Pipeline system and gas water heater with same

Abstract

The utility model relates to the technical field of water heaters, in particular to a pipeline system and a gas water heater with the same, and the pipeline system comprises a water supply pipeline, a water supply pipeline and a water supply pipeline, the side pipe is arranged on one side of the water supply pipeline and provided with a containing cavity communicated with the conveying flow channel, and a sterilization lamp is installed in the containing cavity. The pipeline system is provided with the sterilizing lamp, and the sterilizing lamp can sterilize water more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, and more specifically to a pipeline 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] A gas water heater includes a pipeline system formed by connecting several pipelines for water supply to circulate, enabling water to flow along a required path. In some existing gas water heater pipeline systems, a sterilization lamp (such as an ultraviolet lamp) is provided; by irradiating the water in the pipeline system with the sterilization lamp, the water in the pipeline system is sterilized to optimize the water quality so as to output better-quality hot water.

[0004] It should be noted that most existing sterilization lamps are directly placed in the water supply pipeline of the pipeline system. This not only obstructs the water flow in the water supply pipeline, but also under the impact of the water flow, the sterilization lamp often cannot stably sterilize the water and is prone to failure. Summary of the Utility Model

[0005] One of the purposes of the present utility model is to provide, in view of the deficiencies of the prior art, a pipeline system with a sterilization lamp that can more stably sterilize water.

[0006] Another purpose of the present utility model is to provide a gas water heater with the above pipeline system.

[0007] The technical solution measures of the present utility model are as follows:

[0008] A pipeline system, comprising:

[0009] A water supply pipeline having a conveying channel for water supply to circulate;

[0010] A side pipe provided on one side of the water supply pipeline and having a placement cavity communicating with the conveying channel, and a sterilization lamp is installed in the placement cavity.

[0011] Further as a preferred solution, an installation opening is provided at one end of the placement cavity away from the conveying channel for the sterilization lamp to enter and exit the placement cavity;

[0012] At the installation opening, there is provided a cover plate for covering the installation opening;

[0013] The cover plate is detachably fixed to the side pipe.

[0014] Further as a preferred solution, the sterilization lamp is fixed to the side of the cover plate facing the placement cavity.

[0015] Further as an optimal solution, the sterilization lamp includes:

[0016] A mounting post fixedly connected to one side of the cover plate facing the storage cavity;

[0017] A transparent lamp cover detachably sleeved on the outer periphery of the mounting post, and an installation cavity not communicating with the external space is formed at an interval from the end of the mounting post;

[0018] A lamp tube installed in the installation cavity;

[0019] A power supply structure for supplying power to the lamp tube and arranged in the mounting post.

[0020] Further as an optimal solution, the pipeline system further includes a gasket filled between the sterilization lamp and the side wall of the storage cavity.

[0021] Further as an optimal solution, in the direction from the sterilization lamp to the side wall of the storage cavity, the gasket sequentially includes: a gasket body, and a sealing rib protruding from the gasket body.

[0022] Further as an optimal solution, the gasket body is an annular member adapted to be sleeved on the outer periphery of the sterilization lamp;

[0023] The sealing rib is an annular protrusion surrounding the gasket body.

[0024] Further as an optimal solution, a protective cover is provided in the channel formed by the connection of the storage cavity and the conveying flow channel, which is located on the side of the sterilization lamp facing the conveying flow channel and has a plurality of light passing holes to form a mesh structure for preventing the sterilization lamp from falling into the conveying flow channel.

[0025] Further as an optimal solution, the protective cover is provided with an article clamping groove, and the notch of the article clamping groove faces the sterilization lamp.

[0026] A gas water heater includes the pipeline system described in any of the above solutions.

[0027] The main beneficial effects of the above technical solutions are as follows:

[0028] A side pipe is provided on one side of the water supply pipeline, and the sterilization lamp is installed in the storage cavity communicating with the conveying flow channel, so that while the sterilization lamp can sterilize the water flow in the conveying flow channel, the impact of the water flow in the conveying flow channel is weakened, enabling the sterilization lamp to more stably sterilize the water.

