Hot steam humidifier

Abstract

The utility model relates to a kind of hot steam humidifiers, it includes: base, box, heating can and top cover, heating piece is equipped in base. Box is installed on base, its top has opening, its bottom is provided with let go of mouth, and opening and let go of mouth are respectively communicated with the inside of box. Heating can is installed in box, and the inner wall between its outer wall and box is enclosed to form water storage cavity, heating can is hollow to form heating cavity, heating cavity is communicated with heating piece by let go of mouth, and heating piece is used to heat the liquid in heating cavity. Top cover is connected with box, to close opening, and top cover is provided with mist outlet hole communicated with heating cavity on it. Wherein, heating cavity and water storage cavity have water passing cavity, the top end of water passing cavity has water passing hole communicated with water storage cavity, and water passing cavity is equipped with ball float for opening or plugging water passing hole, when ball float opens water passing hole, water storage cavity and heating cavity are communicated by water passing cavity, when ball float plugs water passing hole, water storage cavity and heating cavity are not communicated.

Description

Technical Field

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

[0002] A humidifier is a device that increases air humidity through physical or chemical means to alleviate dry environments. Its core function is to convert liquid water into gaseous water particles and evenly diffuse them into the air to increase humidity levels. Existing humidifiers mainly use two methods to vaporize liquid water: room temperature evaporation and heated evaporation. Among these, heated evaporation produces hot mist and has the advantage of higher evaporation efficiency, thus it is widely used.

[0003] Existing humidifiers typically include two chambers: a water storage chamber and a heating chamber. The water storage chamber stores the liquid to be evaporated, while the heating chamber contains a heating element. The liquid in the heating chamber is heated and evaporated by the heating element, then released into the surrounding environment to achieve a humidification effect. A transmission channel connects the water storage chamber and the heating chamber, allowing water from the storage chamber to continuously replenish the heating chamber. However, when the heating element heats the liquid in the heating chamber, heat conduction may occur between the water in the heating chamber and the water in the storage chamber through the transmission channel, thus reducing the humidifier's heating mist efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a hot steam humidifier, and the technical problem it solves is: how to improve the heating mist efficiency of the humidifier.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0006] This utility model provides a hot steam humidifier, comprising: a base with a heating element inside; a housing mounted on the base, having an opening at the top and a clearance opening at the bottom, the opening and the clearance opening respectively communicating with the interior of the housing; and a heating element mounted inside the housing, the outer wall of which encloses the inner wall of the housing to form a water storage cavity, the interior of which is hollow to form a heating chamber, the heating chamber communicating with the heating element through the clearance opening, and the heating element used to heat and evaporate the liquid in the heating chamber. The enclosure includes a body and a top cover connected to the enclosure to close the opening. The top cover has a mist outlet that communicates with the heating chamber. A water passage chamber is located between the heating chamber and the water storage chamber. The top of the water passage chamber has a water passage hole that communicates with the water storage chamber. A float ball is provided inside the water passage chamber to open or close the water passage hole. When the float ball opens the water passage hole, the water storage chamber and the heating chamber communicate through the water passage chamber. When the float ball closes the water passage hole, the water storage chamber and the heating chamber are not connected.

[0007] In some embodiments of this application, the heating chamber includes an inner chamber and an outer chamber nested outside the inner chamber, with a sealed heat-insulating cavity formed between the inner chamber and the outer chamber. The heating cavity is located inside the inner chamber, and the water storage cavity is formed by the outer wall of the outer chamber and the inner wall of the housing.

[0008] In some embodiments of this application, the bottom of the housing is provided with an installation groove, the bottom wall of the installation groove is provided with the clearance opening, the heating element is embedded in the installation groove, and its outer wall is sealed with the side wall of the installation groove.

[0009] In some embodiments of this application, the bottom of the housing is provided with a receiving groove communicating with the mounting groove; the hot steam humidifier further includes a water-passing component, which is disposed in the receiving groove, and its outer wall is respectively sealed with the side wall of the receiving groove and the outer wall of the heating tank. The water-passing component is provided with a water-passing cavity, and the water-passing component is provided with a water-passing hole and a water-inlet hole. The water-passing cavity communicates with the water storage cavity through the water-passing hole and with the heating cavity through the water-inlet hole.

[0010] In some embodiments of this application, the heating chamber is provided with a receiving groove, and the receiving groove is provided with a first through hole and a second through hole respectively; the hot steam humidifier further includes a water passing component, which is disposed in the receiving groove, and the water passing component is provided with a water passing cavity, and the water passing component is provided with a water passing hole and a water inlet hole; the water passing cavity is connected to the water storage cavity in sequence through the water passing hole and the first through hole, and is connected to the heating cavity in sequence through the water inlet hole and the second through hole.

