A water heater

By installing voice output and acquisition components in different chambers of the water heater and fixing them with covers and fasteners, the problem of interference between the voice output component and the acquisition component is solved, thus reducing the size and cost of the water heater.

CN224316423UActive Publication Date: 2026-06-02QINGDAO HAIER WISDOM ELECTRICAL EQUIP CO LTD +2

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGDAO HAIER WISDOM ELECTRICAL EQUIP CO LTD
Filing Date
2025-04-16
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

When installing a voice function module in existing water heaters, the voice output component can easily interfere with the voice acquisition component, affecting normal operation and increasing the size and cost of the water heater.

Method used

The voice output component is installed in the second chamber of the water heater, and the voice acquisition component is installed in the first chamber. They are located in different chambers and are fixed by covers and fasteners to avoid interference and improve sound quality.

Benefits of technology

This effectively avoids interference between the voice output component and the acquisition component, ensuring the normal operation of the voice function module and reducing the size and cost of the water heater.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of household appliance technology, and more particularly to a water heater. The water heater includes a shell and a voice function module. The shell has a first end and a second end extending along its length. A first chamber is disposed inside the first end, and a second chamber is disposed inside the second end. The voice function module includes a voice component, a voice acquisition component, and a voice output component. Both the voice acquisition component and the voice output component are communicatively connected to the voice component. The voice component is installed on the inner wall of the shell, the voice output component is installed in the second chamber, and the voice acquisition component is installed in the first chamber. This water heater increases the distance between the voice output component and the voice acquisition component, and the voice output component and the voice acquisition component are located in different chambers, avoiding interference between the voice output component and the voice acquisition component. Furthermore, this water heater does not require an additional protective cover to house the voice function module, reducing the size and cost of the water heater.
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Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a water heater. Background Technology

[0002] In existing technologies, water heaters are typically installed in high positions, making it difficult to control their functions via buttons. To facilitate control, related technologies often incorporate a voice control module, allowing users to control the water heater's functions by sending voice commands. However, this typically involves installing a protective cover over the water heater's casing, housing the various components of the voice control module within this cover. This arrangement places both the voice output and voice acquisition components within the same cover, making it susceptible to interference from the voice output, which can affect the module's proper operation. Furthermore, the additional protective cover significantly increases the size and cost of the water heater.

[0003] Therefore, there is an urgent need for a water heater to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a water heater that avoids interference between the voice output component and the voice acquisition component, ensures the normal operation of the voice function module, and also reduces the size and cost of the water heater.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A water heater, comprising:

[0007] A housing having a first end and a second end along its length, the first end having a first chamber inside, and the second end having a second chamber inside;

[0008] The voice function module includes a voice component, a voice acquisition component, and a voice output component. Both the voice acquisition component and the voice output component are communicatively connected to the voice component. The voice component is installed on the inner wall of the housing, the voice output component is installed in the second chamber, and the voice acquisition component is installed in the first chamber.

[0009] As an optional solution, the second end has a mounting hole, and the voice output component includes:

[0010] A voice output device, which is detachably installed on the cavity wall of the second chamber, and the voice output device is provided with a first sound outlet.

[0011] The cover is detachably sealed in the mounting hole. The cover has multiple spaced-apart second sound holes. The cover abuts against the voice output component and covers the first sound holes.

[0012] As an optional solution, the cover includes:

[0013] The sealing plate is detachably sealed in the mounting hole, and the sealing plate is provided with a plurality of spaced second sound outlet holes;

[0014] The sleeve portion has a first end fixedly connected to the sealing plate portion and the first end of the sleeve portion surrounds the outer periphery of a plurality of second sound outlet holes. The second end of the sleeve portion abuts against the voice output component and the second end of the sleeve portion surrounds the outer periphery of the first sound outlet hole.

