Noise reduction device and gas water heater

Abstract

The utility model relates to the technical field of water heaters, in particular to a noise reduction device and a gas water heater, the noise reduction device comprises a shell, an air flow cavity is formed in the shell, a first air port and a second air port are formed in the outer wall, and the first air port is used for being communicated with an air inlet in a butt joint mode; a first sound insulation cylinder with a first flow channel and a second sound insulation cylinder with a second flow channel are arranged in the airflow cavity; the first air port is communicated with the second air port through the first flow channel, the airflow cavity and the second flow channel in sequence. Therefore, the noise reduction device capable of reducing the noise transmitted from the air inlet of the combustor shell is formed.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, and more specifically to a noise reduction device and a gas water heater. Background Art

[0002] The gas water heater is one of the commonly used household appliances at present, which includes a burner housing, a burner assembly placed inside the burner housing, a heat exchanger, a fan assembly, etc.

[0003] When the gas water heater is working, it is necessary to introduce external air into the burner assembly inside the burner housing to participate in combustion. Therefore, an air inlet for air to enter is provided on the burner housing. It is found in actual use that when the gas water heater is working, the noise generated by the operation of its internal burner assembly, heat exchanger and fan assembly is easily transmitted outwards from the air inlet of the burner housing, resulting in a poor user experience. Therefore, a device capable of weakening the noise transmitted from the air inlet is needed. Summary of the Utility Model

[0004] One of the purposes of the present utility model is to provide, in view of the deficiencies of the prior art: a noise reduction device capable of weakening the noise transmitted from the air inlet of the burner housing.

[0005] Another purpose of the present utility model is to provide a gas water heater having the above noise reduction device.

[0006] The technical solution measures of the present utility model are as follows:

[0007] A noise reduction device for weakening the noise transmitted from the air inlet of the burner housing, which includes:

[0008] A housing having an air flow cavity inside, with a first air port and a second air port provided on the outer wall, and the first air port is used to be connected and communicated with the air inlet;

[0009] A first sound insulation cylinder with a first flow channel and a second sound insulation cylinder with a second flow channel are provided in the air flow cavity;

[0010] The first air port is connected and communicated with the second air port through the first flow channel, the air flow cavity and the second flow channel in sequence.

[0011] Further as a preferred solution, a number of first diversion holes are provided on the side wall of the first flow channel for connecting and communicating the first flow channel with the air flow cavity.

[0012] Further as a preferred solution, a number of second diversion holes are provided on the side wall of the second flow channel for connecting and communicating the second flow channel with the air flow cavity.

[0013] Further as a preferred solution, a number of partition plates are provided in the air flow cavity.

[0014] Further as a preferred solution, the outer shell includes: a first outer wall and a second outer wall opposite to the first outer wall;

[0015] The first air port is arranged on the first outer wall, and the second air port is arranged on the second outer wall.

[0016] Further as a preferred solution, a connecting portion is provided on the outer surface of the outer shell.

[0017] Further as a preferred solution, there are at least two connecting portions, and the two connecting portions are respectively located on both sides of the outer shell and are arranged in opposition.

[0018] The gas water heater includes:

[0019] A burner housing having a receiving cavity and an air inlet for allowing air to enter the receiving cavity;

[0020] In any of the above solutions, the noise reduction device, and the first air port of the noise reduction device is docked and communicated with one end of the air inlet.

[0021] Further as a preferred solution, the noise reduction device is installed in the receiving cavity, the air inlet has a first end communicating with the receiving cavity, and the first air port is docked and communicated with the first end;

[0022] The second air port in the noise reduction device is communicated with the receiving cavity.

[0023] Further as a preferred solution, the first outer wall of the noise reduction device fits against the side wall of the receiving cavity and covers the end of the air inlet communicating with the receiving cavity;

[0024] And the first outer wall is provided with: a sunk groove with the notch facing the air inlet;

[0025] The first air port is arranged at the bottom of the sunk groove and is communicated with the air inlet through the sunk groove.

