Water tank assembly and gas water heater

Abstract

The invention discloses a water tank assembly and a gas water heater, the water tank assembly comprises a tank body and a heat exchanger, the tank body comprises a plurality of side plates, the plurality of side plates 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 tubes; at least one of the 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 sunken in the direction away from the second stamping plate to form a first stamping groove, and the second stamping plate is sunken in the direction away from the first stamping plate to form a second stamping groove; after the first stamping plate is connected with the second stamping plate, the first stamping groove communicates with the second stamping groove to form a first water box, and at least part of the heat exchange pipe penetrates through the first stamping plate to communicate with the first water box. According to the technical scheme, the yield of side plate finished products is high, and manufacturing and production in a workshop are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas water heaters, in particular to a water tank assembly and a gas water heater applying the same. BACKGROUND

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

[0003] However, in the related art, the water box communicated with the heat exchange pipe is usually formed by stamping a single plate, but in the case of large-capacity water output, if the water box with the required capacity is stamped on a single plate, the stamping degree is usually too large, which can easily cause the deformation of the plate to exceed the limit of its shaping during stamping, and thus the plate can be broken in the stress concentration area. SUMMARY

[0004] The embodiments of the present application provide a water tank assembly and a gas water heater, which can improve the yield of side plates, and facilitate the manufacturing and production in the workshop.

[0005] In a first aspect, the embodiments of the present application provide a water tank assembly, which is suitable for a gas water heater and includes a tank body and a heat exchanger. The tank body includes a plurality of side plates connected to cooperatively form a flue gas chamber. The heat exchanger is arranged in the flue gas chamber and includes a plurality of heat exchange pipes. At least one of the plurality of side plates includes a first stamped plate and a second stamped plate.

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

[0007] After the first stamped plate is connected to the second stamped plate, the first stamped groove and the second stamped groove are communicated to form a first water box. At least part of the heat exchange pipes are arranged in the first stamped plate to communicate with the first water box.

[0008] In some embodiments, the first stamped groove has a first slot opening towards the second stamped plate, and the second stamped groove has a second slot opening towards the first stamped groove.

[0009] The plate surface of the first stamped plate forming the first slot opening is sealed and abuts against the plate surface of the second stamped plate forming the second slot opening.

[0010] In some embodiments, a projection of the second stamping groove in a direction pointing from the second stamping plate to the first stamping plate is located within the first stamping groove.

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

[0012] In some embodiments, the plurality of side plates comprises first and second side plates arranged oppositely, and the first and second side plates each comprises the first and second stamping plates.

[0013] At least two ends of the heat exchange pipes are in communication with 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 cabinet further comprises a smoke inlet in communication with the flue gas cavity; the first water box of the first side plate comprises a first main heat exchange water box and a first condensation heat exchange water box, the first water box of the second side plate comprises a second main heat exchange water box and a second condensation heat exchange water box; the heat exchange pipes comprise a plurality of heat exchange pipes, and the plurality of heat exchange pipes comprise a first main heat exchange pipe group and a condensation heat exchange pipe group.

[0015] The first main heat exchange pipe group comprises a plurality of first main heat exchange pipes, and two ends of the plurality of first main heat exchange pipes are in communication with the first main heat exchange water box and the second main heat exchange water box respectively.

[0016] The condensation heat exchange pipe group comprises a plurality of condensation heat exchange pipes, and two ends of the plurality of condensation heat exchange pipes are in communication with the first condensation heat exchange water box and the second condensation heat exchange water box respectively.

[0017] The condensation heat exchange pipe group is located on a side of the first main heat exchange pipe group opposite to the smoke inlet.

[0018] In some embodiments, the first main heat exchange water box and the second main heat exchange water box each comprise a plurality of first main heat exchange water boxes, and one first main heat exchange pipe is in communication with one first main heat exchange water box and one second main heat exchange water box, so that the plurality of first main heat exchange pipes are connected in series to form a series water circuit.

[0019] In some embodiments, the first condensation heat exchange water box and the second condensation heat exchange water box each comprise a plurality of first condensation heat exchange water boxes.

[0020] At least two condensation heat exchange pipes are in communication with one first condensation heat exchange water box and one second condensation heat exchange water box.

[0021] In some embodiments, the first water box of the second side plate further comprises a first cross-layer water box.

[0022] The first cross-layer water box is in communication with one of the first main heat exchange pipes and one of the condensation heat exchange pipes.

[0023] In some embodiments, two water box pieces are further included, and the two water box pieces are respectively connected to the outer sides of the first side plate and the second side plate and each forms a second water box.

[0024] The first main heat exchange pipe group further includes a plurality of second main heat exchange pipes, and the plurality of second main heat exchange pipes are located on the side of the plurality of first main heat exchange pipes facing the smoke inlet.

[0025] One end of the plurality of second main heat exchange pipes is provided through the first side plate and in communication with the second water box, and the other end is provided through the second side plate and in communication with the second water box.

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

[0027] In some embodiments, the water box piece includes a cover plate and a third stamping plate.

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

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

[0030] The third main heat exchange water box is in communication with one end of the second main heat exchange pipe, the second cross-layer water box is in communication with one end of one of the first main heat exchange pipes away from the second side plate and one end of one of the second main heat exchange pipes 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 heat exchange water boxes, and the first water box of the second side plate further includes a fifth main heat exchange water box.

[0032] The plurality of heat exchange pipes further include a second main heat exchange pipe group, the second main heat exchange pipe group is located on the side of the first main heat exchange pipe group facing the smoke inlet, and includes a plurality of third main heat exchange pipes, and at least two of the third main heat exchange pipes form a parallel heat exchange pipe group.

[0033] The parallel heat exchange pipe groups include two groups, and two ends of one group are respectively communicated with one of the fourth main heat exchange water boxes and the fifth main heat exchange water box, and two ends of the other group are respectively communicated with the other fourth main heat exchange water box and the fifth main heat exchange water box; wherein, the two groups of parallel heat exchange pipe groups are spaced apart from each other by 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, the second water box further comprises a third cross-layer water box for the water box member connected to the first side plate;

[0035] One of the two groups of parallel heat exchange pipe groups is further provided through the second stamping plate of the first side wall to communicate with the third cross-layer water box, and one end of the second main heat exchange pipe away from the second side plate is communicated with the third cross-layer water box.

