is provided inside the body, the airflow outlet is opened on the inner side wall of the body, and the airflow inlet is opened on the top wall of the body; The guide body has an inverted U-shaped cross-section and includes a first part, a second part, and a third part that is connected to the top of the first part and the top of the second part, respectively. Both the first part and the second part extend vertically, and the length of the first part is less than the length of the second part. The bottom end of the first part is connected to the top wall of the body, and the bottom end of the second part is connected to the top of the duct through the second notch. The third part extends horizontally and extends into the first cylinder through the first notch. The third part is arranged vertically opposite to the airflow inlet.

7. The heating humidifier according to claim 3, characterized in that, The inner wall of the flow channel structure is arranged in an inclined manner, and the mixing chamber is arranged in a gradually expanding manner from bottom to top.

8. The heating humidifier according to claim 4, characterized in that, A water storage cavity is formed between the outer wall of the outer cylinder and the inner wall of the outer shell; A water passage groove is formed between the outer cylinder and the inner cylinder, and the water passage groove and the first channel are arranged at intervals around the heating cavity; The heating humidifier also includes a water passage component, which is disposed in the water passage tank. The water passage component has a water passage hole and a water inlet hole. The water passage component has a water passage cavity, which is connected to the water storage cavity through the water passage hole and to the heating cavity through the water inlet hole. The water passage cavity is provided with a float ball for opening or blocking the water passage hole.

9. The heating humidifier according to claim 1, characterized in that, The outer casing includes a base, a housing, and a top cover; The housing is mounted on the base. The top of the housing has an opening. The bottom of the housing is equipped with the heating element and the fan, and has an installation groove. The bottom wall of the installation groove has a clearance opening. The mist outlet is embedded in the installation groove. The outer wall of the mist outlet is sealed with the side wall of the installation groove. The heating chamber is connected to the heating element through the clearance opening. The top cover is connected to the box body and is used to close the opening. The top cover has the mist outlet.

10. The heating humidifier according to claim 1, characterized in that, The number of airflow outlets is several, and the several airflow outlets are arranged in a ring at intervals to surround the steam outlet.

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