[0026] The main beneficial effects of the above technical solutions are as follows:

[0027] A noise reduction device capable of weakening noise is formed. By adapting and docking the first air port of the noise reduction device with the air inlet of the burner housing, the noise transmitted from the air inlet of the burner housing can be weakened, optimizing the use experience of the gas water heater. Among them, the noise reduction device absorbs, scatters or reflects sound waves by arranging the first sound insulation cylinder and the second sound insulation cylinder, thereby changing the noise propagation path and weakening the noise intensity, and weakening the transmitted noise.

[0028] Further or more detailed beneficial effects will be described in combination with specific embodiments in the specific implementation manners. Description of the Drawings

[0029] The following further describes the present invention with reference to the drawings:

[0030] Figure 1 Schematic installation diagram of the noise reduction device in a gas water heater.

[0031] Figure 2 Schematic structural diagram of the noise reduction device.

[0032] Figure 3 Schematic cross-sectional view of the noise reduction device.

[0033] As shown in the figure: burner housing - 1, accommodation cavity - 1.1, air inlet - 1.2, noise reduction device - 2, outer shell - 2.1, first outer wall - 2.1a, second outer wall - 2.1b, air flow cavity - 2.11, first air port - 2.12, second air port - 2.13, sink - 2.14, connecting part - 2.15, first sound insulation cylinder - 2.2, first flow channel - 2.21, first diversion hole - 2.22, second sound insulation cylinder - 2.3, second flow channel - 2.31, second diversion hole - 2.32, partition - 2.4. Specific implementation mode

[0034] The following is a specific example description of the present utility model in combination with embodiments:

[0035] Embodiment:

[0036] The gas water heater, as shown in the appendix Figure 1 mainly includes a burner housing 1 composed of plate members. An accommodation cavity 1.1 is formed inside the burner housing 1 for accommodating and installing components such as a burner, a heat exchanger, and a smoke exhaust hood. At the same time, an air inlet 1.2 is provided on the burner housing 1, which is a through hole provided on the burner housing 1. One end of the through hole extends to the outer surface of the burner housing 1 and is connected to the external space of the burner housing 1; the other end extends to the side wall of the accommodation cavity 1.1 and is connected to the accommodation cavity 1.1; so that external air can enter the accommodation cavity 1.1 from the air inlet 1.2. When the gas water heater works, external air enters the accommodation cavity 1.1 from the air inlet 1.2 to participate in the combustion of the burner, forming high-temperature flue gas. At the same time, the noise generated by the operation of components such as the burner in the accommodation cavity 1.1 is also easily transmitted outwards from the air inlet 1.2.

[0037] Based on this, a noise reduction device is proposed in this embodiment, which is used to weaken the noise transmitted from the air inlet 1.2 of the burner housing 1. Specifically, it is used to weaken the noise transmitted outwards from the burner housing 1 through the air inlet 1.2.

[0038] Specifically, as shown in the appendix Figure 2 to appendix Figure 3As shown in the figure, the noise reduction device 2 in this embodiment includes a housing 2.1. An air flow chamber 2.11 is formed as a cavity inside the housing 2.1, and a first air port 2.12 and a second air port 2.13 are provided at intervals on the outer wall of the housing 2.1. Among them, both the first air port 2.12 and the second air port 2.13 are through holes for connecting the external air to the air flow chamber 2.11, and the first air port 2.12 is used to be butt-connected to the air inlet 1.2.

[0039] As shown in the appendix Figure 3 As shown in the figure, the air flow chamber 2.11 is further provided with: a first sound insulation cylinder 2.2 having a first flow channel 2.21, and a second sound insulation cylinder 2.3 having a second flow channel 2.31. Among them, the first flow channel 2.21 is a hole formed in the first sound insulation cylinder 2.2 and having both ends in a through state; the second flow channel 2.31 is a hole formed in the second sound insulation cylinder 2.3 and having both ends in a through state.