[0015] As an optional solution, a first snap-fit ​​portion is provided on the cavity wall of the second chamber, and a second snap-fit ​​portion is provided on the cover, wherein the second snap-fit ​​portion is snapped and fixed with the first snap-fit ​​portion.

[0016] As an optional solution, the voice output component further includes:

[0017] The fastener has a connecting ear on the voice output component, and the fastener passes through the connecting ear and is threadedly connected to the cavity wall of the second chamber.

[0018] As an optional solution, the first end is provided with a receiving port. The voice acquisition component includes an elastic squeezing member and a voice acquisition member. The voice acquisition member is provided with a sound receiving part, and the sound receiving part is provided with a sound receiving hole that is directly opposite to the receiving port. The elastic squeezing member is inserted between the voice acquisition member and the cavity wall of the first chamber to press the voice acquisition member against the inner wall of the first end.

[0019] As an alternative, the elastic extruder is an extrusion sleeve, and the outer diameter of the extrusion sleeve gradually decreases along the insertion direction of the elastic extruder.

[0020] As an optional solution, one of the outer wall of the extrusion sleeve and the cavity wall of the first chamber is provided with a groove, and the other of the two is provided with a protrusion. The groove extends along the insertion direction of the elastic extruder, and the groove and the protrusion are slidably connected.

[0021] As an optional solution, the voice acquisition component further includes a buffer pad, which is sandwiched between the inner wall of the sound receiving part and the first end, and the buffer pad has a clearance hole that is directly opposite to the sound receiving hole.

[0022] As an optional solution, a third latching part is provided on the inner wall of the housing, and a fourth latching part is provided on the voice component, wherein the third latching part and the fourth latching part are latched and fixed together.

[0023] The beneficial effects of this utility model are:

[0024] This utility model provides a water heater comprising a shell and a voice function module. The shell has a first end and a second end extending along its length. A first chamber is disposed inside the first end, and a second chamber is disposed inside the second end. The voice function module includes a voice component, a voice acquisition component, and a voice output component. Both the voice acquisition component and the voice output component are communicatively connected to the voice component. The voice component is installed on the inner wall of the shell, the voice output component is installed in the second chamber, and the voice acquisition component is installed in the first chamber. The water heater provided by this utility model effectively increases the distance between the voice output component and the voice acquisition component by installing the voice output component in the second chamber of the second end and the voice acquisition component in the first chamber of the first end. Furthermore, the voice output component and the voice acquisition component are located in different chambers, avoiding interference between the voice output component and the voice acquisition component, ensuring the normal operation of the voice function module. Installing the voice output component in the second chamber of the second end also improves the sound quality of the voice output component. In addition, by installing all the components of the voice function module inside the shell, there is no need for an additional protective cover on the shell to house the voice function module, reducing the size and cost of the water heater. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the water heater provided in this embodiment of the utility model;

[0026] Figure 2 This is a first partial structural schematic diagram of the water heater provided in this embodiment of the utility model;

[0027] Figure 3 This is a first partial structural cross-sectional view of the water heater provided in this embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of a second partial structure of the water heater provided in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the elastic extrusion member provided in this embodiment of the utility model;

[0030] Figure 6 This is a second partial structural cross-sectional view of the water heater provided in this embodiment of the utility model.

[0031] In the picture:

[0032] 1. Housing; 11. Rear housing; 12. Front housing; 121. First end; 1211. First chamber; 12111. Slide groove; 1212. Receiving port; 122. Second end; 1221. Second chamber; 12211. First snap-fit ​​part; 1222. Mounting hole; 13. Third snap-fit ​​part;

[0033] 2. Voice function module; 21. Voice component; 211. Fourth snap-fit ​​part; 22. Voice acquisition component; 221. Elastic compression part; 2211. Protrusion; 222. Voice acquisition part; 2221. Receiver part; 22211. Receiver hole; 223. Buffer pad; 2231. Clearance hole; 23. Voice output component; 231. Voice output part; 2311. First sound outlet; 2312. Connecting ear; 232. Cover; 2321. Sealing plate part; 23211. Second sound outlet; 23212. Second snap-fit ​​part; 2322. Sleeve part. Detailed Implementation

