Heat exchanger and gas water heater

Abstract

A turbulent flow structure is arranged in a heat exchange tube, the turbulent flow structure comprises a turbulent flow spring and a turbulent flow piece, a first folding edge and a second folding edge which are opposite in folding direction are arranged on the turbulent flow piece, a first turbulent flow hole is formed in one side of the first folding edge, and a second turbulent flow hole is formed in one side of the second folding edge. Water flow can radially flow in the heat exchange tube through the first turbulent flow holes and the second turbulent flow holes and is in full contact with the inner walls of the heat exchange tube in all directions, so that the heat exchange efficiency of the heat exchanger can be improved, and the gasification noise generated by gasification of the water flow close to the inner wall of the lower side of the heat exchange tube due to high temperature of the lower side wall of the heat exchange tube can be reduced; and therefore, the water flow temperature at all positions in the heat exchange pipe is more balanced, and the use experience of a user is improved. In addition, the utility model further discloses a gas water heater with the heat exchanger.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a heat exchanger and a gas water heater. Background Technology

[0002] Gas water heaters typically consist of a combustion chamber and a heat exchanger. The heat exchanger includes heat exchange fins and heat exchange tubes that pass through the heat exchange fins. The heat generated by the combustion of gas in the combustion chamber can be transferred to the heat exchanger and heat the water in the heat exchange tubes. However, when the water flows rapidly in the heat exchange tubes, it can easily generate noise and lead to low heat exchange efficiency. Furthermore, due to the large radial temperature difference within the heat exchange tubes, local overheating and vaporization can occur on the inner surface of the heat exchange tubes that is in contact with the water, which can also generate vaporization noise, seriously affecting the user experience. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a heat exchanger that can effectively reduce the noise generated when water flows inside the heat exchange tubes and has high heat exchange efficiency.

[0004] A heat exchanger according to an embodiment of the present invention includes: a heat exchange tube; and a flow-deflecting structure, including a flow-deflecting plate and a flow-deflecting spring disposed within the heat exchange tube. The flow-deflecting plate is arranged along the length direction of the heat exchange tube, and the flow-deflecting spring is sleeved on the outer periphery of the flow-deflecting plate. The flow-deflecting plate is provided with multiple sets of flow-deflecting components arranged sequentially along the length direction of the flow-deflecting plate. Each set of flow-deflecting components includes a first folded edge and a second folded edge arranged at intervals along the length direction of the heat exchange tube. The first folded edge and the second folded edge are both folded outwards radially relative to the flow-deflecting plate along the heat exchange tube, and the folding directions of the first folded edge and the second folded edge are opposite. A first flow-deflecting hole penetrating the flow-deflecting plate is opened on one side of each first folded edge, and a second flow-deflecting hole penetrating the flow-deflecting plate is opened on one side of each second folded edge.

[0005] The heat exchanger according to the embodiments of this utility model has at least the following beneficial effects:

[0006] In the heat exchanger of this embodiment, a turbulence structure is provided inside the heat exchange tube. This turbulence structure includes a turbulence spring and turbulence plates, which turbulent the water inside the heat exchange tube, reducing the water flow velocity and thus reducing laminar flow noise caused by the rapid water flow against the inner wall of the heat exchange tube, thereby improving heat exchange efficiency. Furthermore, by providing a first and a second folded edge with opposite folding directions on the turbulence plates, and opening a first turbulence hole on one side of the first folded edge and a second turbulence hole on one side of the second folded edge, the water flow inside the heat exchange tube can be sufficiently turbulent. The water flow can flow radially through the first and second turbulence holes and fully contact the inner wall of the heat exchange tube in all directions. This improves the heat exchange efficiency of the heat exchanger and reduces vaporization noise caused by the vaporization of water near the lower inner wall of the heat exchange tube due to the higher temperature of the lower inner wall. This also makes the water temperature more uniform throughout the heat exchange tube, improving the user experience.

[0007] According to some embodiments of the present invention, each of the first folded edges is provided with at least one third turbulence hole, and each of the second folded edges is provided with at least one fourth turbulence hole.

[0008] According to some embodiments of the present invention, in each group of the turbulence components, the first fold and the second fold are arranged in the front-back direction. The first fold is formed by folding upwards from the corresponding first turbulence hole, and the first fold is arranged downwards from front to back. The second fold is formed by folding downwards from the corresponding second turbulence hole, and the second fold is arranged upwards from front to back.

