Noise reduction shell and gas water heater

Abstract

The utility model belongs to the technical field of household appliances, disclose a kind of noise reduction shell and gas water heater.Noise reduction shell includes bottom shell and backplate.First air inlet is provided in bottom shell, backplate is connected in the side of bottom shell away from face shell, noise will enter between backplate and shell by first air inlet.In order to prevent noise from the two sides of backplate and bottom shell along left-right direction transmission, backplate is provided with convex rib, and each convex rib extends along up-down direction and protrudes towards bottom shell, to separate cavity into first chamber and inner chamber.The noise reduction shell is provided with convex rib spaced along left-right direction on backplate, so that the noise transmitted through first air inlet is first blocked by convex rib to achieve sound insulation effect, and the noise not blocked by convex rib enters inner chamber, so that the noise is transmitted and weakened in inner chamber, and plays a role in sound insulation and noise reduction.

Description

Technical Field

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

[0002] When a gas water heater is in use, noise is transmitted from the first air inlet on the bottom shell. To reduce the impact of noise on the user, a back panel is usually added to the bottom shell to reduce noise transmission. However, noise can also be transmitted from the joint between the back panel and the bottom plate on both sides. To reduce noise transmission from the sides of the back panel, noise-reducing cotton is usually placed at the joint between the back panel and the bottom plate to block noise transmission. However, after long-term use, the noise-reducing cotton may become moldy or damaged, resulting in a decrease in noise reduction effect. Utility Model Content

[0003] One of the technical problems to be solved by this utility model is to provide a noise-reducing housing that can solve the problem of reduced noise reduction effect after long-term use of the noise-reducing housing in the prior art, thereby improving the user experience.

[0004] The second technical problem to be solved by this utility model is to provide a gas water heater that can solve the problem of reduced noise reduction effect after long-term use of the noise reduction shell in the prior art, thereby improving the user experience.

[0005] The first technical problem mentioned above is solved by the following technical solution:

[0006] A noise-reducing housing includes a bottom shell and a back plate, the bottom shell and the back plate being connected to each other to form a cavity;

[0007] The bottom shell is provided with a first air inlet;

[0008] The bottom shell or the back plate is provided with at least one rib. The rib extends along the vertical direction of the noise reduction shell so that the rib divides the cavity into a first chamber and an inner chamber for consuming noise. The first chamber and the inner chamber are connected. The first air inlet is located in the first chamber. The lower side of the back plate is provided with a second air inlet that is connected to the first chamber.

[0009] The noise-reducing housing described in this utility model has the following advantages compared with the prior art:

[0010] By setting ribs on the back panel to form an interconnected first chamber and inner chamber, the noise transmitted through the first air inlet is first blocked by the ribs to achieve a sound insulation effect. The noise that is not blocked by the ribs then enters the inner chamber, so that the noise is transmitted and weakened in the inner chamber, which plays a role in sound insulation and noise reduction. It effectively prevents noise from being transmitted through the joint between the back panel and the bottom shell on both sides, improves the user experience, and requires no maintenance.

[0011] In one embodiment, two ribs are provided, which are distributed along the left-right direction of the noise reduction housing, and the two ribs form the first cavity.

[0012] In one embodiment, the ribs are provided in two sets, each set of the ribs includes multiple ribs, and the two ribs in the two sets of the ribs closest to the first air inlet form the first chamber.

[0013] In one embodiment, a connecting channel communicating with the first chamber is provided between the rib and the bottom shell;

[0014] The distance 'a' of the connecting channel along the front-rear direction of the noise-reducing housing is less than or equal to half the distance 'b' between the bottom of the inner cavity and the bottom shell along the front-rear direction.

[0015] In one embodiment, the fitting between the sidewall of the back plate and the bottom shell is misaligned with the projection of the connecting channel in the left-right direction of the noise-reducing housing.

[0016] In one embodiment, the back plate is disposed on the outside of the bottom shell, and the back plate is provided with the rib protruding toward the bottom shell.

