Heating type humidifier

By designing open top water passages and cold and hot mist notches that open upwards in a heated humidifier, combined with isolation and guide housing, the problem of hot water reflux and cleaning is solved, and more efficient mist is achieved Output and convenience of use.

CN222256859UActive Publication Date: 2024-12-27AIRPLOVE(XIAMEN)ELECTRONICS CO LTD
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Patent Information

Application Number
CN202420344009.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-02-23
Publication Date
2024-12-27
Estimated Expiration
2034-02-23

AI Technical Summary

Technical Problem

In the design of existing heated humidifiers, the water passage is in the shape of a pipe and is located in the enclosed space, resulting in inconvenient cleaning and a risk of hot water backflow, which may damage the atomizer.

Method used

Design the top of the water passage opens and opens upwards in the cold mist groove and heating groove notches, increasing the height difference to limit the backflow of hot water, while introducing an isolation housing and a guide housing to separate the heating groove and the water passage, providing Water inlet and thermal mist outlet, and fog output efficiency is improved through tapered hole guide channels.

Benefits of technology

It effectively reduces the risk of hot water backflow, improves the cleaning convenience of the water passage, avoids damage to atomizers, and improves the uniformity and comfort of mist output.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of humidifiers, and discloses a heating type humidifier which comprises a base. The base is provided with a cold fog groove, a heating groove and a water passing channel, the cold fog groove is used for loading an atomizing part, the heating groove is used for loading a heating part, groove openings of the cold fog groove and the heating groove are opened upwards, the two ends of the water passing channel are communicated with the cold fog groove and the heating groove respectively, the top of the water passing channel is opened, and the communicating position of the heating groove and the water passing channel is higher than the groove bottom of the heating groove. According to the heating type humidifier, the risk of hot water backflow can be reduced, and the convenience of cleaning of the water passing channel is improved.
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Description

Technical Field

[0001] The utility model relates to the field of humidifiers, in particular to a heating type humidifier. Background Art

[0002] Air humidity is one of the important factors affecting environmental comfort, especially in northern regions and places where air conditioners are often used. Therefore, humidifiers have become a must-have small appliance for many families. Among them, heated humidifiers are very popular because they can provide users with mist at a suitable temperature.

[0003] In the prior art, a heating humidifier is provided, which includes a shell and a base. The base is installed in the shell. The base has a cold mist groove, a heating groove and a water passage. The two ends of the water passage are respectively connected to the bottom of the cold mist groove and the heating groove. The water passage can guide the water in the cold mist groove into the heating groove to supply water to the hot water groove. The cold mist groove and the heating groove provide cold and hot mist respectively. The cold and hot mist are combined to obtain mist with a suitable temperature.

[0004] In order to reduce the risk of hot water backflow, the cold mist tank and the heating tank of the heating humidifier are designed with a height difference, which effectively limits the water in the heating tank from flowing back into the cold mist tank through the water passage and damaging the atomizing component. However, the water passage of the heating humidifier is in the shape of a pipe and is located in the closed space between the base and the outer shell. It needs to be disassembled for cleaning, which is inconvenient to operate. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model provides a heating humidifier, which can at least solve the technical problem of: how to reduce the risk of hot water backflow and improve the convenience of cleaning the water passage.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a heating humidifier, comprising a base;

[0009] The base is provided with a cold mist groove, a heating groove and a water passage. The cold mist groove is used to load the atomizing element, and the heating groove is used to load the heating element. The groove openings of the cold mist groove and the heating groove are open upwards, and the two ends of the water passage are respectively connected to the cold mist groove and the heating groove, and the top of the water passage is open. The connecting point between the heating groove and the water passage is higher than the groove bottom of the heating groove.

[0010] It is further provided that the end of the aforementioned water passage connected to the cold mist groove is not lower than the end of the water passage connected to the heating groove.

[0011] The heating humidifier is further configured to include an isolation shell, which is detachably arranged at the heating groove of the base and forms a heating chamber with the groove wall of the heating groove. The heating element is arranged in the heating chamber. A water inlet and a hot mist outlet are provided on the isolation shell. The water inlet is connected to the heating chamber and the water passage and is lower than the connection point between the heating groove and the water passage, and the hot mist outlet is connected to the heating chamber.