[0009] According to some embodiments of the present invention, the outer periphery of the first folded edge and the outer periphery of the second folded edge are both arc-shaped with openings facing the spoiler.

[0010] According to some embodiments of the present invention, the heat exchange tube includes at least two connecting tubes and at least one bend, with adjacent connecting tubes connected in series via the bend; each connecting tube is equipped with the turbulence structure, and the turbulence structure further includes a flow stabilizer plate installed in the connecting tube, the flow stabilizer plate having multiple fifth turbulence holes, one end of the flow stabilizer plate being inserted into the turbulence plate and abutting against one end of the turbulence spring.

[0011] According to some embodiments of the present invention, the connecting pipe includes a straight pipe. In each of the turbulence structures, there are two flow stabilizers. The two flow stabilizers are respectively disposed at both ends of the straight pipe and are inserted into the two ends of the turbulence stabilizer. The two ends of the turbulence spring are respectively abutted against the two flow stabilizers. The bent pipe is inserted into the straight pipe and presses against the side of the flow stabilizer away from the turbulence stabilizer.

[0012] According to some embodiments of the present invention, the connecting pipe includes a U-shaped pipe, the U-shaped pipe including two straight pipe sections and a connecting section connecting the two straight pipe sections, and two adjacent U-shaped pipes are connected in series through the bend; wherein, each straight pipe section is equipped with the flow-disrupting structure, in each set of flow-disrupting structures, the end of the flow-disrupting plate and the flow-disrupting spring near the connecting section are pressed against the inner wall of the connecting section, the flow-stabilizing plate is installed at the end of the straight pipe section away from the connecting section and is inserted into the flow-disrupting plate, the flow-stabilizing plate is pressed against the end of the flow-disrupting spring away from the connecting section, and the bend is inserted into the end of the straight pipe section away from the connecting section and presses against the flow-stabilizing plate.

[0013] A gas water heater according to an embodiment of the present invention includes: a shell having an installation cavity; a combustion chamber disposed within the installation cavity; and a heat exchanger of any of the above embodiments, installed within the installation cavity and located at the upper end of the combustion chamber.

[0014] The gas water heater according to the embodiments of this utility model has at least the following beneficial effects:

[0015] By employing a heat exchanger according to any of the above embodiments, a turbulence spring and a turbulence plate are provided inside the heat exchange tube. The turbulence plate has a first fold and a second fold with opposite folding directions. A first turbulence hole is opened on one side of the first fold and a second turbulence hole is opened on one side of the second fold. This can fully turbulent the water flow inside the heat exchange tube, reduce the water flow velocity, and allow the water flow to fully contact the inner wall of the heat exchange tube in all directions. This can improve the heat exchange efficiency of the heat exchanger and reduce the vaporization noise caused by the higher temperature of the lower inner wall of the heat exchange tube. This can greatly reduce the noise generated during the use of the gas water heater, and at the same time, make the water temperature more uniform throughout the heat exchange tube, which is conducive to improving the heat exchange efficiency of the gas water heater and enhancing the user experience.

[0016] According to some embodiments of this utility model, an inlet pipe and an outlet pipe extending to the outside of the housing are further installed in the mounting cavity. The inlet pipe is connected to one end of the heat exchange tube, and the outlet pipe is connected to the other end of the heat exchange tube. A water inlet sensor and a flow stabilizer are installed inside the inlet pipe. The flow stabilizer is located on the side of the water inlet sensor closer to the heat exchange tube. The flow stabilizer includes a cylinder, a flow stabilizing element, and a sealing ring. A limiting plate extending inward is provided at one periphery of the cylinder, and an annular limiting groove arranged circumferentially along the cylinder is formed on the inner wall of the cylinder. The flow stabilizing element includes a main... The system comprises a body, an annular body, and multiple connecting ribs. The outer peripheral wall of the body has multiple outwardly protruding teeth, all of which are arranged sequentially at intervals along the circumference of the body. A water outlet channel is formed between every two adjacent teeth. The annular body is fitted around the outer periphery of the body. One end of each connecting rib is connected to the body, and the other end is connected to the annular body. A water inlet channel is formed between every two adjacent connecting ribs. The outer peripheral wall of the annular body has an outwardly protruding retaining ring, which is engaged within the annular limiting groove. A sealing ring is fitted around the outer periphery of the body and located between the annular body and the limiting plate.

