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 comprises a back shell, a net plate and a sound absorption part, the back shell is provided with a mounting groove and an outer air inlet structure communicating with the mounting groove, the sound absorption part is clamped between the net plate and the groove bottom face of the mounting groove, the front face of the sound absorption part is back to the groove bottom face of the mounting groove, and an air inlet space is reserved between the front face of the sound absorption part and an opening of the back shell; the outer air inlet structure is communicated with the air inlet space; a sliding groove is formed in the circumferential side of the back shell in the length direction of the back shell, an inserting part is arranged on the circumferential side of the screen plate corresponding to the sliding groove, and the screen plate and the back shell are inserted into the sliding groove through the inserting part and are fixedly connected through a fastener. The noise reduction assembly is arranged on the back face of the gas water heating equipment, noise generated in multiple positions during operation of the gas water heating equipment can be remarkably reduced, the use comfort of a user is improved, the net plate is fixedly installed on the back shell, and the assembling efficiency of the noise reduction assembly and the gas water heating equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot water supply equipment, in particular to a noise reduction component and a gas water heater. Background Art

[0002] A gas water heater is a device that uses gas as an energy source to heat water. It's widely used in homes, businesses, and industries to provide hot water. Common types of gas water heaters include gas water heaters and gas wall-mounted boilers.

[0003] In the prior art, such as Figure 1 and Figure 2 As shown, a gas water heater 3' is typically mounted on a 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 housing of the gas water heater 3'. Another portion is diffracted through the air inlet and air inlet duct of the gas water heater 3'. The noise diffracted from the air inlet duct is reflected by the wall 1', and the noise diffracted from the air inlet is directly transmitted to the user's ears after being reflected by the wall 1'. This results in relatively high noise levels around the gas water heater 3'. Utility Model Content

[0004] The first technical problem solved by the present invention 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 on 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 the present invention is to provide a gas water heater, which effectively solves the problem of excessive noise in existing gas water heaters, can significantly reduce the noise generated by the gas water heater during operation, and improve user comfort.

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

[0007] A noise reduction assembly for a gas water heater, comprising:

[0008] A mesh plate, a sound absorbing member and a back shell, the back shell having a mounting groove and an external air inlet structure connected to the mounting groove; the sound absorbing member is clamped between the mesh plate and the bottom surface of the mounting groove, the front surface of the sound absorbing member faces away from the bottom surface of the mounting groove, an air inlet space is left between the front surface of the sound absorbing member and the opening of the back shell, and the external air inlet structure is connected to the air inlet space; a slide groove is provided on the circumferential side of the back shell along its length direction, an insertion portion is provided on the circumferential side of the mesh plate corresponding to the slide groove, the mesh plate and the back shell are inserted into the slide groove through the insertion portion and fixed with fasteners to achieve connection.

[0009] Compared to the prior art, the noise reduction assembly described in this utility model has the following advantages: the sound-absorbing component is clamped between the mesh and the back shell. For example, when using a gas water heater, this noise reduction assembly effectively secures the sound-absorbing component while also ensuring the mesh structure does not affect the sound absorption of the component. The back shell covers the air inlet on the back of the gas water heater, thereby trapping any noise leaking from the air inlet. In addition, the sound-absorbing component is clamped between the mesh plate and the bottom surface of the installation groove, and an air intake space is left between the front of the sound-absorbing component and the opening of the back shell, and the external air inlet structure is connected with the air intake space. In this way, the sound-absorbing component and the mesh plate are installed on the back of the gas water heater through the back shell, and the mesh plate and the back of the gas water heater are spaced apart. The interval forms an air intake channel. Since the air intake channel is connected with the air inlet of the gas water heater, when the gas water heater is running, outside air enters the air intake channel from the external air intake structure and enters the air inlet of the gas water heater along the air intake channel. It can not only take away part of the heat on the back of the gas water heater to moderately cool it down, but also since the sound-absorbing component is arranged in the air intake channel, the noise generated when the outside air circulates in the air intake channel can be absorbed by the sound-absorbing component, thereby reducing the noise caused by the outside air entering the air intake channel.

[0010] In addition, some of the noise generated by the fan and water pump within the gas water heater is diffracted through the gas water heater's air inlet. Since the air inlet is connected to the air inlet duct and a sound-absorbing member is provided within the air inlet duct, the diffracted noise directly enters the sound-absorbing member and is absorbed by the member after multiple refractions, thereby reducing the noise leaking from the air inlet. Furthermore, when assembling the noise reduction assembly, only the insertion portion of the mesh plate needs to be inserted into the chute of the back shell and the mesh plate and back shell connected via fasteners. This makes installation between the mesh plate and back shell simple and quick, reducing the difficulty of installation while ensuring a secure connection between the mesh plate and back shell, improving the stability and durability of the overall structure. Even if vibration or minor external collisions occur during operation of the equipment, it is unlikely to shift or fall off, thereby extending the service life of the product. By connecting the back shell to the mesh plate, the mesh plate, back shell, and sound-absorbing member can be pre-assembled into a single assembly. During installation of the noise reduction assembly, only the back shell needs to be installed on the gas water heater, significantly reducing the number of assembly steps on the final assembly line, simplifying line operations, and improving installation efficiency.