[0012] The heating humidifier is further configured to include a guide shell, which is arranged above the cold mist groove and the heating groove of the base, and is provided with a hot mist guide channel, a cold mist guide channel and a mist outlet that are interconnected, the hot mist guide channel is opposite to and connected with the hot mist outlet, and the cold mist guide channel is opposite to and connected with the atomizing element.

[0013] It is further configured that the aforementioned hot mist guide channel includes a plurality of tapered holes connected in sequence, the tapered holes and the hot mist outlet are both located directly below the mist outlet, and the diameter of the tapered holes gradually decreases from the hot mist outlet toward the mist outlet.

[0014] Further, the heating humidifier also includes a water tank, which is detachably mounted on the base and is provided with a water outlet, the water outlet is opposite to and connected to the cold mist groove, and the bottom of the cold mist groove is lower than the connecting point between the cold mist groove and the water passage.

[0015] Further, the heating humidifier also includes a water supply switch, which includes a piston, a slide rod and a floating member, the piston is movably arranged at the water outlet and connected to the top of the slide rod, the slide rod is slidably connected to the water outlet of the water tank, and the floating member is rotatably connected to the cold mist groove of the base;

[0016] When the water tank is installed on the base, the water supply switch also includes a water inlet state and a water shutoff state;

[0017] When the water supply switch is in the water inlet state, the floating member contacts the slide rod and drives the slide rod and the piston to move back to the water outlet to open the water outlet;

[0018] When the water supply switch is in the water-off state, the floating member moves away from the slide rod under the action of buoyancy, and the slide rod drives the piston to move toward the water outlet under the action of its own gravity to block the water outlet.

[0019] The heating humidifier is further configured to include a mist outlet pipe, which runs through the water tank. Both ends of the mist outlet pipe are respectively connected to the top and bottom of the water tank, and the mist outlet pipe is also connected to the cold mist tank and the heating tank.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the heating humidifier provided by the utility model has the following beneficial effects:

[0022] 1. The bottom of the heating tank of the heating humidifier provided by the utility model is lower than the connecting point between the heating tank and the water passage. The height difference can limit the hot water in the heating tank from flowing back into the cold mist tank through the water passage, thereby reducing the risk of hot water backflow and effectively preventing the atomizing component in the cold mist tank from being damaged by high temperature.

[0023] 2. Compared with the existing pipe-shaped water passage, the water passage of the heating humidifier provided by the utility model is open at the top, there is no blocking structure in the water passage, and the notches of the cold mist slot and the heating slot of the heating humidifier are also open upward. Therefore, the heating humidifier can be directly flushed and cleaned, and the water passage does not need to be disassembled, which can effectively improve the convenience of cleaning the water passage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional diagram of a heating humidifier in an embodiment;

[0025] Figure 2 A three-dimensional diagram of the base, the heating element and the atomizing element in the embodiment;

[0026] Figure 3 is a cross-sectional view of a heating humidifier in an embodiment;

[0027] Figure 4 for Figure 3 The enlarged schematic diagram of point A in the middle;

[0028] Figure 5 It is a partial cross-sectional view of the water supply switch in the water-off state.

[0029] Figure Number:

[0030] 1. Water tank; 11. Water outlet;

[0031] 2. Base; 21. Cold mist slot; 22. Heating slot; 23. Water passage; 24. Heating chamber;

[0032] 3. Heating element; 4. Atomizing element;

[0033] 5. Isolation shell; 51. Water inlet; 52. Hot mist outlet;

[0034] 6. Guide housing; 61. Hot mist guide channel; 611. Gradually shrinking hole; 62. Cold mist guide channel; 63. Mist outlet;

[0035] 7. Elastic seals;

[0036] 8. Water supply switch; 81. Piston; 82. Sliding rod; 83. Floating member; 831. First part; 832. Second part; 833. Third part;

[0037] 9. Mist outlet pipe. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] The utility model provides a heating humidifier, which is used to solve the problem of how to reduce the risk of hot water backflow and improve the convenience of cleaning a water passage.

