Condensing heat exchange device and gas water heater

Abstract

The utility model belongs to water heater technical field, specifically disclose a condensing heat exchange device and gas water heater, this including condensing casing, installation base plate and atomizer, condensing casing has first inner cavity, the bottom of first inner cavity forms first opening, condensing casing is equipped with first plug -in structure and first buckle connection structure respectively in the both opposite sides of first opening, installation base plate includes base body and sheet metal connecting piece, base body has second inner cavity, the top of second inner cavity forms second opening, second opening is linked together with first opening, sheet metal connecting piece is connected in base body, sheet metal connecting piece is equipped with second plug -in structure and second buckle connection structure respectively in the both opposite sides of second opening, second plug -in structure and first plug -in structure are detachable and are inserted, and first plug -in structure supports second plug -in structure, second buckle connection structure and first buckle connection structure are detachable and are buckled, and the dismounting efficiency of this atomizer is higher.

Description

Technical Field

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

[0002] Gas-fired water heaters heat water by passing the high-temperature flue gas generated by gas combustion through a heat exchanger, thereby exchanging heat between the flue gas and the water flowing through the exchanger. To fully utilize the heat from the flue gas, condensing gas-fired water heaters are becoming increasingly widely used.

[0003] Condensing gas water heaters add a condensing heat exchange device compared to conventional gas water heaters. This device includes a condensing shell, a mounting base, a condensing heat exchanger, and an atomizer. The condensing heat exchanger is used to cool the flue gas generated in the gas water heater, resulting in condensation of water vapor in the flue gas. The atomizer atomizes the condensate and discharges it into the atmosphere, thus preventing condensate from remaining inside the gas water heater and eliminating the need for an additional water pipe to drain the condensate. The atomizer is usually mounted on the mounting base, and the mounting base is typically connected to the condensing shell by screws or bolts.

[0004] When disassembling or assembling an atomizer, the threaded parts need to be loosened or tightened in order to detach the mounting base from or install it onto the condenser housing. Only then can the atomizer be detached or installed along with the mounting base. Since the threaded parts require special tools for disassembly and assembly, the disassembly and assembly process of the atomizer is cumbersome and inefficient. Utility Model Content

[0005] One of the technical problems solved by this utility model is to provide a condensation heat exchange device that can effectively solve the problem of cumbersome disassembly and assembly steps and low disassembly and assembly efficiency of atomizers.

[0006] The second technical problem solved by this utility model is to provide a gas water heater that can effectively solve the problem of cumbersome disassembly and assembly steps and low disassembly and assembly efficiency of gas water heaters.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] A condensation heat exchange device, comprising:

[0009] A condenser housing, the condenser housing having a first inner cavity, a first opening being formed at the bottom of the first inner cavity, and the condenser housing having a first plug-in structure and a first snap-fit ​​connection structure respectively on two opposite sides of the first opening;

[0010] The mounting base includes a base body and a sheet metal connector. The base body has a second inner cavity, and a second opening is formed at the top of the second inner cavity. The second opening communicates with a first opening. The sheet metal connector is connected to the base body. The sheet metal connector has a second insertion structure and a second snap-fit ​​connection structure on opposite sides of the second opening. The second insertion structure is detachably inserted into the first insertion structure, and the first insertion structure supports the second insertion structure. The second snap-fit ​​connection structure is detachably snap-fitted into the first snap-fit ​​connection structure, so that the base body is fixedly mounted on the condenser housing and the first opening is sealed.

[0011] Atomizer, wherein the atomizer is at least partially disposed in the second inner cavity.

[0012] The condensation heat exchange device described in this utility model has the following advantages compared with the prior art:

[0013] By providing a first insertion structure and a first snap-fit ​​connection structure on opposite sides of the first opening of the condenser housing, and a second insertion structure and a second snap-fit ​​connection structure on opposite sides of the second opening of the sheet metal connector, the operator only needs to insert the second insertion structure on the side of the mounting base with the atomizer onto the first insertion structure, so that the first insertion structure supports the second insertion structure along the opposite direction of the condenser housing and the mounting base. Then, the second snap-fit ​​connection structure is snapped onto the first snap-fit ​​connection structure, so that the first snap-fit ​​connection structure supports the second snap-fit ​​connection structure along the opposite direction of the condenser housing and the mounting base. The connection structure allows the atomizer to be installed onto the condenser housing along with the mounting base. Furthermore, the sheet metal connector is attached to the base body, making the connection between the base body and the condenser housing more secure. The operator only needs to detach the second snap-fit ​​connection structure from the first snap-fit ​​connection structure, and then move the mounting base to disengage the second plug-in structure from the first plug-in structure. This allows the condenser heat exchange device to be disassembled, and the mounting base with the atomizer can be removed from the condenser housing. Therefore, the atomizer can be disassembled and assembled without the use of special tools. Thus, the disassembly and assembly steps of the atomizer are simple, which can significantly improve the efficiency of atomizer disassembly and assembly.