[0011] At the same time, when the sound-absorbing component uses sound-absorbing cotton, the clamping structure formed by the mesh plate and the back shell can exert a certain pressure on the two sides of the sound-absorbing cotton to ensure that the distance from the side of the sound-absorbing cotton to the back of the gas water heater is constant, ensuring that the sound-absorbing cotton will not be deformed during long-term use, and will not compress or block the air inlet channel, thereby ensuring the air intake effect and noise reduction effect of the air inlet channel.

[0012] In summary, it can be seen that setting the noise reduction component on the back of the gas water heater can significantly reduce the multiple noises generated during the operation of the gas water heater. At the same time, the sound-absorbing parts are not easy to deform, which ensures the smooth flow of the air inlet channel and improves the user's comfort. The mesh plate is fixedly installed on the back shell, which improves the assembly efficiency of the noise reduction component and the gas water heater.

[0013] In one embodiment, the top of the back shell and the two sides adjacent to the top are provided with bent flanges, and a distance is left between the bent flanges and the back shell to form the sliding groove.

[0014] In one embodiment, the circumferential side of the back shell is provided with a plurality of through holes passing through the bent flange and the back shell, the insertion portion is provided with assembly holes arranged one-to-one corresponding to the through holes, and the mesh plate and the back shell are connected by fasteners passing through the through holes and the assembly holes.

[0015] In one embodiment, the diameter of the through hole on the back shell is larger than the diameter of the through hole on the bent flange and the diameter of the assembly hole, and the diameter of the through hole on the back shell is larger than the diameter of the mounting end of the fastener.

[0016] In one embodiment, the mounting end of the fastener abuts against a side surface of the insertion portion, and the other side surface of the insertion portion abuts against an inner wall of the bent flange.

[0017] In one embodiment, a support portion is provided at the bottom of the mesh plate and is bent toward the bottom surface of the mounting groove, and the support portion abuts against the bottom surface of the sound absorbing component.

[0018] The second technical problem mentioned above is solved by the following technical solution:

[0019] A gas water heater, comprising:

[0020] The shell has an air inlet on the back;

[0021] Noise reduction component, the back shell is installed on the back of the shell and covers the air inlet, an air inlet channel is left between the mesh plate and the back of the shell, the air inlet is connected with the external air inlet structure through the air inlet channel, and the covering area of the back shell is smaller than the back area of the shell.

[0022] Compared with the background art, the gas water heater described in the present invention has the following beneficial effects: the gas water heater equipped with the noise reduction assembly has a significant noise reduction effect compared to the existing gas water heater. The back shell is directly fixed to the back of the shell, and a gap is left between the mesh plate and the back of the shell. The gap forms an air inlet channel, which is connected to the external air inlet structure and the air inlet, respectively, thereby completing the installation of the entire noise reduction assembly. The clamping structure formed by the mesh plate and the back shell can apply a certain pressure to the two sides of the sound absorbing member to ensure that the sound absorbing member is not easily deformed, thereby ensuring the air intake effect and noise reduction effect of the air inlet channel. Because the coverage area of the back shell is smaller than the back area of the shell, the amount of material used in the mesh plate, the sound absorbing member, and the back shell during the manufacturing process of the noise reduction assembly is relatively small, so that the noise reduction assembly can achieve both noise reduction and reduced production costs.

[0023] In one embodiment, the distribution width of the air inlet is adapted to the width of the back of the shell, the width of the back shell is adapted to the width of the back of the shell, and the length of the back shell is smaller than the length of the back of the shell.

[0024] In one embodiment, the distribution width of the air inlet is smaller than the width of the back of the shell, the width of the back shell is smaller than the width of the back of the shell, and the length of the back shell is adapted to the length of the back of the shell.

[0025] In one embodiment, the back shell is provided with a plurality of through holes passing through the back shell on its circumferential side, and the shell is provided with mounting holes corresponding to the through holes one by one. The back shell and the shell are detachably connected by fasteners which are passed through the mounting holes and the through holes and are threadedly engaged with the mounting holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a structural diagram and noise distribution diagram of a gas water heater installed on a wall in the prior art;

[0028] Figure 2 A cross-sectional view and noise distribution diagram of a gas water heater installed on a wall in the prior art;

[0029] Figure 3 This is a structural diagram of a noise reduction component installed on a gas water heater according to an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of an explosion in which a noise reduction assembly according to an embodiment of the present utility model is installed on a gas water heater;

[0031] Figure 5 This is a structural diagram of another noise reduction component installed on a gas water heater according to an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of an explosion in which another noise reduction assembly according to an embodiment of the present invention is installed on a gas water heater;

