Waterway system and gas water heater with same

Abstract

The utility model relates to the technical field of kitchen equipment, in particular to a waterway system and a gas water heater with the same, the waterway system comprises a water supply pipeline for water circulation, and the water supply pipeline is internally provided with an ionization purification device for purifying water in the water supply pipeline; the sterilization device is used for sterilizing water in the water supply pipeline and comprises an ultraviolet lamp, and the ultraviolet lamp is configured to emit ultraviolet rays with the wavelength range of 265-580 nm. The water path system capable of purifying water and sterilizing water is formed, so that pipeline scaling can be slowed down, and water flow with higher quality can be output.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen equipment, and more specifically to a water circuit system and a gas water heater with such a system. Background Art

[0002] A gas water heater, also known as a gas water boiler, refers to a gas appliance that uses gas as fuel and transfers heat to cold water flowing through a heat exchanger through combustion heating to achieve the purpose of preparing hot water.

[0003] Existing gas water heaters are merely water heating devices and cannot improve water quality. Since water quality varies in different regions, in areas with relatively poor water quality, not only is it restricted by water quality and unable to obtain a better and more comfortable bathing experience, but also during long-term use, the water circuit system of the gas water heater is prone to pipe scaling; this not only reduces the service life of the water heater pipes, but also reduces the heat exchange efficiency, and even easily causes pipe blockage, affecting user use. Summary of the Utility Model

[0004] One of the purposes of the present utility model is to provide a water circuit system that can both purify water and sterilize water for deficiencies in the prior art, so as to slow down pipe scaling and output higher-quality water flow.

[0005] Another purpose of the present utility model is to provide a gas water heater with the above water circuit system to improve bathing comfort.

[0006] The technical solution measures of the present utility model are as follows:

[0007] A water circuit system for a gas water heater, including:

[0008] A water supply pipeline for water to flow through, and in the water supply pipeline are provided:

[0009] An ionization purification device for purifying water in the water supply pipeline;

[0010] A sterilization device for sterilizing water in the water supply pipeline, and the sterilization device includes: an ultraviolet lamp for irradiating water in the water supply pipeline;

[0011] The ultraviolet lamp is configured to emit ultraviolet light with a wavelength range of 265 - 580 nm.

[0012] Further as a preferred solution, the water supply pipeline is further provided with a water quality monitoring device, which includes:

[0013] A water quality sensor for detecting the water quality of water in the water supply pipeline;

[0014] A display screen electrically connected to the water quality sensor, the display screen being configured to: receive the water quality value detected by the water quality sensor and display the water quality situation.

[0015] Further as a preferred solution, the water quality monitoring device further includes: an independently provided battery;

[0016] Both the water quality sensor and the display screen are powered by being electrically connected to the battery.

[0017] Further as a preferred solution, the water supply pipeline includes: two outlet pipes arranged at intervals, and a water tank body connecting the two outlet pipes;

[0018] The water tank body has: a water flow cavity for connecting the two outlet pipes, and the diameter of the water flow cavity is larger than the diameter of the outlet pipe;

[0019] The water quality sensor is placed in the water flow cavity to detect the water quality.

[0020] Further as a preferred solution, the water tank body is detachably fixed between the two outlet pipes.

[0021] Further as a preferred solution, for each outlet pipe, an insertion pipe is arranged on the water tank body to match the outlet pipe, and the outlet pipe is inserted into the insertion pipe to communicate with the water flow cavity;

[0022] Moreover, the insertion pipe and the outlet pipe inserted into the insertion pipe are detachably connected through a buckling structure.

[0023] Further as a preferred solution, the buckling structure includes:

[0024] A first flange arranged on the outer periphery of the insertion pipe;

[0025] A second flange arranged on the outer periphery of the outlet pipe, and when the outlet pipe is inserted into the insertion pipe, the second flange is adapted to fit on the first flange;

[0026] It further includes a detachable clip, which is configured to: limit the first flange and the second flange to fit together, so that the insertion pipe and the outlet pipe inserted into the insertion pipe are detachably connected.

