Noise reduction assembly and gas water heating equipment

Abstract

The utility model relates to the technical field of hot water supply equipment, and discloses a noise reduction assembly and gas water heating equipment. The noise reduction assembly is used for the gas water heating equipment and comprises a sound absorption column body and a mounting sleeve, the sound absorption column body is provided with an axial through hole, the mounting sleeve is arranged outside the sound absorption column body in a sleeving mode, and an air inlet and an air outlet which communicate with the axial through hole are formed in the two ends of the mounting sleeve correspondingly; the installation sleeve is provided with a connecting structure used for being fixedly installed on a shell of the gas water heating equipment. The noise reduction assembly is installed in the gas-fired water heating equipment, when the gas-fired water heating equipment operates, noise of an inner cavity of the gas-fired water heating equipment enters the axial through hole from the air outlet, noise sound waves enter the sound absorption column body, and multiple reflection and incidence processes are generated in the axial through hole; and most noise sound waves are absorbed by the sound absorption column bodies, so that the noise leaked from the air inlet is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hot water supply equipment technology, and in particular to a noise reduction component and a gas-fired hot water equipment. Background Technology

[0002] Gas-fired water heating equipment is a device that uses gas as an energy source to heat water. It is widely used in homes, businesses, and industries for supplying hot water. Common types of gas-fired water heating equipment include gas water heaters and gas-fired wall-hung boilers.

[0003] In existing technologies, such as Figure 1 and Figure 2 As shown, the gas water heater 3' is typically installed on the wall 1'. When the gas water heater 3' is in use, some of the noise inside the gas water heater 3' is transmitted through the casing of the gas water heater 3', and another part is diffracted out through the air inlet and air intake channel of the gas water heater 3' in sequence. The noise diffracted from the air intake channel is reflected by the wall 1', and the noise diffracted from the air inlet is directly transmitted to the user's ear after being reflected by the wall 1', resulting in relatively large peripheral noise of the gas water heater 3'. Utility Model Content

[0004] The first technical problem solved by this utility model is to provide a noise reduction component, which effectively solves the problem of excessive noise in existing gas water heaters. By installing the noise reduction component inside the gas water heater, the noise generated during operation of the gas water heater can be significantly reduced, thereby improving the user's comfort.

[0005] The second technical problem solved by this utility model is to provide a gas-fired water heater that effectively solves the problem of excessive noise in existing gas-fired water heaters, significantly reduces the noise generated during operation, and improves user comfort.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] A noise reduction component for a gas-fired water heater, comprising:

[0008] The sound-absorbing column is equipped with an axial through hole;

[0009] An installation sleeve is fitted onto the sound-absorbing column. The two ends of the installation sleeve form an air inlet and an air outlet that communicate with the axial through hole, respectively. The installation sleeve is provided with a connection structure for fixed installation with the housing of the gas-fired water heater.

[0010] Compared with the prior art, the noise reduction component of this utility model has the following advantages: The mounting sleeve is fitted onto the sound-absorbing column, thereby providing support for the sound-absorbing column. Taking a gas-fired water heater as an example, when using this noise reduction component, the mounting sleeve is fixedly installed on the gas-fired water heater housing through a connecting structure. The noise reduction component is installed inside the gas-fired water heater, with the air inlet of the mounting sleeve communicating with the rear opening of the gas-fired water heater, and the air outlet of the mounting sleeve communicating with the internal cavity of the gas-fired water heater. When the gas-fired water heater is running, outside air can enter from the opening to the air inlet, and then enter the cavity of the gas-fired water heater from the air outlet along the axial through hole. Due to the presence of the sound-absorbing column, the noise generated when outside air flows through the axial through hole can be absorbed by the sound-absorbing column, thereby reducing the noise caused by outside air entering the gas-fired water heater.

[0011] In addition, when some of the noise generated by the fan and water pump in the gas water heater leaks outward from the air inlet, the noise from the internal cavity of the gas water heater first enters the axial through hole from the air outlet. The noise wave is incident into the sound-absorbing column and undergoes multiple reflections and incident processes in the axial through hole, so that most of the noise wave is absorbed by the sound-absorbing column, thereby reducing the noise leakage from the air inlet.

