Water tank assembly and gas water heater

Abstract

The application discloses a water tank assembly and a gas water heater, wherein the water tank assembly comprises a tank body and a heat exchanger, the tank body comprises a plurality of side plates which are connected to cooperatively form a flue gas cavity, the heat exchanger is arranged in the flue gas cavity, and the heat exchanger comprises a plurality of heat exchange pipes; at least one of the plurality of side plates comprises a first stamping plate and a second stamping plate, the second stamping plate is connected with the first stamping plate, the first stamping plate is recessed to form a first stamping groove in a direction away from the second stamping plate, and the second stamping plate is recessed to form a second stamping groove in a direction away from the first stamping plate; wherein, after the first stamping plate is connected with the second stamping plate, the first stamping groove and the second stamping groove are communicated to form a first water box, and at least part of the heat exchange pipes are arranged through the first stamping plate to communicate with the first water box. The yield of the side plate product is high, and the manufacturing and production in the workshop are facilitated.

Description

Technical Field

[0001] This application relates to the field of gas water heater technology, and in particular to a water tank assembly and a gas water heater using the water tank assembly. Background Technology

[0002] The high-temperature flue gas produced by the burner of the gas water heater exchanges heat with the heat exchange liquid in the heat exchange tube to heat the heat exchange liquid.

[0003] However, in related technologies, the water box connected to the heat exchange tube is usually stamped from a single sheet. But in the case of large-capacity water output, if the required capacity water box is stamped from a single sheet, the stamping degree is usually too large, which can easily cause the deformation of the sheet during stamping to exceed its plasticity limit, and thus the sheet may crack in the stress concentration area. Utility Model Content

[0004] This application provides a water tank assembly and a gas water heater, which can improve the yield of side panel finished products and facilitate manufacturing and production in the workshop.

[0005] In a first aspect, embodiments of this application provide a water tank assembly suitable for a gas water heater, comprising a tank body and a heat exchanger. The tank body includes multiple side plates connected to each other to form a flue gas chamber. The heat exchanger is disposed within the flue gas chamber and includes multiple heat exchange tubes. At least one of the multiple side plates includes a first stamping plate and a second stamping plate.

[0006] The second stamping plate is connected to the first stamping plate. The first stamping plate is recessed in a direction away from the second stamping plate to form a first stamping groove, and the second stamping plate is recessed in a direction away from the first stamping plate to form a second stamping groove.

[0007] Wherein, after the first stamping plate and the second stamping plate are connected, the first stamping groove and the second stamping groove are connected to form a first water box, and at least part of the heat exchange tubes are inserted through the first stamping plate to communicate with the first water box.

[0008] In some embodiments, the first stamping groove has a first opening facing the second stamping plate, and the second stamping groove has a second opening facing the first stamping groove;

[0009] The surface of the first stamping plate forming the first slot is in sealing contact with the surface of the second stamping plate forming the second slot.

[0010] In some embodiments, the projection is made along the direction from the second stamping plate to the first stamping plate, and the projection of the second stamping groove is located within the first stamping groove.

[0011] In some embodiments, the depth of the second stamping groove is not greater than the depth of the first stamping groove.

[0012] In some embodiments, the plurality of side plates include a first side plate and a second side plate disposed opposite to each other, wherein the first side plate and the second side plate each include a first stamping plate and a second stamping plate;

[0013] At least some of the heat exchange tubes are connected at both ends to the first water box of the first side plate and the first water box of the second side plate, respectively.

[0014] In some embodiments, the housing further has a smoke inlet communicating with the flue gas chamber; the first water box of the first side plate includes a first main heat exchanger box and a first condenser heat exchanger box, and the first water box of the second side plate includes a second main heat exchanger box and a second condenser heat exchanger box; the heat exchange tubes include a plurality of tubes, and the plurality of heat exchange tubes include a first main heat exchanger tube group and a condenser heat exchanger tube group;

[0015] The first main heat exchange tube group includes multiple first main heat exchange tubes, and the two ends of the multiple first main heat exchange tubes are respectively connected to the first main heat exchange water box and the second main heat exchange water box;

[0016] The condenser heat exchanger tube assembly includes multiple condenser heat exchanger tubes, and the two ends of the multiple condenser heat exchanger tubes are respectively connected to the first condenser heat exchanger box and the second condenser heat exchanger box;

[0017] The condenser heat exchanger tube group is located on the side of the first main heat exchanger tube group facing away from the flue gas inlet.

[0018] In some embodiments, both the first main heat exchanger box and the second main heat exchanger box include multiple units, and one first main heat exchanger tube is connected to one first main heat exchanger box and one second main heat exchanger box, so that multiple first main heat exchanger tubes are connected in series to form a series water circuit.

[0019] In some embodiments, both the first condensate heat exchanger box and the second condensate heat exchanger box include multiple boxes;

[0020] At least two of the condensing heat exchange tubes are connected to a first condensing heat exchange box and a second condensing heat exchange box.

[0021] In some embodiments, the first water tank of the second side panel further includes a first cross-layer water tank;

[0022] The first cross-layer water box is connected to one of the first main heat exchange tubes and one of the condenser heat exchange tubes.

[0023] In some embodiments, two water box components are also included, which are respectively connected to the outside of the first side plate and the second side plate, and each has a second water box.

[0024] The first main heat exchange tube group also includes a plurality of second main heat exchange tubes, which are located on the side of the plurality of first main heat exchange tubes facing the flue gas inlet;

[0025] In this configuration, one end of each of the second main heat exchange tubes passes through the first side plate and communicates with the second water box, while the other end passes through the second side plate and communicates with the second water box.

[0026] In some embodiments, the plurality of first main heat exchange tubes and the plurality of second main heat exchange tubes are arranged alternately along the arrangement direction of the plurality of first main heat exchange tubes.

[0027] In some embodiments, the water box component includes a cover plate and a third stamped plate;

[0028] The cover plate is connected to the outside of the first side plate or the second side plate, and the third stamping plate is recessed in a direction away from the cover plate to form a third stamping groove;

[0029] The cover plate is disposed on the third stamping plate, and the plate surface facing the third stamping plate mates with the groove wall surface of the third stamping groove to form the second water box. In some embodiments, for the water box component connected to the first side plate, its second water box includes a third main heat exchange water box and a second cross-layer water box;

[0030] The third main heat exchanger box is connected to one end of the second main heat exchanger tube, and the second cross-layer water box is connected to one end of the first main heat exchanger tube away from the second side plate, and is also connected to one end of the second main heat exchanger tube away from the second side plate.

[0031] In some embodiments, the first water box of the first side plate further includes at least two fourth main hot water boxes, and the first water box of the second side plate further includes a fifth main hot water box;

[0032] The plurality of heat exchange tubes further includes a second main heat exchange tube group, which is located on the side of the first main heat exchange tube group facing the flue gas inlet, and includes a plurality of third main heat exchange tubes, with at least two of the third main heat exchange tubes forming a parallel heat exchange tube group.

[0033] The parallel heat exchange tube assembly includes two sets, with one set having its two ends connected to one of the fourth main heat exchanger boxes and the fifth main heat exchanger box, respectively, and the other set having its two ends connected to the other fourth main heat exchanger box and the fifth main heat exchanger box, respectively; wherein the two sets of parallel heat exchange tube assemblies are spaced apart in the direction from the first side plate to the second side plate, and are respectively arranged adjacent to the first side plate and the second side plate.