[0029] Further or more detailed beneficial effects will be described in combination with specific embodiments in the specific implementation manners. Description of the Drawings

[0030] The following further describes the present utility model in conjunction with the accompanying drawings:

[0031] Figure 1 It is a schematic diagram of the overall structure of the pipeline system.

[0032] Figure 2 It is a schematic cross-sectional view of the installation of the protective cover Figure 1 .

[0033] Figure 3 It is a schematic cross-sectional view of the installation of the protective cover Figure 2 .

[0034] Figure 4 It is a schematic cross-sectional view of the installation of the protective cover Figure 3 .

[0035] As shown in the figure: water supply pipeline - 1, conveying channel - 1.1, side pipe - 2, storage cavity - 2.1, limiting part - 2.2, installation opening - 2.3, clamping groove - 2.31, supporting part - 2.4, sterilization lamp - 3, installation column - 3.1, lamp cover - 3.2, installation cavity - 3.3, lamp tube - 3.4, protective cover - 4, light passing hole - 4.1, object clamping groove - 4.2, overlapping part - 4.3, cover plate - 5, fastener - 6, sealing gasket - 7, sealing gasket body - 7a, sealing rib - 7b, flange part - 7.1, heat exchanger housing - 8. Specific embodiments

[0036] The following specifically exemplifies the present utility model in conjunction with embodiments:

[0037] Embodiment 1:

[0038] A pipeline system for supplying water and flowing in a gas water heater.

[0039] Specifically, as shown in Figure 1 to Figure 4 In the figure, the pipeline system in this embodiment includes a water supply pipeline 1. The water supply pipeline 1 is a long pipeline formed by connecting several pipes and joints, and has a conveying channel 1.1 for water supply to flow. The water supply pipeline 1 is extended according to the path where the water needs to flow, so that the water can flow in the conveying channel 1.1 according to the required path.

[0040] In order to sterilize the water flowing in the water supply pipeline 1 to optimize the water quality. In this embodiment, a sterilization lamp 3 is provided. The sterilization lamp 3 is a lamp assembly having, for example, an ultraviolet lamp, which can emit ultraviolet rays with a wavelength of 265 - 580 mn, irradiate the water flowing in the water supply pipeline 1, and sterilize to purify the water quality.

[0041] Specifically, as shown in Figure 2 to Figure 3As shown in the figure, in this embodiment, a side pipe 2 is provided on one side of the water supply pipe 1. The side pipe 2 is welded to one side wall of the water supply pipe 1; or the side pipe 2 is a part of the joint that constitutes the water supply pipe 1. At the same time, a storage cavity 2.1 is formed inside the side pipe 2 in a cavity shape, as shown in the appendix Figure 2 As shown in the figure, the lower end opening of the storage cavity 2.1 communicates with the conveying flow channel 1.1.

[0042] In this embodiment, the germicidal lamp 3 is arranged in the storage cavity 2.1. During operation, the ultraviolet rays emitted by the germicidal lamp 3 irradiate into the conveying flow channel 1.1 through the connection path between the storage cavity 2.1 and the conveying flow channel 1.1 to sterilize the water flow in the conveying flow channel 1.1. In this way, on the one hand, it can avoid the germicidal lamp 3 from hindering the flow of water in the conveying flow channel 1.1; on the other hand, the flowing water in the conveying flow channel 1.1 is not easy to impact the germicidal lamp 3, enabling the germicidal lamp 3 to more stably sterilize the water.

[0043] On the above basis, in order to facilitate the installation of the germicidal lamp 3.

[0044] As shown in the appendix Figure 2 To appendix Figure 4 As shown in the figure, at one end of the storage cavity 2.1 away from the conveying flow channel 1.1 (for example, the upper end of the storage cavity 2.1 shown in the appendix Figure 2 As shown in the figure), an installation opening 2.3 is provided. The diameter of the installation opening 2.3 is set according to the size of the germicidal lamp 3 to form an opening for the germicidal lamp 3 to enter and exit the storage cavity 2.1.

[0045] At the same time, a cover plate 5 for covering the installation opening 2.3 is provided at the installation opening 2.3, and the cover plate 5 is detachably fixed to the side pipe 2.

