Water boiling equipment and steam generator

Abstract

The invention discloses water boiling equipment and a steam generator, and relates to the technical field of life electric appliances, and the water boiling equipment comprises an equipment body, a heating piece and a noise reduction structure; an atomizing cavity and a mounting cavity are formed in the equipment body, and the equipment body is further provided with a mist outlet communicated with the atomizing cavity; the heating element is arranged in the mounting cavity, the heating element is used for heating water in the atomization cavity, the water boiling equipment has a first heating stage and a second heating stage, at least first frequency band noise is formed in the second heating stage, and at least second frequency band noise is formed in the first heating stage and / or the second heating stage; the noise reduction structure is installed on the equipment body, the noise reduction structure comprises a plurality of sound absorption cavities and a plurality of sound absorption holes correspondingly communicating with the sound absorption cavities, the at least two sound absorption cavities are used for correspondingly absorbing the first frequency band noise and the second frequency band noise, and the sound absorption cavities communicate with the atomization cavity or the installation cavity through the sound absorption holes; according to the technical scheme provided by the invention, the noise during equipment operation can be reduced.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a water boiling device and a steam generator. Background Technology

[0002] Currently, noise suppression in household appliances, especially those that generate hot mist, mainly relies on adjusting the outer wall material and thickness of the equipment, the multiple bends of the mist outlet channel, and the shape of the mist outlet. However, these adjustment methods are mostly applicable to some noise radiated outward through the wall surface, but the vast majority of noise can still be radiated outward through the mist outlet channel, the mist outlet, and the cavity near the mist outlet channel, resulting in a very limited effect on suppressing the noise of the equipment. Summary of the Invention

[0003] The main objective of this invention is to provide a water boiling device and a steam generator, which aims to reduce the noise during operation.

[0004] To achieve the above objectives, the present invention provides a water boiling device comprising:

[0005] The device body has an atomizing chamber and an installation chamber inside, and the device body also has a mist outlet that communicates with the atomizing chamber;

[0006] A heating element is disposed in the mounting cavity. The heating element is used to heat the water in the atomizing cavity and to enable the water boiling device to have a first heating stage and a second heating stage. The second heating stage generates at least a first frequency band noise, and the first heating stage and / or the second heating stage also generate at least a second frequency band noise.

[0007] A noise reduction structure is installed on the device body. The noise reduction structure includes multiple sound-absorbing cavities and multiple sound-absorbing holes corresponding to and connected to the sound-absorbing cavities. At least two of the sound-absorbing cavities are used to absorb noise in the first frequency band and noise in the second frequency band respectively. The sound-absorbing cavities are connected to the atomizing cavity or the mounting cavity through the sound-absorbing holes.

[0008] In one embodiment, the noise reduction structure further includes a sound-absorbing tube disposed at the sound-absorbing hole, the sound-absorbing tube protruding from the inner wall or outer wall of the sound-absorbing cavity.

[0009] In one embodiment, at least some of the sound-absorbing holes have different depths;

[0010] And / or, at least some of the sound-absorbing holes have different apertures;

[0011] And / or, at least some of the sound-absorbing cavities have different cross-sectional areas;

[0012] And / or, at least some of the sound-absorbing cavities have different cross-sectional shapes;

[0013] And / or, the cross-sectional shape of the sound-absorbing cavity is any one of rectangular, triangular, trapezoidal, or annular.

[0014] In one embodiment, the device body further includes a mist outlet channel connecting the atomizing chamber and the mist outlet, and the noise reduction structure includes a first noise reduction component, wherein the sound absorption holes of the first noise reduction component are formed in the channel wall of the mist outlet channel.

[0015] In one embodiment, the fog outlet channel includes a fog passage and a reversing passage, the reversing passage is connected above the fog passage and has the fog outlet, and at least one of the fog passage and the reversing passage is connected to the first noise reduction device.

[0016] In one embodiment, the first noise reduction device includes a fog noise reduction device disposed in the fog passage, the fog noise reduction device including a first sub-sound absorption cavity, a first sub-sound absorption hole formed in the channel wall of the fog passage, and a first sub-sound absorption tube communicating with the first sub-sound absorption hole.

[0017] In one embodiment, in the longitudinal section of the water boiling device, the lateral width of the first sub-sound-absorbing cavity is greater than its longitudinal height;

[0018] And / or, the first sub-sound-absorbing tubes are provided in multiple ways, and a return port is formed between two adjacent first sub-sound-absorbing tubes. The device body includes a water storage cavity located below the mist noise reduction component 311, and the return port is connected to the water storage cavity.

[0019] In one embodiment, the reversing passage has an upward opening, and the first noise reduction component includes a fogging noise reduction component disposed in the opening. The fogging noise reduction component includes a second sub-sound-absorbing cavity and a second sub-sound-absorbing hole disposed toward the reversing passage.

[0020] In one embodiment, multiple sub-sound-absorbing cavities and multiple sub-sound-absorbing holes are provided. The fogging noise reduction device further includes a second sub-sound-absorbing tube disposed in the second sub-sound-absorbing hole, and at least a portion of the second sub-sound-absorbing tube protrudes from the outer wall of the connected second sub-sound-absorbing cavity.

[0021] And / or, in the longitudinal section of the water boiling device, the lateral width of the second sub-sound-absorbing cavity is less than its longitudinal height;

[0022] And / or, the longitudinal projection of the fog passage is located on the fog exit noise reduction component.

[0023] In one embodiment, the mist passage and the mist outlet are misaligned in the longitudinal projection of the water boiling device.

[0024] In one embodiment, the atomizing chamber is located above the mounting chamber, the heating element is disposed on the top wall of the mounting chamber, and the noise reduction structure includes at least one second noise reduction element, which is disposed in the mounting chamber and surrounds the heating element.

[0025] In one embodiment, a plurality of second noise reduction components are provided, including a bottom noise reduction component disposed on the bottom wall of the mounting cavity and a side noise reduction component disposed on the outside of the heating element.

[0026] In one embodiment, the bottom noise reduction component is located directly below the heating element, and the bottom sound absorption hole of the bottom noise reduction component faces the heating element;

[0027] And / or, the bottom wall of the mounting cavity is provided with a plurality of exhaust holes arranged around the bottom noise reduction component;

[0028] And / or, the side noise reduction component extends along the cavity sidewall of the mounting cavity and is connected to the cavity sidewall of the mounting cavity;

[0029] And / or, the side sound-absorbing hole of the side noise reduction component is located below the heating element or the side sound-absorbing hole of the side noise reduction component is located on the side of the heating element and is spaced apart from the heating element;

[0030] And / or, the sound-absorbing tube of the second noise-reducing element protrudes from the inner wall of the connected sound-absorbing cavity.

[0031] In one embodiment, the water boiling device further includes a controller connected to the heating element, used to control the water boiling device to switch from a first heating stage to a second heating stage;

[0032] And / or, the heating power corresponding to the first heating stage is greater than the heating power corresponding to the second heating stage.

[0033] In one embodiment, the water boiling device is configured as a humidifier. The water boiling device also includes a mist guide pipe, which is disposed in the device body and surrounds the inner wall of the device body to form a water storage cavity. The mist guide pipe is provided with an atomizing cavity, and the atomizing cavity is connected to the water storage cavity through a water valve.

[0034] The present invention also proposes a steam generator, which has a mist outlet. The steam generator includes a steam generating chamber and a mist outlet channel connecting the steam generating chamber and the mist outlet. A heating element is provided in the steam generating chamber.

[0035] The steam generator also includes a noise reduction structure, which includes multiple sound-absorbing chambers and corresponding sound-absorbing holes connected to the sound-absorbing chambers. The sound-absorbing holes are opened in the mist outlet channel.

[0036] In one embodiment, the noise reduction structure further includes a sound-absorbing tube disposed at the sound-absorbing hole.

[0037] In one embodiment, at least a portion of the sound-absorbing tube protrudes from the inner or outer wall of the sound-absorbing cavity.

[0038] In one embodiment, at least some of the sound-absorbing holes have different depths;

[0039] And / or, at least some of the sound-absorbing holes have different apertures;

[0040] And / or, at least some of the sound-absorbing cavities have different cross-sectional areas;

[0041] And / or, at least some of the sound-absorbing cavities have different cross-sectional shapes;

[0042] And / or, the cross-sectional shape of the sound-absorbing cavity is any one of rectangular, triangular, trapezoidal, or annular.

[0043] In one embodiment, in the longitudinal section of the fog outlet channel, the transverse width of the sound-absorbing cavity is greater than its longitudinal height;

[0044] And / or, the cross-sectional area of ​​the sound-absorbing hole is smaller than the cross-sectional area of ​​the sound-absorbing cavity;

[0045] And / or, the cross-sectional area of ​​the mist outlet channel is greater than the cross-sectional area of ​​the sound absorption hole.

[0046] In the technical solution of this invention, since the water boiling device has a second heating stage and a first heating stage, the second heating stage generates at least a first frequency noise, which is mainly the "bubbling" sound when the water boils. The first heating stage and / or the second heating stage also generate at least a second frequency noise, which is mainly the high-frequency "humming" sound generated by the heating element itself when it is working. The first frequency noise and the second frequency noise propagate outward along the atomizing cavity, the mist outlet channel between the atomizing cavity and the mist outlet, the mist outlet, and along the mounting cavity. Therefore, by arranging a noise reduction structure that connects the atomizing cavity or the mounting cavity, and by using at least two sound-absorbing cavities in the noise reduction structure to absorb the first frequency noise and the second frequency noise respectively, it is helpful to achieve all-round elimination of the equipment's radiated noise and greatly reduce the radiated noise during equipment operation. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0048] Figure 1 A cross-sectional view of an embodiment of the water boiling device provided by the present invention;

[0049] Figure 2 for Figure 1 Exploded view of a water boiling device;

[0050] Figure 3 for Figure 2 Schematic diagram of the middle cover assembly;

[0051] Figure 4 for Figure 3 Side view of the middle cover assembly;

[0052] Figure 5 for Figure 4 A sectional view of the middle cover assembly cut along section line AA;

[0053] Figure 6 for Figure 5 A sectional view of the middle cover assembly cut along the BB section line;

[0054] Figure 7 for Figure 2 Assembly diagram of the central mist outlet component and the mist outlet noise reduction component;

[0055] Figure 8 for Figure 7 Bottom view of the fogging component and the fogging noise reduction component;

[0056] Figure 9 for Figure 8 A cross-sectional view of the central mist outlet component and the mist outlet noise reduction component, cut along the CC section line;

[0057] Figure 10 for Figure 7 Schematic diagram of the structure of the center-outlet fog noise reduction component;

[0058] Figure 11 for Figure 2 Assembly diagram of the bottom noise reduction component and the base assembly;

[0059] Figure 12 for Figure 11 Assembly diagram of the midsole cover and base assembly;

[0060] Figure 13 for Figure 11Top view of the bottom noise reduction component;

[0061] Figure 14 for Figure 13 A cross-sectional view of the bottom noise reduction component, cut along the DD section line;

[0062] Figure 15 This is a schematic diagram of the side noise reduction component being assembled in the mounting cavity;

[0063] Figure 16 for Figure 15 Schematic diagram of the noise reduction component in the middle side section;

[0064] Figure 17 for Figure 16 Side view of the noise reduction component in the middle section;

[0065] Figure 18 for Figure 17 A cross-sectional view of the middle side noise reduction component, cut along the EE section line;

[0066] Figure 19 for Figure 18 A cross-sectional view of the noise reduction component on the middle side, cut along the FF section line.

