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 formed in 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, a flow blocking column is arranged in the airflow cavity, and the flow blocking column and the side wall of the airflow cavity are arranged in a spaced 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 an outer wall is provided with a first air port and a second air port, 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 the airflow cavity, and a flow blocking column is arranged in the airflow cavity and is spaced apart from the side wall of the airflow cavity.

[0010] As a further preferred solution, a plurality of first flow blocking portions are protrudingly formed on the outer wall of the flow blocking column.

[0011] As a further preferred solution, a plurality of second flow blocking portions are convexly formed on the side wall of the airflow cavity.

[0012] As a further preferred solution, a sound insulation groove is arranged at one end of the baffle column facing the second air port, and the notch of the sound insulation groove is arranged toward the second air port.

[0013] As a further preferred solution, the airflow cavity comprises: a first cavity and a second cavity connected to each other;

[0014] The diameter of the first cavity is larger than the diameter of the second cavity.

[0015] As a further preferred solution, the baffle column is arranged in the second cavity.

[0016] As a further preferred solution, a plurality of spaced apart support columns are fixedly connected to the side wall of the airflow cavity, and the support columns are fixedly connected to the flow baffle columns to support and fix the flow baffle columns.

[0017] As a further preferred solution, the support column comprises: a plurality of first columns spaced apart from each other, and a plurality of second columns spaced apart from each other;

[0018] The first column and the second column respectively fix the two ends of the baffle column.

[0019] Gas water heater, including:

[0020] A burner housing having a receiving cavity and an air inlet for air to enter the receiving cavity;

[0021] 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.

[0022] 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;

[0023] The second air port in the noise reduction device is communicated with the accommodating cavity.

[0024] The main beneficial effects of the above technical solution are:

[0025] A noise reduction device capable of reducing noise is formed. By adapting its first air port to the air inlet connected to the burner shell, the noise transmitted from the air inlet of the burner shell can be reduced, thereby optimizing the user experience of the gas water heater.

[0026] 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

[0027] The utility model is further described below in conjunction with the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the structure of a gas water heater.

[0029] Figure 2 Schematic diagram of the noise reduction device structure.

[0030] Figure 3 It is a cross-sectional schematic diagram of the noise reduction device.

[0031] 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 cavity-2.11a, second cavity-2.11b, first air port-2.12, second air port-2.13, second baffle part-2.14, baffle column-2.2, first baffle part-2.21, sound insulation groove-2.22, first column-2.3, second column-2.4. DETAILED DESCRIPTION

[0032] The present invention is specifically described below with reference to the embodiments:

[0033] Example:

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] Furthermore, a baffle column 2.2 is provided in the airflow cavity 2.11, and the outer wall of the baffle column 2.2 is spaced apart from the side wall of the airflow cavity 2.11, so that a channel for airflow to flow between the first air port 2.12 and the second air port 2.13 is formed between the baffle column 2.2 and the side wall of the airflow cavity 2.11.

[0039] 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 baffle column 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 baffle column 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 propagates to the baffle column 2.2, the baffle column 2.2 will absorb, scatter or reflect the sound waves, thereby changing the noise propagation path and reducing the noise intensity, thereby reducing the transmitted noise.

[0040] The baffle column 2.2 in this embodiment is preferably fixed in the airflow cavity 2.11 by a plurality of spaced support columns. Specifically, a plurality of spaced support columns are fixedly connected to the side wall of the airflow cavity 2.11, and the ends of the support columns are fixedly connected to the baffle column 2.2 to support and fix the baffle column 2.2. The spaces between the support columns form a channel for airflow to flow between the first air port 2.12 and the second air port 2.13.

[0041] Furthermore, as attached Figure 3 As shown in the figure, the support column in this embodiment includes: a plurality of spaced first columns 2.3, and a plurality of spaced second columns 2.4; the first columns 2.3 and the second columns 2.4 respectively fix the two ends of the baffle column 2.2, so that the baffle column 2.2 can be more stably installed in the airflow cavity 2.11.

[0042] Specifically, the first column 2.3 is arranged close to the second air port 2.13, and the second column 2.4 is arranged close to the first air port 2.12. One end of the first column 2.3 is fixedly connected to the side wall of the airflow cavity 2.11, and the other end is fixedly connected to the end of the baffle column 2.2 close to the second air port 2.13, so as to fix the end of the baffle column 2.2 close to the second air port 2.13. One end of the second column 2.4 is fixedly connected to the side wall of the airflow cavity 2.11, and the other end is fixedly connected to the end of the baffle column 2.2 close to the first air port 2.12, so as to fix the end of the baffle column 2.2 close to the first air port 2.12.

[0043] As attached Figure 3 As shown in the figure, the outer wall of the baffle column 2.2 may be convexly formed with: a plurality of first baffles 2.21 for blocking noise propagation, which absorb, scatter or reflect sound waves, thereby changing the noise propagation path and reducing the noise intensity, thereby reducing the transmitted noise.