[0014] Furthermore, since the first plug-in structure can be inserted into the second plug-in structure during disassembly and assembly, and the first plug-in structure can support the second plug-in structure in the opposite direction of the condenser shell and the mounting base, the disassembly and assembly of the atomizer can be performed relatively easily even when there is only one operator (i.e., no other personnel to help support the atomizer and the mounting base).

[0015] Furthermore, by designing the mounting base as a separate base body and sheet metal connector, the structure used to support the atomizer can be separated from the structure used to install and connect to the condenser housing. This allows the base body or sheet metal connector to be replaced separately when different functional parts need to be replaced, without having to replace the entire mounting base, which helps reduce the maintenance cost of the condenser heat exchanger.

[0016] In one embodiment, the condenser housing includes a housing body having the first inner cavity and the first opening; the condenser housing further includes a first sheet metal connecting plate connected to one side of the housing body, and the first insertion structure is disposed on the first sheet metal connecting plate; and / or, the condenser housing further includes a second sheet metal connecting plate connected to one side of the housing body, and the first snap-fit ​​connection structure is disposed on the second sheet metal connecting plate; and / or,

[0017] The mounting base has a bent portion on one side, which bends toward the condenser housing and is partially located on the outer periphery of the condenser housing. The second snap-fit ​​connection structure is located on the bent portion.

[0018] In one embodiment, of the first plug-in structure and the second plug-in structure, one is a plug hole and the other is a plug connector;

[0019] Of the first and second snap-fit ​​connection structures, one is a snap-fit ​​hook, and the other includes a handle and a buckle. The handle is rotatably mounted on the condenser housing or the mounting base around a first axis. The buckle is rotatably connected to the handle around a second axis, which is located between the first axis and the other end of the handle and is parallel to the first axis. The buckle is detachably snapped onto the snap-fit ​​hook. The handle can be used to tighten and lock the buckle, so that the condenser housing and the mounting base are pressed together.

[0020] In one embodiment, a limiting protrusion is formed on the outer periphery of the top of the base body, the sheet metal connector is provided with a first through hole for the base body to pass through, and the sheet metal connector abuts against the side of the limiting protrusion away from the condenser shell.

[0021] In one embodiment, the sheet metal connector has an arched ring protruding toward the limiting ring, the arched ring surrounding the first through hole, and at least the top of the arched ring abutting against the side of the limiting ring away from the condenser housing.

[0022] In one embodiment, the atomizer is further provided with a power cord for electrical connection to an external power source, and a mounting sleeve for the power cord to pass through is provided on the outer periphery of one side of the base body. The sheet metal connector is further provided with a second through hole communicating with the first through hole, and the second through hole is used to avoid the mounting sleeve.

[0023] In one embodiment, the condenser housing further has a first limiting groove, which surrounds and communicates with the first inner cavity, and the first limiting groove and the first inner cavity together form the first opening; the mounting base further has a second limiting groove, which surrounds and communicates with the second inner cavity, and the second limiting groove and the second inner cavity together form the second opening.

[0024] The condensation heat exchange device also includes a sealing ring, which is disposed in the space formed by the first limiting groove and the second limiting groove. Along the relative direction between the condensation shell and the mounting base, the two opposite sides of the sealing ring abut against the condensation shell and the mounting base respectively.

[0025] In one embodiment, the first groove wall of the first limiting groove is provided with two first protrusions, the first groove wall being located on the side of the sealing ring away from the mounting base, both first protrusions surrounding the first opening, and one first protrusion being spaced apart from the outer periphery of the other first protrusion; or, the sealing ring is provided with two second protrusions on the side facing the condenser housing, both second protrusions surrounding the first opening, and one second protrusion being spaced apart from the outer periphery of the other second protrusion; and / or,

[0026] The second groove wall of the second limiting groove is provided with two third protrusions. The second groove wall is located on the side of the sealing ring away from the condenser housing. Both third protrusions are arranged around the second opening, and one third protrusion is spaced apart from the outer periphery of the other third protrusion. Alternatively, the sealing ring is provided with two fourth protrusions on the side facing the mounting base. Both fourth protrusions are arranged around the second opening, and one fourth protrusion is spaced apart from the outer periphery of the other fourth protrusion.

[0027] In one embodiment, one of the first groove wall and the second groove wall is provided with a positioning post, and the other is provided with a first positioning hole. The sealing ring is provided with a second positioning hole. The positioning post is sequentially inserted into the first positioning hole and the second positioning hole, and the positioning post is located between two protrusions spaced apart along a direction parallel to the first groove wall.