[0027] Further as a preferred solution, the clip includes:

[0028] Two clamps arranged at intervals on both sides of the outlet pipe, and a connecting arm connecting the two clamps;

[0029] Each clamp is provided with a clamping hole, and the mutually fitting first flange and second flange are jointly installed in the clamping hole, so that: the first flange and the second flange are restricted to fit together;

[0030] Moreover, the connecting arm is elastic so as to: make the clip in a detachable state by driving the connecting arm to undergo tensile deformation.

[0031] Further as an optimal solution, a seal is provided between the water outlet pipe and the inner wall of the water tank body to fill the gap between the water outlet pipe and the inner wall of the water tank body.

[0032] The gas water heater includes the water circuit system in any of the above solutions.

[0033] The main beneficial effects of the above technical solutions are as follows:

[0034] An ionization purification device and a sterilization device are provided in the water supply pipeline. By turning on the ionization purification device and the sterilization device to make them operate, the water in the water supply pipeline of the water circuit system can be purified and the water in the water supply pipeline can be sterilized, so as to slow down pipeline scaling and output better-quality water flow.

[0035] Further or more detailed beneficial effects will be described in combination with specific embodiments in the specific implementation manners. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The following further describes the present utility model with reference to the drawings:

[0037] Figure 1 It is a schematic diagram of the overall assembly structure of the gas water heater.

[0038] Figure 2 It is a schematic diagram of the water supply pipeline structure.

[0039] Figure 3 It is a schematic diagram of the assembly structure of the water quality monitoring device.

[0040] Figure 4 It is Figure 2 a partial enlarged schematic diagram of part A in

[0041] Figure 5 It is a schematic diagram of the assembly of the water tank body.

[0042] Figure 6 It is a schematic diagram of the internal structure of the water tank body.

[0043] As shown in the figure: housing - 1, bottom shell - 1a, panel - 1b, window - 1.1, protective plate - 1.2, water supply pipeline - 2, water inlet pipeline - 2.1, connecting pipeline - 2.2, water outlet pipeline - 2.3, water outlet pipe - 2.31, second flange - 2.311, water tank body - 2.32, water flow chamber - 2.321, insertion pipe - 2.322, first flange - 2.323, baffle - 2.324, water passing hole - 2.325, clip - 2.33, hose clamp - 2.331, connecting arm - 2.332, clamping hole - 2.333, seal - 2.34, water quality monitoring device - 4, water quality sensor - 4.1, display screen - 4.2, battery - 4.3, ionization purification device - 5, sterilization device - 6, heat exchanger - 7. Detailed implementation mode

[0044] The following is a specific example description of the present utility model in combination with embodiments:

[0045] Embodiment 1:

[0046] A water circuit system for use in a gas water heater, as shown in the attached Figure 1 to the attached Figure 6 figure, the water circuit system is placed inside the housing 1. And the water circuit system mainly includes a water supply pipeline 2 for water circulation (that is, water enters from one end and exits from the other end), which is divided into: a water inlet pipeline 2.1 with a water inlet for water to flow in, a water outlet pipeline 2.3 with a water outlet for water to flow out, and a connecting pipeline 2.2 for connecting the water inlet pipeline 2.1 and the water outlet pipeline 2.3.

[0047] Among them, the connecting pipeline 2.2 is generally used to wind around the heat exchanger 6 inside the housing 1 of the gas water heater. When the water heater works, gas burns in the heat exchanger 6 to form high temperature. Cold water enters the water supply pipeline 2 from the water inlet pipeline 2.1. When flowing through the connecting pipeline 2.2, the high temperature formed by the heat exchanger 6 heats the water to form hot water, and the hot water flows from the connecting pipeline 2.2 to the water outlet pipeline 2.3 and then is discharged.