[0033] Figure 7 for Figure 5 A cross-sectional view of the noise reduction assembly shown installed on a gas water heater;

[0034] Figure 8 for Figure 7 A partial enlarged view of part A;

[0035] Figure 9 This is a structural schematic diagram of a noise reduction component according to an embodiment of the present utility model;

[0036] Figure 10 This is a structural schematic diagram of a noise reduction component from another perspective of an embodiment of the present utility model;

[0037] Figure 11 for Figure 10 A partial enlarged view of part B;

[0038] Figure 12 This is a bottom view of a noise reduction assembly according to an embodiment of the present utility model;

[0039] Figure 13 for Figure 12 A partial enlarged view of part C in the middle;

[0040] Figure 14 This is a structural diagram of a mesh plate in a noise reduction assembly according to an embodiment of the present invention;

[0041] Figure 15 This is a schematic structural diagram of a back shell in a noise reduction component according to an embodiment of the present utility model.

[0042] Description of reference numerals:

[0043] Prior art reference numerals:

[0044] 1', wall; 3', gas water heating equipment.

[0045] The utility model is marked with the following reference numerals:

[0046] 1. Mesh plate; 101. Insertion part; 1011. Assembly hole; 102. Strip hole; 103. Support part; 2. Sound absorbing part; 3. Gas water heater; 301. Shell; 3011. Air inlet; 4. Back shell; 401. Installation groove; 402. External air inlet structure; 403. Slide groove; 404. Bending flange; 405. Through hole; 406. Opening; 5. Installation hole; 7. Air inlet channel; 8. Fastener; 801. Installation end. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0048] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0049] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0051] In related technologies, such as Figure 1 and Figure 2As shown, a gas water heater 3' is typically mounted on a 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 housing of the gas water heater 3'. Another portion is diffracted through the air inlet and air inlet duct of the gas water heater 3'. The noise diffracted from the air inlet duct is reflected by the wall 1', and the noise diffracted from the air inlet is directly transmitted to the user's ears after being reflected by the wall 1'. This results in relatively high noise levels around the gas water heater 3'.

[0052] It should be noted that the main noise sources of the gas water heater 3' are the combustion system and the fan system noise. The noise frequency is concentrated in the low and medium frequencies of 300-1000 Hz. The noise sound waves are long and have strong diffraction ability. There is also high-frequency noise above 1000 Hz.

[0053] The interior of the shell of the gas water heater 3' is a reverberant sound field, with the sound energy density at each position approaching to be equal. The six walls of the shell of the gas water heater 3' all radiate noise outward. Setting a cover on the back of the gas water heater 3' can change the direction of noise propagation to a certain extent, but it cannot effectively attenuate the noise energy, because the noise diffracted from the air inlet of the gas water heater 3' is transmitted in the form of a plane wave within the back cover (the cross section of which is a rectangular channel). The amplitude of the plane wave does not decay as the rectangular channel is extended. Therefore, no matter how long the conventional sound channel is, the sound waves diffracted from the air inlet can be diffracted from the external air inlet structure without attenuation. The reason why the conventional sound channel bottom shell has a "noise reduction effect" is because it changes the diffraction direction of the noise. Even if the amount of noise reflected forward by the wall is reduced, the wall still has a large reflection effect on the leakage noise at the external air inlet structure.

[0054] In order to solve the above technical problems, the following Figures 3 to 15 , describing the embodiments of the present utility model.

[0055] According to an embodiment of the present invention, on one hand, a noise reduction component is provided, which is used for a gas water heater 3 to reduce the noise of the gas water heater 3 .

[0056] The noise reduction component includes a back shell 4 , a mesh plate 1 and a sound absorbing component 2 .

[0057] Specifically, combined Figure 6 and Figure 7 As shown, the back shell 4 has a mounting groove 401 (as shown in FIG. Figure 15 As shown) and an external air inlet structure 402, the external air inlet structure 402 is connected to the installation groove 401.

[0058] Specifically, combined Figure 4 and Figure 6 As shown, the sound absorbing member 2 is clamped between the mesh plate 1 and the mounting groove 401 (as shown in FIG. Figure 15 between the bottom surfaces of the grooves shown).

[0059] Specifically, combined Figure 7 and Figure 8 As shown, an air inlet space is left between the front surface of the sound absorbing component 2 and the opening 406 of the back shell 4, and the external air inlet structure 402 is connected to the air inlet space.

[0060] Specifically, if Figures 9 to 15 As shown, a slide groove 403 is provided on the peripheral side of the back shell 4 along its length direction, and an insertion part 101 is provided on the peripheral side of the mesh plate 1. The insertion part 101 is arranged corresponding to the slide groove 403. The mesh plate 1 and the back shell 4 are inserted into the slide groove 403 through the insertion part 101 and fixed by the fastener 8 to achieve connection.

