Combustion chamber structure and gas water heating equipment comprising same

Abstract

The invention relates to a combustion chamber structure and gas water heating equipment comprising the same. The combustion chamber structure is located between the combustor and the heat exchanger, the combustion chamber structure comprises a coil pipe, the coil pipe comprises multiple circles of sub-pipe sections, all the sub-pipe sections are arranged in the axial direction of the combustion chamber structure and are sequentially connected end to end, a combustion inner cavity is defined by the inner surfaces of all the sub-pipe sections, and every two adjacent circles of sub-pipe sections are connected in a sealed mode. The combustion chamber structure and the gas water heating equipment comprising the combustion chamber structure are high in heat exchange efficiency.

Description

Technical Field

[0001] The present application relates to the field of hot water technology, and in particular to a combustion chamber structure and a gas hot water device comprising the same. Background Art

[0002] Traditional gas water heaters usually include a burner and a combustion chamber structure. The burner is used to ignite the combustible gas. The combustion chamber structure is located on the side of the burner where the combustion flame is formed, and allows the water flow inside the burner to absorb the heat of the combustion flame and the smoke. In other words, after the cold water enters the combustion chamber structure, it can form a heat exchange with the combustion flame and the smoke inside the combustion chamber structure, thereby forming hot water discharged from the combustion chamber structure for room heating, daily washing, etc.

[0003] However, the traditional combustion chamber structure cannot fully utilize the heat of the combustion flame and flue gas to increase the temperature of the internal water flow, resulting in low heat exchange efficiency of the combustion chamber structure and the gas water heater including the combustion chamber structure. Summary of the invention

[0004] In view of the above problems, according to various embodiments of the present application, a combustion chamber structure and a gas water heater including the same are provided.

[0005] A combustion chamber structure is located between a burner and a heat exchanger, the combustion chamber structure includes a coil, the coil includes multiple circles of pipe segments, all of the sub-pipe segments are arranged axially along the combustion chamber structure and are connected end to end in sequence, the inner surfaces of all of the sub-pipe segments define a combustion cavity, and two adjacent circles of the sub-pipe segments are sealed and connected.

[0006] In some of the embodiments, two adjacent circles of the sub-tube segments are sealed and connected by soldering.

[0007] In some embodiments, the two circles of sub-pipe segments of the coil pipe that are farthest in axial direction from each other in the combustion chamber structure are defined as a first circle pipe segment and a tail circle pipe segment, and the heat exchanger and the burner are respectively arranged on two sides of the first circle pipe segment and the tail circle pipe segment that are away from each other;

[0008] The combustion chamber structure includes at least one shielding assembly;

[0009] When the shielding assembly is connected to the first circle pipe section, the shielding assembly is used to shield the gap between the heat exchanger and the first circle pipe section; and / or

[0010] When the shielding assembly is connected to the tail ring pipe segment, the shielding assembly is used to shield the gap between the tail ring pipe segment and the burner.

[0011] In some embodiments, the shielding assembly includes a plurality of assemblies arranged in sequence along the winding direction of the coil, the assemblies connected to the first circle pipe segment are used to shield the gap between the first circle pipe segment and the heat exchanger, and the assemblies connected to the tail circle pipe segment are used to shield the gap between the tail circle pipe segment and the burner.

[0012] In some embodiments, the assembly includes a shielding portion extending axially along the combustion chamber structure, wherein the shielding portion is partially accommodated in the combustion cavity and is sealedly connected to the first circle pipe segment or the tail circle pipe segment respectively connected thereto, and the remaining portion of the shielding portion extends out of the combustion cavity.

[0013] In some embodiments, the assembly part further includes an assembly portion, the assembly portion corresponds to the shielding portion one by one, and is bent with the corresponding shielding portion;

[0014] All the assembly parts corresponding to the first circle pipe section are used to assemble the heat exchanger;

[0015] All the assembly parts corresponding to the tail ring pipe section are used to assemble the burner.

[0016] In some embodiments, the surface of the assembly portion corresponding to the first circle pipe segment and facing the heat exchanger is arranged coplanarly;

[0017] The surface of the assembly portion corresponding to the tail ring pipe segment facing the burner is arranged coplanarly.