[0044] Similarly, a plurality of second flow blocking portions 2.14 for blocking noise propagation may also be formed protrudingly on the side wall of the airflow cavity 2.11.

[0045] By providing the first baffle 2.21 and the second baffle 2.14, the passage for airflow formed between the baffle column 2.2 and the side wall of the airflow cavity 2.11 can be bent and extended, thereby extending the propagation path of the noise and better attenuating the noise.

[0046] Based on the purpose of air intake, in order to improve the airflow, in this embodiment, as shown in the attached Figure 3 As shown in FIG. 1 , the end of the first baffle portion 2.21 is preferably spaced apart from the side wall of the airflow cavity 2.11, and the end of the second baffle portion 2.14 is preferably spaced apart from the baffle column 2.2.

[0047] Furthermore, a soundproof groove 2.22 is provided at one end of the baffle column 2.2 facing the second air port 2.13, and the notch of the soundproof groove 2.22 is arranged toward the second air port 2.13. Thus, when the noise reduction device 2 is installed in the burner housing 1 as described below, the noise enters the airflow cavity 2.11 from the second air port 2.13, and part of the noise enters the soundproof groove 2.22, so that all the noise entering the airflow cavity 2.11 is prevented from rushing out from the first air port 2.12 together, thereby reducing the transmitted noise.

[0048] Furthermore, as attached Figure 3 As shown in , the airflow cavity 2.11 in this embodiment preferably includes: a first cavity 2.11a and a second cavity 2.11b that are connected; the caliber of the first cavity 2.11a is larger than the caliber of the second cavity 2.11b. By forming a first cavity 2.11a area with a larger caliber, noise can be better diffused in the airflow cavity 2.11 and collide with the airflow cavity 2.11, so as to better attenuate the noise.

[0049] In this embodiment, as shown in the attached Figure 3 As shown in FIG. 1 , the first gas port 2.12 is connected to the second cavity 2.11b, and the second gas port 2.13 is connected to the first cavity 2.11a.

[0050] As attached Figure 3 As shown in FIG. 1 , in this embodiment, the baffle column 2.2 is preferably disposed in a second cavity 2.11b with a smaller diameter and a narrower opening, so as to better block noise.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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 air flow chamber 2.11, 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 use experience of the gas water heater is optimized.

[0055] At this time, in order to allow the external air to better enter the accommodating chamber 1.1 through the airflow chamber 2.11, as shown in the attached Figure 3 As shown in FIG. 1 , an inclined flow guide surface may be provided on the end surface of the baffle column 2.2 facing the first air port 2.12, which guides the air flow entering the first air port 2.12 to flow toward the second air port 2.13.

[0056] At the same time, if attached Figure 3 As shown in FIG. 2 , the first baffle 2.21 and the second baffle 2.14 may be arranged to be inclined to guide the airflow entering the first air port 2.12 to flow toward the second air port 2.13.

[0057] 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.

[0058] 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.

[0059] 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: The outer shell (2.1) has an air flow cavity (2.11) inside, and the outer wall is 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 connecting 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 flow blocking column (2.2) is provided in the airflow cavity (2.11) and is spaced apart from a side wall of the airflow cavity (2.11).

2. The noise reduction device according to claim 1, characterized in that: A plurality of first flow blocking portions (2.21) are protrudingly formed on the outer wall of the flow blocking column (2.2).

3. The noise reduction device according to claim 1, characterized in that: A plurality of second flow blocking portions (2.14) are convexly formed on the side wall of the airflow cavity (2.11).

4. The noise reduction device according to claim 1, characterized in that: A sound insulation groove (2.22) is provided at one end of the baffle column (2.2) facing the second air port (2.13), and the notch of the sound insulation groove (2.22) is arranged toward the second air port (2.13).

5. The noise reduction device according to any one of claims 1 to 4, characterized in that: The airflow cavity (2.11) comprises: a first cavity (2.11a) and a second cavity (2.11b) which are connected to each other; The caliber of the first cavity (2.11a) is greater than the caliber of the second cavity (2.11b).

6. The noise reduction device according to claim 5, characterized in that: The baffle column (2.2) is arranged in the second cavity (2.11b).

7. The noise reduction device according to any one of claims 1 to 4, characterized in that: A plurality of spaced-apart support columns are fixedly connected to the side wall of the airflow cavity (2.11), and the support columns are fixedly connected to the flow-blocking columns (2.2) to support and fix the flow-blocking columns (2.2).

8. The noise reduction device according to claim 7, characterized in that: The support column comprises: a plurality of first columns (2.3) spaced apart from each other, and a plurality of second columns (2.4) spaced apart from each other; The first column (2.3) and the second column (2.4) respectively fix the two ends of the baffle column (2.2).

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) in the noise reduction device is in communication with the accommodating chamber (1.1).

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