Fan noise reduction device of water heater

Abstract

A draught fan noise reduction device of a water heater comprises a shell, a heating device and a draught fan device, the heating device and the draught fan device are both arranged in the shell, the air outlet end of the draught fan device is communicated with the air inlet end of the heating device, and the draught fan noise reduction device further comprises a noise reduction device body. The noise reduction device is arranged at the air inlet end of the draught fan device so as to reduce noise generated when the draught fan device sucks air. The utility model provides a fan noise reduction device of a water heater, which can reduce noise generated when the water heater works and improve the use experience of consumers.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas water heaters, specifically relating to a fan noise reduction device for water heaters. Background Technology

[0002] Gas water heaters, as a type of gas appliance, use gas as fuel. They generate heat by burning the fuel and then transfer that heat to the water flowing through a heat exchanger to produce hot water. This allows consumers to have access to hot water instantly and continuously, making them very popular with consumers.

[0003] To ensure sufficient air supply to the burner of a gas water heater for complete combustion of the fuel, existing gas water heaters generally employ a forced-draft structure. This involves a fan at the air inlet of the burner, which actively draws air towards the burner. The problem is that during operation, the airflow generated by the fan is high-speed. This airflow, relative to the fan and burner, creates significant friction and resistance, resulting in noise. This noise can be uncomfortable for consumers and negatively impacts their user experience.

[0004] Therefore, further improvements are needed. Utility Model Content

[0005] The purpose of this utility model is to overcome at least one of the shortcomings of the prior art and to provide a fan noise reduction device for water heaters, which can reduce the noise generated when the water heater is working and improve the user experience.

[0006] To achieve the above objectives, the technical solution provided by this utility model embodiment is as follows:

[0007] A noise reduction device for a water heater fan includes a housing, a heating device, and a fan device. The heating device and the fan device are both disposed inside the housing. The air outlet of the fan device is connected to the air inlet of the heating device. The device also includes a noise reduction device disposed on the air inlet of the fan device to reduce the noise emitted by the fan device when it draws in air.

[0008] The noise reduction device is provided with a noise reduction channel, an air inlet and an air outlet connecting the noise reduction channel, and a sound-absorbing component for absorbing noise. The air inlet is located at one end of the fan noise reduction device and is connected to the air inlet of the outer shell. The air outlet is located at the other end of the fan noise reduction device and is connected to the air inlet of the fan device. The sound-absorbing component is located inside the noise reduction channel and is close to the air inlet and / or the air outlet.

[0009] The noise reduction device includes a first noise reduction component, a second noise reduction component, and a third noise reduction component connected sequentially along the airflow direction. The noise reduction channel is composed of the inner cavity of the first noise reduction component, the inner cavity of the second noise reduction component, and the inner cavity of the third noise reduction component. The air inlet is located on the first noise reduction component, the air outlet is located on the third noise reduction component, and the sound-absorbing component is located in the inner cavity of the first noise reduction component.

[0010] The cross-sectional area of ​​the inner cavity of the first noise reduction component is greater than that of the second noise reduction component, and the cross-sectional area of ​​the inner cavity of the second noise reduction component is greater than that of the third noise reduction component.

[0011] A first connection structure is provided between the first noise reduction component and the second noise reduction component. The first connection structure includes a first connection step disposed on the first noise reduction component and a first connection rib disposed on the second noise reduction component. The first connection step is located on the end of the first noise reduction component away from the air inlet, and the first connection rib is located on the outer wall of the second noise reduction component near the first noise reduction component. The first connection step and the first connection rib are interlocked to connect the first noise reduction component and the second noise reduction component.

[0012] A second connection structure is provided between the second noise reduction component and the third noise reduction component. The second connection structure includes a second connection hole provided on the second noise reduction component and a second connection part provided on the third noise reduction component. The second connection hole is located on the end of the second noise reduction component near the third noise reduction component, and the second connection part is located on the end of the third noise reduction component near the second noise reduction component. The second connection part is inserted into the second connection hole and the two are interference-fitted to connect the second noise reduction component and the third noise reduction component to each other.