[0048] The water quality in the same area often varies at different times. Especially when water source treatment or tap water pipeline repair is carried out in this area, it is easy to cause the sudden deterioration of the water quality in this area; when water with poor quality flows into the water circuit system of the gas water heater, it is easy to cause pipeline scaling in the water circuit system.

[0049] Based on this, as shown in the attached Figure 2 to the attached Figure 3As shown in the figure, an ionization purification device 5 for purifying the water in the water supply pipeline 2 is provided in the water supply pipeline 2 in this embodiment. The ionization purification device 5 removes charged impurities in the water, such as salts, charged organic substances, etc., through electrochemical performance to achieve water quality purification. Specifically, the ionization purification device 5 adopts, for example, the electrolytic purification device disclosed in a tap water purification device with the publication number CN108892290B; or, the ionization purification device 5 adopts the ionization purification device disclosed in a household water purifier and water purification equipment with the publication number CN108314236B.

[0050] Furthermore, in order to sterilize the water in the water supply pipeline 2 while purifying the water quality to further optimize the water quality. A sterilization device 6 for sterilizing the water in the water supply pipeline 2 is also provided in the water supply pipeline 2 in this embodiment. The sterilization device 6 includes: a ultraviolet lamp (such as a UV-C LED) for irradiating the water in the water supply pipeline 2; and the ultraviolet lamp is configured to: emit ultraviolet rays with a wavelength range of 265 - 580nm. For example: the ultraviolet lamp is inserted into the water supply pipeline 2 to sterilize the water flowing through the water supply pipeline 2 when the power supply drives the sterilization device 6 to turn on (i.e., controls the ultraviolet lamp to light up). At this time, a waterproof cover that is transparent and used to prevent water from invading the ultraviolet lamp can also be provided on the outer periphery of the part where the ultraviolet lamp is inserted into the water supply pipeline 2. The specific structure of the waterproof cover can be set according to actual needs and will not be elaborated here.

[0051] Among them, both the ionization purification device 5 and the sterilization device 6 operate through power supply.

[0052] In this embodiment, both the ionization purification device 5 and the sterilization device 6 in the water circuit system are preferably electrically connected to the control main board of the gas water heater, and the control main board supplies power to the ionization purification device 5 and the sterilization device 6. The ionization purification device 5 and the sterilization device 6 can be kept in the on state for a long time under continuous power supply to continuously purify and sterilize the water in the water supply pipeline 2.

[0053] Or, in order to save costs, both the ionization purification device 5 and the sterilization device 6 are preferably electrically connected to the control main board of the gas water heater, and the control main board is configured to: while supplying power to the ionization purification device 5 and the sterilization device 6, it can also control the ionization purification device 5 and the sterilization device 6 to turn on / off.

[0054] For example, the control main board is electrically connected to: a first button for controlling the on / off connection between the ionization purification device 5 and the control main board. By operating this first button, the on / off connection between the ionization purification device 5 and the control main board is made, driving the ionization purification device 5 to turn on / off.

[0055] Meanwhile, the control main board is electrically connected to: a second button for controlling the on / off connection between the sterilization device 6 and the control main board. By operating this second button, the on / off connection between the sterilization device 6 and the control main board is enabled, driving the sterilization device 6 to open / close.

[0056] At this time, in order to know the water quality of the water in the water supply pipeline 2 and clarify when to drive the ionization purification device 5 and the sterilization device 6 to start.

[0057] As shown in the attached Figure 2 to the attached Figure 5 As shown in the figure, in this embodiment, a water quality monitoring device 4 is preferably provided in the water supply pipeline 2 to detect and display the water quality.

[0058] Specifically, as shown in the attached Figure 3 and the attached Figure 6 As shown in the figure, the water quality monitoring device 4 in this embodiment includes: a water quality sensor 4.1 for detecting the water quality of the water in the water supply pipeline 2, and a display screen 4.2 electrically connected to the water quality sensor 4.1. The display screen 4.2 is configured to: receive the water quality value detected by the water quality sensor 4.1 and display the water quality situation.

