Humidifier

Abstract

The utility model discloses a humidifier which comprises a shell and an inner container, the inner container is assembled in the shell, an inner cavity of the inner container comprises a heating cavity used for storing and heating liquid, and an interlayer cavity used for heat insulation is limited between the inner container and the shell. And at least part of the interlayer cavity surrounds the peripheral side of the heating cavity. According to the humidifier, the situation that the temperature of the outer wall is too high is avoided, so that the situation that a user is scalded in the using process is avoided, and the using safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and particularly to a humidifier. Background Art

[0002] A hot mist humidifier is a small household appliance device that heats water through a heating element to generate water mist. However, during actual use, the heat generated by the heating element will be conducted to the outer wall of the water tank of the humidifier, posing a risk of scalding during use and reducing the safety of using the humidifier. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related art to a certain extent.

[0004] To this end, an embodiment of the utility model provides a humidifier, which avoids the situation of too high outer wall temperature, thus avoiding the situation of being scalded during use and improving the safety of use.

[0005] The humidifier according to the embodiment of the utility model includes:

[0006] A housing and an inner container, the inner container is assembled in the housing, the inner cavity of the inner container includes a heating cavity for storing and heating a liquid, a sandwich cavity for heat insulation is defined between the inner container and the housing, and at least part of the sandwich cavity surrounds the outer peripheral side of the heating cavity.

[0007] Advantageous Effects: The humidifier according to the embodiment of the utility model avoids the situation of too high outer wall temperature, thus avoiding the situation of being scalded during use and improving the safety of use.

[0008] In some embodiments, a pipe body and a heating element are further included. The pipe body is arranged in the inner container, the inner cavity of the pipe body and the inner cavity of the inner container form the heating cavity, a liquid storage cavity for storing the liquid is defined between the pipe body and the inner container, the heating cavity and the liquid storage cavity are communicated so that the liquid can enter the pipe body, at least part of the heating element is arranged in the pipe body, and the heating element is used to heat the liquid in the pipe body into a gas.

[0009] Advantageous Effects: The liquid storage cavity can be separated between the heating cavity and the sandwich cavity, and the heat generated in the heating cavity can be dissipated at the liquid storage cavity, so as to reduce the heat conduction to the sandwich cavity and further reduce the temperature of the housing. In some embodiments, the heating element and the pipe body are not in contact.

[0010] Beneficial effects: The situation where heat is directly conducted from the tube body to the housing is avoided, and the problem of overheating of the housing is further avoided. Secondly, since there is liquid filling between the heating element and the tube body due to the spaced arrangement, the contact area between the liquid and the heating element can be increased, improving the effective utilization rate of heat, and thus the effect of reducing energy consumption loss can be achieved.

[0011] In some embodiments, the inner container includes a bottom wall, the bottom wall is provided with a first hole, the tube body is connected to the bottom wall and surrounds the outer peripheral side of the first hole, and the heating element passes through the first hole and extends into the tube body.

[0012] Beneficial effects: The heating element can pass through the first hole from below the bottom wall and extend into the tube body, thus improving the convenience of assembly.

[0013] In some embodiments, the housing includes a partition plate, the partition plate is arranged in the housing and divides the inner cavity of the housing into a first cavity and a second cavity, the tube body and the inner container are both arranged in the first cavity, and the second cavity is used for arranging electric control components.

[0014] Beneficial effects: The internal space of the housing is partitioned, thus respectively meeting the usage requirements of storing liquid and placing electric control components, and achieving electrical protection isolation.

[0015] In some embodiments, the partition plate and the bottom wall are spaced apart to form a spaced space, and the spaced space forms part of the sandwich cavity.

[0016] Beneficial effects: The bottom of the inner container is not in contact with the housing, thereby avoiding the situation where heat is conducted from the bottom wall to the partition plate, and further restricting the situation of overheating of the housing.

[0017] In some embodiments, at least one of the partition plate and the bottom wall is provided with a support portion, and the support portion is located in the spaced space and propped between the partition plate and the bottom wall.

[0018] Beneficial effects: The support portion can play a role in propping between the bottom wall and the partition plate, thus facilitating the formation of the above-mentioned spaced space.