[0028] The second technical problem mentioned above is solved by the following technical solution:

[0029] A gas water heater includes a water heater housing, a condenser heat exchanger, and a condenser heat exchange device as described in the foregoing technical solution. The condenser heat exchanger is at least partially disposed in the internal space of the water heater housing. The condenser housing is connected to the water heater housing, and the side of the first inner cavity opposite to the first opening is connected to the internal space of the condenser housing. The atomizer is capable of atomizing the water condensed at the condenser heat exchanger.

[0030] The gas water heater described in this utility model has the following advantages compared with the prior art:

[0031] By using the aforementioned condensing heat exchanger with high disassembly and assembly efficiency, the disassembly and assembly efficiency of gas water heaters can be improved, and the assembly and maintenance costs of gas water heaters can be reduced. Attached Figure Description

[0032] Figure 1 A three-dimensional structural schematic diagram of the condensation heat exchange device provided in the embodiment of this utility model;

[0033] Figure 2 for Figure 1 A schematic cross-sectional view of the condensing heat exchange device shown in the diagram along one direction;

[0034] Figure 3 for Figure 1 A cross-sectional view of the condensing heat exchanger shown in the diagram along another direction;

[0035] Figure 4 for Figure 3 Enlarged view of point M in the middle;

[0036] Figure 5 for Figure 3 Enlarged view of point N;

[0037] Figure 6 A partial exploded view of the condensation heat exchange device provided in an embodiment of this utility model;

[0038] Figure 7 This is an exploded view of the sealing ring and mounting base provided in an embodiment of the present utility model;

[0039] Figure 8 This is a partial cross-sectional schematic diagram of the condensation heat exchange device provided in an embodiment of the present utility model;

[0040] Label Explanation:

[0041] 100. Condensing heat exchanger;

[0042] 1. Condenser housing; 11. First inner cavity; 110. First opening; 12. First plug-in structure; 13. Housing body; 14. First sheet metal connecting plate; 15. Second sheet metal connecting plate; 16. First limiting groove; 160. First groove wall; 161. First protrusion;

[0043] 2. Mounting base; 21. Second inner cavity; 210. Second opening; 22. Second insertion structure; 23. Bending part; 24. Base body; 240. Limiting ring; 241. Mounting sleeve; 25. Sheet metal connector; 250. First through hole; 251. Arched ring; 252. Second through hole; 26. Second limiting groove; 261. Second groove wall; 262. Third protrusion;

[0044] 3. Atomizer; 31. Power cord;

[0045] 41. First snap-fit ​​connection structure; 42. Second snap-fit ​​connection structure; 43. Snap-fit ​​hook; 44. Handle; 45. Buckle ring; 46. First axis; 47. Second axis;

[0046] 5. Sealing ring; 51. Second protrusion; 52. Fourth protrusion; 53. Second positioning hole;

[0047] 60. Positioning pin; 61. First positioning hole;

[0048] 7. Condensing heat exchanger;

[0049] 8. Neutralization treatment device. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] In the description of this application, it should be understood that the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0052] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] like Figures 1 to 5 As shown, this embodiment proposes a condensation heat exchange device 100, including a condensation shell 1, a mounting base 2, and an atomizer 3. The "bottom" mentioned above refers to the area along... Figures 1 to 3 as well as Figure 6 , Figure 7 The bottom, indicated by the coordinates in the diagram, and the top mentioned earlier, refer to the area along the downward direction. Figures 1 to 3 as well as Figure 6 , Figure 7 The coordinates in the diagram indicate the top in the upward direction.

[0054] By providing a first insertion structure 12 and a first snap-fit ​​connection structure 41 on opposite sides of the first opening 110, and by providing a second insertion structure 22 and a second snap-fit ​​connection structure 42 on opposite sides of the second opening 210, the operator only needs to insert the second insertion structure 22 on one side of the mounting base 2 with the atomizer 3 into the first insertion structure 12, so that the first insertion structure 12 supports the second insertion structure 22 along the opposite direction of the condenser housing 1 and the mounting base 2, and then snap-fit ​​the second snap-fit ​​connection structure 42 into the first snap-fit ​​connection structure. 41, the atomizer 3 can be installed onto the condenser housing 1 along with the mounting base 2; the operator only needs to detach the second snap-fit ​​connection structure 42 from the first snap-fit ​​connection structure 41, and then move the mounting base 2 to drive the second plug-in structure 22 to disengage from the first plug-in structure 12, so as to disassemble the condenser heat exchange device 100 and remove the mounting base 2 with the atomizer 3 from the condenser housing 1. Therefore, the condenser heat exchange device 100 can be disassembled and assembled without the use of special tools. Thus, the disassembly and assembly steps of the condenser heat exchange device 100 are simple and can significantly improve the disassembly and assembly efficiency of the condenser heat exchange device 100.

