Gas water heating equipment

Abstract

The utility model discloses gas water heating equipment, and relates to the technical field of water heating equipment, the gas water heating equipment comprises an equipment main body which is provided with an atomization module, and the atomization module is used for atomizing condensate water generated by the operation of the equipment main body; the smoke pipe is connected with the equipment main body, and the smoke pipe is used for discharging smoke generated by operation of the equipment main body and atomized condensate water; the smoke pipe comprises a first pipe body and a second pipe body, the first pipe body is arranged at the end, away from the equipment body, of the second pipe body, a smoke outlet of the equipment body is communicated with the first pipe body through the second pipe body, and the end, close to the second pipe body, of the first pipe body is inserted into the second pipe body. According to the technical scheme provided by the utility model, water dripping at the smoke pipe joint can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hot water equipment, in particular to a gas hot water equipment. Background Art

[0002] Traditional gas water heaters typically use a flue pipe connection scheme where the pipe at the end closest to the exhaust port is placed over the pipe at the end away from the exhaust port. However, for condensing gas water heaters, the flue pipe needs to be tilted upwards at a certain angle during installation. When the unit uses an atomization method to treat condensed water, the atomized condensed water can be discharged from the flue pipe along with the flue gas. If this traditional flue pipe connection scheme is still used, water dripping will occur at the joint. Therefore, a new flue pipe connection scheme is urgently needed to avoid water dripping at the joint and better suited for condensing gas water heaters. Utility Model Content

[0003] The main purpose of the utility model is to provide a gas water heater, which is designed to avoid water dripping at the connection of the smoke pipe.

[0004] To achieve the above-mentioned purpose, the gas water heater proposed in this utility model includes:

[0005] The device body has an atomization module, the atomization module is used to atomize condensed water generated by the operation of the device body; and

[0006] A smoke pipe is connected to the device body and is used to discharge the smoke generated by the operation of the device body and the condensed water after atomization; the smoke pipe includes a first tube body and a second tube body, the first tube body is arranged at an end of the second tube body away from the device body, the smoke outlet of the device body is connected to the first tube body via the second tube body, and the end of the first tube body close to the second tube body is inserted into the second tube body.

[0007] In one embodiment, the gas water heater has an installation state for wall installation. In the installation state, the smoke pipe is tilted upward relative to the horizontal plane, the first pipe body is located at a high position of the smoke pipe, and the second pipe body is located at a low position of the smoke pipe.

[0008] In one embodiment, the second tube body includes a tube body and a sleeve portion provided at one end of the tube body, the inner diameter of the sleeve portion is larger than the inner diameter of the tube body, and the end of the first tube body close to the second tube body is inserted into the sleeve portion.

[0009] In one embodiment, the sleeve portion is interference fit with the first tube body;

[0010] And / or, the second tube body further includes a transition portion connecting the tube body and the sleeve portion, and the inner diameter of the transition portion is gradually reduced from the sleeve portion toward the tube body.

[0011] In one embodiment, the smoke pipe further includes a bend connecting the device body and the second tube body, the smoke outlet of the device body is connected to the second tube body via the bend, and the end of the second tube body away from the first tube body is inserted into the bend.

[0012] In one embodiment, the first tube body has an opening communicating with the second tube body, an end of the first tube body away from the opening is provided with an end cover, and a peripheral wall of the first tube body close to the end cover is provided with a plurality of smoke exhaust holes.

[0013] In one embodiment, the plurality of smoke exhaust holes are arranged on the downward side of the peripheral wall of the first tube body. The downward side of the peripheral wall of the first tube body is also provided with a drainage hole, which is located on the side of the plurality of smoke exhaust holes close to the second tube body.

[0014] In one embodiment, the drainage hole is a strip-shaped hole extending along the circumference of the first tube body.

[0015] In one embodiment, the multiple smoke exhaust holes include a first hole group and a second hole group arranged along the axial direction of the first tube body, the first hole group is located on the side of the second hole group away from the second tube body, the first hole group and the second hole group include multiple smoke exhaust holes, the multiple smoke exhaust holes of the first hole group are arranged around the peripheral wall of the first tube body, and the multiple smoke exhaust holes of the second hole group are arranged on the downward side of the peripheral wall of the first tube body.

