Noise reduction assembly and gas water heating equipment

Abstract

The utility model relates to the technical field of noise reduction of household appliances, and discloses a noise reduction assembly and gas water heating equipment, the noise reduction assembly is used for the gas water heating equipment, the noise reduction assembly mainly comprises an air inlet main body and a back shell, and the back shell is provided with a mounting groove and an outer air inlet structure communicated with the mounting groove; the air inlet main body is installed in the installation groove in an embedded mode, the air inlet main body is provided with at least one Tesla valve flow channel structure, and the outer air inlet structure, an inlet of the Tesla valve flow channel structure and an outlet of the Tesla valve flow channel structure are sequentially communicated in a one-way mode. The one-way conduction characteristic of the Tesla valve flow channel structure is utilized, the resistance of sound waves transmitted from the outlet of the Tesla valve flow channel structure to the inlet of the Tesla valve flow channel structure is increased, sound wave energy is consumed, noise leaked from the air inlet of the gas water heating equipment is weakened, in addition, the sound wave attenuation path of the noise can be prolonged, and the noise reduction effect is improved. Therefore, noise leaked from the air inlet is further weakened, the noise reduction effect is remarkable, and the use experience is good.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction of household appliances, in particular to a noise reduction component and a gas water heater device. Background Art

[0002] Due to its excellent performance, gas water heater devices have gradually entered thousands of households. Gas water heater devices are usually installed on the wall in a wall-mounted manner, which is small and convenient and does not occupy limited spaces such as kitchens.

[0003] However, since components such as fans and water pumps that are prone to generate noise are usually configured inside gas water heater devices, noises are always generated during the operation of gas water heater devices, causing a bad user experience. A part of the noise of the gas water heater device is directly transmitted through the housing of the gas water heater device, and the other part diffracts through the air inlet channel and is reflected by the wall. The direct transmission sound on the front side, the reflected sound reflected by the wall after being transmitted on the back side, and the diffracted sound directly leaking from the air inlet inside the gas water heater device are superimposed, resulting in relatively obvious noises on the left, front, and right sides of the gas water heater device.

[0004] In order to reduce noise, although existing gas water heater devices also have a solution of adding a cover plate at the air inlet to extend the air inlet path and change the noise transmission direction so as to reduce the noise of the air inlet channel, the noise reduction effect is not obvious. Summary of the Utility Model

[0005] The first technical problem solved by the utility model is to provide a noise reduction component, which effectively solves the problems that existing gas water heater devices have relatively large noises, the noise reduction measures have an unclear effect, and the user experience is affected. By installing the noise reduction component on the gas water heater device, the noise generated during the operation of the gas water heater device can be significantly reduced, and the user experience is good.

[0006] The second technical problem solved by the utility model is to provide a gas water heater device, which effectively solves the problems that existing gas water heater devices have relatively large noises, the noise reduction measures have an unclear effect, and the user experience is affected. By installing the noise reduction component on the gas water heater device, the noise generated during the operation of the gas water heater device can be significantly reduced, and the user experience is good.

[0007] The above first technical problem is solved by the following technical solutions:

[0008] A noise reduction component for a gas water heating device, the noise reduction component includes an air inlet main body and a back shell, the back shell has an installation groove and an external air inlet structure communicating with the installation groove; the air inlet main body is embedded and installed in the installation groove, the air inlet main body is provided with at least one Tesla valve flow channel structure, and the external air inlet structure, the inlet of the Tesla valve flow channel structure and the outlet of the Tesla valve flow channel structure are unidirectionally conducted in sequence.

[0009] Compared with the background technology, the noise reduction component of the present utility model has the following beneficial effects: Taking a gas water heating device as an example, when using this noise reduction component, the air inlet main body is embedded and fixedly installed in the installation groove of the back shell. The air inlet main body is provided with at least one Tesla valve flow channel structure. Utilizing the unidirectional conductivity of the Tesla valve flow channel structure, when the gas water heating device is operating, external air can enter the Tesla valve flow channel structure from the external air inlet structure through the inlet of the Tesla valve flow channel structure, and flow out of the outlet of the Tesla valve flow channel structure and enter the air inlet of the gas water heating device, ensuring the smoothness of the air inlet. When the noise sound wave leaking from the air inlet of the gas water heating device enters the Tesla valve flow channel structure through the outlet of the Tesla valve flow channel structure, under the action of the unidirectional conduction characteristic of the Tesla valve flow channel structure, the resistance of the sound wave transmitting from the outlet of the Tesla valve flow channel structure to the inlet of the Tesla valve flow channel structure increases, and the sound wave energy is consumed, thereby achieving noise reduction and muffling, weakening the noise leaking from the air inlet of the gas water heating device. On the other hand, the Tesla valve flow channel structure can also extend the path of the sound wave attenuation of the noise, slow down the air inlet rate, thereby further weakening the noise leaking from the air inlet, with a significant noise reduction effect and a good user experience.