[0055] Furthermore, since the first plug-in structure 12 can be inserted into the second plug-in structure 22 during disassembly and assembly, the first plug-in structure 12 can support the second plug-in structure 22 in the opposite direction of the condenser housing 1 and the mounting base 2. Therefore, the disassembly and assembly of the condenser heat exchange device 100 can be performed relatively easily when there is only one operator (i.e., when there are no other personnel to help support the atomizer 3 and the mounting base 2).

[0056] Furthermore, by setting the mounting base 2 as a separate base body 24 and sheet metal connector 25, the structure used to support the atomizer 3 can be separated from the structure used to install and connect to the condenser housing 1. Thus, when different functional parts need to be replaced, the base body 24 or the sheet metal connector 25 can be replaced separately without replacing the entire mounting base 2, which helps to reduce the maintenance cost of the condenser heat exchange device 100.

[0057] Please combine Figure 6 As shown, in one embodiment, of the first insertion structure 12 and the second insertion structure 22, one is a insertion hole and the other is a insertion connector, so that the first insertion structure 12 and the second insertion structure 22 can be mated and inserted together, as shown. Figure 4 and Figure 6 As shown, Figure 4 and Figure 6 The diagram exemplarily illustrates the structure of a condensing heat exchanger 100 in which the first insertion structure 12 is an insertion hole and the second insertion structure 22 is a plate-shaped insertion connector.

[0058] It is understood that, in order for the first plug-in structure 12 and the second plug-in structure 22 to be engaged and connected, the first plug-in structure 12 can support the second plug-in structure 22 along the relative direction of the condenser housing 1 and the mounting base 2. The insertion and removal directions of the first plug-in structure 12 and the second plug-in structure 22 need to form an angle with the relative direction of the condenser housing 1 and the mounting base 2. Preferably, the insertion and removal directions of the first plug-in structure 12 and the second plug-in structure 22 can be perpendicular to the relative direction of the condenser housing 1 and the mounting base 2, so that the first plug-in structure 12 can provide more stable support for the second plug-in structure 22 along the relative direction of the condenser housing 1 and the mounting base 2.

[0059] In one embodiment, the condenser housing 1 includes a housing body 13, which has a first inner cavity 11 and a first opening 110. Further, the condenser housing 1 also includes a first sheet metal connecting plate 14, which is connected to one side of the housing body 13. A first insertion structure 12 is disposed on the first sheet metal connecting plate 14. By using the first sheet metal connecting plate 14, which is separate from the housing body 13, the relative position of the first sheet metal connecting plate 14 and the housing body 13 can be set more flexibly. This facilitates ensuring that the position of the first insertion structure 12 meets design requirements, and eliminates the need to thicken the condenser housing 1, making the structure of the condenser housing 1 thinner and lighter. Alternatively, the condenser housing 1 may also include a second sheet metal connecting plate 15. The second sheet metal connecting plate 15 is connected to one side of the housing body 13, and the first snap-fit ​​connecting structure 41 is provided on the second sheet metal connecting plate 15. By using the second sheet metal connecting plate 15, which is separate from the housing body 13, the relative position of the second sheet metal connecting plate 15 and the housing body 13 can be set more flexibly. This helps to ensure that the position of the first snap-fit ​​connecting structure 41 meets the design requirements, and there is no need to thicken the condensing housing 1, so that the structure of the condensing housing 1 is thinner. Alternatively, the condensing housing 1 may also include the first sheet metal connecting plate 14 and the second sheet metal connecting plate 15 at the same time, which helps to ensure that the positions of the first plug-in structure 12 and the first snap-fit ​​connecting structure 41 meet the design requirements, and makes the structure of the condensing housing 1 thinner.

[0060] Furthermore, by setting separate first sheet metal connecting plates 14 and / or second sheet metal connecting plates 15, the first plug-in structure 12 and the first snap-fit ​​connecting structure 41 can be separated from the housing body 13. This allows the housing body 13, the first sheet metal connecting plate 14, or the second sheet metal connecting plate 15 to be replaced separately when different functional components need to be replaced, without having to replace the entire condenser housing 1. This helps reduce the maintenance cost of the condenser heat exchanger 100.

[0061] It is worth mentioning that the sheet metal connector 25, the first sheet metal connecting plate 14, and the second sheet metal connecting plate 15 are all sheet metal parts. The base body 24 and the condenser housing 1 are fixedly installed through sheet metal parts, which enhances the structural strength of the base body 24 and the condenser housing 1 and improves the reliability of the sealing connection between the base body 24 and the condenser housing 1. Please refer to [the document for further details]. Figures 5 to 7 In one embodiment, a bending portion 23 is provided on one side of the mounting base 2. The bending portion 23 bends toward the condenser housing 1 and is partially located on the outer periphery of the condenser housing 1. The second snap-fit ​​connection structure 42 is provided on the bending portion 23, so that the second snap-fit ​​connection structure 42 can be brought closer to the outer periphery of the condenser housing 1 through the bending portion 23, so as to be closer to the first snap-fit ​​connection structure 41 provided on the condenser housing 1, thereby making the relative position of the second snap-fit ​​connection structure 42 and the first snap-fit ​​connection structure 41 more reasonable.

