Shell assembly and water heater

Abstract

The present invention proposes a shell assembly and a water heater. The shell assembly includes: a shell, the shell is provided with a mounting port; a cover body, the cover body is provided on the mounting port, and an air inlet is provided on the cover body; a connecting plate, the connecting plate is provided on the mounting port, and a vent is provided on the connecting plate; wherein the cover body is located on the outside of the shell. The shell assembly provided by the present application, by providing a cover body with an air inlet on the mounting port on the outside of the shell, enables the gas water heater to combine the ventilation structure with the cover body during operation, no longer taking in air from the rear air inlet, away from the noise source, with a longer noise transmission path and greater noise intensity attenuation, and the vent is separately provided from the air inlet, so that the air intake process becomes a secondary air intake, cutting off direct connection, further enhancing the noise reduction effect, and bringing a better user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of household electrical appliances, and in particular to a housing assembly and a water heater. Background Art

[0002] In the related art, the air inlet is directly opposite to the working component, so that the noise can be directly radiated from the air inlet to the outside of the water heater. The radiated noise is large, affecting the customer's experience. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, one object of the present invention is to provide a housing assembly.

[0005] Another object of the present invention is to provide a water heater.

[0006] In view of this, according to the first purpose of the present invention, a shell assembly is proposed, which includes: a shell, the shell is provided with a mounting port; a cover body, the cover body is covered on the mounting port, and an air inlet is opened on the cover body; a connecting plate, the connecting plate is provided on the mounting port, and a ventilation port is opened on the connecting plate; wherein the cover body is located on the outside of the shell.

[0007] The shell assembly provided by the present invention includes a shell, a cover and a connecting plate, wherein the shell is provided with a mounting port, the cover and the connecting plate enclose a silencer chamber, the cover is located on the outside of the shell, an air inlet is provided on the cover, a vent is provided on the connecting plate, and the cover is provided on the outside of the shell, thereby increasing the accommodation space inside the shell, on the one hand providing a larger installation space for electrical components. On the one hand, the large space is conducive to the heat dissipation of the internal electrical components and prolongs the service life of the electrical components. The shell assembly provided by the present application is provided with a cover with an air inlet on the mounting port on the outside of the shell and a connecting plate with a vent at the mounting port, so that the entire shell assembly is formed with two air inlets, and a silencer chamber is passed between the two air inlets, thereby increasing the path for noise to propagate outward, increasing the number of noise reflections through the silencer chamber, thereby effectively reducing noise and bringing a better user experience.

[0008] In addition, the housing assembly in the above technical solution provided by the present invention may also have the following additional technical features:

[0009] In the above technical solution, the shell assembly includes: a flow guide member, which is arranged on the cover body and located between the cover body and the connecting plate, and the flow guide member is used for guiding flow.

[0010] In this technical solution, the shell assembly also includes a flow guide member provided on the cover body, and the flow guide member is provided in the silencer cavity surrounded by the cover body, the shell body and the connecting plate. On the one hand, the flow guide member is used to guide the flow of air so that the inflowing air is uniform, meeting the requirement of the gas water heater to draw air to participate in combustion during the heating process, and blocking the propagation of internal noise while taking in air for ventilation. On the other hand, the flow guide member cuts off the direct connection between the air inlet and the vent, so that the noise enters the silencer cavity from the vent and radiates to the flow guide member, and then the flow guide member prevents part of the noise from being transmitted out through the air inlet, so that the generated noise has a significantly extended radiation path in the process of radiating to the outside world, and on the other hand, after being blocked, the noise radiated to the outside world is significantly attenuated, so as to achieve the purpose of reducing noise and improving user comfort.

[0011] In any of the above technical solutions, the guide member is arranged opposite to the air inlet, and the guide member is located between the air inlet and the vent.

[0012] In this technical solution, the deflector is specifically positioned between the air inlet and the vent. This allows air to flow through the hood's air inlet before being blocked by the deflector. Air then flows along the deflector into the vent on the connecting plate, thereby providing a guide. Furthermore, noise enters the silencer cavity through the vent and radiates to the deflector, which in turn prevents some of the noise from escaping through the air inlet. This significantly extends the radiation path of the generated noise and significantly attenuates the noise, achieving the goal of reducing noise.

[0013] In any of the above technical solutions, the ratio of the area of ​​the vent directly connected to the air inlet to the area of ​​the air inlet is less than or equal to 0.3.

[0014] In this technical solution, noise radiates outward through the cover body in the shell assembly. The cover body in the shell assembly can be regarded as a secondary radiation source, and the air inlet of the cover body can be regarded as a radiation outlet. The noise entering the cover body through the vent is radiated to the guide member, so that when the noise radiates outward, the direct connection between the secondary radiation source and the noise radiation outlet, that is, the vent and the air inlet is cut off. After passing through the vent, the noise radiates to the surroundings, forming a shadow area at the rear of the guide member. The noise sound wave needs to be reflected at least once to reach the shadow area. The ratio of the area directly connected between the vent and the air inlet to the area of ​​the air inlet is less than or equal to 0.3, that is, the area of ​​the overlapping part of the two air outlets is less than or equal to 0.3, so that the air inlet is located in the shadow area as much as possible, reducing the exposed area directly corresponding to the vent, so that the noise direct transmission area is less than or equal to 30% of the air inlet area, thereby reducing the proportion of noise directly transmitted through the air inlet.

[0015] In any of the above technical solutions, the vent is located on a side of the connecting plate away from the air inlet.

[0016] In this technical solution, the vents are located on the connecting plate and on one side away from the air inlet, so that while the air is being taken in for ventilation, the process of air intake and ventilation is kept away from the noise source. This has the unique performance advantage of noise reduction, reduces the propagation of noise from the source, and greatly extends the radiation path of the noise when it is radiated to the outside world.

[0017] In any of the above technical solutions, the cover body and the shell are an integrated structure or a split structure; or the connecting plate and the shell are an integrated structure or a split structure.