[0013] An installation structure is provided between the noise reduction device and the fan device. The fan device is provided with an air inlet connector, which is located at the air inlet end of the fan device. The installation structure includes an installation hole on the third noise reduction component and an installation part on the air inlet connector. The installation hole is located at the end of the third noise reduction component near the air inlet connector, and the installation part is located on the outer wall of the air inlet connector. The installation part is inserted into the installation hole and the two are interference-fitted to allow the noise reduction device to be installed on the fan device.

[0014] A locking structure is provided between the noise reduction device and the fan device. The locking structure includes a locking hole on the third noise reduction component and a locking hook on the air inlet connector. The locking hole is located at the end of the third noise reduction component near the air inlet connector and is located around the mounting hole. The locking hook is located on the outer wall of the air inlet connector and is located behind the mounting part. The locking hole and the locking hook are correspondingly provided. The mounting part is inserted into the mounting hole, and the fastener and the locking hole are interlocked to lock the noise reduction device onto the fan device.

[0015] The first noise reduction component includes a first component housing and a second component outer shell. A third connection structure is provided between the first component housing and the second component outer shell. The third connection structure includes a third connection hole on the first component housing and a third connection hook on the second component outer shell. The third connection hole is located at the opening of the first component housing, and the third connection hook is located on the outer wall of the second component outer shell and close to its opening. The third connection hole and the third connection hook are correspondingly arranged, and the third connection hook and the third connection hole are interlocked to connect the first component housing and the second component outer shell.

[0016] The noise reduction device is also provided with a drain outlet for draining water from the noise reduction channel and a drain connection for connecting the drain outlet to an external drainage source. The drain connection is located on the outer wall of the third noise reduction component, and the drain outlet is located on the drain connection and connects the noise reduction channel to the external drainage source.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention incorporates a noise reduction device on the water heater, installed at the air inlet of the fan unit. When air passes through the noise reduction device into the fan unit and heating unit, it reduces the friction and resistance generated by the relative movement between the airflow and the fan unit and heating unit, thereby reducing the airflow pressure when the air enters the fan unit. This reduces and absorbs some of the noise generated by the airflow, making the water heater more comfortable for consumers and improving their user experience of gas water heaters. Attached Figure Description

[0019] Figure 1 This is a rear view of a water heater according to an embodiment of the present invention.

[0020] Figure 2 This is a structural schematic diagram of a noise reduction device according to an embodiment of the present invention.

[0021] Figure 3 This is a cross-sectional view of a noise reduction device according to an embodiment of the present invention.

[0022] Figure 4 This is an exploded view of a noise reduction device according to an embodiment of the present invention.

[0023] Figure 5 This is an exploded view of a noise reduction device according to an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram showing the noise reduction device being separated from the fan unit according to an embodiment of the present invention.

[0025] Figure 7This is a schematic diagram showing the noise reduction device being separated from the fan unit according to an embodiment of the present invention.

[0026] Figure 8 This is an exploded view of the first noise reduction component according to an embodiment of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0028] See Figure 1 The noise reduction device for the fan of this water heater includes a housing 1, a heating device 2, and a fan device 3. The heating device 2 and the fan device 3 are both installed inside the housing 1. The fan device 3 is located below the heating device 2, and its outlet is connected to the inlet of the heating device 2. The water heater also includes a noise reduction device 4, which is installed on the inlet of the fan device 3. In this embodiment, the noise reduction device 4 is provided with a noise reduction channel 41, an air inlet 42, an air outlet 43, and a sound-absorbing component 44. The noise reduction channel 41 is placed inside the noise reduction device 4. The air inlet 42 is located at one end of the fan noise reduction device 4 and is connected to the inlet of the housing 1. The air outlet 43 is located at the other end of the fan noise reduction device 4 and is connected to the inlet of the fan device 3. The sound-absorbing component 44 is preferably sound-absorbing cotton and is set in the noise reduction channel 41 and close to the air inlet 42. When the water heater is working, the fan device 3 works and draws air from the external environment. The air first enters the noise reduction device 4. The noise reduction channel 41 can slow down the airflow speed when the air enters the fan device 3, thereby reducing the friction and resistance generated by the relative movement between the airflow and the fan device 3 and the heating device 2, reducing the airflow pressure when the air enters the fan device 3, and thus reducing the noise generated by the airflow. The sound-absorbing component 44 can absorb part of the noise generated by the airflow, thereby reducing the transmission of noise to the external environment, making it more comfortable for consumers to use the water heater, and improving the consumer's experience of using the gas water heater.