[0017] In one embodiment, the rib abuts against the bottom shell;

[0018] The rib has an outer cavity on the side facing away from the bottom shell, and the rib has a connecting port that connects the first cavity and the outer cavity as well as the inner cavity and the outer cavity.

[0019] In one embodiment, the connecting openings on the two sidewalls of the rib are misaligned in the left-right direction of the noise-reducing housing.

[0020] In one embodiment, the fitting area between the back plate and the bottom shell is misaligned with the projection of the communication port in the left-right direction of the noise-reducing housing.

[0021] In one embodiment, one end of the rib along the vertical direction is higher than the first air inlet, and the other end of the rib along the vertical direction is lower than the first air inlet.

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

[0023] A gas water heater, including the noise-reducing housing described in any of the above embodiments.

[0024] The gas water heater described in this utility model has the following advantages compared with the prior art:

[0025] This gas water heater effectively reduces noise and improves the user experience by incorporating a noise-reducing casing. Attached Figure Description

[0026] Figure 1 This is an exploded view of the noise-reducing housing provided in Embodiment 1 of this utility model;

[0027] Figure 2 This is a top view (sectional view) of the noise reduction housing provided in Embodiment 1 of this utility model.

[0028] Figure 3 This is a cross-sectional view (side view) of the noise reduction housing provided in Embodiment 1 of this utility model.

[0029] Figure 4 This is a top view (sectional view) of the noise reduction housing provided in Embodiment 2 of this utility model.

[0030] Figure 5 yes Figure 4 Enlarged view of the structure at point A in the middle.

[0031] In the picture:

[0032] 1. Face shell; 11. Second chamber;

[0033] 2. Bottom shell; 21. First air inlet;

[0034] 3. Back panel; 31. Rib; 32. Inner chamber; 33. First chamber; 34. Connecting passage; 35. Second air inlet; 36. Outer chamber; 37. Connecting opening;

[0035] 4. Fitting area. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] Example 1

[0041] like Figures 1-3 As shown, this embodiment of the present invention provides a noise-reducing housing, which includes a front shell 1, a bottom shell 2, and a back plate 3 arranged sequentially. The front shell 1 and the bottom shell 2 are connected to each other to form a second chamber 11. The second chamber 11 houses components such as a burner, a fan, and a heat exchanger, which generate noise during operation. The bottom shell 2 has a first air inlet 21. The back plate 3 is connected to the bottom shell 2, and there is a gap between the back plate 3 and the bottom shell 2 to form a cavity. A second air inlet 35 communicating with the cavity is provided on one side of the back plate 3. Preferably, the first air inlet 21 is located on one side along the vertical direction of the noise-reducing housing, and the second air inlet 35 is located on the side of the back plate 3 away from the first air inlet 21 along the vertical direction of the noise-reducing housing. Air enters the second chamber 11 through the second air inlet 35 and the first air inlet 21 to enable the operation of the aforementioned components; while noise enters the space between the back plate 3 and the bottom shell 2 through the first air inlet 21.

[0042] To prevent noise from escaping from the joint 4 between the back plate 3 and the bottom shell 2 along the left and right sides of the noise-reducing housing, the bottom plate 2 or the back plate 3 is provided with at least one protruding rib 31. The protruding rib 31 extends in the vertical direction to divide the cavity into a first chamber 33 and an inner chamber 32. The first air inlet 21 is located in the first chamber 33. When noise is transmitted through the first air inlet 21, part of the noise is first blocked by the protruding rib 31 so that the protruding rib 31 has a sound insulation effect; the remaining noise then enters the inner chamber 32, where it is transmitted, so that the inner chamber 32 can dissipate the noise and achieve the purpose of noise reduction.

