Silent gas water heater

Abstract

The utility model relates to a mute type gas water heater which comprises a face shell and a bottom shell. The integrated combustor is formed by integrating a combustion device and a heat exchanger, the fuel gas input device is used for providing fuel gas for the combustion device, the water path system passes through the heat exchanger, the fan is arranged at the upper end of the integrated combustor and is used for sucking and discharging combustion waste gas, and a gas inlet part is arranged at the rear end of the bottom shell; the inner side of the air inlet part is provided with a multi-layer sound insulation plate capable of prolonging the length of an air inlet path, the multi-layer sound insulation plate is provided with a plurality of air inlets, the fan is a horizontal direct-current fan, the air inlets of the multi-layer sound insulation plate at least cover part of the fan, external air can naturally flow into the combustion chamber through negative-pressure combustion, the stability of the combustion process is guaranteed, and the combustion efficiency is improved. Meanwhile, the horizontal direct-current fan is adopted, the air inlet amount is increased under the condition of the same rotating speed, and the running noise of the whole machine is reduced.

Description

Technical Field

[0001] This application relates to the field of gas appliance technology, specifically to the field of silent gas water heater technology. Background Technology

[0002] Gas water heaters are relatively mature household products. As a result, in addition to achieving core functions such as safety, stable combustion, and precise temperature control, users are increasingly demanding noise control during use. Quiet design is becoming one of the important development directions for gas water heaters.

[0003] The noise generated during the operation of a gas water heater includes fan operation noise, combustion noise, and noise from the air intake and exhaust circulation, exhibiting diverse and complex characteristics. For example, the pulsating vibrations caused by gas expansion during combustion generate mid-to-high frequency combustion noise. As a key component, the fan, while providing combustion air and exhausting waste gas, also generates significant aerodynamic and mechanical noise due to its rotating blades and airflow disturbances. Furthermore, the flow of air in the intake and exhaust ducts can induce eddies and resonance, contributing to wind noise.

[0004] Therefore, methods commonly used in the industry, such as wall-mounted sound-absorbing materials, optimized structural design, and the introduction of vibration-damping pads, are difficult to solve comprehensive noise problems. Summary of the Invention

[0005] In response to the aforementioned needs, this application proposes a silent gas water heater, which aims to prevent the transmission of noise generated inside the gas water heater through comprehensive sound insulation measures, thereby achieving effective noise reduction.

[0006] To achieve the above objectives, the present application adopts the following technical solution:

[0007] A silent gas water heater includes a front shell and a bottom shell, wherein the front shell and the bottom shell are fitted and fixedly connected to form an installation space;

[0008] It also includes an integrated burner that integrates the combustion device and heat exchanger in the installation space, a gas input device that supplies gas to the combustion device, a water system passing through the heat exchanger, a fan that draws in and exhausts combustion exhaust gas at the top of the integrated burner, and a flue pipe.

[0009] The rear end of the bottom shell is provided with an air intake section, and the inner side of the air intake section is provided with a multi-layer sound insulation plate that can extend the length of the air intake path. The multi-layer sound insulation plate is provided with multiple air inlets. The fan is a horizontal DC fan, and the air inlets of the multi-layer sound insulation plate at least cover part of the fan.

[0010] Thus, by firstly, the top-mounted fan design, compared to the bottom-mounted combustion device design, allows for negative pressure combustion, which facilitates the natural flow of external air into the combustion chamber, ensuring the stability of the combustion process. At the same time, the use of a horizontal DC fan increases the air intake volume and reduces the overall operating noise of the machine at the same speed.

[0011] Meanwhile, at the fan location, multiple layers of sound insulation panels are used to extend the air intake path length, effectively preventing the working noise of the internal cavity from being transmitted out through convection.

[0012] Furthermore, the combustion device and heat exchanger are integrated into one design, which improves the overall combustion and heat exchange efficiency and thus reduces combustion noise.

[0013] In some possible implementations, the integrated burner is provided with front and rear encapsulated combustion devices and heat exchangers, and multi-layered sound-absorbing baffles for the left and right encapsulated combustion devices.

[0014] In some possible implementations, the sound-silencing partition includes rear panels on the rear side and left and right sides of the capsule and a front frame on the front side of the capsule.

