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; the first air port and the second air port are communicated through an airflow cavity, a plurality of containing grooves are formed in the side wall of the airflow cavity, and groove openings of the containing grooves are communicated with 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 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. A plurality of accommodating grooves are arranged on the side wall of the airflow cavity. The groove openings of the accommodating grooves are connected to 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] The receiving tank includes:

[0012] A plurality of first accommodating grooves are arranged on the first side wall;

[0013] A plurality of second accommodating grooves are arranged on the second side wall.

[0014] As a further preferred solution, in the direction from the first air port to the second air port, the first containing grooves and the second containing grooves are arranged alternately.

[0015] As a further preferred solution, a plurality of blocking plates are arranged on the side walls of the airflow cavity.

[0016] Further as a preferred solution, the blocking plate includes: a first blocking plate arranged on the first side wall;

[0017] The end of the first blocking plate is close to the notch of the second containing groove and is spaced apart from the groove wall of the second containing groove.

[0018] Further as a preferred solution, the blocking plate includes: a second blocking plate arranged on the second side wall;

[0019] The end of the second blocking plate is close to the notch of the first containing groove and is spaced apart from the groove wall of the first containing groove.

[0020] As a further preferred solution, the first blocking plate is arranged to extend obliquely so as to guide the airflow from the first air port to the second air port;

[0021] And / or, the second blocking plate is arranged to extend obliquely so as to guide the airflow to flow from the first air port to the second air port.

[0022] As a further preferred solution, the groove wall of the accommodating groove includes an arc-shaped surface.

[0023] Gas water heater, including:

[0024] A burner housing having a receiving cavity and an air inlet for air to enter the receiving cavity;

[0025] 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.

[0026] 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;

[0027] The second air port in the noise reduction device is communicated with the accommodating cavity.

[0028] The main beneficial effects of the above technical solution are:

[0029] 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.

[0030] 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

[0031] The utility model is further described below in conjunction with the accompanying drawings:

[0032] Figure 1 It is a schematic diagram of the overall structure of a gas water heater.

[0033] Figure 2 A cross-sectional view of the noise reduction device Figure 1 .

[0034] Figure 3 A cross-sectional view of the noise reduction device Figure 2 .

[0035] 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, first air port-2.12, second air port-2.13, first accommodating groove-2.14, second accommodating groove-2.15, first baffle plate-2.16, second baffle plate-2.17. DETAILED DESCRIPTION

[0036] The present invention is specifically described below with reference to the embodiments:

[0037] Example:

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] Furthermore, a plurality of accommodating grooves are arranged on the side wall of the airflow cavity 2.11, and the notches of the accommodating grooves are communicated with the airflow cavity 2.11.

[0043] 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, part of the noise will be diverted and propagated into the accommodating groove after entering the air flow cavity 2.11, and will be reflected multiple times in the accommodating groove, thereby changing the noise propagation path and reducing the noise intensity, so as to reduce the noise transmitted outward.

[0044] As attached Figure 2 As shown in the figure, the airflow chamber 2.11 in this embodiment has a first side wall 2.11a and a second side wall 2.11b opposite to the first side wall 2.11a. Moreover, the receiving grooves include: a plurality of first receiving grooves 2.14 arranged on the first side wall 2.11a; and a plurality of second receiving grooves 2.15 arranged on the second side wall 2.11b.

[0045] By providing the accommodating groove structures on both side walls at opposite positions, 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.

[0046] At this time, the first accommodating groove 2.14 and the second accommodating groove 2.15 can be arranged opposite to each other.

[0047] Alternatively, as described in this embodiment, in the direction from the first air port 2.12 to the second air port 2.13, the first receiving grooves 2.14 and the second receiving grooves 2.15 are preferably arranged in a staggered manner. Figure 2As shown in the figure, a part of the notch of each first receiving groove 2.14 is opposite to a second receiving groove 2.15, and another part of the notch is opposite to another second receiving groove 2.15 adjacent to the first second receiving groove 2.15. Compared with arranging the first receiving groove 2.14 and the second receiving groove 2.15 opposite to each other, the airflow cavity 2.11, the first receiving groove 2.14 and the second receiving groove 2.15 can form a curved and extended flow channel connecting the first air port 2.12 and the second air port 2.13. Not only can the air flow flow more smoothly between the first air port 2.12 and the second air port 2.13, but also part of the noise has a longer propagation path when it is transmitted outward through the curved and extended flow channel, so that it can be better attenuated.