[0034] In some embodiments, for the water box component connected to the first side plate, its second water box further includes a third cross-layer water box;

[0035] One of the two sets of parallel heat exchange tube groups is further inserted through a second stamping plate on the first side plate to communicate with the third cross-layer water box, and one end of the second main heat exchange tube away from the second side plate is connected to the third cross-layer water box.

[0036] In some embodiments, the condenser heat exchange tube is a corrugated tube.

[0037] In some embodiments, the heat exchanger further includes heat exchange fins, the heat exchange fins including fin bodies and enclosures;

[0038] The fin body has a thickness direction, and the enclosure is connected to one side surface of the fin body in the thickness direction, and cooperates with the fin body to form a plurality of through ports, with one heat exchange tube corresponding to one through port;

[0039] The enclosure has a material inlet communicating with the through-pipe, and the material inlet is used to allow solder to flow into the gap between the through-pipe and the heat exchange tube.

[0040] In some embodiments, the feed ports include a plurality of ports, and the plurality of feed ports are arranged at intervals along the circumference of the enclosure.

[0041] In some embodiments, the heat exchange fins include a plurality of fins, which are arranged at intervals along the thickness direction. Each of the plurality of heat exchange fins has a discharge port, which is connected to the feed port.

[0042] The discharge ports of the multiple heat exchange fins are aligned along the thickness direction for placing the solder.

[0043] In some embodiments, for the same heat exchange fin, the discharge port and the feed port are located on the same radial direction as the feed port.

[0044] In some embodiments, the heat exchange fins include a plurality of fins, which are arranged at intervals along the thickness direction, and the enclosure of the plurality of heat exchange fins is provided with a limiting portion.

[0045] In this configuration, along the arrangement direction of the plurality of heat exchange fins, the limiting portion of any one of the heat exchange fins is used to limit and block the heat exchange fins adjacent to it.

[0046] In some embodiments, the limiting portion is a limiting flange, which is formed on the edge of the enclosure member away from the fin body along the thickness direction;

[0047] The limiting flange is set at an angle to the enclosure, and in the radial direction of the pipe opening, the limiting flange extends away from the pipe opening.

[0048] Secondly, embodiments of this application provide a gas water heater, which includes a housing, a water tank assembly as described above, and a burner;

[0049] The water tank assembly is located inside the housing, and the burner is located inside the housing and can generate heat exchange flue gas flowing to the flue gas chamber.

[0050] Based on the water tank assembly and gas water heater of this application embodiment, by forming a first stamping groove in a first stamping plate and a second stamping groove in a second stamping plate, and by utilizing the communication between the first stamping groove and the second stamping groove to cooperate in forming a first water box, the water tank assembly of this embodiment has at least the following technical effects:

[0051] Firstly, the first and second stamping grooves can be formed on the first and second stamping plates respectively. This allows for the creation of a larger capacity first water tank, with two stamping grooves formed on two separate plates, which then work together to form the first water tank. This prevents the first water tank from being formed on a single plate, increasing the success rate of side plate production and improving yield. Secondly, obtaining a larger capacity first water tank also increases the overall water output of the water tank assembly, better meeting the requirements of a gas water heater for a larger water output, thereby enhancing the user experience. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0053] Figure 1 This is a schematic diagram of the structure of a water tank assembly according to an embodiment of this application;

[0054] Figure 2 For along Figure 1 Cross-sectional view of section AA in the middle;

[0055] Figure 3 for Figure 2 A magnified view of a section at point B in the middle;

[0056] Figure 4 for Figure 1 Exploded structural diagram of the middle side panel from one perspective;

[0057] Figure 5 for Figure 4 A schematic diagram of the exploded structure of the middle side plate from another perspective;

[0058] Figure 6 for Figure 1 Exploded view of the greywater box components;

[0059] Figure 7 This is a schematic diagram of the structure of a water tank assembly according to an embodiment of this application;

[0060] Figure 8 for Figure 7 Another structural schematic diagram of the intermediate water tank assembly;

[0061] Figure 9 for Figure 7 Cross-sectional view of the CC section in the middle;

[0062] Figure 10 for Figure 7 Schematic diagram of the structure of the heat exchanger;

[0063] Figure 11 for Figure 10 Schematic diagram of the structure of the heat exchange fins;

[0064] Figure 12 for Figure 11 A magnified view of a section at point D;

[0065] Figure 13 for Figure 10 A schematic diagram showing the connection of multiple heat exchange fins;

[0066] Figure 14 for Figure 13 A magnified view of a section at point E in the middle.

[0067] Explanation of icon numbers:

[0068] 1. Water tank assembly;

[0069] 10. Housing; 10A. Flue gas chamber; 10B. Flue gas inlet; 10C. Flue gas outlet; 10D. Water inlet; 10E. Water outlet;

[0070] 11. Side panel; 11A. First water box;

[0071] 111. First side panel; 111A. First main hot water heater box; 111B. First condenser hot water heater box; 111C. Fourth main hot water heater box;

[0072] 112. Second side panel; 112A. Second main hot water heater box; 112B. Second condensate hot water heater box; 112C. First cross-floor water heater box; 112D. Fifth main hot water heater box;

[0073] 113. Heat insulation board;

[0074] 114. First stamping plate; 114A. First stamping groove; 114B. First slot opening;

[0075] 115. Second stamping plate; 115A. Second stamping groove; 115B. Second slot opening;

[0076] 20. Heat exchanger;

[0077] 21. Heat exchange fins; 21A. Through the pipe opening;

[0078] 211, Fin body; 211A, Discharge port;

[0079] 212. Enclosure component; 212A. Material passage; 2121. Limiting part; 2122. Limiting flange;

[0080] 22. Heat exchanger tubes;

[0081] 221. First main heat exchanger tube assembly; 2211. First main heat exchanger tube; 2212. Second main heat exchanger tube

[0082] 222. Condensing heat exchanger tube assembly; 2221. Condensing heat exchanger tube;

[0083] 223. Second main heat exchanger tube group; 2231. Third main heat exchanger tube; 2232. Parallel heat exchanger tube group;

[0084] 30. Water box assembly; 30A. Second water box; 30B. Third main hot water distribution box; 30C. Second cross-floor water box; 30D. Third cross-floor water box

[0085] 31. Cover plate; 32. Third stamping plate; 32A. Third stamping groove.

[0086] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0087] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0088] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0089] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0090] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0091] This application proposes a gas water heater. In the embodiments of this application, the gas water heater can obtain high-temperature flue gas by combustion heating. Then, by exchanging heat between the high-temperature flue gas and cold water, the heat of the high-temperature flue gas can be transferred to the cold water, thereby raising the temperature of the cold water to produce hot water, that is, to produce the required bathroom water.

[0092] Understandably, gas water heaters can mix gas and air, using the resulting mixture as fuel to achieve complete combustion. Specifically, gas and air can be pre-mixed according to a specific combustion ratio to create the desired fuel. This fuel is then ignited to produce high-temperature flue gas. This achieves a more efficient energy conversion and a combustion process with lower emissions, commonly known as fully premixed technology. Of course, the fuel can also be gas alone; this embodiment does not limit this.

[0093] Please see Figure 1In this embodiment, the gas water heater includes a housing (not shown in the figure), a water tank assembly 1, and a burner (not shown in the figure). The housing is used to support and install the various components of the gas water heater. The water tank assembly 1 and the burner are respectively disposed inside the housing. The water tank assembly 1 has a flue gas chamber 10A.

[0094] The fuel is fed into the burner and ignited to produce high-temperature flue gas. The high-temperature flue gas then flows into the flue gas chamber 10A to exchange heat with the water flowing through the water tank assembly 1, thereby raising the water temperature to produce the required hot water.