[0015] In some possible implementations, side sound insulation panels are also provided on the left and right sides of the rear bulkhead.

[0016] In some possible implementations, a front sound insulation panel is also included, disposed between the combustion device and heat exchanger and the front frame, and a rear sound insulation panel is disposed between the rear side of the combustion device and heat exchanger and the rear panel.

[0017] In some possible implementations, the front sound insulation panel and the rear sound insulation panel each have two layers.

[0018] In some possible implementations, the air inlets of the air intake are located at both ends thereon, and the sound insulation plate includes a first sound insulation plate and a second sound insulation plate arranged sequentially in the air intake direction.

[0019] In some possible implementations, the air intake, the first sound insulation plate, and the second sound insulation plate are all provided with louvered air intakes, and at least the opening directions of the louvered air intakes of the air intake and the second sound insulation plate are perpendicular to each other.

[0020] In some possible implementations, the front shell has an inner extension ring corresponding to the bottom shell, the bottom shell has a support edge corresponding to the front shell, and the support edge is provided with sound insulation cotton.

[0021] In some possible implementations, a sealing ring is also included at the exhaust port. Attached Figure Description

[0022] Figure 1 This is a top view of the gas water heater in this application;

[0023] Figure 2 This is a diagram of the internal structure of the gas water heater described in this application;

[0024] Figure 3 This is an exploded schematic diagram of the burner in this application;

[0025] Figure 4 This is a bottom view of the fan in this application;

[0026] Figure 5 This is a rear view of the gas water heater described in this application;

[0027] Figure 6 This is an exploded schematic diagram of the multi-layer sound insulation panel in this application;

[0028] Figure 7 This is a side sectional view of the gas water heater of this application;

[0029] Figure 8 This is an internal view of the rear shell in this application;

[0030] Figure 9 yes Figure 8 Sectional view at point AA;

[0031] Figure 10 This is a schematic diagram of the explosion of the rear shell, front shell, and sound insulation cotton;

[0032] Figure 11 yes Figure 10 Enlarged view of a portion of point B in the middle;

[0033] Figure 12 This is an internal view of the shell. Detailed Implementation

[0034] The following examples further illustrate the features of this application and other related features in detail, so as to facilitate understanding by those skilled in the art:

[0035] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions in the attached diagrams, while the terms “bottom surface,” “top surface,” “inner,” and “outer” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0036] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this case based on the specific circumstances.

[0037] Please refer to Figure 1 and Figure 3 The present application discloses a silent gas water heater, which includes a front shell 1 and a bottom shell 2. The front shell 1 and the bottom shell 2 are fitted and fixedly connected to form an installation space, which is the installation cavity used to install gas accessories.

[0038] The installation space is equipped with an integrated burner 4, which integrates the combustion device 41 and the heat exchanger 5 into one unit. The heat exchanger 5 adopts a tubeless design, which can save space and facilitate the integrated design. At the same time, the integrated design with the combustion device 41 can improve the heat exchange efficiency.

[0039] Please refer to this carefully. Figure 3 In order to take into account both the high efficiency and quietness of the integrated design, the integrated burner 4 of this application is provided with multi-layer silent baffles that enclose the combustion device 41 and the heat exchanger 5 from both the front and rear sides.

[0040] Specifically, the sound-absorbing baffle includes rear panels 42 on the rear side and left and right sides of the enclosure, and a front frame 43 on the front side of the enclosure. The rear panels 42 are preferably machined from a single piece of material for easy assembly and installation. In this way, the integrated burner 4 can be formed into a structure enclosed on all four sides.

[0041] Furthermore, considering sound insulation, side sound insulation panels 46 are respectively installed on the left and right sides of the rear panel 42. A front sound insulation panel 45 is installed between the combustion device 41 and heat exchanger 5 and the front frame, and a rear sound insulation panel 46 is installed between the rear side of the combustion device 41 and heat exchanger 5 and the rear panel 42. Preferably, the front sound insulation panel 45 and the rear sound insulation panel 46 are each two layers. In this way, installing the front sound insulation panel 45 and the rear sound insulation panel 46 between the rear panel 42 and the front frame 43 facilitates integrated installation during assembly. Thus, by adopting an integrated design of the combustion device 41 and the heat exchanger 5, the overall combustion and heat exchange efficiency is improved, thereby reducing combustion noise.