[0036] In some embodiments, the condensation heat exchange pipe is a corrugated pipe.

[0037] In some embodiments, the heat exchanger further comprises a heat exchange fin, the heat exchange fin comprising a fin body and an enclosing member;

[0038] The fin body has a thickness direction, the enclosing member 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 pipe passing openings, and one heat exchange pipe is arranged through one pipe passing opening;

[0039] The enclosing member has a material passing opening communicated with the pipe passing opening, and the material passing opening is used for flowing the solder to the gap between the pipe passing opening and the heat exchange pipe.

[0040] In some embodiments, the material passing opening includes a plurality of material passing openings, and the plurality of material passing openings are arranged in a circumferential direction of the enclosing member.

[0041] In some embodiments, the heat exchange fin includes a plurality of heat exchange fins, the plurality of heat exchange fins are arranged in the thickness direction, and a material discharging opening is formed in each of the plurality of heat exchange fins, and the material discharging opening is communicated with the material passing opening.

[0042] The material discharging openings of the plurality of heat exchange fins are arranged in alignment in the thickness direction, so as to place the solder.

[0043] In some embodiments, for the same heat exchange fin, the material discharging opening and the material passing opening are located in the same radial direction of the pipe passing opening.

[0044] In some embodiments, the heat exchange fins include a plurality of heat exchange fins, the plurality of heat exchange fins are arranged and disposed along the thickness direction, and the enclosing member of the plurality of heat exchange fins is provided with a limiting portion.

[0045] In 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 resist the heat exchange fin adjacent thereto.

[0046] In some embodiments, the limiting portion is a limiting flange, and the limiting flange is formed at the edge of the enclosing member away from the fin body along the thickness direction.

[0047] In the radial direction of the pipe passing opening, the limiting flange is arranged and disposed in a direction away from the pipe passing opening.

[0048] In a second aspect, the embodiments of the present application provide a gas water heater, which includes a shell, a water tank assembly as described above, and a burner.

[0049] The water tank assembly is arranged in the shell, and the burner is arranged in the shell and can generate heat exchange flue gas flowing to the flue gas cavity.

[0050] Based on the water tank assembly and the gas water heater of the embodiments of the present application, the first stamping groove is formed on the first stamping plate, the second stamping groove is formed on the second stamping plate, and the first stamping groove and the second stamping groove are communicated to cooperatively form the first water box, so that the water tank assembly of the embodiments has at least the following technical effects:

[0051] Firstly, the first stamping groove and the second stamping groove can be correspondingly formed on the first stamping plate and the second stamping plate, respectively, so that on the basis of obtaining the first water box with a larger capacity, two stamping grooves can be formed on two plate members, respectively, and the first water box is formed by the cooperation of the two stamping grooves, which prevents the first water box from being formed on a single plate member, the probability of manufacturing the side plate is higher, and the yield is improved. Secondly, the first water box with a larger capacity can also improve the water output of the water tank assembly as a whole, so as to better meet the requirement of the gas water heater for a larger water output, thereby improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0052] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0053] Figure 1 Structure diagram of water tank assembly according to an embodiment of the application;

[0054] Figure 2 Sectional view along Figure 1 A-A section;

[0055] Figure 3 Detail view at Figure 2 B;

[0056] Figure 4 Detail view at Figure 1 side plate;

[0057] Figure 5 Detail view at Figure 4 side plate;

[0058] Figure 6 Detail view at Figure 1 water box;

[0059] Figure 7 Structure diagram of water tank assembly according to an embodiment of the application;

[0060] Figure 8 Structure diagram of water tank assembly according to an embodiment of the application; Figure 7 another view;

[0061] Figure 9 Sectional view along Figure 7 C-C section;

[0062] Figure 10 Structure diagram of heat exchanger; Figure 7

[0063] Structure diagram of heat exchanger fin; Figure 11 Figure 10 Detail view at

[0064] D; Figure 12 Figure 11 Detail view at

[0065] multiple heat exchanger fins; Figure 13 Figure 10 Detail view at

[0066] E. Figure 14 Figure 13 Explanation of reference signs:

[0067]

[0068] ​​1, water tank assembly; 10, tank body; 10A, flue gas cavity; 10B, flue gas inlet; 10C, flue gas outlet; 10D, water inlet; 10E, water outlet; 11, side plate; 11A, first water box; 111, first side plate; 111A, first main heat exchange water box; 111B, first condensation heat exchange water box; 111C, fourth main heat exchange water box; 112, second side plate; 112A, second main heat exchange water box; 112B, second condensation heat exchange water box; 112C, first cross-layer water box; 112D, fifth main heat exchange water box; 113, heat insulation plate; 114, first punching plate; 114A, first punching groove; 114B, first slot; 115, second punching plate; 115A, second punching groove; 115B, second slot; 20, heat exchanger; 21, heat exchange fin; 21A, through pipe opening; 211, fin body; 211A, discharge opening; 212, enclosing member; 212A, through opening; 2121, limiting portion; 2122, limiting flange; 22, heat exchange pipe; 221, first main heat exchange pipe group; 2211, first main heat exchange pipe; 2212, second main heat exchange pipe; 222, condensation heat exchange pipe group; 2221, condensation heat exchange pipe; 223, second main heat exchange pipe group; 2231, third main heat exchange pipe; 2232, parallel heat exchange pipe group; 30, water box member; 30A, second water box; 30B, third main heat exchange water box; 30C, second cross-layer water box; 30D, third cross-layer water box; 31, cover plate; 32, third punching plate; 32A, third punching groove.

[0069] The purposes, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0070] In order to make the purposes, technical solutions and advantages of the present application clearer, the following will further describe the embodiments of the present application with reference to the accompanying drawings.

[0071] The following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0072] In the description of the present application, it is understood that the terms "first", "second" and the like are used for descriptive purposes only, and are not to be construed as indicating or implying relative importance. The above terms can be understood in their specific meanings in the present application by the person of ordinary skill in the art. In addition, in the description of the present application, "a plurality of" means two or more, unless otherwise specified. The association relationship of the associated objects is described, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0073] 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 in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more associated items.