[0012] In conclusion, installing this noise reduction component inside a gas-fired water heater can significantly reduce the noise generated during operation, decrease the noise transmitted to the user's ears, and improve the user's comfort.

[0013] In one embodiment, the outer surface of the sound-absorbing column is bonded to the inner surface of the mounting sleeve.

[0014] In one embodiment, the mounting sleeve includes a cylindrical body and an end cap disposed at one end of the cylindrical body. The end cap has a central hole communicating with the axial through hole, and the central hole forms the air outlet. The end of the sound-absorbing column abuts against the end cap.

[0015] In one embodiment, the diameter of the central hole matches the diameter of the axial through hole, and the length of the sound-absorbing column matches the length of the cylinder.

[0016] In one embodiment, a support mesh cylinder is further included, which passes through the axial through hole of the sound-absorbing column and abuts against the inner wall of the center hole of the end cap, so as to clamp the sound-absorbing column between the support mesh cylinder and the cylinder.

[0017] In one embodiment, the air inlet is formed at the end of the cylinder away from the end cap, one end of the supporting mesh cylinder extends out of the central hole, and the other end is flush with the air inlet.

[0018] In one embodiment, the connection structure includes a plurality of connecting ears located at one end of the cylinder away from the end cap and spaced apart along the outer side wall of the cylinder.

[0019] In one embodiment, the system further includes a base, which covers the air inlet and has connection holes corresponding to the connecting ears. The base is connected to the cylinder by fasteners passing through the connecting ears and the connection holes.

[0020] The base is also provided with an air inlet that communicates with the axial through hole. The air inlet is provided with a raised grille, which is inserted into the cylinder and abuts against the inner wall of the supporting mesh cylinder.

[0021] In one embodiment, the sound-absorbing column is sound-absorbing cotton, which is at least one of polyester fiber cotton, bicomponent cotton, or melamine cotton.

[0022] The second technical problem mentioned above is solved by the following technical solution:

[0023] A gas-fired water heater includes:

[0024] The housing has at least one opening on its back side;

[0025] A noise reduction component is disposed inside the housing. The mounting sleeve is fixedly installed on the housing through the connecting structure. The air outlet of the mounting sleeve is connected to the cavity of the housing, and the air inlet of the mounting sleeve is correspondingly provided and connected to the opening.

[0026] Compared with the prior art, the gas-fired water heater of this utility model has the following advantages: The gas-fired water heater equipped with this noise reduction component has a significantly better noise reduction effect than existing gas-fired water heaters. By installing the noise reduction component one-to-one with the openings, and fixing the mounting sleeve to the housing through a connecting structure, the air inlet of the mounting sleeve is connected to the back opening of the housing, and the air outlet of the mounting sleeve is connected to the internal cavity of the housing, thus completing the installation of the entire noise reduction component, which is convenient. Noise from inside the housing first enters the axial through hole through the air outlet. The noise waves are incident into the sound-absorbing column and undergo multiple reflections and incident processes within the axial through hole, causing most of the noise waves to be absorbed by the sound-absorbing column, reducing noise leakage from the air inlet and improving user comfort. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the structure and noise distribution of a gas-fired water heater installed on a wall in the prior art;

[0029] Figure 2 A cross-sectional view and noise distribution diagram of a gas-fired water heater installed on a wall in the prior art;

[0030] Figure 3 This is a schematic diagram of a noise reduction component installed on the housing of a gas-fired water heater according to an embodiment of the present invention;

[0031] Figure 4 This is a cross-sectional view of a noise reduction component installed on the housing of a gas-fired water heater according to an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of a noise reduction component according to an embodiment of the present utility model;

[0033] Figure 6 This is an exploded view of a noise reduction component according to an embodiment of the present utility model;

[0034] Figure 7 This is a cross-sectional view of a noise reduction component according to an embodiment of the present utility model;

[0035] Figure 8 for Figure 7 A magnified view of part A in the middle;

[0036] Figure 9 This is a schematic diagram of the structure of the mounting sleeve in a noise reduction component according to an embodiment of the present utility model;

[0037] Figure 10 This is a schematic diagram of the structure of a sound-absorbing column in a noise reduction component according to an embodiment of the present invention;

[0038] Figure 11 This is a schematic diagram of the base in a noise reduction component according to an embodiment of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] Prior art reference numerals:

[0041] 1' Wall; 3' Gas-fired water heater.