[0062] In one embodiment, of the first snap-fit ​​connection structure 41 and the second snap-fit ​​connection structure 42, one is a snap-fit ​​hook 43, and the other includes a handle 44 and a retaining ring 45. The handle 44 is rotatably mounted on the condenser housing 1 or the mounting base 2 around the first axis 46 (that is, when the first snap-fit ​​connection structure 41 includes the handle 44 and the retaining ring 45, the handle 44 is rotatably connected to the condenser housing 1 around the first axis 46; when the second snap-fit ​​connection structure 42 includes the handle 44 and the retaining ring 45, the handle 44 is rotatably connected to the mounting base 2 around the first axis 46). The retaining ring 45 is rotatably connected to the handle 44 around the second axis 47, and the second axis 47 is parallel to the first axis 46. The retaining ring 45 is detachably snap-fit ​​connected to the handle 44. The latch hook 43 and handle 44 can be rotated around the first axis 46 by the operator to tighten and lock the buckle 45, so that the condenser housing 1 and the mounting base 2 are pressed together. At this time, the second axis 47 is located on the side of the first axis 46 away from the latch hook 43. Thus, on the one hand, the connection and disassembly of the first latch connection structure 41 and the second latch connection structure 42 are simple. On the other hand, when the first latch connection structure 41 and the second latch connection structure 42 are latched together, they can apply a large force to the condenser housing 1 and the mounting base 2, which is conducive to better sealing at the abutment of the condenser housing 1 and the mounting base 2, thereby avoiding water and air leakage at the connection between the condenser housing 1 and the mounting base 2.

[0063] When the mounting base 2 has a bent portion 23 on one side as described in the aforementioned technical solution, it is understood that when the second snap-fit ​​connection structure 42 includes a handle 44 and a buckle 45, the handle 44 is rotatably connected to the bent portion 23 around the first axis 46.

[0064] In one embodiment, a limiting protrusion 240 is formed on the outer periphery of the top of the base body 24. The sheet metal connector 25 is provided with a first through hole 250 for the base body 24 to pass through. The sheet metal connector 25 abuts against the side of the limiting protrusion 240 away from the condenser housing 1. Thus, when the sheet metal connector 25 is connected to the condenser housing 1 through the second insertion structure 22 and the second snap-fit ​​connection structure 42, the sheet metal connector 25 can be pressed against the limiting protrusion 240 to press the side of the limiting protrusion 240 away from the sheet metal connector 25 against the condenser housing 1, thereby connecting the base body 24 to the condenser housing 1 and ensuring a good connection between the base body 24 and the condenser housing 1.

[0065] When the mounting base 2 has a bent portion 23 on one side as described in the aforementioned technical solution, it is understood that the sheet metal connector 25 includes the bent portion 23.

[0066] In one embodiment, the sheet metal connector 25 has an arched protrusion 251 protruding towards the limiting protrusion 240. The arched protrusion 251 surrounds the first through hole 250, and at least the top end of the arched protrusion 251 abuts against the side of the limiting protrusion 240 away from the condenser housing 1. Since the arched protrusion 251 has a certain elasticity, this arrangement allows the arched protrusion 251 to generate an upward pressing force through elastic deformation when the sheet metal connector 25 is connected to the condenser housing 1 through the second insertion structure 22 and the second snap-fit ​​connection structure 42. This keeps the condenser housing 1 and the base body 24 sealed, which helps to maintain a stable abutment connection between the condenser housing 1 and the base body 24. Specifically, the arched protrusion 251 has an arched cross-section obtained by a plane perpendicular to the extension direction of the arched protrusion 251.

[0067] In one embodiment, the atomizer 3 is further provided with a power cord 31 for electrical connection to an external power source, and a mounting sleeve 241 for the power cord 31 to pass through is provided on one side of the outer periphery of the base body 24. The sheet metal connector 25 is further provided with a second through hole 252 communicating with the first through hole 250. The second through hole 252 is used to avoid the mounting sleeve 241. Specifically, the second through hole 252 is used to allow the mounting sleeve 241 to pass through when the sheet metal connector 25 is fitted onto the outer periphery of the base body 24. The second through hole 252 can also be used to avoid the mounting sleeve 241 when it abuts against the limiting protrusion 240.

[0068] When the sheet metal connector 25 has an arched protrusion 251 protruding toward the limiting protrusion 240 as described in the aforementioned technical solution, the second through hole 252 can also penetrate part of the arched protrusion 251.