[0018] In some embodiments, the shielding assembly includes a plurality of support members sequentially arranged along the winding direction of the coil;

[0019] The support member corresponding to the first circle pipe segment is assembled on the first circle pipe segment, and two ends spaced apart along the winding direction of the coil are respectively overlapped with different assembly parts corresponding to the first circle pipe segment;

[0020] The support member corresponding to the tail ring pipe segment is assembled on the tail ring pipe segment, and two ends spaced apart along the winding direction of the coil are respectively overlapped with different assembly parts corresponding to the tail ring pipe segment.

[0021] In some embodiments, the assembly parts further include a limiting portion protruding from the respective assembly parts;

[0022] The limiting portion corresponding to the first circle pipe segment is surrounded to form a first limiting space for limiting the heat exchanger, and the limiting portion corresponding to the tail circle pipe segment is surrounded to form a second limiting space for limiting the burner.

[0023] A gas water heater comprises a combustion chamber structure as described in any one of the above embodiments.

[0024] The combustion chamber structure and the gas water heater including the same directly define the inner surface of all the sub-tube sections of the coil to form a combustion cavity, so that the heat of the combustion flame and smoke can be transferred to the water flow inside the coil only through the coil, which not only reduces the number of heat transfer parts and simplifies the manufacturing process, but also improves the heat transfer efficiency, heat utilization rate and heat exchange efficiency. In addition, since each adjacent two circle tube sections are sealed and connected, the possibility of heat diffusing to the outside through each adjacent two circle tube sections is reduced, and the heat loss is also reduced, and the heat exchange efficiency is improved.

[0025] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the structure of a gas water heater in some embodiments of the present application.

[0028] Figure 2 for Figure 1 A front view of a gas water heater is shown.

[0029] Figure 3 for Figure 1 The structural schematic diagram of the combustion chamber structure in the gas water heater shown.

[0030] Figure 4 for Figure 3 The combustion chamber structure shown is a schematic structural diagram cut along the AA direction.

[0031] Figure 5 for Figure 4 An enlarged schematic diagram of local structure B in the combustion chamber structure shown.

[0032] Figure Number:

[0033] 1. Gas hot water equipment;

[0034] 10. Combustion chamber structure; 11. Coil; 111. Sub-pipe section; 112. First circle pipe section; 113. Tail circle pipe section; 114. Combustion cavity; 12. Tin solder; 13. Shielding assembly; 131. Assembly part; 1311. Shielding part; 1312. Assembly part; 1313. Limiting part; 132. Support member; 133. First limiting space; 134. Second limiting space; 135. Water inlet joint; 136. Water outlet joint;

[0035] 20. Burner;

[0036] 30. Heat exchanger. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0043] See also Figure 1 and Figure 2 The present application provides a gas water heater 1, which is used to heat and discharge hot water for room heating, daily washing, etc. The gas water heater 1 can be a wall-mounted boiler, a gas water heater, etc., which is not specifically limited here.

[0044] The gas water heater 1 includes a burner 20, a combustion chamber structure 10 and a heat exchanger 30. The burner 20 is used to output and ignite combustible gas. The combustion chamber structure 10 is arranged on one side of the burner 20 where the combustion flame is formed, and is located between the burner 20 and the heat exchanger 30. The combustion chamber structure 10 is used to provide a space for accommodating the combustion flame. The heat exchanger 30 is the main heat exchange place in the gas water heater 1.

[0045] The combustion chamber structure 10 has a coil 11 and a combustion cavity 114, and the heat exchanger 30 has a heat exchange channel and a heat exchange cavity. The coil 11 of the combustion chamber structure 10 is connected to the heat exchange channel of the heat exchanger 30, and the combustion cavity 114 of the combustion chamber structure 10 is connected to the heat exchange cavity of the heat exchanger 30.

[0046] In actual operation, the burner 20 outputs and ignites the combustible gas, and the combustible gas burns in the combustion cavity 114 of the combustion chamber structure 10 and generates combustion flames and smoke, and the smoke is discharged to the outside after flowing through the heat exchange cavity of the heat exchanger 30. In this process, the water flow in the coil 11 absorbs the heat of the combustion flame and smoke in the combustion cavity 114, and is discharged into the heat exchange channel of the heat exchanger 30 after heating. In the process of the water flow flowing in the heat exchange channel, the water flow can absorb the heat of the smoke in the heat exchange cavity of the heat exchanger 30 and heat it, and finally output it to the outside for users to wash, heat, etc.