[0016] In one embodiment, the plurality of smoke exhaust holes of the second hole group include a first smoke exhaust hole and a second smoke exhaust hole, wherein the second smoke exhaust hole is located at the bottom of the first smoke exhaust hole and is configured as a drainage hole extending along the circumference of the first tube body.

[0017] In one embodiment, a plurality of the second smoke exhaust holes are spaced apart along the axial direction of the first tube body, and a plurality of the first smoke exhaust holes are spaced apart at both ends of each of the second smoke exhaust holes.

[0018] The technical solution of the present invention is to connect a smoke pipe to the main body of the gas water heater, the main body of the equipment has an atomization module, the smoke pipe includes a first tube body and a second tube body, the first tube body is arranged at one end of the second tube body away from the main body of the equipment, and the smoke outlet of the main body of the equipment is connected to the first tube body via the second tube body. When installing the gas water heater, the first tube body and the second tube body can be extended in the horizontal direction (such as the left and right direction), and the first tube body and the second tube body can be tilted upward at a certain angle from the smoke inlet end of the smoke pipe toward the smoke outlet end, so that the first tube body is a tube body at a high position, and the second tube body is relatively lower than the position of the first tube body. In this way, the smoke generated during the operation of the main body of the equipment and the condensed water after being atomized by the atomization module can flow to the first tube body through the second tube body and then be discharged to the outside. When the flue gas containing atomized condensed water is discharged through the smoke pipe, even if some of the condensed water condenses in the first tube body and turns into liquid condensed water, the liquid condensed water can, under the action of gravity, flow downward from the relatively high first tube body into the second tube body, and then flow back through the second tube body to the atomization chamber of the device body to be atomized again. In addition, because the end of the first tube body close to the second tube body is inserted into the second tube body, the condensed water can flow smoothly into the second tube body when flowing through the connection between the first and second tube bodies, without leaking outward from the connection between the first and second tube bodies, thereby avoiding dripping at the connection of the smoke pipe, and is particularly well suited for condensing gas water heaters. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of an embodiment of a gas water heater provided by the present utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the middle smoke tube;

[0022] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle smoke tube;

[0023] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0024] Figure 5 for Figure 3 A partial enlarged view of point B in the middle;

[0025] Figure 6 This is a structural diagram of an embodiment of the first tube body;

[0026] Figure 7 Schematic diagram of the structure of another embodiment of the first tube.

[0027] Description of Figure Numbers:

[0028] 100. Gas water heater; 10. Equipment body; 20. Smoke pipe; 21. First pipe body; 201. Smoke exhaust hole; 201a. First smoke exhaust hole; 201b. Second smoke exhaust hole; 202. Drain hole; 211. End cover; 22. Second pipe body; 221. Pipe body; 222. Sleeve portion; 223. Transition portion; 23. Elbow.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] Traditional gas water heaters typically use a flue pipe connection scheme where the pipe at the end closest to the exhaust port is placed over the pipe at the end away from the exhaust port. However, for condensing gas water heaters, the flue pipe needs to be tilted upwards at a certain angle during installation. When the unit uses an atomization method to treat condensed water, the atomized condensed water can be discharged from the flue pipe along with the flue gas. If this traditional flue pipe connection scheme is still used, water dripping will occur at the joint. Therefore, a new flue pipe connection scheme is urgently needed to avoid water dripping at the joint and better suited for condensing gas water heaters.

[0034] The utility model provides a gas water heater, which can avoid dripping at the connection of the flue pipe by optimizing the design of the flue pipe connection structure of the gas water heater, so that it can be better applied to condensing gas water heaters with an atomization module.

[0035] See also Figures 1 to 4 In one embodiment of the present invention, the gas water heater 100 includes an equipment body 10 and a smoke pipe 20. The equipment body 10 has an atomization module, which is used to atomize condensed water generated by the operation of the equipment body 10; the smoke pipe 20 is connected to the equipment body 10 and is used to discharge the smoke generated by the operation of the equipment body 10 and the atomized condensed water; the smoke pipe 20 includes a first tube body 21 and a second tube body 22, the first tube body 21 is provided at an end of the second tube body 22 away from the equipment body 10, the smoke outlet of the equipment body 10 is connected to the first tube body 21 via the second tube body 22, and the end of the first tube body 21 close to the second tube body 22 is inserted into the second tube body 22.