[0067] Explanation of icon numbers:

[0068] 10. Equipment body; 101. Atomizing chamber; 102. Mounting chamber; 103. Mist outlet; 104. Mist outlet channel; 1041. Mist outlet connection port; 1042. Mist passage; 1043. Reversing passage; 105. Water storage chamber; 11. Outer shell; 111. Buckle; 112. Horizontal partition; 1121. Boss structure; 12. Cover assembly; 121. Return port; 122. Return gap; 123. Return surface; 24. Bayonet; 125. Connecting bridge; 126. Limiting ring; 127. Clearance section; 128. Stop ring; 13. Base assembly; 131. Exhaust port; 132. Connecting hole; 133. Buckle structure; 14. Fog outlet; 141. Connecting section; 1411. Limiting slot; 142. Reversing section; 1421. Gradient expansion section; 1422. Assembly section; 1423. Opening; 15. Fog guide pipe; 151. Fog guide section;

[0069] 20. Heating element;

[0070] 30. Noise reduction structure; 31. First noise reduction component; 311. Fog noise reduction component; 3111. First sub-sound absorption cavity; 3112. First sub-sound absorption hole; 3113. First sub-sound absorption tube; 3114. Upper cover plate; 3115. Lower cover plate; 3116. Partition plate; 312. Fog noise reduction component; 3121. Second sub-sound absorption cavity; 3122. Second sub-sound absorption hole; 3123. Second sub-sound absorption tube; 3124. Fog noise reduction shell; 3125. Top 3126. Cover; 32. Separation structure; 32. Second noise reduction component; 321. Bottom noise reduction component; 3211. Bottom sound absorption cavity; 3212. Bottom sound absorption hole; 3213. Bottom sound absorption tube; 3214. Noise reduction cover; 3215. Bottom cover; 322. Side noise reduction component; 3221. Side sound absorption cavity; 3222. Side sound absorption hole; 3223. Side sound absorption tube; 3224. Annular noise reduction shell; 3225. Sealing plate; 3226. Separation plate.

[0071] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0072] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0073] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0074] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0075] Currently, noise suppression in household appliances, especially those that generate hot mist, mainly relies on adjusting the outer wall material and thickness of the equipment, the multiple bends of the mist outlet channel, and the shape of the mist outlet. However, these adjustment methods are mostly applicable to some noise radiated outward through the wall surface, but the vast majority of noise can still be radiated outward through the mist outlet channel, the mist outlet, and the cavity near the mist outlet channel, resulting in a very limited effect on suppressing the noise of the equipment.

[0076] To solve this technical problem, the present invention proposes a water boiling device, which can be specifically configured as a humidifier, an iron, a kettle, or other devices that generate hot mist.

[0077] Please see Figures 1 to 19 In one embodiment of the present invention, the water boiling device includes a device body 10, a heating element 20, and a noise reduction structure 30. The device body 10 has an atomizing chamber 101 and a mounting chamber 102. The device body 10 also has a mist outlet 103 communicating with the atomizing chamber 101. The heating element 20 is disposed in the mounting chamber 102. The heating element 20 is used to heat the water in the atomizing chamber 101 and to enable the water boiling device to have a first heating stage and a second heating stage. The second heating stage generates at least a first frequency band noise, and the first heating stage and / or the second heating stage also generate at least a second frequency band noise. The noise reduction structure 30 is installed on the device body 10. The noise reduction structure 30 includes a plurality of sound-absorbing chambers and a plurality of sound-absorbing holes corresponding to and communicating with the sound-absorbing chambers. At least two of the sound-absorbing chambers are used to absorb the first frequency band noise and the second frequency band noise respectively. The sound-absorbing chambers are connected to the atomizing chamber 101 or the mounting chamber 102 through the sound-absorbing holes. This can effectively prevent noise from radiating outward and significantly reduce the noise during device operation.

[0078] In the technical solution of the present invention, since the water boiling device has a first heating stage and a second heating stage, the second heating stage generates at least a first frequency band noise, which is mainly the "gurgling" bubbling sound when the water boils. The first heating stage and / or the second heating stage also generate at least a second frequency band noise, which is mainly the high-frequency "humming" sound generated by the heating element 20 itself when it is working. The first frequency band noise and the second frequency band noise propagate outward along the atomizing cavity 101, the mist outlet channel 104 between the atomizing cavity 101 and the mist outlet 103, the mist outlet 103, and along the mounting cavity 102. Therefore, by arranging a noise reduction structure 30 corresponding to and connected to the atomizing cavity 101 or the mounting cavity 102, and by using at least two sound-absorbing cavities in the noise reduction structure 30 to absorb the first frequency band noise and the second frequency band noise respectively, it is helpful to achieve all-round elimination of the equipment's radiated noise and greatly reduce the radiated noise during equipment operation.

[0079] Specifically, the atomizing chamber 101 and the mounting chamber 102 can be arranged vertically or horizontally according to the specific structure of the device body 10, and the two are not connected to each other, ensuring that the water in the atomizing chamber 101 will not flow into and damage the electrical components in the mounting chamber 102. The electrical components include a controller for connecting the heating element 20, which controls the water boiling device to switch from the first heating stage to the second heating stage. Furthermore, the controller controls the heating element 20 to heat in the first heating stage in the first mode and in the second heating stage in the second mode. The heating power corresponding to the first heating stage is greater than the heating power corresponding to the second heating stage, that is, the heating power of the first mode is greater than the heating power of the second mode. More specifically, the heating method of the first mode is continuous heating, and the heating method of the second mode is continuous heating or intermittent heating. When the heating method of the second mode is continuous heating, the water boiling device can be configured as a humidifier in the humidification stage or a device that requires water to boil. When the heating method of the second mode is intermittent heating, the water boiling device can be configured as a kettle in the heat preservation stage.

[0080] Specifically, the heating element 20 is located in the mounting cavity 102 and is used to heat the water in the atomizing cavity 101. Its main function is to heat the water to promote boiling and atomization. The heating element 20 can directly or indirectly heat the water in the atomizing cavity 101. When the heating element 20 directly heats the water in the atomizing cavity 101, an opening can be made in the cavity wall of the atomizing cavity 101 for the heating element 20 to extend into. While ensuring that the heating element 20 is connected to the controller, it can be heated by direct contact between the heating element 20 and the water. It should be noted that the heating element 20 is sealed in the opening to ensure that the atomizing cavity 101 and the mounting cavity 102 are not interconnected. When the heating element 20 indirectly heats the water in the atomizing cavity 101, the heating element 20 can use electromagnetic heating to heat the water.

[0081] Specifically, the noise reduction structure 30 includes multiple sound-absorbing cavities and multiple sound-absorbing holes corresponding to and connected to the sound-absorbing cavities, i.e., a one-to-one arrangement of sound-absorbing cavities and sound-absorbing holes. The sound-absorbing cavities are connected to the atomizing cavity 101 or the mounting cavity 102 through the sound-absorbing holes, which can create local acoustic impedance abrupt changes within the connected cavities to achieve sound absorption and isolate the outward propagation of noise within the corresponding frequency band. In one embodiment, by defining at least two sound-absorbing cavities with different volumes, noise in different frequency bands can be absorbed and eliminated simultaneously, achieving efficient noise elimination and improving the noise reduction effect.

[0082] The two sound-absorbing cavities may have different volumes, which could be due to different cross-sectional areas and / or different cross-sectional shapes. These cross-sections can be obtained by cutting along the axial or radial section of the sound-absorbing hole, and their shapes include, but are not limited to, rectangles, triangles, trapezoids, and annular shapes. However, in other embodiments, the adjustment of the frequency band corresponding to the noise reduction structure 30 can also be determined by the aperture and depth of the sound-absorbing hole.

[0083] The device body 10 is provided with an atomizing chamber 101, an installation chamber 102, and a mist outlet 103 communicating with the atomizing chamber 101. In one embodiment, it may also have a mist outlet channel 104 communicating with the atomizing chamber 101 and the mist outlet 103 to increase the selectivity of the position of the mist outlet 103. The cross-sectional area of ​​the atomizing chamber 101 needs to be larger than the radial cross-sectional area of ​​the mist outlet 103 to facilitate the atomizing chamber 101 to load more water and generate more hot mist. It is also convenient to concentrate the generated hot mist to improve the use effect of the device. Due to the structural changes, the noise of the water boiling device is prone to increase during the diffusion of hot mist. Therefore, the noise reduction structure 30 is set for at least one of the atomizing chamber 101, the installation chamber 102, the mist outlet 103, and the mist outlet channel 104, which can optimize the noise reduction effect of the water boiling device to a certain extent.

[0084] Specifically, in an embodiment of the present invention, the noise reduction structure 30 further includes a sound-absorbing tube disposed at the sound-absorbing hole. The sound-absorbing tube protrudes from the inner wall or outer wall of the sound-absorbing cavity. It is understood that the sound-absorbing tube passes through the sound-absorbing hole, and the thickness of the sound-absorbing tube in its axial direction is the same as the thickness of the cavity wall of the sound-absorbing cavity. In this case, the inner tube of the sound-absorbing tube is configured as the sound-absorbing hole of the noise reduction structure 30, or the sound-absorbing tube is part of the cavity wall of the sound-absorbing cavity. Based on this, through optimization of the sound-absorbing tube... In this configuration, the sound-absorbing tube can protrude from the outer wall of the sound-absorbing cavity and extend out of the cavity. In this case, the sound-absorbing tube can be suspended inside the cavity to be noise-reduced, or it can extend towards the cavity to be noise-reduced and penetrate through the cavity wall, so that the sound-absorbing hole is formed in the cavity wall. Alternatively, the sound-absorbing tube can protrude from the inner wall of the sound-absorbing cavity and be inserted into the cavity. In this case, the sound-absorbing tube is suspended inside the cavity. In other words, the depth of the sound-absorbing hole is equal to the depth of the inner tube of the sound-absorbing tube, and the diameter of the sound-absorbing hole is equal to the diameter of the inner tube of the sound-absorbing tube. Furthermore, in a plurality of sound-absorbing holes on a noise reduction structure 30, at least some sound-absorbing holes do not have sound-absorbing tubes installed inside them, or the sound-absorbing tubes are of equal thickness to the cavity wall of the sound-absorbing cavity. At least some sound-absorbing holes have sound-absorbing tubes extending out of the cavity, and at least some sound-absorbing holes have sound-absorbing tubes inserted into the cavity.