[0047] Since the temperature of the water is increased when it flows through the coil 11 of the combustion chamber structure 10, the water with a higher temperature flows into the heat exchange channel of the heat exchanger 30 and exchanges heat with the flue gas, and the temperature rises to a greater extent, and the thermal efficiency of combustion is also greatly improved.

[0048] Please also read Figure 3 and Figure 4 The coil 11 of the combustion chamber structure 10 includes a plurality of circle tube segments 111, all of the sub-tube segments 111 are arranged along the axial direction of the combustion chamber structure 10 and are connected end to end in sequence, the inner surfaces of all of the sub-tube segments 111 define a combustion cavity 114, and two adjacent circle tube segments 111 are sealed and connected.

[0049] The coil 11 is generally made of a metal material with excellent thermal conductivity and high temperature resistance, such as a copper tube.

[0050] Optionally, each two adjacent circle pipe segments 111 can be sealed together by filling with external components, such as gluing, soldering, etc., or by direct sealing contact, which can be specifically set according to the difficulty of the process.

[0051] The coil 11 has at least two circles of tube segments 111, preferably at least three circles of tube segments 111. The more circles of the sub-tube segments 111, the larger the size of the combustion cavity 114 defined by the inner surfaces of all the sub-tube segments 111 in the axial direction of the combustion chamber structure 10, so as to facilitate the complete accommodation of the combustion flame. For the convenience of description, the following embodiments are all described by taking the coil 11 having at least three circles of tube segments 111 as an example.

[0052] When the inlet of the coil 11 and the outlet of the coil 11 are collinearly arranged on a straight line extending in the axial direction of the parallel combustion chamber structure 10, each circle pipe segment 111 is a complete circle pipe segment arranged around the winding direction of the coil 11. When the inlet of the coil 11 and the outlet of the coil 11 are not collinearly arranged on a straight line extending in the axial direction of the parallel combustion chamber structure 10, there is a sub-pipe segment 111 that is less than one circle among all the sub-pipe segments 111, and the sub-pipe segment 111 that is less than one circle is an intermediate sub-pipe segment connected to the first circle pipe segment 112 and the tail circle pipe segment 113. Among them, the first circle pipe segment 112 and the tail circle pipe segment 113 are two complete circles of sub-pipe segments 111 arranged in the axial direction of the combustion chamber structure 10 and the farthest apart, and each circle pipe segment 111 connected between the first circle pipe segment 112 and the tail circle pipe segment 113 is an intermediate sub-pipe segment.

[0053] The coil 11 is used to provide a space for accommodating water flow, and the inner surfaces of all the sub-pipe sections 111 in the coil 11 define a space for accommodating combustion flames and smoke. In actual operation, the combustion flame generated by the burner 20 burns in the combustion cavity 114 and forms smoke, and the water flow flowing in the coil 11 absorbs the heat of the combustion flame and smoke and heats up to form hot water.

[0054] In a conventional combustion chamber structure 10, the combustion chamber structure 10 includes a main body and a coil 11 wound around the outside of the main body, a combustion cavity 114 is provided inside the main body, and the heat of the combustion flame and smoke is transferred to the water flow inside the coil 11 through the main body and the coil 11 in turn to heat the water flow. Since there are many parts through which heat is transferred, the heat loss is large, the heat transfer efficiency is slow, the heat utilization rate is low, and the heat exchange efficiency is not high. Moreover, in a conventional combustion chamber structure 10, the number of turns of the coil 11 is small, and the gap between each two adjacent circle pipe segments 111 is large, which causes the heat to easily diffuse through the gap between the adjacent sub-pipe segments 111, causing further heat loss and reduced heat exchange efficiency.

[0055] In the present application, the main body in the traditional combustion chamber structure 10 is omitted, and the inner surface of all the sub-tube segments 111 of the coil 11 is directly defined to form a combustion cavity 114. In this way, the heat of the combustion flame and smoke can be transferred to the water flow inside the coil 11 only through the coil 11, which not only reduces the number of heat transfer parts and simplifies the manufacturing process, but also improves the heat transfer efficiency, heat utilization rate and heat exchange efficiency. In addition, since each adjacent two circle tube segments 111 are sealed and connected, the possibility of heat diffusing to the outside through each adjacent two circle tube segments 111 is reduced, and the heat loss is also reduced, and the heat exchange efficiency is improved.