[0019] In some embodiments, it includes a sealing ring. The partition plate is provided with a second hole, the second hole is arranged opposite to the first hole and is used for the heating element to pass through. The sealing ring is arranged in the spaced space and sleeved on the outer peripheral side of the heating element, and the sealing ring is in abutting contact with the heating element.

[0020] Beneficial effects: The sealing ring can seal the intersection of the heating element, the bottom wall, and the partition, thereby preventing the liquid in the tube from leaking through the gap at the intersection of the three, ensuring the sealing of the inner cavity of the tube, and improving the electrical protection and the safety of use.

[0021] In some embodiments, the partition is provided with an annular portion, the annular portion is located in the spacer space and surrounds the outer peripheral side of the heating element, the inner peripheral side of the sealing ring is in abutting contact with the heating element, and the outer peripheral side of the sealing ring is in abutting contact with the annular portion.

[0022] Beneficial effects: The annular portion can stop and limit the outer side of the sealing ring, so as to ensure that the inner peripheral side of the sealing ring can be fully attached to the heating element, and further ensure the sealing effect.

[0023] In some embodiments, the heating element is connected to the partition and the bottom wall through fasteners. The partition is provided with a protruding portion, the protruding portion protrudes in a direction away from the bottom wall and forms a groove on the side of the partition facing the bottom wall. The bottom wall is provided with a column, and the column is inserted and fitted into the groove. The fastener passes through the heating element and the protruding portion and is connected to the column.

[0024] Beneficial effects: The connection and fixation of the heating element, the housing, and the inner tank are realized, and the overall assembly efficiency and assembly accuracy are also improved. In some embodiments, one of the bottom wall and the tube is provided with a card slot, and the other is provided with a buckle, and the buckle is snap-fitted with the card slot to connect the tube and the bottom wall. Beneficial effects: Thus, the connection and fixation of the tube and the bottom wall are facilitated. In some embodiments, the end of the tube adjacent to the heating element is provided with a plurality of slots, and the plurality of slots are arranged at intervals along the circumferential direction of the tube, and the slots are used for the liquid to flow into the tube.

[0025] Beneficial effects: The communication between the heating chamber and the liquid storage chamber is realized, so as to meet the use requirement of supplying liquid into the tube.

[0026] In some embodiments, it includes a cover body, the cover body is arranged on the top of the housing and is inserted and fitted with the tube, and the cover body is provided with a vent hole, and the vent hole is communicated with the inner cavity of the tube so that the gas generated in the tube is discharged through the vent hole.

[0027] Beneficial effects: The cover body can seal and block the top of the heater, and can also connect the tube and the housing into one body, thereby ensuring the overall structural stability.

[0028] In some embodiments, it includes a base, the base is arranged at the bottom of the housing and is used to seal the bottom side of the housing.

[0029] Beneficial effects: The base can seal and block the bottom of the heater, thus playing a protective role and facilitating the subsequent maintenance and repair of the electronic control components in the second cavity.

[0030] In some embodiments, a first clamping portion extending along the circumferential direction of the housing is provided on the inner circumferential side of the housing, and a second clamping portion extending along the circumferential direction of the inner container is provided on the outer circumferential side of the inner container. The first clamping portion and the second clamping portion are clamped and matched to seal the sandwich cavity.

[0031] Beneficial effects: On the one hand, it can enhance the assembly accuracy of the housing and the inner container and also enhance the limiting and constraining effect. On the other hand, it can seal the connection between the top sides of the inner container and the housing, thus ensuring the overall tightness of the sandwich cavity and further facilitating the improvement of the heat insulation effect. Description of the Drawings

[0032] Figure 1 is a partial structural perspective view of the humidifier according to an embodiment of the present invention.

[0033] Figure 2 is an exploded view of the housing and the inner container of the humidifier according to an embodiment of the present invention.

[0034] Figure 3 is an exploded view of the overall structure of the humidifier according to an embodiment of the present invention.

[0035] Figure 4 is a longitudinal sectional view and a partially enlarged view of the humidifier according to an embodiment of the present invention.

[0036] Figure 5 is a view of the partition and the protruding portion of the housing of the humidifier according to an embodiment of the present invention.