[0085] The sound-absorbing tube protrudes from the inner or outer wall of the corresponding sound-absorbing cavity. This extension of the tube into the cavity reduces the overall volume of the noise reduction structure 30, improving its miniaturization. It also alters the volume of the sound-absorbing cavity, thereby changing the absorbed frequency band noise. The tube's extension facilitates communication between the cavity and the sound-absorbing holes, reducing the difficulty of communication caused by the cavity's distance from the noise-reducing chamber. It also improves the drainage efficiency of condensate within the cavity, reducing the possibility of the tube obstructing the condensate and enhancing the noise reduction effect of the structure 30 on the connected cavity. Furthermore, the tube can extend into and out of the cavity simultaneously, ensuring reliable assembly of the noise reduction structure 30 while maintaining communication between the sound-absorbing holes and the cavity. By changing the volume of the sound-absorbing cavity, the relationship between the sound-absorbing tube and the sound-absorbing cavity can be selectively set according to the installation position of the noise reduction structure 30 on the device body 10. Specifically, the extension length of the sound-absorbing tube can be 0 or it can protrude from the outer wall of the sound-absorbing cavity; the insertion depth of the sound-absorbing tube can be 0 or it can protrude from the inner wall of the sound-absorbing cavity; the sound-absorbing tube can also be set with one end protruding from the outer wall of the sound-absorbing cavity and the other end protruding from the inner wall of the sound-absorbing cavity. Furthermore, by adjusting parameters such as the cross-sectional area of ​​the sound-absorbing tube, the insertion depth of the sound-absorbing tube, the extension length, and the volume of the sound-absorbing cavity, impedance abrupt change or impedance adaptation can be achieved, so that the noise reduction structure 30 has different noise reduction capabilities. Thus, the acoustic impedance of the noise reduction structure 30 at the entrance of the sound-absorbing hole has abrupt change or impedance adaptation with the air acoustic impedance, achieving the purpose of sound insulation or full sound absorption.

[0086] The cavity connected to the sound-absorbing cavity is specifically the cavity to be noise-reduced that is connected to the noise reduction structure 30. Because the radial width of the sound-absorbing hole is much smaller than the radial width of the cavity to which the sound-absorbing hole is connected, a sudden change in width will occur at the connection between the sound-absorbing hole and the cavity to which the sound-absorbing hole is connected. Similarly, because the radial width of the sound-absorbing hole is much smaller than the radial width of the sound-absorbing cavity, a sudden change in width will occur at the connection between the sound-absorbing hole and the sound-absorbing cavity. This sudden change in width causes a sudden change in cross-section, resulting in a change in acoustic impedance. Furthermore, when steam flows through the cavity to which the sound-absorbing hole is connected, the steam flow rate will cause a change in acoustic impedance. Through the above structural design, when noise propagates upward through the cavity to which the noise is to be reduced, the sound-absorbing cavity has a local impedance modulation effect on the cavity to which the noise is to be reduced, which prevents the noise from continuing to propagate downstream. Also, because the impedance of a portion of the sound-absorbing hole is matched with that of the cavity to which the noise is to be reduced, all the noise enters the sound-absorbing hole and is converted into heat energy through molecular thermal motion, thereby achieving noise elimination.

[0087] Optionally, in embodiments of the present invention, at least some of the sound-absorbing holes have different depths; and / or, at least some of the sound-absorbing holes have different diameters; and / or, at least some of the sound-absorbing cavities have different cross-sectional areas; and / or, at least some of the sound-absorbing cavities have different cross-sectional shapes. Thus, by adjusting the parameters of the sound-absorbing holes and / or the parameters of the sound-absorbing cavities, a noise reduction structure 30 (or a noise reduction component within the noise reduction structure 30) can simultaneously absorb and eliminate noise in multiple different frequency bands, achieving efficient noise elimination and improving the noise reduction effect.

[0088] Optionally, in an embodiment of the present invention, the cross-sectional shape of the sound-absorbing cavity is any one of a rectangle, triangle, trapezoid, or ring. That is, depending on the location of the noise reduction structure 30 and the frequency range of noise absorbed, the cross-sectional shape of the sound-absorbing cavity includes, but is not limited to, a rectangle, triangle, trapezoid, or ring, so as to fully adapt to the installed structure and make reasonable use of the space within the device body 10. This can not only ensure the noise reduction effect of the noise reduction structure 30, but also improve the miniaturization level of the water boiling equipment.

[0089] Optionally, in an embodiment of the present invention, the sound-absorbing hole is located in the central region of the cavity wall of the sound-absorbing cavity, thereby improving the noise reduction effect of the noise reduction structure 30. Specifically, a central region is provided on the cavity wall of the sound-absorbing cavity for opening the sound-absorbing hole. The distance between the central region and each edge of the cavity wall is equal, which can reduce the dead angle of noise reflection in the sound-absorbing cavity to a certain extent, and make full use of the sound-absorbing cavity to absorb and eliminate noise. Taking the cavity wall shape of the sound-absorbing cavity as a rectangle, the central region is located at the intersection of the two symmetrical lines of the rectangle; or, taking the cavity wall shape of the sound-absorbing cavity as a circle, the central region is located at the center of the circle.

[0090] For ease of description, the directions of up and down, top and bottom as referred to below are based on the arrangement of the atomizing chamber 101 and the mounting chamber 102. That is, taking the atomizing chamber 101 and the mounting chamber 102 as an example of being arranged vertically, the direction from the mounting chamber 102 toward the atomizing chamber 101 is the upward direction, and the position indicated by this direction is the top position. Conversely, the direction from the mounting chamber 102 toward the atomizing chamber 101 is the downward direction, and the position indicated by this direction is the bottom position.

[0091] Please see Figure 1 In an embodiment of the present invention, the device body 10 further includes a mist outlet channel 104 connecting the atomizing chamber 101 and the mist outlet 103. The noise reduction structure 30 includes a first noise reduction component 31, the sound-absorbing holes of the first noise reduction component 31 being formed in the channel wall of the mist outlet channel 104. It can be understood that hot mist is generated in the atomizing chamber 101, diffuses along the mist outlet channel 104, and is sprayed out of the water boiling device from the mist outlet 103. The mist outlet channel 104 is connected through the sound-absorbing holes of the first noise reduction component 31, which can effectively reduce the noise propagating outward along the mist outlet channel 104.

[0092] Specifically, in an embodiment of the present invention, the mist outlet channel 104 includes a mist passage 1042 and a reversing passage 1043. The reversing passage 1043 is connected above the mist passage 1042 and is provided with a mist outlet 103. At least one of the mist passage 1042 and the reversing passage 1043 is connected to the first noise reduction component 31. It can be understood that the mist passage 1042 has a mist outlet connection port 1041, and the reversing passage 1043 communicates with the mist outlet connection port 1041 and has a mist outlet 103 on its channel wall. This can seal the mist outlet connection port 1041 and instead spray the mist through the mist outlet 103, reducing the risk of scalding caused by hot mist flowing directly out of the mist outlet connection port 1041 and improving the safety of the water boiling equipment. One or more first noise reduction components 31 are installed on the mist outlet channel 104. By utilizing the absorption of noise in the same or different frequency bands by each first noise reduction component 31, all-round noise elimination can be achieved, thereby further improving the noise reduction effect of the water boiling equipment. Furthermore, the arrangement of each first noise reduction component 31 along the mist outlet channel 104 facilitates the subsequent first noise reduction component 31 to check and supplement the noise reduction effect of the previous first noise reduction component 31, while eliminating newly generated noise.

[0093] Because the mist passage 1042 connects to the atomizing chamber 101, a large amount of hot mist gathers and flows through the mist passage 1042, which can easily generate noise. Therefore, the present invention provides a corresponding first noise reduction component 31 at the mist passage 1042, i.e., please refer to [link to relevant documentation]. Figures 3 to 6 In an embodiment of the present invention, the first noise reduction component 31 includes a fog noise reduction component 311 disposed in the fog passage 1042. The fog noise reduction component 311 includes a first sub-sound absorption cavity 3111, a first sub-sound absorption hole 3112 formed in the channel wall of the fog passage 1042, and a first sub-sound absorption tube 3113 communicating with the first sub-sound absorption hole 3112. The sound absorption cavity includes the first sub-sound absorption cavity 3111, the sound absorption hole includes the first sub-sound absorption hole 3112, and the sound absorption tube includes the first sub-sound absorption tube 3113, that is, the first sub-sound absorption cavity 3111, the first sub-sound absorption hole 3112, and the first sub-sound absorption tube 3113. The relevant limitations of the first sub-sound-absorbing tube 3113 can be referred to the sound-absorbing cavity, sound-absorbing hole, and sound-absorbing tube of the noise reduction structure 30. Furthermore, the first sub-sound-absorbing cavity 3111 is connected to the first sub-sound-absorbing hole 3112 through the first sub-sound-absorbing tube 3113, and is connected to the fog passage 1042, ensuring that the noise propagating along the fog passage 1042 enters the first sub-sound-absorbing cavity 3111 through the first sub-sound-absorbing hole 3112, thus completing the absorption of noise by the fog noise reduction component 311. In addition, the fog noise reduction component 311 can simultaneously eliminate noise in different frequency bands, ensuring the noise reduction effect of the fog noise reduction component 311 on the noise in the fog passage 1042.

[0094] Specifically, the device body 10 also includes a cover assembly 12 disposed on the top of the device body 10. The cover assembly 12 includes an upper cover plate 3114, a lower cover plate 3115, and a mist passage 1042 penetrating the upper cover plate 3114 and the lower cover plate 3115. The upper cover plate 3114 and the lower cover plate 3115 are connected, and a first sub-sound-absorbing cavity 3111 is formed between them. Each first sub-sound-absorbing cavity 3111 is arranged around the periphery of the mist passage 1042, and a first sub-sound-absorbing tube 3113 is connected to the side facing the mist passage 1042. One end of the sound-absorbing tube 3113 is connected to the mist passage 1042, and a first sub-sound-absorbing hole 3112 is formed on the mist passage 1042. The other end is connected to the first sub-sound-absorbing cavity 3111. Thus, the mist noise reduction component 311 is integrated into the cover assembly 12, which can improve the airtightness of the device body 10, form a complete water boiling device, reduce the risk of water overflow from the internal storage, and simplify the installation steps of the mist noise reduction component 311 on the device body 10. It is only necessary to put on the cover assembly 12 to complete the docking of the mist passage 1042 and the atomizing cavity 101, which improves the overall assembly efficiency and reduces the number of parts. The connection methods between the upper cover plate 3114 and the lower cover plate 3115 include, but are not limited to, snap-fit ​​connection 111, adhesive connection, and tenon and mortise connection.

[0095] like Figure 5 As shown, the cover assembly 12 also includes a plurality of partitions 3116 that separate a plurality of first sub-sound-absorbing cavities 3111. The thickness of the partitions 3116 gradually increases in the direction away from the mist passage 1042, which helps to enhance the overall structural strength of the cover assembly 12, ensure that each first sub-sound-absorbing cavity 3111 can reliably absorb and eliminate noise in the corresponding frequency band, improve the service life of the water boiling equipment and user satisfaction.