[0056] Please also read Figure 5 In some embodiments of the present application, two adjacent circle tube segments 111 are sealed and connected by soldering.

[0057] Soldering refers to a welding method that uses low-melting-point metal solder to heat, melt, penetrate and fill the gaps between metal parts. Specifically, tin solder 12 is provided between each two adjacent circle tube segments 111, and the tin solder 12 is the above-mentioned low-melting-point metal solder.

[0058] When soldering is used for sealing connection, each adjacent sub-pipe segment 111 can be well sealed to further prevent heat diffusion. In addition, the tin solder 12 also has good thermal conductivity, and the heat on it can be transferred to the water flow inside the coil 11 through the sub-pipe segment 111, which is conducive to improving the utilization rate of heat.

[0059] Please refer again Figure 2 , and also see Figure 3 and Figure 4 In some embodiments of the present application, the two circle pipe segments 111 of the coil 11 which are the farthest in axial direction in the combustion chamber structure 10 are defined as the first circle pipe segment 112 and the tail circle pipe segment 113, and the heat exchanger 30 and the burner 20 are respectively arranged on the two sides of the first circle pipe segment 112 and the tail circle pipe segment 113 which are away from each other;

[0060] The combustion chamber structure 10 includes at least one shielding assembly 13; when the shielding assembly 13 is connected to the first circle pipe segment 112, the shielding assembly 13 is used to shield the gap between the heat exchanger 30 and the first circle pipe segment 112; and / or when the shielding assembly 13 is connected to the tail circle pipe segment 113, the shielding assembly 13 is used to shield the gap between the tail circle pipe segment 113 and the burner 20.

[0061] Optionally, there is one shielding assembly 13, which can be used to connect with the first circle pipe segment 112 and to shield the axial gap between the heat exchanger 30 and the first circle pipe segment 112 in the combustion chamber structure 10; or, the shielding assembly 13 can also be used to connect with the tail circle pipe segment 113 and to shield the axial gap between the tail circle pipe segment 113 and the burner 20 in the combustion chamber structure 10.

[0062] Preferably, there are two shielding assemblies 13, one of which is used to shield the gap between the heat exchanger 30 and the first circle pipe segment 112 in the axial direction of the combustion chamber structure 10, and the other shielding assembly 13 is used to shield the gap between the tail circle pipe segment 113 and the burner 20 in the axial direction of the combustion chamber structure 10. For the convenience of description, the following embodiments are described by taking the case where there are two shielding assemblies 13 as an example.

[0063] Since the first circle pipe section 112 and the tail circle pipe section 113 are both sub-pipe sections 111 arranged in a coiled manner, there is a height difference between the various parts of the first circle pipe section 112 arranged along the coiling direction of the coil 11, and between the various parts of the tail circle pipe section 113 arranged along the coiling direction of the coil 11 in the axial direction of the combustion chamber structure 10. However, the end surface of the heat exchanger 30 connected to the combustion chamber structure 10, and the end surface of the burner 20 connected to the combustion chamber structure 10 are both flat surfaces, and are generally arranged perpendicular to the axial direction of the combustion chamber structure 10. Therefore, when the burner 20 and the heat exchanger 30 are distributed on opposite sides of the coil 11 and connected to the coil 11, there will be gaps between the end surface of the heat exchanger 30 connected to the coil 11 and the first circle pipe section 112, and between the end surface of the burner 20 connected to the coil 11 and the tail circle pipe section 113. In this way, the combustion flame and smoke in the combustion cavity 114 leak to the outside, and the utilization rate of heat is reduced.

[0064] By providing the shielding component 13, when the shielding component 13 shields the axial gap between the heat exchanger 30 and the first circle pipe segment 112 in the combustion chamber structure 10, or the axial gap between the tail circle pipe segment 113 and the burner 20 in the combustion chamber structure 10, the possibility of leakage of combustion flame and flue gas can be reduced, which is beneficial to improving the utilization rate of heat, so as to ultimately achieve an improvement in heat exchange efficiency.