[0042] Reference numerals in the drawings of this utility model:

[0043] 1. Sound-absorbing column; 101. Axial through hole; 2. Mounting sleeve; 201. Air inlet; 202. Air outlet; 203. Column body; 204. End cap; 205. Connecting ear; 2051. Connecting hole; 3. Gas water heater; 301. Shell; 3011. Back plate; 30111. Opening; 3012. Front plate; 4. Support mesh cylinder; 5. Base; 501. Grille. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0045] In the description of this application, it should be understood that the terms "center", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In related technologies, such as Figure 1 and Figure 2 As shown, the gas water heater 3' is typically installed on the wall 1'. When the gas water heater 3' is in use, some of the noise inside the gas water heater 3' is transmitted through the casing of the gas water heater 3', and another part is diffracted out through the air inlet and air intake channel of the gas water heater 3' in sequence. The noise diffracted from the air intake channel is reflected by the wall 1', and the noise diffracted from the air inlet is directly transmitted to the user's ear after being reflected by the wall 1', resulting in relatively large peripheral noise of the gas water heater 3'.

[0048] It should be noted that the main noise sources of the gas-fired water heater 3' are the combustion system and the fan system. The noise frequency is concentrated in the low-to-medium frequency range of 300 to 1000 Hz. The noise sound waves are relatively long and have strong diffraction capabilities. There is also high-frequency noise above 1000 Hz.

[0049] The gas water heater 3' has a reverberant sound field inside its casing, with sound energy density approximately equal at all locations. All six walls of the casing radiate noise outwards. While a cover plate on the back of the gas water heater 3' can alter the direction of noise propagation to some extent, it cannot effectively attenuate noise energy. This is because the noise diffracted from the rectangular channel outlet of the gas water heater 3' is transmitted as a plane wave within the back cover plate (which has a rectangular channel cross-section). The amplitude of the plane wave does not attenuate with the length of the rectangular channel. Therefore, regardless of the length of the conventional sound channel, the sound waves diffracted from the rectangular channel outlet can be diffracted out of the rectangular channel inlet without attenuation. The reason the conventional sound channel's bottom shell has a "noise reduction effect" is because it changes the direction of noise diffraction. Even if the amount of noise reflected forward by the walls is reduced, the walls still have a significant reflection effect on leakage noise at the air inlet.

[0050] To solve the above technical problems, the following will be combined with... Figures 3 to 11 The following describes embodiments of the present invention.

[0051] According to an embodiment of the present invention, a noise reduction component is provided for a gas-fired water heater 3 to reduce the noise of the gas-fired water heater 3.

[0052] Among them, such as Figure 5 and Figure 6 As shown, the noise reduction component includes a sound-absorbing column 1 and a mounting sleeve 2.

[0053] Specifically, such as Figure 10 As shown, the sound-absorbing column 1 has an axial through hole 101.

[0054] Specifically, in combination Figure 5 and Figure 6 As shown, the mounting sleeve 2 is sleeved on the outside of the sound-absorbing column 1. The two ends of the mounting sleeve 2 form an air inlet 201 and an air outlet 202, respectively. Both the air inlet 201 and the air outlet 202 are connected to the axial through hole 101. The mounting sleeve 2 is provided with a connection structure for fixed installation with the housing of the gas water heater 3.

[0055] This noise reduction component uses a mounting sleeve 2 to support and limit the sound-absorbing column 1. Taking a gas water heater 3 as an example, when using this noise reduction component, it is installed inside the gas water heater 3, with the air inlet 201 of the mounting sleeve 2 connected to the rear opening 30111 of the gas water heater 3, and the air outlet 202 of the mounting sleeve 2 connected to the internal cavity of the gas water heater 3. When the gas water heater 3 is running, outside air can enter from the opening 30111 to the air inlet 201, and then enter the cavity of the gas water heater 3 from the air outlet 202 along the axial through hole 101. Due to the presence of the sound-absorbing column 1, the noise generated when outside air flows through the axial through hole 101 can be absorbed by the sound-absorbing column 1, thereby reducing the noise caused by outside air entering the gas water heater 3.