[0096] Please see Figure 1 and Figure 6 In an embodiment of the present invention, in the longitudinal section of the water boiling device, the lateral width of the first sub-sound-absorbing cavity 3111 is greater than its longitudinal height; the first sub-sound-absorbing cavity 3111 can be at least rectangular or trapezoidal in shape in the longitudinal section of the water boiling device, which can increase the cross-sectional area of ​​the first sub-sound-absorbing cavity 3111 to a certain extent, thereby improving the sound absorption characteristics of the mist noise reduction component 311 and enhancing the noise reduction capability of the mist noise reduction component 311. The longitudinal direction of the longitudinal section specifically refers to the direction from the atomizing cavity 101 to the mist outlet 103.

[0097] Please see Figure 5In an embodiment of the present invention, multiple first sub-sound-absorbing tubes 3113 are provided, and a return port 121 is formed between two adjacent first sub-sound-absorbing tubes 3113. The device body 10 includes a water storage chamber 105 located below the mist noise reduction component 311. The return port 121 is connected to the water storage chamber 105. Thus, when the hot mist sprayed from the mist outlet 103 condenses into water on the cover assembly 12, the condensate can slide along the upper cover plate 3114 and flow to the return port 121, and then return to the water storage chamber 105 to flow back to the atomizing chamber 101 for heating and atomization, thereby improving the utilization rate of water resources.

[0098] Specifically, the circumferential dimension of each return port 121 gradually increases along the circumference of the cover assembly 12. That is, with the mist passage 1042 as the center of the cover assembly 12, i.e. located on the central axis of the cover assembly 12, each first sub-sound-absorbing tube 3113 is arranged along the circumference of the mist passage 1042 and extends outward. A return port 121 is formed between two adjacent first sub-sound-absorbing tubes 3113. Furthermore, in the circumference of the cover assembly 12, the distance between the ends of any two adjacent first sub-sound-absorbing tubes 3113 away from the mist passage 1042 gradually increases. This facilitates the return of condensate water, reduces the possibility of condensate water impacting the first sub-sound-absorbing tubes 3113, and also shows that each first sub-sound-absorbing cavity 3111 gradually increases along the circumference of the cover assembly 12, thereby improving the ability of the mist noise reduction component 311 to eliminate noise in different frequency bands.

[0099] The device body 10 also includes a housing 11, and a cover assembly 12 is disposed on the top of the housing 11. The water storage chamber 105 can be formed by the housing 11 and the cover assembly 12 and is located below the cover assembly 12, that is, below the mist noise reduction component 311. In other words, the maximum water level of the water storage chamber 105 is located below the mist noise reduction component 311, which effectively prevents the water in the water storage chamber 105 from overflowing from the return port 121.

[0100] Optionally, the cover assembly 12 has a circular cross-sectional shape. In this case, the outer contour of the outer shell 11 is a matching circle, which facilitates the assembly between the cover assembly 12 and the outer shell 11. In other embodiments, the cover assembly 12 has a rectangular cross-sectional shape. A rotation locking structure is provided between the outer shell 11 and the cover assembly 12. The rotation locking structure includes a matching bayonet 124 and a buckle 111. The bayonet 124 is formed on the periphery of the cover assembly 12, and the buckle 111 is connected to the outer shell 11, which facilitates the quick assembly and disassembly of the cover assembly 12. Of course, in other embodiments, the outer shell 11 and the cover assembly 12 are assembled by pressing and locking or other methods. The cover assembly 12 is provided with a clearance part 127 that avoids the rotation locking structure. The clearance part 127 is a cavity formed in the cover assembly 12. The cavity is located near the latch 124 and allows the latch 111 to be inserted when it is engaged with the latch 124, thereby reducing interference between the latch 111 and other structures of the cover assembly 12.

[0101] Furthermore, to accelerate the reflux efficiency, the upper cover plate 3114 may be in the form of an annular structure, and a reflux gap 122 connecting the reflux port 121 is provided between the inner edge of the upper cover plate 3114 and the mist passage 1042. The radial length of the reflux gap 122 may be less than or equal to the length of the first sub-sound-absorbing tube 3113, so as to ensure that the condensate sliding along the upper cover plate 3114 can enter the reflux port 121 through the reflux gap 122, thereby improving the reliability of reflux.

[0102] The upper surface of the cover plate 3114 is a return surface 123 that slopes downward from the outer edge of the cover assembly 12 toward the mist passage 1042, so that the condensate automatically slides to the return gap 122 under gravity and flows back to the water storage chamber 105 through the return port 121, which helps to further improve the return efficiency.

[0103] In addition, such as Figure 3 As shown, a connecting bridge 125 can be provided between the inner edge of the upper cover plate 3114 and the mist passage 1042, which helps to enhance the structural stability of the mist passage 1042 and improve the structural strength of the cover assembly 12. The outer edge of the upper cover plate 3114 is provided with a stop ring 128 that cooperates with the outer shell 11. The stop ring 128 is located above the latch 124, which can effectively prevent the cover assembly 12 from sinking excessively, while ensuring the latch 124 and the buckle 111 are engaged.

[0104] Because the reversing passage 1043 connects to the mist passage 1042 and changes the flow direction of the hot mist flowing out of the mist passage 1042, noise is easily generated during this process. Therefore, the present invention provides a corresponding first noise reduction component 31 at the reversing passage 1043, i.e., please refer to [link to relevant documentation]. Figures 7 to 10In an embodiment of the present invention, the reversing passage 1043 has an upward opening 1423. The first noise reduction component 31 includes a fogging noise reduction component 312 disposed in the opening 1423. The fogging noise reduction component 312 includes a second sub-sound absorption cavity 3121 and a second sub-sound absorption hole 3122 disposed toward the reversing passage 1043. The sound absorption cavity includes the second sub-sound absorption cavity 3121, and the sound absorption hole includes the second sub-sound absorption hole 3122. That is, the relevant definitions of the second sub-sound absorption cavity 3121 and the second sub-sound absorption hole 3122 can be referred to the sound absorption cavity and sound absorption hole of the noise reduction structure 30. Furthermore, the hot fog flowing out of the fog passage 1042 flows toward the fog outlet 103 of the reversing passage 1043. To reduce the possibility of burns, a fogging noise reduction component 312 is installed in the opening 1423. The fogging noise reduction component 312 is part of the channel wall of the fogging channel 104, and the second sub-sound absorption hole 3122 of the fogging noise reduction component 312 is set towards the fog passage 1042. The second sub-sound absorption cavity 3121 is connected to the reversing passage 1043 through the second sub-sound absorption hole 3122, ensuring that the noise propagating along the reversing passage 1043 enters the second sub-sound absorption cavity 3121 through the second sub-sound absorption hole 3122, thus completing the absorption of noise by the fogging noise reduction component 312. Furthermore, the fogging noise reduction component 312 can simultaneously eliminate noise in different frequency bands, ensuring the noise reduction effect of the fogging noise reduction component 312 on the noise in the reversing passage 1043.

[0105] Specifically, the cover assembly 12 has a mist outlet 1041 that connects to the mist passage 1042. The device body 10 also includes a mist outlet component 14, which is connected to the mist outlet 1041 and has a reversing passage 1043 that connects to the mist outlet 1041. A rotation locking structure and a limiting structure are provided between the mist outlet component 14 and the cover assembly 12. The rotation locking structure includes a matching locking hole and a fastener. The locking hole is formed in the cover assembly 12, and the fastener is connected to the mist outlet component 14, so as to realize the quick assembly and disassembly of the mist outlet component 14 on the cover assembly 12. However, in other embodiments, the mist outlet component 14 and the cover assembly 12 are assembled by pressing and locking or other methods. The limiting structure includes a matching limiting ring 126 and a limiting groove 1411. The cover assembly 12 has a limiting ring 126 outside the mist outlet 1041, and the mist outlet 14 has a limiting groove 1411 on its outer periphery. The limiting ring 126 and the limiting groove 1411 engage in limiting contact, reducing the possibility of the mist outlet 14 colliding with the cover assembly 12. However, in other embodiments, the limiting structure is configured as a limiting block.

[0106] The fogging noise reduction component 312 includes a fogging noise reduction shell 3124 and a top cover 3125. The fogging noise reduction shell 3124 is connected to the top cover 3125 to form the plurality of second sub-sound absorption cavities 3121. The fogging noise reduction shell 3124 is connected to the end of the fogging component 14 away from the cover assembly 12. The side of the fogging noise reduction shell 3124 facing the fogging connection port 1041 is provided with a second sub-sound absorption hole 3122. The cross-sectional shape of the fogging noise reduction component 312 includes, but is not limited to, a circle and a square. The connection method between the fogging noise reduction shell 3124 and the top cover 3125 includes, but is not limited to, snap-fit ​​connection 111, adhesive connection, tenon and mortise connection, and threaded connection. The fogging noise reduction shell 3124 is adapted to the fogging component 14 for installation, and the connection method between the two includes, but is not limited to, snap-fit ​​connection 111, adhesive connection, and tenon and mortise connection.

[0107] Furthermore, a partition structure 3126 is provided between the fog-emitting noise-reducing shell 3124 and the top cover 3125, which can be spliced ​​together, thus facilitating the connection between the fog-emitting noise-reducing shell 3124 and the top cover 3125. Figure 9 As shown, the interlocking partition structure 3126 assists in the alignment of the corresponding connection structure, thereby accelerating the connection efficiency; it also facilitates the formation of multiple non-interconnected second sub-sound absorption cavities 3121; wherein, the partition structure 3126 can be configured as partition ribs formed on the fog noise reduction shell 3124 and the top cover 3125.

[0108] Optionally, in an embodiment of the present invention, multiple second sub-sound-absorbing cavities 3121 and second sub-sound-absorbing holes 3122 are provided. The fogging noise reduction component 312 further includes a second sub-sound-absorbing tube 3123 disposed in the second sub-sound-absorbing hole 3122, at least a portion of the second sub-sound-absorbing tube 3123 protruding from the outer wall of the connected second sub-sound-absorbing cavity 3121; wherein, the sound-absorbing tube includes the second sub-sound-absorbing tube 3123, that is, the relevant definition of the second sub-sound-absorbing tube 3123 can be referred to the sound-absorbing tube of the noise reduction structure 30; since the reversing passage 1043 is connected above the fog passage 1042, and the fogging noise reduction component 312 is located above the fogging component 14, the second sub-sound-absorbing hole 3122 is disposed facing the fogging connection port 1041 of the fog passage 1042, in order to avoid hot fog in the second sub-sound-absorbing cavity 3122. Condensation occurs inside cavity 3121, and the condensate accumulates inside the second sub-sound-absorbing cavity 3121. When the second sub-sound-absorbing hole 3122 is not equipped with a second sub-sound-absorbing tube 3123 or the second sub-sound-absorbing tube 3123 is of equal thickness to the cavity wall of the second sub-sound-absorbing cavity 3121, the condensate can flow out directly. When the second sub-sound-absorbing hole 3122 is equipped with a second sub-sound-absorbing tube 3123, one end of the second sub-sound-absorbing tube 3123 is connected to the second sub-sound-absorbing hole 3122 formed on the cavity wall of the second sub-sound-absorbing cavity 3121, and the other end extends away from the second sub-sound-absorbing cavity 3121. This ensures that the condensate flows out smoothly from the second sub-sound-absorbing tube 3123, and avoids the condensate from being blocked in the second sub-sound-absorbing cavity 3121 due to protrusion of the cavity wall of the second sub-sound-absorbing cavity 3121, which would affect the absorption and elimination of noise by the fogging noise reduction component 312.