[0061] This noise reduction assembly clamps the sound-absorbing element 2 between the mesh panel 1 and the back shell 4. For example, when using a gas water heater 3, this assembly effectively secures the sound-absorbing element 2 while also ensuring the mesh panel 1's structure does not affect the sound absorption performance of the element 2. The back shell 4 covers the air inlet 3011 on the back of the gas water heater 3, trapping any noise leaking from the air inlet 3011. In addition, the sound-absorbing member 2 is clamped between the mesh plate 1 and the bottom surface of the mounting groove 401, and an air intake space is left between the front of the sound-absorbing member 2 and the opening 406 of the back shell 4, and the external air inlet structure 402 is connected to the air intake space. In this way, the sound-absorbing member 2 and the mesh plate 1 are installed on the back of the gas water heater 3 through the back shell 4, and the mesh plate 1 is spaced apart from the back of the gas water heater 3. The interval forms an air intake channel 7. Since the air intake channel 7 is connected to the air inlet 3011 of the gas water heater 3, when the gas water heater 3 is running, the outside air enters the air intake channel 7 from the external air intake structure 402, and enters the air inlet 3011 of the gas water heater 3 along the air intake channel 7. It can not only take away part of the heat on the back of the gas water heater 3 to moderately cool it down, but also since the sound-absorbing member 2 is arranged in the air intake channel 7, the noise generated when the outside air circulates in the air intake channel 7 can be absorbed by the sound-absorbing member 2, thereby reducing the noise caused by the outside air entering the air intake channel 7.

[0062] In addition, some of the noise generated by the fan and water pump in the gas water heater 3 is diffracted through the air inlet 3011 of the gas water heater 3. Since the air inlet 3011 is connected to the air inlet channel 7 and a sound absorbing member 2 is provided in the air inlet channel 7, the diffracted noise directly enters the sound absorbing member 2 and is absorbed by the sound absorbing member 2 after multiple refractions, thereby reducing the noise leaking from the air inlet 3011. In addition, when assembling the noise reduction assembly, it is only necessary to insert the insertion portion 101 of the mesh panel 1 into the slide groove 403 of the back shell 4 and connect the mesh panel 1 to the back shell 4 through the fastener 8. This makes the installation between the mesh panel 1 and the back shell 4 simple and quick, reduces the difficulty of installation of the mesh panel 1 and the back shell 4, and ensures a stable connection between the mesh panel 1 and the back shell 4, thereby improving the stability and durability of the overall structure. Even if vibration or slight external collision occurs during the operation of the equipment, it is not easy to cause displacement or falling off, thereby extending the service life of the product. By connecting the back shell 4 with the mesh panel 1, the mesh panel 1, the back shell 4 and the sound absorbing component 2 can be pre-assembled into a component in advance. During the installation of the noise reduction component, it is only necessary to install the back shell 4 on the gas water heater 3, which can greatly reduce the assembly steps on the final assembly line, simplify the assembly line operation, and improve the installation efficiency.

[0063] At the same time, when the sound-absorbing component 2 uses sound-absorbing cotton, the clamping structure formed by the mesh plate 1 and the back shell 4 can exert a certain pressure on the two sides of the sound-absorbing cotton to ensure that the distance from the side of the sound-absorbing cotton to the back of the gas water heater 3 is constant, ensuring that the sound-absorbing cotton will not be deformed during long-term use, and will not compress or block the air inlet channel 7, thereby ensuring the air intake effect and noise reduction effect of the air inlet channel 7.

[0064] In summary, it can be seen that arranging the noise reduction component on the back of the gas water heater 3 can significantly reduce the multiple noises generated during the operation of the gas water heater 3. At the same time, the sound-absorbing component 2 is not easy to deform, which ensures the smooth flow of the air inlet channel 7 and improves the user's comfort. The mesh plate 1 is fixedly installed on the back shell 4, which improves the assembly efficiency of the noise reduction component and the gas water heater 3.

[0065] It should be noted that the external air inlet structure 402 can be independently provided on the back shell 4 to form the external air inlet 3011 , or the external air inlet structure 402 and the back surface of the gas water heater 3 can be surrounded to form the external air inlet 3011 .

[0066] Specifically, the mesh plate 1 and the back shell 4 can be arranged in parallel or tilted. In the embodiment of the present application, no specific limitation is imposed on the positional relationship between the mesh plate 1 and the back shell 4.

[0067] Specifically, the mesh panel 1 has a plurality of through holes 405, allowing noise waves within the air inlet passage 7 to directly pass through the through holes 405 of the mesh panel 1 and enter the sound absorbing member 2, where they are then absorbed by the sound absorbing member 2. The through holes 405 of the mesh panel 1 can be configured in any existing shape, such as circular, square, or rectangular. In the present embodiment, the shape and arrangement of the through holes 405 of the mesh panel 1 are not specifically limited.

[0068] Specifically, the back shell 4 can be made of metal or plastic. In the embodiment of the present application, there is no specific limitation on the material of the back shell 4.