[0036] The gas water heater 100 includes, but is not limited to, a gas water heater, a wall-mounted boiler, etc. Taking a gas water heater as an example, the gas water heater can be a forced-drum type gas water heater with a fan mounted below, or a forced-draw type gas water heater with a fan mounted above; the gas water heater can be a normal-firing type gas water heater with a burner mounted below, or a reverse-firing type gas water heater with a burner mounted above, and the specific model is not specifically limited here.

[0037] In this embodiment, the gas water heater 100 includes an equipment body 10 and a smoke pipe 20. Taking the gas water heater 100 as a strong-drum normal-firing condensing gas water heater as an example, the equipment body 10 may include a fan, a burner, a combustion chamber box, a main heat exchanger, a smoke hood and a condensing atomizing device arranged in sequence from bottom to top. Among them, the condensing atomizing device includes an atomizing cavity connected to the smoke hood, and a condensing heat exchanger and an atomizing module arranged in the atomizing cavity. The condensing heat exchanger is connected to the main heat exchanger through a pipe. The smoke outlet of the equipment body 10 is opened in the atomizing cavity, and the smoke inlet end of the smoke pipe 20 is connected to the smoke outlet of the equipment body 10. The smoke outlet end of the smoke pipe 20 (that is, the end of the smoke pipe 20 provided with a smoke exhaust hole 201) is used to extend to the outside to discharge smoke and atomized condensed water to the outside. When installed, the smoke pipe 20 is extended horizontally (for example, left and right) as a whole, and the smoke pipe 20 needs to be tilted upward at a certain angle (for example, 0 to 5 degrees) relative to the horizontal plane, so that the smoke outlet end of the smoke pipe 20 is higher than the smoke inlet end of the smoke pipe 20.

[0038] When the gas water heater 100 is working, driven by the fan, the high-temperature flue gas generated by the burner combustion flows from bottom to top, passing through the combustion chamber box, the main heat exchanger, the smoke hood, and the condensing heat exchanger in sequence; at the same time, the external cold water is first transported to the condensing heat exchanger through the water inlet pipe for preheating, and then transported to the main heat exchanger through the condensing heat exchanger for further heating. The hot water generated in the main heat exchanger is output to the user's water use end through the water outlet pipe. The high-temperature flue gas first exchanges heat with the main heat exchanger and then is transported to the atomizing chamber through the smoke collecting hood for a second heat exchange with the condensing heat exchanger in the atomizing chamber. The flue gas after the second heat exchange can be discharged through the smoke pipe 20; during this period, when the flue gas exchanges heat with the condensing heat exchanger, condensed water will be generated on the surface of the condensing heat exchanger, and the condensed water will drip into the atomizing chamber for collection, and the condensed water can be atomized by the atomizing module in the atomizing chamber. The atomized condensed water can be discharged to the outside together with the flue gas through the smoke pipe 20. In this way, the gas water heater 100 does not need to install a drain pipe for discharging condensed water during installation, making the installation of the gas water heater 100 simpler and more convenient.

[0039] The smoke pipe 20 includes a first tube body 21 and a second tube body 22. The first tube body 21 is provided at the end of the second tube body 22 away from the device body 10. The smoke outlet of the device body 10 is connected to the first tube body 21 via the second tube body 22, so that the smoke generated by the operation of the device body 10 can be discharged through the second tube body 22 and the first tube body 21 in sequence. Optionally, a smoke exhaust hole 201 is provided at the portion of the first tube body 21 away from the second tube body 22. The smoke generated during the operation of the device body 10 and the condensed water atomized by the atomization module are first transported to the second tube body 22 via the smoke outlet, then flow into the first tube body 21, and finally discharged to the outside through the smoke exhaust hole 201 at the end of the first tube body 21. When the gas water heater 100 is installed, the first tube body 21 and the second tube body 22 are both extended in the horizontal direction (such as the left-right direction), and the first tube body 21 and the second tube body 22 are both tilted upward at a certain angle from the smoke inlet end of the smoke pipe 20 toward the smoke outlet end, so that the first tube body 21 is a tube body at a higher position, and the second tube body 22 is relatively lower than the position of the first tube body 21. In this way, when the flue gas carrying atomized condensed water is discharged through the smoke pipe 20, even if some of the condensed water condenses in the first tube body 21 and becomes liquid condensed water, the liquid condensed water can also flow back downward from the relatively high first tube body 21 to the second tube body 22 under the action of gravity, and then flow back through the second tube body 22 to the atomization cavity of the device body 10 to be atomized again. Furthermore, since one end of the first tube body 21 close to the second tube body 22 is inserted into the second tube body 22, that is, the second tube body 22 is wrapped outside the first tube body 21, when the condensed water flows through the connection between the first tube body 21 and the second tube body 22, it can flow smoothly into the second tube body 22 without leaking outward from the connection between the first tube body 21 and the second tube body 22, thereby avoiding dripping at the connection of the smoke pipe 20.