[0011] In some embodiments of this application, the top cover includes an inner cover and an outer cover arranged around the outer periphery of the inner cover. The inner cover is connected to the heating element to close the heating chamber, and the inner cover has the mist outlet. The outer cover overlaps the inner cover and is connected to the housing to close the water storage chamber.

[0012] In some embodiments of this application, the heating element is provided with an annular retaining strip arranged around its outer periphery; the inner cover includes a top piece and a first connecting piece, a second connecting piece, and a third connecting piece in an annular structure. The top piece is connected to the first connecting piece and is located above the first connecting piece. The second connecting piece is coaxially arranged with the first connecting piece and is located below the first connecting piece. The size of the second connecting piece is larger than that of the first connecting piece. The third connecting piece is used to connect the first connecting piece and the second connecting piece. The second connecting piece is provided with a retaining protrusion extending into the inner cover. The bottom surface of the third connecting piece is supported on the top of the heating element. The second connecting piece is sleeved on the outside of the heating element. The retaining protrusion and the retaining strip form a limiting fit to restrict the second connecting piece from detaching upward from the heating element. The outer cover overlaps the top surface of the third connecting piece.

[0013] In some embodiments of this application, the outer cover includes a top plate and an annular plate connected together. The lower end of the annular plate is provided with a plurality of extension pieces arranged at intervals along its circumference. When the outer cover is connected to the box body, the end face of the lower end of the annular plate is supported on the top of the box body, and the extension pieces are located inside the box body and fit against the inner wall of the box body.

[0014] In some embodiments of this application, the heating cavity includes a first part and a second part arranged sequentially from top to bottom, and the cross-sectional width of the first part is greater than the cross-sectional width of the second part.

[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:

[0016] In the hot steam humidifier of this utility model embodiment, the base, the housing, and the top cover together constitute the basic framework of the hot steam humidifier, realizing the core closed loop of water storage and steam release. When the heating element in the base continuously heats the water in the heating chamber of the heating element to boiling, it can generate high-temperature steam. The steam diffuses into the air through the mist outlet of the top cover to increase the ambient humidity. Thus, through the coordinated cooperation of the base, housing, top cover, heating element, and heating element, the humidification function of the hot steam humidifier can be realized.

[0017] Specifically, the water storage chamber stores cold water. When the water level in the heating chamber is low, the float in the water passage chamber descends to open the water passage hole at the top of the water passage chamber. Cold water from the storage chamber enters the water passage chamber through the water passage hole and flows through the gap between the float and the inner wall of the water passage chamber into the heating chamber, thus replenishing the heating chamber and establishing an automatic water replenishment mechanism. When the water level in the heating chamber is high, the float rises to block the water passage hole at the top of the water passage chamber. At this time, the water in the storage chamber is isolated from the water passage chamber, completely isolating the storage chamber from the heating chamber. This prevents heat from the heating chamber from being conducted to the storage chamber through the water, reducing heat loss. Therefore, this hot steam humidifier can, on the one hand, reduce heat waste caused by continuous dry burning when the heating chamber is short of water through the automatic water replenishment mechanism; on the other hand, it can reduce heat transfer between the heating chamber and the storage chamber when the heating chamber has sufficient water, so that the heat generated by the heating element can be effectively used to generate high-temperature steam, thereby improving the heating mist production efficiency of the hot steam humidifier. Attached Figure Description

[0018] 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 illustrations 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:

[0019] Figure 1 This is a schematic diagram of a thermal humidifier according to an exemplary embodiment.

[0020] Figure 2 yes Figure 1 A cross-sectional view in one specific embodiment.

[0021] Figure 3 yes Figure 2 A cross-sectional view in another state.

[0022] Figure 4 yes Figure 1 A cross-sectional view in another specific embodiment.

[0023] Figure 5 yes Figure 4 A cross-sectional view in another state.