[0074] The present application provides a gas water heater. In the embodiments of the present application, the gas water heater can heat by burning to obtain high-temperature flue gas with high temperature, and then heat exchange between the high-temperature flue gas and cold water, so that the heat of the high-temperature flue gas can be transferred to the cold water, and then the cold water is heated to prepare hot water, that is, to prepare the required bath water.

[0075] It can be understood that the gas water heater can mix gas and air, and use the mixed gas as fuel to achieve full combustion of the fuel. Specifically, the gas and air can be mixed in a specific combustion ratio in advance to become the required fuel, and then the fuel is ignited to generate high-temperature flue gas. In this way, a more efficient energy conversion and lower flue gas emission combustion process can be achieved, that is, the so-called full premixing technology. Of course, the fuel can also be only gas, which is not limited in the embodiments.

[0076] Please refer to Figure 1 In the embodiments, the gas water heater includes a shell (not shown in the figure), a water tank assembly 1 and a burner (not shown in the figure). The shell is used to carry and install various components of the gas water heater. The water tank assembly 1 and the burner are respectively arranged in the shell, and the water tank assembly 1 has a flue gas cavity 10A.

[0077] Among them, the fuel can be sent into the burner and ignited by the burner to obtain high-temperature flue gas. Then the high-temperature flue gas flows into the flue gas cavity 10A to exchange heat with the water flowing through the water tank assembly 1, so that the water is heated to prepare the required hot water.

[0078] The high-temperature flue gas generated by the burner of the gas water heater exchanges heat with the heat exchange liquid in the heat exchange tube 22 to heat the heat exchange liquid.

[0079] However, in the related art, the water box communicated with the heat exchange tube 22 is usually formed by stamping a single plate, but in the case of large water output, if the water box with the required capacity is stamped on a single plate, the stamping degree is usually too large, which easily causes the deformation of the plate to exceed the limit of its shaping, and thus the plate may be broken in the stress concentration area.

[0080] Please refer to Figures 1-3 Therefore, 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 to have better corrosion resistance, better anti-fouling property, and lower cost, etc. Of course, the tank body 10 can also be made of copper, and the present embodiment does not limit this. The tank body 10 can be configured in a cuboid or a cube shape to have a regular shape for easy manufacturing. The tank body 10 has the flue gas chamber 10A described above, and the heat exchanger 20 is arranged in the flue gas chamber 10A.

[0081] The tank body 10 includes a plurality of side plates 11 connected to cooperatively form the flue gas chamber 10A. At least one of the plurality of side plates 11 includes a first stamping plate 114 and a second stamping plate 115 connected to each other, i.e., 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 to form a first stamping groove 114A in a direction away from the second stamping plate 115. The second stamping plate 115 is recessed to form a second stamping groove 115A in a direction away from the second stamping plate 115.

[0082] It can be understood that in the actual forming process of the first stamping groove 114A and the second stamping groove 115A, a press machine and a die can be used to apply deformation force to the first stamping plate 114 and the second stamping plate 115, respectively, to form the first stamping groove 114A and the second stamping groove 115A on the surfaces of the first stamping plate 114 and the second stamping plate 115, respectively. In this way, the size and shape accuracy of the first stamping groove 114A and the second stamping groove 115A can be ensured, and the first stamping groove 114A and the second stamping groove 115A can be directly formed, improving production efficiency.

[0083] 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 are communicated to form the first water box 11A, and the first water box 11A has a certain volume to play a certain water storage function. For example, the first stamping plate 114 and the second stamping plate 115 can be connected by welding, screwing or the like, and after being connected, the first stamping groove 114A can be opposite to the second stamping groove 115A to realize communication.

[0084] The heat exchanger 20 includes a plurality of heat exchange pipes 22. The heat exchange pipes 22 can be stainless steel or copper or the like metal material. Taking the stainless steel material as an example, the heat exchange pipes 22 have the advantages of better corrosion resistance, better anti-fouling property and lower cost. The heat exchange pipes 22 form a liquid flow channel inside to flow the heat exchange liquid. At least part of the heat exchange pipes 22 are arranged in the first stamping plate 114 to communicate with the first water box 11A, for example, the first stamping plate 114 is provided with a first through hole, and the heat exchange pipes 22 are arranged in the first through hole to realize the arrangement in the first stamping plate 114.

[0085] It can be understood that when the high-temperature flue gas flows through the heat exchange pipes 22, it will contact the heat exchange pipes 22 to transfer heat to the heat exchange pipes 22, and then the heat exchange pipes 22 exchange heat with the heat exchange liquid to finally transfer heat to the heat exchange liquid.

[0086] The technical scheme of the present application forms the first stamping groove 114A on the first stamping plate 114 and the second stamping groove 115A on the second stamping plate 115, and communicates the first stamping groove 114A and the second stamping groove 115A to form the first water box 11A in cooperation, so that the water tank assembly 1 of the embodiment has at least the following technical effects:

[0087] Firstly, the first stamping groove 114A and the second stamping groove 115A can be respectively formed on the first stamping plate 114 and the second stamping plate 115, so that on the basis of obtaining the first water box 11A with a larger capacity, two stamping grooves can be respectively formed by two plate pieces, and the first water box 11A is formed by the cooperation of the two stamping grooves, which prevents the first water box 11A from being formed on a single plate piece, and the probability of manufacturing the side plate 11 is higher, which helps to improve the yield rate. Secondly, the first water box 11A with a larger capacity can also improve the overall water output of the water tank assembly 1 to better meet the requirement of large water output of the gas water heater, thereby improving the user experience.

[0088] Please refer to Figures 3-5In some embodiments, the first punching groove 114A has a first slot 114B arranged towards the second punching plate 115, and the second punching groove 115A has a second slot 115B arranged towards the first punching plate 114. Exemplarily, the second punching groove 115A is projected in a direction pointing from the second punching plate 115 to the first punching plate 114, and the projection of the second punching groove 115A is located within the first punching groove 114A, or part of the projection of the second punching groove 115A is located within the first punching groove 114A.

