Gas water heater

Abstract

The utility model provides a kind of gas water heater, it includes burner, flue and fan, the air inlet of flue is communicated with the air outlet of burner, flue is at least partially extended to outdoor, fan is used to provide power for the flue gas discharge generated by burner, fan is arranged in the pipeline of flue located in outdoor. By being arranged in the pipeline of flue located in outdoor, the pneumatic noise and operating noise of fan are not easy to spread to indoor, reduce the noise of gas water heater that user hears in indoor, improve user experience.

Description

Technical Field

[0001] This utility model relates to the field of gas water heaters, and in particular to a gas water heater. Background Technology

[0002] The noise sources of a gas water heater system mainly consist of fan aerodynamic noise and overall machine vibration noise, with fan aerodynamic noise being the primary source. Currently, the fan system of gas water heaters on the market is located inside the water heater, generating a relatively large aerodynamic noise source that is close to the user and also close to the air intake channel of the gas water heater. Furthermore, the noise from the fan system can directly penetrate the casing and be transmitted to the outside of the casing, as well as through the air intake channel. Therefore, the noise heard by the user from the water heater is relatively large, resulting in a poor user experience. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defect of existing gas water heaters where fan noise affects user experience, and to provide a gas water heater.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A gas water heater includes a burner, a flue pipe, and a fan. The air inlet of the flue pipe is connected to the air outlet of the burner. The flue pipe extends at least partially to the outside. The fan is used to provide power for the emission of flue gas generated by the burner. The fan is installed in the outdoor pipe of the flue pipe.

[0006] In this technical solution, by installing the fan inside the duct where the exhaust pipe is located outdoors, the aerodynamic and operational noise of the fan is less likely to be transmitted indoors, thus reducing the noise of the gas water heater heard by users indoors and improving the user experience.

[0007] Preferably, the fan is located at the end of the exhaust pipe away from the burner.

[0008] In this technical solution, by placing the fan at the end away from the burner, on the one hand, the fan is farther away from the indoor user, resulting in a better user experience; on the other hand, placing the fan at the end is more convenient to install than placing it in the middle of the duct.

[0009] Preferably, the fan is a mixed-flow fan.

[0010] In this technical solution, the mixed-flow fan has the high static pressure characteristic of a centrifugal fan. Since the overall resistance of a gas water heater is relatively large, setting the fan as a mixed-flow fan can improve the efficiency of smoke exhaust.

[0011] Preferably, the mixed-flow fan includes a moving impeller and a stationary impeller, the moving impeller facing the air inlet direction of the exhaust pipe and the stationary impeller facing the air outlet direction of the exhaust pipe.

[0012] In this technical solution, the moving impeller of the mixed-flow fan is located in the air inlet direction of the exhaust pipe, that is, the direction of the incoming flow of flue gas, ensuring that the moving impeller of the mixed-flow fan can draw the airflow through the exhaust pipe. The stationary impeller of the mixed-flow fan is located in the air outlet direction facing the exhaust pipe, that is, the far end of the flue gas. After the airflow does work through the moving impeller, it is converted into static pressure in the stationary impeller, which can improve the efficiency of the fan.

[0013] Preferably, the fan is an axial flow fan.

[0014] Preferably, the air outlet of the burner is located at the top of the burner, and the flue pipe is connected to the top of the burner.

[0015] In this technical solution, the flue gas temperature is relatively high and tends to flow upwards under natural flow conditions. By placing the air outlet of the burner at the top of the burner, it is more in line with the flow characteristics of the flue gas and improves the exhaust efficiency.

[0016] Preferably, the air inlet of the burner is located at the bottom of the burner.

[0017] In this technical solution, by setting the air inlet of the burner at the bottom of the burner, the burner forms an airflow direction of bottom inlet and top outlet, which is beneficial to improving combustion efficiency.

[0018] Preferably, the gas water heater further includes a housing with an inner cavity, the burner being disposed in the inner cavity, an air inlet channel being provided on the housing, the air inlet channel connecting the inner cavity and the indoor environment, and the air inlet of the burner being connected to the air inlet channel.

[0019] Preferably, there is a gap between the burner and the cavity wall of the inner cavity, and the air inlet of the burner is connected to the air inlet channel through the gap.

[0020] Preferably, the housing includes a front panel and a back panel disposed opposite to each other, the front panel being oriented toward the user, and the air intake channel being disposed on the back panel.