[0037] Reference Signs:

[0038] 1 - Housing; 11 - First cavity; 12 - Second cavity; 13 - Partition; 131 - Annular portion; 132 - Protruding portion; 14 - First clamping portion;

[0039] 2 - Inner container; 21 - Bottom wall; 211 - Support portion; 212 - Card slot; 213 - Cylinder; 22 - Liquid storage cavity; 23 - Second clamping portion;

[0040] 3 - Sandwich cavity;

[0041] 4 - Pipe body; 41 - Slotted opening; 42 - Buckle; 43 - Heating cavity;

[0042] 5 - Heating element;

[0043] 6 - Sealing ring;

[0044] 7 - Cover; 71 - Air vent;

[0045] 8 - Base;

[0046] 9 - Spacing;

[0047] 10 - Fastener. Detailed implementation

[0048] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0049] As Figure 1 and Figure 2 shown, the humidifier of the embodiment of the present utility model includes a housing 1 and an inner container 2.

[0050] The inner container 2 is assembled inside the housing 1. The inner cavity of the inner container includes a heating cavity 43 for storing and heating a liquid. A sandwich cavity 3 for heat insulation is defined between the inner container 2 and the housing 1. For example, as Figure 1 and Figure 2 shown, both the housing 1 and the inner container 2 can generally be cylindrical. The top of the housing 1 can be open. The outer diameter of the inner container 2 is smaller than the inner diameter of the housing 1, so that the inner container 2 can be inserted and assembled into the housing 1 from the open top of the housing 1.

[0051] It should be noted that an independent area can be separated from the inner cavity of the inner container 2 by corresponding structural members. This independent area is the heating cavity 43. During use, a liquid such as water can be heated in the heating cavity 43, thus meeting the use requirement of heating and atomizing the liquid.

[0052] After the housing 1 and the inner container 2 are assembled, as Figure 1 shown, the outer peripheral wall of the inner container 2 and the inner peripheral wall of the housing 1 can be spaced apart, so that a sandwich cavity 3 is formed between the housing 1 and the inner container 2. During use, a liquid such as water can be poured into the inner container 2. When the liquid is heated, since the sandwich cavity 3 is a hollow cavity, heat insulation can be achieved, avoiding the situation that heat is transferred to the shell wall of the housing 1 and causing the shell wall temperature to be too high, and further avoiding the situation of scalding the human body.

[0053] For the humidifier of the embodiment of the present utility model, a sandwich cavity 3 is preset between the housing 1 and the inner container 2. Through the sandwich cavity 3, heat insulation protection can be achieved, avoiding the situation that the temperature of the housing 1 is too high and scalding the human body, and improving the overall safety protection.

[0054] In some embodiments, as Figure 3As shown in the figure, the humidifier further includes a tube body 4 and a heating body 5. The tube body 4 is disposed inside the inner container 2. The inner cavity of the tube body 4 forms a heating cavity 43, and the space between the tube body 4 and the inner container 2 defines a liquid storage cavity 22 for storing liquid. That is, the liquid storage cavity 22 entirely surrounds the outer peripheral side of the heating cavity 43. The liquid storage cavity 22 and the heating cavity 43 are communicated so that the liquid can enter the tube body 4. At least a part of the heating body 5 is disposed inside the tube body 4, and the heating body 5 is used to heat the liquid in the heating cavity 43 into gas.

[0055] For example, as Figure 3 shown, the tube body 4 can generally be a cylindrical structure and extend along the up and down direction. As Figure 4 shown, after the inner container 2 is assembled in the housing 1, the tube body 4 can be assembled inside the inner container 2, and the tube body 4, the inner container 2, and the housing 1 can generally be coaxially arranged. The tube body 4 can be provided with structures such as through holes. Through the through holes, the inner cavity of the tube body 4 and the inner cavity of the inner container 2 can be communicated, thus meeting the use requirement that the liquid in the inner container 2 can flow into the tube body 4 by itself.

[0056] As Figure 3 shown, the heating body 5 can generally be a semi-spherical structure. The heating body 5 can be disposed below the inner container 2 and the tube body 4, and a part of the heating body 5 can pass through the inner container 2 and extend into the tube body 4. Specifically, the heating body 5 can be an electric heater, a PTC heater, etc. During use, the heating body 5 can generate heat by itself, thereby heating the liquid in the tube body 4 into gas. The generated gas can flow out from the top of the tube body 4, thus playing a role in humidifying the environment.