[0029] Furthermore, the noise reduction device 4 includes a first noise reduction component 45, a second noise reduction component 46, and a third noise reduction component 47. Specifically, in this embodiment, the first noise reduction component 45, the second noise reduction component 46, and the third noise reduction component 47 are connected sequentially along the airflow direction. The second noise reduction component 46 is interconnected with the first noise reduction component 45 through a first connecting structure, and the third noise reduction component 47 is interconnected with the second noise reduction component 46 through a second connecting structure.

[0030] The noise reduction channel 41 is composed of the inner cavity of the first noise reduction component 45, the inner cavity of the second noise reduction component 46, and the inner cavity of the third noise reduction component 47. The cross-sectional area of ​​the inner cavity of the first noise reduction component 45 is larger than that of the inner cavity of the second noise reduction component 46, and the cross-sectional area of ​​the inner cavity of the second noise reduction component 46 is larger than that of the inner cavity of the third noise reduction component 47. The air inlet 42 is disposed on the first noise reduction component 45, the air outlet 43 is disposed on the third noise reduction component 47, and the sound absorption component 44 is disposed in the inner cavity of the first noise reduction component 45.

[0031] When the water heater is working, air enters the noise reduction channel 41 through the air inlet 42 and passes through the first noise reduction component 45, the second noise reduction component 46 and the third noise reduction component 47 in sequence, and is output from the air outlet 43 to the fan device 3. As the cross-sectional area of ​​the noise reduction channel 41 gradually decreases, the air pressure inside it gradually decreases, causing the airflow to generate turbulence and consuming some sound wave energy, which further improves the noise reduction effect of the noise reduction device 4, as can be understood by those skilled in the art.

[0032] Furthermore, in this embodiment, the first connecting structure includes a first connecting step 451 and a first connecting rib 461. Specifically, the first connecting step 451 is disposed on the first noise reduction component 45 and located at the end of the first noise reduction component 45 away from the air inlet 42. The first connecting rib 461 is annular and disposed on the second noise reduction component 46 and located on the outer wall of the second noise reduction component 46 near the first noise reduction component 45. When the first noise reduction component 45 and the second noise reduction component 46 are placed together, the first connecting step 451 and the first connecting rib 461 are interlocked, so that the first noise reduction component 45 and the second noise reduction component 46 are connected to each other. This is understood by those skilled in the art.

[0033] Furthermore, in this embodiment, the second connection structure includes a second connection hole 462 and a second connection portion 471. Specifically, the second connection hole 462 is disposed on the second noise reduction component 46 and located at the end of the second noise reduction component 46 near the third noise reduction component 47, and the second connection portion 471 is disposed on the third noise reduction component 47 and located at the end of the third noise reduction component 47 near the second noise reduction component 46. When the second noise reduction component 46 and the third noise reduction component 47 are placed together, the second connection portion 471 is inserted into the second connection hole 462 and the two are interference-fitted with each other, so that the second noise reduction component 46 and the third noise reduction component 47 are connected to each other, as will be understood by those skilled in the art.

[0034] Furthermore, an installation structure is provided between the noise reduction device 4 and the fan device 3. The fan device 3 is provided with an air inlet connector 31. Specifically, in this embodiment, the air inlet connector 31 is fastened to the air inlet end of the fan device 3. The installation structure includes an installation hole 472 and an installation part 311. The installation hole 472 is provided on the third noise reduction component 47 and is located on the end of the third noise reduction component 47 near the air inlet connector 31. The installation part 311 is provided on the air inlet connector 31 and is located on the outer wall of the air inlet connector 31. When the noise reduction device 4 is placed on the fan device 3, the installation part 311 is inserted into the installation hole 472 and the two are interference-fitted with each other, so that the noise reduction device 4 is installed on the fan device 3. This is understood by those skilled in the art.