[0024] The annotations in the attached figures are explained as follows:

[0025] 1. Base;

[0026] 2. Heating element;

[0027] 3. Housing; 31. Opening; 32. Mounting slot; 321. Clearance opening; 33. Receiving slot; 34. Insert post; 35. Positioning ring;

[0028] 4. Heating chamber; 41. Inner chamber; 411. Heating cavity; 4111. First part; 4112. Second part; 412. Receiving groove; 4121. First through hole; 4122. Second through hole; 42. Outer chamber; 43. Water storage cavity; 44. Insulation cavity; 45. Annular retaining strip;

[0029] 5. Top cover; 51. Inner cover; 511. Top plate; 5111. Mist outlet; 512. First connecting piece; 513. Second connecting piece; 5131. Clip; 514. Third connecting piece; 52. Outer cover; 521. Top plate; 5211. Collection groove; 5212. Collection hole; 522. Annular plate; 523. Extension piece;

[0030] 6. Float;

[0031] 7. Water passage component; 71. Water passage cavity; 72. Water passage hole; 73. Water inlet hole;

[0032] 8. Heating element mounting base; 81. First mounting base; 811. Positioning groove; 82. Second mounting base; 821. Insertion hole;

[0033] 9. Sealing ring. Detailed Implementation

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Please see Figures 1 to 5The hot steam humidifier provided in one embodiment of this utility model mainly includes a base 1, a housing 3, a heating element 4, and a top cover 5. A heating element 2 is provided inside the base 1. The housing 3 is mounted on the base 1, with an opening 31 at its top and a clearance opening 321 at its bottom, both communicating with the interior of the housing 3. The heating element 4 is installed inside the housing 3, its outer wall and the inner wall of the housing 3 forming a water storage cavity 43. The interior of the heating element 4 is hollow, forming a heating chamber 411. The heating chamber 411 communicates with the heating element 2 through the clearance opening 321, and the heating element 2 is used to heat and evaporate the liquid inside the heating chamber 411. The top cover 5 is connected to the housing 3 to close the opening 31, and a mist outlet 5111 communicating with the heating chamber 411 is provided on the top cover 5. The heating chamber 411 and the water storage chamber 43 are connected by a water passage chamber 71. The top of the water passage chamber 71 is connected to the water storage chamber 43 by a water passage hole 72. The water passage chamber 71 is equipped with a float ball 6 for opening or blocking the water passage hole 72. When the float ball 6 opens the water passage hole 72, the water storage chamber 43 and the heating chamber 411 are connected through the water passage chamber 71. When the float ball 6 blocks the water passage hole 72, the water storage chamber 43 and the heating chamber 411 are not connected.

[0038] In the hot steam humidifier of this utility model embodiment, the base 1, the housing 3, and the top cover 5 together constitute the basic framework of the hot steam humidifier, realizing the core closed loop of water storage and steam release. When the heating element 2 in the base 1 continuously heats the water in the heating chamber 411 of the heating tank 4 to boiling, it can generate high-temperature steam. The steam diffuses into the air through the mist outlet 5111 of the top cover 5 to increase the ambient humidity. Thus, through the coordinated cooperation of the base 1, housing 3, top cover 5, heating element 2, and heating tank 4, the humidification function of the hot steam humidifier can be realized.

[0039] Specifically, the water storage chamber 43 is used to store cold water. When the water level in the heating chamber 411 is low, the float 6 in the water passage chamber 71 descends to open the water passage hole 72 located at the top of the water passage chamber 71. The cold water in the water storage chamber 43 enters the water passage chamber 71 through the water passage hole 72, flows through the gap between the float 6 and the inner wall of the water passage chamber 71, and enters the heating chamber 411 to replenish the heating chamber 411, thereby establishing an automatic water replenishment mechanism. When the water level in the heating chamber 411 is high, the float 6 rises to block the water passage hole 72 located at the top of the water passage chamber 71. At this time, the water in the water storage chamber 43 is isolated from the water passage chamber 71, so that the water storage chamber 43 and the heating chamber 411 are completely isolated, which can prevent the heat in the heating chamber 411 from being conducted to the water storage chamber 43 through the water, thereby reducing heat loss. Therefore, this hot steam humidifier can reduce the heat waste caused by continuous dry burning when the heating chamber 411 is short of water through an automatic water replenishment mechanism. On the other hand, it can also reduce the heat transfer between the heating chamber 411 and the water storage chamber 43 when the heating chamber 411 has sufficient water, so that the heat generated by the heating element 2 can be effectively used to generate high-temperature steam, thereby improving the heating mist efficiency of the hot steam humidifier.

[0040] It should be noted that when the water storage chamber 43 replenishes the heating chamber 411 with water, the water flows from the water storage chamber 43 through the water passage chamber 71 to the heating chamber 411, resulting in less heat loss.