[0021] In this technical solution, by setting an air intake channel on the back panel, the panel seen by the user during normal use is a complete, hole-free structure, which is more aesthetically pleasing overall. Attached Figure Description

[0022] Figure 1 This is a front view schematic diagram of a gas water heater according to an embodiment of the present utility model.

[0023] Figure 2This is a three-dimensional structural diagram (I) of a gas water heater according to an embodiment of the present invention.

[0024] Figure 3 This is a cross-sectional structural schematic diagram (I) of a gas water heater according to an embodiment of the present invention.

[0025] Figure 4 for Figure 3 Enlarged view of section A.

[0026] Figure 5 This is a cross-sectional structural schematic diagram (II) of a gas water heater according to an embodiment of the present invention.

[0027] Figure 6 This is a three-dimensional structural schematic diagram (II) of a gas water heater according to an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] Gas water heater 100

[0030] Burner 1

[0031] Burner air inlet 101

[0032] Burner air outlet 102

[0033] Smoke exhaust pipe 2

[0034] Fan 3

[0035] Moving blade 31

[0036] 32 stationary blades

[0037] 4 housings

[0038] Air intake duct 401

[0039] Panel 41

[0040] Backplate 42 Detailed Implementation

[0041] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0042] like Figures 1-6As shown, this embodiment provides a gas water heater 100, which includes a burner 1, a flue pipe 2, and a fan 3. The air inlet of the flue pipe 2 is connected to the air outlet 102 of the burner, and the flue pipe 2 extends at least partially to the outside. The fan 3 provides power for the exhaust of the flue gas generated by the burner 1, and the fan 3 is installed in the outdoor section of the flue pipe 2. By installing the fan 3 in the outdoor section of the flue pipe 2, the aerodynamic noise and operating noise of the fan 3 are less likely to propagate indoors, reducing the noise of the gas water heater 100 heard by the user indoors and improving the user experience.

[0043] Specifically, in this embodiment, the fan 3 is located at the end of the exhaust pipe 2 away from the burner 1. By placing the fan 3 at the end away from the burner 1, on the one hand, the fan 3 is farther from the indoor user, resulting in a better user experience; on the other hand, placing the fan 3 at the end is more convenient to install than placing it in the middle of the pipe.

[0044] Of course, in other embodiments, the fan 3 can also be set in the middle section of the exhaust pipe 2, as long as it is ensured that the fan 3 can be reliably installed and fixed.

[0045] In this embodiment, the fan 3 is a mixed-flow fan 3. Since the mixed-flow fan 3 has the high static pressure characteristic of the centrifugal fan 3, and the gas water heater 100 has a large overall resistance, setting the fan 3 as a mixed-flow fan 3 can improve the efficiency of smoke exhaust.

[0046] Of course, in other embodiments, the fan 3 can also be an axial flow fan 3, which can also provide power for the flue gas emission of the burner 1 when installed in the flue pipe 2, which will not be elaborated here.

[0047] Specifically in this embodiment, such as Figure 3 and Figure 4 As shown, the mixed-flow fan 3 includes a moving impeller and a stationary impeller. The moving impeller faces the air inlet direction of the exhaust pipe 2, and the stationary impeller faces the air outlet direction of the exhaust pipe 2. The moving impeller of the mixed-flow fan 3 is located in the air inlet direction of the exhaust pipe 2, which is the direction of the incoming flue gas flow, ensuring that the moving impeller of the mixed-flow fan 3 can draw the airflow out through the exhaust pipe. The stationary impeller of the mixed-flow fan 3 is located in the air outlet direction of the exhaust pipe 2, which is the far end of the flue gas flow. After the airflow does work on the moving impeller, it is converted into static pressure on the stationary impeller, which can improve the efficiency of the fan 3.

[0048] Of course, in other embodiments, as long as the air inlet and outlet directions of the mixed-flow fan 3 are correct, the positions of the moving blades 31 and the stationary blades 32 can be interchanged, which will not be elaborated here.

[0049] When the size of the exhaust pipe 2 is small, the size of the fan 3 that can be installed is also small. In this case, the exhaust effect can be improved by increasing the speed of the fan 3. Of course, the size of the exhaust pipe 2 can also be appropriately increased to accommodate a fan 2 with a larger air volume, which will not be elaborated here.

