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 is arranged in the airflow cavity, a first flow channel is formed in the first sound insulation cylinder, one end of the first flow channel is in butt joint with and communicated with the first air port, and the other end of the first flow channel is closed. A second flow channel is formed in the second sound insulation cylinder, one end of the second flow channel is in butt joint with and communicated with the second air port, and the other end of the second flow channel is closed; a first flow guide hole is formed in the side wall of the first flow channel, and a second flow guide hole is formed in the side wall of the second flow channel; the first flow guide hole and the second flow guide hole are arranged in a non-alignment mode. 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 in the burner housing, a heat exchanger and a fan assembly.

[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, so an air inlet for air entry is provided on the burner housing. However, in actual use, it is found that when the gas water heater is working, the noise generated by the operation of the internal burner assembly, heat exchanger and fan assembly is easy to be transmitted outward from the air inlet of the burner housing, resulting in a bad user experience. Therefore, a device that can reduce the noise transmitted from the air inlet is needed. Utility Model Content

[0004] One of the purposes of the utility model is to address the deficiencies of the prior art and provide a noise reduction device capable of reducing the noise transmitted from the air inlet of a burner housing.

[0005] The second purpose of the utility model is to provide a gas water heater with the above-mentioned noise reduction device.

[0006] The technical solutions of the utility model are as follows:

[0007] The noise reduction device is used to reduce the noise transmitted from the air inlet of the burner housing, including:

[0008] The housing has an air flow cavity inside and a first air port and a second air port on the outer wall, wherein the first air port is used to connect with the air inlet;

[0009] The airflow cavity is provided with:

[0010] A first sound insulation tube having a first flow channel therein, one end of the first flow channel being butted against and connected to the first air port, and the other end being closed;

[0011] A second sound insulation tube has a second flow channel therein, one end of the second flow channel is butted against and connected to the second air port, and the other end is closed;

[0012] The side wall of the first flow channel is provided with a first flow guide hole, and the side wall of the second flow channel is provided with a second flow guide hole;

[0013] The first guide hole and the second guide hole are arranged in a non-aligned manner.

[0014] As a further preferred solution, the first sound insulation tube has: a first side surface facing away from the second sound insulation tube;

[0015] The second sound insulation tube has: a second side surface facing away from the first sound insulation tube;

[0016] The first flow guide hole is arranged on the first side surface, or the second flow guide hole is arranged on the second side surface.

[0017] As a further preferred solution, the first guide hole is arranged on the first side surface;

[0018] A plurality of second flow guide holes are distributed at intervals around the second flow channel;

[0019] A plurality of first flow guide holes are distributed at intervals on the first side surface.

[0020] As a further preferred solution, the second guide hole is arranged on the second side surface;

[0021] A plurality of first flow guide holes are distributed at intervals around the first flow channel;

[0022] A plurality of second flow guide holes are distributed at intervals on the second side surface.

[0023] As a further preferred solution, the other end of the first sound insulation tube extends to the side wall of the airflow cavity, and has a portion connected to the side wall;

[0024] And / or, the other end of the second sound insulation tube extends to the side wall of the airflow cavity and has a portion connected to the side wall.

[0025] As a further preferred solution, a connecting portion is provided on the outer surface of the housing.

[0026] As a further preferred solution, there are at least two connecting parts, which are respectively located on two sides of the shell and arranged in opposite positions.

[0027] Gas water heater, including:

[0028] A burner housing having a receiving cavity and an air inlet for air to enter the receiving cavity;

[0029] In the noise reduction device described in any of the above schemes, the first air port of the noise reduction device is connected to and communicated with one end of the air inlet.

[0030] As a further preferred solution, the noise reduction device is installed in the accommodating cavity, the air inlet has a first end connected to the accommodating cavity, and the first air port is connected to and communicated with the first end;

[0031] The second air port in the noise reduction device is communicated with the accommodating cavity.

[0032] As a further preferred solution, the first outer wall of the noise reduction device is attached to the side wall of the accommodating cavity and covers the end of the air inlet connected to the accommodating cavity;

[0033] The first outer wall is provided with: a sinking groove with a notch facing the air inlet;

[0034] The first air port is arranged at the bottom of the sink and is connected with the air inlet through the sink.