[0109] Please see Figure 9 In an embodiment of the present invention, in the longitudinal section of the water boiling device, the lateral width of the second sub-sound-absorbing cavity 3121 is smaller than its longitudinal height; the second sub-sound-absorbing cavity 3121 can be at least rectangular or trapezoidal in shape in the longitudinal section of the water boiling device, which can reduce the lateral dimension of the mist-emitting noise reduction component 312 to a certain extent, and make reasonable use of the longitudinal assembly space of the water boiling device. The longitudinal direction of the longitudinal section specifically refers to the direction from the atomizing cavity 101 to the mist outlet 103, and can also be the vertical direction of the water boiling device.

[0110] Please see Figure 8 and Figure 9In an embodiment of the present invention, the longitudinal projection of the mist passage 1042 is located on the mist outlet noise reduction component 312. That is, the cross-sectional area of ​​the mist passage 1042 is less than or equal to the cross-sectional area of ​​the mist outlet noise reduction component 312. When the cross-sectional area of ​​the mist passage 1042 is less than the cross-sectional area of ​​the mist outlet noise reduction component 312, due to the sudden change in volume, the additional noise generated, along with the noise remaining during the propagation process, can be absorbed and eliminated by the mist outlet noise reduction component 312. At the same time, the force of the hot mist being ejected outward from the mist outlet 103 is reduced. When the cross-sectional area of ​​the mist passage 1042 is equal to the cross-sectional area of ​​the mist outlet noise reduction component 312, the hot mist flows smoothly from the mist passage 1042 to the reversing passage 1043, and the mist outlet noise reduction component 312 absorbs the noise propagating from the atomizing chamber 101 to the reversing passage 1043.

[0111] Please see Figure 8 In an embodiment of the present invention, the mist passage 1042 and the mist outlet 103 are misaligned in the longitudinal projection of the water boiling device. It can be understood that the mist passage 1042 is a constant diameter structure, and the diameter of the passage 1042 is the same as the diameter of the mist outlet 1041. At this time, the distance between the axis of the mist outlet 103 and the mist outlet 1041 is greater than the diameter of the mist outlet 1041. This provides space to reliably switch the hot mist ejected from the mist outlet 1041 from upward spraying to side spraying. It also allows the mist outlet 14 with the reversing passage 1043 to block the mist outlet 1041 and the return port 121, reducing the gap between the mist outlet 14 and the cover assembly 12, thereby reducing the possibility of foreign objects entering the device body 10.

[0112] Please see Figure 9 In an embodiment of the present invention, the misting component 14 includes a connecting section 141 and a reversing section 142. One end of the connecting section 141 is connected to the device body 10, and the other end is connected to the reversing section 142. The reversing section 142 is connected to the misting noise reduction component 312 on the side opposite to the connecting section 141. The mist outlet 103 is formed on the reversing section 142, and / or the mist outlet 103 is located on the periphery of the misting noise reduction component 312. It can be understood that the connecting section 141 is used for docking. The mist outlet connection port 1041 connects the mist outlet component 14 to the cover assembly 12. At this time, a rotation locking structure and a limiting structure are provided between the connecting section 141 and the cover assembly 12 to ensure the quick assembly and disassembly of the mist outlet component 14. The reversing section 142 has an opening 1423 at the end away from the connecting section 141 so that the mist outlet noise reduction component 312 can be connected to the reversing section 142 and communicate with the reversing passage 1043, thereby completing the absorption and elimination of noise propagating to the reversing passage 1043 by the mist outlet noise reduction component 312.

[0113] The mist outlet 103 is formed in the reversing section 142 to realize the reversing spraying of hot mist. Multiple mist outlets 103 are evenly spaced along the circumference of the reversing section 142 to achieve omnidirectional mist output. The mist outlets 103 are located below and / or on the periphery of the mist noise reduction component 312, mainly depending on the specific structure of the mist outlet component 14. When all of the mist outlet component 14 is located below the mist noise reduction component 312, the mist outlets 103 form... The mist outlet 103 is formed in the reversing section 142 and located below the mist outlet noise reduction component 312. When the mist outlet 14 partially surrounds the mist outlet noise reduction component 312 and is located on the periphery of the mist outlet noise reduction component 312, the mist outlet 103 can be formed in the part of the reversing section 142 located below the mist outlet noise reduction component 312 or in the part of the reversing section 142 located on the periphery of the mist outlet noise reduction component 312. The specific structure of the mist outlet 14 is not limited here, provided that the hot mist is sprayed out laterally.

[0114] Further, the reversing section 142 includes a gradually expanding section 1421 and an assembly section 1422. The gradually expanding section 1421 connects to the connecting section 141 and gradually expands from the connecting section 141 toward the assembly section 1422. The assembly section 1422 connects to the mist outlet noise reduction component 312. The mist outlet 103 extends from the gradually expanding section 1421 to the assembly section 1422. It can be understood that the connecting section 141 is connected to the small-diameter end of the gradually expanding section 1421 and is located on the centerline of the gradually expanding section 1421. Along the centerline, the cross-section of the gradually expanding section 1421 gradually increases to mitigate the impact of the abrupt volume change between the mist passage 1042 and the reversing passage 1043, reducing noise generation. Simultaneously, it ensures that the mist outlet 103 formed in the reversing section 142 is misaligned with the mist outlet connection 1041, guaranteeing a reliable change in the flow direction of the hot mist. Furthermore, the projection of the gradually expanding section 1421 covers the mist outlet connection 1041, reducing the gap between the mist outlet component 14 and the upper cover plate 3114 of the cover assembly 12, thus reducing the possibility of foreign objects entering the device body 10 through this gap. The large-diameter end of the gradually expanding section 1421 connects to the assembly section 1422. The gradually expanding section 1421 and the assembly section 1422 are integrated. The assembly section 1422 can be formed by extending the large-diameter end of the gradually expanding section 1421 in a direction away from the connecting section 141 with equal diameter, facilitating the assembly of the mist outlet component 14 with the cover assembly 12 and the mist noise reduction component 312.

[0115] The mist outlet 103 extends from the expanding section 1421 to the assembly section 1422, meaning the mist outlet 103 spans both the expanding section 1421 and the assembly section 1422. This increased size of the mist outlet 103 helps increase the amount of mist emitted from a single outlet. Furthermore, because the outer walls of the expanding section 1421 and the assembly section 1422 are not on the same plane, the hot mist ejection directions of the mist outlet 103 located in the expanding section 1421 and the mist outlet 103 located in the assembly section 1422 are different, which can increase the coverage area of ​​the hot mist to a certain extent. Of course, in other embodiments, the mist outlet 103 can also be located on the periphery of the mist noise reduction component 312 to change the mist height.

[0116] Because the heating element 20 generates a high-frequency "humming" sound when it is working, and because the mounting cavity 102 where the heating element 20 is located is close to the atomizing cavity 101, the "bubbling" sound generated when the water in the atomizing cavity 101 boils will also propagate to the mounting cavity 102. Therefore, in this embodiment of the invention, the atomizing cavity 101 is located above the mounting cavity 102, the heating element 20 is disposed on the top wall of the mounting cavity 102, and the noise reduction structure 30 includes at least one second noise reduction element 32, which is disposed in the mounting cavity 102 and surrounds the heating element 20. Understandably, the atomizing chamber 101 is located above the mounting chamber 102. To ensure that the heating element 20 heats the water in the atomizing chamber 101, the heating element 20 is located on the top wall of the mounting chamber 102 and close to the atomizing chamber 101. Furthermore, by providing one or more second noise reduction elements 32 in the mounting chamber 102, it helps to absorb the noise radiated to the mounting chamber 102 when the water boiling device is working, such as the "gurgling" bubbling sound radiated from the atomizing chamber 101 toward the mounting chamber 102 and the high-frequency "humming" sound generated by the heating element 20 itself when it is working, thereby reducing the noise propagating outward from the mounting chamber 102.

[0117] Please see Figure 1 , Figures 11 to 19 In an embodiment of the present invention, a plurality of second noise reduction components 32 are provided. The plurality of second noise reduction components 32 include a bottom noise reduction component 321 provided on the bottom wall of the mounting cavity 102 and a side noise reduction component 322 provided on the outside of the heating component 20. That is, the side noise reduction component 322 and the bottom noise reduction component 321 are sequentially provided on the noise diffusion path to enhance the absorption and elimination of noise propagating outward from the mounting cavity 102.

[0118] Please see Figure 1 , Figures 11 to 14In an embodiment of the present invention, the bottom noise reduction component 321 is located directly below the heating element 20, and the bottom sound absorption hole 3212 of the bottom noise reduction component 321 faces the heating element 20. It can be understood that the bottom noise reduction component 321 includes a bottom sound absorption cavity 3211 and a bottom sound absorption hole 3212 communicating with the bottom sound absorption cavity 3211. The sound absorption cavity includes the bottom sound absorption cavity 3211, and the sound absorption hole includes the bottom sound absorption hole 3212. That is, the relevant definitions of the bottom sound absorption cavity 3211 and the bottom sound absorption hole 3212 can be referenced to the sound absorption cavity of the noise reduction structure 30. The bottom noise reduction component 321 is located directly below the heating component 20. The bottom sound absorption hole 3212 is located on the top surface of the bottom noise reduction component 321 and faces the heating component 20. This ensures that the bottom sound absorption hole 3212 is connected to the mounting cavity 102, ensuring that the noise in the mounting cavity 102 enters the bottom sound absorption cavity 3211 through the bottom sound absorption hole 3212, thus completing the absorption of noise by the bottom noise reduction component 321. Furthermore, the bottom noise reduction component 321 can simultaneously eliminate noise in different frequency bands, ensuring the noise reduction effect of the bottom noise reduction component 321 on the noise in the mounting cavity 102.

[0119] To further improve the noise reduction effect, the top wall of the mounting cavity 102 is provided with a boss structure 1121 protruding towards the bottom noise reduction component 321. The heating element 20 is disposed on the boss structure 1121. This arrangement shortens the path of noise to the bottom noise reduction component 321 and ensures that the bottom sound absorption hole 3212 is as close as possible to the noise area, thereby improving the noise reduction effect. In addition, by limiting the longitudinal projection of the heating element 20 to be located on the bottom noise reduction component 321, it can be ensured to a certain extent that the noise reduction area of ​​the bottom noise reduction component 321 covers the diffusion area of ​​the noise generated by the heating element 20, which also helps to improve the noise reduction effect.

