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 is used for weakening noise transmitted from a gas inlet of a combustor shell, the noise reduction device comprises a shell, a first gas port and a second gas port are arranged on the outer wall of the shell, the interior of the shell is provided with a gas flow cavity, and the first gas port is used for being communicated with the gas inlet in a butt joint mode; the first air port and the second air port are communicated through the airflow cavity, and a plurality of sound insulation plates which do not seal the airflow cavity are arranged on the side wall of the airflow cavity. 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 to 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 first air port and the second air port are connected through an airflow cavity, and a plurality of sound insulation boards which do not close the airflow cavity are arranged on the side wall of the airflow cavity.

[0010] As a further preferred solution, the airflow cavity has a first side wall and a second side wall opposite to the first side wall;

[0011] Acoustic panels include:

[0012] A plurality of first sound insulation panels disposed on the first side wall;

[0013] A plurality of second sound insulation panels disposed on the second side wall;

[0014] The first sound insulation board and the second sound insulation board are arranged at an interval to form a flow channel for air flow to flow between the first air port and the second air port.

[0015] As a further preferred embodiment, the first sound insulation board and the second sound insulation board are symmetrically arranged on the two side walls of the airflow cavity.

[0016] As a further preferred solution, the first sound insulation board is arranged to extend obliquely so as to guide the airflow from the first air port to the second air port;

[0017] And / or, the second sound insulation board is arranged to extend obliquely so as to guide the air flow from the first air port to the second air port.

[0018] As a further preferred solution, the airflow cavity further has a third side wall, which is located between the first side wall and the second side wall;

[0019] The sound insulation board also includes: a plurality of third sound insulation boards arranged on the third side wall;

[0020] The third sound insulation board is spaced apart from the first sound insulation board and the second sound insulation board.

[0021] As a further preferred solution, part of the third sound insulation board is disposed between two adjacent first sound insulation boards, and the third sound insulation board is spaced apart from the first side wall;

[0022] And / or, a portion of the third sound insulation board is placed between two adjacent second sound insulation boards, and the third sound insulation board is spaced apart from the second side wall.

[0023] As a further preferred solution, a plurality of third sound insulation panels are placed in the flow channel.

[0024] As a further preferred solution, the third sound insulation board is arranged to extend obliquely so as to guide the airflow to flow from the first air outlet to the second air outlet.

[0025] Gas water heater includes:

[0026] A burner housing having a receiving cavity and an air inlet for air to enter the receiving cavity;

[0027] The noise reduction device described in any of the above schemes, wherein the first air port of the noise reduction device is butted against and connected to one end of the air inlet.

[0028] Further as a 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;

[0029] The second air port of the noise reduction device is communicated with the accommodating cavity.

[0030] The main beneficial effects of the above technical solution are:

[0031] A noise reduction device capable of reducing noise is formed. By adapting its first air port to the air inlet of the burner shell, the noise transmitted from the air inlet of the burner shell can be reduced, thereby optimizing the use experience.

[0032] 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

[0033] The utility model is further described below in conjunction with the accompanying drawings:

[0034] Figure 1 It is a schematic diagram of the overall structure of a gas water heater.

[0035] Figure 2 A cross-sectional view of the noise reduction device Figure 1 .

[0036] Figure 3 A cross-sectional view of the noise reduction device Figure 2 .

[0037] As shown in the figure: burner shell-1, accommodating chamber-1.1, air inlet-1.2, noise reduction device-2, outer shell-2.1, air flow chamber-2.11, first side wall-2.11a, second side wall-2.11b, third side wall-2.11c, first air port-2.12, second air port-2.13, sound insulation board-2.2, first sound insulation board-2.21, second sound insulation board-2.22, third sound insulation board-2.23. DETAILED DESCRIPTION

[0038] The present invention is specifically described below with reference to the embodiments:

[0039] Example:

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Specifically, as attached Figure 2 To Attachment Figure 3 As shown in , the noise reduction device 2 in this embodiment includes a housing 2.1, the interior of the housing 2.1 is hollow and has an airflow cavity 2.11, 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, so that the first air port 2.12 and the second air port 2.13 are connected through the airflow cavity 2.11. And the first air port 2.12 is used to connect with the air inlet 1.2.

[0044] Furthermore, the side wall of the airflow cavity 2.11 is provided with: a plurality of sound insulation boards 2.2 that do not close the airflow cavity 2.11. That is, the sound insulation board 2.2 is a plate or block that is convexly arranged on the side wall of the airflow cavity 2.11; the convex height on the side wall of the airflow cavity 2.11 is arranged to match the caliber of the airflow cavity 2.11, so that when the sound insulation board 2.2 is arranged on one side wall of the airflow cavity 2.11, the end of the sound insulation board 2.2 is arranged at a distance from the other side wall of the airflow cavity 2.11, forming a channel for the first air port 2.12 and the second air port 2.13 to communicate, so that the first air port 2.12 and the second air port 2.13 are still connected through the airflow cavity 2.11, and the airflow cavity 2.11 is not closed.