[0095] The high-temperature flue gas produced by the burner of the gas water heater will exchange heat with the heat exchange liquid in the heat exchange tube 22 to heat the heat exchange liquid.

[0096] However, in related technologies, the water box connected to the heat exchange tube 22 is usually stamped from a single plate. However, in the case of large-capacity water output, if the required capacity water box is stamped from a single plate, the stamping degree is usually too large, which can easily cause the deformation of the plate during stamping to exceed its plasticity limit, and thus the plate may crack in the stress concentration area.

[0097] Please refer to the following: Figures 1-3 Based on this, in some embodiments, the water tank assembly 1 includes a tank body 10 and a heat exchanger 20. The tank body 10 can be made of stainless steel, which has advantages such as better corrosion resistance, better scale resistance, and lower cost. Of course, the tank body 10 can also be made of copper, and this embodiment does not limit this. The tank body 10 can be configured as a cuboid or cube to make the shape more regular, so as to facilitate manufacturing. The tank body 10 has the aforementioned flue gas chamber 10A, and the heat exchanger 20 is disposed in the flue gas chamber 10A.

[0098] The housing 10 includes multiple side plates 11 connected to each other to form a flue gas chamber 10A. At least one of the side plates 11 includes a first stamping plate 114 and a second stamping plate 115 connected to each other; that is, the first stamping plate 114 and the second stamping plate 115 are independent plates, and the first stamping plate 114 is located inside the second stamping plate 115. The first stamping plate 114 is recessed in a direction away from the second stamping plate 115 to form a first stamping groove 114A. The second stamping plate 115 is recessed in a direction away from the second stamping plate 115 to form a second stamping groove 115A.

[0099] Understandably, during the actual forming process of the first stamping groove 114A and the second stamping groove 115A, the press and the die can be used to apply deformation force to the first stamping plate 114 and the second stamping plate 115 respectively, so that the first stamping groove 114A and the second stamping groove 115A are formed correspondingly on the surface of the first stamping plate 114 and the surface of the second stamping plate 115 respectively. In this way, the dimensional and shape accuracy of the first stamping groove 114A and the second stamping groove 115A can be guaranteed, while facilitating the direct forming of the first stamping groove 114A and the second stamping groove 115A, thereby improving production efficiency.

[0100] After the first stamping plate 114 and the second stamping plate 115 are connected, the first stamping groove 114A and the second stamping groove 115A communicate to form a first water box 11A. The first water box 11A has a certain volume to serve a certain water storage function. For example, the first stamping plate 114 and the second stamping plate 115 can be connected by welding, screwing, etc., and after the connection, the first stamping groove 114A can be opposite to the second stamping groove 115A to achieve communication.

[0101] The heat exchanger 20 includes multiple heat exchange tubes 22. The heat exchange tubes 22 can be made of metals such as stainless steel or copper. Taking stainless steel as an example, the heat exchange tubes 22 have advantages such as better corrosion resistance, better scale resistance, and lower cost. Liquid flow channels are formed within the heat exchange tubes 22 to allow the heat exchange liquid to flow. At least some of the heat exchange tubes 22 pass through the first stamping plate 114 to communicate with the first water box 11A. For example, the first stamping plate 114 has a first opening through which the heat exchange tubes 22 pass to achieve this connection.

[0102] It is understandable that when the high-temperature flue gas flows through the heat exchange tube 22, it will come into contact with the heat exchange tube 22 to transfer heat to the heat exchange tube 22, and then the heat exchange tube 22 will exchange heat with the heat exchange liquid to finally transfer the heat to the heat exchange liquid.

[0103] The technical solution of this application forms a first stamping groove 114A in a first stamping plate 114 and a second stamping groove 115A in a second stamping plate 115, and the first stamping groove 114A and the second stamping groove 115A are connected to form a first water tank 11A. Thus, the water tank assembly 1 of this embodiment has at least the following technical effects:

[0104] First, the first stamping groove 114A and the second stamping groove 115A can be formed on the first stamping plate 114 and the second stamping plate 115, respectively. Thus, based on obtaining a larger capacity first water tank 11A, two stamping grooves can be formed from two plates, and the two stamping grooves cooperate to form the first water tank 11A. This prevents the first water tank 11A from being formed on a single plate, increasing the success rate of the side plate 11 and improving the yield rate. Second, obtaining a larger capacity first water tank 11A also increases the overall water output of the water tank assembly 1, better meeting the requirements of a large water output for gas water heaters, thereby improving the user experience.

[0105] Please refer to the following: Figures 3-5 In some embodiments, the first stamping groove 114A has a first notch 114B facing the second stamping plate 115, and the second stamping groove 115A has a second notch 115B facing the first stamping groove 114A. Exemplarily, when projected along the direction from the second stamping plate 115 to the first stamping plate 114, the projection of the second stamping groove 115A is located within the first stamping groove 114A, or a portion of the projection of the second stamping groove 115A is located within the first stamping groove 114A.

[0106] In this design, the surface of the first stamping plate 114 with the first slot 114B is sealed against the surface of the second stamping plate 115 with the second slot 115B. This reduces the likelihood of heat exchange fluid leaking out through the gap between the surfaces of the first stamping plate 114 with the first slot 114B and the second stamping plate 115 with the second slot 115B, preventing leakage and improving the product quality of the water tank assembly 1. Furthermore, the direct sealing between the two eliminates the need for dedicated sealing components, reducing both the number of structural elements and assembly steps.

[0107] Of course, this application is not limited to this. In other embodiments, a sealing element may be provided between the surface of the first stamping plate 114 facing the second stamping plate 115 and the gap between the second stamping plate 115 and the first stamping plate 114.

[0108] Please see Figure 3 Furthermore, the projection of the second stamping plate 115 towards the first stamping plate 114 is such that the projection of the second stamping groove 115A is located within the first stamping groove 114A. This facilitates the alignment of the first stamping groove 114A and the second stamping plate 115 when connecting the first stamping plate 114 and the second stamping plate 115, reducing the difficulty of connection and thus making it easier for the workshop to connect the first stamping plate 114 and the second stamping plate 115.

[0109] Furthermore, compared to the form where part of the projection of the second stamping groove 115A is located within the first stamping groove 114A, in this embodiment, the area opposite to the first stamping groove 114A and the second stamping groove 115A is larger, thereby effectively increasing the capacity of the first water box 11A to meet the requirements of large water output of the gas water heater.

[0110] Please see Figure 3 Optionally, the depth of the second stamping groove 115A is not greater than the depth of the first stamping groove 114A, that is, the depth of the second stamping groove 115A can be equivalent to the depth of the first stamping groove 114A, or it can be less than the depth of the first stamping groove 114A.

[0111] Since the second stamping plate 115 is located outside the first stamping plate 114, if the depth of the second stamping groove 115A is greater than the depth of the first stamping groove 114A, then the groove depth of the second stamping groove 115A will be deeper and it will protrude more outwards. This would result in a larger overall size of the water tank assembly 1, making it unsuitable for smaller gas water heaters. Therefore, by limiting the groove depth of the second stamping groove 115A in this embodiment, the overall size of the water tank assembly 1 can be appropriately reduced, which is beneficial for the water tank assembly 1 to meet the needs of more sized gas water heaters.

[0112] Please refer to the following: Figures 1-2 In some embodiments, the plurality of side plates 11 include a first side plate 111 and a second side plate 112 disposed opposite to each other. Both the first side plate 111 and the second side plate 112 include a first stamping plate 114 and a second stamping plate 115, and therefore both the first side plate 111 and the second side plate 112 have a first water tank 11A.