[0040] See also Figure 1 and Figure 2 As shown, Figure 1 is a three-dimensional diagram of a heating humidifier in an embodiment, Figure 2 It is a three-dimensional diagram of the base, the heating element and the atomizing element in the embodiment. The heating humidifier includes a base 2.

[0041] The base 2 is provided with a cold mist groove 21, a heating groove 22 and a water passage 23. The cold mist groove 21 is used to load the atomizing element 4, and the atomizing element 4 is used to atomize the liquid in the cold mist groove 21 to form cold mist. The heating groove 22 is used to load the heating element 3, and the heating element 3 is used to evaporate the liquid in the heating groove 22 to form hot mist. The grooves of the cold mist groove 21 and the heating groove 22 are open upward. The two ends of the water passage 23 are respectively connected to the cold mist groove 21 and the heating groove 22, and the top of the water passage 23 is open. The connection point between the heating groove 22 and the water passage 23 is higher than the groove bottom of the heating groove 22.

[0042] When the heating humidifier of the above technical solution is used, the heating element 3 evaporates the liquid in the heating tank 22 to form hot mist, and the atomizing element 4 atomizes the liquid in the cold mist tank 21 to form cold mist. The hot mist and the cold mist are mixed to form mist with a suitable temperature and output to the humidifier to achieve humidification. Since the bottom of the heating tank 22 of the heating humidifier is lower than the connection point between the heating tank 22 and the water passage 23, the height difference can limit the hot water in the heating tank 22 from flowing back into the cold mist tank 21 through the water passage 23, reducing the risk of hot water backflow, and effectively preventing the atomizing element 4 in the cold mist tank 21 from being damaged by high temperature, but does not limit the cold water in the cold mist tank 21 from flowing into the heating tank 22 through the water passage 23 to supply water to the heating tank 22.

[0043] Compared with the existing pipe-shaped water passage, the water passage 23 of the heating humidifier of the above technical solution is open at the top, there is no blocking structure in the water passage 23, and the slots of the cold mist groove 21 and the heating groove 22 are also open upward. Therefore, the heating humidifier can be directly flushed and cleaned, and the water passage 23 does not need to be disassembled, which can effectively improve the convenience of cleaning the water passage 23.

[0044] The above-mentioned heating element 3 can use an existing heating device and be installed on the bottom of the heating tank 22. The above-mentioned atomizing element 4 can use an existing atomizing device such as an atomizing sheet and be installed on the bottom of the cold mist tank 21.

[0045] The connection end of the water passage 23 and the cold mist groove 21 may be at the same height as the connection end of the water passage 23 and the heating groove 22 , or may be higher than the connection end of the water passage 23 and the heating groove 22 .

[0046] In one embodiment of the water passage 23, the end of the water passage 23 connected to the cold mist groove 21 is not lower than the end of the water passage 23 connected to the heating groove 22. In this way, the higher the end of the water passage 23 connected to the cold mist groove 21 is than the end of the water passage 23 connected to the heating groove 22, the more the height difference can limit the hot water in the heating groove 22 from flowing back into the cold mist groove 21 through the water passage 23, and the better the effect of preventing hot water from flowing back.

[0047] See also Figure 3 As shown, Figure 3 : is a cross-sectional view of a heating humidifier in an embodiment, the heating humidifier further comprises an isolation shell 5, which is detachably mounted on the heating groove 22 of the base 2 by plug-in fastening or snap-in, etc., the isolation shell 5 and the groove wall of the heating groove 22 form a heating chamber 24, and the heating element 3 is located in the heating chamber 24. The isolation shell 5 has a water inlet 51 and a hot mist outlet 52, the water inlet 51 is connected to the heating chamber 24 and the water passage 23, and the water inlet 51 is lower than the connection point between the heating groove 22 and the water passage 23, and the hot mist outlet 52 is connected to the heating chamber 24. In this way, the heating tank 22 and the water passage 23 can be separated by the isolation shell 5, so as to prevent the boiling liquid in the heating tank 22 from splashing onto the cold mist tank 21 and the water passage 23, and the water inlet 51 of the isolation shell 5 is lower than the connecting point between the heating tank 22 and the water passage 23, which can further effectively prevent the hot water in the heating tank 22 from flowing back into the cold mist tank 21 through the water inlet 51 and the water passage 23, thereby effectively preventing the atomization element 4 in the cold mist tank 21 from being damaged by high temperature, but does not restrict the cold water in the cold mist tank 21 from flowing into the heating tank 22 through the water passage 23 and the water inlet 51 to supply water to the heating tank 22; and because the isolation shell 5 is detachable, it is convenient to remove it and rinse and clean it separately from the base 2.