[0089] In some embodiments, the first punching plate 114 is arranged to seal against the plate surface of the second punching plate 115, which is arranged to form the second slot 115B. In this way, the probability of the heat exchange liquid flowing out from the gap between the plate surface of the first punching plate 114, which is arranged to form the first slot 114B, and the plate surface of the second punching plate 115, which is arranged to form the second slot 115B, can be reduced, and the problem of water leakage can be avoided, thereby improving the product quality of the water tank assembly 1. Moreover, the sealing member is not needed to be specially arranged for sealing, and the number of structures and the assembly steps can be reduced.

[0090] Of course, the present application is not limited thereto, and in other embodiments, a sealing member can be arranged between the plate surface of the first punching plate 114, which is arranged to face the second punching plate 115, and the gap between the plate surface of the second punching plate 115, which is arranged to face the first punching plate 114.

[0091] Referring to Figure 3 In some embodiments, the second punching groove 115A is projected in a direction pointing from the second punching plate 115 to the first punching plate 114, and the projection of the second punching groove 115A is located within the first punching groove 114A. In this way, when the first punching plate 114 and the second punching plate 115 are connected, the alignment of the first punching groove 114A and the second punching groove 115A can be facilitated, and the connection difficulty can be reduced, thereby facilitating the connection of the first punching plate 114 and the second punching plate 115 in the workshop.

[0092] Moreover, compared with the form in which part of the projection of the second punching groove 115A is located within the first punching groove 114A, in the form of the present embodiment, the area of the first punching groove 114A and the second punching groove 115A facing each other is larger, thereby effectively increasing the capacity of the first water box 11A to meet the requirement of large water output of the gas water heater.

[0093] Referring to Figure 3 Optionally, the depth of the second punching groove 115A is not greater than the depth of the first punching groove 114A, that is, the depth of the second punching groove 115A can be comparable to the depth of the first punching groove 114A, or can be smaller than the depth of the first punching groove 114A.

[0094] Since the position of the second punching plate 115 is located outside the first punching plate 114, if the depth of the second punching groove 115A is greater than the depth of the first punching groove 114A, the groove depth of the second punching groove 115A is deeper and will be more outwardly protruding, which will cause the overall size of the water tank assembly 1 to be larger and cannot be adapted to smaller gas water heaters. Therefore, by limiting the groove depth of the second punching groove 115A, the overall size of the water tank assembly 1 can be appropriately reduced, which is beneficial to meet the needs of more sizes of gas water heaters.

[0095] Please refer to Figures 1-2 In some embodiments, the plurality of side plates 11 includes a first side plate 111 and a second side plate 112 arranged oppositely. The first side plate 111 and the second side plate 112 each include a first punching plate 114 and a second punching plate 115, so that the first side plate 111 and the second side plate 112 each have a first water box 11A.

[0096] At least part of the two ends of the heat exchange pipe 22 respectively communicate with the first water box 11A of the first side plate 111 and the first water box 11A of the second side plate 112. In this way, the first water box 11A of the first side plate 111 and the second side plate 112 is formed by the cooperation of the first punching groove 114A and the second punching groove 115A, so that the probability of manufacturing the first side plate 111 and the second side plate 112 is higher, which helps to improve the yield of the first side plate 111 and the second side plate 112.

[0097] Please refer to Figure 1 In some structural forms, the plurality of side plates 11 further includes two heat insulation plates 113 arranged oppositely and spaced apart, and 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 cooperatively constitute at least part of the flue gas chamber 10A.

[0098] In this way, by arranging the two heat insulation plates 113, the heat of the flue gas can be reduced to overflow outward, thereby effectively improving the heat exchange efficiency.

[0099] Please refer to Figures 6-8In some embodiments, the box 10 further has a smoke inlet 10B and a smoke outlet 10C, both of which are in communication with the flue gas cavity 10A. For example, the smoke inlet 10B and the smoke outlet 10C are the same opening, i.e. the flue gas flows into the flue gas cavity 10A from the smoke inlet 10B, changes the flow direction when flowing to the bottom wall of the flue gas cavity 10A, and then flows out from the smoke outlet 10C. In another example, the smoke inlet 10B and the smoke outlet 10C are located on opposite sides of the box 10, so that the flue gas flows into the flue gas cavity 10A from the smoke inlet 10B without changing the flow direction, and then flows out from the smoke outlet 10C.

[0100] The first water box 11A of the first side plate 111 includes a first main heat exchange water box 111A and a first condensation heat exchange water box 111B, and the first water box 11A of the second side plate 112 includes a second main heat exchange water box 112A and a second condensation heat exchange water box 112B.

[0101] The heat exchange pipes 22 include a plurality of heat exchange pipes 22, which include a first main heat exchange pipe group 221 and a condensation heat exchange pipe group 222. The first main heat exchange pipe group 221 includes a plurality of first main heat exchange pipes 2211, both ends of which are in communication with the first main heat exchange water box 111A and the second main heat exchange water box 112A, respectively. The condensation heat exchange pipe group 222 includes a plurality of condensation heat exchange pipes 2221, both ends of which are in communication with the first condensation heat exchange water box 111B and the second condensation heat exchange water box 112B, respectively. In this embodiment, the plurality of first main heat exchange pipes 2211 of the first main heat exchange pipe group 221 can adopt a series or parallel waterway form, and the plurality of condensation heat exchange pipes 2221 of the condensation heat exchange pipe group 222 can adopt a series or parallel waterway form, which is not limited in the present embodiment.

[0102] It can be understood that after the flue gas flows into the flue gas cavity 10A from the smoke inlet 10B, the flue gas first exchanges heat with the first main heat exchange pipe group 221 to heat the heat exchange liquid flowing through the first main heat exchange pipe 2211. After the heat exchange is completed, although the temperature of the flue gas has been reduced, the flue gas still contains a certain amount of heat. Therefore, as the flue gas continues to flow, the flue gas further exchanges heat with the heat exchange liquid flowing through the condensation heat exchange pipe group 222 to transfer the remaining heat in the flue gas (heat released when the water vapor in the flue gas condenses) to the heat exchange liquid flowing through the condensation heat exchange pipe group 222, so as to heat the heat exchange liquid flowing through the condensation heat exchange pipe group 222. In this way, the heat exchange liquid can be heated by most of the heat of the flue gas as much as possible, which effectively improves the heat exchange efficiency and achieves the effects of energy saving and environmental protection.