[0065] Furthermore, in some embodiments of the present application, the shielding assembly 13 includes a plurality of assembly parts 131 arranged in sequence along the winding direction of the coil 11, the assembly part 131 connected to the first circle pipe segment 112 is used to shield the gap between the first circle pipe segment 112 and the heat exchanger 30, and the assembly part 131 connected to the tail circle pipe segment 113 is used to shield the gap between the tail circle pipe segment 113 and the burner 20.

[0066] In the same shielding component 13, all the assembly parts 131 are arranged in sequence along the winding direction of the coil 11, so that the shielding component 13 can shield the gap between the first circle pipe segment 112 and the heat exchanger 30, or the gap between the tail circle pipe segment 113 and the burner 20 along the winding direction of the coil 11, so that the shielding effect is better and the heat loss degree is reduced.

[0067] In some embodiments of the present application, the assembly parts 131 include a shielding portion 1311 extending axially along the combustion chamber structure 10, and the shielding portion 1311 is partially accommodated in the combustion cavity 114 and is sealedly connected to the first circle pipe segment 112 or the tail circle pipe segment 113 connected to each other, and the remaining portion of the shielding portion 1311 extends out of the combustion cavity 114.

[0068] Among them, each shielding part 1311 is partially accommodated in the combustion cavity 114, for example, one-third of each shielding part 1311, or two-thirds of each shielding part 1311, or the part of each shielding part 1311 calculated by a specific calculation formula, etc., which will not be repeated here. The remaining part of each shielding part 1311 refers to: the remaining part of each shielding part 1311 except the remaining part accommodated in the combustion cavity 114. The sealing connection between the shielding part 1311 and the first circle pipe section 112 or the tail circle pipe section 113 can be welding, gluing or other sealing connection methods, which can be specifically set as needed. Preferably, the shielding part 1311 is welded to the first circle pipe section 112 or the tail circle pipe section 113 to improve the simplicity and reliability of the sealing connection.

[0069] When the shielding portion 1311 is partially accommodated in the combustion cavity 114 and the rest of the shielding portion 1311 extends out of the combustion cavity 114, the volume occupied by each shielding portion 1311 can be reduced, and the combustion chamber structure 10 can be more beautiful. The shielding portion 1311 is sealed and connected to the first circle pipe segment 112 or the tail circle pipe segment 113 connected thereto, so that the shielding portion 1311 and the first circle pipe segment 112 or the tail circle pipe segment 113 can be seamlessly connected to prevent heat from diffusing to the outside.

[0070] In some embodiments of the present application, the assembly part 131 also includes an assembly portion 1312, which corresponds one-to-one to the shielding portion 1311 and is bent to the corresponding shielding portion 1311; all the assembly portions 1312 corresponding to the first circle pipe segment 112 are used to assemble the heat exchanger 30; and all the assembly portions 1312 corresponding to the tail circle pipe segment 113 are used to assemble the burner 20.

[0071] The assembly part 1312 is a plate-like structure. All the assembly parts 1312 corresponding to the first circle pipe segment 112 refer to all the assembly parts 1312 in the shielding assembly 13 connected to the first circle pipe segment 112. All the assembly parts 1312 corresponding to the tail circle pipe segment 113 refer to all the assembly parts 1312 in the shielding assembly 13 connected to the tail circle pipe segment 113.

[0072] In the same assembly part 131, the bending angle between the shielding portion 1311 and the assembly portion 1312 is preferably 90°, so that the shielding portion 1311 can extend along the winding direction of the coil 11, and the assembly portion 1312 can extend in a direction perpendicular to the axial direction of the combustion chamber structure 10. The assembly portion 1312 extending in a direction perpendicular to the axial direction of the combustion chamber structure 10 is more convenient for supporting the heat exchanger 30 or assembling the burner 20.

[0073] All the assembly parts 131 in the same shielding assembly 13 are arranged in sequence along the winding direction of the coil 11, so that all the assembly parts 1312 in the same shielding assembly 13 can cooperate to stably support the heat exchanger 30 along the circumference of the heat exchanger 30, or stably assemble the burner 20 along the circumference of the burner 20, making the installation of the heat exchanger 30 and / or the burner 20 more reliable.