[0040] As shown in the appendix Figure 3 As shown in the figure, in this embodiment, the first air port 2.12 is connected to the second air port 2.13 through the first flow channel 2.21, the air flow chamber 2.11, and the second flow channel 2.31 in sequence. That is: one end of the first flow channel 2.21 is butt-connected and communicated with the first air port 2.12, the other end is placed in the air flow chamber 2.11, and is in an open state and communicated with the air flow chamber 2.11; one end of the second flow channel 2.31 is butt-connected and communicated with the second air port 2.13, the other end is placed in the air flow chamber 2.11, and is in an open state and communicated with the air flow chamber 2.11.

[0041] In this embodiment, the first flow channel 2.21 and the second flow channel 2.31 are preferably arranged non-alignedly, that is, the port of the first flow channel 2.21 placed in the air flow chamber 2.11 and the port of the second flow channel 2.31 placed in the air flow chamber 2.11 are arranged non-alignedly.

[0042] In this way, when as shown in the appendix Figure 1As shown in the figure, the noise reduction device 2 is fixedly connected to the burner housing 1. When the first air port 2.12 is butt-connected and communicated with the air inlet 1.2, the external air of the burner housing 1 can pass through the air inlet 1.2, the first air port 2.12, the first flow channel 2.21, the air flow cavity 2.11, the second flow channel 2.31 and the second air port 2.13 to enter the accommodation cavity 1.1 for air supply; the noise needs to pass through the channel formed by the first flow channel 2.21, the air flow cavity 2.11 and the second flow channel 2.31 to be discharged outwards. After the noise enters the outer shell 2.1, the side wall of the air flow cavity 2.11, the first sound insulation cylinder 2.2 and the second sound insulation cylinder 2.3 will all absorb, scatter or reflect the sound waves, thereby changing the noise propagation path and weakening the noise intensity, and weakening the outgoing noise. At the same time, by setting the first flow channel 2.21 and the second flow channel 2.31, and preferably arranging the first flow channel 2.21 and the second flow channel 2.31 in a non-aligned manner, the path of the flow channel between the first air port 2.12 and the second air port 2.13 can be extended, and further the noise propagation path can be extended to better attenuate the noise and weaken the outgoing noise.

[0043] Further, as shown in the attached Figure 2 and the attached Figure 3 figure, the outer shell 2.1 in this embodiment includes: a first outer wall 2.1a and a second outer wall 2.1b. Among them, as shown in the attached Figure 3 figure, the first outer wall 2.1a is the upper end wall of the outer shell 2.1, and the second outer wall 2.1b is the lower end wall located at the lower end of the outer shell 2.1 and arranged in alignment with the first outer wall 2.1a. The first air port 2.12 is arranged on the first outer wall 2.1a, and the second air port 2.13 is arranged on the second outer wall 2.1b. While weakening the noise as described above, by arranging the two air ports on the opposite side walls respectively, the air flow can enter more smoothly from one air port and exit from the other air port; when the noise reduction device 2 is fixedly connected to the burner housing 1 and the first air port 2.12 is butt-connected and communicated with the air inlet 1.2, the air can enter the accommodation cavity 1.1 more smoothly from the outside.

[0044] Further, as shown in the attached Figure 3 figure, a plurality of first diversion holes 2.22 can be provided on the side wall of the first flow channel 2.21 for connecting the first flow channel 2.21 and the air flow cavity 2.11. At this time, the noise propagating in the first flow channel 2.21 will disperse into the air flow cavity 2.11 from the first diversion holes 2.22, alleviating the concentrated propagation of the noise. The dispersed noise can collide with the side wall of the air flow cavity 2.11 and the sound insulation cylinder over a large area to achieve attenuation; moreover, by setting the first diversion holes 2.22, the air flow can flow more smoothly between the first air port 2.12 and the air flow cavity 2.11.