[0113] At least some of the heat exchange tubes 22 are connected at both ends to the first water box 11A of the first side plate 111 and the first water box 11A of the second side plate 112, respectively. Thus, the first water box 11A of both the first side plate 111 and the second side plate 112 is formed by the cooperation of the first stamping groove 114A and the second stamping groove 115A, thereby increasing the probability of manufacturing the first side plate 111 and the second side plate 112 and helping to improve the yield of the first side plate 111 and the second side plate 112.

[0114] Please see Figure 1 In some structural configurations, the multiple side plates 11 also include two heat insulation plates 113, which are arranged opposite to each other and spaced apart. Each heat insulation plate 113 is connected between the first side plate 111 and the second side plate 112, so that the two heat insulation plates 113, the first side plate 111 and the second side plate 112 cooperate to form at least a portion of the flue gas chamber 10A.

[0115] In this way, by setting up two heat insulation plates 113, the heat of the flue gas can be reduced from escaping outward, thereby effectively improving the heat exchange efficiency.

[0116] Please refer to the following: Figures 6-8 In some embodiments, the housing 10 further includes a smoke inlet 10B and a smoke outlet 10C, both of which are connected to the flue gas chamber 10A. In one example, the smoke inlet 10B and the smoke outlet 10C share the same opening. That is, after the flue gas flows into the flue gas chamber 10A from the smoke inlet 10B, it changes direction and flows back when it reaches the bottom wall of the flue gas chamber 10A, eventually exiting from the smoke outlet 10C. In this case, the smoke inlet 10B and the smoke outlet 10C share the same opening. In another example, the smoke inlet 10B and the smoke outlet 10C are located on opposite sides of the housing 10. In this case, after the flue gas flows into the flue gas chamber 10A from the smoke inlet 10B, it does not change direction and flows out through the smoke outlet 10C. In this case, the smoke inlet 10B and the smoke outlet 10C have different openings.

[0117] The first water box 11A of the first side plate 111 includes a first main hot water box 111A and a first condenser hot water box 111B, and the first water box 11A of the second side plate 112 includes a second main hot water box 112A and a second condenser hot water box 112B.

[0118] The heat exchange tubes 22 include multiple tubes, including a first main heat exchange tube group 221 and a condenser heat exchange tube group 222. The first main heat exchange tube group 221 includes multiple first main heat exchange tubes 2211, with both ends of each tube connected to a first main heat exchange water box 111A and a second main heat exchange water box 112A, respectively. The condenser heat exchange tube group 222 includes multiple condenser heat exchange tubes 2221, with both ends of each tube connected to a first condenser heat exchange water box 111B and a second condenser heat exchange water box 112B, respectively. The multiple first main heat exchange tubes 2211 of the first main heat exchange tube group 221 can be connected in series or in parallel via water circuits, and the multiple condenser heat exchange tubes 2221 of the condenser heat exchange tube group 222 can also be connected in series or in parallel via water circuits; this embodiment does not impose any restrictions on this.

[0119] Understandably, after the flue gas flows into the flue gas chamber 10A from the inlet 10B, it first exchanges heat with the first main heat exchange tube group 221 to heat the heat exchange liquid flowing through the first main heat exchange tube 2211. After the heat exchange is completed, although the temperature of the flue gas has decreased, it still contains a certain amount of heat. Therefore, as the flue gas continues to flow, when it flows through the condenser heat exchange tube group 222, it will further exchange heat with the heat exchange liquid flowing through the condenser heat exchange tube group 2221, transferring the remaining heat in the flue gas (the heat released when the water vapor in the flue gas condenses) to the heat exchange liquid flowing through the condenser heat exchange tube group 222, thereby heating the heat exchange liquid flowing through the condenser heat exchange tube group 222. In this way, most of the heat from the flue gas can be utilized to heat the heat exchange liquid, effectively improving the heat exchange efficiency and achieving energy saving and environmental protection effects.

[0120] In some structural configurations, the condenser heat exchange tube 2221 is a corrugated tube. It is understood that the corrugated tube has a pleated structure on its wall, which increases the heat exchange area between the corrugated tube and the high-temperature flue gas, thereby improving the heat exchange efficiency between the corrugated tube and the high-temperature flue gas. Furthermore, the corrugated tube is lighter in weight and has a lower material cost.

[0121] Please refer to the following: Figures 6-8 Furthermore, both the first main heat exchanger box 111A and the second main heat exchanger box 112A include multiple units, and one first main heat exchanger tube 2211 is connected to one first main heat exchanger box 111A and one second main heat exchanger box 112A, so that multiple first main heat exchanger tubes 2211 are connected in series to form a series water circuit.

[0122] Thus, compared to the parallel water circuit, the series water circuit can avoid the phenomenon of empty tubes or water accumulation in the first main heat exchange tube 2211 due to the small flow rate and slow flow velocity of the heat exchange liquid in some parts of the first main heat exchange tube 2211. This can slow down the vaporization and scaling of water in the first main heat exchange tube 2211, effectively reduce the risk of damage to the first main heat exchange tube 2211, extend the service life of the first main heat exchange tube assembly 221, and at the same time prevent the water tank assembly 1 from exploding, ensuring the safety of the water tank assembly 1.

[0123] Please refer to the following: Figures 6-8 Furthermore, both the first condenser heat exchanger box 111B and the second condenser heat exchanger box 112B comprise multiple units. At least two condenser heat exchanger tubes 2221 are connected to one first condenser heat exchanger box 111B and one second condenser heat exchanger box 112B respectively.

[0124] Thus, compared to the series water circuit, this embodiment can increase the flow rate of the heat exchange liquid by using at least two condenser heat exchange tubes 2221, thereby increasing the water output of the gas water heater.

[0125] Furthermore, since the condenser heat exchanger tube group 222 is located on the side of the first main heat exchanger tube group 221 facing away from the flue gas inlet 10B, the temperature of the flue gas has already decreased after flowing through the first main heat exchanger tube group 221. Therefore, even if there is a phenomenon of low flow rate and slow flow velocity of heat exchange liquid in some condenser heat exchanger tubes 2221, the adverse effects of flue gas on condenser heat exchanger tubes 2221 will be reduced. In this way, the requirement of large water output can be met while reducing the risk of damage to condenser heat exchanger tubes 2221.

[0126] To improve the utilization rate of heat from flue gas, please refer to [the relevant documentation / reference]. Figures 7-8 In some embodiments, the first water box 11A of the second side plate 112 further includes a first cross-layer water box 112C, which is connected to one of the first main heat exchange tubes 2211 and one of the condenser heat exchange tubes 2221.

[0127] In this way, the heat exchange liquid of the condenser heat exchange tube group 222 can flow through the first cross-layer water box 112C to the first main heat exchange tube 2211 of the first main heat exchange tube group 221, thereby improving the utilization rate of heat from the flue gas and thus improving the heating efficiency of the flue gas on the heat exchange liquid.

[0128] Please refer to the following: Figures 6-8 In some embodiments, the water tank assembly 1 further includes two water box components 30, which are respectively connected to the outside of the first side plate 111 and the second side plate 112, and each of them forms a second water box 30A. The second water box 30A has a certain volume so as to play a certain water storage function.

[0129] The first main heat exchange tube group 221 also includes a plurality of second main heat exchange tubes 2212, which are located on the side of the plurality of first main heat exchange tubes 2211 facing the flue gas inlet 10B. One end of each of the plurality of second main heat exchange tubes 2212 passes through the first side plate 111 and communicates with the second water box 30A, while the other end passes through the second side plate 112 and communicates with the second water box 30A. For example, if the second stamping plate 115 has a second through-hole, the second main heat exchange tubes 2212 can sequentially pass through the first through-hole of the first stamping plate 114 and the second through-hole of the second stamping plate 115, and then communicate with the second water box 30A.