[0056] In addition, when some of the noise generated by the fan and water pump inside the gas water heater 3 leaks outward from the opening 30111, the noise from the internal cavity of the gas water heater 3 first enters the axial through hole 101 from the air outlet 202. The noise wave is incident into the sound-absorbing column 1 and undergoes multiple reflections and incident processes within the axial through hole 101, so that most of the noise wave is absorbed by the sound-absorbing column 1, thereby reducing the noise leaked from the air inlet 201.

[0057] In summary, installing this noise reduction component inside the gas water heater 3 can significantly reduce the noise generated during operation, minimizing noise transmitted to the user's ears and improving user comfort. Furthermore, since the noise reduction component is located inside the gas water heater 3, it does not occupy external space, avoiding the need for external accessories and reducing the overall footprint of the gas water heater 3, resulting in a simpler and more streamlined appearance.

[0058] Specifically, the shape of the mounting sleeve 2 can be adapted to match the shape of the opening 30111 on the back of the gas water heater 3. The mounting sleeve 2 can be made of metal or plastic. In this embodiment, no specific restrictions are placed on the structure and material of the mounting sleeve 2.

[0059] Similarly, the shape of the sound-absorbing column 1 is adapted to the shape of the internal cavity of the mounting sleeve 2 so that the mounting sleeve 2 can be fitted over the sound-absorbing column 1. For example, if the cavity inside the mounting sleeve 2 is cylindrical, the sound-absorbing column 1 can be cylindrical; if the cavity inside the mounting sleeve 2 is cuboid, the sound-absorbing column 1 can be cuboid. In this embodiment, the shapes of the sound-absorbing column 1 and the internal cavity of the mounting sleeve 2 are not specifically limited.

[0060] Specifically, the shape of the axial through hole 101 can be set to a cuboid, a cylinder, etc. The shape setting requirements of the axial through hole 101 can be set according to the noise reduction requirements of the corresponding gas water heater 3. In this embodiment, the shape of the axial through hole 101 is not specifically limited.

[0061] Specifically, the thickness and density of the sound-absorbing column 1 can be adjusted according to the desired sound absorption effect. In this embodiment, the thickness and density of the sound-absorbing column 1 are not specifically limited.

[0062] Specifically, the shapes of the air inlet 201 and the air outlet 202 can be set according to the shape of the axial through hole 101 to ensure that the gas water heater 3 can take in air normally. In this embodiment, the shapes of the air inlet 201 and the air outlet 202 are not specifically limited.

[0063] Specifically, the sound-absorbing column 1 can be fixed inside the mounting sleeve 2 by fasteners, or it can be fixed inside the mounting sleeve 2 by snap-fit, clamping or bonding. In this embodiment, no specific restrictions are placed on the connection method between the sound-absorbing column 1 and the mounting sleeve 2.

[0064] In one embodiment, such as Figures 5 to 7 As shown, the outer surface of the sound-absorbing column 1 is bonded to the inner surface of the mounting sleeve 2.

[0065] The sound-absorbing column 1 is fixed inside the mounting sleeve 2 by adhesive bonding, ensuring a stable connection between the sound-absorbing column 1 and the mounting sleeve 2. This guarantees the stability of the noise reduction component during the operation of the gas-fired water heater 3, preventing displacement or loosening caused by vibration or airflow impact, and maintaining the continuous effectiveness of the noise reduction effect. At the same time, the adhesive bonding method ensures that the outer surface of the sound-absorbing column 1 fits snugly against the inner surface of the mounting sleeve 2.

[0066] Adhesive bonding is simpler and faster than traditional mechanical bonding, reducing assembly time and production costs.

[0067] Specifically, the sound-absorbing column 1 can be bonded to the inner surface of the mounting sleeve 2 by hot melt adhesive, or by glue, double-sided tape, etc. In this embodiment, no specific limitation is made on the bonding method between the sound-absorbing column 1 and the mounting sleeve 2.