[0010] In one embodiment, it further includes a sound-absorbing member, the sound-absorbing member is respectively attached to one side of the air inlet main body and the bottom surface of the installation groove, and the area of the sound-absorbing member matches the area of the bottom surface of the installation groove.

[0011] In one embodiment, the air inlet main body is provided with multiple rows of the Tesla valve flow channel structures along its width direction, each row of the Tesla valve flow channel structures includes a plurality of the Tesla valve flow channel structures connected in sequence, and each row of the Tesla valve flow channel structures extends along the length direction of the air inlet main body.

[0012] In one embodiment, the back shell includes a back plate and side plates surrounding the back plate, and the back plate and the side plates enclose the installation groove.

[0013] In one embodiment, the air inlet main body is in close contact with the inner side surfaces of the back plate and the side plates, the lower end of the back plate is provided with a support ear, and the lower end of the sound-absorbing member is supported on the support ear.

[0014] In one embodiment, the air inlet main body is made of plastic or foam material, and the foam material includes at least one of polystyrene and modified polystyrene.

[0015] The above second technical problem is solved by the following technical solutions:

[0016] A gas water heating device includes: a device main body and the above noise reduction component; an air inlet is provided on the back surface of the device main body; the back shell covers the back surface of the device main body; the Tesla valve flow channel structure is formed on the front surface of the air inlet main body, and the front surface of the air inlet main body is in abutting contact with the back surface of the device main body to enclose a Tesla valve flow channel, and the external air inlet structure, the inlet of the Tesla valve flow channel, the outlet of the Tesla valve flow channel, and the air inlet are unidirectionally conducted in sequence; the air inlet is arranged away from the external air inlet structure.

[0017] Compared with the background art, the gas water heating device of the present utility model has the following beneficial effects: for the gas water heating device installed with the noise reduction component, the air inlet main body is embedded and fixedly installed in the installation groove of the back shell. The air inlet main body is provided with at least one Tesla valve flow channel structure. By using the unidirectional conductivity of the Tesla valve flow channel structure, when the gas water heating device is operating, external air can enter the Tesla valve flow channel structure from the external air inlet structure through the inlet of the Tesla valve flow channel structure, and flow out of the outlet of the Tesla valve flow channel structure and enter the air inlet of the gas water heating device, ensuring the smoothness of the air inlet. When the noise sound wave leaked from the air inlet of the gas water heating device enters the Tesla valve flow channel structure through the outlet of the Tesla valve flow channel structure, under the action of the unidirectional conductivity characteristic of the Tesla valve flow channel structure, the resistance of the sound wave from being transmitted from the outlet of the Tesla valve flow channel structure to the inlet of the Tesla valve flow channel structure increases, and the sound wave energy is consumed, thereby realizing noise reduction and eliminating noise, weakening the noise leaked from the air inlet of the gas water heating device. On the other hand, the Tesla valve flow channel structure can also extend the path of the sound wave attenuation of the noise, slow down the air inlet rate, and further weaken the noise leaked from the air inlet. Compared with the existing gas water heating devices, the noise reduction effect is obvious. The entire noise reduction component is installed by directly fixing the back shell on the back surface of the gas water heating device, and the installation is convenient.

[0018] In one embodiment, the air inlet is located on the upper side of the back surface of the device main body, and the external air inlet structure is located on the lower side of the back shell.

[0019] In one embodiment, a gap is left between the air inlet main body and the top wall of the back shell, and the air inlet is disposed opposite to the gap and communicated with the outlet of the Tesla valve flow channel structure through the gap.

[0020] In one embodiment, the air inlet main body is provided with a notch for avoiding the air inlet, and the notch is communicated with the outlet of the Tesla valve flow channel structure. Description of the Drawings

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 Schematic diagram of a noise reduction component according to an embodiment of the present application installed on a gas water heater;

[0023] Figure 2 is Figure 1 exploded view of;

[0024] Figure 3 is Figure 2 schematic diagram of another perspective of;

[0025] Figure 4 is Figure 1 cross-sectional view of.