[0040] The first tube body 21 and the second tube body 22 may be, but are not limited to, round tubes, square tubes, or other shapes, as long as the end of the first tube body 21 closest to the second tube body 22 can be inserted into the second tube body 22 and the connection between the two can be sealed. Optionally, the first tube body 21 and the second tube body 22 may be configured as circular tubes extending substantially in a straight line, which can reduce smoke flow resistance and facilitate smooth smoke exhaust. The overall structure is simple and easy to manufacture. Optionally, both the first tube body 21 and the second tube body 22 may be stainless steel, which offers high structural strength and excellent heat and corrosion resistance. A smoke exhaust hole 201 is provided at the end of the first tube body 21 distal to the second tube body 22 to facilitate smoke exhaust to the outside. The number of smoke exhaust holes 201 may be one, two, three, or more, depending on actual needs. To ensure more uniform and smooth smoke exhaust, multiple smoke exhaust holes 201 may be provided, arranged along the circumferential wall of the first tube body 21 distal to the second tube body 22. The shape of the smoke exhaust hole 201 can be designed as a circular hole, a square hole, a strip hole or other special-shaped holes as needed. Optionally, the smoke exhaust hole 201 is a circular hole, which can simplify the manufacturing process of the smoke exhaust hole 201.

[0041] The technical solution of the present invention is to connect a smoke pipe 20 to the main body 10 of the gas water heater 100, and the main body 10 has an atomization module. The smoke pipe 20 includes a first tube body 21 and a second tube body 22. The first tube body 21 is arranged at the end of the second tube body 22 away from the main body 10 of the gas water heater 10, and the smoke outlet of the main body 10 is connected to the first tube body 21 via the second tube body 22. When installing the gas water heater 100, the first tube body 21 and the second tube body 22 can be extended in the horizontal direction (such as the left and right direction), and the first tube body 21 and the second tube body 22 can be tilted upward at a certain angle from the smoke inlet end of the smoke pipe 20 toward the smoke outlet end. In this way, the first tube body 21 is a tube body at a high position, and the second tube body 22 is relatively lower than the position of the first tube body 21. In this way, the smoke generated during the operation of the main body 10 and the condensed water atomized by the atomization module can flow to the first tube body 21 through the second tube body 22 and then be discharged to the outside. When the flue gas carrying atomized condensed water is discharged through the flue pipe 20, even if some of the condensed water condenses in the first tube body 21 and turns into liquid condensed water, the liquid condensed water can, under the action of gravity, flow downward from the relatively high first tube body 21 to the second tube body 22, and then flow back through the second tube body 22 to the atomization chamber of the device body 10 to be atomized again. In addition, since the end of the first tube body 21 close to the second tube body 22 is inserted into the second tube body 22, the condensed water can flow smoothly into the second tube body 22 when flowing through the connection between the first tube body 21 and the second tube body 22, and will not leak outward from the connection between the first tube body 21 and the second tube body 22, thereby avoiding dripping at the connection of the flue pipe 20, and is particularly well suited for the condensing gas water heater 100.

[0042] It is worth noting that the gas water heater 100 can have a natural state and an installed state. In the natural state, the gas water heater 100 is not mounted on a wall. In this state, the position of the flue 20 is unrestricted and the flue 20 can be tilted upward or downward at a certain angle relative to the horizontal plane, or can be parallel to the horizontal plane. In the installed state, the gas water heater 100 is mounted on a wall, and the flue 20 is limited by the wall so that the flue 20 has a certain tilt angle relative to the horizontal plane.