[0074] In some embodiments of the present application, the surface of the assembly portion 1312 corresponding to the first circle pipe segment 112 facing the heat exchanger 30 is coplanarly arranged; the surface of the assembly portion 1312 corresponding to the tail circle pipe segment 113 facing the burner 20 is coplanarly arranged.

[0075] Among them, the surfaces facing the heat exchanger 30 in each assembly part 1312 corresponding to the first circle pipe segment 112 are coplanarly arranged, and combined to form a first assembly surface for assembling the heat exchanger 30; the surfaces facing the burner 20 in each assembly part 1312 corresponding to the tail circle pipe segment 113 are coplanarly arranged, and combined to form a second assembly surface for assembling the burner 20.

[0076] The first assembly surface and the second assembly surface are both arranged perpendicular to the axial direction of the combustion chamber structure 10. Figure 2 Taking the current state as an example, the axial direction of the combustion chamber structure 10 is a vertical direction, and the first assembly surface and the second assembly surface are both horizontal surfaces.

[0077] Generally speaking, the end surface where the heat exchanger 30 is connected to the combustion chamber structure 10 and the end surface where the burner 20 is connected to the combustion chamber structure 10 are both flat surfaces and are arranged parallel to the first assembly surface and the second assembly surface.

[0078] Since both the first assembly surface and the second assembly surface are flat surfaces, the end surface of the heat exchanger 30 connected to the combustion chamber structure 10 can be fitted with the first assembly surface, and the end surface of the burner 20 connected to the combustion chamber structure 10 can be fitted with the second assembly surface. In this way, the heat exchanger 30 and the burner 20 can be stably connected to the coil 11 through the shielding component 13, and the installation is more reliable.

[0079] Moreover, when the end surface of the heat exchanger 30 connected to the combustion chamber structure 10 is fitted with the first assembly surface, there is almost no gap between the heat exchanger 30 and the combustion chamber structure 10 in the axial direction of the combustion chamber structure 10, and when the end surface of the burner 20 connected to the combustion chamber structure 10 is fitted with the second assembly surface, there is almost no gap between the burner 20 and the combustion chamber structure 10 in the axial direction of the combustion chamber structure 10. In this way, the leakage of combustion flames and smoke can be further prevented to further improve the heat exchange efficiency.

[0080] In some embodiments of the present application, the shielding assembly 13 includes a plurality of support members 132 arranged in sequence along the winding direction of the coil 11. The support members 132 corresponding to the first circle pipe segment 112 are assembled on the first circle pipe segment 112, and the two ends spaced apart along the winding direction of the coil 11 are respectively overlapped with different assembly portions 1312 corresponding to the first circle pipe segment 112; the support members 132 corresponding to the tail circle pipe segment 113 are assembled on the tail circle pipe segment 113, and the two ends spaced apart along the winding direction of the coil 11 are respectively overlapped with different assembly portions 1312 corresponding to the tail circle pipe segment 113.

[0081] The supporting members 132 corresponding to the first circle pipe segment 112 refer to the supporting members 132 in the shielding assembly 13 connected to the first circle pipe segment 112. The supporting members 132 corresponding to the tail circle pipe segment 113 refer to the supporting members 132 in the shielding assembly 13 connected to the tail circle pipe segment 113.

[0082] The support members 132 are plate-shaped or sheet-shaped structures. Each support member 132 corresponding to the first circle pipe segment 112 is arranged on the side of the first circle pipe segment 112 facing away from the tail circle pipe segment 113, and each support member 132 corresponding to the tail circle pipe segment 113 is arranged on the side of the tail circle pipe segment 113 facing away from the first circle pipe segment 112. In the same shielding assembly 13, the two ends of each assembly portion 1312 are respectively overlapped at the two adjacent ends of two adjacent support members 132.

[0083] By arranging a support member 132 in the shielding assembly 13, the support member 132 can fill the axial gap between the assembly portion 1312 supported by it and the coil 11 in the combustion chamber structure 10. In this way, on the one hand, it is not only beneficial to reduce the risk of combustion flame and smoke leakage, so that the combustion chamber structure 10 has a higher heat exchange efficiency, but also on the other hand, it can also enhance the strength of the assembly portion 1312, which is beneficial to the reliability of the assembly portion 1312 in assembling the heat exchanger 30 and / or the burner 20.