[0068] In one embodiment, such as Figure 7 and Figure 9As shown, the mounting sleeve 2 includes a cylindrical body 203 and an end cap 204. The end cap 204 is located at one end of the cylindrical body 203 and has a central hole that communicates with the axial through hole 101 of the sound-absorbing column 1. The central hole forms the air outlet 202 of the mounting sleeve 2. The end of the sound-absorbing column 1 abuts against the end cap 204.

[0069] An end cap 204 is provided at the air outlet 202 end of the mounting sleeve 2, so that the end cap 204 abuts against the end of the sound-absorbing column 1. This not only provides stable support for the sound-absorbing column 1, but also enhances the sealing between the mounting sleeve 2 and the sound-absorbing column 1, reducing air and sound wave leakage and further improving the noise reduction effect. When installing the sound-absorbing column 1, the sound-absorbing column 1 is inserted into the mounting sleeve 2, so that the end of the sound-absorbing column 1 abuts against the end cap 204. This completes the pre-positioning of the mounting sleeve 2 and the sound-absorbing column 1, so as to facilitate the subsequent bonding and fixing of the sound-absorbing column 1.

[0070] The central hole on the end cap 204 serves as the air outlet 202, forming a direct airflow channel with the axial through hole 101 of the sound-absorbing column 1. This ensures that noise waves can smoothly enter the interior of the sound-absorbing column 1, and after multiple reflections and absorptions, the noise is significantly reduced.

[0071] Specifically, the end cap 204 can be configured in any existing shape such as a circular ring or a square ring. Similarly, the central hole can be a through hole of any shape such as a circular hole or a square hole. In this embodiment, the shape of the end cap 204 and the central hole are not specifically limited.

[0072] For example, such as Figure 9 As shown, the cylinder 203 is cylindrical, and the end cap 204 is an annular cap located at the end of the cylinder 203.

[0073] In one embodiment, such as Figure 7 As shown, the diameter of the central hole matches the diameter of the axial through hole 101, and the length of the sound-absorbing column 1 matches the length of the cylinder 203.

[0074] The matching diameter of the central hole and the axial through hole 101 allows the end cap 204 to cover the end face of the sound-absorbing column 1, ensuring that the sound-absorbing column 1 is entirely placed inside the mounting sleeve 2, and preventing the end of the sound-absorbing column 1 from protruding from the mounting sleeve 2.

[0075] The matching of the length of the sound-absorbing column 1 with the length of the cylinder 203 ensures the stable installation of the sound-absorbing column 1 inside the cylinder 203, reduces shaking or displacement caused by length mismatch, enhances the stability and sealing of the structure, and further improves the acoustic performance of the noise reduction component.

[0076] In one embodiment, such as Figure 5 and Figure 7As shown, the noise reduction component also includes a support mesh cylinder 4, which is inserted into the axial through hole 101 of the sound-absorbing column 1. The support mesh cylinder 4 abuts against the inner wall of the center hole of the end cap 204, so that the support mesh hole clamps the sound-absorbing column 1 between the support mesh cylinder 4 and the cylinder 203.

[0077] The sound-absorbing column 1 is clamped between the support mesh cylinder 4 and the cylinder 203. The clamping structure formed by the support mesh cylinder 4 and the cylinder 203 can apply a certain pressure to both sides of the sound-absorbing column 1 to ensure that the hole spacing of the axial through hole 101 remains constant. This ensures that the sound-absorbing column 1 will not deform during long-term use, and will not compress or block the axial through hole 101, thus ensuring the air intake and noise reduction effects of the axial through hole 101.

[0078] The design of the inner wall of the support mesh cylinder 4 and the center hole of the end cap 204 simplifies the assembly process of the noise reduction components, ensures the precise positioning between the components, reduces the assembly difficulty, and also facilitates subsequent maintenance and cleaning, thus reducing maintenance costs.

[0079] Specifically, the mesh on the supporting mesh cylinder 4 can be set in any shape to ensure that noise waves can pass through the mesh and enter the sound-absorbing column 1. For example, the mesh can be set in the form of honeycomb holes, circular holes, elongated holes, etc. In this embodiment, the shape of the mesh is not specifically limited.