[0041] Please see Figures 2 to 4 In a specific embodiment, the heating element 4 includes an inner liner 41 and an outer liner 42 nested outside the inner liner 41. A sealed heat-insulating cavity 44 is formed between the inner liner 41 and the outer liner 42. The inner liner 41 contains a heating cavity 411, and the outer wall of the outer liner 42 and the inner wall of the housing 3 enclose a water storage cavity 43. The sealed heat-insulating cavity 44 between the inner liner 41 and the outer liner 42 reduces the possibility of heat transfer from the heating cavity 411 to the water storage cavity 43 through the heating element 4 body, allowing the heat energy provided by the heating element 2 to be concentrated for the evaporation of water in the heating cavity 411, thereby further improving the heating mist production efficiency of the thermal humidifier.

[0042] In a specific embodiment, the bottom of the housing 3 is provided with a mounting groove 32, and the bottom wall of the mounting groove 32 has a clearance opening 321. The heating element 4 is embedded in the mounting groove 32, and its outer wall is sealed to the side wall of the mounting groove 32 by a sealing ring 9. The rapid alignment of the heating element 4 with the mounting groove 32 facilitates the quick and stable installation of the heating element 4 inside the housing 3. The interlocking structure enhances the overall structure's vibration resistance and prevents the heating element 4 from shifting position within the housing 3, thereby improving the overall stability and reliability of the thermal humidifier. The seal between the outer wall of the heating element 4 and the side wall of the mounting groove 32 prevents direct communication between the water storage chamber 43 and the heating chamber 411, thus avoiding unnecessary heat loss.

[0043] Please see Figure 2 and Figure 3 In one embodiment where a water passage cavity 71 is provided between the heating chamber 411 and the water storage chamber 43, the bottom of the housing 3 is provided with a receiving groove 33 communicating with the mounting groove 32. The hot steam humidifier also includes a water passage component 7, which is disposed in the receiving groove 33, and its outer wall is sealed to the side wall of the receiving groove 33 and the outer wall of the heating tank 4 by means of a sealing ring 9, etc. The water passage component 7 is provided with a water passage cavity 71, and the water passage component 7 has a water passage hole 72 and a water inlet hole 73. The water passage cavity 71 communicates with the water storage chamber 43 through the water passage hole 72 and with the heating chamber 411 through the water inlet hole 73. The water passage component 7 can be detached separately from the receiving groove 33 at the bottom of the housing 3, which has the advantage of convenient disassembly and assembly.

[0044] Please see Figure 4 and Figure 5In another embodiment where a water passage cavity 71 is provided between the heating chamber 411 and the water storage chamber 43, a receiving groove 412 is provided inside the heating tank 4, and the receiving groove 412 is provided with a first through hole 4121 and a second through hole 4122. The hot steam humidifier also includes a water passage component 7, which is disposed in the receiving groove 412 and has a water passage cavity 71. The water passage component 7 has a water passage hole 72 and a water inlet hole 73. The water passage cavity 71 communicates with the water storage chamber 43 through the water passage hole 72 and the first through hole 4121, and communicates with the heating chamber 411 through the water inlet hole 73 and the second through hole 4122. Integrating the water passage component 7 into the heating tank 4 can effectively save space at the bottom of the housing 3 and improve the compactness of the overall structure.

[0045] In the two embodiments described above, the water passage component 7 provides a water passage cavity 71 with a stable structure for the float 6, thereby reducing external interference on the rise and fall of the float 6 within the water passage cavity 71. Furthermore, the water passage component 7 can be replaced separately, reducing maintenance costs.

[0046] In other embodiments, the accommodating groove 412 may be opened inside the heating tank 4 or at the bottom of the box 3. The accommodating groove 412 has a water passage hole 72 and a water inlet hole 73. The float ball 6 is located inside the accommodating groove 412. When the float ball 6 opens the water passage hole 72, the water storage chamber 43 communicates with the heating chamber 411 in sequence through the water passage hole 72 and the water inlet hole 73.

[0047] Please see Figures 2 to 4 In a specific embodiment, the top cover 5 includes an inner cover 51 and an outer cover 52 arranged around the outer periphery of the inner cover 51. The inner cover 51 is connected to the heating tank 4 to close the heating chamber 411, and the inner cover 51 has a mist outlet 5111. The outer cover 52 overlaps the inner cover 51 and is connected to the housing 3 to close the water storage chamber 43.

[0048] The top cover 5 adopts a split design. Specifically, the water storage chamber 43 can be opened by disconnecting the outer cover 52 from the box body 3 to perform operations such as adding cold water, without having to remove the inner cover 51 which is hot. This makes the operation quicker and safer.