[0130] Understandably, since multiple second main heat exchange tubes 2212 are located on the side of multiple first main heat exchange tubes 2211 facing the flue gas inlet 10B, some flue gas will first flow to the second main heat exchange tubes 2212 and then to the first main heat exchange tubes 2211. Therefore, the temperature of the flue gas in contact with the second main heat exchange tubes 2212 is usually higher. If the second main heat exchange tubes 2212 are connected to the first water box 11A, flue gas will flow through the connection between the second main heat exchange tubes 2212 and the first water box 11A. For example, high-temperature flue gas will flow through the weld joint. This will cause the solder at the weld joint between the second main heat exchange tubes 2212 and the first water box 11A to fuse together, thus posing a risk that the second main heat exchange tubes 2212 and the first water box 11A may detach.

[0131] Therefore, by setting a component independent of the side plate 11, namely the water box component 30, and placing the water box component 30 on the outside of the side plate 11, this embodiment can prevent high-temperature flue gas from flowing to the connection between the second main heat exchange tube 2212 and the second water box 30A, effectively reducing the risk of separation between the second main heat exchange tube 2212 and the second water box 30A.

[0132] Please see Figure 8 Furthermore, along the arrangement direction of the multiple first main heat exchange tubes 2211, the multiple first main heat exchange tubes 2211 and the multiple second main heat exchange tubes 2212 are arranged alternately. Specifically, some flue gas can flow relatively close to the gaps between the multiple second main heat exchange tubes 2212 at the flue gas inlet 10B, and then flow directly to the multiple first main heat exchange tubes 2211. In this way, the second main heat exchange tubes 2212 can avoid obstructing the first main heat exchange tubes 2211, allowing the flue gas to flow smoothly to the multiple first main heat exchange tubes 2211, thereby ensuring the uniformity of heat exchange and improving the utilization rate of flue gas. It is worth mentioning that the alternating arrangement, compared to the staggered arrangement, does not cause the size of the housing 10 in the arrangement direction of the multiple first main heat exchange tubes 2211 to be too large, thus appropriately reducing the overall size of the housing 10.

[0133] Of course, in other embodiments, the multiple first main heat exchange tubes 2211 and the multiple second main heat exchange tubes 2212 are arranged alternately along the arrangement direction of the multiple first main heat exchange tubes 2211 in each row, and this embodiment does not limit this.

[0134] Please refer to the following: Figure 9 In some structural configurations, the water box component 30 includes a cover plate 31 and a third stamping plate 32. The cover plate 31 is connected to the outer side of the first side plate 111 or the second side plate 112. The third stamping plate 32 is recessed in a direction away from the cover plate 31 to form a third stamping groove 32A.

[0135] It is understandable that in the actual forming process of the third stamping groove 32A, the press and the die can be used to apply a deformation force to the third stamping plate 32 to form the third stamping groove 32A on the surface of the third stamping plate 32. In this way, the size and shape accuracy of the third stamping groove 32A can be guaranteed, and the third stamping groove 32A can be formed directly.

[0136] The cover plate 31 is placed on the third stamping plate 32, and the surface of the cover plate 31 facing the third stamping plate 32 mates with the groove wall of the third stamping groove 32A to form the second water box 30A. In this way, the surface of the cover plate 31 is relatively regular, which facilitates direct connection with the outer side of the first side plate 111 or the second side plate 112. At the same time, it can also be formed into the second water box 30A with the third stamping groove 32A of the third stamping plate 32, making manufacturing and processing very convenient.

[0137] Please refer to the following: Figures 6-8 In some embodiments, for the water box component 30 connected to the first side plate 111, its second water box 30A includes a third main heat exchange water box 30B and a second cross-layer water box 30C.

[0138] The third main heat exchanger box 30B is connected to one end of the second main heat exchanger tube 2212, and the second cross-layer water box 30C is connected to the end of one of the first main heat exchanger tubes 2211 away from the second side plate 112, and also to the end of one of the second main heat exchanger tubes 2212 away from the second side plate 112. In this way, the heat exchange liquid of the second main heat exchanger tubes 2212 can flow to the first main heat exchanger tube group 221, thereby improving the utilization rate of heat from the flue gas and thus increasing the heating efficiency of the flue gas on the heat exchange liquid.

[0139] It is worth mentioning that the connection between one of the first main heat exchange tubes 2211 and the water box 30 is located on the outside of the first side plate 111, which also avoids the high-temperature flue gas flowing to the connection between the first main heat exchange tube 2211 and the water box 30, effectively reducing the risk of separation between the first main heat exchange tube 2211 and the second water box 30A.

[0140] Please refer to the following: Figures 6-8 In some embodiments, the first water box 11A of the first side plate 111 further includes at least two fourth main hot water boxes 111C, and the first water box 11A of the second side plate 112 further includes a fifth main hot water box 112D.

[0141] The multiple heat exchange tubes 22 also include a second main heat exchange tube group 223, which is located on the side of the first main heat exchange tube group 221 facing the flue gas inlet 10B, and includes multiple third main heat exchange tubes 2231, with at least two third main heat exchange tubes 2231 forming a parallel heat exchange tube group 2232.

[0142] The parallel heat exchanger tube assembly 2232 includes two sets, and the two ends of one set are respectively connected to one of the fourth main heat exchanger boxes 111C and the fifth main heat exchanger box 112D, and the two ends of the other set are respectively connected to another fourth main heat exchanger box 111C and the fifth main heat exchanger box 112D; wherein, the two sets of parallel heat exchanger tube assemblies 2232 are spaced apart in the direction from the first side plate 111 to the second side plate 112, and are respectively arranged adjacent to the first side plate 111 and the second side plate 112.

[0143] Understandably, as the flue gas flows in through the inlet 10B, a portion of the flue gas will flow to the second main heat exchanger tube group 223, and then sequentially to the first main heat exchanger tube group 221 and the condenser heat exchanger tube group 222. The other portion of the flue gas will flow through the gap between the two parallel heat exchanger tube groups 2232 to the first main heat exchanger tube group 221, and then from the first main heat exchanger tube group 221 to the condenser heat exchanger tube group 222.

[0144] Thus, by adding a second main heat exchange tube group 223, the overall heat exchange efficiency between the heat exchanger 20 and the flue gas can be improved. Furthermore, by setting up parallel heat exchange tube groups 2232, the heat exchange liquid flowing through the second main heat exchange tube group 223 can flow back and forth, thereby improving the heat exchange efficiency between the heat exchange liquid flowing through the second main heat exchange tube group 223 and the flue gas.

[0145] Furthermore, the spacing between the two sets of parallel heat exchange tube groups 2232 ensures that the second main heat exchange tube group 223 will not obstruct the flue gas flowing to the first main heat exchange tube group 221 too much, thereby effectively ensuring the overall heat exchange efficiency between the heat exchanger 20 and the flue gas.

[0146] Please refer to the following: Figures 6-8 Furthermore, for the water box component 30 connected to the first side plate 111, its second water box 30A also includes a third cross-layer water box 30D.

[0147] One of the two sets of parallel heat exchange tube groups 2232 is further inserted through the second stamping plate 115 of the first side plate 111 to communicate with the third cross-layer water box 30D, and one end of the second main heat exchange tube 2212 away from the second side plate 112 is connected to the third cross-layer water box 30D. In this way, the heat exchange liquid of the first heat exchange tube group 22 can flow to the second main heat exchange tube group 223 through the third cross-layer water box 30D, thereby improving the utilization rate of heat from the flue gas and thus improving the heating efficiency of the heat exchange liquid by the flue gas.