[0045] 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 enters the accommodating chamber 1.1 for air supply through the channel formed by the air inlet 1.2, the first air port 2.12, the air flow cavity 2.11, and the second air port 2.13; at the same time, the noise is transmitted outward from the accommodating chamber 1.1 through the channel. At this time, the sound insulation board 2.2 will occupy part of the space in the air flow cavity 2.11. On the one hand, the noise originally flowing through this part of the space needs to bypass the sound insulation board 2.2 to be transmitted outward, thereby extending the propagation path of this part of the noise and better attenuating the noise; on the other hand, when the noise is transmitted to the sound insulation board 2.2, the sound insulation board 2.2 will absorb, scatter or reflect sound waves, thereby changing the noise propagation path and reducing the noise intensity, thereby reducing the transmitted noise.

[0046] Furthermore, as attached Figure 2As shown in the figure, in this embodiment, the airflow chamber 2.11 has a first side wall 2.11a and a second side wall 2.11b opposite to the first side wall 2.11a. At this time, the sound insulation board 2.2 includes: a plurality of first sound insulation boards 2.21 arranged on the first side wall 2.11a; and a plurality of second sound insulation boards 2.22 arranged on the second side wall 2.11b. Moreover, the end of the first sound insulation board 2.21 and the end of the second sound insulation board 2.22 are arranged at intervals to form: a flow channel for airflow to flow between the first air port 2.12 and the second air port 2.13.

[0047] Compared with only setting the sound insulation board 2.2 on one side wall of the airflow cavity 2.11, by respectively setting the first sound insulation board 2.21 and the second sound insulation board 2.22 on the two side walls opposite to each other of the airflow cavity 2.11, not only the noise attenuation effect can be improved, but also the balance of the overall structure of the noise reduction device 2 can be optimized, so that the noise reduction device 2 can be fixed on the burner housing 1 in a more balanced and stably manner.

[0048] Furthermore, the first sound insulation board 2.21 and the second sound insulation board 2.22 are preferably symmetrically arranged on the two side walls of the airflow cavity 2.11. That is, the position of the first sound insulation board 2.21 on the first side wall 2.11a is symmetrical with the position of the second sound insulation board 2.22 on the second side wall 2.11b, and the shape and structure of the first sound insulation board 2.21 and the shape and structure of the second sound insulation board 2.22 are also symmetrical. This can further optimize the balance and stability of the overall structure of the noise reduction device 2.

[0049] As for the first sound insulation board 2.21, in this embodiment, it is preferably arranged to extend obliquely, so as to guide the airflow from the first air port 2.12 to the second air port 2.13. When the noise reduction device 2 is preferably installed in the accommodating chamber 1.1 as described below, the external air entering the first air port 2.12 from the air inlet 1.2 can flow more smoothly to the second air port 2.13, and flow into the accommodating chamber 1.1 from the second air port 2.13.

[0050] Similarly, the second sound insulation board 2.22 is preferably arranged to extend obliquely so as to guide the airflow from the first air port 2.12 to the second air port 2.13.

[0051] In this embodiment, as shown in the attached Figure 2 To Attachment Figure 3As shown in the figure, the airflow cavity 2.11 also has a third side wall 2.11c, which is located between the first side wall 2.11a and the second side wall 2.11b. At this time, the sound insulation board 2.2 also includes: a plurality of third sound insulation boards 2.23 arranged on the third side wall 2.11c; the third sound insulation boards 2.23 are arranged at intervals with the first sound insulation board 2.21 and the second sound insulation board 2.22. By adding the third sound insulation board 2.23 that absorbs, scatters or reflects noise sound waves, the attenuation effect of blocking noise can be improved.

[0052] In one form, such as Figure 2 As shown in FIG. 1 , a portion of the third sound insulation board 2.23 may be disposed between two adjacent first sound insulation boards 2.21, and the third sound insulation board 2.23 is spaced apart from the first side wall 2.11a.

[0053] In this way, the space formed between adjacent first sound insulation boards 2.21 is divided into two smaller chambers by the third sound insulation board 2.23, and the two chambers are connected through the space between the third sound insulation board 2.23 and the first side wall 2.11a. When the noise propagates to any chamber, it will be reflected and attenuated after colliding with the first sound insulation board 2.21, the third sound insulation board 2.23 and the first side wall 2.11a; the reflected and attenuated part of the noise will enter the other chamber from the space between the third sound insulation board 2.23 and the first side wall 2.11a, and be reflected again, instead of being directly transmitted to the outside, so as to better block and attenuate the noise.