[0059] Among them, the water quality sensor 4.1 is preferably a TDS water quality sensor for detecting the inlet TDS value (total dissolved solids), and the display screen 4.2 is configured to: receive the TDS value detected by the water quality sensor 4.1 and display the water quality situation based on the TDS value.

[0060] In one case, the display screen 4.2 is configured to directly display the detected TDS value, and the water quality situation can be directly realized by observing the TDS value displayed on the display screen 4.2.

[0061] In another case, the display screen 4.2 is configured to: receive the TDS value and set multiple regional values. For example, the first region is set to 0 to 100 ppm, the second region is set to 100 to 300 ppm, and the third region is set to greater than 300 ppm. When the received TDS value is in the first region, the display screen 4.2 displays that the water quality is excellent; when the received TDS value is in the second region, the display screen 4.2 displays that the water quality is good; when the received TDS value is in the third region, the display screen 4.2 displays that the water quality is poor.

[0062] During actual use, by observing the water quality situation displayed on the display screen 4.2, when the displayed water quality is poor or good, the ionization purification device 5 and the sterilization device 6 can be driven to start as described above to purify and sterilize the water in the water supply pipeline 2.

[0063] When the waterway system is installed in a gas water heater, both the water quality sensor 4.1 and the display screen 4.2 can be electrically connected to the control main board of the gas water heater and powered by the control main board.

[0064] However, after the gas water heater is filled with water but before it is powered on, it is impossible to observe the inlet water quality of the waterway system and confirm the water quality situation.

[0065] Therefore, the water quality monitoring device 4 in this embodiment preferably further includes: an independently arranged battery 4.3; the battery 4.3 is preferably arranged independently of the power cord and the main board of the gas water heater. Moreover, both the water quality sensor 4.1 and the display screen 4.2 are electrically connected to the battery 4.3 and powered by the battery 4.3. This enables the water quality monitoring device 4 to continuously and stably detect and display the water quality whether the gas water heater is turned on or off.

[0066] Further, as shown in the attached Figure 2 to the attached Figure 6 The water supply pipeline 2 includes: two outlet pipes 2.31 arranged at intervals, and a water tank body 2.32 that connects the two outlet pipes 2.31. And inside the water tank body 2.32, there is a water flow cavity 2.321 for connecting the two outlet pipes 2.31.

[0067] The diameter of the water flow cavity 2.321 is preferably larger than the diameter of the outlet pipe 2.31. The water quality sensor 4.1 is preferably placed in the water flow cavity 2.321 to detect the water quality, and the display screen 4.2 is also preferably fixed on the side of the water tank body 2.32 facing the window 1.1 by, for example, screws or glue, and the battery 4.3 is also preferably fixed on the water tank body 2.32 by, for example, screws or glue. In this way, the water quality sensor 4.1 can be placed in a larger-capacity water flow cavity 2.321 to sense the water quality of a larger amount of water and obtain a more accurate detection effect.

[0068] Furthermore, considering the replacement requirement of the water tank body 2.32. In this embodiment, the water tank body 2.32 is preferably detachably fixed between the two outlet pipes 2.31.

[0069] Specifically, in this embodiment, for each outlet pipe 2.31, an insertion pipe 2.322 is provided on the water tank body 2.32 to match the outlet pipe 2.31, and the outlet pipe 2.31 is inserted into the insertion pipe 2.322 to communicate with the water flow cavity 2.321.

[0070] That is, as shown in the attached Figure 3 to the attached Figure 6As shown in the figure, an insertion pipe 2.322 is provided at the upper end of the water tank body 2.32 to match the upper water outlet pipe 2.31. The upper water outlet pipe 2.31 is inserted into the insertion pipe 2.322 at the upper end of the water tank body 2.32 and communicates with the water flow cavity 2.321. An insertion pipe 2.322 is provided at the lower end of the water tank body 2.32 to match the lower water outlet pipe 2.31. The lower water outlet pipe 2.31 is inserted into the insertion pipe 2.322 at the lower end of the water tank body 2.32 and communicates with the water flow cavity 2.321. Thus, the two water outlet pipes 2.31 are connected through the water flow cavity 2.321.