[0046] Specifically, as shown in the appendix Figure 1 As shown in the figure, a support portion 2.4 is convexly provided on the outer edge of the installation opening 2.3. The cover plate 5 is fixed on the support portion 2.4 through a fastener 6 (such as a screw) and covers and seals the installation opening 2.3.

[0047] During assembly, by removing the cover plate 5, the germicidal lamp 3 can be placed into the storage cavity 2.1 from the installation opening 2.3, and then the cover plate 5 is covered on the installation opening 2.3 to complete the installation.

[0048] In this embodiment, the cover plate 5 is detachably fixed to the side pipe 2 through at least two fasteners 6 (such as screws), and the two fasteners 6 are respectively placed on both sides of the installation opening 2.3 to more stably fix the cover plate 5.

[0049] Furthermore, in the above solution, the germicidal lamp 3 can be fixed in the storage cavity 2.1 through structures such as buckles or screws.

[0050] In this embodiment, the germicidal lamp 3 is preferably fixedly connected to one side of the cover plate 5 facing the storage cavity 2.1. On the one hand, this enables the germicidal lamp 3 to be disassembled and assembled synchronously with the cover plate 5, improving the convenience of subsequent maintenance; on the other hand, it avoids the need to additionally set up a positioning structure in the narrow space of the storage cavity 2.1.

[0051] Specifically, in this embodiment, the germicidal lamp 3 includes: a mounting post 3.1, a lamp cover 3.2, a lamp tube 3.4, and a power supply structure for supplying power to the lamp tube 3.4.

[0052] Among them, the mounting post 3.1 is fixedly connected to one side of the cover plate 5 facing the storage cavity 2.1 through, for example, a screw structure, or the mounting post 3.1 is configured to be integrally formed with the cover plate 5 to fix the germicidal lamp 3 to the cover plate 5. A lamp cover 3.2 made of a transparent material such as an acrylic plate is sleeved on the outer periphery of the mounting post 3.1; and, as shown in the appendix Figure 3 an installation cavity 3.3 that is not connected to the external space is formed at an interval between the end of the lamp cover 3.2 and the mounting post 3.1.

[0053] The lamp tube 3.4 is, for example, an ultraviolet lamp tube that can emit ultraviolet rays, and it is adaptively installed in the installation cavity 3.3. For example, an installation groove can be provided on the mounting post 3.1, and the lamp tube 3.4 can be positioned and installed in the installation groove. At this time, the power supply structure can be: a battery provided in the mounting post 3.1 and electrically connected to the lamp tube 3.4 to supply power to the lamp tube 3.4; or, a power cord provided in the mounting post 3.1, one end of which is electrically connected to the lamp tube 3.4 and the other end passes through the cover plate 5 and is exposed, and the exposed end of the power cord is connected to an external power supply to supply power to the lamp tube 3.4.

[0054] The lamp cover 3.2 is preferably detachably sleeved on the mounting post 3.1 through, for example, a threaded structure to facilitate the maintenance of the lamp tube 3.4.

[0055] Furthermore, as shown in the appendix Figure 1 to the appendix Figure 4 a sealing gasket 7 can also be additionally provided, which is filled between the germicidal lamp 3 and the side wall of the storage cavity 2.1 to fill the gap between the germicidal lamp 3 and the storage cavity 2.1 and support and position the germicidal lamp 3.

[0056] Still further, the sealing gasket 7 in this embodiment is preferably made of elastic materials such as rubber or silica gel and has elasticity. Moreover, the sealing gasket 7 is filled in a compressed state between the germicidal lamp 3 and the side wall of the storage cavity 2.1. On the one hand, it can support the germicidal lamp 3 and improve the installation stability of the germicidal lamp 3 so that it can irradiate and sterilize more stably; on the other hand, it can form an elastic buffer structure between the germicidal lamp 3 and the inner wall of the storage cavity 2.1, reducing the possibility of the germicidal lamp 3 being damaged after being impacted.