[0018] In this technical solution, on the one hand, the cover and shell are an integrated structure, which facilitates installation, increases the airtightness of the structure, improves the efficiency of air intake, prevents noise from radiating outward from the installation joint, reduces the path of noise radiation outward, and reduces noise propagation. On the other hand, the cover and shell are a separate structure, making the shell assembly applicable to a variety of models, improving economic efficiency, reducing the impact of the reflective coupling between the radiated noise and the shell on the cover, and blocking the outward radiation of combustion noise to the greatest extent. On the other hand, the connecting plate and shell are an integrated structure, which facilitates installation, increases the airtightness of the structure, improves the efficiency of air intake, prevents noise from radiating outward from the installation joint, reduces the path of noise radiation outward, and reduces noise propagation. On the other hand, the connecting plate and shell are a separate structure, making the shell assembly applicable to a variety of models, improving economic efficiency, reducing direct contact between the combustion noise emitted from the inside and the shell, enhancing the noise enhancement effect after reflective coupling, and blocking the outward radiation of combustion noise to the greatest extent.

[0019] In any of the above technical solutions, the guide member includes: a first guide plate, which is arranged on the cover body and is arranged opposite to the air inlet; a second guide plate, which is arranged on the cover body and is located on at least one side of the first guide plate.

[0020] In this technical solution, the air guide comprises a first air guide plate and a second air guide plate provided on the cover body. Specifically, the first air guide plate is provided opposite to the air inlet, and the second air guide plate is located on at least one side of the first air guide plate, so that the air intake process becomes a secondary air intake. The first air guide plate prevents the air inlet and the vent from being directly exposed to each other, and cuts off the direct connection between the air inlet and the vent. The second air guide plate cooperates with the first air guide plate to achieve the function of better blocking noise propagation while guiding the airflow in, and the second air guide plate is located on at least one side of the first air guide plate. In actual processing, it can be provided on one side or both sides of the first air guide plate. Any connection method that can achieve the purpose of guiding the airflow in and better blocking noise at the same time is within the protection scope of this application.

[0021] In any of the above technical solutions, the second guide plate includes an arc-shaped plate, and the arc-shaped plate is connected to at least one end of the first guide plate.

[0022] In this technical solution, the second guide plate includes an arc-shaped plate, which is a curved plate with a certain radius and arc length. It has a higher strength to withstand deformation and a stronger sense of design. The arc-shaped plate is connected to at least one end of the first guide plate to achieve the coordination between the arc-shaped plate and the first guide plate. They work together to increase the area in contact with the airflow, change the angle of contact with the airflow, and better guide the airflow. On the other hand, the noise propagation path is longer, so that the noise propagates in the cover for a longer time and the intensity is attenuated more.

[0023] In any of the above technical solutions, the first guide plate and the second guide plate are both straight plates; wherein the first guide plate and the second guide plate are spaced apart along an extension direction perpendicular to the first guide plate.

[0024] In this technical solution, the first guide plate and the second guide plate are both configured as straight plates with a simple structure, which are convenient for installation between the cover body and the shell. Specifically, the first guide plate and the second guide plate are spaced apart along an extension direction perpendicular to the first guide plate, so that the two guide plates can be used in combination, and a flow channel is formed between the first guide plate and the second guide plate, so that the airflow advances in an S-shaped route between the cover body and the shell, increasing the area in contact with the airflow, reducing the overlapping area between the air inlet and the vent, and increasing the distance of noise propagation. The noise propagates in the cavity for a longer time, and the noise intensity is more attenuated after multiple reflections before reaching the air inlet located in the shadow area, thereby achieving a better noise reduction effect.

[0025] In any of the above technical solutions, the first guide plate and the second guide plate are both straight plates, and the second guide plate is connected to at least one end of the first guide plate; wherein, the extension direction of the first guide plate and the extension direction of the second guide plate form an angle, and the opening of the angle faces the side of the ventilation port.

[0026] In this technical solution, both the first guide plate and the second guide plate are straight plates. Specifically, the second guide plate can be provided at one end of the first guide plate, or the second guide plate can be provided at both ends of the first guide plate. Furthermore, the extension direction of the first guide plate and the extension direction of the second guide plate form an angle, that is, the first guide plate and the second guide plate form a bent structure, and the opening of the angle faces the ventilation port, thereby guiding the intake airflow on the one hand, so that the guide plate can block noise to the greatest extent, further increasing the radiation path of the noise, and achieving a better noise reduction effect.

[0027] In any of the above technical solutions, the second guide plate includes a bent plate, one end of the bent plate is connected to one end of the first guide plate, and the other end of the bent plate extends toward the other end of the first guide plate.

[0028] In this technical solution, the second deflector includes a bent plate, one end of which is connected to one end of the first deflector and the other end of which extends toward the other end of the first deflector. By providing the bent plate at at least one end of the first deflector, a zigzag flow path is formed between the deflector and the housing, thereby increasing the propagation path of noise as it radiates to the outside world. This reduces the intensity of noise transmission through reflection, further reducing the area of ​​direct connection between the air inlet and the vent, and reducing direct noise transmission.

[0029] In any of the above technical solutions, the shell assembly also includes: a mounting seat, which is arranged on the cover body or the connecting plate; a through portion, which is opened on the mounting seat and passes through the connecting plate and the side wall of the cover body arranged opposite to the connecting plate.

[0030] In this technical solution, the housing assembly includes a mounting seat and a through-portion. Specifically, the mounting seat is mounted on the housing or the connecting plate. The through-portion is formed on the mounting seat and extends through the connecting plate and the sidewall of the housing opposite the connecting plate, ensuring that the through-portion extends entirely from the connecting plate to the top of the housing.

[0031] In any of the above technical solutions, there is one first guide plate, which is located between the mounting seat and the air inlet; or there are multiple first guide plates, which are arranged at intervals.

[0032] In this technical solution, on the one hand, there is only one first deflector plate, located between the mounting base and the air inlet, creating a barrier between the vent and the air inlet, blocking the connection between the vent and the air inlet. On the other hand, multiple first deflectors are spaced apart, thereby creating multiple barriers between the vent and the air inlet. Furthermore, the first deflectors are distributed on both sides of the mounting base, and the first deflectors on both sides are symmetrically distributed about the midline of the mounting base, thereby balancing the air flow on both sides of the mounting base and effectively blocking noise.

[0033] In any of the above technical solutions, the first guide plate includes a straight plate, an arc-shaped plate or a bent plate.