[0035] Furthermore, a locking structure is provided between the noise reduction device 4 and the fan device 3. Specifically, in this embodiment, the locking structure includes a locking hole 473 and a locking hook 312. The locking hole 473 is located on the end of the third noise reduction component 47 near the air inlet connector 31 and is located around the mounting hole 472. Preferably, there are four locking holes 473 arranged in pairs on the front and rear sides of the third noise reduction component 47. The locking hook 312 is located on the outer wall of the air inlet connector 31 and is located behind the mounting part 311. The number of locking hooks 312 corresponds to the locking hole 473, preferably four, arranged in pairs on the front and rear sides of the air inlet connector 31. When the noise reduction device 4 is placed on the fan device 3, the mounting part 311 is inserted into the mounting hole 472, and the latch and the locking hole 473 are interlocked, so that the noise reduction device 4 is locked on the fan device 3. This is understood by those skilled in the art.

[0036] Further, the first noise reduction component 45 includes a first component housing 452 and a second component outer shell 453. A third connection structure is provided between the first component housing 452 and the second component outer shell 453. Specifically, in this embodiment, the third connection structure includes a third connection hole 4521 and a third connection hook 4531. The third connection hole 4521 is disposed in the first component housing 452 and located at the opening of the first component housing 452. Preferably, there are four third connection holes 4521, arranged in pairs on the upper and lower sides of the opening of the first component housing 452. Three connecting hooks 4531 are disposed on the second component housing 453 and located on the outer wall of the second component housing 453 and close to its opening. The number of third connecting hooks 4531 corresponds to the number of third connecting holes 4521. Preferably, four hooks are arranged in pairs on the upper and lower sides of the outer wall of the second component housing 453. When the first component housing 452 and the second component housing 453 are placed together, the third connecting hooks 4531 and the third connecting holes 4521 are engaged with each other, so that the first component housing 452 and the second component housing 453 are connected to each other. This is understood by those skilled in the art.

[0037] Furthermore, the noise reduction device 4 is also provided with a drain outlet 48 and a drain connection part 49. Specifically, in this embodiment, the drain connection part 49 is a column and is provided on the outer wall of the third noise reduction component 47 and is arranged opposite to the fan device 3. The drain outlet 48 is provided on the drain connection part 49 and connects the noise reduction channel 41 to the external drainage source. The drain connection part 49 is connected to the external drainage source through a water pipe to connect the drain outlet 48 to the external drainage source and discharge the water in the noise reduction channel 41 out of the noise reduction device 4. Through the above technical solution, when the moisture in the air is accidentally sucked into the noise reduction device 4, it can be discharged to the external environment in time, avoiding the moisture from contacting the fan device 3 and the heating device 2, which to a certain extent extends the service life of the fan device 3 and the heating device 2. This is understandable to those skilled in the art.

[0038] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A fan noise reduction device for a water heater, comprising a housing (1), a heating device (2), and a fan device (3), wherein the heating device (2) and the fan device (3) are both disposed within the housing (1), and the air outlet of the fan device (3) is connected to the air inlet of the heating device (2), characterized in that, The noise reduction device (4) is arranged on the air inlet end of the fan device (3) to reduce the noise generated when the fan device (3) sucks air.

2. The fan noise reduction device for a water heater according to claim 1, wherein The noise reduction device (4) is arranged on the air inlet end of the fan device (3) to reduce the noise generated when the fan device (3) sucks air.

3. The fan noise reduction apparatus of the water heater according to claim 2, wherein, The noise reduction device (4) includes a first noise reduction component (45), a second noise reduction component (46), and a third noise reduction component (47) connected in sequence along the air flow direction, the noise reduction channel (41) is composed of the inner cavities of the first noise reduction component (45), the second noise reduction component (46), and the third noise reduction component (47), the air inlet (42) is arranged on the first noise reduction component (45), the air outlet (43) is arranged on the third noise reduction component (47), and the sound absorption component (44) is arranged in the inner cavity of the first noise reduction component (45).