[0026] Description of the Reference Numerals:

[0027] 1. Noise reduction component; 101. Air inlet main body; 102. Rear shell; 1021. Installation groove; 1022. Outer air inlet structure; 1023. Back plate; 1024. Side plate; 1025. Support ear; 103. Sound absorbing member; 2. Tesla valve flow channel structure; 3. Equipment body; 301. Air inlet; 4. Gap; 5. Support ear. Detailed Embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application 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 should not be construed as a limitation to the present application.

[0030] In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0031] The main noise sources of gas water heating equipment are the combustion system and the fan system inside it, which have the characteristics of long sound wavelengths and strong derivative capabilities. Since the diffracted sound waves leaking from the air inlet inside the gas water heating equipment are transmitted in the form of plane waves in the air inlet passage, the amplitude of the plane waves will not decay as the air inlet passage grows, and the noise will diffract out from the outlet of the air inlet passage. Therefore, the existing noise reduction method of adding a cover plate at the air inlet of the gas water heating equipment to extend the air inlet path and change the noise transmission direction cannot effectively attenuate the noise energy, and there is a problem of poor noise reduction effect.

[0032] The following will describe the embodiments of the present invention in conjunction with Figures 1 to 4 , the embodiments of the present invention will be described.

[0033] It should be noted that the gas water heating equipment mentioned in this embodiment includes, but is not limited to, equipment such as gas water heaters and wall-mounted boilers that use gas combustion to provide hot water.

[0034] According to an embodiment of the present invention, on the one hand, as shown in Figure 1 and Figure 2 , a noise reduction component 1 is provided, which mainly includes an air inlet main body 101 and a back shell 102.

[0035] The noise reduction component 1 mentioned in this embodiment is mainly used for gas water heating equipment. The noise reduction component 1 is installed on the back of the gas water heating equipment to reduce the noise leaking from the air inlet 301 of the gas water heating equipment.

[0036] Furthermore, as shown in Figure 2 and Figure 3As shown in the figure, the back shell 102 has an installation groove 1021 and an external air inlet structure 1022 communicating with the installation groove 1021. The air inlet main body 101 is embedded and installed in the installation groove 1021. The air inlet main body 101 is provided with at least one Tesla valve flow channel structure 2, and the external air inlet structure 1022, the inlet of the Tesla valve flow channel structure 2, and the outlet of the Tesla valve flow channel structure 2 are sequentially unidirectionally conducted. The external air inlet structure 1022 is used to introduce external air, and the external air unidirectionally flows into the gas water heater through the Tesla valve flow channel structure 2. The Tesla valve flow channel structure 2 has a unidirectional conduction property. By using the unidirectional conduction property of the Tesla valve flow channel structure 2, on the one hand, the acoustic energy is consumed, thereby achieving noise reduction and eliminating noise, and weakening the noise leaked from the air inlet of the gas water heater. On the other hand, the Tesla valve flow channel structure 2 can also extend the path of acoustic wave attenuation of the noise, slow down the air inlet rate, and further weaken the noise leaked from the air inlet.

[0037] It can be seen from this that the noise reduction component 1 provided by the embodiment of the present application embeds and installs the air inlet main body 101 fixedly in the installation groove 1021 of the back shell 102. The air inlet main body 101 is provided with at least one Tesla valve flow channel structure 2. By using the unidirectional conduction property of the Tesla valve flow channel structure 2, when the gas water heater is operating, external air can enter the Tesla valve flow channel structure 2 from the external air inlet structure 1022 through the inlet of the Tesla valve flow channel structure 2, and flow out of the outlet of the Tesla valve flow channel structure 2 and enter the air inlet 301 of the gas water heater, ensuring the smoothness of air inlet. When the noise sound wave leaked from the air inlet 301 of the gas water heater enters the Tesla valve flow channel structure 2 through the outlet of the Tesla valve flow channel structure 2, under the action of the unidirectional conduction characteristic of the Tesla valve flow channel structure 2, the resistance for the sound wave to transfer from the outlet of the Tesla valve flow channel structure 2 to the inlet of the Tesla valve flow channel structure 2 increases, and the acoustic energy is consumed, thereby achieving noise reduction and eliminating noise, and weakening the noise leaked from the air inlet 301 of the gas water heater. On the other hand, the Tesla valve flow channel structure 2 can also extend the path of acoustic wave attenuation of the noise, slow down the air inlet rate, and further weaken the noise leaked from the air inlet 301, with a remarkable noise reduction effect and a good user experience.