[0035] The main beneficial effects of the above technical solution are:

[0036] A noise reduction device capable of reducing noise is formed, and the noise transmitted from the air inlet of the burner shell can be reduced by adapting the first air port thereof to the air inlet connected to the burner shell, thereby optimizing the user experience of the gas water heater. The noise reduction device absorbs, scatters or reflects sound waves by setting a first sound insulation tube and a second sound insulation tube, thereby changing the noise propagation path and reducing the noise intensity, thereby reducing the transmitted noise; at the same time, by sealing the end of the sound insulation tube away from the air port, the noise can be better blocked, thereby better reducing the transmitted noise; and, by non-alignedly setting the first guide hole and the second guide hole, the connecting channel between the first air port and the second air port is extended, thereby extending the propagation path of the noise between the first air port and the second air port, so that the noise is more attenuated, thereby further reducing the transmitted noise.

[0037] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The utility model is further described below in conjunction with the accompanying drawings:

[0039] Figure 1 This is a schematic diagram of the installation of a noise reduction device in a gas water heater.

[0040] Figure 2 Schematic diagram of the noise reduction device structure.

[0041] Figure 3 It is a cross-sectional schematic diagram of the noise reduction device.

[0042] As shown in the figure: burner shell-1, accommodating chamber-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 chamber-2.11, first air port-2.12, second air port-2.13, sink-2.14, connecting part-2.15, first sound insulation tube-2.2, first flow channel-2.21, first guide hole-2.22, second sound insulation tube-2.3, second flow channel-2.31, second guide hole-2.32. DETAILED DESCRIPTION

[0043] The present invention is specifically described below with reference to the following embodiments:

[0044] Example:

[0045] Gas water heater, such as Figure 1 As shown in FIG. 1 , the burner housing 1 mainly comprises a burner housing 1 formed of a plate member, and an accommodating 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.

[0046] At the same time, the burner housing 1 is provided with an air inlet 1.2, which is a through hole arranged on the burner housing 1, one end of which 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 accommodating chamber 1.1 and is connected to the accommodating chamber 1.1; so that the external air can enter the accommodating chamber 1.1 from the air inlet 1.2. When the gas water heater is working, the external air enters the accommodating chamber 1.1 from the air inlet 1.2 to participate in the combustion of the burner and form high-temperature flue gas. At the same time, the noise generated by the operation of the components of the burner and the like in the accommodating chamber 1.1 is also easily transmitted to the outside from the air inlet 1.2.

[0047] Based on this, a noise reduction device is proposed in this embodiment, which is used to reduce the noise transmitted from the air inlet 1.2 of the burner housing 1. Specifically, it is used to reduce the noise transmitted from the burner housing 1 through the air inlet 1.2.

[0048] Specifically, as attached Figure 2 To Attachment Figure 3 As shown in the figure, the noise reduction device 2 in this embodiment includes a housing 2.1, the housing 2.1 has an airflow cavity 2.11 formed in a hollow manner, and the outer wall of the housing 2.1 is provided with a first air port 2.12 and a second air port 2.13 spaced apart from each other. The first air port 2.12 and the second air port 2.13 are both through holes for connecting the external air with the airflow cavity 2.11, and the first air port 2.12 is used to connect with the air inlet 1.2.

[0049] As attached Figure 3 As shown in FIG. 2 , a first sound insulation tube 2.2 and a second sound insulation tube 2.3 are also provided in the air flow cavity 2.11.

[0050] The first sound insulation tube 2.2 covers the first air port 2.12 in the air flow cavity 2.11, and a first flow channel 2.21 is formed in the first sound insulation tube 2.2. One end of the first flow channel 2.21 (for example, attached Figure 3 The upper end of the first flow channel 2.21 in the middle) is connected to the first air port 2.12 and communicates with the first air port 2.12; the other end of the first flow channel 2.21 (for example, the upper end of the first flow channel 2.21) is connected to the first air port 2.12 and communicates with the first air port 2.12; Figure 3The lower end of the first flow channel 2.21 is closed.