[0034] In this technical solution, the multiple first guide plates can be straight plates, curved plates, or bent plates. On one hand, the first guide plates include straight plates, which have a simple structure and are easy to install on the cover, thereby blocking the propagation of noise. On the other hand, the first guide plates include curved plates, which provide greater strength against deformation, increase the distance noise travels within the cover after exiting the vents, and reduce the intensity of noise transmission. On the other hand, the first guide plates include bent plates, the angle of which can be specifically set according to the air demand, thereby extending the noise propagation path and reducing the noise transmission intensity through reflection.

[0035] In any of the above technical solutions, the shell includes: a top plate, a cover body and a connecting plate are arranged on the top plate; a back plate, the back plate is connected to the top plate, the back plate includes a press-molded cavity, and the press-molded cavity is used to place sound-absorbing material; a panel, the panel is arranged opposite to the back plate, and the panel is provided with sound-absorbing material on the side facing the back plate.

[0036] In this technical solution, the shell includes a top plate, a back plate and a panel. The cover body and the connecting plate are arranged on the top plate, so that the cover body and the connecting plate are arranged on the top of the shell, that is, the air inlet and the vent are located at the top of the shell, and thus away from the studio, increasing the noise propagation path and improving user comfort. Furthermore, the back plate is connected to the top plate, and the back plate is provided with a press-molded cavity, which is used to place sound-absorbing materials. The back plate of this application eliminates the air inlet setting in traditional equipment, increases the setting space for setting sound-absorbing materials, and thus enhances the noise reduction effect. Furthermore, the panel and the back plate are arranged relative to each other, and sound-absorbing materials are also provided on the panel to achieve multi-directional noise reduction.

[0037] According to the second object of the present invention, a water heater is provided, comprising: a shell assembly as in any of the above technical solutions; and a burner disposed in the shell, with an air inlet located on a side of the shell away from the burner.

[0038] The water heater provided by the present invention includes a shell assembly of any of the above-mentioned technical solutions, a burner is arranged in the shell, and the air inlet is located on the side of the shell away from the burner, so that the position of the air inlet is the main noise source of the water heater. Therefore, it has all the beneficial effects of the shell assembly in any of the above-mentioned technical solutions, which will not be repeated here.

[0039] In the above technical solution, the water heater includes: a smoke pipe, one end of which is connected to the burner, and the other end of which is passed through the through-hole of the shell assembly; a sealing ring, which is sleeved on the smoke pipe and located between the smoke pipe and the through-hole.

[0040] In this technical solution, the water heater is provided with a smoke pipe, one end of which is connected to the burner and the other end is passed through the through-part of the shell assembly. There are some gaps between the smoke pipe and the through-part, and these gaps are also one of the paths of noise radiation. Furthermore, a sealing ring is provided on the smoke pipe. The sealing ring is located between the smoke pipe and the through-part to seal this part of the gap and reduce noise radiation.

[0041] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0043] Figure 1A schematic structural diagram of a housing assembly in an embodiment of the first aspect of the present invention is shown.

[0044] Figure 2 Show Figure 1 Schematic diagram of the exploded structure of the air intake assembly of the illustrated embodiment.

[0045] Figure 3 Show Figure 1 A schematic diagram of the structure of the air intake assembly after assembly of the illustrated embodiment.

[0046] Figure 4 Show Figure 1 A schematic structural diagram of the air intake assembly of the illustrated embodiment from another perspective.

[0047] Figure 5 Show Figure 3 A schematic structural diagram of the air intake assembly of the illustrated embodiment from another perspective.

[0048] Figure 6 Show Figure 3 Front view of the air intake assembly of the illustrated embodiment.

[0049] Figure 7 Show Figure 3 Rear view of the air intake assembly of the illustrated embodiment.

[0050] Figure 8 Show Figure 2 Right side view of the air intake assembly of the illustrated embodiment.

[0051] Figure 9 Shown Figure 3 A top view of the air intake assembly of the illustrated embodiment.

[0052] Figure 10 Shown Figure 3 Bottom view of the air intake assembly of the illustrated embodiment.

[0053] Figure 11 Shown Figure 2 Schematic diagram of the arrangement structure of the air guide plate in the air intake assembly of the illustrated embodiment.

[0054] Figure 12 A schematic diagram of the arrangement structure of the air guide plate in the air intake assembly according to another embodiment of the present invention is shown.

[0055] Figure 13 A schematic diagram of the arrangement structure of the air guide plate in the air intake assembly according to another embodiment of the present invention is shown.

[0056] Figure 14 A schematic diagram of the arrangement structure of the air guide plate in the air intake assembly according to another embodiment of the present invention is shown.

[0057] Figure 15A schematic diagram of the arrangement structure of the air guide plate in the air intake assembly according to another embodiment of the present invention is shown.

[0058] Figure 16 A schematic diagram of the arrangement structure of the air guide plate in the air intake assembly according to another embodiment of the present invention is shown.

[0059] Figure 17 A schematic diagram of the arrangement structure of the air guide plate in the air intake assembly according to another embodiment of the present invention is shown.

[0060] Figure 18 A schematic diagram showing the noise radiation of the air intake assembly of the present invention.

[0061] Figure 19 A schematic diagram showing the exploded structure of a water heater according to an embodiment of the present invention is shown.

[0062] Figure 20 Show Figure 19 The schematic diagram of the structure of the water heater of the embodiment shown is shown with the panel removed.

[0063] Figure 21 Show Figure 20 Front view of the illustrated embodiment.

[0064] Figure 22 Show Figure 20 Left side view of the illustrated embodiment.

[0065] Figure 23 Show Figure 20 Right side view of the illustrated embodiment.

[0066] Figure 24 Show Figure 20 Top view of the illustrated embodiment.

[0067] Figure 25 Show Figure 20 Rear view of the illustrated embodiment.

[0068] Figure 26 Show Figure 19 Schematic diagram of the arrangement structure of the smoke pipe sealing ring of the water heater in the embodiment shown.

[0069] Figure 27 A schematic diagram showing the arrangement structure of a smoke tube sealing ring according to another embodiment of the present invention is shown.

[0070] Figure 28 A schematic diagram showing the arrangement structure of a smoke tube sealing ring according to another embodiment of the present invention is shown.