[0043] The noise-reducing housing has raised ribs 31 on the back plate 3, so that the noise transmitted through the first air inlet 21 is first blocked by the raised ribs 31 to achieve a sound insulation effect. The noise that is not blocked by the raised ribs 31 then enters the inner cavity 32, so that the noise is transmitted and weakened in the inner cavity 32, which plays a role in sound insulation and noise reduction. It effectively prevents noise from being transmitted through the joint 4 on both sides of the back plate 3 and the bottom shell 2, improves the user experience, and requires no maintenance.

[0044] It should be noted that the back plate 3 can be set on the inner or outer side of the bottom shell 2, and the protruding rib 31 can be set on the bottom shell 2 or the back plate 3, as long as a cavity is formed between the back plate 3 and the bottom shell 2, and the protruding rib 31 can divide the cavity into the first chamber 33 and the inner chamber 32. There is no limitation here.

[0045] Preferably, the back plate 3 is provided with a rib 31, the back plate 3 is connected to the side of the bottom shell 2 away from the front shell 1, and there is a gap between the back plate 3 and the bottom shell 2 so that a cavity is formed between the back plate 3 and the bottom shell 2. A second air inlet 35 communicating with the cavity is provided on one side of the back plate 3.

[0046] Optionally, the back plate 3 is provided with two sets of ribs 31 spaced apart in the left-right direction. The two sets of ribs 31 are located on both sides of the first air inlet 21. Each set of ribs 31 contains at least one rib, and each rib 31 extends in the up-down direction and protrudes toward the bottom shell 2. The two ribs 31 in the two sets of ribs 31 that are closer to the first air inlet 21 form the first chamber 33.

[0047] When each group of ribs 31 has one rib 31, the two ribs 31 form an inner cavity 32 between the two side walls of the back plate 3 along the left and right directions, respectively. When each group of ribs 31 has multiple ribs 31, the inner cavity 32 is formed between any two adjacent ribs 31 in each group and between the ribs 31 near the side wall of the back plate 3 in each group and the side wall of the back plate 3. When noise is transmitted through the first air inlet 21, part of the noise is first blocked by the ribs 31 so that the ribs 31 have a sound insulation effect; the remaining noise then enters the inner cavity 32, and the noise is transmitted in the inner cavity 32 so that the inner cavity 32 can consume the noise and achieve the purpose of noise reduction.

[0048] In this embodiment, there is a connecting channel 34 between the rib 31 and the bottom shell 2, which communicates with the first chamber 33. The distance a of the connecting channel 34 along the front-back direction of the noise reduction shell is less than the distance b between the bottom of the inner chamber 32 and the bottom shell 2 along the front-back direction. That is, it can be concluded that the cross-sectional area of ​​the connecting channel 34 (the cross-section of the connecting channel 34 perpendicular to the direction of noise propagation) is less than the cross-sectional area of ​​the inner chamber 32 (the cross-section of the inner chamber 32 perpendicular to the direction of noise propagation). During the transmission process, the noise will be attenuated when it enters the inner chamber 32 with a larger cross-sectional area after passing through the connecting channel 34 with a smaller cross-sectional area. Furthermore, when multiple ribs 31 are provided in each group of ribs 31, for example, if there are two ribs 31 in each group of ribs 31, the noise enters the first inner chamber 32 through the connecting channel 34 between the first rib 31 and the bottom shell 2 in sequence, and then enters the second inner chamber 32 through the connecting channel 34 between the second rib 31 and the bottom shell 2, which can effectively reflect and consume the noise. This structure sets the cross-sectional areas of the connecting channel 34 and the inner chamber 32 to be different, so that the sound waves of noise are reflected and attenuated at the point of abrupt change in cross-section, which can reflect and consume noise and improve the noise reduction effect.

[0049] Optionally, a≤(1 / 2)b, that is, the distance of the connecting channel 34 in the front-to-back direction is set to be less than or equal to the distance between the bottom of the inner cavity 32 and the bottom shell 2 in the front-to-back direction. This structural design can improve the noise reflection and dissipation effect.