[0120] Furthermore, multiple bottom sound-absorbing cavities 3211 and bottom sound-absorbing holes 3212 are provided. The bottom noise reduction component 321 also includes a bottom sound-absorbing tube 3213 disposed in the bottom sound-absorbing hole 3212, with at least a portion of the bottom sound-absorbing tube 3213 protruding from the inner wall of the connected bottom sound-absorbing cavity 3211. The sound-absorbing tube includes the bottom sound-absorbing tube 3213, and the relevant definition of the bottom sound-absorbing tube 3213 can be referred to the sound-absorbing tube of the noise reduction structure 30. Furthermore, by providing the bottom sound-absorbing tube 3213, the frequency range of noise absorbed and eliminated by a single bottom sound-absorbing cavity 3211 can be changed, increasing the diversity of absorbed frequency range noise. With the bottom sound-absorbing tube 3213 inserted into the bottom sound-absorbing cavity 3211, the overall space occupied by the bottom noise reduction component 321 can be reduced.

[0121] Optionally, the device body 10 also includes a housing 11 and a base assembly 13 disposed below the housing 11. The housing 11 and the base assembly 13 are connected to form a mounting cavity 102. The connection method between the housing 11 and the base assembly 13 includes, but is not limited to, snap-fit ​​connection, screw connection, and plug-in connection. In this embodiment, the housing 11 and the base assembly 13 are snap-fit ​​connected by a snap-fit ​​structure 133 and are also locked to the connection hole 132 on the device body 10 by screws to enhance the connection reliability of the housing 11 and the base assembly 13.

[0122] The bottom noise reduction component 321 is fixed to the base assembly 13. The bottom noise reduction component 321 is integrally formed with the base assembly 13, or it is detachably connected to the base assembly 13. Specifically, in one embodiment, the bottom noise reduction component 321 includes a noise reduction cover 3214 and a bottom cover 3215. The noise reduction cover 3214 is connected to the bottom cover 3215 to form the plurality of bottom sound-absorbing cavities 3211. The noise reduction cover 3214 has the plurality of bottom sound-absorbing tubes 3213 on the side opposite to the bottom cover 3215. The bottom cover 3215 is connected to the base assembly 13; in other words, the bottom cover 3215 is integrally formed with the base assembly 13; or the bottom cover 3215 is detachably connected to the base assembly 13, thereby enabling the bottom noise reduction component 321 to be assembled on the base assembly 13.

[0123] Optionally, in an embodiment of the present invention, the bottom wall of the mounting cavity 102 is provided with a plurality of exhaust holes 131 arranged around the bottom noise reduction member 321; that is, as shown in the figure. Figure 11 As shown, the base assembly 13 has multiple vent holes 131, which are arranged around the bottom noise reduction component 321. This arrangement ensures the connection between the bottom noise reduction component 321 and the base assembly 13, and also helps to dissipate heat from the mounting cavity 102, ensuring the normal operation of the electrical components within the mounting cavity 102 and improving their lifespan. However, in other embodiments, the vent holes 131 may also be located on the outer casing 11.

[0124] Please see Figure 15In one embodiment of the present invention, the side sound-absorbing hole 3222 of the side noise reduction component 322 is located below the heating component 20. It can be understood that the side noise reduction component 322 includes a side sound-absorbing cavity 3221 and a side sound-absorbing hole 3222 communicating with the side sound-absorbing cavity 3221. The sound-absorbing cavity includes the side sound-absorbing cavity 3221, and the sound-absorbing hole includes the side sound-absorbing hole 3222. That is, the relevant definitions of the side sound-absorbing cavity 3221 and the side sound-absorbing hole 3222 can all refer to the sound-absorbing cavity and sound-absorbing hole of the noise reduction structure 30. This allows the side noise reduction component 322 to simultaneously eliminate noise in different frequency bands, ensuring that the side noise reduction component 322 effectively eliminates noise in the mounting cavity 10. 2. Noise reduction effect of internal noise: In order to ensure the connection between the side sound absorption hole 3222 and the mounting cavity 102, since the side noise reduction component 322 is located on the outside of the heating component 20, the side sound absorption hole 3222 is located on the side of the side noise reduction component 322 and faces the heating component 20, so that the noise in the mounting cavity 102 enters the side sound absorption cavity 3221 through the side sound absorption hole 3222, and completes the absorption of noise by the side noise reduction component 322. The side sound absorption hole 3222 is located below the heating component 20. At this time, a transmission space is formed between the heating component 20 and the side sound absorption hole 3222, which facilitates the absorption of noise by the side noise reduction component 322.

[0125] The top wall of the mounting cavity 102 is provided with a boss structure 1121 that protrudes toward the bottom noise reduction component 321. When the heating component 20 is located on the boss structure 1121, the side noise reduction component 322 is at least partially surrounded on the outside of the heating component 20, so as to further shorten the path of noise to the side noise reduction component 322 and ensure that the side sound absorption hole 3222 is as close as possible to the noise area, thereby improving the noise reduction effect.

[0126] Furthermore, in another embodiment of the present invention, the side sound-absorbing hole 3222 of the side noise reduction component 322 is located on the side of the heating element 20 and is spaced apart from the heating element 20. It can be understood that since the side noise reduction component 322 is located on the outside of the heating element 20, and the side sound-absorbing hole 3222 is located on the side of the side noise reduction component 322 and faces the heating element 20, it ensures that the noise in the mounting cavity 102 enters the side sound-absorbing cavity 3221 through the side sound-absorbing hole 3222, thereby completing the side noise reduction. The noise absorption of component 322 is achieved by the side noise reduction component 322 being at least partially surrounding the outside of the heating component 20 and spaced apart from the boss structure 1121. At this time, the surface where the side sound absorption hole 3222 is located is spaced apart from the heating component 20, thus forming a transmission space. By placing the side sound absorption hole 3222 on the side of the heating component 20, that is, the side sound absorption hole 3222 and the heating component 20 can be set at the same height, the noise absorption of the side noise reduction component 322 can also be achieved.

[0127] Furthermore, multiple side sound-absorbing cavities 3221 and side sound-absorbing holes 3222 are provided. The side noise reduction component 322 also includes a side sound-absorbing tube 3223 disposed in the side sound-absorbing hole 3222, at least a portion of the side sound-absorbing tube 3223 protruding from the inner wall of the connected side sound-absorbing cavity 3221. The sound-absorbing tube includes the side sound-absorbing tube 3223, and the relevant definition of the side sound-absorbing tube 3223 can be referred to the sound-absorbing tube of the noise reduction structure 30. Furthermore, by providing the side sound-absorbing tube 3223, the frequency range of noise absorbed and eliminated by a single side sound-absorbing cavity 3221 can be changed, increasing the diversity of absorbed frequency range noise. With the side sound-absorbing tube 3223 inserted into the side sound-absorbing cavity 3221, the overall space occupied by the side noise reduction component 322 can be reduced.

[0128] Optionally, the side noise reduction component 322 is connected to at least one of the top wall and side wall of the mounting cavity 102, which can improve the connection strength between the side noise reduction component 322 and the device body 10, and also increase the selectivity of the installation position of the side noise reduction component 322. The top wall of the mounting cavity 102 can be a transverse partition 112 provided inside the outer shell 11. The transverse partition 112 is used to separate the atomizing cavity 101 and the mounting cavity 102, and can also be used to fix the heating element 20. The side wall of the mounting cavity 102 is the outer shell 11 of the device body 10.

[0129] Specifically, in an embodiment of the present invention, the side noise reduction component 322 extends along the cavity sidewall of the mounting cavity 102 and is connected to the cavity sidewall of the mounting cavity 102, so as to increase the noise reduction capability of the side noise reduction component 322 and enhance the assembly reliability of the side noise reduction component 322 by adapting to the cavity sidewall of the mounting cavity 102; and, within the space allowable by the mounting cavity 102, multiple side noise reduction components 322 can be provided at intervals along the cavity sidewall of the mounting cavity 102 to further ensure the complete elimination of noise within the mounting cavity 102; specifically, in one embodiment, the side noise reduction component 322 includes an annular The annular noise-reducing shell 3224 and two sealing plates 3225 are disposed on the upper and lower sides of the annular noise-reducing shell 3224. The annular noise-reducing shell 3224 and the two sealing plates 3225 are connected to form the plurality of side sound-absorbing cavities 3221. One side of the annular noise-reducing shell 3224 is connected to the cavity sidewall of the mounting cavity 102, and the other side is provided with the plurality of side sound-absorbing tubes 3223. The connection method between the annular noise-reducing shell 3224 and the cavity sidewall of the mounting cavity 102 includes, but is not limited to, bonding, fastening, and embedding. The connection method between the annular noise-reducing shell 3224 and the sealing plates 3225 includes, but is not limited to, bonding, fastening, embedding, and integrated setting. However, in other embodiments, the side noise reduction component 322 includes an annular noise reduction shell 3224 and two sealing plates 3225 disposed on the left and right sides of the annular noise reduction shell 3224. The annular noise reduction shell 3224 and the two sealing plates 3225 are connected to form the plurality of side sound absorption cavities 3221, and one sealing plate 3225 is connected to the cavity sidewall of the mounting cavity 102, and the other sealing plate 3225 is provided with a plurality of side sound absorption tubes 3223.

[0130] like Figure 18 As shown, due to the annular shape of the side noise reduction component 322, the side noise reduction component 322 also includes multiple partition plates 3226 that separate multiple side sound absorption cavities 3221. In the direction away from the heating element 20, that is, away from the side sound absorption holes 3222, the thickness of the partition plates 3226 gradually increases, which helps to enhance the overall structural strength of the side noise reduction component 322, ensure that each side sound absorption cavity 3221 can reliably absorb and eliminate noise in the corresponding frequency band, improve the service life of the water boiling equipment and user satisfaction.

[0131] Please see Figure 14 and Figure 18In an embodiment of the present invention, on the axial cross-section of the sound-absorbing hole of the second noise-reducing component 32, the depth of the sound-absorbing cavity of the second noise-reducing component 32 is greater than its radial length or circumferential length. The axial cross-section is the plane containing the axis of each sound-absorbing hole, which allows the cross-section of the sound-absorbing cavity of the second noise-reducing component 32 to be at least rectangular or trapezoidal in shape. Furthermore, while ensuring the noise reduction effect of the second noise-reducing component 32, the specific dimensions of the second noise-reducing component 32 are rationally designed to ensure its installation within the mounting cavity 102. When the second noise-reducing component 32 is a bottom noise-reducing component 321, the axial cross-section of the sound-absorbing hole is... Figure 14 The longitudinal section of the bottom noise reduction component 321 is shown. In this case, the depth of the bottom sound-absorbing cavity 3211 of the bottom noise reduction component 321 is greater than its lateral length (radial length). When the second noise reduction component 32 is a side noise reduction component 322, the axial section of the sound-absorbing hole is... Figure 18 The transverse cross-section of the side noise reduction component 322 shown is also the transverse cross-section of the device body 10. At this time, the depth of the side sound absorption cavity 3221 of the side noise reduction component 322 is greater than its transverse arc length (circumferential length).