[0038] It should be noted that the external air inlet structure 1022 can be independently arranged on the back shell 102 to form an external air inlet, or the external air inlet structure 1022 and the back surface of the gas water heater enclose to form an external air inlet. Similarly, the Tesla valve flow channel structure 2 can be formed inside the air inlet main body 101 to form a complete Tesla valve flow channel, or the Tesla valve flow channel structure 2 can be formed by hollowing out from one side of the air inlet main body 101 into the air inlet main body 101, and one side of the air inlet main body 101 and the back surface of the gas water heater enclose to form a complete Tesla valve flow channel.

[0039] In one embodiment, as Figures 2 to 3As shown, the noise reduction component 1 further includes a sound absorption member 103. The sound absorption member 103 is respectively attached to one side of the air inlet main body 101 and the bottom surface of the installation groove 1021, and the area of the sound absorption member 103 matches the area of the bottom surface of the installation groove 1021.

[0040] Specifically, the opposite sides of the sound absorption member 103 are respectively attached to the bottom surface of the installation groove 1021 and one side of the air inlet main body 101 through fixing glue, that is, the sound absorption member 103 is fixed between the air inlet main body 101 and the back shell 102. When the gas water heater is operating, the vibration noise, equipment operation noise generated by the gas water heater, and the noise transmitted from the back of the gas water heater are directly absorbed by the sound absorption member 103, and the noise after being absorbed by the sound absorption member 103 is effectively attenuated to further improve the noise reduction effect.

[0041] In one embodiment, as Figure 3 shown, the air inlet main body 101 is provided with multiple rows of Tesla valve flow channel structures 2 along its width direction. Each row of Tesla valve flow channel structures 2 includes a plurality of sequentially connected Tesla valve flow channel structures 2, and each row of Tesla valve flow channel structures 2 extends along the length direction of the air inlet main body 101.

[0042] Specifically, as Figure 3 shown, the side of the air inlet main body 101 close to the sound absorption member 103 is provided with a plurality of connected flow channels at intervals, and each flow channel forms a Tesla valve flow channel structure 2. The length direction of the air inlet main body 101 is as shown by the arrow A in Figure 2 , and the width direction of the air inlet main body 101 is as shown by the arrow B in Figure 2 . By arranging multiple rows of Tesla valve flow channel structures 2 in the width direction of the air inlet main body 101, the flow area of the air flow can be increased, the path of the sound wave attenuation of the noise can be further extended, and the noise reduction effect and the use experience can be improved.

[0043] In one embodiment, as Figure 2 shown, the back shell 102 includes a back plate 1023 and side plates 1024 arranged around the back plate 1023. The back plate 1023 and the side plates 1024 are integrally formed and enclose the installation groove 1021 and form an external air inlet structure 1022, with a simple structure, which is convenient for manufacturing and installation.

[0044] Furthermore, in one embodiment, the air inlet main body 101 is in close contact with the inner side surfaces of the back plate 1023 and the side plates 1024. As Figure 3 shown, a pair of support ears 1025 are further arranged at intervals at the lower end of the back plate 1023. The lower end of the air inlet main body 101 is supported on the pair of support ears 1025 to further improve the stability of the air inlet main body 101 and also facilitate the installation of the air inlet main body 101.

[0045] Further, in one embodiment, a sealing strip is also attached to the connection between the back shell 102 and the gas water heater to prevent noise from leaking through the connection between the back shell 102 and the gas water heater.

[0046] It should be noted that the embodiment of the present application does not limit the material of the air inlet main body 101, and any existing material can be selected according to needs. In order to reduce the use cost, in one embodiment, the air inlet main body 101 is a plastic part or made of a foam material. The foam material includes at least one of polystyrene and modified polystyrene.

[0047] In addition, the embodiment of the present application does not limit the material of the sound-absorbing part 103 either, and any existing material can be selected according to needs. For example, the sound-absorbing part 103 is sound-absorbing cotton, and the sound-absorbing cotton is made of at least one of polyester fiber, melamine cotton, polyethylene terephthalate and polypropylene bicomponent cotton (PP+PET bicomponent cotton), and has good sound-absorbing effect.

[0048] In some other embodiments, the materials of the air inlet main body 101 and the sound-absorbing part 103 can also be selected from other conventional materials according to needs.

[0049] According to an embodiment of the present invention, on the other hand, as Figure 1 shown, a gas water heater is also provided, which mainly includes: a device body 3 and a noise reduction component 1.