[0017] According to some embodiments of the present invention, the heat exchanger further includes a fin assembly and two support plates. The fin assembly is located between the two support plates, and the heat exchange tube passes through the two support plates of the fin assembly. The support plate is provided with a downwardly bent insertion part, and a plurality of slots corresponding to the insertion parts are opened on the upper edge of the combustion chamber. The support plate abuts downward against the upper edge of the combustion chamber, so that the insertion part is inserted into the corresponding slot.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of a heat exchanger according to an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the heat exchange tube according to an embodiment of the present utility model;

[0022] Figure 3 This is a cross-sectional schematic diagram of the heat exchange tube according to an embodiment of the present utility model;

[0023] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0024] Figure 5 This is a schematic diagram of the turbulence structure according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the baffle plate according to an embodiment of the present utility model;

[0026] Figure 7 This is a schematic diagram of a gas water heater according to an embodiment of the present utility model;

[0027] Figure 8 This is a cross-sectional schematic diagram of a gas water heater according to an embodiment of the present utility model;

[0028] Figure 9 for Figure 8 A partial enlarged view of the current stabilizer at point B;

[0029] Figure 10 This is an exploded view of the current stabilizer according to an embodiment of the present invention.

[0030] Figure label:

[0031] Heat exchange tube 100, connecting tube 110, straight tube section 111, connecting section 112, straight tube 113, bend tube 120, fin assembly 130, support plate 140, plug-in section 141;

[0032] The flow-disrupting structure 200, the flow-disrupting plate 210, the first folded edge 211, the second folded edge 212, the first flow-disrupting hole 213, the second flow-disrupting hole 214, the third flow-disrupting hole 215, the fourth flow-disrupting hole 216, the flow-disrupting spring 220, the flow-stabilizing plate 230, and the fifth flow-disrupting hole 231;

[0033] Shell 300, combustion chamber 310, water inlet pipe 320, water outlet pipe 330;

[0034] Flow stabilizer 400, cylinder 410, limiting plate 411, annular limiting groove 412, flow stabilizer 420, main body 421, annular body 422, connecting rib 423, toothed part 424, retaining ring 425, sealing ring 430. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0038] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0039] Reference Figures 1 to 6 This utility model provides a heat exchanger, which includes a heat exchange tube 100 and a turbulence structure 200. The turbulence structure 200 includes a turbulence plate 210 and a turbulence spring 220 disposed within the heat exchange tube 100. The turbulence plate 210 is arranged along the length direction of the heat exchange tube 100, and the turbulence spring 220 is sleeved on the outer periphery of the turbulence plate 210. Multiple sets of turbulence components are arranged sequentially along the length direction of the turbulence plate 210 on the turbulence plate 210. Each set of turbulence components includes components arranged along the length direction of the heat exchange tube 100. The heat pipe 100 has a first fold 211 and a second fold 212 arranged at intervals along its length. The first fold 211 and the second fold 212 are both folded outwards along the radial direction of the heat pipe 100 relative to the baffle 210, and the folding directions of the first fold 211 and the second fold 212 are opposite. Each first fold 211 has a first baffle hole 213 through the baffle 210 on one side, and each second fold 212 has a second baffle hole 214 through the baffle 210 on one side.

[0040] In the heat exchanger of this utility model embodiment, by providing a turbulence structure 200 inside the heat exchange tube 100, the turbulence structure 200 includes a turbulence spring 220 and a turbulence plate 210, thereby turbulenting the water inside the heat exchange tube 100, reducing the water flow velocity inside the heat exchange tube 100, thereby reducing laminar flow noise generated by the rapid water flow against the inner wall of the heat exchange tube 100, and improving heat exchange efficiency. Furthermore, by providing a first fold 211 and a second fold 212 with opposite folding directions on the baffle plate 210, and opening a first baffle hole 213 on one side of the first fold 211 and a second baffle hole 214 on one side of the second fold 212, the water flow inside the heat exchange tube 100 can be sufficiently turbulent. The water flow can flow radially inside the heat exchange tube 100 through the first baffle hole 213 and the second baffle hole 214 and fully contact the inner wall of the heat exchange tube 100 in all directions. This can improve the heat exchange efficiency of the heat exchanger and reduce the vaporization noise caused by the high temperature of the lower inner wall of the heat exchange tube 100. In addition, the water temperature inside the heat exchange tube 100 can be more uniform, which is beneficial to improving the user experience.