[0103] In some structural forms, the condensing heat exchange pipe 2221 is a corrugated pipe. It can be understood that the corrugated pipe has a corrugated structure formed on the pipe wall, and the corrugated structure can increase the heat exchange area of the corrugated pipe with the high-temperature flue gas, thereby improving the heat exchange efficiency of the corrugated pipe with the high-temperature flue gas, and the corrugated pipe has a lighter weight and a lower material cost.

[0104] Please refer to Figures 6-8 Further, the first main heat exchange water box 111A and the second main heat exchange water box 112A each include a plurality of first main heat exchange pipes 2211, and one first main heat exchange pipe 2211 is in communication with one first main heat exchange water box 111A and one second main heat exchange water box 112A, so that a plurality of first main heat exchange pipes 2211 are connected in series to form a series water circuit.

[0105] In this way, compared with the parallel water circuit form, the series water circuit form can avoid the phenomenon that the flow rate of the heat exchange liquid in some first main heat exchange pipes 2211 is low, so as to cause the empty pipe phenomenon or the water flow accumulation phenomenon of the first main heat exchange pipe 2211, thereby slowing down the water vaporization and scaling in the first main heat exchange pipe 2211, effectively reducing the risk of damage of the first main heat exchange pipe 2211, prolonging the service life of the first main heat exchange pipe group 221, avoiding the explosion of the water tank assembly 1, and ensuring the safety of the water tank assembly 1.

[0106] Please refer to Figures 6-8 Further, the first condensing heat exchange water box 111B and the second condensing heat exchange water box 112B each include a plurality of condensing heat exchange pipes 2221.

[0107] In this way, compared with the series water circuit form, the embodiment can increase the flow rate of the heat exchange liquid by using at least two condensing heat exchange pipes 2221, thereby improving the water output of the gas water heater.

[0108] In addition, on the basis that the condensing heat exchange pipe group 222 is located on the side of the first main heat exchange pipe group 221 away from the flue gas inlet 10B, the temperature of the flue gas has been reduced after flowing through the first main heat exchange pipe group 221, so that even if the flow rate of the heat exchange liquid in some condensing heat exchange pipes 2221 is low, the adverse effect of the flue gas on the condensing heat exchange pipe 2221 will be reduced, so that the requirement of a large water output can be met while reducing the risk of damage of the condensing heat exchange pipe 2221.

[0109] In order to improve the utilization rate of the heat of the flue gas, please refer to Figures 7-8In some embodiments, the first water box 11A of the second side plate 112 further comprises a first cross-layer water box 112C, which is in communication with one of the first main heat exchange pipes 2211 and one of the condensation heat exchange pipes 2221.

[0110] In this way, the heat exchange liquid of the condensation heat exchange pipe group 222 can flow to the first main heat exchange pipes 2211 of the first main heat exchange pipe group 221 through the first cross-layer water box 112C, thereby improving the utilization rate of the heat of the flue gas and improving the heating efficiency of the flue gas on the heat exchange liquid.

[0111] For a better understanding of the present application, reference will be made by way of example to the accompanying drawings in which: Figures 6-8 In some embodiments, the water tank assembly 1 further comprises two water box members 30, which are respectively connected to the outer sides of the first side plate 111 and the second side plate 112 and are each formed with a second water box 30A having a certain volume to serve as a water storage function.

[0112] The first main heat exchange pipe group 221 further comprises a plurality of second main heat exchange pipes 2212 located on the side of the plurality of first main heat exchange pipes 2211 facing the flue gas inlet 10B. One end of the plurality of second main heat exchange pipes 2212 is provided through the first side plate 111 and in communication with the second water box 30A, and the other end is provided through the second side plate 112 and in communication with the second water box 30A. For example, the second stamping plate 115 is provided with a second through hole, and at this time, the second main heat exchange pipes 2212 can be sequentially provided through the first through hole of the first stamping plate 114 and the second through hole of the second stamping plate 115 to be in communication with the second water box 30A.

[0113] It can be understood that the plurality of second main heat exchange pipes 2212 are located on the side of the plurality of first main heat exchange pipes 2211 facing the flue gas inlet 10B, so that part of the flue gas will flow to the second main heat exchange pipes 2212 first and then to the first main heat exchange pipes 2211. Therefore, the temperature of the flue gas contacting the second main heat exchange pipes 2212 is usually higher. If the second main heat exchange pipes 2212 are in communication with the first water box 11A, the connection between the second main heat exchange pipes 2212 and the first water box 11A will have flue gas flowing through it, such as high-temperature flue gas flowing through the welding joint, which will cause the solder of the welding joint between the second main heat exchange pipes 2212 and the first water box 11A to melt, thereby increasing the risk of separation between the second main heat exchange pipes 2212 and the first water box 11A.

[0114] Therefore, by providing a member independent of the side plate 11, i.e., the water box member 30, and arranging the water box member 30 on the outer side of the side plate 11, it is possible to avoid the flow of high-temperature flue gas to the connection between the second main heat exchange pipes 2212 and the second water box 30A, thereby effectively reducing the risk of separation between the second main heat exchange pipes 2212 and the second water box 30A.

[0115] Please refer to Figure 8 Further, along the arrangement direction of the plurality of first main heat exchange pipes 2211, the plurality of first main heat exchange pipes 2211 and the plurality of second main heat exchange pipes 2212 are arranged alternately. Specifically, part of the flue gas can flow through the gap between the plurality of second main heat exchange pipes 2212 relatively close to the flue gas inlet 10B, and then directly flow to the plurality of first main heat exchange pipes 2211. In this way, the second main heat exchange pipes 2212 can avoid blocking the first main heat exchange pipes 2211, so that the flue gas can also flow smoothly to the plurality of first main heat exchange pipes 2211, thereby ensuring the uniformity of heat exchange and improving the utilization rate of flue gas. It is worth mentioning that compared with the staggered arrangement form, the alternate arrangement form does not cause the size of the box 10 in the arrangement direction of the plurality of first main heat exchange pipes 2211 to be too large, so as to appropriately reduce the overall size of the box 10.