[0054] Similarly, part of the third sound insulation board 2.23 may be placed between two adjacent second sound insulation boards 2.22, and the third sound insulation board 2.23 is spaced apart from the second side wall 2.11b.

[0055] In another form, a plurality of third sound insulation boards 2.23 may be placed in a flow channel (a flow channel formed by the first sound insulation board 2.21 and the second sound insulation board 2.22 being spaced apart and for air to flow between the first air port 2.12 and the second air port 2.13). When part of the noise is transmitted outward through the flow channel, the third sound insulation board 2.23 will absorb, scatter or reflect this part of the noise to improve the overall noise blocking and attenuation effect.

[0056] In any form, the third sound insulation board 2.23 is preferably arranged to extend obliquely, so as to guide the airflow from the first air port 2.12 to the second air port 2.13. When the noise reduction device 2 is preferably installed in the accommodating chamber 1.1 as described below, the external air entering the first air port 2.12 from the air inlet 1.2 can flow more smoothly to the second air port 2.13, and flow into the accommodating chamber 1.1 from the second air port 2.13.

[0057] On the basis of the above, a sound absorbing member may be fixed to the sound insulation board 2.2 by, for example, glue, and the sound absorbing member is preferably a sound absorbing cotton. By adding a sound absorbing member, the noise can be better absorbed and blocked, and the transmission rate of the noise can be reduced. At the same time, the sound absorbing member is preferably arranged on a side surface of the sound insulation board 2.2 facing away from the first air port 2.12. In this way, when the noise reduction device 2 is preferably installed in the accommodating cavity 1.1 as described below, the airflow is not easy to impact the sound absorbing member, and the sound absorbing member can be better protected.

[0058] 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.

[0059] 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.

[0060] 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 air flow cavity 2.11 and the second air port 2.13, so as to be burned by the burner in the accommodating chamber 1.1.

[0061] The noise generated by the burner and other parts in the accommodating chamber 1.1 when working is transmitted to the outside (for example, the attached Figure 2 Through the above settings, the noise can be reduced during the noise transmission process, the transmitted noise can be reduced, and the use experience of the gas water heater can be optimized.

[0062] 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.

[0063] 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.

[0064] 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 first air port (2.12) and the second air port (2.13) are connected via the airflow cavity (2.11), and a plurality of sound insulation boards (2.2) that do not close the airflow cavity (2.11) are arranged on the side wall of the airflow cavity (2.11).

2. The noise reduction device according to claim 1, characterized in that: The airflow cavity (2.11) comprises a first side wall (2.11a) and a second side wall (2.11b) opposite to the first side wall (2.11a); The sound insulation board (2.2) comprises: A plurality of first sound insulation panels (2.21) arranged on the first side wall (2.11a); A plurality of second sound insulation panels (2.22) arranged on the second side wall (2.11b); The first sound insulation board (2.21) and the second sound insulation board (2.22) are arranged at an interval to form a flow channel for air flow to flow between the first air port (2.12) and the second air port (2.13).

3. The noise reduction device according to claim 2, characterized in that: The first sound insulation board (2.21) and the second sound insulation board (2.22) are symmetrically arranged on two side walls of the airflow cavity (2.11).

4. The noise reduction device according to any one of claims 2 to 3, characterized in that: The first sound insulation board (2.21) is arranged to extend obliquely so as to guide the airflow from the first air port (2.12) to flow to the second air port (2.13); And / or, the second sound insulation board (2.22) is arranged to extend obliquely so as to guide the air flow from the first air port (2.12) to the second air port (2.13).

5. The noise reduction device according to claim 2, characterized in that: The airflow chamber (2.11) further comprises a third side wall (2.11c) which is located between the first side wall (2.11a) and the second side wall (2.11b); The sound insulation board (2.2) further comprises: a plurality of third sound insulation boards (2.23) arranged on the third side wall (2.11c); The third sound insulation board (2.23) is arranged at an interval from the first sound insulation board (2.21) and the second sound insulation board (2.22).

6. The noise reduction device according to claim 5, characterized in that: A portion of the third sound insulation board (2.23) is placed between two adjacent first sound insulation boards (2.21), and the third sound insulation board (2.23) is spaced apart from the first side wall (2.11a); And / or, part of the third sound insulation board (2.23) is placed between two adjacent second sound insulation boards (2.22), and the third sound insulation board (2.23) is spaced apart from the second side wall (2.11b).

7. The noise reduction device according to claim 5, characterized in that: A plurality of the third sound insulation panels (2.23) are placed in the flow channel.

8. The noise reduction device according to any one of claims 5 to 7, characterized in that: The third sound insulation board (2.23) is arranged to extend obliquely so as to guide the air flow from the first air port (2.12) to the second air port (2.13).

9. 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 8, 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).

10. The gas water heater according to claim 9, 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).

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