[0043] For example, in one embodiment, the gas water heater 100 has an installation state for wall mounting. In this installation state, the flue duct 20 is tilted upward relative to a horizontal plane, with the first tube body 21 located at a higher position of the flue duct 20 and the second tube body 22 located at a lower position of the flue duct 20. Thus, when water accumulates in the higher first tube body 21, the water will flow downward along the first tube body 21 under the action of gravity, and will continue to flow downward after flowing into the lower second tube body 22. Because the end of the first tube body 21 closest to the second tube body 22 is inserted into the second tube body 22, water will not leak outward from the connection between the first tube body 21 and the second tube body 22.

[0044] In order to facilitate the installation of the first tube body 21 and the second tube body 22, as shown in FIG. Figure 2 and Figure 3 As shown, in one embodiment, the second tube body 22 includes a tube body 221 and a sleeve portion 222 provided at one end of the tube body 221, the inner diameter of the sleeve portion 222 is larger than the inner diameter of the tube body 221, and the end of the first tube body 21 close to the second tube body 22 is inserted into the sleeve portion 222.

[0045] In this embodiment, the second tube body 22 includes a main tube body and a sleeve portion 222. Optionally, the main tube body and the sleeve portion 222 are integrally formed. The sleeve portion 222 and the main tube body are both arranged as circular tube segments extending in a straight line. The end of the sleeve portion 222 away from the main tube body forms a socket for the first tube body 21 to be inserted into. The first tube body 21 is inserted into the sleeve portion 222 via the socket of the sleeve portion 222. The outer circumferential wall of the first tube body 21 fits in contact with the inner circumferential wall of the sleeve portion 222, forming a reliable sealing structure. Because the inner diameter of the sleeve portion 222 is larger than the inner diameter of the tube body 221, a step structure is formed between the sleeve portion 222 and the tube body 221. This step structure limits the depth of insertion of the first tube body 21 into the second tube body 22, thereby ensuring accurate positioning and installation of the first and second tube bodies 21, and improving the installation convenience of the first and second tube bodies 21, 22. Furthermore, a stepped structure is formed between the sleeve portion 222 and the tube body 221, so that the end face of the first tube body 21 faces the stepped structure, allowing the inner diameter of the first tube body 21 to be roughly consistent with the inner diameter of the main body of the second tube body 22. This allows smoke to flow more smoothly from the main body of the second tube body 22 into the first tube body 21 during the smoke exhaust process, improving the smoothness of smoke exhaust. In addition, to further improve the sealing of the connection between the smoke tube 20, in actual applications, aluminum foil or sealing tape can be wrapped around the outer periphery of the connection between the first and second smoke tubes 20.

[0046] In one embodiment, the sleeve portion 222 is interference-fitted with the first tube body 21. This allows for a tighter fit between the contact area between the first tube body 21 and the sleeve portion 222, further improving the sealing reliability between the outer circumferential wall of the first tube body 21 and the outer circumferential wall of the sleeve portion 222, and making the connection structure between the first tube body 21 and the sleeve portion 222 more stable and reliable. Of course, in other embodiments, a certain gap may be provided between the sleeve portion 222 and the first tube body 21, and the first tube body 21 and the sleeve portion 222 may be fixedly connected by other fixing methods (e.g., welding, screw connection, clamp connection, etc.).

[0047] In order to prevent condensed water from accumulating at the connection between the sleeve portion 222 and the main body, the risk of water leakage at the connection of the smoke pipe 20 is further reduced. Figure 4 As shown, in one embodiment, the second tube body 22 further includes a transition portion 223 connecting the tube body 221 and the sleeve portion 222 , and the inner diameter of the transition portion 223 is gradually reduced from the sleeve portion 222 toward the tube body 221 .

[0048] In this embodiment, a transition portion 223 is provided between the tube body 221 and the sleeve portion 222. The transition portion 223 is truncated and tapered from the sleeve portion 222 toward the tube body 221. The inner circumferential wall of the transition portion 223 is inclined at a certain angle, providing a flow-guiding effect. As a result, when condensed water within the first tube body 21 flows back to the connection with the second tube body 22, it can flow more smoothly downward along the inner circumferential wall of the transition portion 223 into the second tube body 22. This prevents condensed water from accumulating at the step between the sleeve portion 222 and the main tube body, which could cause condensed water to leak outward.