[0080] In one embodiment, such as Figure 5 and Figure 7 As shown, an air inlet 201 is formed at the end of the cylinder 203 away from the end cap 204. One end of the supporting mesh cylinder 4 extends out of the central hole, and the other end of the supporting mesh cylinder 4 is flush with the air inlet 201.

[0081] One end of the support mesh cylinder 4 extends out through a central hole, while the other end is flush with the air inlet 201. This ensures that the support mesh cylinder 4 can fully clamp the inner surface of the sound-absorbing column 1, guaranteeing a constant hole spacing in the axial through holes 101. Because one end of the support mesh cylinder 4 extends out through a central hole, it is easy to accurately insert the support mesh cylinder 4 into the axial through hole 101 of the sound-absorbing column 1, facilitating the installation and removal of the support mesh cylinder 4.

[0082] Specifically, the extension length of one end of the support mesh cylinder 4 extending out of the central hole can be set according to the size of the cavity inside the gas water heater 3. In this embodiment, the length of the support mesh cylinder 4 is not specifically limited.

[0083] In one embodiment, the connection structure further includes a plurality of connecting ears 205, which are disposed at one end of the cylinder 203 away from the end cap 204 and are spaced apart along the outer side wall of the cylinder 203.

[0084] By providing multiple connecting ears 205 on the outer wall of the cylinder 203, the installation of the mounting sleeve 2 only requires fixing the connecting ears 205 to the inner wall of the gas water heater 3, simplifying the installation process. The multiple connecting ears 205 provide multiple fixing points, ensuring the mounting sleeve 2 is securely fixed in the predetermined position of the gas water heater 3, preventing displacement or loosening due to equipment vibration, and improving the stability and reliability of the noise reduction components.

[0085] Specifically, the connecting ear 205 can be connected to the internal structure of the gas water heater 3 via bolts, clips, or other fixing devices, reducing installation time and difficulty and improving production efficiency. In this embodiment, no restrictions are placed on the structure of the connecting ear 205 or the connection method between the connecting ear 205 and the internal structure of the gas water heater 3.

[0086] Specifically, the multiple connecting ears 205 can be evenly spaced or non-uniformly spaced. In this embodiment, the distribution of the connecting ears 205 is not specifically limited.

[0087] In one embodiment, such as Figure 9 and Figure 11 As shown, the noise reduction component also includes a base 5, which covers the air inlet 201. The base 5 and the connecting ear 205 have corresponding connecting holes 2051. The base 5 is connected to the cylinder 203 by fasteners passing through the connecting ear 205 and the connecting hole 2051.

[0088] The base 5 is also provided with an air inlet, which is connected to the axial through hole 101. The air inlet is provided with a raised grille 501, which is inserted into the cylinder 203 so that the grille 501 abuts against the inner wall of the supporting mesh cylinder 4.

[0089] Since both the base 5 and the connecting ear 205 have connecting holes 2051, the base 5 is fixed to the air inlet 201 end of the mounting sleeve 2 by fasteners passing through the connecting holes 2051. The fasteners can achieve quick fixation and facilitate subsequent disassembly and maintenance.

[0090] The air inlet on the base 5 is connected to the axial through hole 101, ensuring that the airflow can smoothly enter the axial through hole 101 and guarantee that the gas water heater 3 is filled with air.

[0091] Because the air inlet is equipped with a raised grille 501, it can effectively prevent foreign objects from entering the axial through hole 101, avoiding performance degradation caused by foreign object blockage, and also protecting the internal structure of the noise reduction component from damage, thus extending the service life of the noise reduction component. The raised grille 501 abuts against the inner wall of the supporting mesh cylinder 4, causing the end of the sound-absorbing column 1 and the supporting mesh cylinder 4 near the air inlet 201 to be clamped by the cylinder 203 and the grille 501, thereby ensuring that the sound-absorbing column 1 and the supporting mesh cylinder 4 are firmly fixed within the mounting sleeve 2.

[0092] In one embodiment, the sound-absorbing column 1 is sound-absorbing cotton, which is made of one of the high-efficiency sound-absorbing materials, including polyester fiber cotton, bicomponent cotton, or melamine cotton.