[0071] in, Figures 1 to 28 The corresponding relationship between the reference numerals and component names is as follows:

[0072] 1 water heater, 10 housing assembly, 12 housing, 122 mounting port, 126 back plate, 128 panel, 130 press cavity, 132 silencer cavity, 14 cover, 142 air inlet, 16 connecting plate, 162 vent, 17 guide member, 172 first guide plate, 174 second guide plate, 18 mounting seat, 19 through portion, 20 burner, 30 volute, 40 sealing ring. DETAILED DESCRIPTION

[0073] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0074] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0075] Refer to the following Figures 1 to 28 The housing assembly and water heater according to some embodiments of the present invention are described.

[0076] like Figures 1 to 18 As shown, one embodiment of the present invention provides a housing assembly 10 , which includes a housing 12 , a cover 14 and a connecting plate 16 .

[0077] Among them, such as Figure 1 As shown, the housing 12 is provided with a mounting opening 122, the cover 14 is covered on the mounting opening 122, and the cover 14 has an air inlet 142. The connecting plate 16 is provided at the mounting opening 122, and the connecting plate 16 has a vent 162. The cover 14 is located outside the housing 12.

[0078] The housing assembly 10 provided in an embodiment of the present invention includes a housing 12, a cover 14, and a connecting plate 16. The housing 12 is provided with a mounting opening 122, and the cover 14 and the connecting plate 16 enclose a silencer chamber 132. The cover 14 is located outside the housing 12 and has an air inlet 142 formed thereon. The connecting plate 16 has a vent 162 formed thereon. The cover 14 is disposed outside the housing 12 to increase the internal accommodation space of the housing 12, providing a larger installation space for electrical components. On the other hand, the large space is conducive to heat dissipation of internal electrical components, extending the service life of the electrical components. The shell assembly 10 provided in the present application is formed with two air outlets in the entire shell assembly 10 by arranging a cover body 14 with an air inlet 142 on the outer mounting port 122 of the shell 12 and arranging a connecting plate 16 with a vent 162 at the mounting port 122, and a silencer cavity 132 passes between the two air inlets 142, thereby increasing the path for noise to propagate outward and increasing the number of noise reflections through the silencer cavity 132, thereby effectively reducing noise and providing users with a better user experience.

[0079] Furthermore, the air inlet 142 is arranged on the side wall of the cover body 14, and the vent 162 is arranged on the side of the connecting plate 16 away from the air inlet 142. While the air is taken in for ventilation, the radiation path of the noise is greatly extended during the process of radiating to the outside world, which has the unique performance advantage of noise reduction. The vent 162 is located on the side of the second side wall away from the air inlet 142, which makes the air intake for ventilation further away from the noise source, thereby reducing the propagation of noise from the source.

[0080] Further, if Figure 2 As shown, the housing assembly 10 includes a flow guide 17. The flow guide 17 is provided on the cover 14 and is located between the cover 14 and the connecting plate 16. The flow guide 17 is used for guiding flow.

[0081] Specifically, the guide member 17 is arranged in the silencer cavity 132 surrounded by the cover body 14, the shell 12 and the connecting plate 16. On the one hand, the guide member 17 is used to guide the flow of air so that the inflowing air is uniform, meeting the need of the gas water heater 1 to draw air to participate in combustion during the heating process, and blocking the propagation of internal noise while taking in air for ventilation. On the other hand, the guide member 17 cuts off the direct connection between the air inlet 142 and the vent 162, so that the noise enters the silencer cavity 132 from the vent 162 and radiates to the guide member 17, and then the guide member 17 prevents part of the noise from being transmitted out through the air inlet 142, so that the generated noise has a significantly extended radiation path in the process of radiating to the outside world, and on the other hand, after being blocked, the noise radiated to the outside world is significantly attenuated, so as to achieve the purpose of reducing noise and improving user comfort.

[0082] Furthermore, the deflector 17 is positioned opposite the air inlet 142, located between the air inlet 142 and the vent 162. This allows air to flow through the air inlet 142 on the housing 14 and then be blocked by the deflector 17. The air then flows along the deflector 17 and into the vent 162 on the connecting plate 16, thereby providing a guide. Furthermore, noise enters the silencing chamber 132 through the vent 162 and radiates to the deflector 17. This in turn prevents some of the noise from radiating out through the air inlet 142, significantly extending the radiation path of the generated noise. The noise radiated to the outside world is significantly attenuated, thereby achieving the desired noise reduction effect.

[0083] In any of the above embodiments, if Figure 18 As shown, the ratio of the area of ​​the vent 162 directly communicating with the air inlet 142 to the area of ​​the air inlet 142 is less than or equal to 0.3.

[0084] In this embodiment, the noise is radiated outward through the cover body 14 in the shell assembly 10. The cover body 14 in the shell assembly 10 can be regarded as a secondary radiation source, and the air inlet 142 of the cover body 14 can be regarded as a radiation outlet. The noise entering the cover body 14 through the vent 162 is radiated to the guide member 17, so that when the noise radiates outward, the direct connection between the secondary radiation source and the noise radiation outlet, that is, the vent 162 and the air inlet 142 is cut off. After passing through the vent 162, the noise radiates to the surroundings, forming a shadow area at the rear of the guide member 17. The noise sound waves need to be reflected at least once before they can reach the shadow area. The ratio of the area directly connected between the vent 162 and the air inlet 142 to the area of ​​the air inlet 142 is less than or equal to 0.3, that is, the area of ​​the overlapping part of the two air vents is less than or equal to 0.3, so that the air inlet 142 is located in the shadow area as much as possible, reducing the exposed area directly corresponding to the vent 162, so that the direct transmission area of ​​the noise is less than or equal to 30% of the area of ​​the air inlet 142, thereby reducing the proportion of noise directly transmitted through the air inlet 142.

[0085] Specifically, if Figure 18 As shown, the noise is radiated into the muffler cavity 132 through the vent 162. Part of the area of ​​the air inlet 142 is blocked by the guide member 17, and the other part of the area is directly connected to the vent 162, forming a Figure 18 The straight-through area S1 shown is achieved by setting the position of the guide 17 and the area on the opposite side of the guide 17 and the vent 162 to achieve a ratio of the straight-through area S1 to the total area of ​​the air inlet 142 less than or equal to 0.3, so that the air inlet 142 is located as much as possible in the shaded area in the figure, reducing the exposed area directly corresponding to the vent 162, and thereby reducing the proportion of noise directly transmitted through the air inlet 142.