[0048] Furthermore, a plurality of blocking plates may be arranged on the side wall of the airflow cavity 2.11. The blocking plates are plates or blocks convexly arranged on the side wall of the airflow cavity 2.11.

[0049] The protrusion height of the blocking plate on the side wall of the airflow cavity 2.11 is preferably set to match the diameter of the airflow cavity 2.11, so that when the blocking plate is set on one side wall of the airflow cavity 2.11, the end of the blocking plate is spaced apart from the other side wall of the airflow cavity 2.11 to form a channel for the first air port 2.12 and the second air port 2.13 to communicate with each other, 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.

[0050] When a baffle is provided, the baffle will occupy part of the space in the airflow cavity 2.11. On the one hand, the noise originally flowing through this part of the space needs to bypass the baffle 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, the baffle will absorb, scatter or reflect the sound waves, thereby changing the noise propagation path and reducing the noise intensity, thereby reducing the transmitted noise.

[0051] Specifically, in this embodiment, as shown in the attached Figure 2 As shown in the figure, the blocking plate includes: a first blocking plate 2.16 arranged on the first side wall 2.11a. The end of the first blocking plate 2.16 is close to the notch of the second containing groove 2.15 and is spaced from the groove wall of the second containing groove 2.15; in this way, after part of the noise is reflected on the first blocking plate 2.16, it can better enter the second containing groove 2.15 again and be reflected in the second containing groove 2.15, so as to better attenuate the noise.

[0052] Similarly, in this embodiment, as shown in the attached Figure 2As shown in , the blocking plate may further include: a second blocking plate 2.17 disposed on the second side wall 2.11b; the end of the second blocking plate 2.17 is close to the notch of the first accommodating groove 2.14 and is spaced from the groove wall of the first accommodating groove 2.14, so as to further improve the attenuation effect of noise.

[0053] The formation of the first blocking plate 2.16 and the second blocking plate 2.17 can be set according to specific needs.

[0054] On the basis of the above, in this embodiment, as shown in the attached Figure 3 As shown in the figure, the first blocking plate 2.16 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.

[0055] Similarly, in this embodiment, as shown in the attached Figure 3 As shown in FIG. 1 , the second blocking plate 2.17 is also preferably 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.

[0056] Furthermore, as attached Figure 2 and attached Figure 3 As shown in , the groove wall of the receiving groove includes an arc surface; that is, the groove wall of the first receiving groove 2.14 and the groove wall of the second receiving groove 2.15 preferably have an arc surface. By providing the groove wall with an arc surface, on the one hand, air can flow more smoothly, and on the other hand, when the noise propagates to the groove wall and is reflected, the reflected sound wave can be better dispersed to the surroundings, thereby reducing the concentrated propagation of the noise.

[0057] On the basis of the above, a sound absorbing member may be fixed to the baffle plate (first baffle plate 2.16 and / or second baffle plate 2.17) 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 baffle plate facing away from the first air port 2.12. In this way, when the noise reduction device 2 is preferably installed in the accommodating chamber 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 1As 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), a plurality of accommodating grooves are arranged on the side wall of the airflow cavity (2.11), and the notches of the accommodating grooves are connected to 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) located opposite to the first side wall (2.11a); The receiving tank comprises: A plurality of first accommodating grooves (2.14) are arranged on the first side wall (2.11a); A plurality of second accommodating grooves (2.15) are arranged on the second side wall (2.11b).

3. The noise reduction device according to claim 2, characterized in that: In the direction from the first air port (2.12) to the second air port (2.13), the first accommodating grooves (2.14) and the second accommodating grooves (2.15) are arranged in a staggered manner.

4. The noise reduction device according to claim 2, characterized in that: A plurality of blocking plates are arranged on the side walls of the airflow cavity (2.11).

5. The noise reduction device according to claim 4, characterized in that: The blocking plate comprises: a first blocking plate (2.16) arranged on the first side wall (2.11a); The end of the first blocking plate (2.16) is close to the notch of the second accommodating groove (2.15) and is spaced apart from the groove wall of the second accommodating groove (2.15).

6. The noise reduction device according to claim 5, characterized in that: The blocking plate comprises: a second blocking plate (2.17) arranged on the second side wall (2.11b); The end of the second blocking plate (2.17) is close to the notch of the first accommodating groove (2.14) and is spaced apart from the groove wall of the first accommodating groove (2.14).

7. The noise reduction device according to claim 6, characterized in that: The first blocking plate (2.16) 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 blocking plate (2.17) 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).

8. The noise reduction device according to any one of claims 1 to 7, characterized in that: The groove wall of the accommodating groove includes an arc surface.

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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