[0048] See also Figure 3As shown, the heating humidifier also includes a guide housing 6, which is installed above the cold mist slot 21 and the heating slot 22 of the base 2, and the guide housing 6 has a hot mist guide channel 61, a cold mist guide channel 62 and a mist outlet 63 that are interconnected. The hot mist guide channel 61 is opposite to and connected to the hot mist outlet 52, and the cold mist guide channel 62 is opposite to and connected to the atomizer 4. In this way, the guide housing 6 can guide most of the hot mist output from the hot mist outlet 52 to be directly input into the mist outlet 63 through the hot mist guide channel 61, and at the same time, it can guide most of the cold mist generated by the atomizer 4 to be directly input into the mist outlet 63 through the cold mist guide channel 62, reducing the diffusion of cold and hot mist to the surroundings, thereby effectively reducing the loss of cold and hot mist and increasing the output of cold and hot mist.

[0049] See also Figure 3 As shown, in one embodiment of the hot mist guide channel 61, the hot mist guide channel 61 includes a plurality of tapered holes 611 that are connected in sequence, the tapered holes 611 and the hot mist outlet 52 are both located directly below the mist outlet 63, and the caliber of the tapered holes 611 gradually decreases from the hot mist outlet 52 toward the mist outlet 63. In this way, the hot mist guide channel 61 can guide the hot mist to be gradually output toward the mist outlet 63 through the tapered holes 611, and the tapered holes 611 and the hot mist outlet 52 are both located directly below the mist outlet 63, which can greatly shorten the output path of the hot mist and greatly reduce the heat loss of the mist.

[0050] See also Figure 1 and Figure 3 As shown, the heating humidifier also includes a water tank 12, which can be installed on the base 2 by means of snap connection or tight connection, and the water tank 12 has a water outlet 13, the water outlet 13 is opposite to and connected with the cold mist groove 21, and the bottom of the cold mist groove 21 is lower than the connection between the cold mist groove 21 and the water passage 23. In this way, when the heating humidifier is used, the water tank 12 first supplies water to the cold mist groove 21 through the water outlet 13, the atomizing element 4 atomizes the water in the cold mist groove 21 to produce cold mist, and outputs the cold mist to the mist outlet 63, until the water level in the cold mist groove 21 rises to the connection between the cold mist groove 21 and the water passage 23, the water passage 23 guides the overflowed water in the cold mist groove 21 into the heating groove 22, and then the heating element 3 heats the water in the heating groove 22 to produce hot mist (i.e., water vapor), and outputs the hot mist to the mist outlet 63, and the hot mist and the cold mist are gradually mixed to obtain mist with a suitable temperature. In summary, the heating humidifier first outputs mist with a lower temperature, and then gradually increases the temperature of the output mist to avoid the situation where the hot mist is directly sprayed out without being mixed with the cold mist, causing burns to the user.