[0069] Specifically, the thickness and density of the sound absorbing member 2 can be adjusted according to the desired sound absorption effect. Similarly, the sound absorbing member 2 can be designed into a flat, wavy, or other specific shape, as long as an air inlet channel 7 is left between the sound absorbing member 2 and the back of the gas water heater 3. The size of the sound absorbing member 2 can be adapted to the back area of the gas water heater 3 to ensure the sound absorption and noise reduction effect of the sound absorbing member 2. In the embodiments of the present application, there is no specific limitation on the thickness and shape of the sound absorbing member 2.

[0070] Specifically, the fastener 8 can be selected from existing connecting components such as clips, screws, and bolts. In the embodiment of the present application, there is no specific restriction on the type of the fastener 8.

[0071] Specifically, the slide groove 403 can use a linear guide groove, and the insertion part 101 is inserted into the slide groove 403. Under the guidance of the slide groove 403, the mesh plate 1 is inserted into the specified position of the slide groove 403, and then the position of the mesh plate 1 on the back shell 4 is pre-positioned, so that the mesh plate 1 and the back shell 4 can be fixed using fasteners 8 later.

[0072] In one embodiment, Figures 9 to 15 As shown, the top of the back shell 4 and the two sides adjacent to the top are provided with a bent flange 404, wherein a gap is left between the bent flange 404 and the back shell 4 to form a slide groove 403 (as shown in FIG. Figure 13 shown).

[0073] By providing the bent flanges 404 at the top and adjacent sides of the back shell 4, the structural strength of the back shell 4 is increased, thereby improving the structural stability of the entire assembly. Furthermore, a gap is left between the bent flanges 404 and the back shell 4, allowing the slide grooves 403 formed around the perimeter of the back shell 4 to be easily manufactured, eliminating the need for separate groove processing around the perimeter of the back shell 4. This results in a simpler structure and lowers costs.

[0074] Specifically, the plane where the bent flange 404 is located can be parallel to the plane where the periphery of the back shell 4 is located, so that the slide groove 403 formed between the bent flange 404 and the back shell 4 is a semi-closed long strip groove, so that the insertion part 101 can be inserted into the slide groove 403.

[0075] In one embodiment, Figures 9 to 15 As shown, the back shell 4 is provided with a plurality of through holes 405 on its circumference, each of which passes through the bent flange 404 and the back shell 4. The insertion portion 101 of the mesh panel 1 is provided with a plurality of assembly holes 1011, which correspond one to one with the through holes 405. The mesh panel 1 and the back shell 4 are connected by fasteners 8 that pass through the through holes 405 and the assembly holes 1011.

[0076] By passing fasteners 8 through through-holes 405 and assembly holes 1011, the connection between screen 1 and back shell 4 is more stable and reliable, improving the structural stability of the entire assembly and reducing loosening or deformation caused by vibration or external forces during use. The corresponding arrangement of assembly holes 1011 and through-holes 405 simplifies the assembly process, eliminating the need for complex tools, reducing assembly complexity, improving production efficiency, and reducing assembly errors.

[0077] Specifically, during the process of assembling the mesh panel 1 and the back shell 4, the insertion part 101 of the mesh panel 1 is inserted into the slide groove 403 of the back shell 4, and the mesh panel 1 is pushed to the specified position along the direction of the slide groove 403, so that the assembly hole 1011 on the mesh panel 1 corresponds to the position of the through hole 405 on the back shell 4. At this time, the installer can pass the fastener 8 through the coaxially arranged through hole 405 and the assembly hole 1011 to fix the mesh panel 1 and the back shell 4.

[0078] Specifically, the through hole 405 and the assembly hole 1011 can be set in any shape, such as a circular hole, a square hole, etc. In the embodiment of the present application, there is no specific limitation on the shapes of the through hole 405 and the assembly hole 1011.

[0079] Specifically, multiple through holes 405 can be evenly distributed on the circumference of the back shell 4, or can be unevenly distributed. The setting position and size of the through holes 405 can be adaptively set according to the structure of the back shell 4. In the embodiment of the present application, there is no specific restriction on the distribution method of the multiple through holes 405.

[0080] In one embodiment, Figures 11 to 13 As shown, the aperture of the through hole 405 on the back shell 4 is larger than the aperture of the through hole 405 on the bent flange 404, the aperture of the through hole 405 on the back shell 4 is larger than the aperture of the assembly hole 1011, and the aperture of the through hole 405 on the back shell 4 is larger than the diameter of the mounting end 801 of the fastener 8.

[0081] By making the diameter of the through hole 405 on the back shell 4 larger than the diameter of the through hole 405 on the bent flange 404 and the diameter of the assembly hole 1011, it can be ensured that the fastener 8 first passes through the through hole 405 with a larger diameter and then passes through the assembly hole 1011 with a smaller diameter during assembly, making it easier for the fastener 8 to align and pass through the through hole 405 and the assembly hole 1011 smoothly.