[0057] In some embodiments, the heating body 5 and the tube body 4 are non-contact. For example, as Figure 4 shown, the radial dimension of the heating body 5 is smaller than the inner diameter of the tube body 4. After the heating body 5 is inserted into the tube body 4, the outer surface of the heating body 5 and the inner peripheral wall of the tube body 4 are spaced apart. Since it can avoid the situation that when the heating body 5 contacts the tube body 4, the heat will be directly transmitted to the tube body 4, it reduces the influence of heat on the tube body 4, and also avoids the situation that the heat is conducted to the housing 1 through the tube body 4, further avoiding the problem of excessive temperature of the housing 1.

[0058] Secondly, since there is liquid between the heating body 5 and the tube body 4 due to the spaced arrangement, the contact area between the liquid and the heating body 5 can be increased, improving the effective utilization rate of heat, and thus achieving the effect of reducing energy consumption loss.

[0059] In some embodiments, the inner container 2 includes a bottom wall 21. The bottom wall 21 is provided with a first hole. The tube body 4 is connected to the bottom wall 21 and surrounds the outer peripheral side of the first hole. The heating body 5 passes through the first hole and extends into the tube body 4.

[0060] For example, as Figure 4As shown, the inner container 2 can generally be in a cylindrical structure. The bottom wall 21 can be located at the bottom side of the inner container 2. The first hole can be a circular hole and can be provided at the center position of the bottom wall 21. The radial dimension of the bottom of the tube body 4 is larger than the radial dimension of the first hole. During installation, the bottom of the tube body 4 can be connected to the bottom wall 21, and the rim of the bottom of the tube body 4 can surround the outer peripheral side of the first hole. When assembling the heating element 5, the heating element 5 can pass through the first hole from below the bottom wall 21 and extend into the tube body 4, thereby improving the convenience of assembly.

[0061] In some embodiments, the housing 1 includes a partition 13. The partition 13 is provided inside the housing 1 and divides the inner cavity of the housing 1 into a first cavity 11 and a second cavity 12. The tube body 4 and the inner container 2 are both provided in the first cavity 11, and the second cavity 12 is used for arranging electrical control components.

[0062] For example, as Figure 4 and Figure 5 shown, the partition 13 can be integrally formed inside the housing 1. The partition 13 is in a flat plate shape and can divide the inner cavity of the housing 1 into two parts, which are the first cavity 11 and the second cavity 12 respectively. Among them, the first cavity 11 can be located above the second cavity 12.

[0063] During assembly, as Figure 4 shown, both the inner container 2 and the tube body 4 can be directly assembled into the first cavity 11 from above the first cavity 11, and the part of the first cavity 11 between the housing 1 and the inner container 2 forms the above-mentioned sandwich cavity 3. The heating element 5 can be installed in the second cavity 12, and a part of the heating element 5 can pass through the partition 13 and the above-mentioned bottom wall 21 and extend into the tube body 4.

[0064] Secondly, electrical control components such as a circuit board can also be installed in the second cavity 12, and the heating element 5 can be electrically connected to the electrical control components, thereby meeting the use requirement of controlling the heating element 5 to heat.

[0065] In some embodiments, the partition 13 and the bottom wall 21 are arranged at intervals and form an interval space 9. The interval space 9 forms part of the sandwich cavity 3. For example, as Figure 4 shown, the bottom wall 21 is located above the partition 13, and the bottom wall 21 and the partition 13 can be spaced apart in the up-down direction and form an interval space 9 between them. The interval space 9 can also be regarded as part of the sandwich cavity 3, so that the bottom of the inner container 2 and the housing 1 do not contact either, and further avoids the situation that heat is conducted from the bottom wall 21 to the partition 13, further restricting the situation that the temperature of the housing 1 is too high.

[0066] In some embodiments, at least one of the partition 13 and the bottom wall 21 is provided with a support portion 211. The support portion 211 is located in the interval space 9 and props between the partition 13 and the bottom wall 21.

[0067] For example, asFigure 4 As shown, the support portion 211 can be integrally formed on the bottom side of the bottom wall 21. The support portion 211 can be a bump or the like, and there can be a plurality of support portions 211, and the plurality of support portions 211 can be arranged at intervals along the circumferential direction of the inner container 2. During assembly, the support portion 211 can play a role in propping between the bottom wall 21 and the partition 13, thus facilitating the formation of the above-mentioned spaced space 9.