[0051] See also Figure 3 , Figure 4 and Figure 5 As shown, Figure 4 for Figure 3 The enlarged schematic diagram of point A in the middle. Figure 5 It is a partial cross-sectional view of the water supply switch in the water-off state. The heating humidifier also includes a water supply switch 8, which includes a piston 81, a slide bar 82 and a floating member 83. The piston 81 is movably installed at the water outlet 13, and the piston 81 is connected to the top of the slide bar 82. The slide bar 82 is slidably connected to the water outlet 13 of the water tank 12 and slides along the water outlet 13. The floating member 83 is rotatably connected to the cold mist groove 21 of the base 2. Among them, when the water tank 12 is installed on the base 2, the water supply switch 8 also includes a water inlet state and a water-off state. When the water supply switch 8 is in the water inlet state, the floating member 83 abuts against the slide bar 82, and drives the slide bar 82 and the piston 81 to move away from the water outlet 13, thereby opening the water outlet 13; when the water supply switch 8 is in the water-blocking state, the floating member 83 moves away from the slide bar 82 under the action of buoyancy, and the slide bar 82 drives the piston 81 to move toward the water outlet 13 under the action of its own gravity, thereby blocking the water outlet 13. In this way, when the water tank 12 is separated from the base 2, the slide bar 82 moves away from the floating member 83, and the water supply switch 8 is in the water-blocking state, automatically blocking the water outlet 13, effectively preventing the water in the water tank 12 from flowing out; when the water tank 12 is installed on the base 2, the floating member 83 abuts against the slide bar 82 under the action of its own gravity, drives the slide bar 82 and the piston 81 to move away from the water outlet 13, switches the water supply switch 8 from the water-blocking state to the water inlet state, and automatically opens the water outlet 13, thereby providing water for the cold mist tank 21 and the adding The hot tank 22 supplies water. When the water in the cold mist tank 21, the water passage 23 and the heating tank 22 is connected, the water outlet 13 continues to supply water, which will increase the buoyancy of the floating part 83. The buoyancy drives the floating part 83 to float and swing upward, away from the slide bar 82, and switches the water supply switch 8 from the water inlet state to the water closed state, automatically and timely blocking the water outlet 13, preventing the heating element 3 from evaporating the water in the cold mist tank 21 and the heating tank 22 at the same time, thereby causing the atomizing element 4 in the cold mist tank 21 to be damaged by high temperature. It can be seen that the heating humidifier can automatically control the switch of the water outlet 13 through the water supply switch 8, thereby controlling the water to flow into the cold mist tank 21 and the heating tank 22, which is convenient for use.

[0052] The water supply switch 8 may use the above-mentioned embodiment, or may use an existing solenoid valve or an existing water supply switch of a humidifier water tank.

[0053] See also Figure 2 and Figure 5As shown, in one embodiment of the floating member 83, the floating member 83 includes a first part 831, a second part 832 and a third part 833 which are connected in sequence, the second part 832 is rotatably connected to the cold mist slot 21 of the base 2, the first part 831 and the third part 833 are respectively located on both sides of the second part 832, and the sum of the weights of the third part 833, the slide bar 82 and the piston 81 is less than the weight of the first part 831. In the water-in state, the first part 831 moves downward under the action of gravity, driving the third part 833 to move upward and abut against the slide bar 82, and the third part 833 links the slide bar 82 and the piston 81 to move away from the water outlet 13; in the water-closed state, the first part 831 overcomes its own gravity and moves upward under the action of buoyancy, driving the third part 833 to move downward away from the slide bar 82. In this way, the floating member 83 can automatically control the switch of the water outlet 13 through the action of gravity and buoyancy, without manual control, and is convenient to use.

[0054] See also Figure 3 As shown, in one embodiment of the housing 1, the heating humidifier further includes a mist outlet pipe 14, the mist outlet pipe 14 penetrates the water tank 12, and the two ends of the mist outlet pipe 14 are respectively connected to the top and the bottom of the water tank 12. In this way, the mist outlet pipe 14 can extend the mixing path of the cold and hot mists, so that the temperature of the mist sprayed by the heating humidifier is more uniform, thereby improving the comfort of the user.

[0055] In this embodiment, the top end of the mist outlet pipe 14 is covered with the water tank 12 cover, and the bottom end of the mist outlet pipe 14 passes through the bottom of the water tank 12 and is engaged with the bottom of the water tank 12. When the water tank 12 is installed on the base 2, the bottom end of the mist outlet pipe 14 abuts against the guide housing 6 and is connected to the mist outlet 63, pressing the guide housing 6 against the base 2, thereby tightly connecting the guide housing 6 and the base 2. The mist output from the mist outlet 63 is further mixed through the mist outlet pipe 14 and then output outside the humidifier.