[0116] Of course, in other embodiments, along the arrangement direction of the plurality of first main heat exchange pipes 2211 of each row, the plurality of first main heat exchange pipes 2211 and the plurality of second main heat exchange pipes 2212 are arranged alternately, and the present embodiment does not limit this.

[0117] Please refer to Figure 9 In some structural forms, the water box piece 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 the direction away from the cover plate 31 to form a third stamping groove 32A.

[0118] It can be understood that in the actual forming process of the third stamping groove 32A, the third stamping plate 32 can be deformed by using the cooperation of the press and the die 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 ensured, and the third stamping groove 32A can be directly formed.

[0119] The cover plate 31 is arranged on the third stamping plate 32, and the surface of the cover plate 31 and the groove wall surface of the third stamping groove 32A are cooperatively arranged to form a 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, and also facilitates the formation of the second water box 30A by the third stamping groove 32A of the third stamping plate 32, which is very convenient for manufacturing and processing.

[0120] Please refer to Figures 6-8 In some embodiments, for the water box piece 30 connected to the first side plate 111, the second water box 30A includes a third main heat exchange water box 30B and a second cross-layer water box 30C.

[0121] The third main heat exchange water box 30B is in communication with one end of the second main heat exchange pipe 2212, and the second cross-layer water box 30C is in communication with one end of one of the first main heat exchange pipes 2211 away from the second side plate 112 and one end of one of the second main heat exchange pipes 2212 away from the second side plate 112. In this way, the heat exchange liquid of the second main heat exchange pipe 2212 can flow to the first main heat exchange pipe group 221, thereby improving the utilization rate of the heat of the flue gas and improving the heating efficiency of the flue gas on the heat exchange liquid.

[0122] It is worth mentioning that the connection between one of the first main heat exchange pipes 2211 and the water box part 30 is located outside the first side plate 111, which also avoids the flow of high-temperature flue gas to the connection between the first main heat exchange pipe 2211 and the water box part 30, effectively reducing the risk of separation of the first main heat exchange pipe 2211 and the second water box 30A.

[0123] Please refer to Figures 6-8 In some embodiments, the first water box 11A of the first side plate 111 further includes at least two fourth main heat exchange water boxes 111C, and the first water box 11A of the second side plate 112 further includes a fifth main heat exchange water box 112D.

[0124] The plurality of heat exchange pipes 22 further includes a second main heat exchange pipe group 223, which is located on the side of the first main heat exchange pipe group 221 towards the flue gas inlet 10B and includes a plurality of third main heat exchange pipes 2231. At least two third main heat exchange pipes 2231 form a parallel heat exchange pipe group 2232.

[0125] The parallel heat exchange pipe group 2232 includes two groups, and one group is in communication with one of the fourth main heat exchange water boxes 111C and the fifth main heat exchange water box 112D at both ends, and the other group is in communication with the other fourth main heat exchange water box 111C and the fifth main heat exchange water box 112D at both ends. The two groups of parallel heat exchange pipe groups 2232 are spaced apart in the direction from the first side plate 111 to the second side plate 112, and are arranged adjacent to the first side plate 111 and the second side plate 112, respectively.

[0126] It can be understood that the flue gas flows from the flue gas inlet 10B, part of the flue gas flows to the second main heat exchange pipe group 223, and then flows to the first main heat exchange pipe group 221 and the condensation heat exchange pipe group 222 in turn, and another part of the flue gas flows to the first main heat exchange pipe group 221 through the gap between the two groups of parallel heat exchange pipe groups 2232, and then flows to the condensation heat exchange pipe group 222 through the first main heat exchange pipe group 221.

[0127] Therefore, the heat exchange efficiency of the heat exchanger 20 and the flue gas can be improved by adding the second main heat exchange tube group 223. Moreover, the heat exchange liquid flowing through the second main heat exchange tube group 223 can flow back and forth by connecting the heat exchange tube groups 2232, thereby improving the heat exchange efficiency of the heat exchange liquid and the flue gas flowing through the second main heat exchange tube group 223.

[0128] Moreover, the interval arrangement of the two groups of heat exchange tube groups 2232 ensures that the second main heat exchange tube group 223 does not excessively block the flue gas flowing to the first main heat exchange tube group 221, thereby effectively ensuring the heat exchange efficiency of the heat exchanger 20 and the flue gas.

[0129] Please refer to Figures 6-8 Further, the second water box 30A of the water box 30 connected to the first side plate 111 further comprises a third cross-layer water box 30D.

[0130] One of the two groups of heat exchange tube groups 2232 is further arranged through the second stamping plate 115 of the first side wall to communicate with the third cross-layer water box 30D, and one end of one of the second main heat exchange tubes 2212 away from the second side plate 112 communicates with the third cross-layer water box 30D. Therefore, 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 of heat of the flue gas and the heating efficiency of the flue gas on the heat exchange liquid.

[0131] Moreover, the connection of one of the second main heat exchange tubes 2212 to the third cross-layer water box 30D and the connection of one of the two groups of heat exchange tube groups 2232 to the third cross-layer water box 30D are located outside the first side plate 111. Therefore, on the basis that the high-temperature flue gas does not flow through the connection, the risk of separation of the second main heat exchange tube 2212 from the second water box 30A and the risk of separation of the heat exchange tube group 2232 from the second water box 30A are effectively reduced.

[0132] Please refer to Figures 6-8 Further, the box 10 further comprises a water inlet 10D and a water outlet 10E, wherein the water inlet 10D communicates with the first condensation heat exchange water box 111B, and the water outlet 10E communicates with the third main heat exchange water box. Therefore, the heat exchange liquid can flow in the order of the water inlet 10D, the condensation heat exchange tube group 222, the first main heat exchange tube group 221, the second main heat exchange tube group 223, and the water outlet 10E, thereby realizing the circulation of the heat exchange liquid in the heat exchange tube 22 and improving the utilization of heat of the flue gas.