4. The fan noise reduction apparatus of the water heater according to claim 3, wherein, The inner cavity of the first noise reduction component (45) has a larger cross-sectional area than the inner cavity of the second noise reduction component (46), and the inner cavity of the second noise reduction component (46) has a larger cross-sectional area than the inner cavity of the third noise reduction component (47).

5. The fan noise reduction apparatus of the water heater according to claim 3, wherein, The first connection structure includes a first connection step (451) arranged on the first noise reduction component (45) and a first connection protrusion (461) arranged on the second noise reduction component (46), the first connection step (451) is located on the end of the first noise reduction component (45) away from the air inlet (42), the first connection protrusion (461) is located on the outer wall of the second noise reduction component (46) close to the first noise reduction component (45), and the first connection step (451) and the first connection protrusion (461) are buckled with each other to connect the first noise reduction component (45) and the second noise reduction component (46).

6. The fan noise reduction apparatus of the water heater according to claim 3, wherein, The second connection structure includes a second connection hole (462) arranged on the second noise reduction component (46) and a second connection part (471) arranged on the third noise reduction component (47), the second connection hole (462) is located on the end of the second noise reduction component (46) close to the third noise reduction component (47), the second connection part (471) is located on the end of the third noise reduction component (47) close to the second noise reduction component (46), the second connection part (471) is inserted into the second connection hole (462) and they are in interference fit with each other to connect the second noise reduction component (46) and the third noise reduction component (47).

7. The fan noise reduction apparatus of the water heater according to claim 3, wherein, The mounting structure is arranged between the noise reduction device (4) and the fan device (3), the fan device (3) is provided with an air inlet joint (31), the air inlet joint (31) is arranged on the air inlet end of the fan device (3), the mounting structure comprises a mounting hole (472) arranged on the third noise reduction component (47) and a mounting portion (311) arranged on the air inlet joint (31), the mounting hole (472) is located on the end of the third noise reduction component (47) close to the air inlet joint (31), the mounting portion (311) is located on the outer wall of the air inlet joint (31), the mounting portion (311) is inserted into the mounting hole (472) and is in interference fit with each other, so that the noise reduction device (4) is mounted on the fan device (3).

8. The fan noise reduction apparatus of the water heater according to claim 6, wherein, The locking structure is arranged between the noise reduction device (4) and the fan device (3), the locking structure comprises a lock hole (473) arranged on the third noise reduction component (47) and a lock hook (312) arranged on the air inlet joint (31), the lock hole (473) is located on the end of the third noise reduction component (47) close to the air inlet joint (31) and is located on the periphery of the mounting hole (472), the lock hook (312) is located on the outer wall of the air inlet joint (31) and is located on the rear side of the mounting portion (311), the lock hole (473) and the lock hook (312) are correspondingly arranged, the mounting portion (311) is inserted into the mounting hole (472), the buckle portion and the lock hole (473) are buckled with each other, so that the noise reduction device (4) is locked on the fan device (3).

9. The fan noise reduction apparatus of the water heater according to claim 3, wherein, The first noise reduction component (45) comprises a first component shell (452) and a second component shell (453), and a third connecting structure is arranged between the first component shell (452) and the second component shell (453), the third connecting structure comprises a third connecting hole (4521) arranged on the first component shell (452) and a third connecting hook (4531) arranged on the second component shell (453), the third connecting hole (4521) is located at the opening of the first component shell (452), the third connecting hook (4531) is located on the outer wall of the second component shell (453) and is close to the opening thereof, the third connecting hole (4521) and the third connecting hook (4531) are correspondingly arranged, the third connecting hook (4531) and the third connecting hole (4521) are buckled with each other, so that the first component shell (452) and the second component shell (453) are connected with each other.

10. The fan noise reduction apparatus of the water heater according to claim 3, wherein, The noise reduction device (4) is further provided with a drain port (48) for draining water in the noise reduction channel (41) and a drain connection portion (49) for connecting an external drain source to the drain port (48), the drain connection portion (49) is arranged on the outer wall of the third noise reduction component (47), and the drain port (48) is arranged on the drain connection portion (49) and communicates the noise reduction channel (41) with the external drain source.

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