[0071] Meanwhile, any insertion pipe 2.322 and the water outlet pipe 2.31 inserted into the insertion pipe 2.322 are detachably connected through a buckling structure, so that the water tank body 2.32 is detachably fixed between the two water outlet pipes 2.31.

[0072] In this embodiment, as shown in the attached Figure 3 to the attached Figure 6 figure, the buckling structure includes: a first flange 2.323 provided on the outer periphery of the insertion pipe 2.322, a second flange 2.311 provided on the outer periphery of the water outlet pipe 2.31, and a detachable clip 2.33.

[0073] Among them, the first flange 2.323 and the second flange 2.311 are arranged in a matching manner, so that when the water outlet pipe 2.31 is inserted into the insertion pipe 2.322, the second flange 2.311 fits on the first flange 2.323. The clip 2.33 is configured to: limit the first flange 2.323 and the second flange 2.311 to fit together, so that the insertion pipe 2.322 and the water outlet pipe 2.31 inserted into the insertion pipe 2.322 are detachably connected.

[0074] Furthermore, as shown in the attached Figure 5 figure, the clip 2.33 in this embodiment includes: two clamping rings 2.331 arranged at intervals, and the two clamping rings 2.331 are respectively arranged on both sides of the water outlet pipe 2.31; it also includes a connecting arm 2.332 connecting the two clamping rings 2.331.

[0075] Among them, each clamping ring 2.331 is provided with a clamping hole 2.333, and the mutually fitting first flange 2.323 and second flange 2.311 are jointly installed in the clamping hole 2.333, so as to be as shown in the attached Figure 2 and the attached Figure 3As shown in the figure: the first flange 2.323 and the second flange 2.311 are fitted together in a restricted manner. Moreover, the connecting arm 2.332 is elastic so that: by driving the connecting arm 2.332 to stretch and deform, the clip 2.33 is in a disassembled state. That is, by bending the two clamps 2.331 outwards, driving the connecting arm 2.332 to stretch, the first flange 2.323 and the second flange 2.311 are separated from the clamping hole 2.333, the clip 2.33 can be disassembled, and the water outlet pipe 2.31 can be pulled out from the plug pipe 2.322, and the water tank body 2.32 can be disassembled.

[0076] A sealing member 2.34 may be provided between the outlet pipe 2.31 and the inner wall of the water tank 2.32 to fill the gap between the outlet pipe 2.31 and the inner wall of the water tank 2.32. The sealing member 2.34 is preferably a sealing ring made of silicone or rubber, etc., which is filled in the gap between the outlet pipe 2.31 and the inner wall of the water tank 2.32 to achieve sealing.

[0077] On the basis of the above, it is further considered that when the gas water heater is working normally, on the one hand, hot water can easily directly impact the water quality sensor 4.1, thereby easily damaging the water quality sensor 4.1; on the other hand, the water flow is discharged quickly, and the water quality sensor 4.1 cannot stably and accurately detect the water quality.

[0078] Therefore, if the attached Figure 6 As shown in , a baffle plate 2.324 may be additionally provided in the water flow chamber 2.321 of the water tank body 2.32. A receiving chamber is formed between the baffle plate 2.324 and the side wall of the water flow chamber 2.321 at intervals, and the water quality sensor 4.1 is placed in the receiving chamber to detect the water quality. Moreover, the upper end of the baffle plate 2.324 is connected to the upper end wall of the water flow chamber 2.321 near the plug-in pipe 2.322 (at this time, the plug-in pipe 2.322 at the upper end of the water tank body 2.32 serves as the water inlet of the water flow chamber 2.321, and the plug-in pipe 2.322 at the lower end serves as the water outlet of the water flow chamber 2.321); the lower end extends downward, and is spaced apart from the side wall of the water flow chamber 2.321 to form an outlet for the water in the receiving chamber to flow out. In order to mitigate the impact and better detect the water quality, it is preferred that the upper end of the baffle plate 2.324 is provided with: a plurality of water holes 2.325 for the water flowing into the water flow cavity 2.321 to flow into the accommodating cavity.