[0050] Further, as Figure 2 shown, an air inlet 301 is provided on the back of the device body 3. The back shell 102 covers the back of the device body 3. The Tesla valve flow channel structure 2 is formed on the front surface of the air inlet main body 101, and the front surface of the air inlet main body 101 is in contact with the back of the device body 3 to enclose and form a Tesla valve flow channel, and the external air inlet structure 1022, the inlet of the Tesla valve flow channel, the outlet of the Tesla valve flow channel and the air inlet 301 are unidirectionally conducted in sequence. The air inlet 301 is arranged away from the external air inlet structure 1022.

[0051] The gas water heater equipped with the noise reduction component 1 in the embodiment of the present application consumes the sound wave energy through the Tesla valve flow channel structure 2 to achieve noise reduction and sound elimination. Compared with the existing gas water heaters, the noise reduction effect is obvious. The whole noise reduction component 1 is installed by directly fixing the back shell 102 on the back of the gas water heater, and the installation is convenient.

[0052] Specifically, the back shell 102 of the noise reduction component 1 is detachably installed on the device body 3 for maintenance and replacement. The detachable installation form can adopt any existing structure, such as snap connection for quick installation, or fastener connection to improve the connection tightness. The fasteners can adopt conventional fasteners such as screws and bolts. Correspondingly, threaded holes or round holes are provided on the back shell 102 and the back of the device body 3.

[0053] In addition, as Figure 1 and Figure 3 shown, a pair of lugs 5 extend from the upper and lower ends of the back of the device body 3 respectively. The device body 3 is bypassed around the noise reduction component 1 through a pair of lugs 5 and fixed on the wall. The up and down directions in the embodiments of the present application are as Figure 4 shown.

[0054] It should be noted that the embodiments of the present application do not limit the connection relationship between the pair of lugs 5 and the device body 3 either, and any existing connection relationship can be selected according to needs, such as connecting with fasteners, integrally forming, etc.

[0055] In one embodiment, as Figure 3 and Figure 4 shown, an external air inlet structure 1022 is provided on the circumferential side wall of the back shell 102. The external air inlet structure 1022 and the back of the device body 3 enclose to form an external air inlet, and the external air inlet is communicated with the air inlet 301 of the gas water heater through the Tesla valve flow channel structure 2. The external air inlet structure 1022 is used to introduce external air. In order to ensure that the air flow can fully flow in the Tesla valve flow channel structure 2, the external air inlet structure 1022 can be arranged far away from the air inlet 301 of the gas water heater to extend the length of the Tesla valve flow channel structure 2 and improve the noise reduction effect.

[0056] Furthermore, in one embodiment, as Figure 2 and Figure 3 shown, the air inlet 301 is arranged at a position close to the upper side of the back of the device body 3. The external air inlet structure 1022 is arranged at the lower side of the gas water heater, that is, at the lower side of the back shell 102. The air flow enters the air inlet 301 of the gas water heater through the Tesla valve flow channel structure 2 from the external air inlet structure 1022, and then enters the interior of the gas water heater.

[0057] The air inlet 301 and the external air inlet structure 1022 in the embodiments of the present application are respectively located at the upper and lower sides of the back of the device body 3. On the one hand, it can extend the gas flow path and facilitate further weakening of the leaked noise. On the other hand, the air flow enters the device body 3 from the upper part of the device body 3, which is also beneficial to the heat dissipation of each electrical component inside the device body 3.

[0058] Exemplarily, as Figure 2 shown, a plurality of air inlets 301 are provided near the upper side of the back of the device body 3. The plurality of air inlets 301 are arranged in two rows along the width direction of the device body 3. The width direction of the device body 3 is the same as the width direction of the air inlet main body 101, as Figure 2 indicated by the arrow B in

[0059] Even further, in one embodiment, as Figure 4As shown, there is a gap 4 between the air inlet main body 101 and the top wall of the back shell 102. The air inlet 301 is disposed opposite to this gap 4 and communicates with the outlet of the Tesla valve flow channel structure 2 through this gap 4. The gap 4 between the air inlet main body 101 and the top wall of the back shell 102 is used to connect the outlet of the Tesla valve flow channel structure 2 and the air inlet 301 of the equipment body 3, and collect the airflows from the outlets of multiple Tesla valve flow channel structures 2, preventing the airflows from being disordered and generating noise, and further improving the noise reduction effect.

[0060] Specifically, the outside air first enters the gap 4 between the air inlet main body 101 and the top wall of the back shell 102 through the Tesla valve flow channel structure 2 from the outside air inlet structure 1022. After being collected at the gap 4, it then enters the air inlet 301 of the gas water heater, and subsequently enters the interior of the gas water heater.