[0045] Similarly, as shown in the attached Figure 3As shown in FIG. 1 , a plurality of second flow diversion holes 2.32 may be provided on the side wall of the second flow channel 2.31, which allow the second flow channel 2.31 to communicate with the air flow cavity 2.11.

[0046] In order to make the noise be better absorbed, scattered or reflected, so as to achieve noise attenuation. Figure 3 As shown in , a plurality of partitions 2.4 may be provided in the airflow cavity 2.11 to enhance the noise blocking effect and reduce the transmitted noise.

[0047] In this embodiment, in the direction from the first air port 2.12 to the second air port 2.13, a plurality of partitions 2.4 divide the air flow cavity 2.11 into three cavities spaced apart from each other. Among them, a cavity close to the first air port 2.12 is connected to the port of the second flow channel 2.31 and is also connected to the first flow channel 2.21 through the first flow diversion hole 2.22; a cavity close to the second air port 2.13 is connected to the port of the first flow channel 2.21 and is also connected to the second flow channel 2.31 through the second flow diversion hole 2.32.

[0048] Furthermore, as attached Figure 2 As shown in the figure, in order to avoid the cavity structure inside the shell 2.1, the present embodiment preferably provides a connecting portion 2.15 on the outer surface of the shell 2.1. The connecting portion 2.15 is a protruding structure provided on the outer surface of the shell 2.1. For example, a threaded hole is provided thereon so that the connecting portion 2.15 can be fixed to the burner housing 1 by screws, thereby fixing the shell 2.1 to the burner housing 1.

[0049] There are at least two connecting parts 2.15, and the two connecting parts 2.15 are respectively located on both sides of the housing 2.1 and are arranged in opposite positions. Figure 2 As shown in FIG. 2 , two connection parts 2.15 are arranged on the left side of the housing 2.1, and two connection parts 2.15 are also arranged on the right side of the housing 2.1 opposite to the left side of the housing 2.1, so as to fix the housing 2.1 more stably.

[0050] When the noise reduction device 2 described above is fixed to the burner housing 1 and the first air port 2.12 is connected to the air inlet 1.2, the noise reduction device 2 can be installed on the outer surface of the burner housing 1.

[0051] Considering the aesthetics and the protection of the noise reduction device 2, in this embodiment, as shown in the attached Figure 1 As shown in the figure, the noise reduction device 2 is preferably installed in the accommodating chamber 1.1, and covers one end of the air inlet 1.2 connected to the accommodating chamber 1.1, and the first air port 2.12 is connected to the air inlet 1.2, and the second air port 2.13 in the noise reduction device is connected to the accommodating chamber 1.1.

[0052] At this time, when the gas water heater is operating, external air enters the first air port 2.12 from the air inlet 1.2, and flows into the accommodation chamber 1.1 through the first flow channel 2.21, the air flow chamber 2.11, the second flow channel 2.31, and the second air port 2.13, for the burner in the accommodation chamber 1.1 to burn.

[0053] The noise generated when parts such as the burner in the accommodation chamber 1.1 are operating is transmitted outwards through the second air port 2.13, the second flow channel 2.31, the air flow chamber 2.11, the first flow channel 2.21, the first air port 2.12, and the air inlet 1.2. Through the above settings, the noise can be weakened during the transmission process, the transmitted noise is weakened, and the usage experience is optimized.

[0054] Furthermore, at this time, the first outer wall 2.1a of the noise reduction device is preferably attached to the side wall of the accommodation chamber 1.1 and covers one end of the air inlet 1.2 communicating with the accommodation chamber 1.1; and the first outer wall 2.1a is provided with a sink 2.14 with the notch facing the air inlet 1.2; the first air port 2.12 is arranged at the bottom of the sink 2.14 and is connected to the air inlet 1.2 through the sink 2.14.