[0084] In some embodiments of the present application, the assembly part 131 also includes a limiting portion 1313 protruding from the respective assembly portion 1312, and the limiting portion 1313 corresponding to the first circle pipe segment 112 is arranged to form a first limiting space 133 of the limiting heat exchanger 30, and the limiting portion 1313 corresponding to the rear circle pipe segment 113 is arranged to form a second limiting space 134 of the limiting burner 20.

[0085] All the limiting parts 1313 corresponding to the first circle pipe segment 112 refer to all the limiting parts 1313 in the shielding assembly 13 connected to the first circle pipe segment 112. All the limiting parts 1313 corresponding to the tail circle pipe segment 113 refer to all the limiting parts 1313 in the shielding assembly 13 connected to the tail circle pipe segment 113.

[0086] The number of the limiting parts 1313 that can be set on each assembly part 1312 can be one or more, and the number of the limiting parts 1313 is not limited here.

[0087] All the limiting parts 1313 corresponding to the first circle pipe segment 112 are located on the first assembly surface and are surrounded to form a first limiting space 133, and the end face of the heat exchanger 30 located in the first limiting space 133 is in contact with the first assembly surface. All the limiting parts 1313 corresponding to the tail circle pipe segment 113 are located on the second assembly surface and are surrounded to form a second limiting space 134, and one end of the burner 20 is limited in the second limiting space 134, and the end face of the burner 20 located in the second limiting space 134 is in contact with the second assembly surface.

[0088] By providing the stopper 1313 on each assembly part 131 , the compactness and stability of the assembly between the combustion chamber structure 10 and the heat exchanger 30 and / or between the combustion chamber structure 10 and the burner 20 can be improved.

[0089] Please refer again Figure 1 , Figure 2 and Figure 3 In some embodiments of the present application, the combustion chamber structure 10 also includes a water inlet joint 135 and a water outlet joint 136. The water inlet joint 135 is assembled at the water inlet of the coil 11 and is connected to the water inlet. The water outlet joint 136 is assembled at the water outlet and is connected to the water outlet.

[0090] For example, in some embodiments, the water inlet joint 135 is directly connected to the water inlet pipe of the gas water heater 1, and the water outlet joint 136 is connected to the input port of the heat exchange channel in the heat exchanger 30. Water from the external water source flows into the coil 11 of the combustion chamber structure 10 through the water inlet pipe and the water inlet joint 135. After heat exchange, water flows out from the water outlet joint 136 and enters the heat exchange channel of the heat exchanger 30 to exchange heat with the flue gas in the heat exchange inner cavity of the heat exchanger 30.

[0091] Alternatively, the burner 20 is a water-cooled burner, the water inlet joint 135 is connected to the output port of the water-cooling channel in the burner 20, and the water outlet joint 136 is connected to the input port of the heat exchange channel in the heat exchanger 30. The water flow from the external water source flows into the coil 11 of the combustion chamber structure 10 through the water inlet pipe, the water-cooling channel and the water inlet joint 135 in sequence, and after heat exchange, flows out from the water outlet joint 136 and enters the heat exchange channel of the heat exchanger 30.

[0092] By providing the water inlet joint 135 and the water outlet joint 136, the water channel outside the combustion chamber structure 10 can conveniently input the water flow that has not undergone heat exchange into the combustion chamber structure 10, and the combustion chamber structure 10 can conveniently output the water flow that has undergone heat exchange to the external water channel.

[0093] The combustion chamber structure 10 and the gas water heater 1 including the same directly define the inner surface of all the sub-tube segments 111 of the coil 11 to form a combustion cavity 114, so that the heat of the combustion flame and smoke can be transferred to the water flow inside the coil 11 only through the coil 11, which not only reduces the number of heat transfer parts and simplifies the manufacturing process, but also improves the heat transfer efficiency, heat utilization rate and heat exchange efficiency. In addition, since each adjacent two circle tube segments 111 are sealed and connected, the possibility of heat diffusing to the outside through each adjacent two circle tube segments 111 is reduced, and the heat loss is also reduced, and the heat exchange efficiency is improved.