[0086] Furthermore, the area of ​​the air inlet 142 is in the range of 2000 mm. 2 Up to 5000mm 2 The area of ​​the vent 162 is in the range of 3000mm 2 Up to 8000mm 2 .

[0087] By limiting the area of ​​the air inlet 142 to 2000mm 2 Up to 5000mm 2 The area of ​​the vent 162 is in the range of 3000mm 2 Up to 8000mm 2 The overlapping area of ​​the air inlet 142 and the ventilation opening 162 does not exceed 30% of the total area of ​​the air inlet 142. The specific value can be determined based on the different volumes of the equipment. Different volumes correspond to different gas volumes, and different gas volumes correspond to different amounts of air required for combustion. Therefore, the area of ​​the air inlet 142 can be set to meet the requirements. This ensures that the air intake requirements are met while minimizing the outward radiation of noise.

[0088] Furthermore, the vent 162 is located on the side of the connecting plate 16 away from the air inlet 142. This allows the air intake and ventilation process to be kept away from the noise source, providing a unique performance advantage in noise reduction. This reduces the spread of noise at the source, significantly extending the radiation path of the noise as it radiates to the outside world.

[0089] In one embodiment of the present invention, further, the cover body 14 and the shell 12 are an integrated structure, so as to facilitate installation, increase the air tightness of the structure, improve the efficiency of air intake, avoid noise radiation outward from the installation joint, reduce the path of noise radiation outward, and reduce noise propagation.

[0090] In one embodiment of the present invention, further, the cover body 14 and the shell 12 are of a split structure, so that the shell assembly 10 can be applied to a variety of models, improve economy, reduce the impact of the reflection coupling between the radiation noise and the shell 12 on the cover body 14, and block the outward radiation of the combustion noise to the greatest extent.

[0091] In one embodiment of the present invention, further, the connecting plate 16 and the shell 12 are an integrated structure, so as to facilitate installation, increase the air tightness of the structure, improve the efficiency of air intake, avoid noise radiation outward from the installation joint, reduce the path of noise radiation outward, and reduce noise propagation.

[0092] In one embodiment of the present invention, further, the connecting plate 16 and the shell 12 are of a split structure, so that the shell assembly 10 can be applied to a variety of models, improve economy, reduce direct contact between the combustion noise transmitted from the inside and the shell 12, enhance the effect of noise after reflection coupling, and block the outward radiation of the combustion noise to the greatest extent.

[0093] In one embodiment of the present invention, further, Figure 11 、 Figure 13 、 Figure 14 and Figure 15 As shown, the guide member 17 includes a first guide plate 172 and a second guide plate 174 .

[0094] The first guide plate 172 is disposed on the cover 14 , and is opposite to the air inlet 142 . The second guide plate 174 is disposed on the cover 14 , and is located on at least one side of the first guide plate 172 .

[0095] Specifically, first deflector 172 is positioned opposite air inlet 142, thereby forming a tortuous flow path with housing 12. This shields and reflects noise entering through vent 162, extending the noise propagation path, and effectively attenuating and blocking the noise, thereby achieving noise reduction. Furthermore, by positioning first deflector 172 on the sidewall opposite vent 162, the layout space for first deflector 172 is increased, allowing for a variety of layout options to achieve optimal noise reduction.

[0096] Furthermore, the second guide plate 174 is provided on at least one side of the first guide plate 172. The second guide plate 174 cooperates with the first guide plate 172 to achieve the function of guiding the inflow of air while better blocking the propagation of noise.

[0097] Specifically, there is one second deflector plate 174 connected to one end of the first deflector plate 172. Alternatively, there are two second deflectors 174 connected to both ends of the first deflector plate 172. Providing a second deflector plate 174 at one or both ends of the first deflector plate 172 extends the flow path of the deflector 17, increases the noise blocking area, and enhances the noise reduction effect.

[0098] Specifically, the first guide plate 172 and the second guide plate 174 can be an integrated structure or a split structure. The specific structure and setting method can be specifically set according to the space of the silencer cavity 132 to achieve the best noise reduction effect.

[0099] In one embodiment of the present invention, further, Figure 14 As shown, the second guide plate 174 comprises a curved plate.

[0100] Specifically, the curved plates are positioned on one or both sides of the first deflector plate 172. By utilizing the curved plate, the curved plate's curvature provides enhanced flow guidance and greater strength to withstand deformation. The combined use of the curved plate and the first deflector plate 172 increases the area of ​​contact with the airflow, effectively guiding the airflow. Furthermore, the noise propagation path is lengthened, increasing the noise propagation path within the silencing chamber 132 and significantly attenuating the noise intensity.

[0101] In one embodiment of the present invention, the flow guide 17 further includes a first flow guide plate 172 and a second flow guide plate 174. The first flow guide plate 172 is a straight plate, and the second flow guide plate 174 is also a straight plate. The first flow guide plate 172 and the second flow guide plate 174 are spaced apart along a direction perpendicular to the extension direction of the first flow guide plate 172.

[0102] Specifically, if Figure 11 As shown, by setting the first guide plate 172 and the second guide plate 174 as straight plates, the structure is simple and easy to install in the silencer chamber 132. Furthermore, along the extension direction perpendicular to the first guide plate 172, the first guide plate 172 and the second guide plate 174 are spaced apart, and the second guide plate 174 is set close to the side of the vent 162, that is, along the direction from the air inlet 142 to the vent 162, there is a certain distance between the first guide plate 172 and the second guide plate 174. By setting a certain distance, a flow channel for air flow is formed, and then during the air intake process, the air enters the silencer chamber 132 through the air inlet 142, and after being blocked by the first guide plate 172, it flows along the length direction of the first guide plate 172 to both sides of the first guide plate 172, and flows out of the first guide plate 172. When the air flows from the guide plate 172 to the side of the vent 162, it is blocked by the second guide plate 174 and then flows toward the gap between the first guide plate 172 and the second guide plate 174, and then flows to the vent 162. Under the combined action of the first guide plate 172 and the second guide plate 174, the air flow advances in an S-shaped route in the silencer cavity 132, reducing the overlapping area between the air inlet 142 and the vent 162, increasing the path for noise propagation, and the noise propagates longer in the cavity. The noise reaches the air inlet 142 located in the shadow area after multiple reflections, and the intensity of the noise is more attenuated, thereby achieving a better noise reduction effect.