[0082] After the fastener 8 is installed through the through hole 405 and the assembly hole 1011, since the diameter of the through hole 405 on the back shell 4 is larger than the diameter of the mounting end 801 of the fastener 8, part of the mounting end 801 of the fastener 8 will extend into the through hole 405 on the back shell 4, avoiding the mounting end 801 of the fastener 8 from being too protruding on the surface of the back shell 4, thereby improving the appearance quality of the component.

[0083] Specifically, the aperture of the assembly hole 1011 and the aperture of the through hole 405 on the bent flange 404 are suitable for the fastener 8 to pass through. In the embodiment of the present application, no specific restrictions are imposed on the aperture of the assembly hole 1011 and the aperture of the through hole 405 on the bent flange 404.

[0084] Specifically, combined Figures 6 to 8 As shown, the sound absorbing member 2 is fixed on the bottom surface of the installation groove 401 by bonding.

[0085] The sound absorbing member 2 is fixed to the bottom surface of the mounting groove 401 by bonding, and the sound absorbing member 2 is installed in the mounting groove 401 of the back shell 4, so that the sound absorbing member 2 is firmly installed between the back shell 4 and the mesh plate 1, thereby improving the stability of the noise reduction component.

[0086] Specifically, the sound absorbing member 2 can be bonded to the bottom surface of the mounting groove 401 using an adhesive. For example, the adhesive can be double-sided tape, a high-temperature resistant or waterproof adhesive, or the like. The sound absorbing member 2 can also be bonded to the mesh plate 1 using hot melt adhesive or Velcro. In the embodiments of the present application, the bonding method of the sound absorbing member 2 is not specifically limited.

[0087] In one embodiment, Figure 12 and Figure 13 As shown, the mounting end 801 of the fastener 8 abuts against the side surface of the insertion portion 101 , and causes the other side surface of the insertion portion 101 to abut against the inner wall of the bent flange 404 .

[0088] By abutting the mounting end 801 of the fastener 8 against the side of the insertion part 101, and abutting the other side of the insertion part 101 against the inner wall of the bent flange 404, the mounting end 801 and the bent flange 404 clamp the two sides of the insertion part 101, ensuring that the connection between the fastener 8 and the insertion part 101 is more stable, improving the structural stability of the entire assembly, ensuring that the assembly will not loosen or fall off during use, and improving safety.

[0089] In one embodiment, Figure 9 、 Figure 10 and Figure 14 As shown, a support portion 103 is provided at the bottom of the mesh plate 1 , and the support portion 103 is bent toward the bottom surface of the mounting groove 401 , so that the support portion 103 abuts against the bottom surface of the sound absorbing member 2 .

[0090] By providing a bent support portion 103 at the bottom of the mesh plate 1, the support portion 103 supports the bottom of the sound absorbing member 2, thereby ensuring that the sound absorbing member 2 will not move or fall off due to vibration or external force during use, and ensuring that the sound absorbing member 2 is firmly fixed in the installation groove 401.

[0091] Specifically, the mesh plate 1 and the support portion 103 can be integrally formed, or the support portion 103 can be fixed to the bottom of the mesh plate 1 by welding. In the embodiment of the present application, there is no specific restriction on the connection method between the support portion 103 and the mesh plate 1.

[0092] Specifically, the support portion 103 may be provided in a long strip shape, or a plurality of support portions 103 may be provided at intervals at the bottom of the mesh plate 1 . In the embodiment of the present application, the shape and number of the support portions 103 are not specifically limited.

[0093] According to an embodiment of the present invention, on the other hand, Figures 3 to 11 As shown, a gas water heater 3 is also provided, comprising a housing 301 and a noise reduction component.

[0094] Specifically, if Figure 4 and Figure 6 As shown, an air inlet 3011 is provided on the back of the housing 301 .

[0095] Specifically, if Figure 7 and Figure 8 As shown, the back shell 4 of the noise reduction assembly is mounted on the back of the housing 301, and the back shell 4 covers the air inlet 3011. An air inlet channel 7 is left between the mesh plate 1 and the back of the housing 301. The external air inlet structure 402 and the back of the housing 301 form the external air inlet 3011, and the air inlet 3011 is connected to the external air inlet 3011 through the air inlet channel 7.

[0096] Specifically, if Figure 3 and Figure 5 As shown, the coverage area of the back shell 4 is smaller than the back area of the housing 301 .

[0097] It should be noted that the back side of the housing 301 refers to the side of the gas water heater 3 that contacts the wall. When the gas water heater 3 is installed, the back side is usually facing the wall, and the front side is facing the user.

[0098] This gas water heater 3, equipped with this noise reduction assembly, has a significantly greater noise reduction effect than existing gas water heaters 3. The back shell 4 is directly fixed to the back of the housing 301, and a gap is left between the mesh 1 and the back of the housing 301. This gap forms an air inlet channel 7, which is connected to the external air inlet structure 402 and the air inlet 3011, respectively, thereby completing the installation of the entire noise reduction assembly. The clamping structure formed by the mesh 1 and the back shell 4 can apply a certain amount of pressure to the two sides of the sound-absorbing member 2, ensuring that the sound-absorbing member 2 is not easily deformed, thereby ensuring the air intake and noise reduction effects of the air inlet channel 7. Because the coverage area of the back shell 4 is smaller than the back area of the housing 301, the mesh 1, the sound-absorbing member 2, and the back shell 4 are used in the manufacturing process of the noise reduction assembly. This allows the noise reduction assembly to achieve both noise reduction and reduced production costs.