[0041] Reference Figures 1 to 6 In some embodiments, each first fold 211 is provided with three third turbulence holes 215, and each second fold 212 is provided with three fourth turbulence holes 216. The third turbulence holes 215 and the fourth turbulence holes 216 can further turbulentize the water flow inside the heat exchanger, so that the water flow in all parts of the heat exchange tube 100 is fully mixed and in full contact with the inner wall of the heat exchange tube 100. This not only improves the heat exchange efficiency, but also reduces the noise generated by the water flow in the heat exchange tube 100.

[0042] It is understandable that each of the first folded edges 211 has three third bleed holes 215, and each of the second folded edges 212 has three fourth bleed holes 216; this is only for... Figures 1 to 6 As illustrated in the exemplary description, in some embodiments, the number of third bleed holes 215 opened on each first fold 211 can be three, one, two, four or more. Similarly, the number of fourth bleed holes 216 opened on each second fold 212 can be three, one, two, four or more. The present invention does not specifically limit this.

[0043] Reference Figures 1 to 6In some embodiments, in each set of turbulence components, the first fold 211 and the second fold 212 are arranged in the front-back direction. The first fold 211 is formed by folding upwards from the corresponding first turbulence hole 213, and the first fold 211 is arranged downwards from front to back. The second fold 212 is formed by folding downwards from the corresponding second turbulence hole 214, and the second fold 212 is arranged upwards from front to back. This can more fully turbulentize the passing water flow, reduce the water flow velocity, and ensure that the water flow at each point can fully contact the inner wall of the heat exchange tube 100. This not only reduces noise but also further improves heat exchange efficiency.

[0044] Reference Figures 1 to 6 In some embodiments, the outer periphery of the first fold 211 and the outer periphery of the second fold 212 are both arc-shaped with openings facing the baffle, thereby enabling the first fold 211 and the second fold 212 to fit the inner peripheral wall of the heat exchange tube 100, and also to guide the water flow, making the flow velocity of the passing water more uniform, and avoiding the influence of the flow velocity distribution of the water flow due to the presence of sharp points.

[0045] Reference Figures 1 to 6 In some embodiments, the heat exchange tube 100 includes at least two connecting tubes 110 and at least one bend 120, with adjacent connecting tubes 110 connected in series via the bend 120; each connecting tube 110 is equipped with a flow-stirring structure 200, and the flow-stirring structure 200 also includes a flow stabilizer 230 installed in the connecting tube 110. The flow stabilizer 230 has a plurality of fifth flow-stirring holes 231, and one end of the flow stabilizer 230 is inserted into the flow stabilizer 210 and abuts against one end of the flow-stirring spring 220.

[0046] In the above structure, by providing a turbulence structure 200 in each connecting pipe 110, the water flow in the heat exchange tube 100 can be sufficiently turbulent, which helps to further reduce the noise generated by the water flow and improve the heat exchange efficiency. In addition, the flow stabilizer 230 can be inserted into the turbulence 210 and abut against the turbulence spring 220, thereby improving the installation stability of the turbulence 210 and the turbulence spring 220, reducing the collision noise caused by the turbulence 210 and the turbulence spring 220 colliding with the inner wall of the heat exchange tube 100 due to shaking, thereby further improving the user experience.

[0047] In some embodiments, the connecting pipe 110 includes a straight pipe 113. In each flow-stabilizing structure 200, there are two flow stabilizers 230. The two flow stabilizers 230 are respectively disposed at both ends of the straight pipe 113 and are inserted into the ends of the flow stabilizer 210. The ends of the flow-stabilizing spring 220 are respectively abutted against the two flow stabilizers 230. The bent pipe 120 is inserted into the straight pipe 113 and presses against the side of the flow stabilizer 230 away from the flow stabilizer 210, thereby causing the flow stabilizer 210 and the flow-stabilizing spring to... The 220 is fixed between the two flow stabilizers 230. The bent tube 120 is inserted into the straight tube 113 and presses against the flow stabilizer 230, so that the two flow stabilizers 230 can stably clamp the middle baffle 210 and baffle spring 220. This allows for more stable fixing of the baffle 210 and baffle spring 220, further preventing the baffle 210 and baffle spring 220 from colliding with the inner wall of the heat exchange tube 100 due to shaking and generating collision noise.