[0103] In one embodiment of the present invention, the guide member 17 further includes: a first guide plate 172 and a second guide plate 174. The first guide plate 172 and the second guide plate 174 are both configured as straight plates.

[0104] Specifically, if Figure 13As shown, the deflector 17 includes a first deflector plate 172 and a second deflector plate 174 connected to each other. An angle is formed between the first deflector plate 172 and the second deflector plate 174, and the second deflector plate 174 extends toward the vent 162. By arranging the first deflector plate 172 and the second deflector plate 174 to form an angle, that is, forming a bent structure with the opening of the angle facing the vent 162, the intake airflow is guided. On the other hand, the increased length and area of ​​the deflector 17 can maximize noise blocking, further increase the noise radiation path, and achieve a better noise reduction effect.

[0105] Furthermore, there are two second deflectors 174, each connected to the ends of the first deflector 172. This creates a trumpet-like structure between the first and second deflectors 172, 174. This trumpet-like structure guides the intake airflow. Furthermore, the trumpet-shaped structure's mouth faces the vent 162, increasing the noise blocking area. This maximizes noise blocking, increases the noise radiation path, and enhances noise attenuation, achieving a more effective noise reduction effect.

[0106] In one embodiment of the present invention, further, Figure 15 As shown, the guide member 17 includes a first guide plate 172 and a second guide plate 174. The second guide plate 174 includes a bent plate, one end of which is connected to one end of the first guide plate 172, and the other end of which extends toward the other end of the first guide plate 172.

[0107] In this embodiment, the structure of the first deflector 172 can be a straight plate, an arc-shaped plate, or a bent plate. The second deflector 174 is configured as a bent plate. By configuring the second deflector 174 as a bent plate as a whole and connecting the second deflector 174 to the end of the first deflector 172, during the inhalation process, the airflow enters the air inlet 142 and flows along the first deflector 172 to the second deflector 174, and then continues along the structure of the second deflector 174 to the vent 162. In other words, by configuring the second deflector 174 as a bent plate, the flow path of the airflow is extended, and the propagation path of the noise radiating outward is also extended, thereby increasing the degree of noise attenuation during the propagation process. Furthermore, the bent plates are provided on one or both sides of the first deflector 172, which increases the area blocked by the deflector 17 from the noise radiating through the vent 162. In other words, the area directly connected to the vent 162 and the air inlet 142 is reduced, further enhancing the noise reduction effect.

[0108] Specifically, the bent plate has a V-, U-, or W-shape. By providing the bent plate at at least one end of the first guide plate 172, a zigzag flow path is formed between the guide member 17 and the housing 12. This increases the propagation path of combustion noise as it radiates to the outside world, reduces noise transmission intensity through reflection, and further reduces the area of ​​direct communication between the air inlet 142 and the vent 162, thereby reducing direct noise transmission. The specific structural configuration is determined based on the specific product characteristics and is not limited here.

[0109] In any of the above embodiments, the housing assembly 10 further includes a mounting seat 18 and a through portion 19. The mounting seat 18 is disposed on the housing 14 or the connecting plate 16; the through portion 19 is formed on the mounting seat 18 and passes through the connecting plate 16 and a side wall of the housing 14 opposite to the connecting plate 16.

[0110] In this embodiment, the mounting seat 18 is provided on the cover 14 or the connecting plate 16. The through portion 19 is provided on the mounting seat 18 and passes through the connecting plate 16 and the side wall of the cover 14 opposite the connecting plate 16, thereby ensuring that the through portion 19 extends entirely from the connecting plate 16 to the top of the cover 14.

[0111] Furthermore, the through portion 19 is a through-hole structure, which can be used to install pipes, and the pipes are passed through the through-hole structure.

[0112] In one embodiment of the present invention, further, there is one first guide plate 172 located between the mounting base 18 and the air inlet 142 , so that a barrier is provided between the vent 162 and the air inlet 142 , thereby blocking the connection between the vent 162 and the air inlet 142 .

[0113] Specifically, the length of the first guide plate 172 is greater than the width of the mounting seat 18 , thereby achieving the functions of guiding the intake air through the first guide plate 172 and blocking the propagation of noise.

[0114] Specifically, the first guide plate 172 is arranged on both sides of the mounting seat 18, and one end of the first guide plate 172 is connected to the mounting seat 18, so that the first guide plate 172 and the mounting seat 18 together form a shielding wall to guide the air flow entering the air inlet 142 and block the noise radiated by the vent 162.

[0115] In one embodiment of the present invention, further, Figure 12 、 Figure 16 and Figure 17As shown, there are multiple first guide plates 172, which are distributed on both sides of the mounting base 18. The first guide plates 172 on both sides of the mounting base 18 are symmetrically distributed about the central axis of the mounting base 18, thereby balancing the gas flow on both sides of the mounting base 18 and effectively blocking noise. The mounting base 18 is a cylindrical structure, and the central hole of the cylindrical structure serves as the mounting hole for the smoke pipe.

[0116] Furthermore, the plurality of first guide plates 172 are spaced apart in a direction parallel to the surface of the side wall where the air inlet 142 is located, and the first guide plates 172 are inclined relative to the side wall where the air inlet 142 is located.

[0117] Specifically, by arranging multiple first guide plates 172 at intervals in a direction parallel to the surface of the side wall where the air inlet 142 is located, and the multiple first guide plates 172 are arranged at an angle relative to the side wall where the air inlet 142 is located, multiple flow channels are formed between the multiple first guide plates 172. Furthermore, by arranging them at an angle on the shell 12, the extension direction of the flow channel is also inclined relative to the direction from the air inlet 142 to the vent 162, thereby providing multiple barriers between the vent 162 and the air inlet 142, thereby better blocking noise while guiding the airflow.

[0118] Furthermore, the plurality of first guide plates 172 may be straight plates, curved plates or bent plates. On one hand, the first guide plates 172 include straight plates, which have a simple structure and are easy to install on the cover 14 to block the spread of noise. On the other hand, Figure 16 As shown, the first guide plate 172 includes a curved plate, which makes it more resistant to deformation, increases the distance that the noise propagates in the muffler cavity 132 after it is transmitted from the vent 162, and reduces the transmission intensity of the noise. Figure 17 As shown, the first guide plate 172 includes a bent plate, and the angle of the bent plate can be specifically set according to the air demand, so as to extend the propagation path of the noise and reduce the propagation intensity of the noise by using reflection.