[0069] In one embodiment, the condenser housing 1 further has a first limiting groove 16, which surrounds and communicates with the first inner cavity 11, and the first limiting groove 16 and the first inner cavity 11 together form a first opening 110. The mounting base 2 further has a second limiting groove 26, which surrounds and communicates with the second inner cavity 21, and the second limiting groove 26 and the second inner cavity 21 together form a second opening 210. The condenser heat exchange device 100 also includes a sealing ring 5, which is disposed in the space formed by the first limiting groove 16 and the second limiting groove 26. Along the relative directions of the condenser housing 1 and the mounting base 2, the two opposite sides of the sealing ring 5 are... The seal ring 5 is pressed against the condenser housing 1 and the mounting base 2 respectively. On the one hand, the first limiting groove 16 and the second limiting groove 26 can jointly limit the position of the sealing ring 5, making the relative position of the condenser housing 1, the sealing ring 5 and the mounting base 2 more stable. This can improve the assembly accuracy and connection stability of the condenser housing 1, the sealing ring 5 and the mounting base 2. On the other hand, the sealing ring 5 can be used to clamp the condenser housing 1 and the mounting base 2. After the sealing ring 5 is connected, the sealing performance of the connection between the condenser housing 1 and the mounting base 2 is better, so as to further avoid the problem of water leakage and air leakage at the connection between the condenser housing 1 and the mounting base 2.

[0070] It is understandable that when a limiting ring 240 is formed on the outer periphery of one end of the base body 24 where the second opening 210 is located, as described in the aforementioned technical solution, the second limiting groove 26 can be at least partially provided on the limiting ring 240, thereby making the structure of the base body 24 more compact.

[0071] In one embodiment, such as Figure 8 As shown, the first groove wall 160 of the first limiting groove 16 is provided with two first protrusions 161. The first groove wall 160 is located on the side of the sealing ring 5 away from the mounting base 2. Both first protrusions 161 are arranged around the first opening 110, and one first protrusion 161 is spaced apart from the outer periphery of the other first protrusion 161. This can, on the one hand, further extend the length of the sealing connection surface from the inner side to the outer side of the sealing ring 5 when it abuts against the first groove wall 160, thereby further improving the sealing performance between the sealing ring 5 and the condenser housing 1. On the other hand, by setting two spaced first protrusions 161, a position with stronger abutment tightness can be formed, so as to achieve a two-stage seal from the inner ring to the outer ring, with better sealing performance and a smaller number of additional first protrusions 161. Or, as Figure 6 and Figure 7As shown, the sealing ring 5 has two second protrusions 51 on the side facing the condenser housing 1. Both second protrusions 51 are arranged around the first opening 110, and one second protrusion 51 is spaced apart from the outer periphery of the other second protrusion 51. This allows for better local sealing performance at the contact point between the second protrusion 51 and the first groove wall 160, thus achieving a two-stage seal from the inner ring to the outer ring. The sealing performance is good, and the number of additional second protrusions 51 is small.

[0072] In one embodiment, such as Figure 6 and Figure 7 As shown, the second groove wall 261 of the second limiting groove 26 is provided with two third protrusions 262. The second groove wall 261 is located on the side of the sealing ring 5 away from the condenser housing 1. Both third protrusions 262 are arranged around the second opening 210, and one third protrusion 262 is spaced apart from the outer periphery of the other third protrusion 262. This can, on the one hand, further extend the length of the sealing connection surface from the inner side to the outer side of the sealing ring 5 when it abuts against the second groove wall 261, thereby further improving the sealing performance between the sealing ring 5 and the condenser housing 1. On the other hand, by setting two spaced third protrusions 262, a position with stronger abutment tightness can be formed between the two rings, so as to achieve a two-stage seal from the inner ring to the outer ring, with better sealing performance and a smaller number of added third protrusions 262. Figure 8 As shown, the sealing ring 5 has two fourth protrusions 52 on the side facing the mounting base 2. Both fourth protrusions 52 are arranged around the second opening 210, and one fourth protrusion 52 is spaced apart from the outer periphery of the other fourth protrusion 52. This allows for better local sealing performance at the contact point between the fourth protrusion 52 and the first groove wall 160, thus achieving a two-stage seal from the inner ring to the outer ring. The sealing performance is good, and the number of additional fourth protrusions 52 is relatively small.

[0073] In one embodiment, while the first groove wall 160 of the first limiting groove 16 is provided with two first protrusions 161 or the sealing ring 5 is provided with two second protrusions 51 on the side facing the condenser housing 1, the second groove wall 261 of the second limiting groove 26 is provided with two third protrusions 262 or the sealing ring 5 is provided with two fourth protrusions 52 on the side facing the mounting base 2, so that the sealing connection performance between the sealing ring 5 and the first groove wall 160 and the second groove wall 261 is good.