[0048] Reference Figure 2 and Figure 3 In some embodiments, the connecting pipe 110 includes a U-shaped pipe, which includes two straight pipe sections 111 and a connecting section 112 connecting the two straight pipe sections 111. Adjacent U-shaped pipes are connected in series through a bend 120. Each straight pipe section 111 is equipped with a flow-disrupting structure 200. In each set of flow-disrupting structures 200, the ends of the flow-disrupting plate 210 and the flow-disrupting spring 220 near the connecting section 112 are pressed against the inner wall of the connecting section 112. The flow-stabilizing plate 230 is installed at the end of the straight pipe section 111 away from the connecting section 112 and is inserted into the flow-disrupting plate 210. The flow-stabilizing plate 230 is pressed against the end of the flow-disrupting spring 220 away from the connecting section 112. The bend 120 is inserted into the end of the straight pipe section 111 away from the connecting section 112 and is pressed against the flow-stabilizing plate 230.

[0049] In the above structure, the U-shaped tube can reduce the number of pipe fittings that need to be assembled in the heat exchange tube 100, and by setting a turbulence structure 200 in each straight section 111 of the U-shaped tube, the noise generated by the water flow in the heat exchange tube 100 can be greatly reduced, and the heat exchange efficiency of the heat exchanger can be greatly improved. In this design, one end of the turbulence-disrupting plate 210 is pressed against the inner wall of the connecting part 112, and the other end is inserted into the flow stabilizer plate 230. One end of the turbulence-disrupting spring 220 is pressed against the inner wall of the connecting part 112, and the other end is pressed against the flow stabilizer plate 230. In addition, the bent pipe 120 is inserted into the straight pipe part 111 and presses against the flow stabilizer plate 230. Thus, the turbulence-disrupting plate 210 and the flow stabilizer plate 220 can be stably installed between the inner wall of the connecting part 112 of the U-shaped pipe and the flow stabilizer plate 230 by the pressure of the bent pipe 120 against the flow stabilizer plate 230. The structure is simple, easy to install, and has high installation stability. This further avoids the collision noise caused by the turbulence-disrupting plate 210 and the turbulence-disrupting spring 220 colliding with the inner wall of the heat exchange tube 100 due to shaking.

[0050] Reference Figures 7 to 10 An embodiment of this utility model also provides a gas water heater, which includes a shell 300, a combustion chamber 310, and a heat exchanger as described in any of the above embodiments. The shell 300 has an installation cavity; the combustion chamber 310 is disposed within the installation cavity; and the heat exchanger is installed within the installation cavity and located at the upper end of the combustion chamber 310. Thus, the heat generated by the combustion of gas in the combustion chamber 310 can be transferred upwards to the heat exchanger and heat the water flow within the heat exchange tube 100. Furthermore, by employing the heat exchanger of any of the above embodiments, a turbulence spring 220 and a turbulence plate 210 are provided inside the heat exchange tube 100. The turbulence plate 210 is provided with a first fold 211 and a second fold 212 with opposite folding directions. A first turbulence hole 213 is opened on one side of the first fold 211, and a second turbulence hole 214 is opened on one side of the second fold 212. This allows for sufficient turbulence of the water flow inside the heat exchange tube 100. The water flow can flow radially inside the heat exchange tube 100 through the first turbulence hole 213 and the second turbulence hole 214 and make full contact with the inner wall of the heat exchange tube 100 in all directions. This can improve the heat exchange efficiency of the heat exchanger and reduce the vaporization noise caused by the high temperature of the lower inner wall of the heat exchange tube 100. This can greatly reduce the noise generated during the use of the gas water heater, and at the same time, it can make the water temperature in all parts of the heat exchange tube 100 more uniform, which is beneficial to improving the user experience.

[0051] Reference Figures 7 to 10 In some embodiments, an inlet pipe 320 and an outlet pipe 330 extending to the outside of the housing 300 are also installed in the mounting cavity. The inlet pipe 320 is connected to one end of the heat exchange tube 100, and the outlet pipe 330 is connected to the other end of the heat exchange tube 100.