[0034] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] Water heaters described in related technologies typically have an additional protective cover installed on the water heater casing. The various components of the voice function module are then installed inside this cover to facilitate voice control. However, this arrangement places both the voice output component and the voice acquisition component within the same cover. This makes it easy for the voice output component to interfere with the voice acquisition component, thus affecting the normal operation of the voice function module. Furthermore, installing an additional protective cover to house the voice function module significantly increases the size and cost of the water heater.

[0039] To solve the above problems, such as Figure 1 and Figure 2As shown, this embodiment provides a water heater, which includes a housing 1 and a voice function module 2. The housing 1 has a first end 121 and a second end 122 along its length. The first end 121 has a first chamber 1211 inside, and the second end 122 has a second chamber 1221 inside. The voice function module 2 includes a voice component 21, a voice acquisition component 22, and a voice output component 23. Both the voice acquisition component 22 and the voice output component 23 are communicatively connected to the voice component 21. The voice component 21 is installed on the inner wall of the housing 1, the voice output component 23 is installed in the second chamber 1221, and the voice acquisition component 22 is installed in the first chamber 1211. The water heater provided in this embodiment effectively increases the distance between the voice output component 23 and the voice acquisition component 22 by installing the voice output component 23 in the second chamber 1221 within the second end 122 and the voice acquisition component 22 in the first chamber 1211 within the first end 121. Furthermore, since the voice output component 23 and the voice acquisition component 22 are located in different chambers, interference between the voice output component 23 and the voice acquisition component 22 is avoided, ensuring the normal operation of the voice function module 2. Additionally, installing the voice output component 23 in the second chamber 1221 within the second end 122 also improves the sound effect of the voice output component 23. Moreover, by installing all the components in the voice function module 2 within the housing 1, there is no need to additionally install a protective cover on the housing 1 to accommodate the voice function module 2, reducing the size and cost of the water heater. It should be noted that the specific structure and working principle of the voice function module 2 for voice control are existing technologies and will not be described further here. Optionally, the water heater is an electric water heater. In other embodiments, the water heater can be a gas water heater. Optionally, in this embodiment, the voice acquisition component 22 can be a microphone component, the voice output component 23 can be a speaker component, and the voice component 21 can be a storage component or a recognition component.

[0040] Optionally, in this embodiment, the housing 1 includes a rear housing 11 and a front housing 12 that are fastened together, and the front housing 12 has a first end 121 and a second end 122 extending along its length. Optionally, in this embodiment, the voice component 21, the voice acquisition component 22, and the voice output component 23 in the voice function module 2 are all located inside the bottom of the front housing 12.

[0041] In this embodiment, as Figure 2 and Figure 3As shown, the second end 122 has a mounting hole 1222. The voice output assembly 23 includes a voice output component 231 and a cover 232. The voice output component 231 is detachably mounted on the cavity wall of the second chamber 1221. The voice output component 231 is provided with a first sound outlet 2311. The cover 232 is detachably sealed in the mounting hole 1222. The cover 232 has multiple spaced second sound outlets 23211. The cover 232 abuts against the voice output component 231 and covers the first sound outlet 2311. The above-mentioned structural design of the voice output assembly 23 ensures that the sound emitted by the voice output component 231 is emitted sequentially through the first sound outlet 2311 and the second sound outlet 23211, thus guaranteeing the sound effect of the voice output assembly 23. In addition, by covering the voice output component 231 with the cover 232, the protection of the voice output component 231 is effectively improved. Furthermore, the structural design of the aforementioned voice output component 23 facilitates the disassembly of the voice output component 231 and the housing 232 within the housing 1, making it convenient to repair or replace the voice output component 231 and the housing 232.