[0099] It should be noted that the type of the gas water heater 3 can be a gas water heater, a gas wall-mounted boiler, etc. In the embodiment of the present application, there is no specific restriction on the type of the gas water heater 3.

[0100] Specifically, if Figure 10 As shown, the mesh panel 1 has multiple strip-shaped holes 102, the length of which is parallel to that of the mesh panel 1. The arrangement of these multiple strip-shaped holes 102 on the mesh panel 1 reduces the probability of noise waves within the air intake passage contacting the mesh panel 1, while increasing the probability of noise waves within the air intake passage contacting the sound-absorbing element 2. This improves the sound absorption effect and more effectively absorbs and reduces noise. Furthermore, the strip-shaped holes 102 provide additional rigidity to the mesh panel 1, enhancing the stability of the overall structure and reducing vibration and distortion.

[0101] Specifically, the strip-shaped hole 102 can be set to be rectangular, elliptical, etc. In the embodiment of the present application, the shape of the strip-shaped hole 102 is not specifically limited.

[0102] In one embodiment, Figure 5 and Figure 6 As shown, the distribution width of the air inlet 3011 is adapted to the width of the back of the shell 301 , the width of the back shell 4 is adapted to the width of the back of the shell 301 , and the length of the back shell 4 is less than the length of the back of the shell 301 .

[0103] Since the air inlets of different types of gas water heaters 3 are typically arranged along the width of the housing 301, matching the width of the back shell 4 to the width of the back of the housing 301 ensures that the back shell 4 can cover the air inlets of different types of gas water heaters 3, ensuring a noise reduction effect. The back shell 4 being shorter than the back of the housing 301 means more efficient use of materials, reducing raw material costs. Furthermore, the smaller back shell 4 reduces energy consumption and processing time during processing and manufacturing, further reducing production costs.

[0104] In one embodiment, Figure 3 and Figure 4 As shown, the distribution width of the air inlet 3011 is smaller than the back width of the shell 301 , the width of the back shell 4 is smaller than the back width of the shell 301 , and the length of the back shell 4 is adapted to the back length of the shell 301 .

[0105] Since there may be gas water heaters 3 on the market with the air inlet set on one side of the shell 301, the width of the back shell 4 is set to be smaller than the back width of the shell 301, while ensuring that the back shell 4 covers the air inlet, the material of the back shell 4 is reduced, thereby reducing production costs.

[0106] Since the length of the back shell 4 is adapted to the length of the back side of the shell 301, after the noise enters the air inlet channel 7 from the air inlet 3011, it needs to pass through a longer path in the air inlet channel 7 to reach the outer air inlet structure 402. Since the distance from the air inlet 3011 to the outer air inlet structure 402 of the noise sound waves in the air inlet channel 7 is longer, the number of reflections of the noise sound waves through the sound-absorbing component 2 in the air inlet channel 7 can be increased, thereby improving the noise absorption effect of the sound-absorbing component 2, effectively reducing the noise generated by the gas water heater 3 during operation, and reducing the impact of the noise on users.

[0107] Specifically, the width of the back shell 4 can be set to be smaller than the back width of the shell 301, and the length of the back shell 4 can be set to be smaller than the back length of the shell 301, so as to reduce the production cost of the noise reduction component.

[0108] In one embodiment, combined Figure 5 、 Figures 9 to 11 As shown, the shell 301 is provided with mounting holes 5 which are arranged in one-to-one correspondence with the through holes 405 , and the back shell 4 and the shell 301 are detachably connected by fasteners 8 which are passed through the mounting holes 5 and the through holes 405 and are threadedly engaged with the mounting holes 5 .

[0109] Since the mesh plate 1, the sound absorbing component 2 and the back shell 4 are assembled in advance, mounting holes 5 corresponding to the through holes 405 are provided on the shell 301. The back shell 4 is detachably set on the gas water heater 3 through fasteners 8 to facilitate the installation of the noise reduction component and the shell 301 and improve the installation efficiency.

[0110] The working principle of the gas water heater 3 in this embodiment is described as follows:

[0111] First, glue the sound absorbing component 2 into the mounting groove 401 of the back shell 4, insert the insertion part 101 of the mesh plate 1 into the slide groove 403 of the back shell 4, and install the noise reduction component on the shell 301 by passing the fastener 8 through the through hole 405, the assembly hole 1011 and the mounting hole 5 on the shell 301.

[0112] During the operation of the gas water heater 3, outside air can enter the air inlet channel 7 from the external air inlet structure 402, and enter the air inlet 3011 of the gas water heater 3 along the path of the air inlet channel 7, ensuring the internal air circulation of the gas water heater 3 and ensuring that the gas water heater 3 can fully burn.