[0049] Please see Figure 2 and Figure 3In a specific embodiment, the heating element 4 is provided with an annular retaining strip 45 arranged around its outer periphery. The inner cover 51 includes a top piece 511 and a first connecting piece 512, a second connecting piece 513, and a third connecting piece 514 in an annular structure. The top piece 511 is connected to the first connecting piece 512 and is located above the first connecting piece 512. The second connecting piece 513 is coaxially arranged with the first connecting piece 512 and is located below the first connecting piece 512. The size of the second connecting piece 513 is larger than the size of the first connecting piece 512. The third connecting piece 514 is used to connect the first connecting piece 512 and the second connecting piece 513. The second connecting piece 513 is provided with a retaining protrusion 5131 extending into the inner cover 51. The bottom surface of the third connecting piece 514 is supported on the top of the heating element 4. The second connecting piece 513 is sleeved on the outside of the heating element 4, and the locking protrusion 5131 and the locking strip form a limiting fit to restrict the second connecting piece 513 from coming out of the heating element 4. The outer cover 52 is attached to the top surface of the third connecting piece 514.

[0050] This provides a practical implementation method for the coordinated cooperation between the inner cover 51, the heating element 4, and the outer cover 52. Furthermore, the locking protrusion 5131 and the locking strip structure can prevent the inner cover 51 from dislodging under steam pressure, thereby improving the safety of the hot steam humidifier.

[0051] In a specific embodiment, the outer cover 52 includes a top plate 521 and an annular plate 522 connected to each other. The lower end of the annular plate 522 is provided with a plurality of extension pieces 523 arranged at intervals along its circumference. When the outer cover 52 is connected to the box body 3, the end face of the lower end of the annular plate 522 is supported on the top of the box body 3. The extension pieces 523 are located inside the box body 3 and fit against the inner wall of the box body 3. The extension pieces 523 are used to guide the outer cover 52 and the box body 3 to be aligned and installed in the vertical direction. The inner wall of the box body 3 and the extension pieces 523 can form a limiting fit for the outer cover 52 to be horizontally offset and disengaged from the box body 3.

[0052] It should be noted that the extension piece 523 can be fitted to the inner wall of the housing 3 with an interference fit, or the extension piece 523 can be elastic and elastically fitted to the inner wall of the housing 3.

[0053] In this embodiment, the top plate 521 is attached to the top surface of the third connecting piece 514.

[0054] Please see Figures 1 to 5 In a further embodiment, the top plate 521 is provided with a recessed collection groove 5211, and the top plate 521 is provided with collection holes 5212 that are respectively connected to the collection groove 5211 and the water storage cavity 43, so as to collect the steam condensate and gather it into the water storage cavity 43 to complete the water recycling.

[0055] Please see Figures 2 to 4In a specific embodiment, the heating chamber 411 includes a first part 4111 and a second part 4112 arranged sequentially from top to bottom, with the cross-sectional width of the first part 4111 being greater than that of the second part 4112. Water is heated and evaporated in the second part 4112 by the heating element 2, rises along the first part 4111, and is sprayed out from the mist outlet 5111. During this process, the design of the cross-sectional widths of the first part 4111 and the second part 4112 ensures that the total amount of heated water in the second part 4112 is relatively small, thus shortening the heating time. The enlarged shape of the first part 4111 buffers gas-liquid separation, enhances the stability of steam injection, thereby improving the safety of the thermal humidifier and further increasing its thermal mist generation efficiency.

[0056] Please see Figure 4 In the above embodiments, the base 1 is provided with a heating element mounting seat 8, which includes a first mounting seat 81 and a second mounting seat 82 arranged vertically. The heating element 2 is sandwiched between the first mounting seat 81 and the second mounting seat 82. The first mounting seat 81 has an annular positioning groove 811, and the second mounting seat 82 has a plurality of insertion holes 821 arranged around the outer periphery of the positioning groove 811. The bottom of the housing 3 is provided with downwardly extending insertion posts 34 and positioning rings 35. The plurality of insertion posts 34 are arranged at intervals around the outer periphery of the positioning rings 35. The insertion posts 34 are used to form a plug-in engagement with the insertion holes 821 on the second mounting seat 82, and the positioning rings 35 are used to be engaged in the positioning grooves 811 on the first mounting seat 81. The bottom of the heating element 4 is supported on the bottom wall of the mounting groove 32. Thus, the connection and engagement between the base 1, the heating element 2, the housing 3, and the heating element 4 are completed, which has the advantages of quick positioning and tight connection.