[0068] In some other embodiments, the support portion 211 can also be annular and arranged in a circle along the circumferential direction, and the support portion 211 surrounds the outer peripheral side of the above-mentioned first hole.

[0069] In some embodiments, the humidifier includes a sealing ring 6. The partition 13 is provided with a second hole, and the second hole is arranged opposite to the first hole and is used for the heating element 5 to pass through. The sealing ring 6 is arranged in the spaced space 9 and sleeved on the outer peripheral side of the heating element 5, and the sealing ring 6 is in abutting contact with the heating element 5.

[0070] For example, as Figure 3 shown, the sealing ring 6 can be circular and can be a rubber ring. During assembly, the sealing ring 6 can be sleeved on the outer peripheral side of the heating element 5, and in the up and down direction, the sealing ring 6 is clamped and fixed between the bottom wall 21 and the partition 13.

[0071] By means of the sealing ring 6, the effect of sealing the intersection of the heating element 5, the bottom wall 21, and the partition 13 can be achieved, thereby avoiding the leakage of the liquid in the pipe body 4 through the gap at the intersection of the three, ensuring the sealing of the inner cavity of the pipe body 4, and also improving the electrical protection and the safety of use.

[0072] In some embodiments, the partition 13 is provided with an annular portion 131. The annular portion 131 is located in the spaced space 9 and surrounds the outer peripheral side of the heating element 5. The inner peripheral side of the sealing ring 6 is in abutting contact with the heating element 5, and the outer peripheral side of the sealing ring 6 is in abutting contact with the annular portion 131.

[0073] For example, as Figure 4 shown, the annular portion 131 can be integrally formed on the upper surface of the partition 13. The annular portion 131 can be circular, and the annular portion 131 is concentrically arranged with the first hole and can surround the outer peripheral side of the first hole. The annular portion 131 can limit the structure of a stepped groove on the upper side of the partition 13. During assembly, the above-mentioned sealing ring 6 can be directly embedded in the stepped groove, and due to the blocking and limiting of the outer side of the sealing ring 6 by the annular portion 131, it is ensured that the inner peripheral side of the sealing ring 6 can be fully attached to the heating element 5, thereby ensuring the sealing effect.

[0074] In some embodiments, the heating element 5 is connected to the partition 13 and the bottom wall 21 through fasteners 10. The partition 13 is provided with a protruding portion 132 that protrudes away from the bottom wall 21 and forms a groove on the side of the partition 13 facing the bottom wall 21. The bottom wall 21 is provided with a column 213, and the column 213 is inserted and fitted into the groove. The fastener 10 passes through the heating element 5 and the protruding portion 132 and is connected to the column 213.

[0075] For example, as Figure 3 and Figure 4 shown, the protruding portion 132 can be integrally formed on the bottom side of the partition 13, and the protruding portion 132 can protrude downward from the partition 13 and define a groove above the partition 13. As Figure 3 shown, a column 213 can be integrally formed on the bottom side of the bottom wall 21, and the column 213 can be cylindrical. During assembly, the column 213 can be directly inserted into the groove of the protruding portion 132, thereby playing a role in restricting the displacement of the bottom wall 21 and the partition 13 in the horizontal direction and ensuring the structural compactness of the assembly.

[0076] The fastener 10 can be a screw or the like. Through holes for the fastener 10 to pass through can be provided on both the heating element 5 and the protruding portion 132, and a threaded hole can be provided on the column 213. During assembly, the fastener 10 can pass through the heating element 5 and the protruding portion 132 from below and be threadedly assembled with the column 213, thereby realizing the connection and fixation of the heating element 5, the housing 1, and the inner liner 2, and also improving the overall assembly efficiency.

[0077] It should be noted that multiple protruding portions 132 and columns 213 can be provided. The multiple protruding portions 132 and the multiple columns 213 can be arranged at intervals along the circumferential direction. During assembly, the multiple columns 213 can be inserted and assembled one by one into the grooves of the multiple protruding portions 132.

[0078] In some embodiments, one of the bottom wall 21 and the tube body 4 is provided with a card slot 212, and the other is provided with a buckle 42. The buckle 42 is snap-fitted with the card slot 212 to connect the tube body 4 and the bottom wall 21.