[0056] In this embodiment, the above-mentioned heating element 3 and atomizing element 4 are both pressed tightly on the base 2 by screws, and elastic sealing elements 7 are installed between the heating element 3 and the base 2, between the atomizing element 4 and the base 2, and between the mist outlet pipe 14 and the bottom of the water tank 12. In this way, the former can prevent hot water from flowing into the closed cavity of the base 2 from between the heating element 3 and the base 2, damaging other electronic components installed in the closed cavity of the base 2, and the latter can prevent water from penetrating into the base 2 from between the mist outlet pipe 14 and the water tank 12, affecting the water supply switch 8 to control the water to flow into the cold mist tank 21 and the heating tank 22.

[0057] The above-mentioned base 2, isolation shell 5, guide shell 6 and other parts that are in contact with the liquid and / or hot mist in the heating tank 22 can be made of heat-resistant materials, so that they can withstand the boiling of the liquid and hot mist in the heating tank 22 for a long time without being easily damaged, thereby improving the service life.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heating humidifier, characterized in that: Including base; The base is provided with a cold mist groove, a heating groove and a water passage. The cold mist groove is used to load an atomizing element, and the heating groove is used to load a heating element. The groove openings of the cold mist groove and the heating groove are open upwards, and the two ends of the water passage are respectively connected to the cold mist groove and the heating groove, and the top of the water passage is open. The connecting point between the heating groove and the water passage is higher than the groove bottom of the heating groove.

2. A heating humidifier according to claim 1, characterized in that: The end of the water passage connected to the cold mist groove is not lower than the end of the water passage connected to the heating groove.

3. A heating humidifier according to claim 1, characterized in that: It also includes an isolation shell, which is detachably arranged at the heating groove of the base and forms a heating chamber with the groove wall of the heating groove. The heating element is arranged in the heating chamber. A water inlet and a hot mist outlet are provided on the isolation shell. The water inlet is connected with the heating chamber and the water passage and is lower than the connection point between the heating groove and the water passage. The hot mist outlet is connected with the heating chamber.

4. A heating humidifier according to claim 3, characterized in that: It also includes a guide shell, which is arranged above the cold mist groove and the heating groove of the base, and is provided with a hot mist guide channel, a cold mist guide channel and a mist outlet that are interconnected, the hot mist guide channel is opposite to and connected with the hot mist outlet position, and the cold mist guide channel is opposite to and connected with the atomizing element position.

5. A heating humidifier according to claim 4, characterized in that: The hot mist guiding channel includes a plurality of tapered holes connected in sequence, the tapered holes and the hot mist outlet are both located directly below the mist outlet, and the diameter of the tapered holes gradually decreases from the hot mist outlet toward the mist outlet.

6. A heating humidifier according to claim 1, characterized in that: It also includes a water tank, which is detachably mounted on the base and is provided with a water outlet. The water outlet is opposite to and connected to the cold mist groove, and the bottom of the cold mist groove is lower than the connecting point between the cold mist groove and the water passage.

7. A heating humidifier according to claim 6, characterized in that: It also includes a water supply switch, which includes a piston, a slide rod and a floating member, wherein the piston is movably arranged at the water outlet and connected to the top end of the slide rod, the slide rod is slidably connected to the water outlet of the water tank, and the floating member is rotatably connected to the cold mist groove of the base; Wherein, when the water tank is installed on the base, the water supply switch also includes a water inlet state and a water shutoff state; When the water supply switch is in the water inlet state, the floating member abuts against the sliding rod, and drives the sliding rod and the piston to move away from the water outlet, thereby opening the water outlet; When the water supply switch is in a water-off state, the floating member moves away from the slide rod under the action of buoyancy, and the slide rod drives the piston to move toward the water outlet under the action of its own gravity to block the water outlet.

8. A heating humidifier according to claim 6, characterized in that: It also includes a mist outlet pipe, which runs through the water tank. Both ends of the mist outlet pipe are respectively connected to the top and bottom of the water tank, and the mist outlet pipe is also connected to the cold mist tank and the heating tank.