[0049] Usually, the top of the device body 10 is provided with a smoke outlet opening upward, and the smoke pipe 20 needs to be arranged to extend horizontally as a whole during installation. In order to facilitate the installation of the smoke pipe 20 and the device body 10, as shown in FIG. Figure 3 and Figure 5 As shown, in one embodiment, the smoke pipe 20 also includes a bent pipe 23 connecting the device body 10 and the second tube body 22. The smoke outlet of the device body 10 is connected to the second tube body 22 via the bent pipe 23, and the end of the second tube body 22 away from the first tube body 21 is inserted into the bent pipe 23.

[0050] In this embodiment, the first end of the elbow 23 opens downward to facilitate connection to the smoke exhaust port of the device body 10, and the second end of the elbow 23 opens horizontally or slightly upward to facilitate connection to the second tube 22. The end of the second tube 22 away from the first tube 21 is inserted into the elbow 23. In this way, condensed water in the first tube 21 flows downward into the second tube 22, then flows into the elbow 23 through the second tube 22, and then flows back into the device body 10 through the elbow 23 to be atomized again. Furthermore, because the end of the first tube 21 closest to the second tube 22 is inserted into the second tube 22, and the end of the second tube 22 away from the first tube 21 is inserted into the elbow 23, the condensed water can continue to flow downward smoothly when passing through the connection between the first tube 21 and the second tube 22, and through the connection between the second tube 22 and the elbow 23, without leaking out from the connection of the smoke pipe 20, thereby further reducing the risk of dripping at the connection of the smoke pipe 20. Optionally, the curved pipe 23 includes a curved section and a first connecting section and a second connecting section, respectively, disposed at either end of the curved section. The first connecting section extends downward to connect to the device body 10, and the second connecting section extends laterally to connect to the second tube body 22. The end of the second tube body 22, distal from the first tube body 21, is inserted into the second connecting section. Optionally, the curved section of the curved pipe 23 is formed as a corrugated tube with a certain degree of deformability, so that the installation configuration of the smoke pipe 20 can be adjusted during installation.

[0051] Based on the above embodiments, Figure 3 As shown, in one embodiment, the first tube body 21 has an opening connected to the second tube body 22, and an end cover 211 is provided at one end of the first tube body 21 away from the opening, and a plurality of smoke exhaust holes 201 are provided on the peripheral wall of the first tube body 21 near the end cover 211.

[0052] In this embodiment, the end face of the first tube body 21 facing away from the second tube body 22 is sealed by an end cap 211. Multiple smoke exhaust holes 201 are provided on the peripheral wall of the first tube body 21 near the end cap 211. This prevents smoke from being discharged directly from the end face of the first tube body 21, allowing the smoke to diffuse and be discharged through the peripheral wall of the first tube body 21. This more effectively utilizes the natural convection principle of the flue, causing the smoke to form vortices within the smoke duct 20, increasing the contact area between the smoke and the inner wall of the smoke duct 20 and thus more efficiently discharging the smoke. Furthermore, the multiple smoke exhaust holes 201 provided on the peripheral wall of the first tube body 21 facilitate even distribution of smoke within the smoke duct 20, improving the speed and efficiency of smoke exhaust and ensuring that the smoke is quickly and effectively discharged outdoors. Furthermore, when negative pressure is generated inside or outside the smoke duct 20 (such as strong wind or reduced indoor air pressure), placing the smoke outlet directly on the end face of the smoke duct 20 may increase the risk of air backflow into the water heater. The peripheral wall of the first tube body 21 is designed with multiple smoke exhaust holes 201. Since the vortex formed by the smoke in the smoke pipe 20 will produce a certain resistance to the counterflow air, the occurrence of this backflow phenomenon can be reduced to a certain extent.

[0053] In one embodiment, the end cap 211 is tapered or truncated cone-shaped, tapering toward the second tube body 22. Thus, the inner wall of the end cap 211 has a certain degree of taper, thereby better directing the smoke gathered around the edge of the end cap 211 to the portion of the first tube body 21 where the smoke exhaust hole 201 is provided, thereby allowing the smoke to be discharged more smoothly from the smoke exhaust hole 201.