[0052] The inlet pipe 320 is equipped with a flow stabilizer 400, which includes a cylinder 410, a flow stabilizer 420, and a sealing ring 430. One end of the cylinder 410 has an inwardly extending limiting plate 411. The inner wall of the cylinder 410 has an annular limiting groove 412 arranged circumferentially along the cylinder 410. The flow stabilizer 420 includes a main body 421, an annular body 422, and multiple connecting ribs 423. The outer peripheral wall of the main body 421 has multiple outwardly protruding teeth 424, all of which are arranged circumferentially along the main body 421. Arranged sequentially at intervals, a water outlet channel is formed between every two adjacent teeth 424. The annular body 422 is fitted around the outer periphery of the main body 421. One end of the connecting rib 423 is connected to the main body 421, and the other end is connected to the annular body 422. A water inlet channel is formed between every two adjacent connecting ribs 423. The outer peripheral wall of the annular body 422 is provided with an outwardly protruding retaining ring 425, which is engaged in the annular limiting groove 412. The sealing ring 430 is fitted around the outer periphery of the main body 421 and is located between the annular body 422 and the limiting plate 411.

[0053] In the above structure, by installing a flow stabilizer 400 at the inlet pipe 320, the flow stabilizer 400 can balance the inlet water pressure at various points in the inlet pipe 320 and stabilize the water flow velocity entering the heat exchange tube 100, thereby reducing the noise generated by the rapid flow of water in the inlet pipe 320. Specifically, by using the aforementioned flow stabilizer 400, the water flow in the inlet pipe 320 can flow to the inlet channel between the main body 421 and the annular body 422. When the water pressure at a certain point is too high, the sealing ring 430 is first squeezed upwards, causing the sealing ring 430 to deform against the outlet channel between the teeth 424 on the side wall of the main body 421. This reduces the opening of the outlet channel, preventing the water from flowing rapidly from the outlet channel into the heat exchange tube 100, thereby alleviating the water pressure flowing out of the outlet channel. This greatly reduces the sharp jet and laminar resonance noise in the inlet pipe 320, significantly improving the user experience.

[0054] Reference Figures 1 to 10 In some embodiments, the heat exchanger further includes a fin assembly 130 and two support plates 140. The fin assembly 130 is located between the two support plates 140, and the heat exchange tube 100 passes through the fin assembly 130 and the two support plates 140. The support plate 140 is provided with a downwardly bent insertion part 141. The upper edge of the combustion chamber 310 is provided with multiple slots corresponding to the insertion part 141. The support plate 140 abuts downward against the upper edge of the combustion chamber 310, so that the insertion part 141 is inserted into the corresponding slot. This facilitates the positioning and installation between the heat exchanger and the combustion chamber 310, making the positioning of the heat exchanger and the combustion chamber 310 accurate during installation. It is not easy for misalignment to cause abnormal noise between the fin assembly 130 and between the heat exchanger and the combustion chamber 310 when the hot air generated by the flame flows upward to the heat exchanger. This can further reduce the noise generated during the use of the water heater.

[0055] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A heat exchanger, characterized in that, include: Heat exchange tube (100); The turbulence structure (200) includes a turbulence plate (210) and a turbulence spring (220) disposed in the heat exchange tube (100). The turbulence plate (210) is arranged along the length direction of the heat exchange tube (100), and the turbulence spring (220) is sleeved on the outer periphery of the turbulence plate (210). The baffle plate (210) is provided with multiple sets of baffle components arranged sequentially along the length direction of the baffle plate (210). Each set of baffle components includes a first fold (211) and a second fold (212) arranged at intervals along the length direction of the heat exchange tube (100). The first fold (211) and the second fold (212) are both folded outwards in the radial direction of the heat exchange tube (100) relative to the baffle plate (210), and the folding directions of the first fold (211) and the second fold (212) are opposite. A first baffle hole (213) penetrating the baffle plate (210) is opened on one side of each first fold (211), and a second baffle hole (214) penetrating the baffle plate (210) is opened on one side of each second fold (212).

2. The heat exchanger according to claim 1, characterized in that, Each of the first folded edges (211) is provided with at least one third bleed hole (215), and each of the second folded edges (212) is provided with at least one fourth bleed hole (216).

3. The heat exchanger according to claim 1, characterized in that, In each set of the turbulence components, the first fold (211) and the second fold (212) are arranged in the front-back direction. The first fold (211) is formed by folding upward from the corresponding first turbulence hole (213) and the first fold (211) is arranged downward from front to back. The second fold (212) is formed by folding downward from the corresponding second turbulence hole (214) and the second fold (212) is arranged upward from front to back.

4. The heat exchanger according to claim 1, characterized in that, The outer periphery of the first fold (211) and the outer periphery of the second fold (212) are both arc-shaped with openings facing the spoiler.