[0079] Furthermore, as attached Figure 6As shown in the figure, in the vertical direction from top to bottom, the baffle 2.324 preferably extends in a curved shape, so that the side surface of the baffle 2.324 facing away from the accommodation cavity is a curved surface structure, and guides the water to flow smoothly through the drainage surface of the water flow cavity 2.321, ensuring smooth water discharge from the water supply pipeline 2. At the same time, the lower end of the baffle 2.324 is bent and placed below the water quality sensor 4.1, so as to prevent the water entering the accommodation cavity from the water passing hole 2.325 from flowing out quickly, enabling the water quality sensor 4.1 to detect the water quality of the water with reduced flow rate in the accommodation cavity, so as to obtain more stable and accurate detection results.

[0080] Embodiment 2:

[0081] Based on any of the water circuit systems in Embodiment 1, a gas water heater with this water circuit system is formed. As shown in the attached Figure 1 to the attached Figure 6 figure, it includes a housing 1, and the water circuit system is placed inside the housing 1.

[0082] In this embodiment, the housing 1 includes a bottom case 1a and a panel 1b. The bottom case 1a has an accommodation cavity with an opening on one side. The water circuit system is installed in the accommodation cavity of the bottom case 1a, and the panel 1b is fixedly connected to the bottom case 1a, for example, by screws, and covers the opening of the accommodation cavity, forming a housing with the water circuit system installed inside.

[0083] When the water circuit system is installed inside the housing 1, the display screen 4.2 can be placed outside the housing 1. At this time, the display screen 4.2 can be directly installed on the outer surface of the housing 1, or a support frame can be provided outside the housing 1 to fixedly install the display screen 4.2.

[0084] However, considering that if the display screen 4.2 is installed on the surface of the housing 1, not only a relatively long connection line is required to electrically connect the display screen 4.2 and the water quality sensor 4.1, forming a complicated wiring structure, but also when the housing 1 is disassembled, it is easy to pull the connection line and cause it to break.

[0085] Therefore, in this embodiment, as shown in the attached Figure 1 figure, the display screen 4.2 is arranged inside the housing 1 and preferably close to the water supply pipeline 2 to avoid the above-mentioned wiring situation. At the same time, a window 1.1 is provided on the housing 1, and the window 1.1 is arranged opposite to the display screen 4.2 of the water quality monitoring device 4. For example, as shown in the attached Figure 1 figure, in this embodiment, a window 1.1 opposite to the display screen 4.2 is provided on the panel 1b. Through the window 1.1, the water quality displayed on the display screen 4.2 can be directly observed from outside the housing 1. That is, without disassembling the panel 1b, the water quality situation displayed on the display screen 4.2 can be observed more quickly and directly from outside the housing 1.

[0086] Furthermore, considering that after being heated by the heat exchanger 6, some heat-soluble impurities or bacteria in the water are easily eliminated, reducing the impact on the TDS value detection. Therefore, in this embodiment, the water quality sensor 4.1 is preferably arranged in the outlet pipeline 2.3 of the water supply pipeline 2 to detect the water quality of the water treated by heating in the outlet pipeline 2.3, so as to obtain a more accurate and required water quality detection result.