[0074] Please combine Figure 6 and Figure 7As shown, in one embodiment, one of the first tank wall 160 and the second tank wall 261 is provided with a positioning post 60, and the other is provided with a first positioning hole 61. The sealing ring 5 is provided with a second positioning hole 53. The positioning post 60 is sequentially inserted into the first positioning hole 61 and the second positioning hole 53, thereby limiting the relative positions of the condenser shell 1, the sealing ring 5, and the mounting base 2 through the cooperation of the positioning post 60 with the first positioning hole 61 and the second positioning hole 53, thereby improving the assembly accuracy of the condenser heat exchanger 100. Figure 6 and Figure 7 The diagram exemplarily illustrates the structure of a condensation heat exchanger 100 with a first positioning hole 61 on the first tank wall 160 and a positioning post 60 on the second tank wall 261.

[0075] When, as described in the aforementioned technical solution, the first groove wall 160 is provided with a first protrusion 161 or the sealing ring 5 is provided with a second protrusion 51, and / or the second groove wall 261 is provided with a third protrusion 262 or the sealing ring 5 is provided with a fourth protrusion 52, in one embodiment, the positioning post 60 is located between two protrusions spaced apart along a direction parallel to the first groove wall 160. This makes it less likely for the positioning post 60 to come into contact with leaked water vapor, reducing the possibility of water accumulation between the positioning post 60 and the first positioning hole 61 and the second positioning hole 53. On the other hand, it also makes the positioning post 60 and the protrusions more compact while ensuring that the positioning post 60 does not interfere with each other.

[0076] For example, when the first groove wall 160 is provided with two first protrusions 161, the positioning post 60 is located between the two first protrusions 161; when the sealing ring 5 is provided with two second protrusions 51, the positioning post 60 is located between the two second protrusions 51; when the second groove wall 261 is provided with two third protrusions 262, the positioning post 60 is located between the two third protrusions 262; and when the sealing ring 5 is provided with two fourth protrusions 52, the positioning post 60 is located between the two fourth protrusions 52.

[0077] In one embodiment, the condensing heat exchange device 100 further includes a condensing heat exchanger 7 disposed in the second inner cavity 21 for cooling the flue gas and condensing at least a portion of the water vapor in the flue gas.

[0078] Since the water formed by the cooling and condensation of flue gas is usually acidic, in one embodiment, the condensation heat exchange device 100 further includes a neutralization treatment device 8. The neutralization treatment device 8 is disposed inside the condensation shell 1, and the interior of the neutralization treatment device 8 is connected to the interior of the atomizer 3. The neutralization treatment device 8 can receive the water condensed at the condensation heat exchanger 7, perform acid-base neutralization treatment on the condensed water, and then transport the neutralized water to the atomizer 3 for atomization treatment.

[0079] This embodiment also proposes a gas water heater, including: a water heater shell, a burner, and a condensing heat exchange device 100 as described in the foregoing technical solution (see [link to previous document]). Figure 2 The burner is located inside the water heater housing, and the interior of the water heater housing is connected to the first inner cavity 11 of the condensing heat exchange device 100 (see [link to relevant documentation]). Figure 2 By connecting the aforementioned high-efficiency condensing heat exchange device 100, the disassembly and assembly efficiency of the gas water heater can be improved, and the assembly and maintenance costs of the gas water heater can be reduced.

[0080] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0081] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A condensing heat exchanger apparatus, characterized by, include: A condenser housing (1) has a first inner cavity (11) with a first opening (110) at the bottom of the first inner cavity (11). The condenser housing (1) is provided with a first plug-in structure (12) and a first snap-fit ​​connection structure (41) on two opposite sides of the first opening (110). Mounting base (2), the mounting base (2) includes a base body (24) and a sheet metal connector (25), the base body (24) has a second inner cavity (21), the top of the second inner cavity (21) forms a second opening (210), the second opening (210) is connected to the first opening (110), the sheet metal connector (25) is connected to the base body (24), the sheet metal connector (25) is provided with a second insertion structure (22) and a second snap-fit ​​connection structure (42) on two opposite sides of the second opening (210); the second insertion structure (22) is detachably inserted into the first insertion structure (12), and the first insertion structure (12) supports the second insertion structure (22), the second snap-fit ​​connection structure (42) is detachably snap-fit ​​connected to the first snap-fit ​​connection structure (41), so that the base body (24) is fixedly installed on the condenser shell (1) and the first opening (110) is sealed; and, Atomizer (3), which is at least partially disposed in the second inner cavity (21).

2. The condensing heat exchanger according to claim 1, wherein The condenser housing (1) includes a housing body (13), the housing body (13) having the first inner cavity (11) and the first opening (110); the condenser housing (1) also includes a first sheet metal connecting plate (14), the first sheet metal connecting plate (14) being connected to one side of the housing body (13), and the first plug-in structure (12) being disposed on the first sheet metal connecting plate (14), and / or, the condenser housing (1) also includes a second sheet metal connecting plate (15), the second sheet metal connecting plate (15) being connected to one side of the housing body (13), and the first snap-fit ​​connection structure (41) being disposed on the second sheet metal connecting plate (15); and / or, The mounting base (2) has a bending part (23) on one side. The bending part (23) bends toward the condenser shell (1) and is partially located on the outer periphery of the condenser shell (1). The second snap-fit ​​connection structure (42) is provided on the bending part (23).