5. The heat exchanger according to any one of claims 1 to 4, characterized in that, The heat exchange tube (100) includes at least two connecting tubes (110) and at least one bend (120), with adjacent connecting tubes (110) connected in series through the bend (120); Each of the connecting pipes (110) is equipped with the flow-disrupting structure (200), and the flow-disrupting structure (200) further includes a flow stabilizer (230) installed in the connecting pipe (110). The flow stabilizer (230) has a plurality of fifth flow-disrupting holes (231). One end of the flow stabilizer (230) is inserted into the flow-disrupting plate (210) and abuts against one end of the flow-disrupting spring (220).

6. The heat exchanger according to claim 5, characterized in that, The connecting pipe (110) includes a straight pipe (113). In each of the turbulence structures (200), there are two flow stabilizers (230). The two flow stabilizers (230) are respectively disposed at both ends of the straight pipe (113) and are inserted into the two ends of the turbulence stabilizer (210). The two ends of the turbulence spring (220) are respectively abutted against the two flow stabilizers (230). The bent pipe (120) is inserted into the straight pipe (113) and presses against the side of the flow stabilizer (230) away from the turbulence stabilizer (210).

7. The heat exchanger according to claim 5, characterized in that, The connecting pipe (110) includes a U-shaped pipe, which includes two straight pipe sections (111) and a connecting section (112) connecting the two straight pipe sections (111). Two adjacent U-shaped pipes are connected in series through the bend (120). Each of the straight pipe sections (111) is equipped with a flow-disrupting structure (200). In each set of flow-disrupting structures (200), the flow-disrupting plate (210) and the flow-disrupting spring (220) are pressed against the inner wall of the connecting part (112) at the end near the connecting part (112). The flow-stabilizing plate (230) is installed at the end of the straight pipe section (111) away from the connecting part (112) and is inserted into the flow-disrupting plate (210). The flow-stabilizing plate (230) is pressed against the end of the flow-disrupting spring (220) away from the connecting part (112). The bent pipe (120) is inserted into the end of the straight pipe section (111) away from the connecting part (112) and is pressed against the flow-stabilizing plate (230).

8. A gas-fired water heater, characterized in that, include: Housing (300) having a mounting cavity; Combustion chamber (310) is located within the mounting cavity; The heat exchanger according to any one of claims 1 to 7 is installed in the mounting cavity and located at the upper end of the combustion chamber (310).

9. The gas water heater according to claim 8, characterized in that, The mounting cavity is also equipped with an inlet pipe (320) and an outlet pipe (330) extending to the outside of the housing (300). The inlet pipe (320) is connected to one end of the heat exchange tube (100), and the outlet pipe (330) is connected to the other end of the heat exchange tube (100). The water inlet pipe (320) is equipped with a water inlet sensor and a flow stabilizer (400). The flow stabilizer (400) is located on the side of the water inlet sensor that is close to the heat exchange tube (100). The flow stabilizer (400) includes a cylinder (410), a flow stabilizer (420), and a sealing ring (430). A limiting plate (411) extending inward is provided on the periphery of one end of the cylinder (410). An annular limiting groove (412) arranged along the circumference of the cylinder (410) is provided on the inner wall of the cylinder (410). The flow stabilizer (420) includes a main body (421), an annular body (422), and multiple connecting ribs (423). The outer peripheral wall of the main body (421) is provided with multiple outwardly protruding teeth (424). All the teeth (424) are arranged sequentially at intervals along the circumference of the main body (421). A water outlet channel is formed between each two adjacent teeth (424). The annular body (422) is sleeved on the outer periphery of the main body (421). One end of the connecting rib (423) is connected to the main body (421), and the other end is connected to the annular body (422). A water inlet channel is formed between each two adjacent connecting ribs (423). The outer peripheral wall of the annular body (422) is provided with an outwardly protruding retaining ring (425), which is engaged in the annular limiting groove (412). The sealing ring (430) is sleeved on the outer periphery of the main body (421) and located between the annular body (422) and the limiting plate (411).

10. The gas water heater according to claim 8, characterized in that, The heat exchanger also includes a fin assembly (130) and two support plates (140). The fin assembly (130) is located between the two support plates (140), and the heat exchange tube (100) passes through the two support plates (140) of the fin assembly (130). The support plate (140) is provided with a downwardly bent insertion part (141). The upper edge of the combustion chamber (310) is provided with a plurality of slots corresponding to the insertion part (141). The support plate (140) abuts against the upper edge of the combustion chamber (310) downward, so that the insertion part (141) is inserted into the corresponding slot.

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