[0061] In some other embodiments, the air inlet main body 101 is provided with a notch (not shown in the figure) for avoiding the air inlet 301, and the notch communicates with the outlet of the Tesla valve flow channel structure 2. Using the notch to replace the above-mentioned air inlet cavity can ensure that the air inlet main body 101 covers the inner bottom surface of the back shell 102, which is beneficial to increasing the flow area of the airflows.

[0062] Specifically, the outside air first enters the notch through the Tesla valve flow channel structure 2 from the outside air inlet structure 1022, enters the air inlet 301 of the gas water heater through the notch, and subsequently enters the interior of the gas water heater.

[0063] In addition, the sound-absorbing member 103 also needs to be provided with an opening for avoiding the air inlet 301, and the opening communicates with the notch to ensure that the airflows can flow unidirectionally.

[0064] In the specific content of the above specific embodiments, each technical feature can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combinations of these technical features do not exist in contradiction, they should all be considered as the scope recorded in this specification.

[0065] The specific content of the above specific embodiments only expresses several embodiments of the present invention, and its description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A noise reduction component for a gas water heater, characterized in that: The noise reduction component (1) comprises an air inlet body (101) and a back shell (102); the back shell (102) has a mounting groove (1021) and an external air inlet structure (1022) connected to the mounting groove (1021); the air inlet body (101) is embedded and installed in the mounting groove (1021); the air inlet body (101) is provided with at least one Tesla valve flow channel structure (2); the external air inlet structure (1022), the inlet of the Tesla valve flow channel structure (2) and the outlet of the Tesla valve flow channel structure (2) are sequentially unidirectionally connected.

2. The noise reduction assembly according to claim 1, characterized in that: It also includes a sound absorbing member (103), which is respectively attached to one side of the air inlet body (101) and the bottom surface of the installation groove (1021), and the area of ​​the sound absorbing member (103) matches the area of ​​the bottom surface of the installation groove (1021).

3. The noise reduction assembly according to claim 2, characterized in that: The air inlet body (101) is provided with a plurality of rows of the Tesla valve flow channel structures (2) along its width direction, each row of the Tesla valve flow channel structures (2) includes a plurality of Tesla valve flow channel structures (2) connected in sequence, and each row of the Tesla valve flow channel structures (2) extends along the length direction of the air inlet body (101).

4. The noise reduction assembly according to claim 2, characterized in that: The back shell (102) comprises a back plate (1023) and a side plate (1024) arranged around the back plate (1023), and the back plate (1023) and the side plate (1024) form the installation groove (1021).

5. The noise reduction assembly according to claim 4, characterized in that: The air inlet body (101) is in close contact with the inner side surfaces of the back plate (1023) and the side plate (1024); a supporting ear (1025) is provided at the lower end of the back plate (1023), and the lower end of the air inlet body (101) is supported on the supporting ear (1025).

6. The noise reduction assembly according to any one of claims 1 to 5, characterized in that: The air inlet body (101) is a plastic part or is made of a foam material, and the foam material includes at least one of polystyrene and modified polystyrene.

7. A gas water heater, characterized in that: include: A device body (3) and a noise reduction component (1) as described in any one of claims 1 to 6; an air inlet (301) is provided on the back of the device body (3); the back shell (102) is covered on the back of the device body (3); the Tesla valve channel structure (2) is formed on the front of the air inlet body (101), and the front of the air inlet body (101) and the back of the device body (3) are close together to form a Tesla valve channel, and the external air inlet structure (1022), the inlet of the Tesla valve channel, the outlet of the Tesla valve channel and the air inlet (301) are unidirectionally connected in sequence; the air inlet (301) is arranged away from the external air inlet structure (1022).

8. The gas water heater according to claim 7, characterized in that: The air inlet (301) is located on the upper back side of the device body (3), and the external air inlet structure (1022) is located on the lower side of the back shell (102).

9. The gas water heater according to claim 7, characterized in that: A gap (4) is left between the air inlet body (101) and the top wall of the back shell (102); the air inlet (301) is arranged opposite to the gap (4) and is connected to the outlet of the Tesla valve flow channel structure (2) through the gap (4).

10. The gas water heater according to claim 7, characterized in that: The air inlet body (101) is provided with a notch for avoiding the air inlet (301), and the notch is connected to the outlet of the Tesla valve flow channel structure (2).

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