[0050] Optionally, the mating point 4 between the back plate 3 and the bottom shell 2 is offset from the projection of the connecting channel 34 in the left-right direction. This structural design prevents noise from being directly transmitted through the mating point 4 after entering the inner cavity 32. Instead, it is first reflected and weakened by the side wall of the back plate 3, significantly improving the noise reduction effect. Optionally, the mating point 4 is recessed backward or protruded forward in the front-back direction, so that the projection of the connecting channel 34 in the left-right direction is not directly opposite the mating point 4. In this embodiment, the mating point 4 is recessed backward in the front-back direction, which increases the cross-sectional area of ​​the inner cavity 32 to improve the noise reduction effect.

[0051] Optionally, the cross section of the rib 31 is V-shaped. The rib 31 is formed by stamping the back plate 3 using a stamping mechanism. That is, the back plate 3 and the rib 31 are integrally formed parts. It is made by sheet metal processing. The sheet metal structure of the back plate 3 can effectively reduce the processing difficulty and processing cost.

[0052] Optionally, one end of the rib 31 in the vertical direction is higher than the first air inlet 21, and the other end of the rib 31 in the vertical direction is lower than the first air inlet 21. This structural design ensures that the first air inlet 21 is completely located between the two sets of ribs 31, so that the noise transmitted through the first air inlet 21 can be effectively blocked by the ribs 31, improving the noise reduction effect. It is understood that the first air inlet 21 is located between the two sets of ribs 31.

[0053] Optionally, the first air inlet 21 can be configured as a louvered structure, consisting of multiple grilles. The passage area of ​​these grilles is smaller than the cross-sectional area of ​​the inner chamber 32. By setting multiple grilles, sound insulation and noise reduction can be effectively achieved, thereby effectively reducing noise. Alternatively, the first air inlet 21 can be configured as multiple small holes, with the passage area of ​​these holes being smaller than the cross-sectional area of ​​the inner chamber 32. These small holes utilize their own perforated plate acoustic resistance to achieve a certain degree of noise reduction. It should be further noted that the above structure sets the passage area to be smaller than the cross-sectional area of ​​the inner chamber 32; this abrupt change in area achieves a noise reduction effect.

[0054] Example 2

[0055] like Figures 4-5 As shown, the noise reduction housing provided in this embodiment has a structure that is basically the same as that of the noise reduction housing in Embodiment 1. For convenience, only the differences are described here.

[0056] In this embodiment, the back plate 3 is disposed on the outside of the bottom shell 2, and the back plate 3 is provided with a protruding rib 31 protruding towards the bottom shell 2; the protruding rib 31 abuts against the bottom shell 2 (that is, there is no connecting channel 34 between the protruding rib 31 and the bottom shell 2), and the two protruding ribs 31 closest to the first air inlet 21 in the two sets of protruding ribs 31 form a first chamber 33; the cross section of the protruding rib 31 is V-shaped, which is composed of two side walls, and the two side walls form an outer chamber 36 on the side facing away from the bottom shell 2. Taking a group of two protruding ribs 31 as an example, in each group of protruding ribs 31, one side wall of the protruding rib 31 near the first air inlet 21 is provided with a connecting port 37 connecting the first chamber 33 and the outer chamber 36, the other side wall of the protruding rib 31 near the first air inlet 21 is provided with a connecting port 37 connecting the inner chamber 32 and the outer chamber 36, and both side walls of the protruding rib 31 away from the first air inlet 21 are provided with a connecting port 37 connecting the inner chamber 32 and the outer chamber 36. When the noise-reducing housing is used in conjunction with the wall on the back panel 3, noise enters the first chamber 33 through the first air inlet 21, then enters the outer chamber 36 through the connecting port 37, then enters the inner chamber 32 through the connecting port 37, then enters the outer chamber 36 again, and finally enters the inner chamber 32. This structure connects multiple chambers sequentially through the connecting port 37 to form a multi-chamber sound-absorbing structure. That is, the noise is attenuated by reflection from multiple chambers, which can achieve a resistive sound absorption effect and improve the noise reduction effect.