[0132] Please see Figure 1 In an embodiment of the present invention, the water boiling device is configured as a humidifier. The water boiling device also includes a mist guide tube 15, which is disposed inside the device body 10 and surrounds the inner wall of the device body 10 to form a water storage cavity 105. The mist guide tube 15 is provided with an atomizing cavity 101, which is connected to the water storage cavity 105 through a water valve. The mist guide tube 15 is disposed corresponding to the heating element 20 and is sealed to the transverse partition 112 of the device body 10 to ensure that the heating element 20 can heat the water in the atomizing cavity 101 inside the mist guide tube 15. The water storage cavity 105 is arranged around the outer periphery of the mist guide tube 15, making reasonable use of the space around the mist guide tube 15 to achieve a compact design and facilitate the connection between the water storage cavity 105 and the atomizing cavity 101 to supply water to the atomizing cavity 101. In addition, the mist guide pipe 15 and the equipment body 10 can be integrated, for example, the mist guide pipe 15 can be welded to the horizontal partition 112; the mist guide pipe 15 and the equipment body 10 can be detachably connected, which facilitates processing and improves the convenience of disassembly and assembly.

[0133] The mist guide tube 15 has a mist guide section 151 that connects the atomizing chamber 101 and the mist passage 1042. The mist guide section 151 is gradually narrowed in the direction away from the atomizing chamber 101, which can gather hot mist to a certain extent and guide it to the mist passage 1042, reducing the impact of the sudden volume change from the atomizing chamber 101 to the mist passage 1042. At the same time, it increases the water storage capacity of the water storage chamber 105, which helps to reduce the frequency of water replenishment.

[0134] When the humidifier is working, the heating element 20 heats the liquid water in the atomizing chamber 101 until it boils and maintains the boiling state. The generated water vapor moves upward along the mist guide tube 15, and its direction of movement is changed by the obstruction of the mist outlet noise reduction element 312 above the mist outlet 14, and it flows out from the mist outlet 103, thereby humidifying the air. During this process, the noise mainly consists of the "humming" sound generated by the heating element 20 when it is heating in the mounting chamber 102 and the "gurgling" bubbling sound in the atomizing chamber 101 corresponding to the wall of the heating element 20 when boiling. The noise propagation path includes radiation outward along the mist outlet channel 104 and the mist outlet 103, and transmission along the mounting chamber 102 and the exhaust hole 131. The noise gradually increases in the first heating stage and reaches a peak at the initial boiling. After that, the noise decreases and enters a stable second heating stage, maintaining a certain noise level.

[0135] To address the bubbling sound of boiling water and the buzzing sound of the heating element 20 during operation, this invention provides a fog noise reduction element 311 at the fog passage 1042. The first sub-sound absorption hole 3112 of the fog noise reduction element 311 is connected to the fog passage 1042, which can create a local acoustic impedance change within the fog passage 1042, thereby absorbing and eliminating the bubbling sound and the buzzing sound.

[0136] In response to the high-frequency "humming" sound radiating outward along the fog exit channel 104, the present invention provides a fog exit noise reduction component 312 at the reversing passage 1043. The second sub-sound absorption hole 3122 of the fog exit noise reduction component 312 is connected to the reversing passage 1043, which can form a local acoustic impedance change in the reversing passage 1043 to absorb and eliminate noise. At the same time, it reliably isolates the outward propagation of noise in the corresponding frequency band.

[0137] To address the "gurgling" bubbling sound when water boils and the "humming" sound when the heating element 20 is working, the present invention provides a second noise reduction element 32 (side noise reduction element 322 and bottom noise reduction element 321) inside the mounting cavity 102. The sound absorption holes of the second noise reduction element 32 are connected to the mounting cavity 102, which can absorb and eliminate the "gurgling" bubbling sound and the "humming" sound.

[0138] As shown in the table below, under the second setting, compared to the original device, the water boiling device with the above-mentioned noise reduction structure 30 reduces the noise by 5.06 dBA in the first heating stage and by 3.86 dBA in the second heating stage; under the first setting, compared to the original device, the water boiling device with the above-mentioned noise reduction structure 30 reduces the noise by 3.27 dBA in the first heating stage and by 3.82 dBA in the second heating stage.

[0139] It should be noted that the first heating stage refers to the heating stage from the start of boiling water to the point of boiling, mainly the humming sound generated when the heating element 20 is heating in the mounting cavity 102; the second heating stage refers to the boiling stage of the water boiling equipment. The noise includes the humming sound generated when the heating element 20 is heating in the mounting cavity 102 and the "gurgling" bubbling sound corresponding to the wall of the heating element 20 in the atomizing cavity 101.

[0140] The heating power of the heating element 20 when the water boiling device is running at level 1 is less than that when it is running at level 2. The water evaporation rate in the atomizing chamber 101 is different when the water boiling device is running at different levels. As far as the humidifier is concerned, the humidification amount is different. The higher the level, the greater the humidification amount.

[0141] As can be seen, by setting up the aforementioned noise reduction components, the radiated noise during the operation of the water boiling device is completely eliminated, greatly reducing the radiated noise and improving user comfort. Specifically, for household appliances such as electric kettles, humidifiers, steamers, and garment steamers, users are near the product during use, and the noise level directly affects their living experience. The noise reduction structure 30 set up in this invention can continuously absorb sound from the start of boiling to boiling and during the boiling stage. Even if there is noise of different frequencies during this process, the design of the noise reduction structure 30 can simultaneously reduce noise of different frequency bands, greatly reducing the impact of noise on users and improving user comfort.

[0142]

[0143] The present invention also proposes a steam generator that can be applied to water boiling equipment, specifically humidifiers, irons, kettles, and other devices that generate hot mist.

[0144] Optionally, in an embodiment of the present invention, the steam generator has a mist outlet 103. The steam generator includes a steam generating chamber and a mist outlet channel 104 connecting the steam generating chamber and the mist outlet 103. A heating element 20 is disposed in the steam generating chamber. The steam generator also includes a noise reduction structure 30, which includes multiple sound-absorbing chambers and corresponding sound-absorbing holes connected to the sound-absorbing chambers. The sound-absorbing holes are located in the mist outlet channel 104, thus effectively preventing noise from radiating outward and reducing the noise during operation of the steam generator. The noise reduction structure 30 of the steam generator can refer to the noise reduction structure 30 in a water boiling device.

[0145] In the technical solution of the present invention, the steam generator generates noise during operation. The noise mainly consists of the high-frequency "humming" sound generated by the heating element 20 itself when it is working and the "bubbling" sound when the water boils. The noise propagates outward along the mist outlet channel 104 and the mist outlet 103. Therefore, by arranging a noise reduction structure 30 that connects to the mist outlet channel 104, and the sound absorption cavity of the noise reduction structure 30 being connected to the mist outlet channel 104 through the sound absorption hole, the radiated noise during operation of the steam generator can be eliminated in all directions, thereby reducing the radiated noise during operation of the steam generator.

[0146] Optionally, in an embodiment of the present invention, the noise reduction structure 30 further includes a sound-absorbing tube disposed at the sound-absorbing hole. In this case, the inner tube of the sound-absorbing tube is configured as the sound-absorbing hole of the noise reduction structure 30. The specific size of the sound-absorbing hole that connects to the noise reduction function can be changed by changing the diameter of the inner tube. Of course, the sound-absorbing tube can also be part of the cavity wall of the sound-absorbing cavity, that is, the sound-absorbing hole is formed in the sound-absorbing tube, and the thickness of the sound-absorbing tube in its axial direction is the same as the thickness of the cavity wall of the sound-absorbing cavity, which can be used to enhance the structural strength at this location.

[0147] Furthermore, in embodiments of the present invention, at least a portion of the sound-absorbing tube protrudes from the inner or outer wall of the sound-absorbing cavity. It is understood that the sound-absorbing tube can protrude from the outer wall of the sound-absorbing cavity and extend outwards. In this case, the sound-absorbing tube can be suspended within the cavity to be noise-reduced, or it can extend towards the cavity to be noise-reduced and penetrate the cavity wall, thus forming a sound-absorbing hole in the cavity wall. Alternatively, the sound-absorbing tube can protrude from the inner wall of the sound-absorbing cavity and be inserted into the sound-absorbing cavity. In this case, the sound-absorbing tube is suspended within the sound-absorbing cavity. In other words, the depth of the sound-absorbing hole is equal to the depth of the inner tube of the sound-absorbing tube, and the diameter of the sound-absorbing hole is equal to the diameter of the inner tube of the sound-absorbing tube. Furthermore, in a plurality of sound-absorbing holes on a noise-reducing structure 30, at least a portion of the sound-absorbing holes do not contain a sound-absorbing tube, or the sound-absorbing tube has the same thickness as the cavity wall of the sound-absorbing cavity. At least a portion of the sound-absorbing holes contain a sound-absorbing tube that extends outwards from the sound-absorbing cavity, and at least a portion of the sound-absorbing holes contain a sound-absorbing tube that is inserted into the sound-absorbing cavity.

[0148] The sound-absorbing tube protrudes from the inner or outer wall of the corresponding sound-absorbing cavity. This extension of the tube into the cavity reduces the overall volume of the noise reduction structure 30, improving its miniaturization. It also alters the volume of the sound-absorbing cavity, thereby changing the absorbed frequency band noise. The tube's extension facilitates communication between the cavity and the sound-absorbing holes, reducing the difficulty of communication caused by the cavity's distance from the noise-reducing chamber. It also improves the drainage efficiency of condensate within the cavity, reducing the possibility of the tube obstructing the condensate and enhancing the noise reduction effect of the structure 30 on the connected cavity. Furthermore, the tube can extend into and out of the cavity simultaneously, ensuring reliable assembly of the noise reduction structure 30 while maintaining communication between the sound-absorbing holes and the cavity. By changing the volume of the sound-absorbing cavity, the relationship between the sound-absorbing tube and the sound-absorbing cavity can be selectively set according to the installation position of the noise reduction structure 30 on the device body 10. Specifically, the extension length of the sound-absorbing tube can be 0 or it can protrude from the outer wall of the sound-absorbing cavity; the insertion depth of the sound-absorbing tube can be 0 or it can protrude from the inner wall of the sound-absorbing cavity; the sound-absorbing tube can also be set with one end protruding from the outer wall of the sound-absorbing cavity and the other end protruding from the inner wall of the sound-absorbing cavity. Furthermore, by adjusting parameters such as the cross-sectional area of ​​the sound-absorbing tube, the insertion depth of the sound-absorbing tube, the extension length, and the volume of the sound-absorbing cavity, impedance abrupt change or impedance adaptation can be achieved, so that the noise reduction structure 30 has different noise reduction capabilities. Thus, the acoustic impedance of the noise reduction structure 30 at the entrance of the sound-absorbing hole has abrupt change or impedance adaptation with the air acoustic impedance, achieving the purpose of sound insulation or full sound absorption.

[0149] The cavity connected to the sound-absorbing cavity is specifically the cavity to be noise-reduced that is connected to the noise reduction structure 30. Because the radial width of the sound-absorbing hole is much smaller than the radial width of the cavity connected to the sound-absorbing hole, a sudden change in width will occur at the connection between the sound-absorbing hole and the cavity connected to the sound-absorbing hole. Similarly, because the radial width of the sound-absorbing hole is much smaller than the radial width of the sound-absorbing cavity, a sudden change in width will occur at the connection between the sound-absorbing hole and the sound-absorbing cavity. The sudden change in width causes a sudden change in cross-section, resulting in a change in acoustic impedance. Furthermore, when steam flows through the cavity connected to the sound-absorbing hole, the steam flow rate will cause a change in acoustic impedance. Through the above structural design, when noise propagates upward through the cavity to be noise-reduced, the sound-absorbing cavity has a local impedance modulation effect on the cavity to be noise-reduced, preventing the noise from continuing to propagate downstream. Also, because the impedance of a portion of the sound-absorbing hole is matched with that of the cavity to be noise-reduced, all the noise enters the sound-absorbing hole and is converted into heat energy through molecular thermal motion, thereby achieving noise elimination.