[0057] In this embodiment, as shown in the appendix Figure 3 As shown, in order for the gasket 7 to be inserted more easily between the germicidal lamp 3 and the inner wall of the storage cavity 2.1, in the direction from the germicidal lamp 3 to the side wall of the storage cavity 2.1, the gasket 7 sequentially includes: a gasket body 7a, and a sealing rib 7b protruding from the gasket body 7a. By making the sealing rib 7b in contact with the side wall of the storage cavity 2.1, the contact area between the gasket 7 and the side wall of the storage cavity 2.1 can be reduced, the frictional force during the installation of the gasket 7 can be weakened, and the smoothness of its installation can be improved.

[0058] Moreover, the sealing rib 7b is preferably arranged at: one end of the gasket 7 close to the installation opening 2.3. In this way, when the end of the gasket 7 without the sealing rib 7b (for example, the lower end of the gasket 7 in the appendix Figure 4 is to be inserted into the storage cavity 2.1, since there is no sealing rib 7b, the outer diameter of this end is smaller, and it can be inserted into the storage cavity 2.1 more easily. As the insertion depth increases, the sealing rib 7b is inserted into the storage cavity 2.1 accordingly, improving the sealing effect.

[0059] The gasket 7 is preferably arranged to fit the outer contour of the germicidal lamp 3, so as to be an annular part that can be sleeved on the outer periphery of the germicidal lamp 3, so as to better position and protect the germicidal lamp 3.

[0060] When the gasket 7 is an annular part, the gasket body 7a is an annular part that can be sleeved on the outer periphery of the germicidal lamp 3, and the sealing rib 7b is an annular protrusion surrounding the gasket body 7a.

[0061] At this time, the gasket 7 is sleeved outside the lamp cover 3.2 and can form an elastic seal between the germicidal lamp 3 and the inner wall of the storage cavity 2.1 to prevent the water flow in the storage cavity 2.1 from flowing out through the installation opening 2.3.

[0062] Moreover, during installation, the gasket 7 is first sleeved on the germicidal lamp 3, and then the germicidal lamp 3 and the gasket 7 are inserted into the storage cavity 2.1 together from the installation opening 2.3.

[0063] In order for the germicidal lamp 3 sleeved with the gasket 7 to be inserted into the storage cavity 2.1 more easily and smoothly together from the installation opening 2.3. As shown in the appendix Figure 3 and the appendix Figure 4 As shown, in this embodiment, the sealing rib 7b is preferably arranged to extend obliquely, so that the side surface of the sealing rib 7b facing the conveying channel 1.1 is: an inclined surface for guiding the gasket 7 to be inserted into the storage cavity 2.1.

[0064] Furthermore, as shown in the appendix Figure 3 to the appendix Figure 4As shown in the figure, the outer periphery of the gasket 7 near one end close to the cover plate 5 is provided with a raised flange portion 7.1; specifically, in this embodiment, the outer periphery of the gasket body 7a near one end close to the cover plate 5 is provided with a raised flange portion 7.1. The flange portion 7.1 is also made of elastic materials such as rubber or silica gel, and is filled in a compressed manner between the cover plate 5 and the side pipe 2. In order to form a sealing structure between the cover plate 5 and the side pipe 2 to prevent the water flow in the storage cavity 2.1 from flowing out through the installation opening 2.3.

[0065] Furthermore, the side wall of the installation opening 2.3 is provided with a clamping groove 2.31 that opens towards the cover plate 5; the flange portion 7.1 is adaptively filled in the clamping groove 2.31 to improve the installation stability of the flange portion 7.1, so as to form a seal between the cover plate 5 and the side pipe 2 more stably.

[0066] On the basis of the above solution, considering that in actual production, it is found that when the pipeline system is assembled into the gas water heater as a whole, or when the pipeline system is transported and moved in the gas water heater, it is very easy to receive impacts or shocks, resulting in the breaking of the sterilization lamp 3. And the fragments generated after the sterilization lamp 3 is damaged are likely to fall from the storage cavity 2.1 into the conveying channel 1.1 and flow with the water in the conveying channel 1.1. This not only easily damages the water supply pipeline 1, but also is likely to cause safety accidents when flowing out with the water, which is very dangerous.