[0133] The water inlet 10D can also be replaced by being in communication with the second condensing heat exchange water box 112B. In this way, the water inlet 10D and the water outlet 10E are located at different sides of the box body 10, so as to facilitate the arrangement of pipelines connected to the water inlet 10D and the water outlet 10E, and to leave sufficient disassembly space.

[0134] Please refer to Figures 10-12 In some embodiments, the heat exchanger 20 further comprises heat exchange fins 21. The heat exchange fins 21 can be made of copper to have better heat conduction performance. Of course, the heat exchange fins 21 can also be made of other metal materials such as stainless steel, and the present embodiment does not limit this.

[0135] The heat exchange fins 21 comprise fin bodies 211 and enclosing members 212. The fin bodies 211 are main parts of the heat exchange fins 21 and can be arranged in a substantially rectangular shape. Therefore, the fin bodies 211 can have a thickness direction, a width direction and a length direction perpendicular to each other.

[0136] The enclosing members 212 can be arranged in a ring shape to enclose the heat exchange pipes 22. Specifically, the enclosing members 212 are connected to one side surface of the fin bodies 211 in the thickness direction and cooperatively form a plurality of pipe passing openings 21A with the fin bodies 211. One heat exchange pipe 22 is correspondingly arranged in one pipe passing opening 21A. It can be understood that the solder is filled in the gap between the pipe passing opening 21A and the heat exchange pipe 22, so that the outer pipe wall of the heat exchange pipe 22 can be welded with the opening wall of the pipe passing opening 21A, thereby realizing the welding of the heat exchange fins 21 and the heat exchange pipes 22.

[0137] However, the inventors found in the production and manufacturing process that the solder cannot fill the gap between the heat exchange pipe 22 and the pipe passing opening 21A well, which reduces the connection area between the heat exchange pipe 22 and the pipe passing opening 21A, thereby reducing the heat transfer efficiency of the heat exchange pipe 22 and the heat exchange fin 21 on the one hand, and reducing the stability of the connection between the heat exchange pipe 22 and the heat exchange fin 21 on the other hand.

[0138] Based on this, in the embodiment, the enclosing member 212 has a material passing opening 212A which is in communication with the pipe passing opening 21A, wherein the material passing opening 212A can be a gap opened on the edge of the enclosing member 212 or an opening opened on the outer side surface of the enclosing member 212, and the embodiment is not limited in this regard. The material passing opening 212A is used for the solder to flow to the gap between the pipe passing opening 21A and the heat exchange pipe 22, in this way, the solder can first flow to the enclosing member 212 and then continue to flow through the material passing opening 212A of the enclosing member 212 to the gap between the pipe passing opening 21A and the heat exchange pipe 22, and then through high-temperature heating, the solder located in the gap between the pipe passing opening 21A and the heat exchange pipe 22 is melted, and after subsequent cooling and solidification, the connection of the solder with the mouth wall of the pipe passing opening 21A and the outer pipe wall of the heat exchange pipe 22 is realized, and then the welding of the heat exchange fin 21 and the heat exchange pipe 22 is realized.

[0139] The technical scheme of the embodiment realizes at least the following technical effects through the cooperation of the fin body 211 and the enclosing member 212 to configure the pipe passing opening 21A, and the enclosing member 212 having the material passing opening 212A:

[0140] Firstly, based on the presence of the fin body 211, the enclosing member 212 connected with the fin body 211 is arranged, and the pipe passing opening 21A is configured through the cooperation of the enclosing member 212 and the fin body 211, so that the depth of the pipe passing opening 21A is deepened, and then the connection area of the mouth wall of the pipe passing opening 21A and the outer pipe wall of the heat exchange pipe 22 is increased, so that the heat transfer efficiency of the heat exchange pipe 22 and the heat exchange fin 21 is improved, and the stability of the connection of the heat exchange pipe 22 and the heat exchange fin 21 is improved.

[0141] Secondly, the material passing opening 212A is arranged on the enclosing member 212, so that the solder can flow to the gap between the pipe passing opening 21A and the heat exchange pipe 22 through the material passing opening 212A, so that the solder can fill the gap between the pipe passing opening 21A and the heat exchange pipe 22 as much as possible, and the probability of the local gap not being filled with the solder is reduced, so that the connection area of the mouth wall of the pipe passing opening 21A and the outer pipe wall of the heat exchange pipe 22 is increased, so that the heat transfer efficiency of the heat exchange pipe 22 and the heat exchange fin 21 is improved, and the stability of the connection of the heat exchange pipe 22 and the heat exchange fin 21 is improved.

[0142] Please refer to Figures 10-12 In some embodiments, the material passing opening 212A includes a plurality of, such as two, three or four, etc., and the embodiment is not limited in this regard. Among them, the plurality of material passing openings 212A are arranged at intervals along the circumference of the enclosing member 212.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] 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 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.

[0148] Please refer to the following: Figures 11-12In some embodiments, the overfeed opening 212A is an arc-shaped opening recessed in the thickness direction towards the fin body 211. In this way, the shape of the overfeed opening 212A is regular, facilitating processing. Moreover, the design of the overfeed opening 212A recessed in the thickness direction towards the fin body 211 can make the opening area of the overfeed opening 212A larger, that is, the overfeed opening 212A is flared, thereby increasing the flow of solder from the overfeed opening 212A to the gap between the overpipe opening 21A and the heat exchange pipe 22, and further improving the probability of the solder filling the gap between the overpipe opening 21A and the heat exchange pipe 22.

[0149] For reference, please see Figures 11-12 In some embodiments, the overfeed opening 212A does not extend to the intersection line of the enclosing member 212 and the fin body 211. In this way, the enclosing member 212 as a whole is in a continuous form rather than a partially disconnected form, thereby achieving the effect of intercepting the flow, preventing the solder from flowing to the area outside the gap between the overpipe opening 21A and the heat exchange pipe 22 directly from the overfeed opening 212A.