[0042] Please continue to refer to this. Figure 1 and Figure 2 The gas water heater of this application also includes a gas input device 3 for supplying gas to the combustion device 41 and a water system passing through the heat exchanger 5. Specifically, the gas input device 3 includes an inlet pipe 301, a gas proportional valve 302, and a segmented solenoid valve 303 to precisely control the gas supply. The water system includes an inlet pipe 201, a pressure relief valve 202, a water flow sensor 203, and a water pump 204. After the water enters and is stabilized, the water flows through the heat exchanger 5 to be heated and then delivered to the user through an outlet pipe 206. A temperature sensor 205 is installed at one end of the outlet pipe 206 to sense the outlet water temperature.

[0043] The exhaust gas produced after combustion is discharged outdoors via a fan 6 and a flue 7 located at the top of the integrated burner 4. Thus, the top-mounted design of the fan 6 and the bottom-mounted design of the combustion device 41 facilitate the natural flow of external air into the combustion chamber through negative pressure combustion, ensuring the stability of the combustion process. The air required for combustion is supplied from outside the bottom shell 2, as described in detail below. Please refer to... Figure 3 and Figure 4 The fan 6 is preferably a horizontal DC fan, which increases the air intake volume and reduces the overall operating noise of the unit at the same speed. Specifically, a smoke hood 61 is installed on the upper part of the integrated burner 4. The upper part of the smoke hood 61 is a volute 62 with a built-in centrifugal impeller 63, which is driven by a motor 64. The air outlet of the volute 62 is connected to the exhaust pipe 7. A controller 400 is also included.

[0044] Please refer to Figures 5 to 9 An air intake section 21 is provided at the rear end of the bottom shell 2. The inner side of the air intake section 21 is provided with a multi-layer sound insulation plate 22 that extends the air intake path. The sound insulation plate 22 has multiple air inlets 100, and the air inlets 100 of the multi-layer sound insulation plate 22 at least cover a portion of the fan 6. The air inlets 100 will also be referred to as such in the following description. They can be designed with louvers and are mainly for drawing air in from outside the gas water heater. When they are located on other components, they will also be referred to as air inlets 100. Specifically, air inlets 100 are provided at both ends of the air intake section 21. In a preferred embodiment, the air intake section 21 has an outwardly protruding structure with flanges 211 formed on its sides. In this case, the air inlets 100 of the air intake section 21 extend to the flanges 211 at both ends of the air intake section 21, presenting a three-dimensional, multi-faceted air intake structure.

[0045] Furthermore, the sound insulation panel 22 has a two-layer structure, with a first sound insulation panel 221 and a second sound insulation panel 222 arranged sequentially along the air intake direction. The first sound insulation panel 221 has an air intake 100 in the middle, while the second sound insulation panel 222 has air intakes 100 on both sides. In this way, after the air enters from both sides of the air intake section 21, it will converge in the middle of the first sound insulation panel 221 and diffuse to both sides of the second sound insulation panel 222, effectively extending the air intake path length and effectively preventing the working noise of the internal cavity from being conducted out through convection.

[0046] Preferably, the air intake 21, the first sound insulation panel 221, and the second sound insulation panel 222 are all provided with louvered air inlets 100, and at least the opening directions of the louvered air inlets 100 of the air intake 21 and the second sound insulation panel 222 are perpendicular to each other. That is, the opening direction of the air inlets 100 of the air intake 21 and the first sound insulation panel 221 is arranged horizontally in the longitudinal direction, while the opening direction of the air inlet 100 of the second sound insulation panel 22 is arranged vertically in the longitudinal direction.

[0047] Furthermore, the sound insulation panel 22 is fixed by a slot 241 at the lower end of the air intake 21 of the bottom shell 2, and a corresponding buckle 242 at the bottom of the first sound insulation panel 221. The first sound insulation panel 221 is positioned in the bottom shell 2 by the buckle 242 and fixed around the perimeter. The fixing method can be tightening with screws. Similarly, the second sound insulation panel 222 is also provided with a buckle 242 at the bottom, which is used to position it in the bottom shell 2 and fix it to the first sound insulation panel 221 around the perimeter.