[0054] Since the smoke pipe 20 needs to be tilted upward when it is installed, according to this installation method, rainwater will flow into the smoke pipe 20 on rainy days, and then flow into the device body 10 along the smoke pipe 20, causing damage to the device body 10.

[0055] In order to reduce the risk of rainwater flowing back into the device body 10 along the smoke pipe 20, as shown in FIG. Figure 6 As shown, in one embodiment, the plurality of smoke exhaust holes 201 are arranged on the downward side of the peripheral wall of the first tube body 21, and the downward side of the peripheral wall of the first tube body 21 is also provided with a drainage hole 202, and the drainage hole 202 is located on the side of the plurality of smoke exhaust holes 201 close to the second tube body 22.

[0056] In this embodiment, the upward-facing peripheral wall of the first tube body 21 is closed, shielding rainwater from entering the interior of the smoke duct 20 through the upper peripheral wall. Multiple smoke exhaust holes 201 are arranged on the downward-facing side of the peripheral wall of the first tube body 21, reducing the probability of rainwater entering the smoke duct 20 through the smoke exhaust holes 201. Furthermore, the smoke duct 20 is provided with a drainage hole 202, located on the side of the multiple smoke exhaust holes 201 near the second tube body 22. Because the smoke duct 20 is tilted upward during installation, the drainage hole 202 is positioned lower than the multiple smoke exhaust holes 201. Even if rainwater enters the smoke duct 20 through the smoke exhaust hole 201, it can be drained from the smoke duct 20 through the drainage hole 202 as it flows downward along the smoke duct 20, preventing the rainwater from further flowing downward through the smoke duct 20 into the device body 10 and causing damage. The number of the drainage holes 202 can be one, two, three or more according to actual needs. The shape of the drainage holes 202 can be designed to be circular holes, square holes, strip holes or other special-shaped holes.

[0057] Alternatively, as Figure 6 As shown, the drainage hole 202 is a strip-shaped hole extending along the circumference of the first tube body 21. In this way, the area of ​​the drainage hole 202 can be increased, so that rainwater can be discharged from the smoke pipe 20 more quickly and effectively.

[0058] In order to reduce the risk of rainwater flowing back into the device body 10 along the smoke pipe 20, as shown in FIG. Figure 7 As shown, in another embodiment, the multiple smoke exhaust holes 201 include a first hole group and a second hole group arranged along the axial direction of the first tube body 21, the first hole group is located on the side of the second hole group away from the second tube body 22, the first hole group and the second hole group include multiple smoke exhaust holes 201, the multiple smoke exhaust holes 201 of the first hole group are arranged around the peripheral wall of the first tube body 21, and the multiple smoke exhaust holes 201 of the second hole group are arranged on the downward side of the peripheral wall of the first tube body 21.

[0059] In this embodiment, both the first hole group and the second hole group include multiple smoke exhaust holes 201. The multiple smoke exhaust holes 201 of the first hole group are arranged around the circumferential wall of the first tube body 21, which facilitates uniform exhaust of smoke from the circumferential wall of the first tube body 21, thereby improving the uniformity and smoothness of smoke exhaust. Furthermore, the multiple smoke exhaust holes 201 of the second hole group are arranged on the downward-facing circumferential wall of the first tube body 21, while the upward-facing circumferential wall of the first tube body 21 at the corresponding portion is closed. This can block rainwater and reduce the probability of rainwater entering the smoke duct 20 through the second hole group. Furthermore, the multiple smoke exhaust holes 201 of the second hole group also serve as drainage, draining rainwater that enters the smoke duct 20 through the first hole group, preventing rainwater from continuing to flow down the smoke duct 20 into the device body 10 and damaging the device body 10.

[0060] In one embodiment, if Figure 7 As shown, the plurality of smoke exhaust holes 201 in the second hole group include a first smoke exhaust hole 201a and a second smoke exhaust hole 201b. The second smoke exhaust hole 201b is located at the bottom of the first smoke exhaust hole 201a and is configured as a drainage hole 202 extending along the circumference of the first tube body 21. This not only provides the smoke duct 20 with a larger smoke exhaust area, but the strip-shaped second smoke exhaust holes 202 located at the bottom of the first tube body 21 as drainage holes 202 increase the drainage area of ​​the smoke duct 20, thereby enabling more rapid and effective drainage of rainwater from the smoke duct 20. Optionally, the plurality of smoke exhaust holes 201 in the first hole group and the first smoke exhaust hole 201a in the second hole group are circular holes.