[0150] Optionally, in embodiments of the present invention, at least some of the sound-absorbing holes have different depths; and / or, at least some of the sound-absorbing holes have different diameters; and / or, at least some of the sound-absorbing cavities have different cross-sectional areas; and / or, at least some of the sound-absorbing cavities have different cross-sectional shapes. Thus, by adjusting the parameters of the sound-absorbing holes and / or the parameters of the sound-absorbing cavities, a noise reduction structure 30 can simultaneously absorb and eliminate noise in multiple different frequency bands, achieving efficient noise elimination and improving the noise reduction effect.

[0151] Optionally, in embodiments of the present invention, the cross-sectional shape of the sound-absorbing cavity is any one of rectangle, triangle, trapezoid, or ring. That is, depending on the location of the noise reduction structure 30 and the frequency range of noise absorbed, the cross-sectional shape of the sound-absorbing cavity includes, but is not limited to, rectangle, triangle, trapezoid, and ring, so as to fully adapt to the installed structure, make reasonable use of the space inside the steam generator, ensure the noise reduction effect of the noise reduction structure 30, and improve the miniaturization level of the steam generator.

[0152] Optionally, in an embodiment of the present invention, in the longitudinal section of the fog outlet channel, the lateral width of the sound-absorbing cavity is greater than its longitudinal height; such as Figure 6 As shown, at this time, the lateral width of the sound-absorbing cavity in the longitudinal section of the mist outlet channel 104 is less than its longitudinal height. This allows the longitudinal cross-sectional shape of the sound-absorbing cavity to be at least rectangular or trapezoidal, thereby increasing the cross-sectional area of ​​the sound-absorbing cavity to a certain extent, improving the sound absorption characteristics of the noise reduction structure 30, and enhancing its noise reduction capability. The longitudinal direction of this longitudinal section specifically refers to the direction from the steam generating chamber to the mist outlet 103, which is the direction of mist flow. Of course, in other embodiments, the lateral height of the sound-absorbing cavity in the longitudinal section of the mist outlet channel 104 is less than its longitudinal height.

[0153] Optionally, in an embodiment of the present invention, the cross-sectional area of ​​the sound-absorbing hole is smaller than the cross-sectional area of ​​the sound-absorbing cavity. This smaller sound-absorbing hole increases the resistance to sound wave propagation, making it easier for the sound wave to rub and vibrate against the air inside the sound-absorbing cavity after entering, thereby converting sound energy into heat energy and achieving the sound absorption effect. It also extends the residence time of the sound wave inside the sound-absorbing cavity; for example, by increasing the propagation path and the number of reflections, they interact more fully to enhance the sound absorption effect.

[0154] Optionally, in an embodiment of the present invention, the cross-sectional area of ​​the mist outlet channel 104 is larger than the cross-sectional area of ​​the sound absorption hole. Thus, the mist outlet channel 104, as a sound energy containing cavity, has a larger cross-sectional area and can contain more sound energy, while the smaller sound absorption hole restricts the transmission of sound wave energy. Consequently, when the sound wave enters the sound absorption cavity from the mist outlet channel 104 through the sound absorption hole, the energy of the sound wave is concentrated due to the abrupt change in cross-sectional area, and a greater vibration is generated at the sound absorption hole. This helps to increase the friction between the sound wave and the air, thereby converting sound energy into heat energy, achieving effective sound energy attenuation, and achieving the effect of sound absorption.

[0155] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A water boiling device, characterized in that, include: The device body has an atomizing chamber and an installation chamber inside, and the device body also has a mist outlet that communicates with the atomizing chamber; A heating element is disposed in the mounting cavity. The heating element is used to heat the water in the atomizing cavity and to enable the water boiling device to have a first heating stage and a second heating stage. The second heating stage generates at least a first frequency band noise, and the first heating stage and / or the second heating stage also generate at least a second frequency band noise. A noise reduction structure is installed on the device body. The noise reduction structure includes multiple sound-absorbing cavities and multiple sound-absorbing holes corresponding to and connected to the sound-absorbing cavities. At least two of the sound-absorbing cavities are used to absorb noise in the first frequency band and noise in the second frequency band respectively. The sound-absorbing cavities are connected to the atomizing cavity or the mounting cavity through the sound-absorbing holes.

2. The water boiling device as described in claim 1, characterized in that, The noise reduction structure also includes a sound-absorbing tube disposed at the sound-absorbing hole, the sound-absorbing tube protruding from the inner wall or outer wall of the sound-absorbing cavity.

3. The water boiling device as described in claim 1, characterized in that, At least some of the sound-absorbing holes have different depths; And / or, at least some of the sound-absorbing holes have different apertures; And / or, at least some of the sound-absorbing cavities have different cross-sectional areas; And / or, at least some of the sound-absorbing cavities have different cross-sectional shapes; And / or, the cross-sectional shape of the sound-absorbing cavity is any one of rectangular, triangular, trapezoidal, or annular.

4. The water boiling device as described in claim 2, characterized in that, The device body also includes a mist outlet channel connecting the atomizing chamber and the mist outlet, and the noise reduction structure includes a first noise reduction component, wherein the sound absorption hole of the first noise reduction component is formed in the channel wall of the mist outlet channel.

5. The water boiling device as described in claim 4, characterized in that, The fog outlet channel includes a fog passage and a reversing passage. The reversing passage is connected above the fog passage and has the fog outlet. At least one of the fog passage and the reversing passage is connected to the first noise reduction component.

6. The water boiling device as described in claim 5, characterized in that, The first noise reduction device includes a fog noise reduction device disposed in the fog passage, the fog noise reduction device including a first sub-sound absorption cavity, a first sub-sound absorption hole formed in the channel wall of the fog passage, and a first sub-sound absorption tube communicating with the first sub-sound absorption hole.

7. The water boiling device as described in claim 6, characterized in that, In the longitudinal section of the water boiling device, the lateral width of the first sub-sound absorbing cavity is greater than its longitudinal height; And / or, multiple first sub-sound-absorbing tubes are provided, and a return port is formed between two adjacent first sub-sound-absorbing tubes. The device body includes a water storage cavity located below the mist noise reduction component, and the return port is connected to the water storage cavity.

8. The water boiling device as described in claim 5, characterized in that, The reversing passage has an upward opening, and the first noise reduction component includes a fogging noise reduction component disposed in the opening. The fogging noise reduction component includes a second sub-sound absorption cavity and a second sub-sound absorption hole disposed toward the reversing passage.

9. The water boiling device as described in claim 8, characterized in that, The second sub-sound-absorbing cavity and the second sub-sound-absorbing hole are provided in multiple ways. The fog-emitting noise reduction device also includes a second sub-sound-absorbing tube provided in the second sub-sound-absorbing hole, and at least a portion of the second sub-sound-absorbing tube protrudes from the outer wall of the second sub-sound-absorbing cavity it is connected to. And / or, in the longitudinal section of the water boiling device, the lateral width of the second sub-sound-absorbing cavity is less than its longitudinal height; And / or, the longitudinal projection of the fog passage is located on the fog exit noise reduction component.

10. The water boiling device as described in claim 5, characterized in that, In the longitudinal projection of the water boiling device, the mist passage and the mist outlet are misaligned.

11. The water boiling device as described in claim 2, characterized in that, The atomizing chamber is located above the mounting chamber, the heating element is disposed on the top wall of the mounting chamber, and the noise reduction structure includes at least one second noise reduction element, which is disposed in the mounting chamber and surrounds the heating element.

12. The water boiling device as described in claim 11, characterized in that, The second noise reduction component is provided in multiple ways, including a bottom noise reduction component disposed on the bottom wall of the mounting cavity and a side noise reduction component disposed on the outside of the heating element.

13. The water boiling device as described in claim 12, characterized in that, The bottom noise reduction component is located directly below the heating element, and the bottom sound absorption hole of the bottom noise reduction component faces the heating element; And / or, the bottom wall of the mounting cavity is provided with a plurality of exhaust holes arranged around the bottom noise reduction component; And / or, the side noise reduction component extends along the cavity sidewall of the mounting cavity and is connected to the cavity sidewall of the mounting cavity; And / or, the side sound-absorbing hole of the side noise reduction component is located below the heating element or the side sound-absorbing hole of the side noise reduction component is located on the side of the heating element and is spaced apart from the heating element; And / or, the sound-absorbing tube of the second noise-reducing element protrudes from the inner wall of the connected sound-absorbing cavity.

14. The water boiling device as described in claim 1, characterized in that, The water boiling device also includes a controller connected to the heating element, used to control the water boiling device to switch from the first heating stage to the second heating stage; And / or, the heating power corresponding to the first heating stage is greater than the heating power corresponding to the second heating stage.

15. The water boiling device as described in claim 1, characterized in that, The water boiling device is configured as a humidifier. The water boiling device also includes a mist guide pipe, which is located inside the device body and forms a water storage cavity with the inner wall of the device body. The mist guide pipe contains an atomizing cavity, and the atomizing cavity is connected to the water storage cavity through a water valve.

16. A steam generator, characterized in that, The steam generator has a mist outlet, and the steam generator includes a steam generating chamber and a mist outlet channel connecting the steam generating chamber and the mist outlet. A heating element is installed inside the steam generating chamber. The steam generator also includes a noise reduction structure, which includes multiple sound-absorbing chambers and corresponding sound-absorbing holes connected to the sound-absorbing chambers. The sound-absorbing holes are opened in the mist outlet channel.

17. The steam generator as claimed in claim 16, characterized in that, The noise reduction structure also includes a sound-absorbing tube, which is disposed at the sound-absorbing hole.

18. The steam generator as claimed in claim 17, characterized in that, At least a portion of the sound-absorbing tube protrudes from the inner or outer wall of the sound-absorbing cavity.

19. The steam generator as claimed in claim 16, characterized in that, At least some of the sound-absorbing holes have different depths; And / or, at least some of the sound-absorbing holes have different apertures; And / or, at least some of the sound-absorbing cavities have different cross-sectional areas; And / or, at least some of the sound-absorbing cavities have different cross-sectional shapes; And / or, the cross-sectional shape of the sound-absorbing cavity is any one of rectangular, triangular, trapezoidal, or annular.

20. The steam generator as claimed in claim 16, characterized in that, In the longitudinal section of the mist outlet channel, the transverse width of the sound absorption cavity is greater than its longitudinal height; And / or, the cross-sectional area of ​​the sound-absorbing hole is smaller than the cross-sectional area of ​​the sound-absorbing cavity; And / or, the cross-sectional area of ​​the mist outlet channel is greater than the cross-sectional area of ​​the sound absorption hole.

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