[0048] Please refer to the reference. Figures 10 to 12 As a sound insulation measure to prevent the transmission of operating noise, an inner extension ring 11 is provided on the front shell 1 and a support edge 23 is provided on the bottom shell 2 at the joint where the front shell 1 and bottom shell 2 meet. The support edge 23 is an L-shaped rim that is recessed toward the inner cavity of the bottom shell 2. Sound insulation cotton 8 is provided on the support edge 23 and is adhered to the support edge 23 to form a contact surface with the inner extension ring 11 of the front shell 1. When the front shell 1 and bottom shell 2 are fixedly connected, the sound insulation cotton 8 will be squeezed, effectively preventing the noise inside the gas water heater from being transmitted out.

[0049] Please refer to the reference. Figure 6 and Figure 10 The sealing ring 9 at the smoke exhaust port, which is the hole through which the smoke exhaust pipe 7 exits from the bottom shell 2, further improves the sound insulation effect.

[0050] As stated above, this case protects a silent gas water heater, and all technical solutions that are the same as or similar to this case should be considered to fall within the scope of protection of this case.

Claims

1. A silent gas water heater, characterized in that, It includes a front shell (1) and a bottom shell (2), wherein the front shell (1) and the bottom shell (2) are fitted and fixedly connected to form an installation space; It also includes an integrated burner (4) that integrates the combustion device (41) and heat exchanger (5) in the installation space, a gas input device (3) that supplies gas to the combustion device (41), a water system passing through the heat exchanger (5), a fan (6) that draws in and exhausts combustion exhaust gas at the top of the integrated burner (4), and a flue (7). The bottom shell (2) has an air intake (21) at its rear end. The inner side of the air intake (21) is provided with a multi-layer sound insulation board (22) that can extend the length of the air intake path. The multi-layer sound insulation board (22) has multiple air inlets (100). The fan (6) is a horizontal DC fan. The air inlets (100) of the multi-layer sound insulation board (22) cover at least part of the fan (6).

2. A silent gas water heater as described in claim 1, characterized in that, The integrated burner (4) is equipped with front and rear encapsulated combustion devices (41) and heat exchangers (5), and the left and right encapsulated combustion devices (41) have multi-layer soundproof partitions.

3. A silent gas water heater as described in claim 2, characterized in that, The soundproof partition includes a rear panel (42) on the rear side and left and right sides of the capsule and a front frame (43) on the front side of the capsule.

4. A silent gas water heater as described in claim 3, characterized in that, It also includes side sound insulation panels (44) disposed on the left and right sides of the rear panel (42).

5. A silent gas water heater as described in claim 3, characterized in that, It also includes a front sound insulation panel (45) disposed between the combustion device (41) and heat exchanger (5) and the front frame (43) and a rear sound insulation panel (46) disposed between the rear side of the combustion device (41) and heat exchanger (5) and the rear panel (42).

6. A silent gas water heater as described in claim 5, characterized in that, The front sound insulation panel (45) and the rear sound insulation panel (46) each have two layers.

7. A silent gas water heater as described in claim 1, characterized in that, The air inlet (100) of the air intake section (21) is provided at both ends, and the sound insulation plate (22) includes a first sound insulation plate (221) and a second sound insulation plate (222) arranged sequentially in the air intake direction.

8. A silent gas water heater as described in claim 7, characterized in that, The air intake (21), the first sound insulation plate (221), and the second sound insulation plate (222) are all provided with louvered air intakes (100), and the opening directions of the louvered air intakes (100) of the air intake (21) and the second sound insulation plate (222) are perpendicular to each other.

9. A silent gas water heater as described in claim 1, characterized in that, The face shell (1) is provided with an inner extension ring (11) corresponding to the bottom shell (2), the bottom shell (2) is provided with a support edge (23) corresponding to the face shell (1), and the support edge (23) is provided with sound insulation cotton (8).

10. A silent gas water heater as described in claim 1, characterized in that, It also includes a sealing ring (9) installed at the smoke exhaust port.

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