[0148] Furthermore, the connection points of one of the second main heat exchange tubes 2212 and the third interlayer water box 30D, as well as the connection points of a set of parallel heat exchange tubes 2232 and the third interlayer water box 30D, are all located on the outside of the first side plate 111. Therefore, by ensuring that the high-temperature flue gas does not flow through the connection points, the risk of separation between the parallel heat exchange tube set 2232 and the second water box 30A, as well as the risk of separation between the second main heat exchange tube 2212 and the second water box 30A, is effectively reduced.

[0149] Please refer to the following: Figures 6-8 Furthermore, the housing 10 also has an inlet 10D and an outlet 10E. The inlet 10D is connected to the first condensing heat exchanger box 111B, and the outlet 10E is connected to the third main heat exchanger box. In this way, the heat exchange liquid can flow sequentially through the inlet 10D, the condensing heat exchanger tube group 222, the first main heat exchanger tube group 221, the second main heat exchanger tube group 223, and the outlet 10E, so as to realize the circulation of the heat exchange liquid in multiple heat exchanger tubes 22, thereby improving the heat utilization rate of the flue gas.

[0150] The inlet 10D can also be replaced to connect with the second condenser heat exchanger box 112B. In this way, the inlet 10D and the outlet 10E are located on different sides of the box 10, so as to facilitate the pipeline layout of connecting the inlet 10D and the outlet 10E, and leave enough space for disassembly and assembly.

[0151] Please refer to the following: Figures 10-12 In some embodiments, the heat exchanger 20 further includes heat exchange fins 21, which may be made of copper to have the advantage of better thermal conductivity. Of course, the heat exchange fins 21 may also be made of other metals such as stainless steel, and this embodiment does not limit this.

[0152] The heat exchange fin 21 includes a fin body 211 and a surrounding member 212. The fin body 211 is the main part of the heat exchange fin 21, and it can be roughly rectangular. Therefore, the fin body 211 can have thickness, width and length directions that are perpendicular to each other.

[0153] The enclosure 212 can be arranged in a ring shape to enclose the heat exchange tube 22. Specifically, the enclosure 212 is connected to one side surface of the fin body 211 in the thickness direction and cooperates with the fin body 211 to form multiple through-holes 21A, with one heat exchange tube 22 corresponding to one through-hole 21A. It is understood that solder will fill the gap between the through-hole 21A and the heat exchange tube 22 so that the outer wall of the heat exchange tube 22 can be welded to the wall of the through-hole 21A, thereby realizing the welding of the heat exchange fin 21 and the heat exchange tube 22.

[0154] However, the inventors discovered during the production and manufacturing process that the solder could not fill the gap between the heat exchange tube 22 and the through-hole 21A well. This would reduce the connection area between the heat exchange tube 22 and the through-hole 21A, resulting in both low heat transfer efficiency between the heat exchange tube 22 and the heat exchange fins 21 and poor stability of the connection between the heat exchange tube 22 and the heat exchange fins 21.

[0155] Based on this, in this embodiment, the enclosure 212 has a material passage 212A, which is connected to the pipe passage 21A. The material passage 212A can be a notch on the edge of the enclosure 212 or an opening on the outer side of the enclosure 212; this embodiment does not limit this. The material passage 212A is used to allow solder to flow to the gap between the pipe passage 21A and the heat exchange tube 22. Thus, the solder can first flow to the enclosure 212, and then continue to flow through the material passage 212A of the enclosure 212 to the gap between the pipe passage 21A and the heat exchange tube 22. Then, by high-temperature heating, the solder located in the gap between the pipe passage 21A and the heat exchange tube 22 melts. After subsequent cooling and solidification, the solder can be connected to the wall of the pipe passage 21A and the outer wall of the heat exchange tube 22, thereby achieving the welding of the heat exchange fins 21 and the heat exchange tube 22.

[0156] The technical solution of this embodiment utilizes the cooperation between the fin body 211 and the enclosure 212 to construct the through port 21A, and the enclosure 212 has a material through port 212A, so that the heat exchange fins 21 of this embodiment have at least the following technical effects:

[0157] First, based on the fin body 211, a enclosure 212 connected to the fin body 211 is provided, and the enclosure 212 cooperates with the fin body 211 to form a through-hole 21A, thereby increasing the depth of the through-hole 21A and increasing the connection area between the through-hole wall of the through-hole 21A and the outer wall of the heat exchange tube 22. This not only improves the heat transfer efficiency of the heat exchange tube 22 and the heat exchange fin 21, but also helps to improve the stability of the connection between the heat exchange tube 22 and the heat exchange fin 21.

[0158] Secondly, by providing a feed port 212A on the enclosure 212, the solder can flow through the feed port 212A to the gap between the tube port 21A and the heat exchange tube 22. This allows the solder to fill the gap between the tube port 21A and the heat exchange tube 22 as much as possible, reducing the probability of the gap being partially unfilled with solder. This increases the connection area between the tube port 21A and the outer tube wall of the heat exchange tube 22, thereby improving the heat transfer efficiency of the heat exchange tube 22 and the heat exchange fins 21, and also improving the stability of the connection between the heat exchange tube 22 and the heat exchange fins 21.

[0159] Please refer to the following: Figures 10-12 In some embodiments, there are multiple material passages 212A, such as two, three, or four, etc. This embodiment does not limit this. The multiple material passages 212A are arranged at intervals along the circumference of the enclosure 212.

[0160] In this way, the solder can flow through multiple through ports 212A to the gap between the through port 21A and the heat exchange tube 22, thereby increasing the probability that the solder will fill the gap between the through port 21A and the heat exchange tube 22. This helps to increase the connection area between the through port 21A and the outer wall of the heat exchange tube 22, further improving the heat transfer efficiency of the heat exchange tube 22 and the heat exchange fins 21, and enhancing the stability of the connection between the heat exchange tube 22 and the heat exchange fins 21.

[0161] It is understandable that if there are too many feed ports 212A, such as four or five, the wall area of ​​the feed port 21A constructed by the enclosure 212 will be too small, resulting in insufficient contact area with the heat exchange tube 22. This will result in low heat transfer efficiency between the enclosure 212 and the heat exchange tube 22, and poor connection stability.

[0162] Based on this, please refer to the following: Figures 10-12 Furthermore, there are two feed ports 212A, which are axially symmetrically distributed. In this embodiment, the solder can flow through the two feed ports 212A to the gap between the through port 21A and the heat exchange tube 22. The axially symmetrical distribution of the two feed ports 212A allows the solder to flow as close to each other as possible in the circumferential direction of the through port 21A, so as to fill the gap between the through port 21A and the heat exchange tube 22 as much as possible. On this basis, the number of feed ports 212A is not excessive, thereby preventing the contact area between the through port 21A and the heat exchange tube 22 from being too small due to an excessive number of feed ports 212A. This is beneficial to ensuring the heat transfer efficiency and connection stability between the casing and the heat exchange tube 22.

[0163] Please refer to the following: Figures 11-12 In some embodiments, the feed port 212A is formed on the edge of the enclosure 212 away from the fin body 211 along the thickness direction. This form of feed port 212A, compared to the form of forming it on the edge of the enclosure 212 closer to the fin body 211, facilitates the processing and manufacturing of the heat exchange fins 21, thereby effectively reducing the processing and manufacturing costs.