[0119] In any of the above embodiments, the housing 12 further includes a back plate 126 and a front plate 128. The housing 14 and the connecting plate 16 are disposed in the mounting opening 122 defined by the back plate 126 and the front plate 128. The back plate 126 includes a press-molded cavity 130 for placing a sound-absorbing material. The front plate 128 is disposed opposite the back plate 126, and the sound-absorbing material is disposed on the side of the panel 128 facing the back plate 126.

[0120] In this embodiment, the cover body 14 and the connecting plate 16 are arranged at the installation opening 122 surrounded by the back plate 126 and the panel 128, so that the cover body 14 and the connecting plate 16 are arranged at the top of the shell 12, that is, the air inlet 142 and the vent 162 are located at the top of the shell 12, and thus away from the studio, thereby increasing the noise propagation path and improving user comfort.

[0121] Furthermore, the back panel 126 is provided with a press-formed cavity 130, which is used to place sound-absorbing materials. The back panel 126 of the present application cancels the air inlet setting in traditional equipment, increases the setting space for setting sound-absorbing materials, and thus enhances the noise reduction effect. Furthermore, the panel 128 is arranged opposite to the back panel 126, and the panel 128 is also provided with sound-absorbing materials to achieve multi-directional noise reduction.

[0122] Furthermore, the back plate 126 is used for the side of the device facing the installation surface, and the panel 128 is arranged opposite to the back plate 126. Specifically, as Figure 19 and Figure 25 As shown, in the present application, the air inlet 142 is removed from the back panel 126, and the back panel 126 is provided with a press-molded cavity 130. The press-molded cavity 130 is used to set a sound-absorbing material. By removing the air inlet 142 from the back panel 126, the air inlet 142 is kept away from the installation surface, so that during the operation of the water heater 1, the reflection coupling between the radiated noise and the installation surface is avoided to cause noise enhancement.

[0123] Specifically, the sound-absorbing material includes sound-absorbing cotton.

[0124] like Figures 19 to 28 As shown, one embodiment of the present invention provides a water heater 1, comprising a shell assembly 10 as in any of the above embodiments; and a burner 20, which is arranged in the shell 12, and the air inlet 142 is located on the side of the shell 12 away from the burner 20.

[0125] The water heater 1 provided by the present invention includes a shell assembly 10 of any of the above-mentioned embodiments, the burner 20 is arranged in the shell 12, and the air inlet 142 is located on the side of the shell 12 away from the burner 20, so that the position of the air inlet 142 is away from the main noise source of the water heater 1, so that during the operation of the gas water heater 1, the radiation noise is avoided from being reflected and coupled to cause noise enhancement. Being away from the noise source, the noise transmission path is longer and the noise intensity is attenuated more. The vent 162 is separately arranged from the air inlet 142, so that the air intake process becomes a secondary air intake, cutting off direct connection and further enhancing the noise reduction effect.

[0126] In the above embodiment, the water heater 1 further includes: a smoke pipe and a sealing ring 40 .

[0127] One end of the smoke pipe is connected to the burner 20 , and the other end of the smoke pipe is passed through the through portion 19 of the shell assembly 10 ; the sealing ring 40 is sleeved on the smoke pipe and located between the smoke pipe and the through portion 19 .

[0128] In this embodiment, there are some gaps between the smoke pipe and the through-hole 19, which are also one of the paths for noise radiation. Therefore, a sealing ring 40 is provided on the smoke pipe. The sealing ring 40 is located between the smoke pipe and the through-hole 19 to block these gaps and reduce noise radiation. Specific embodiments

[0130] This embodiment provides a gas water heater. Figures 19 to 28 As shown, the gas water heater includes a housing assembly 10 and a burner 20. The housing assembly 10 comprises a housing 12, a cover 14, a connecting plate 16, and a flow guide 17. The burner 20 is disposed within the housing 12, with an air inlet 142 located on the side of the housing 12 away from the burner 20. The cover 14 is located outside the housing 12 and has an air inlet 142 defined therein. The connecting plate 16 has a vent 162 defined therein. The flow guide 17 is disposed on the cover 14, between the cover 14 and the connecting plate 16, and serves to guide air flow.

[0131] Specifically, during operation, air flows from the air inlet 142 of the cover 14 into the silencer chamber 132, and then bypasses the guide member 17 to enter the interior of the water heater 1 through the vent 162 of the connecting plate 16. Compared with the traditional water heater's direct air intake from the back, the top air intake is farther away from the noise source, the noise transmission path is longer, and the noise intensity is more attenuated. This solution utilizes the cover 14 and the connecting plate 16 of the water heater 1 to form two air inlets, which can isolate noise while taking in air for ventilation, and has the unique performance advantage of noise reduction. In addition, this solution sets a guide member 17 inside the cover 14, which can better block noise while guiding the airflow in.

[0132] like Figures 11 to 17 The various air distribution schemes shown. Different air distribution schemes have different flow resistance and sound insulation performance, and need to be adjusted and selected based on the performance requirements of the entire unit.

[0133] Furthermore, the area of ​​the air inlet 142 is 2000mm 2 Up to 5000mm 2 The area of ​​the ventilation opening 162 is 3000mm 2 Up to 8000mm 2 When noise radiates outward through the housing assembly 10, the connecting plate 16 can be regarded as a secondary radiation source, and the air inlet 142 of the cover body 14 can be regarded as a radiation outlet. The guide member 17 is used to cut off the direct connection between the secondary radiation source and the noise radiation outlet, that is, the vent 162 of the connecting plate 16 and the air inlet 142 of the cover body 14.

[0134] Figure 18 This is a schematic diagram of the deflector 17 blocking direct noise transmission. Noise radiates through the vents 162 of the connecting plate 16, forming a shadow area behind the deflector 17. Sound waves must reflect at least once before reaching the shadow area. Therefore, the deflector 17 is designed to ensure that the air inlet 142 of the housing 14 is positioned as much as possible within the shadow area to reduce direct noise transmission. Furthermore, the ratio of the area of ​​the direct noise transmission region (S1) to the total area (S2) of the air inlet 142 is less than or equal to 0.3.