[0079] For example, as Figure 3 shown, the buckle 42 can be provided at the bottom of the tube body 4 and on the outer peripheral side of the tube body 4, and the buckle 42 can be integrally formed with the tube body 4. As Figure 4 shown, the card slot 212 can be provided above the bottom wall 21 and on the outer peripheral side of the first hole, and the card slot 212 can be integrally formed with the bottom wall 21. During assembly, the buckle 42 on the tube body 4 can be snap-fitted into the card slot 212, thereby facilitating the connection and fixation of the tube body 4 and the bottom wall 21.

[0080] It should be noted that multiple snap fasteners 42 and multiple card slots 212 can be provided. The multiple snap fasteners 42 can be arranged at equal intervals along the circumferential direction of the pipe body 4, and the multiple card slots 212 can be arranged at equal intervals along the circumferential direction of the first hole. During assembly, the multiple snap fasteners 42 can be respectively snap-fitted at the multiple card slots 212.

[0081] In some embodiments, a plurality of slots 41 are provided at the end of the pipe body 4 adjacent to the heating element 5. The plurality of slots 41 are arranged at intervals along the circumferential direction of the pipe body 4, and the slots 41 are used for allowing liquid to flow into the pipe body 4.

[0082] For example, as Figures 3 to 5 shown, the slot 41 can generally be a trapezoidal slot. The plurality of slots 41 are all provided at the bottom of the pipe body 4 and can be arranged at equal intervals along the circumferential direction of the pipe body 4. After the pipe body 4 is assembled on the bottom wall 21, the inner cavity of the inner container 2 is communicated with the inner cavity of the pipe body 4 through the plurality of slots 41, thus meeting the use requirement of supplying liquid into the pipe body 4.

[0083] In some embodiments, the humidifier includes a cover body 7. The cover body 7 is provided at the top of the housing 1 and is in plug-in fit with the pipe body 4. The cover body 7 is provided with an air outlet 71, and the air outlet 71 is communicated with the inner cavity of the pipe body 4 so that the gas generated in the pipe body 4 can be discharged through the air outlet 71.

[0084] For example, as Figure 4 shown, the cover body 7 can be assembled on the top of the housing 1 by a snap-fit manner. The central position of the cover body 7 can also be in plug-in fit with the top of the pipe body 4, and the central position of the cover body 7 can also be provided with a plurality of air outlets 71. During use, the gas generated in the pipe body 4 due to the heating of the heating element 5 can be discharged through the air outlet 71.

[0085] In some embodiments, the humidifier includes a base 8. The base 8 is provided at the bottom of the housing 1 and is used for sealing the bottom side of the housing 1. For example, as Figure 4 shown, the bottom of the housing 1 can also be open. The base 8 can be installed at the bottom of the housing 1 by means of screw assembly, snap-fitting and the like. By means of the base 8, the bottom side of the first cavity 11 can be hermetically sealed, thus playing a protective role and also facilitating the subsequent maintenance of the electronic control components in the second cavity 12.

[0086] In some embodiments, a first snap-fit portion 14 extending along the circumferential direction of the housing 1 is provided on the inner circumferential side of the housing 1, and a second snap-fit portion 23 extending along the circumferential direction of the inner container 2 is provided on the outer circumferential side of the inner container 2. The first snap-fit portion 14 and the second snap-fit portion 23 are snap-fitted to seal the sandwich cavity.

[0087] For example, as Figure 4As shown, the top of the housing 1 can be open. The first clamping portion 14 can be integrally formed on the inner peripheral wall of the top of the housing 1. The first clamping portion 14 can be a clamping groove with the notch facing upward, and the clamping groove can be arranged in a circle along the circumferential direction of the housing 1. The top of the inner liner 2 can also be open. An annular flange can be provided on the outer peripheral side of the top of the inner liner 2. The second clamping portion 23 can be integrally formed at the outer peripheral edge position of the flange. The first clamping portion 14 can extend downward and be arranged in a circle along the circumferential direction of the flange.

[0088] During assembly, the second clamping portion 23 can be inserted and assembled into the first clamping portion 14. Thus, on the one hand, it can enhance the assembly accuracy of the housing 1 and the inner liner 2, and also enhance the limit constraint effect. On the other hand, it can make the connection at the top side of the inner liner 2 and the housing 1 sealed, thereby ensuring the overall sealing of the sandwich cavity, and further being beneficial to improving the heat insulation effect.