[0042] In this embodiment, the cover 232 includes a sealing plate portion 2321 and a sleeve portion 2322. The sealing plate portion 2321 is detachably sealed in the mounting hole 1222 and has a plurality of spaced-apart second sound outlet holes 23211. The first end of the sleeve portion 2322 is fixedly connected to the sealing plate portion 2321 and surrounds the outer periphery of the plurality of second sound outlet holes 23211. The second end of the sleeve portion 2322 abuts against the voice output component 231 and surrounds the outer periphery of the first sound outlet hole 2311. This arrangement ensures that the sound emitted by the voice output component 231 is emitted sequentially through the first sound outlet hole 2311, the sleeve portion 2322, and the second sound outlet holes 23211, further guaranteeing the sound effect of the voice output component 23. In addition, the structural design of the cover 232 effectively improves the protection of the first sound outlet 2311.

[0043] Optionally, such as Figure 3As shown, a first snap-fit ​​portion 12211 is provided on the cavity wall of the second chamber 1221, and a second snap-fit ​​portion 23212 is provided on the cover 232. The second snap-fit ​​portion 23212 is snapped and fixed to the first snap-fit ​​portion 12211. This arrangement enables the cover 232 to be detachably connected in the mounting hole 1222, and the cover 232 is fixed by snap-fit, resulting in a simple structure and convenient disassembly. Specifically, in this embodiment, the sealing plate portion 2321 is provided with a second snap-fit ​​portion 23212. Optionally, in this embodiment, the first snap-fit ​​portion 12211 is a snap-fit ​​protrusion, and the second snap-fit ​​portion 23212 is a snap-fit ​​tongue, thereby facilitating the snap-fit ​​fixing between the first snap-fit ​​portion 12211 and the second snap-fit ​​portion 23212. Optionally, the specific number of the second card connector 23212 and the first card connector 12211 can be adjusted according to the requirements, as long as multiple second card connectors 23212 and multiple first card connectors 12211 correspond one-to-one.

[0044] In this embodiment, as Figure 3 As shown, the voice output assembly 23 also includes a fastener (not shown in the figure). A connecting ear 2312 is provided on the voice output component 231, and the fastener passes through the connecting ear 2312 and is threadedly connected to the cavity wall of the second chamber 1221. This configuration enables a detachable connection of the voice output component 231 within the second chamber 1221, and the structure is simple and easy to disassemble. Furthermore, by providing the connecting ear 2312, the connection area between the voice output component 231 and the cavity wall of the second chamber 1221 is effectively increased, ensuring the stability of the voice output component 231 within the second chamber 1221. Optionally, the fastener is a bolt. Optionally, connecting ears 2312 are provided on both opposite sides of the voice output component 231, further ensuring the stability of the voice output component 231 within the second chamber 1221. Optionally, in this embodiment, a buffer pad (not shown in the figure) is provided on the connecting ear 2312, effectively mitigating vibration at the connection point of the voice output component 231 and achieving buffered fixation of the voice output component 231.

[0045] Optionally, in this embodiment, as Figure 4As shown, a third latching part 13 is provided on the inner wall of the housing 1, and a fourth latching part 211 is provided on the voice component 21. The third latching part 13 and the fourth latching part 211 are latched and fixed together. This arrangement enables a detachable connection of the voice component 21 to the inner wall of the housing 1, and the voice component 21 is installed and fixed by a latching mechanism, resulting in a simple structure and convenient disassembly. Optionally, in this embodiment, the third latching part 13 is in the form of a latch, and the fourth latching part 211 is a step or end face on the voice component 21. Optionally, the specific number of third latching parts 13 and fourth latching parts 211 can be adjusted according to requirements, as long as multiple third latching parts 13 and multiple fourth latching parts 211 correspond one-to-one. Optionally, in this embodiment, the voice component 21 and the voice acquisition component 22 are arranged adjacent to each other.