[0093] The sound-absorbing column 1 is made of polyester fiber cotton, which has a good sound absorption effect and can effectively absorb mid-to-high frequency sound.

[0094] The sound-absorbing column 1 is made of two-component cotton, which can provide better structural stability. The combination of different densities helps to absorb sound over a wider frequency range and generally has good resistance to compression deformation, maintaining long-term sound absorption performance.

[0095] The sound-absorbing column 1 is made of melamine cotton, which is suitable for use in high-temperature environments and can provide good sound absorption, especially in the absorption of high-frequency noise.

[0096] Specifically, the material of the sound-absorbing column 1 can be customized according to the specific application environment and noise reduction requirements of the gas-fired water heater 3 to achieve the best sound absorption effect and durability. In this embodiment, no specific limitations are imposed on the material of the sound-absorbing column 1.

[0097] Specifically, two-component cotton can be made of polypropylene (PP) and polyethylene terephthalate (PET).

[0098] Of course, in other embodiments, the sound-absorbing column 1 can also be a porous sound-absorbing column structure.

[0099] According to an embodiment of the present invention, on the other hand, as... Figures 3 to 11 As shown, a gas-fired water heater is also provided, including a housing 301 and a noise reduction component.

[0100] Specifically, such as Figure 4 As shown, the back of the housing 301 has at least one opening 30111 and a plurality of connection holes 2051.

[0101] Specifically, such as Figures 3 to 6As shown, the noise reduction components are installed inside the housing 301, and the noise reduction components are set one-to-one with the openings 30111. The mounting sleeve 2 and the housing 301 are detachably connected by fasteners passing through the connecting holes 2051. The air outlet 202 of the mounting sleeve 2 is connected to the cavity of the housing 301, and the air inlet 201 of the mounting sleeve 2 is set and connected to the openings 30111.

[0102] It should be noted that the back of the housing 301 refers to the side of the gas water heater 3 that contacts the wall. When installing the gas water heater 3, the back usually faces the wall, while the front faces the user.

[0103] This gas-fired water heater, equipped with this noise reduction component, exhibits a significantly improved noise reduction effect compared to existing gas-fired water heaters. By installing the noise reduction component one-to-one with the opening 30111, and using fasteners inserted into the connection hole 2051 to install the mounting sleeve 2 onto the housing 301, the air inlet 201 of the mounting sleeve 2 connects to the rear opening 30111 of the housing 301, and the air outlet 202 of the mounting sleeve 2 connects to the internal cavity of the housing 301. This completes the installation of the entire noise reduction component, making installation convenient. Noise from inside the housing 301 first enters the axial through-hole 101 through the air outlet 202. The noise waves then enter the sound-absorbing column 1 and undergo multiple reflections and incident processes within the axial through-hole 101, resulting in the absorption of most of the noise waves by the sound-absorbing column 1. This reduces noise leakage from the air inlet 201 and improves user comfort.

[0104] It should be noted that the type of gas water heating equipment 3 can be a gas water heater, a gas wall-hung boiler, etc. In this embodiment of the application, no specific restrictions are placed on the type of gas water heating equipment 3.

[0105] For example, when installing noise reduction components, such as Figure 4 As shown, the air inlet 201 end of the mounting sleeve 2 can be installed on the back plate 3011 of the housing 301, and a certain gap is left between the air outlet 202 end of the mounting sleeve 2 and the front plate 3012 of the housing 301, so that the air outlet 202 is connected to the cavity of the housing 301.

[0106] Specifically, one or more noise reduction components can be installed inside the housing 301, depending on the air intake requirements of the gas water heater 3. In this embodiment, the number of noise reduction components is not specifically limited.

[0107] The working principle of the gas-fired water heater 3 in this embodiment is described as follows:

[0108] First, the sound-absorbing column 1 is glued to the inner surface of the mounting sleeve 2. Then, the support mesh tube 4 is inserted into the axial through hole 101 from the air outlet 202 end until the end of the support mesh tube 4 abuts against the base 5, completing the installation of the noise reduction component. Then, the noise reduction component is installed in the housing 301 by inserting fasteners through the connection holes 2051 of the connecting ear 205, the connection holes 2051 of the base 5, and the connection holes 2051 on the housing 301.