[0051] The second sound insulation tube 2.3 covers the second air port 2.13 in the air flow cavity 2.11, and a second flow channel 2.31 is formed in the second sound insulation tube 2.3. Figure 3 The lower end of the second flow channel 2.31 in the middle) is connected to the second air port 2.13 and communicates with the second air port 2.13; the other end of the second flow channel 2.31 (for example, the lower end of the second flow channel 2.31) is connected to the second air port 2.13; Figure 3 The upper end of the second flow channel 2.31 is closed.

[0052] Meanwhile, the side wall of the first flow channel 2.21 is provided with a first guide hole 2.22 for connecting the first flow channel 2.21 with the airflow cavity 2.11, and the side wall of the second flow channel 2.31 is provided with a second guide hole 2.32 for connecting the second flow channel 2.31 with the airflow cavity 2.11.

[0053] Furthermore, the first guide hole 2.22 and the second guide hole 2.32 are arranged in a non-aligned manner.

[0054] Implementation: The first air port 2.12 is connected to the second air port 2.13 through the first flow channel 2.21, the first flow guide hole 2.22, the air flow cavity 2.11, the second flow guide hole 2.32 and the second flow channel 2.31 in sequence.

[0055] In this way, as attached Figure 1 As shown in the figure, the noise reduction device 2 is fixedly connected to the burner housing 1, and when the first air port 2.12 is connected to the air inlet 1.2, the air outside 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 first guide hole 2.22, the air flow cavity 2.11, the second guide hole 2.32, the second flow channel 2.31 and the second air port 2.13 to enter the accommodating cavity 1.1 for air supply; the noise needs to pass through the channel (i.e., the propagation path of the noise) formed by the first flow channel 2.21, the first guide hole 2.22, the air flow cavity 2.11, the second guide hole 2.32 and the second flow channel 2.31 to be discharged to the outside (as shown in the attached figure). Figure 3 As shown by the middle arrow, after the noise enters the housing 2.1, the side wall of the airflow cavity 2.11, the first sound insulation tube 2.2, and the second sound insulation tube 2.3 will absorb, scatter or reflect the sound waves, thereby changing the noise propagation path and reducing the noise intensity, thereby reducing the transmitted noise. Moreover, by arranging the first guide hole 2.22 and the second guide hole 2.32 in a non-aligned manner, it is prevented that, for example, the noise is directly and quickly transmitted into the second guide hole 2.32 after being transmitted from the first guide hole 2.22, so that the noise propagation path can be extended and the noise can be better attenuated.

[0056] In this embodiment, in order to further extend the noise propagation path and improve the noise attenuation effect, the first guide hole 2.22 can be set on the first side of the first sound insulation tube 2.2 facing away from the second sound insulation tube 2.3; the second guide hole 2.32 can also be set on the second side of the second sound insulation tube 2.3 facing away from the first sound insulation tube 2.2.

[0057] When the first flow guide holes 2.22 are arranged on the first side surface, a plurality of second flow guide holes 2.32 are distributed at intervals around the second flow channel 2.31; a plurality of first flow guide holes 2.22 are distributed at intervals on the first side surface.

[0058] When the second flow guide holes 2.32 are arranged on the second side surface, a plurality of first flow guide holes 2.22 are distributed at intervals around the first flow channel 2.21; and a plurality of second flow guide holes 2.32 are distributed at intervals on the second side surface.

[0059] In this way, the noise propagating in the flow channel will be transmitted from the guide holes to the airflow cavity 2.11 in a more dispersed manner, alleviating the concentrated propagation of the noise. The dispersed noise can collide with the side walls and sound insulation tube of the airflow cavity 2.11 over a large area to achieve attenuation. Moreover, by setting a plurality of first guide holes 2.22 and second guide holes 2.32, the airflow can flow more smoothly between the air port and the airflow cavity 2.11.

[0060] Furthermore, as attached Figure 2 and attached Figure 3 As shown in the figure, the housing 2.1 in this embodiment includes: a first outer wall 2.1a and a second outer wall 2.1b. Figure 3 As shown in the 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 a counterposition 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 reducing the noise as described above, the two air ports are arranged on the two side walls at opposite positions, respectively, so that the air flow can enter from one air port more smoothly and exit from the other air port more smoothly; when the noise reduction device 2 is fixedly connected to the burner shell 1, and the first air port 2.12 is connected to the air inlet 1.2, the air can enter the accommodating cavity 1.1 more smoothly from the outside.