[0057] It is understandable that multiple connecting ports 37 are provided on both side walls of the rib 31, which are spaced apart in the vertical direction. The projections of the connecting ports 37 on the two side walls of each rib 31 are staggered in the horizontal direction. By staggering the connecting ports 37, the straight transmission of noise is avoided, which can further improve the noise reduction effect.

[0058] Optionally, the projection of the fitting point 4 between the back plate 3 and the bottom shell 2 and the connecting port 37 in the left and right directions is staggered, which can prevent noise from being transmitted directly through the fitting point 4 between the back plate 3 and the bottom shell 2 after entering the outermost inner cavity 32. Instead, the noise is first blocked and attenuated by the side wall of the back plate 3, which further improves the noise reduction effect.

[0059] Example 3

[0060] The gas water heater provided in this embodiment includes the noise-reducing shell as described in Embodiment 1 or Embodiment 2. By setting the aforementioned noise-reducing shell, the gas water heater can effectively reduce the impact of noise on users and improve their experience.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A noise-reducing housing, characterized in that, It includes a bottom shell (2) and a back plate (3), the back plate (3) and the bottom shell (2) being connected to each other to form a cavity; The bottom shell (2) is provided with a first air inlet (21); The bottom shell (2) or the back plate (3) is provided with at least one rib (31). The rib (31) extends along the vertical direction of the noise reduction shell so that the rib (31) divides the cavity into a first chamber (33) and an inner chamber (32) for consuming noise. The first chamber (33) and the inner chamber (32) are connected. The first air inlet (21) is located in the first chamber (33). A second air inlet (35) connected to the first chamber (33) is provided on one side of the back plate (3).

2. The noise reducing shell of claim 1, wherein, Two ribs (31) are provided, and the two ribs (31) are distributed along the left and right direction of the noise reduction housing, and the two ribs (31) form the first chamber (33).

3. The noise reducing housing of claim 1, wherein, The ribs (31) are provided in two sets, and each set of ribs (31) includes multiple ribs (31). The two ribs (31) in the two sets of ribs (31) that are close to the first air inlet (21) constitute the first chamber (33).

4. The noise reducing housing of claim 1, wherein, There is a connecting channel (34) between the rib (31) and the bottom shell (2) that communicates with the first chamber (33); The distance a of the connecting channel (34) along the front-back direction of the noise reduction housing is less than or equal to half the distance b between the bottom of the inner cavity (32) and the bottom shell (2) along the front-back direction.

5. The noise-reducing housing according to claim 4, characterized in that, The fitting point (4) between the side wall of the back plate (3) and the bottom shell (2) and the connecting channel (34) are misaligned in the left and right directions of the noise reduction shell.

6. The noise reducing shell of claim 1, wherein, The back plate (3) is disposed on the outside of the bottom shell (2), and the back plate (3) is provided with the protruding rib (31) protruding toward the bottom shell (2).

7. The noise reducing shell of claim 6, wherein, The rib (31) abuts against the bottom shell (2); The rib (31) has an outer cavity (36) on the side facing away from the bottom shell (2), and the rib (31) has a communication port (37) connecting the first cavity (33) and the outer cavity (36) as well as connecting the inner cavity (32) and the outer cavity (36).

8. The noise reducing shell of claim 7, wherein, The connecting openings (37) on the two side walls of the rib (31) are misaligned in the left-right direction of the noise reduction housing.

9. The noise-reducing housing according to claim 7, characterized in that, The fitting point (4) between the back plate (3) and the bottom shell (2) and the connecting port (37) are misaligned in the left-right direction of the noise reduction housing.

10. The noise-reducing housing according to any one of claims 1-9, characterized in that, One end of the rib (31) along the vertical direction is higher than the first air inlet (21), and the other end of the rib (31) along the vertical direction is lower than the first air inlet (21).

11. A gas water heater characterised by, Includes the noise-reducing housing as described in any one of claims 1-10.

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