[0113] During the operation of the gas water heater 3, part of the noise generated will be diffracted through the air inlet 3011 of the gas water heater 3. Since the air inlet 3011 of the gas water heater 3 is arranged on the upper side close to the air inlet channel 7, and the external air inlet structure 402 is arranged on the lower side close to the air inlet channel 7, after the noise enters the air inlet channel 7 from the air inlet 3011, it needs to pass through a longer path in the air inlet channel 7 to reach the external air inlet structure 402, which can increase the number of reflections of the noise waves through the sound-absorbing component 2 in the air inlet channel 7, thereby improving the noise absorption effect of the sound-absorbing component 2 and reducing the leakage of the internal noise of the gas water heater 3 from the external air inlet structure 402.

[0114] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0115] The specific contents of the above-mentioned specific embodiments only express several embodiments of the present invention. Although the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the appended claims.

Claims

1. A noise reduction component for a gas water heater (3), characterized in that: include: A mesh plate (1), a sound absorbing member (2) and a back shell (4), wherein the back shell (4) has a mounting groove (401) and an external air inlet structure (402) communicating with the mounting groove (401); the sound absorbing member (2) is sandwiched between the mesh plate (1) and the bottom surface of the mounting groove (401), the front surface of the sound absorbing member (2) faces away from the bottom surface of the mounting groove (401), and the front surface of the sound absorbing member (2) faces the bottom surface of the back shell (4). An air inlet space is left between the openings (406), and the external air inlet structure (402) is connected to the air inlet space; a sliding groove (403) is provided on the peripheral side of the back shell (4) along its length direction, and an insertion portion (101) is provided on the peripheral side of the mesh plate (1) corresponding to the sliding groove (403); the mesh plate (1) and the back shell (4) are inserted into the sliding groove (403) through the insertion portion (101) and fixed by a fastener (8) to achieve connection.

2. The noise reduction assembly according to claim 1, characterized in that: The top of the back shell (4) and the two sides adjacent to the top are provided with bent flanges (404), and a distance is left between the bent flanges (404) and the back shell (4) to form the sliding groove (403).

3. The noise reduction assembly according to claim 2, characterized in that: The circumferential side of the back shell (4) is provided with a plurality of through holes (405) penetrating the bent flange (404) and the back shell (4); the insertion portion (101) is provided with assembly holes (1011) arranged in a one-to-one correspondence with the through holes (405); the mesh plate (1) and the back shell (4) are connected by fasteners (8) passing through the through holes (405) and the assembly holes (1011).

4. The noise reduction assembly according to claim 3, characterized in that: The diameter of the through hole (405) located on the back shell (4) is larger than the diameter of the through hole (405) located on the bent flange (404) and the diameter of the assembly hole (1011), and the diameter of the through hole (405) located on the back shell (4) is larger than the diameter of the mounting end (801) of the fastener (8).

5. The noise reduction assembly according to claim 4, characterized in that: The mounting end (801) of the fastener (8) abuts against the side surface of the insertion portion (101), and the other side surface of the insertion portion (101) abuts against the inner wall of the bent flange (404).

6. The noise reduction assembly according to any one of claims 1 to 5, characterized in that: The bottom of the mesh plate (1) is provided with a support portion (103) bent toward the bottom surface of the mounting groove (401), and the support portion (103) abuts against the bottom surface of the sound absorbing member (2).

7. A gas water heater, characterized in that: include: The shell (301) has an air inlet (3011) on the back side; The noise reduction component according to any one of claims 1 to 6, wherein the back shell (4) is installed on the back of the shell (301) and covers the air inlet (3011), an air inlet channel (7) is left between the mesh plate (1) and the back of the shell (301), the air inlet (3011) is connected to the external air inlet structure (402) through the air inlet channel (7), and the coverage area of the back shell (4) is smaller than the back area of the shell (301).

8. The gas water heater according to claim 7, characterized in that: The distribution width of the air inlet (3011) is adapted to the width of the back of the shell (301), the width of the back shell (4) is adapted to the width of the back of the shell (301), and the length of the back shell (4) is less than the length of the back of the shell (301).

9. The gas water heater according to claim 7, characterized in that: The distribution width of the air inlet (3011) is smaller than the back width of the shell (301), the width of the back shell (4) is smaller than the back width of the shell (301), and the length of the back shell (4) is compatible with the length of the back of the shell (301).

10. The gas water heater according to any one of claims 7 to 9, characterized in that: The back shell (4) is provided with a plurality of through holes (405) penetrating the back shell (4) on its circumferential side, and the housing (301) is provided with mounting holes (5) arranged in a one-to-one correspondence with the through holes (405). The back shell (4) and the housing (301) are detachably connected by fasteners (8) passing through the mounting holes (5) and the through holes (405) and threadedly engaging with the mounting holes (5).

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