[0089] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0090] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0091] In the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0092] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0093] In the present utility model, the terms "an embodiment", "some embodiments", "an example", "a specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0094] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present utility model.

Claims

1. A humidifier, characterized in that, Comprising: A housing and an inner liner, the inner liner is assembled in the housing, the inner cavity of the inner liner includes a heating cavity for storing and heating a liquid, a sandwich cavity for heat insulation is defined between the inner liner and the housing, and at least part of the sandwich cavity surrounds the outer peripheral side of the heating cavity.

2. The humidifier according to claim 1, wherein It further includes a tube body and a heating element, the tube body is arranged in the inner liner, the inner cavity of the tube body forms the heating cavity, a liquid storage cavity for storing the liquid is defined between the tube body and the inner liner, the heating cavity and the liquid storage cavity are communicated so that the liquid can enter the heating cavity, at least part of the heating element is arranged in the tube body, and the heating element is used to heat the liquid in the heating cavity into a gas.

3. The humidifier according to claim 2, wherein The heating element and the tube body are non-contact.

4. The humidifier according to claim 2, characterized in that, The inner liner includes a bottom wall, the bottom wall is provided with a first hole, the tube body is connected to the bottom wall and surrounds the outer peripheral side of the first hole, and the heating element passes through the first hole and extends into the tube body.

5. The humidifier according to claim 4, wherein, The housing includes a partition board, the partition board is arranged in the housing and divides the inner cavity of the housing into a first cavity and a second cavity, the tube body and the inner liner are both arranged in the first cavity, and the second cavity is used for arranging electric control components.

6. The humidifier according to claim 5, characterized in that, The partition board and the bottom wall are arranged at intervals and form an interval space, and the interval space forms part of the sandwich cavity.

7. The humidifier according to claim 6, wherein, At least one of the partition board and the bottom wall is provided with a support portion, and the support portion is located in the interval space and supports between the partition board and the bottom wall.

8. The humidifier according to claim 6, characterized in that, It includes a sealing ring, the partition board is provided with a second hole, the second hole is arranged opposite to the first hole and is used for the heating element to pass through, the sealing ring is arranged in the interval space and sleeved on the outer peripheral side of the heating element, and the sealing ring is in abutting contact with the heating element.

9. The humidifier according to claim 8, characterized in that, The partition board is provided with an annular portion, the annular portion is located in the interval space and surrounds the outer peripheral side of the heating element, the inner peripheral side of the sealing ring is in abutting contact with the heating element, and the outer peripheral side of the sealing ring is in abutting contact with the annular portion.

10. The humidifier according to claim 5, characterized in that, The heating element is connected to the partition board and the bottom wall through a fastener, the partition board is provided with a protruding portion, the protruding portion protrudes in a direction away from the bottom wall and forms a groove on the side of the partition board facing the bottom wall, the bottom wall is provided with a column body, the column body is inserted and matched in the groove, and the fastener passes through the heating element and the protruding portion and is connected to the column body.

11. The humidifier according to claim 4, characterized in that, One of the bottom wall and the tube body is provided with a clamping groove, and the other is provided with a clamping buckle, and the clamping buckle is clamped and matched with the clamping groove to connect the tube body and the bottom wall.

12. The humidifier according to claim 2, characterized in that, The end of the tube body adjacent to the heating element is provided with a plurality of slots, the plurality of slots are arranged at intervals along the circumferential direction of the tube body, and the slots are used for the liquid to flow into the tube body.

13. The humidifier according to claim 2, characterized in that, It includes a cover body, the cover body is arranged at the top of the housing and is inserted and matched with the tube body, and the cover body is provided with a vent hole, and the vent hole is communicated with the inner cavity of the tube body so that the gas generated in the tube body is discharged through the vent hole; And / or, it includes a base, the base is arranged at the bottom of the housing and is used to seal the bottom side of the housing.

14. The humidifier according to any one of claims 1-13, characterized in that, A first clamping portion extending along the circumferential direction of the housing is provided on the inner circumferential side of the housing, and a second clamping portion extending along the circumferential direction of the inner tank is provided on the outer circumferential side of the inner tank. The first clamping portion and the second clamping portion are clamped and matched to seal the sandwich cavity.

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