[0109] During the operation of the gas water heater 3, outside air can enter from the air inlet 30111 to the air inlet 201, and then enter the cavity of the gas water heater 3 from the air outlet 202 along the axial through hole 101, ensuring air circulation inside the gas water heater 3 and ensuring that the gas water heater 3 can burn completely.

[0110] During the operation of the gas-fired water heater 3, when some of the noise generated by the fan and water pump inside the gas-fired water heater 3 leaks outward from the air inlet 201, the internal noise of the gas-fired water heater 3 first enters the axial through hole 101 from the air outlet 202. The noise wave is incident into the sound-absorbing column 1 and undergoes multiple reflections and incident processes within the axial through hole 101, so that most of the noise wave is absorbed by the sound-absorbing column 1, thereby reducing the noise leaked from the air inlet 201.

[0111] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0112] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A noise reduction component for a gas-fired water heater (3), characterized in that, include: The sound-absorbing column (1) is provided with an axial through hole (101); The mounting sleeve (2) is fitted over the sound-absorbing column (1). The two ends of the mounting sleeve (2) form an air inlet (201) and an air outlet (202) that communicate with the axial through hole (101). The mounting sleeve (2) is provided with a connection structure for fixed installation with the housing of the gas-fired water heater (3).

2. The noise reduction component according to claim 1, characterized in that: The outer surface of the sound-absorbing column (1) is bonded to the inner surface of the mounting sleeve (2).

3. The noise reduction component according to claim 1, characterized in that: The mounting sleeve (2) includes a cylinder (203) and an end cap (204) located at one end of the cylinder (203). The end cap (204) has a central hole that communicates with the axial through hole (101). The central hole forms the air outlet (202). The end of the sound-absorbing column (1) abuts against the end cap (204).

4. The noise reduction component according to claim 3, characterized in that: The diameter of the central hole matches the diameter of the axial through hole (101), and the length of the sound-absorbing column (1) matches the length of the cylinder (203).

5. The noise reduction component according to claim 3, characterized in that: It also includes a support mesh cylinder (4), which passes through the axial through hole (101) of the sound-absorbing column (1) and abuts against the inner wall of the center hole of the end cap (204) to clamp the sound-absorbing column (1) between the support mesh cylinder (4) and the cylinder (203).

6. The noise reduction component according to claim 5, characterized in that: The air inlet (201) is formed at one end of the cylinder (203) away from the end cap (204), and one end of the supporting mesh cylinder (4) extends out of the central hole, while the other end is flush with the air inlet (201).

7. The noise reduction component according to claim 5, characterized in that: The connection structure includes a plurality of connecting ears (205), which are located at one end of the cylinder (203) away from the end cap (204) and spaced apart along the outer side wall of the cylinder (203).

8. The noise reduction component according to claim 7, characterized in that: It also includes a base (5), which covers the air inlet (201). The base (5) has connecting holes (2051) that correspond one-to-one with the connecting ears (205). The base (5) is connected to the cylinder (203) by fasteners passing through the connecting ears (205) and the connecting holes (2051). The base (5) is also provided with an air inlet that communicates with the axial through hole (101). The air inlet is provided with a raised grille (501). The grille (501) is inserted into the cylinder (203) and abuts against the inner wall of the supporting mesh cylinder (4).

9. The noise reduction component according to any one of claims 1 to 8, characterized in that: The sound-absorbing column (1) is sound-absorbing cotton, which is polyester fiber cotton, bicomponent cotton or melamine cotton.

10. A gas-fired hot water device, characterized in that, include: The housing (301) has at least one opening (30111) on its back side; The noise reduction component according to any one of claims 1 to 9, wherein the noise reduction component is disposed inside the housing (301), the mounting sleeve (2) is fixedly mounted on the housing (301) through the connecting structure, the air outlet (202) of the mounting sleeve (2) is connected to the cavity of the housing (301), and the air inlet (201) of the mounting sleeve (2) is correspondingly provided and connected to the opening (30111).

Images