[0046] In this embodiment, as Figures 4-6 As shown, the first end 121 has a receiving port 1212. The voice acquisition component 22 includes an elastic pressing member 221 and a voice acquisition member 222. The voice acquisition member 222 is provided with a microphone 2221, and the microphone 2221 has a microphone hole 22211 that is directly opposite to the receiving port 1212. The elastic pressing member 221 is inserted between the voice acquisition member 222 and the cavity wall of the first chamber 1211 to press the voice acquisition member 222 against the inner wall of the first end 121. Voice commands issued by the user can be received by the voice acquisition member 222 through the receiving port 1212 and the microphone hole 22211 in sequence. Furthermore, the structural design of the aforementioned voice acquisition component 22 allows for the installation of the voice acquisition component 222 by inserting the elastic compression member 221 between the voice acquisition component 222 and the cavity wall of the first chamber 1211. Under the elastic compression force of the elastic compression member 221, the voice acquisition component 222 can be pressed against the inner wall of the first end 121, thereby achieving the installation of the voice acquisition component 222. When it is necessary to disassemble the voice acquisition component 222, the elastic compression member 221 can be pulled out between the voice acquisition component 222 and the cavity wall of the first chamber 1211, making disassembly and assembly convenient.

[0047] Optionally, in this embodiment, the elastic compression member 221 is a compression sleeve, and the outer diameter of the compression sleeve gradually decreases along the insertion direction of the elastic compression member 221. This arrangement allows the compression sleeve to gradually compress the voice acquisition member 222 when it is inserted between the voice acquisition member 222 and the cavity wall of the first chamber 1211, and also provides guidance for the insertion operation of the compression sleeve, facilitating the insertion. Furthermore, by designing the elastic compression member 221 as a compression sleeve, the elasticity of the elastic compression member 221 is ensured.

[0048] Optionally, in this embodiment, as Figure 5 and Figure 6As shown, one of the outer wall of the extrusion sleeve and the cavity wall of the first chamber 1211 is provided with a groove 12111, and the other is provided with a protrusion 2211. The groove 12111 extends along the insertion direction of the elastic extruder 221, and the groove 12111 and the protrusion 2211 are slidably connected. By providing the groove 12111 and the protrusion 2211, a guide is provided for the insertion and removal operation of the extrusion sleeve, further ensuring the convenience and reliability of the extrusion sleeve insertion. Optionally, in this embodiment, the outer wall of the extrusion sleeve is provided with a protrusion 2211, and the cavity wall of the first chamber 1211 is provided with a groove 12111. In other embodiments, the outer wall of the extrusion sleeve is provided with a groove 12111, and the cavity wall of the first chamber 1211 is provided with a protrusion 2211. Optionally, in this embodiment, the outer wall of the extrusion sleeve is provided with two protrusions 2211 at intervals, and the cavity wall of the first chamber 1211 is provided with two sliding grooves 12111 at intervals. The two protrusions 2211 and the two sliding grooves 12111 correspond one-to-one, further ensuring the convenience and reliability of the extrusion sleeve insertion.

[0049] In this embodiment, as Figure 4 and Figure 6 As shown, the voice acquisition component 22 also includes a buffer pad 223, which is sandwiched between the receiver 2221 and the inner wall of the first end 121. The buffer pad 223 has a clearance hole 2231 directly opposite the receiver hole 22211. By providing the buffer pad 223, the receiver 2221 is buffered and protected, preventing the inner wall of the first end 121 from causing compression damage to the receiver 2221. Furthermore, by providing the clearance hole 2231 directly opposite the receiver hole 22211 on the buffer pad 223, it is ensured that the user's voice commands can be received by the voice acquisition component 222 sequentially through the receiver port 1212, the clearance hole 2231, and the receiver hole 22211, thus ensuring the sound reception effect of the voice acquisition component 222. Optionally, the buffer pad 223 can be a rubber pad or a silicone pad.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A water heater, characterized in that, include: The housing (1) has a first end (121) and a second end (122) extending along its length. The first end (121) has a first chamber (1211) inside, and the second end (122) has a second chamber (1221) inside. The voice function module (2) includes a voice component (21), a voice acquisition component (22), and a voice output component (23). Both the voice acquisition component (22) and the voice output component (23) are communicatively connected to the voice component (21). The voice component (21) is installed on the inner wall of the housing (1), the voice output component (23) is installed in the second chamber (1221), and the voice acquisition component (22) is installed in the first chamber (1211).