[0094] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0095] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A combustion chamber structure, located between a burner (20) and a heat exchanger (30), characterized in that: The combustion chamber structure comprises a coil (11), wherein the coil (11) comprises a plurality of circles of tube segments (111), wherein all of the sub-tube segments (111) are arranged axially along the combustion chamber structure and are connected end to end in sequence, wherein the inner surfaces of all of the sub-tube segments (111) define a combustion cavity (114), and two adjacent circles of the sub-tube segments (111) are sealed and connected.

2. The combustion chamber structure according to claim 1, characterized in that: Two adjacent circles of sub-tube segments (111) are sealed and connected by soldering.

3. The combustion chamber structure according to claim 1 or 2, characterized in that: The two circles of sub-pipe segments (111) of the coil (11) which are farthest in axial direction from each other in the combustion chamber structure are defined as a first circle pipe segment (112) and a tail circle pipe segment (113), and the heat exchanger (30) and the burner (20) are respectively arranged on two sides of the first circle pipe segment (112) and the tail circle pipe segment (113) which are away from each other; The combustion chamber structure comprises at least one shielding component (13); When the shielding component (13) is connected to the first circle pipe section (112), the shielding component (13) is used to shield the gap between the heat exchanger (30) and the first circle pipe section (112); and / or When the shielding component (13) is connected to the tail ring pipe section (113), the shielding component (13) is used to shield the gap between the tail ring pipe section (113) and the burner (20).

4. The combustion chamber structure according to claim 3, characterized in that: The shielding assembly (13) comprises a plurality of assembly parts (131) arranged in sequence along the winding direction of the coil (11); the assembly part (131) connected to the first circle pipe segment (112) is used to shield the gap between the first circle pipe segment (112) and the heat exchanger (30); and the assembly part (131) connected to the tail circle pipe segment (113) is used to shield the gap between the tail circle pipe segment (113) and the burner (20).

5. The combustion chamber structure according to claim 4, characterized in that: The assembly (131) includes a shielding portion (1311) extending axially along the combustion chamber structure, wherein the shielding portion (1311) is partially accommodated in the combustion cavity (114) and is sealed to the first circle pipe segment (112) or the tail circle pipe segment (113) respectively connected thereto, and the remaining portion of the shielding portion (1311) extends out of the combustion cavity (114).

6. The combustion chamber structure according to claim 5, characterized in that: The assembly part (131) further comprises an assembly portion (1312), the assembly portion (1312) corresponds to the shielding portion (1311) one by one, and is bent and arranged with respect to the corresponding shielding portion (1311); All of the assembly parts (1312) corresponding to the first circle pipe section (112) are used to assemble the heat exchanger (30); All of the assembly parts (1312) corresponding to the tail ring pipe section (113) are used to assemble the burner (20).

7. The combustion chamber structure according to claim 6, characterized in that: The surface of the assembly portion (1312) corresponding to the first circle pipe segment (112) and facing the heat exchanger (30) is arranged coplanarly; The surface of the assembly portion (1312) corresponding to the tail ring pipe segment (113) and facing the burner (20) is arranged coplanarly.

8. The combustion chamber structure according to claim 6, characterized in that: The shielding assembly (13) comprises a plurality of support members (132) arranged in sequence along the winding direction of the coil (11); The support member (132) corresponding to the first circle pipe segment (112) is assembled on the first circle pipe segment (112), and two ends spaced apart along the winding direction of the coiled tube (11) are respectively overlapped with different assembly portions (1312) corresponding to the first circle pipe segment (112); The support member (132) corresponding to the tail ring pipe segment (113) is assembled on the tail ring pipe segment (113), and two ends spaced apart along the winding direction of the coil (11) are respectively overlapped with different assembly parts (1312) corresponding to the tail ring pipe segment (113).

9. The combustion chamber structure according to claim 6, characterized in that: The assembly part (131) further comprises a limiting portion (1313) protruding from each of the assembly parts (1312); The limiting portion (1313) corresponding to the first circle pipe segment (112) is enclosed to form a first limiting space (133) for limiting the heat exchanger (30), and the limiting portion (1313) corresponding to the tail circle pipe segment (113) is enclosed to form a second limiting space (134) for limiting the burner (20).

10. A gas water heater, characterized in that: It comprises a combustion chamber structure as described in any one of claims 1 to 9 above.

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