[0087] The above are only the preferred embodiments of the present invention, and do not limit the scope of the present invention. In addition, in the embodiments of the present invention, the terms "vertical", "horizontal", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product is usually placed during use. It is only for the convenience of describing the present invention 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, so it cannot be understood as a limitation of the present invention. It should be further noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. in the description should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0088] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A waterway system for use in a gas water heater, characterized in that, Comprising: A water supply pipeline (2) for water supply to flow through, wherein the water supply pipeline (2) is provided with: An ionization purification device (5) for purifying the water in the water supply pipeline (2); A sterilization device (6) for sterilizing the water in the water supply pipeline (2), the sterilization device (6) comprising: an ultraviolet lamp for irradiating the water in the water supply pipeline (2); The ultraviolet lamp is configured to emit ultraviolet light with a wavelength range of 265 - 580 nm.

2. The waterway system according to claim 1, characterized in that: The water supply pipeline (2) is further provided with a water quality monitoring device (4), which comprises: A water quality sensor (4.1) for detecting the water quality of the water in the water supply pipeline (2); A display screen (4.2) electrically connected to the water quality sensor (4.1), the display screen (4.2) being configured to receive the water quality value detected by the water quality sensor (4.1) and display the water quality situation.

3. The waterway system according to claim 2, wherein: The water quality monitoring device (4) further comprises: an independently provided battery (4.3); Both the water quality sensor (4.1) and the display screen (4.2) are powered by being electrically connected to the battery (4.3).

4. The waterway system according to claim 3, characterized in that: The water supply pipeline (2) comprises: two outlet pipes (2.31) arranged at intervals, and a water tank body (2.32) for connecting the two outlet pipes (2.31); The water tank body (2.32) has: a water flow chamber (2.321) for connecting the two outlet pipes (2.31), and the diameter of the water flow chamber (2.321) is larger than the diameter of the outlet pipe (2.31); The water quality sensor (4.1) is placed in the water flow chamber (2.321) to detect the water quality.

5. The waterway system according to claim 4, characterized in that: The water tank body (2.32) is detachably fixed between the two outlet pipes (2.31).

6. The waterway system according to claim 5, wherein: For each of the outlet pipes (2.31), an insertion pipe (2.322) is provided on the water tank body (2.32) to match the outlet pipe (2.31), and the outlet pipe (2.31) is inserted into the insertion pipe (2.322) to communicate with the water flow chamber (2.321); Moreover, the insertion pipe (2.322) and the outlet pipe (2.31) inserted into the insertion pipe (2.322) are detachably connected through a buckling structure.

7. The waterway system according to claim 6, characterized in that: The buckling structure comprises: A first flange (2.323) provided on the outer periphery of the insertion pipe (2.322); A second flange (2.311) provided on the outer periphery of the outlet pipe (2.31), when the outlet pipe (2.31) is inserted into the insertion pipe (2.322), the second flange (2.311) is adapted to fit on the first flange (2.323); It further comprises a detachable clip (2.33), which is configured to: limit the first flange (2.323) and the second flange (2.311) to fit together, so that the insertion pipe (2.322) and the outlet pipe (2.31) inserted into the insertion pipe (2.322) are detachably connected.

8. The waterway system according to claim 7, characterized in that: The clip (2.33) comprises: Two clamps (2.331) spaced on both sides of the water outlet pipe (2.31), and a connecting arm (2.332) connecting the two clamps (2.331); Each of the clamps (2.331) is provided with a clamping hole (2.333), and the mutually fitting first flange (2.323) and the second flange (2.311) are jointly installed in the clamping hole (2.333) so that: the first flange (2.323) and the second flange (2.311) are restricted to fit together; Moreover, the connecting arm (2.332) has elasticity so as to be able to: by driving the connecting arm (2.332) to undergo an elongation deformation, make the clip (2.33) in a detachable state.

9. The waterway system according to claim 6, characterized in that: A seal (2.34) for filling the gap between the water outlet pipe (2.31) and the inner wall of the water tank body (2.32) is provided between the water outlet pipe (2.31) and the inner wall of the water tank body (2.32).

10. Gas water heater, characterized in that: It includes the water circuit system according to any one of claims 1 to 9.

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