2. The water heater according to claim 1, characterized in that, The second end (122) has a mounting hole (1222), and the voice output component (23) includes: A voice output device (231) is detachably installed on the cavity wall of the second chamber (1221), and a first sound outlet (2311) is provided on the voice output device (231). Cover (232), the cover (232) is detachably sealed in the mounting hole (1222), the cover (232) has a plurality of spaced second sound holes (23211), the cover (232) abuts against the voice output component (231) and covers the first sound hole (2311).

3. The water heater according to claim 2, characterized in that, The cover (232) includes: The sealing plate (2321) is detachably sealed in the mounting hole (1222), and the sealing plate (2321) has a plurality of spaced second sound outlet holes (23211); The sleeve portion (2322) has its first end fixedly connected to the sealing plate portion (2321) and the first end of the sleeve portion (2322) surrounds the outer periphery of a plurality of second sound outlet holes (23211). The second end of the sleeve portion (2322) abuts against the voice output component (231) and the second end of the sleeve portion (2322) surrounds the outer periphery of the first sound outlet hole (2311).

4. The water heater according to claim 2, characterized in that, The second chamber (1221) has a first snap-fit ​​part (12211) on its cavity wall, and the cover (232) has a second snap-fit ​​part (23212) on its cover. The second snap-fit ​​part (23212) is snapped and fixed to the first snap-fit ​​part (12211).

5. The water heater according to claim 2, characterized in that, The voice output component (23) also includes: The fastener has a connecting ear (2312) on the voice output component (231), and the fastener passes through the connecting ear (2312) and is threadedly connected to the cavity wall of the second chamber (1221).

6. The water heater according to any one of claims 1 to 5, characterized in that, The first end (121) is provided with a receiving port (1212). The voice acquisition component (22) includes an elastic squeezing member (221) and a voice acquisition member (222). The voice acquisition member (222) is provided with a sound receiving part (2221). The sound receiving part (2221) is provided with a sound receiving hole (22211) that is directly opposite to the receiving port (1212). The elastic squeezing member (221) is inserted between the voice acquisition member (222) and the cavity wall of the first chamber (1211) to press the voice acquisition member (222) against the inner wall of the first end (121).

7. The water heater according to claim 6, characterized in that, The elastic extrusion member (221) is an extrusion sleeve, and the outer diameter of the extrusion sleeve gradually decreases along the insertion direction of the elastic extrusion member (221).

8. The water heater according to claim 7, characterized in that, One of the outer wall of the extrusion sleeve and the cavity wall of the first chamber (1211) is provided with a groove (12111), and the other of the two is provided with a protrusion (2211). The groove (12111) extends along the insertion direction of the elastic extrusion member (221), and the groove (12111) and the protrusion (2211) are slidably connected.

9. The water heater according to claim 6, characterized in that, The voice acquisition component (22) further includes a buffer pad (223), which is sandwiched between the inner wall of the sound receiving part (2221) and the first end (121), and the buffer pad (223) has a clearance hole (2231) that is directly opposite to the sound receiving hole (22211).

10. The water heater according to any one of claims 1 to 5, characterized in that, The inner wall of the housing (1) is provided with a third snap-fit ​​part (13), and the voice component (21) is provided with a fourth snap-fit ​​part (211). The third snap-fit ​​part (13) and the fourth snap-fit ​​part (211) are snap-fitted and fixed together.