[0061] 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 may be provided in the airflow cavity 2.11 to enhance the noise blocking effect and reduce the transmitted noise.

[0062] Furthermore, as attached Figure 2As 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] At this time, when the gas water heater is working, external air enters the first air port 2.12 from the air inlet 1.2, and flows into the accommodating chamber 1.1 through 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, for combustion by the burner in the accommodating chamber 1.1.

[0067] The noise generated by the burner and other parts in the accommodating chamber 1.1 when working is transmitted outward 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 arrangement, the noise can be reduced during the noise transmission process, the transmitted noise is reduced, and the user experience is optimized.

[0068] Furthermore, at this time, the first outer wall 2.1a of the noise reduction device is preferably 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; and the first outer wall 2.1a is provided with: a sink groove 2.14 with a notch facing the air inlet 1.2; the first air port 2.12 is arranged at the bottom of the sink groove 2.14, and is connected to the air inlet 1.2 through the sink groove 2.14.

[0069] In this way, when the noise is transmitted from the first air port 2.12 to the air inlet 1.2, part of the noise will be dispersed into the sink 2.14, alleviating the surging of noise from the first air port 2.12 to the air inlet 1.2; moreover, the noise dispersed into the sink 2.14 has a longer transmission path, which can better achieve noise attenuation.

[0070] Based on different air intake requirements, the air intake port 1.2 may be set 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 intake port 1.2 is different, the noise reduction device 2 is connected to the burner housing 1 to adapt to the position of the air intake port 1.2, and as described above, to reduce the noise transmitted from the air intake port 1.2 of the burner housing 1.

[0071] The above is only a preferred embodiment of the utility model, and does not limit the scope of the utility model. In addition, the terms "vertical", "horizontal", "front", "rear", etc. mentioned in the embodiments of the utility model indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product is usually placed when in use, which is only for the convenience of describing the 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 therefore cannot be understood as a limitation of the utility model. It should be further explained that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like in the description should be understood in a broad sense, for example, "connection" 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 connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances. The utility model will be described in detail with reference to the drawings and in combination with the embodiments.

[0072] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention 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 chamber (2.11) is provided with: A first sound insulation tube (2.2), having a first flow channel (2.21) therein, one end of the first flow channel (2.21) being butted against and connected to the first air port (2.12), and the other end being closed; A second sound insulation tube (2.3) having a second flow channel (2.31) therein, one end of the second flow channel (2.31) being butted against and connected to the second air port (2.13), and the other end being closed; The side wall of the first flow channel (2.21) is provided with a first flow guide hole (2.22), and the side wall of the second flow channel (2.31) is provided with a second flow guide hole (2.32); The first flow guide hole (2.22) and the second flow guide hole (2.32) are arranged in a non-aligned manner.

2. The noise reduction device according to claim 1, characterized in that: The first sound insulation tube (2.2) comprises: a first side surface facing away from the second sound insulation tube (2.3); The second sound insulation tube (2.3) comprises: a second side surface facing away from the first sound insulation tube (2.2); The first flow guide hole (2.22) is arranged on the first side surface, or the second flow guide hole (2.32) is arranged on the second side surface.

3. The noise reduction device according to claim 2, characterized in that: The first guide hole (2.22) is arranged on the first side surface; A plurality of the second flow guide holes (2.32) are distributed at intervals around the second flow channel (2.31); A plurality of the first flow guide holes (2.22) are distributed at intervals on the first side surface.

4. The noise reduction device according to claim 2, characterized in that: The second guide hole (2.32) is arranged on the second side surface; A plurality of the first flow guide holes (2.22) are distributed at intervals around the first flow channel (2.21); A plurality of the second flow guide holes (2.32) are distributed at intervals on the second side surface.

5. The noise reduction device according to any one of claims 1 to 4, characterized in that: The other end of the first sound insulation tube (2.2) extends to the side wall of the airflow cavity (2.11), and has a portion connected to the side wall; And / or, the other end of the second sound insulation tube (2.3) extends to the side wall of the airflow cavity (2.11), and has a portion connected to the side wall.

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) in 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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