[0061] To further improve smoke and water exhaust efficiency, in one embodiment, a plurality of second smoke exhaust holes 201b are spaced apart along the axial direction of the first tube body 21, with a plurality of first smoke exhaust holes 201a spaced apart at both ends of each second smoke exhaust hole 201b. For example, three second smoke exhaust holes 201b are spaced apart along the axial direction of the first tube body 21 to form three water drainage holes 202 at the bottom of the first tube body 21, with two first smoke exhaust holes 201a spaced apart at both ends of each second smoke exhaust hole 201b.

[0062] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A gas water heater, characterized in that: include: The device body has an atomization module, which is used to atomize condensed water generated by the operation of the device body; as well as A smoke pipe is connected to the device body and is used to discharge the smoke generated by the operation of the device body and the condensed water after atomization; the smoke pipe includes a first tube body and a second tube body, the first tube body is arranged at an end of the second tube body away from the device body, the smoke outlet of the device body is connected to the first tube body via the second tube body, and the end of the first tube body close to the second tube body is inserted into the second tube body.

2. The gas water heater according to claim 1, characterized in that: The gas water heater has an installation state for wall installation. In the installation state, the smoke pipe is tilted upward relative to the horizontal plane, the first pipe body is located at the top of the smoke pipe, and the second pipe body is located at the bottom of the smoke pipe.

3. The gas water heater according to claim 1, characterized in that: The second tube body includes a tube body and a sleeve portion provided at one end of the tube body. The inner diameter of the sleeve portion is larger than the inner diameter of the tube body. The end of the first tube body close to the second tube body is inserted into the sleeve portion.

4. The gas water heater according to claim 3, characterized in that: The sleeve portion is interference-fitted with the first tube body; And / or, the second tube body further includes a transition portion connecting the tube body and the sleeve portion, and the inner diameter of the transition portion is gradually reduced from the sleeve portion toward the tube body.

5. The gas water heater according to claim 1, characterized in that: The smoke pipe further includes a bend connecting the device body and the second tube body. The smoke outlet of the device body is connected to the second tube body via the bend, and one end of the second tube body away from the first tube body is inserted into the bend.

6. The gas water heater according to any one of claims 1 to 5, characterized in that: The first tube body has an opening connected to the second tube body. An end cover is provided at one end of the first tube body away from the opening. A plurality of smoke exhaust holes are provided on a peripheral wall of the first tube body close to the end cover.

7. The gas water heater according to claim 6, characterized in that: The plurality of smoke exhaust holes are arranged on the downward side of the peripheral wall of the first tube body. The downward side of the peripheral wall of the first tube body is also provided with a drainage hole, which is located on the side of the plurality of smoke exhaust holes close to the second tube body.

8. The gas water heater according to claim 7, characterized in that: The drainage hole is a strip-shaped hole extending along the circumference of the first tube body.

9. The gas water heater according to claim 6, characterized in that: The multiple smoke exhaust holes include a first hole group and a second hole group arranged along the axial direction of the first tube body, the first hole group is located on the side of the second hole group away from the second tube body, the first hole group and the second hole group include multiple smoke exhaust holes, the multiple smoke exhaust holes of the first hole group are arranged around the peripheral wall of the first tube body, and the multiple smoke exhaust holes of the second hole group are arranged on the downward side of the peripheral wall of the first tube body.

10. The gas water heater according to claim 9, characterized in that: The multiple smoke exhaust holes of the second hole group include a first smoke exhaust hole and a second smoke exhaust hole, the second smoke exhaust hole is located at the bottom of the first smoke exhaust hole, and the second smoke exhaust hole is configured as a drainage hole extending along the circumference of the first tube body. There are multiple second smoke exhaust holes arranged at intervals along the axial direction of the first tube body, and multiple first smoke exhaust holes are respectively provided at both ends of each second smoke exhaust hole.

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