[0067] Based on this, as shown in the attached Figure 2 to the attached Figure 4 In this embodiment, a protective cover 4 is provided in the channel formed by the connection of the storage cavity 2.1 and the conveying channel 1.1, and it is located on the side of the sterilization lamp 3 facing the conveying channel 1.1; moreover, a plurality of light passing holes 4.1 are provided on the protective cover 4, and the light passing holes 4.1 are holes provided on the protective cover 4 for communicating the storage cavity 2.1 and the conveying channel 1.1. The mesh number of the light passing holes 4.1 provided on the protective cover 4 is generally preferably 30 to 60 meshes.

[0068] That is, the protective cover 4 with the light passing holes 4.1 forms a mesh cover that prevents the sterilization lamp 3 from falling into the conveying channel 1.1. When the sterilization lamp 3 (as described above, the sterilization lamp 3 is a lamp assembly with an ultraviolet lamp, such as a UV lamp) is broken as described above, the fragments will be blocked in the storage cavity 2.1 by the protective cover 4 to avoid falling into the conveying channel 1.1. Moreover, when the sterilization lamp 3 emits ultraviolet rays as described above, the ultraviolet rays can irradiate from the storage cavity 2.1 to the conveying channel 1.1 through the light passing holes 4.1 to sterilize the water flow in the conveying channel 1.1.

[0069] At this time, the diameter of the installation opening 2.3 is set according to the sizes of the sterilization lamp 3 and the protective cover 4 to form an opening for the sterilization lamp 3 and the protective cover 4 to enter and exit the storage cavity 2.1.

[0070] During assembly, by removing the cover plate 5, the protective cover 4 can be placed into the storage cavity 2.1 from the installation opening 2.3. By overlapping the overlapping portion 4.3 of the protective cover 4 on the limiting portion 2.2, the protective cover 4 can be installed in place. Subsequently, the germicidal lamp 3 is placed into the storage cavity 2.1 from the installation opening 2.3, and then the cover plate 5 is covered on the installation opening 2.3, thus completing the installation.

[0071] In order for the germicidal lamp 3 to better sterilize the water flow in the conveying channel 1.1, the protective cover 4 has a transparent light-transmitting portion through which the light emitted by the germicidal lamp 3 can pass and irradiate into the conveying channel 1.1. For example, part or all of the protective cover 4 is made of transparent acrylic board to form a light-transmitting portion, so that when the germicidal lamp 3 emits ultraviolet rays as described above, the ultraviolet rays can directly pass through the light-transmitting portion to irradiate the water flow in the conveying channel 1.1 for sterilization. Or, the main body portion of the protective cover 4 is made of stainless steel, and a part is made of transparent acrylic board, and the transparent part forms a light-transmitting portion.

[0072] Moreover, in order to better accommodate the fragments when the germicidal lamp 3 is broken; as shown in the appendix Figure 3 As shown, the protective cover 4 is provided with an object-catching groove 4.2, and the notch of the object-catching groove 4.2 is arranged facing the germicidal lamp 3. After the germicidal lamp 3 is broken, more of its fragments can be placed in the object-catching groove 4.2 instead of flowing around; it is convenient to process the fragments subsequently.

[0073] For the protective cover 4, it can be arranged in the conveying channel 1.1 and cover the lower end opening of the storage cavity 2.1 in the direction from the conveying channel 1.1 to the storage cavity 2.1. However, in this way, the protective cover 4 is likely to obstruct the water flow in the conveying channel 1.1.

[0074] Therefore, in this embodiment, the protective cover 4 is preferably installed in the storage cavity 2.1. And, the outer contour size of the protective cover 4 is preferably adapted to the inner wall contour of the storage cavity 2.1, so that when the protective cover 4 is installed in the storage cavity 2.1 as shown in the appendix Figure 4 As shown, the protective cover 4 can be fitted into the storage cavity 2.1 to better prevent the germicidal lamp 3 from falling into the conveying channel 1.1.

[0075] Furthermore, to enable the protective cover 4 to be placed more stably in the storage cavity 2.1, as shown in appendix Figure 2 to appendix Figure 4 As shown, a limiting portion 2.2 is convexly arranged on the side wall of the storage cavity 2.1; the protective cover 4 is provided with an overlapping portion 4.3, and in the direction from the storage cavity 2.1 to the conveying channel 1.1, the overlapping portion 4.3 abuts against the limiting portion 2.2 to prevent the protective cover 4 from shifting into the conveying channel 1.1.