[0055] In this way, during the process of the noise being transmitted from the first air port 2.12 to the air inlet 1.2, part of the noise will spread out to the sink 2.14, alleviating the surging of the noise from the first air port 2.12 to the air inlet 1.2; moreover, the noise spreading to the sink 2.14 has a longer propagation path and can better achieve noise attenuation.

[0056] Based on different air intake requirements, the air inlet 1.2 may be arranged at different positions of the burner housing 1, such as the top, side, or back of the burner housing 1; when the position of the air inlet 1.2 is different, the noise reduction device 2 is connected to the burner housing 1 adapting to the position of the air inlet 1.2, and as described above, the noise transmitted from the air inlet 1.2 of the burner housing 1 is weakened.

[0057] The above are only the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Additionally, in the embodiments of the present utility model, the terms "vertical", "horizontal", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. It should be further noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. in the description should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0058] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A noise reduction device for reducing the noise emitted from an air inlet (1.2) of a burner housing (1), characterized in that: include: A shell (2.1) having an air flow cavity (2.11) inside thereof, and an outer wall thereof provided with a first air port (2.12) and a second air port (2.13), wherein the first air port (2.12) is used for docking and communicating with the air inlet (1.2); The airflow cavity (2.11) is provided with: a first sound insulation tube (2.2) having a first flow channel (2.21), and a second sound insulation tube (2.3) having a second flow channel (2.31); The first air port (2.12) is connected to the second air port (2.13) through the first flow channel (2.21), the air flow cavity (2.11) and the second flow channel (2.31) in sequence.

2. The noise reduction device according to claim 1, characterized in that: A plurality of first flow diversion holes (2.22) are provided on the side wall of the first flow channel (2.21), which allow the first flow channel (2.21) to communicate with the air flow cavity (2.11).

3. The noise reduction device according to claim 1, characterized in that: A plurality of second flow diversion holes (2.32) are provided on the side wall of the second flow channel (2.31), which allow the second flow channel (2.31) to communicate with the air flow cavity (2.11).

4. The noise reduction device according to claim 1, characterized in that: A plurality of partitions (2.4) are arranged in the airflow cavity (2.11).

5. The noise reduction device according to any one of claims 1 to 4, characterized in that: The housing (2.1) comprises: a first outer wall (2.1a), and a second outer wall (2.1b) located opposite to the first outer wall (2.1a); The first air port (2.12) is arranged on the first outer wall (2.1a), and the second air port (2.13) is arranged on the second outer wall (2.1b).

6. The noise reduction device according to any one of claims 1 to 4, characterized in that: A connecting portion (2.15) is provided on the outer surface of the housing (2.1).

7. The noise reduction device according to claim 6, characterized in that: There are at least two connecting parts (2.15), and the two connecting parts (2.15) are respectively located on two sides of the outer shell (2.1) and are arranged in a symmetrical manner.

8. A gas water heater, characterized in that: include: A burner housing (1) having a receiving chamber (1.1) and an air inlet (1.2) for air to enter the receiving chamber (1.1); The noise reduction device according to any one of claims 1 to 7, wherein the first air port (2.12) of the noise reduction device is butted against and communicated with one end of the air inlet (1.2).

9. The gas water heater according to claim 8, characterized in that: The noise reduction device is installed in the accommodating chamber (1.1), the air inlet (1.2) has a first end connected to the accommodating chamber (1.1), and the first air port (2.12) is butt-jointed with and connected to the first end; The second air port (2.13) of the noise reduction device is in communication with the accommodating chamber (1.1).

10. The gas water heater according to claim 9, characterized in that: The first outer wall (2.1a) of the noise reduction device is attached to the side wall of the accommodating chamber (1.1) and covers the end of the air inlet (1.2) connected to the accommodating chamber (1.1); The first outer wall (2.1a) is provided with: a sink (2.14) with a notch facing the air inlet (1.2); The first air port (2.12) is arranged at the bottom of the trough (2.14), and is connected to the air inlet (1.2) through the trough (2.14).

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