[0164] Please refer to the following: Figures 11-12In some embodiments, the feed port 212A does not extend to the intersection line of the enclosure 212 and the fin body 211. This arrangement ensures that the enclosure 212 is continuously arranged rather than partially disconnected, thereby achieving a flow interception effect and preventing the solder from flowing directly from the feed port 212A to the area outside the gap instead of flowing to the gap between the feed port 21A and the heat exchange tube 22.

[0165] Please refer to the following: Figures 11-12 In some embodiments, the feed port 212A is an arc-shaped opening formed by a recess in the thickness direction towards the fin body 211. This makes the shape of the feed port 212A more regular, which is convenient for processing. Furthermore, the recessed design of the feed port 212A towards the fin body 211 allows for a larger opening area, i.e., the feed port 212A is flared, thereby increasing the flow rate of solder from the feed port 212A to the gap between the tube port 21A and the heat exchange tube 22, and thus increasing the probability that the solder will fill the gap between the tube port 21A and the heat exchange tube 22.

[0166] Please refer to the following: Figures 11-12 In some embodiments, the feed port 212A does not extend to the intersection line of the enclosure 212 and the fin body 211. This arrangement allows the enclosure 212 to be continuously arranged rather than partially disconnected, thereby achieving a flow interception effect and preventing the solder from flowing directly from the feed port 212A to the area outside the gap instead of flowing to the gap between the feed port 21A and the heat exchange tube 22.

[0167] Furthermore, the feed port 212A is an arc-shaped opening formed by a recess in the thickness direction towards the fin body 211. This makes the shape of the feed port 212A more regular, which is convenient for processing. In addition, the design of the feed port 212A being recessed in the direction towards the fin body 211 allows the opening area of ​​the feed port 212A to be larger, that is, the feed port 212A is flared, which can increase the flow rate of solder from the feed port 212A to the gap between the tube port 21A and the heat exchange tube 22, thereby increasing the probability that the solder will fill the gap between the tube port 21A and the heat exchange tube 22.

[0168] Please refer to the following: Figures 13-14 In some embodiments, the heat exchange fins 21 include multiple heat exchange fins 21 arranged at intervals along the thickness direction, and each heat exchange fin 21 has a discharge port 211A, which is connected to the feed port 212A.

[0169] The discharge ports 211A of the multiple heat exchange fins 21 are aligned along the thickness direction to hold solder. It is understood that the solder is arranged in strips, and with the coordination of the discharge ports 211A of the multiple heat exchange fins 21, the strip-shaped solder can be directly placed on the discharge ports 211A of the multiple heat exchange fins 21, so that it enters the welding furnace along with the heat exchanger 20. Subsequent solder can also flow along the feed port 212A to the gap between the tube port 21A and the heat exchange tube 22.

[0170] Furthermore, for the same heat exchange fin 21, the discharge port 211A and the feed port 212A are located on the same radial direction as the through port 21A. In this way, the solder placed in the discharge port 211A can flow from the discharge port 211A to the feed port 212A with a shorter path, effectively shortening the flow path length of the solder. This effectively reduces the probability that the solder may solidify prematurely due to heat loss in an excessively long flow path, resulting in it not flowing to the gap between the through port and the heat exchange tube 22.

[0171] Please see Figure 13 In some embodiments, the enclosure 212 includes multiple components. It is understood that the fin body 211 cooperates with multiple enclosure components 212 to form multiple through ports 21A. Correspondingly, multiple heat exchange tubes 22 will be inserted through multiple through ports 21A.

[0172] Multiple enclosure components 212 are arranged in at most two rows, that is, multiple enclosure components 212 can be arranged in one row or two rows. The maximum two rows of enclosure components 212 are arranged at intervals along the width direction, and each row includes multiple enclosure components 212 arranged at intervals along the length direction. For example, multiple through ports 21A in one row are used for multiple first main heat exchange tubes 2211 to pass through, and multiple through ports 21A in another row are used for multiple second main heat exchange tubes 2212 to pass through.

[0173] The discharge port 211A includes multiple ports, and each discharge port 211A is correspondingly arranged with a enclosure 212. This arrangement allows multiple heat exchange tubes 22 to pass through a single heat exchange fin 21, thereby improving the overall heat exchange efficiency. Furthermore, the arrangement of multiple discharge ports 211A and multiple enclosures 212 ensures that the solder placed at different discharge ports 211A can flow to the corresponding discharge port 212A, thereby ensuring that the solder can fill the gap between each heat exchange tube 22 and its corresponding discharge port 21A as much as possible.

[0174] Please refer to the following: Figures 13-14 In some embodiments, the heat exchange fins 21 include a plurality of heat exchange fins 21, which are arranged at intervals along the thickness direction, and the enclosure members 212 of the plurality of heat exchange fins 21 are all provided with limiting portions 2121.

[0175] In this configuration, along the arrangement direction of the multiple heat exchange fins 21, the limiting part 2121 of any heat exchange fin 21 is used to limit and block the heat exchange fin 21 adjacent to it.

[0176] In this way, based on the limiting and blocking, it can be ensured that the fin bodies 211 of multiple heat exchange fins 21 are distributed with the same spacing as much as possible, so that the heat exchange tubes 22 passing through multiple heat exchange fins 21 have the same heat exchange efficiency with high temperature flue gas in each area in the arrangement direction of multiple heat exchange fins 21, thereby improving the uniformity of heat exchange effect.

[0177] Please see Figure 12 Furthermore, the limiting part 2121 is a limiting flange 2122, which is formed on the edge of the enclosure 212 away from the fin body 211 along the thickness direction. It can be understood that the limiting flange 2122 can be formed by stamping and folding a part of the enclosure 212 itself, thereby reducing the assembly steps between the limiting flange 2122 and the enclosure 212. On the basis that the limiting flange 2122 and the enclosure 212 are integral components, the strength of the connection between the limiting flange 2122 and the enclosure 212 can be effectively guaranteed.

[0178] The limiting flange 2122 is set at an angle to the enclosing member 212, for example, at a 90-degree angle, in which case the limiting flange 2122 and the enclosing member 212 are perpendicular. In the radial direction of the through-hole 21A, the limiting flange 2122 extends away from the through-hole 21A to avoid interfering with the passage of the heat exchange tube 22. Thus, the limiting flange 2122 blocks the heat exchange fins 21, ensuring that the fin bodies 211 of multiple heat exchange fins 21 are distributed at the same spacing. Furthermore, the limiting flange 2122 has a simple structure, facilitating manufacturing and production.

[0179] Please see Figure 12 Optionally, a plurality of spaced-apart limiting portions 2121 are provided on the same enclosure 212, for example, a plurality of spaced-apart limiting flanges 2122 are provided along the circumference of the enclosure 212. In this embodiment, by providing a plurality of limiting portions 2121, adjacent heat exchange fins 21 can be limited and blocked in the circumference of the enclosure 212, so as to further ensure that the fin bodies 211 of the plurality of heat exchange fins 21 can be distributed at the same spacing.

[0180] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0181] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A water tank assembly, characterized in that, A gas water heater, comprising a housing and a heat exchanger, wherein the housing includes multiple side plates connected to each other to form a flue gas chamber, the heat exchanger is disposed within the flue gas chamber, and the heat exchanger includes multiple heat exchange tubes; at least one of the multiple side plates includes: First stamping plate; and The second stamping plate is connected to the first stamping plate. The first stamping plate is recessed in a direction away from the second stamping plate to form a first stamping groove, and the second stamping plate is recessed in a direction away from the first stamping plate to form a second stamping groove. Wherein, after the first stamping plate and the second stamping plate are connected, the first stamping groove and the second stamping groove are connected to form a first water box, and at least part of the heat exchange tubes are inserted through the first stamping plate to communicate with the first water box.