[0057] 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 hot steam humidifier, characterized in that, include: The base contains a heating element. The housing is mounted on the base, with an opening at the top and a clearance opening at the bottom, and the opening and the clearance opening are respectively connected to the interior of the housing; A heating element is installed inside the box, and its outer wall and the inner wall of the box form a water storage cavity. The heating element is hollow inside to form a heating cavity. The heating cavity is connected to the heating element through the relief opening, and the heating element is used to heat and evaporate the liquid in the heating cavity. The top cover is connected to the housing to close the opening, and the top cover has a mist outlet that communicates with the heating chamber; The heating chamber and the water storage chamber are connected by a water passage chamber. The top of the water passage chamber has a water passage hole that connects to the water storage chamber. The water passage chamber is equipped with a float ball for opening or blocking the water passage hole. When the float ball opens the water passage hole, the water storage chamber and the heating chamber are connected through the water passage chamber. When the float ball blocks the water passage hole, the water storage chamber and the heating chamber are not connected.

2. The thermal humidifier according to claim 1, characterized in that, The heating chamber includes an inner chamber and an outer chamber nested outside the inner chamber. A sealed heat-insulating cavity is formed between the inner chamber and the outer chamber. The heating cavity is located inside the inner chamber. The water storage cavity is formed by the outer wall of the outer chamber and the inner wall of the box body.

3. The thermal humidifier according to claim 1, characterized in that, The bottom of the housing is provided with an installation groove, and the bottom wall of the installation groove is provided with a clearance opening. The heating element is embedded in the installation groove, and its outer wall is sealed with the side wall of the installation groove.

4. The thermal humidifier according to claim 3, characterized in that, The bottom of the housing is provided with a receiving groove that communicates with the mounting groove; The hot steam humidifier also includes a water-passing component, which is disposed in the receiving tank and its outer wall is sealed to the side wall of the receiving tank and the outer wall of the heating tank. The water-passing component is provided with a water-passing cavity, and the water-passing component is provided with a water-passing hole and a water-inlet hole. The water-passing cavity is connected to the water storage cavity through the water-passing hole and to the heating cavity through the water-inlet hole.

5. The thermal humidifier according to claim 3, characterized in that, The heating element is provided with a receiving groove, and the receiving groove is provided with a first through hole and a second through hole respectively; The hot steam humidifier also includes a water-passing component, which is disposed in the receiving groove. The water-passing component has a water-passing cavity inside and a water-passing hole and a water inlet hole are provided on the water-passing component. The water passage cavity is connected to the water storage cavity through the water passage hole and the first through hole in sequence, and is connected to the heating cavity through the water inlet hole and the second through hole in sequence.

6. The thermal humidifier according to claim 1, characterized in that, The top cover includes an inner cover and an outer cover arranged around the outer periphery of the inner cover. The inner cover is connected to the heating tank to seal the heating cavity, and the inner cover has the mist outlet. The outer cover overlaps the inner cover and is connected to the housing to seal the water storage cavity.

7. The thermal humidifier according to claim 6, characterized in that, The heating element is provided with an annular retaining strip arranged around its outer periphery; The inner cover includes a top piece and a first connecting piece, a second connecting piece, and a third connecting piece in an annular structure. The top piece is connected to the first connecting piece and is located above the first connecting piece. The second connecting piece is coaxially arranged with the first connecting piece and is located below the first connecting piece. The size of the second connecting piece is larger than that of the first connecting piece. The third connecting piece is used to connect the first connecting piece and the second connecting piece. The second connecting piece is provided with a protrusion extending into the inner cover. The bottom surface of the third connecting piece is supported on the top of the heating element, the second connecting piece is sleeved on the outside of the heating element, and the latch and the latch strip form a limiting fit to restrict the second connecting piece from coming out of the heating element. The outer cover overlaps the top surface of the third connecting piece.

8. The thermal humidifier according to claim 6, characterized in that, The outer cover includes a top plate and an annular plate connected together. The lower end of the annular plate is provided with a plurality of extension pieces arranged at intervals along its circumference. When the outer cover is connected to the box body, the end face of the lower end of the annular plate is supported on the top of the box body, and the extension pieces are located inside the box body and fit against the inner wall of the box body.

9. The thermal humidifier according to claim 1, characterized in that, The heating chamber includes a first part and a second part arranged sequentially from top to bottom, and the cross-sectional width of the first part is greater than the cross-sectional width of the second part.

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