3. The condensing heat exchanger of claim 2, wherein Of the first plug-in structure (12) and the second plug-in structure (22), one is a plug-in hole and the other is a plug-in connector; Of the first snap-fit ​​connection structure (41) and the second snap-fit ​​connection structure (42), one is a snap-fit ​​hook (43), and the other includes a handle (44) and a buckle (45). The handle (44) is rotatably mounted on the condenser housing (1) or the mounting base (2) around the first axis (46). The buckle (45) is rotatably connected to the handle (44) around the second axis (47). The second axis (47) is spaced apart from and parallel to the first axis (46). The buckle (45) is detachably snapped to the snap-fit ​​hook (43). The handle (44) can be used to tighten and lock the buckle (45) so that the condenser housing (1) and the mounting base (2) are pressed together. At this time, the second axis (47) is located on the side of the first axis (46) away from the snap-fit ​​hook (43).

4. The condensing heat exchanger according to any one of claims 1 to 3, characterized in that, The outer periphery of the top of the base body (24) forms a limiting protrusion (240), the sheet metal connector (25) is provided with a first through hole (250) for the base body (24) to pass through, and the sheet metal connector (25) abuts against the side of the limiting protrusion (240) away from the condenser shell (1).

5. The condensing heat exchanger of claim 4, wherein The sheet metal connector (25) has an arched protrusion (251) protruding toward the limiting protrusion (240), the arched protrusion (251) surrounding the first through hole (250), and at least the top of the arched protrusion (251) abuts against the side of the limiting protrusion (240) away from the condenser housing (1).

6. The condensing heat exchanger of claim 5, wherein The atomizer (3) is also provided with a power cord (31) for electrical connection to an external power source. The outer periphery of one side of the base body (24) is also provided with an installation sleeve (241) for the power cord (31) to pass through. The sheet metal connector (25) is also provided with a second through hole (252) communicating with the first through hole (250). The second through hole (252) is used to avoid the installation sleeve (241).

7. The condensing heat exchanger according to any one of claims 1 to 3, wherein The condenser housing (1) also has a first limiting groove (16), which surrounds and communicates with the first inner cavity (11), and the first limiting groove (16) and the first inner cavity (11) together form the first opening (110). The mounting base (2) also has a second limiting groove (26), which surrounds and communicates with the second inner cavity (21), and the second limiting groove (26) and the second inner cavity (21) together form the second opening (210). The condensing heat exchange device (100) also includes a sealing ring (5), which is disposed in the space formed by the first limiting groove (16) and the second limiting groove (26). Along the relative direction of the condensing shell (1) and the mounting base (2), the two opposite sides of the sealing ring (5) abut against the condensing shell (1) and the mounting base (2) respectively.

8. The condensing heat exchanger of claim 7, wherein The first groove wall (160) of the first limiting groove (16) is provided with two first protrusions (161). The first groove wall (160) is located on the side of the sealing ring (5) away from the mounting base (2). The two first protrusions (161) are arranged around the first opening (110), and one of the first protrusions (161) is spaced apart from the outer periphery of the other first protrusion (161). Alternatively, the sealing ring (5) is provided with two second protrusions (51) on the side facing the condenser shell (1). The two second protrusions (51) are arranged around the first opening (110), and one of the second protrusions (51) is spaced apart from the outer periphery of the other second protrusion (51). And / or, The second groove wall (261) of the second limiting groove (26) is provided with two third protrusions (262). The second groove wall (261) is located on the side of the sealing ring (5) away from the condenser shell (1). The two third protrusions (262) are arranged around the second opening (210), and one of the third protrusions (262) is spaced apart from the outer periphery of the other third protrusion (262). Alternatively, the sealing ring (5) is provided with two fourth protrusions (52) on the side facing the mounting base (2). The two fourth protrusions (52) are arranged around the second opening (210), and one of the fourth protrusions (52) is spaced apart from the outer periphery of the other fourth protrusion (52).

9. The condensing heat exchanger of claim 8, wherein One of the first groove wall (160) and the second groove wall (261) is provided with a positioning post (60), and the other is provided with a first positioning hole (61). The sealing ring (5) is provided with a second positioning hole (53). The positioning post (60) passes through the second positioning hole and is inserted into the first positioning hole (61). The positioning post (60) is located between two protrusions spaced apart along a direction parallel to the first groove wall (160).

10. A gas water heater, characterised by include: The water heater housing, the burner, and the condensing heat exchange device (100) as described in any one of claims 1-9, wherein the burner is disposed inside the water heater housing and the interior of the water heater housing is connected to the first inner cavity (11) of the condensing heat exchange device (100).

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