[0135] Furthermore, the air inlet 142 of the cover body 14 can be located on the back side, the front side, or both sides of the cover body 14. The position of the vent 162 of the connecting plate 16 is not limited to being located on the front side.

[0136] Existing gas water heaters mainly adopt the back air intake solution, with multiple air inlets opened on the back plate 126 of the water heater. Figure 19 、 Figure 22 、 Figure 23 and Figure 25 As shown, the air inlet of the back plate 126 is cancelled, the back plate 126 is formed in one piece, and the air inlet 142 is moved up to the cover body 14, making the back of the hot water heater more simple and beautiful. In addition, a smoke pipe opening is left at the top of the gas water heater. To facilitate the installation of the smoke pipe, the aperture of the smoke pipe opening is generally larger than the aperture of the smoke pipe. There are some gaps between the smoke pipe opening at the top of the shell 12 and the smoke pipe. These gaps are also one of the paths for noise radiation. This solution uses a silicone sealing ring 40 to block this gap to reduce noise radiation. Figure 26 The sealing ring 40 shown can be installed between the through hole of the cover body 14 and the smoke pipe, or can be installed between the through hole of the cover body 14 and the smoke pipe. Figure 27 As shown, the sealing ring 40 is installed between the through hole of the connecting plate 16 and the smoke pipe, or as shown in FIG. Figure 28 As shown, the sealing ring 40 is installed between the connecting plate 16 and the volute 30 of the centrifugal fan. In addition, the noise reduction effect can be further enhanced by adding porous sound-absorbing materials inside the water heater 1, such as Figure 19 、 Figures 22 to 25 As shown, areas where porous sound-absorbing materials may be arranged are given, including the face plate 128, the press-molded cavity 130 of the back plate 126, etc.

[0137] The gas water heater provided in this embodiment has a ventilation structure consisting of a cover 14, a connecting plate 16, and a flow guide 17 disposed on the top of the water heater 1. The air intake passage is optimized, positioning the air inlet 142 away from the main noise source of the water heater 1. This also blocks the direct noise radiation path, achieving vibration and noise reduction effects for the gas water heater. The gas water heater provided by the present invention not only has a simple appearance for the water heater 1 but also achieves excellent noise reduction effects, providing users with a better user experience.

[0138] In this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance, unless otherwise expressly specified or limited. Terms such as "connect," "install," and "fix" should be interpreted broadly. For example, "connect" can refer to a fixed connection, a detachable connection, or an integral connection; and can be directly connected or indirectly connected through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0139] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0140] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A housing assembly, characterized in that: The housing assembly comprises: a housing, wherein the housing is provided with a mounting opening; A cover body, the cover body is arranged on the installation opening, and an air inlet is opened on the cover body; A connecting plate, the connecting plate being arranged at the mounting opening and having a vent; Wherein, the cover is located outside the shell; a flow guide, provided on the cover body and located between the cover body and the connecting plate; The air inlet is provided on the side wall of the cover body, and the vent is located on a side of the connecting plate away from the air inlet; The guide member includes a first guide plate and a second guide plate; The first guide plate is arranged on the cover body, and the first guide plate is arranged opposite to the air inlet; The second guide plate is provided on the cover body, and the second guide plate is located on at least one side of the first guide plate; The housing assembly further includes a mounting seat and a through portion; The mounting seat is arranged on the cover or the connecting plate; The through portion is provided on the mounting seat, and the through portion passes through the connecting plate and the side wall of the cover body arranged opposite to the connecting plate; The number of the first deflector is one, the first deflector is located between the mounting seat and the air inlet, the first deflector is arranged on both sides of the mounting seat, and one end of the first deflector is connected to the mounting seat; or There are multiple first guide plates, which are arranged at intervals and distributed on both sides of the mounting seat. The first guide plates distributed on both sides of the mounting seat are symmetrically distributed about the central axis of the mounting seat.

2. The housing assembly according to claim 1, wherein: The flow guide is used for guiding flow.

3. The housing assembly according to claim 2, wherein: The flow guide is arranged opposite to the air inlet, and the flow guide is located between the air inlet and the vent.

4. The housing assembly according to claim 2, wherein: The ratio of the area of ​​the vent directly connected to the air inlet to the area of ​​the air inlet is less than or equal to 0.

3.

5. The housing assembly according to any one of claims 1 to 4, wherein: The cover and the housing are of an integrated structure or a split structure; or The connecting plate and the housing are of an integrated structure or a split structure.

6. The housing assembly according to any one of claims 2 to 4, characterized in that: The second guide plate includes an arc-shaped plate connected to at least one end of the first guide plate.

7. The housing assembly according to any one of claims 2 to 4, characterized in that: The first guide plate and the second guide plate are both straight plates; Wherein, the first guide plate and the second guide plate are arranged at intervals along an extension direction perpendicular to the first guide plate.

8. The housing assembly according to any one of claims 2 to 4, characterized in that: The first guide plate and the second guide plate are both straight plates, and the second guide plate is connected to at least one end of the first guide plate; Wherein, an extension direction of the first guide plate and an extension direction of the second guide plate form an angle, and an opening of the angle faces one side of the vent.

9. The housing assembly according to claim 6, wherein: The second guide plate includes a bent plate, one end of the bent plate is connected to one end of the first guide plate, and the other end of the bent plate extends toward the other end of the first guide plate.

10. The housing assembly according to any one of claims 2 to 4, characterized in that: The first guide plate includes a straight plate, an arc-shaped plate or a bent plate.

11. The housing assembly according to any one of claims 1 to 4, characterized in that: The housing comprises: a back plate, the back plate including a press-molded cavity for placing a sound-absorbing material; A panel is arranged opposite to the back panel, and the sound-absorbing material is arranged on a side of the panel facing the back panel.

12. A water heater, characterized in that: include: The housing assembly according to any one of claims 1 to 11; as well as The burner is arranged in the shell, and the air inlet is located on a side of the shell away from the burner.

13. The water heater according to claim 12, characterized in that Also includes: a smoke pipe, one end of which is connected to the burner, and the other end of which is passed through the through portion of the shell assembly; The sealing ring is sleeved on the smoke pipe and located between the smoke pipe and the through portion.

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