[0076] To improve the limiting effect and the positioning stability of the protective cover 4, the limiting portion 2.2 is preferably an annular protrusion provided around the inner wall of the storage cavity 2.1, and the overlapping portion 4.3 is an annular flange structure provided around the outer edge of the protective cover 4 and adapted to overlap on the annular limiting portion 2.2.

[0077] Embodiment 2:

[0078] The gas water heater includes the pipeline system described in any one of the solutions in Embodiment 1, as well as a heat exchanger housing 8, a burner, a blower, etc.

[0079] The heat exchanger housing 8 has a flue gas flow path for the high-temperature flue gas generated by the combustion of the burner to flow. A part of the water supply pipeline 1 in the pipeline system is wound around the outside of the heat exchanger housing 8, or has a part inserted into the heat exchanger housing 8 and placed in the flue gas flow path. When high-temperature flue gas flows through the flue gas flow path, the water in the water supply pipeline 1 can exchange heat with the high-temperature flue gas to increase the temperature.

[0080] The above are only the preferred embodiments of the present invention and do not limit the scope of the present invention. In addition, the terms "vertical", "horizontal", "front", "rear", etc. mentioned in the embodiments of the present invention 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. They are 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, and therefore 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 a direct connection, or an indirect connection through an intermediate medium, or the internal connection 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 the embodiments.

[0081] 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 piping system, characterized in that: include: A water supply pipeline (1) having a conveying flow channel (1.1) for water to flow; The side pipe (2) is arranged on one side of the water supply pipeline (1) and has a storage cavity (2.1) connected to the delivery channel (1.1), and a sterilization lamp (3) is installed in the storage cavity (2.1).

2. The piping system according to claim 1, characterized in that: An installation opening (2.3) is provided at one end of the storage cavity (2.1) away from the delivery channel (1.1), for allowing the sterilization lamp (3) to enter and exit the storage cavity (2.1); The installation opening (2.3) is provided with: a cover plate (5) for sealing the installation opening (2.3); The cover plate (5) is detachably fixed to the side tube (2).

3. The piping system according to claim 2, characterized in that: The sterilization lamp (3) is fixedly connected to a side surface of the cover plate (5) facing the storage cavity (2.1).

4. The piping system according to claim 3, characterized in that: The sterilization lamp (3) comprises: A mounting column (3.1) fixedly connected to a side surface of the cover plate (5) facing the storage cavity (2.1); A transparent lampshade (3.2) is detachably mounted on the outer periphery of the mounting column (3.1) and is spaced apart from the end of the mounting column (3.1) to form a mounting cavity (3.3) that is not connected to the external space; A lamp tube (3.4) installed in the installation cavity (3.3); A power supply structure is used to supply power to the lamp tube (3.4) and is arranged in the mounting column (3.1).

5. The piping system according to claim 4, characterized in that: The pipeline system also includes a sealing gasket (7) which is filled between the sterilization lamp (3) and the side wall of the storage cavity (2.1).

6. The piping system according to claim 5, characterized in that: In the direction from the sterilization lamp (3) to the side wall of the storage cavity (2.1), the sealing gasket (7) comprises in sequence: a sealing gasket body (7a), and a sealing rib (7b) protrudingly arranged on the sealing gasket body (7a).

7. The piping system according to claim 6, characterized in that: The sealing pad body (7a) is an annular member adapted to be mounted on the outer periphery of the sterilization lamp (3); The sealing rib (7b) is an annular protrusion arranged around the sealing gasket body (7a).

8. The piping system according to claim 4, characterized in that: A protective cover (4) is provided in the channel formed by the connection between the storage cavity (2.1) and the conveying channel (1.1), which is located on the side of the sterilization lamp (3) facing the conveying channel (1.1) and has a plurality of light holes (4.1) to form a mesh cover structure that prevents the sterilization lamp (3) from falling into the conveying channel (1.1).

9. The piping system according to claim 8, characterized in that: The protective cover (4) is provided with a retaining slot (4.2), and the notch of the retaining slot (4.2) is arranged toward the sterilization lamp (3).

10. Gas water heater, characterized in that: A piping system comprising any one of claims 1 to 9.

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