2. The water tank assembly as described in claim 1, characterized in that, The first stamping groove has a first opening facing the second stamping plate, and the second stamping groove has a second opening facing the first stamping groove; The surface of the first stamping plate forming the first slot is in sealing contact with the surface of the second stamping plate forming the second slot.

3. The water tank assembly as described in claim 2, characterized in that, Projecting along the direction from the second stamping plate to the first stamping plate, the projection of the second stamping groove is located within the first stamping groove.

4. The water tank assembly as described in claim 2, characterized in that, The depth of the second stamping groove is not greater than the depth of the first stamping groove.

5. The water tank assembly as described in any one of claims 1-4, characterized in that, The plurality of side plates include a first side plate and a second side plate arranged opposite to each other, wherein the first side plate and the second side plate each include a first stamping plate and a second stamping plate; At least some of the heat exchange tubes are connected at both ends to the first water box of the first side plate and the first water box of the second side plate, respectively.

6. The water tank assembly as described in claim 5, characterized in that, The housing also has a flue gas inlet communicating with the flue gas chamber; the first water box of the first side plate includes a first main heat exchanger box and a first condenser heat exchanger box, and the first water box of the second side plate includes a second main heat exchanger box and a second condenser heat exchanger box; the heat exchange tubes include a plurality of tubes, and the plurality of heat exchange tubes include: The first main heat exchange tube assembly includes multiple first main heat exchange tubes, with both ends of the multiple first main heat exchange tubes connected to the first main heat exchange water box and the second main heat exchange water box, respectively; and A condenser heat exchanger tube assembly includes multiple condenser heat exchanger tubes, with both ends of the multiple condenser heat exchanger tubes respectively connected to the first condenser heat exchanger box and the second condenser heat exchanger box; The condenser heat exchanger tube group is located on the side of the first main heat exchanger tube group facing away from the flue gas inlet.

7. The water tank assembly as described in claim 6, characterized in that, Both the first main heat exchanger box and the second main heat exchanger box include multiple units, and one first main heat exchanger tube is connected to one first main heat exchanger box and one second main heat exchanger box, so that multiple first main heat exchanger tubes are connected in series to form a series water circuit.

8. The water tank assembly as described in claim 7, characterized in that, Both the first condensate heat exchanger box and the second condensate heat exchanger box include multiple boxes; At least two of the condensing heat exchange tubes are connected to a first condensing heat exchange box and a second condensing heat exchange box.

9. The water tank assembly as described in claim 8, characterized in that, The first water tank of the second side panel also includes: The first cross-layer water box is connected to one of the first main heat exchange tubes and one of the condenser heat exchange tubes.

10. The water tank assembly as claimed in claim 6, characterized in that, It also includes two water box components, which are respectively connected to the outside of the first side plate and the second side plate, and each of them forms a second water box; The first main heat exchange tube group also includes a plurality of second main heat exchange tubes, which are located on the side of the plurality of first main heat exchange tubes facing the flue gas inlet; In this configuration, one end of each of the second main heat exchange tubes passes through the first side plate and communicates with the second water box, while the other end passes through the second side plate and communicates with the second water box.

11. The water tank assembly as claimed in claim 10, characterized in that, Along the arrangement direction of the plurality of first main heat exchange tubes, the plurality of first main heat exchange tubes and the plurality of second main heat exchange tubes are arranged alternately.

12. The water tank assembly as claimed in claim 10, characterized in that, The water tank component includes: A cover plate, connected to the outer side of either the first or second side plate; and The third stamping plate has a third stamping groove recessed in a direction away from the cover plate; The cover plate is placed on the third stamping plate, and the plate surface facing the third stamping plate cooperates with the groove wall surface of the third stamping groove to form the second water box.

13. The water tank assembly as claimed in claim 10, characterized in that, For the water tank component connected to the first side plate, its second water tank includes: The third main heat exchanger box is connected to one end of the second main heat exchanger tube; and The second cross-layer water box is connected to one end of the first main heat exchange tube away from the second side plate, and is also connected to one end of the second main heat exchange tube away from the second side plate.

14. The water tank assembly as claimed in claim 13, characterized in that, The first water box on the first side panel also includes at least two fourth main hot water boxes, and the first water box on the second side panel also includes a fifth main hot water box; The plurality of heat exchange tubes further includes a second main heat exchange tube group, which is located on the side of the first main heat exchange tube group facing the flue gas inlet, and includes a plurality of third main heat exchange tubes, with at least two of the third main heat exchange tubes forming a parallel heat exchange tube group. The parallel heat exchange tube assembly includes two sets, with one set having its two ends connected to one of the fourth main heat exchanger boxes and the fifth main heat exchanger box, respectively, and the other set having its two ends connected to the other fourth main heat exchanger box and the fifth main heat exchanger box, respectively; wherein the two sets of parallel heat exchange tube assemblies are spaced apart in the direction from the first side plate to the second side plate, and are respectively arranged adjacent to the first side plate and the second side plate.

15. The water tank assembly as claimed in claim 14, characterized in that, For the water box component connected to the first side plate, its second water box also includes a third cross-layer water box; One of the two sets of parallel heat exchange tube groups is further inserted through a second stamping plate on the first side plate to communicate with the third cross-layer water box, and one end of the second main heat exchange tube away from the second side plate is connected to the third cross-layer water box.

16. The water tank assembly as claimed in claim 6, characterized in that, The condenser heat exchange tube is a corrugated tube.

17. The water tank assembly as claimed in claim 6, characterized in that, The heat exchanger further includes heat exchange fins, the heat exchange fins comprising: The fin body has a thickness direction; and The enclosure is connected to one side surface of the fin body in the thickness direction and cooperates with the fin body to form multiple through ports, with one heat exchange tube corresponding to one through port; The enclosure has a material inlet communicating with the through-pipe, and the material inlet is used to allow solder to flow into the gap between the through-pipe and the heat exchange tube.

18. The water tank assembly as claimed in claim 17, characterized in that, The material passage includes multiple passages, and the multiple material passages are arranged at intervals along the circumference of the enclosure.

19. The water tank assembly as claimed in claim 17, characterized in that, The heat exchange fins include a plurality of fins, which are arranged at intervals along the thickness direction. Each heat exchange fin has a discharge port, which is connected to the feed port. The discharge ports of the multiple heat exchange fins are aligned along the thickness direction for placing the solder.

20. The water tank assembly as claimed in claim 19, characterized in that, For the same heat exchange fin, the discharge port and the feed port are located on the same radial direction of the feed pipe opening.

21. The water tank assembly as claimed in claim 17, characterized in that, The heat exchange fins include a plurality of fins, which are arranged at intervals along the thickness direction, and the enclosure of the plurality of heat exchange fins is provided with a limiting part. In this configuration, along the arrangement direction of the plurality of heat exchange fins, the limiting portion of any one of the heat exchange fins is used to limit and block the heat exchange fins adjacent to it.

22. The water tank assembly as claimed in claim 21, characterized in that, The limiting part is a limiting flange, which is formed on the edge of the enclosure member away from the fin body along the thickness direction; The limiting flange is set at an angle to the enclosure, and in the radial direction of the pipe opening, the limiting flange extends away from the pipe opening.

23. A gas water heater, characterized in that, include: case; The water tank assembly as described in any one of claims 1-22 is disposed within the housing; as well as A burner is disposed within the housing and is capable of generating heat-exchange flue gas flowing into the flue gas chamber.

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