[0150] Moreover, the overfeed opening 212A is an arc-shaped opening recessed in the thickness direction towards the fin body 211. In this way, the shape of the overfeed opening 212A is regular, facilitating processing. Moreover, the design of the overfeed opening 212A recessed in the thickness direction towards the fin body 211 can make the opening area of the overfeed opening 212A larger, that is, the overfeed opening 212A is flared, thereby increasing the flow of solder from the overfeed opening 212A to the gap between the overpipe opening 21A and the heat exchange pipe 22, and further improving the probability of the solder filling the gap between the overpipe opening 21A and the heat exchange pipe 22.

[0151] For reference, please see Figures 13-14 In some embodiments, the heat exchange fin 21 includes a plurality of heat exchange fins 21 arranged at intervals in the thickness direction, and each of the plurality of heat exchange fins 21 is provided with a feeding opening 211A, which is in communication with the overfeed opening 212A.

[0152] Among them, the feeding openings 211A of the plurality of heat exchange fins 21 are aligned in the thickness direction for placing the solder. It can be understood that the solder is in a strip shape, and based on the cooperation of the feeding openings 211A of the plurality of heat exchange fins 21, the strip-shaped solder can be directly placed on the feeding openings 211A of the plurality of heat exchange fins 21, so that part of the subsequent solder can also flow to the gap between the overpipe opening 21A and the heat exchange pipe 22 along the overfeed opening 212A when the heat exchanger 20 enters the soldering furnace.

[0153] Further, for the same heat exchange fin 21, the feeding opening 211A and the passing opening 212A are located in the same radial direction of the passing pipe opening 21A. In this way, the solder placed in the feeding opening 211A can flow to the passing opening 212A from the feeding opening 211A in a shorter path, effectively shortening the flow path length of the solder, thereby effectively reducing the possibility of the solder solidifying in advance due to heat loss in the excessively long flow path, resulting in the probability of not flowing into the gap between the pipe opening and the heat exchange pipe 22.

[0154] Please refer to Figure 13 In some embodiments, the enclosing member 212 includes a plurality, and it can be understood that the fin body 211 is configured in cooperation with the plurality of enclosing members 212 to form a plurality of passing pipe openings 21A, and accordingly, a plurality of heat exchange pipes 22 are arranged in one-to-one correspondence with the plurality of passing pipe openings 21A.

[0155] The plurality of enclosing members 212 are arranged in at most two rows, that is, the plurality of enclosing members 212 can be arranged in one row or two rows. The at most two rows of enclosing members 212 are arranged in a width direction, and each row includes a plurality of enclosing members 212 arranged in a length direction, for example, the plurality of passing pipe openings 21A in one row are arranged for the plurality of first main heat exchange pipes 2211, and the plurality of passing pipe openings 21A in the other row are arranged for the plurality of second main heat exchange pipes 2212.

[0156] The feeding opening 211A includes a plurality, and one feeding opening 211A is arranged in correspondence with one enclosing member 212. In this way, a single heat exchange fin 21 is arranged for a plurality of heat exchange pipes 22 to improve the overall heat exchange efficiency, and through the arrangement of the plurality of feeding openings 211A and the plurality of enclosing members 212, the solder placed at different feeding openings 211A can flow to the corresponding passing opening 212A, respectively, to ensure that the solder can fill the gap between the heat exchange pipe 22 and the passing pipe opening 21A as much as possible.

[0157] Please refer to Figures 13-14 In some embodiments, the heat exchange fin 21 includes a plurality, the plurality of heat exchange fins 21 are arranged in a thickness direction, and the enclosing member 212 of each of the plurality of heat exchange fins 21 is provided with a limiting portion 2121.

[0158] Among them, along the arrangement direction of the plurality of heat exchange fins 21, the limiting portion 2121 of any heat exchange fin 21 is used to limit and resist the adjacent heat exchange fin 21.

[0159] In this way, on the basis of limiting and resisting, the fin bodies 211 of the plurality of heat exchange fins 21 can be distributed at the same spacing as much as possible, so that the heat exchange efficiency of the heat exchange pipes 22 arranged in the plurality of heat exchange fins 21 in each region in the arrangement direction of the plurality of heat exchange fins 21 is as much as possible, and the uniformity of the heat exchange effect is improved.

[0160] Please refer to Figure 12 Further, the limiting portion 2121 is a limiting flange 2122, which is formed on the edge of the enclosing member 212 away from the fin body 211 in the thickness direction. It can be understood that the limiting flange 2122 can be formed by stamping and folding a part of the enclosing member 212 itself, thereby reducing the assembly step of the limiting flange 2122 and the enclosing member 212, and on the basis of the limiting flange 2122 and the enclosing member 212 being an integral component, the strength of the connection between the limiting flange 2122 and the enclosing member 212 can be effectively guaranteed.

[0161] The limiting flange 2122 is arranged at an angle with the enclosing member 212, for example, at an angle of 90 degrees, that is, the limiting flange 2122 is arranged vertically with the enclosing member 212. In the radial direction of the pipe passing opening 21A, the limiting flange 2122 is arranged to extend away from the pipe passing opening 21A to avoid interfering with the arrangement of the heat exchange pipes 22. In this way, the limiting flange 2122 resists the heat exchange fins 21 to ensure that the fin bodies 211 of the plurality of heat exchange fins 21 are distributed at the same spacing, and the structure of the limiting flange 2122 is simple and easy to manufacture and produce.

[0162] Please refer to Figure 12 Optionally, a plurality of limiting portions 2121 are arranged on the same enclosing member 212, for example, a plurality of limiting flanges 2122 are arranged on the enclosing member 212 at intervals in the circumferential direction. In this embodiment, the plurality of limiting portions 2121 are arranged on the enclosing member 212 to limit and resist the adjacent heat exchange fins 21 in the circumferential direction, thereby further ensuring that the fin bodies 211 of the plurality of heat exchange fins 21 are distributed at the same spacing.

[0163] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present patent, any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

[0164] The above is only a preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present 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 surface of the plate facing the third stamping plate cooperates with the groove wall 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 stamped plate on the first side wall to communicate with the third cross-layer water box, and one end of one of the second main heat exchange tubes 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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