[0050] In this embodiment, as Figure 3 As shown, the burner outlet 102 is located at the top of the burner 1, and the exhaust pipe 2 is connected to the top of the burner 1. Since the flue gas temperature is relatively high, it tends to flow upwards under natural flow conditions. By placing the burner outlet 102 at the top of the burner 1, it better matches the flow characteristics of the flue gas and improves exhaust efficiency.

[0051] Of course, in other embodiments, the air outlet 102 of the burner can also be set at other positions of the burner 1, but the higher the setting position is in the vertical direction, the more conducive it is to flue gas flow.

[0052] Meanwhile, in this embodiment, the air inlet 101 of the burner is located at the bottom of the burner 1, so that the burner 1 forms an airflow direction of bottom inlet and top outlet, which is beneficial to improving combustion efficiency.

[0053] Of course, in other embodiments, the air inlet 101 of the burner can also be located at other positions of the burner 1, which will not be described in detail here.

[0054] In this embodiment, as Figure 5 and Figure 6 As shown, the gas water heater 100 also includes a housing 4, which has an inner cavity. The burner 1 is disposed in the inner cavity. An air inlet channel 401 is provided on the housing 4, which connects the inner cavity and the indoor environment. The air inlet 101 of the burner is connected to the air inlet channel 401. Specifically, there is a gap between the burner 1 and the cavity wall of the inner cavity, and the air inlet 101 of the burner is connected to the air inlet channel 401 through the gap.

[0055] Of course, in other embodiments, the air inlet channel 401 and the air inlet 101 of the burner can also be connected by setting up a ventilation duct, which will not be described in detail here.

[0056] In this embodiment, as Figure 5 and Figure 6 As shown, the housing 4 includes a front panel 41 and a back panel 42 arranged opposite to each other. The front panel 41 faces the user, and the air inlet channel 401 is provided on the back panel 42. By providing the air inlet channel 401 on the back panel 42, the front panel 41 appears as a complete, hole-free structure when the user is using it normally, making the overall appearance more aesthetically pleasing.

[0057] Meanwhile, in this embodiment, there is no fan 3 at the bottom of the burner 1, and the bottom plate of the casing 4 can be set close to the bottom of the burner 1. Only the outflow gap needs to serve as the flow path for air to flow into the burner 1 through the air inlet channel 401. Therefore, the gas water heater 100 can be made smaller, reducing its footprint in the user's home and optimizing its size while reducing noise.

[0058] The gas water heater can be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the gas water heater to perform corresponding operations, thereby realizing intelligent control of the gas water heater and improving the user experience.

[0059] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A gas water heater, characterized in that, It includes a burner, a flue pipe, and a fan. The air inlet of the flue pipe is connected to the air outlet of the burner. The flue pipe extends at least partially to the outside. The fan is used to provide power for the emission of flue gas generated by the burner. The fan is installed in the outdoor duct of the flue pipe.

2. The gas water heater as described in claim 1, characterized in that, The fan is located at the end of the exhaust pipe away from the burner.

3. The gas water heater as described in claim 1, characterized in that, The fan is a mixed-flow fan.

4. The gas water heater as described in claim 3, characterized in that, The mixed-flow fan includes a moving impeller and a stationary impeller, with the moving impeller facing the air inlet direction of the exhaust pipe and the stationary impeller facing the air outlet direction of the exhaust pipe.

5. The gas water heater as described in claim 1, characterized in that, The fan is an axial flow fan.

6. The gas water heater as described in claim 1, characterized in that, The air outlet of the burner is located at the top of the burner, and the exhaust pipe is connected to the top of the burner.

7. The gas water heater as described in claim 6, characterized in that, The air inlet of the burner is located at the bottom of the burner.

8. The gas water heater as described in claim 1, characterized in that, The gas water heater also includes a housing with an inner cavity, in which the burner is disposed. An air inlet channel is provided on the housing, which connects the inner cavity and the indoor environment. The air inlet of the burner is connected to the air inlet channel.

9. The gas water heater as described in claim 8, characterized in that, There is a gap between the burner and the cavity wall of the inner cavity, and the air inlet of the burner is connected to the air inlet channel through the gap.

10. The gas water heater as described in claim 9, characterized in that, The housing includes a front panel and a back panel arranged opposite each other, with the front panel facing the user and the air intake channel disposed on the back panel.

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