Gas water heating device

Abstract

The utility model discloses a kind of gas hot water devices, it is related to water heating equipment technical field, comprising: condensing heat exchanger, condensing heat exchanger has heat exchange chamber and the condensing heat exchange pipeline in heat exchange chamber;Atomization component, atomization component includes: the shell formed with atomization cavity, atomization cavity is communicated with heat exchange chamber, to make condensate in heat exchange chamber flow into atomization cavity, first opening is set in the bottom of shell;Plugging piece, plugging piece is detachably installed in atomization cavity lower part and with first opening position corresponding to seal first opening;Atomization sheet, atomization sheet is set in the side of plugging piece towards atomization cavity, and with first opening corresponding;Control panel, control panel is used to drive atomization sheet to operate, and with atomization sheet detachably connected;Smoke pipe, atomization chamber outlet, heat exchange chamber outlet and smoke pipe are communicated. The present application can solve the problem of inconvenient replacement after atomization sheet failure.

Description

Technical Field

[0001] This utility model relates to the technical field of water heating equipment, and in particular to a gas-fired hot water device. Background Technology

[0002] In the technological development of gas water heaters, improving energy conversion efficiency has always been one of the core research and development directions in the industry. To achieve this goal, existing technologies generally add a condensing heat exchanger downstream of the main heat exchanger in the gas water heater. Utilizing the heat exchange between the condensing heat exchanger and the flue gas, heat from the flue gas is further recovered, thereby effectively improving the overall energy utilization efficiency of the gas water heater. When water flows through the condensing heat exchanger and exchanges heat with the flue gas, water vapor in the flue gas will precipitate due to cooling, forming condensate on the surface of the heat exchange tubes of the condensing heat exchanger. If this condensate is not properly treated, it may not only affect the heat exchange performance of the condensing heat exchanger but also cause corrosion or damage to other internal components of the gas water heater due to condensate accumulation. Therefore, effective condensate drainage is a key aspect of gas water heater design. To avoid the need for an external drain pipe and reduce the complexity of gas water heater installation, existing technologies typically incorporate a condensate atomizing device inside the gas water heater. This device atomizes the condensate, allowing it to be discharged along with the flue gas, eliminating the need for additional drainage pipes and greatly optimizing the structural design and ease of use of gas water heaters.

[0003] Existing condensate atomizing devices generally include a housing with an atomizing chamber, the bottom of which holds condensate collected from the surface of the heat exchange tubes of a condenser heat exchanger. The atomizing plate and control board are integrated inside the housing. The core function of the atomizing plate is to convert the condensate in the atomizing chamber into a mist, while the control board provides the necessary power and controls its operation to ensure stable and reliable condensate atomization. However, in actual use, the atomizing plate, as the core component of the condensate atomizing device, is prone to failure, causing the device to malfunction. When the atomizing plate needs replacement, it is difficult for repair personnel to directly disassemble and replace it on the gas water heater. The disassembly process is cumbersome, consuming significant repair time and labor costs, and may also cause unnecessary damage to other internal components of the gas water heater. In practice, repair personnel usually choose to replace the entire condensate atomizing device to quickly restore the gas water heater to normal operation. However, this method of replacing the entire device results in users having to bear the cost of purchasing the entire condensate atomizing unit, not just the cost of the faulty atomizing plate. This significantly increases users' maintenance expenses, creating an unnecessary financial burden and hindering product marketing and user experience improvement. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a gas-fired water heater that can solve the problem of inconvenience in replacing the atomizing plate after it fails, thereby reducing the maintenance cost when the atomizing plate fails.

[0005] The specific technical solution of this utility model embodiment is as follows:

[0006] A gas-fired water heating device, the gas-fired water heating device comprising:

[0007] A condensing heat exchanger having a heat exchange chamber and condensing heat exchange piping located in the heat exchange chamber;

[0008] An atomizing assembly includes: a housing having an atomizing chamber connected to a heat exchange chamber to allow condensate from the heat exchange chamber to flow into the atomizing chamber; a first opening at the bottom of the housing; a sealing member detachably mounted on the housing at the lower part of the atomizing chamber and corresponding to the first opening to seal it; an atomizing plate disposed on the side of the sealing member facing the atomizing chamber and corresponding to the first opening; and a control board for driving the atomizing plate and detachably connected to it.

[0009] The exhaust pipe is connected to the outlet of the atomizing chamber and the outlet of the heat exchange chamber.

[0010] Preferably, the gas-fired hot water device includes:

[0011] A combustion device for providing thermal energy;

[0012] The main heat exchanger is located downstream of the combustion device along the flue gas flow direction, and the condensing heat exchanger is located downstream of the main heat exchanger along the flue gas flow direction. The main heat exchange pipeline of the main heat exchanger and the condensing heat exchange pipeline of the condensing heat exchanger are connected. At least part of the water flowing into the gas-fired hot water device flows sequentially through the condensing heat exchange pipeline of the condensing heat exchanger and the main heat exchange pipeline of the main heat exchanger.

[0013] A flow guide pipe is used to connect the flue gas flowing out of the main heat exchanger with the atomizing chamber, and the flue gas flowing out of the main heat exchanger flows into the atomizing chamber after passing through the flow guide pipe;

[0014] An outlet pipe is provided, which connects the outlet of the atomizing chamber to the exhaust pipe.

[0015] Preferably, a first sealing element is provided between the sealing element and the housing.

[0016] Preferably, the first seal is annular, and the inner wall of the first seal has an embedding groove extending circumferentially, with the edge of the atomizing sheet disposed around the embedding groove.

[0017] Preferably, the sealing member abuts against the lower end face of the first seal, such that the upper end face of the first seal abuts against the lower surface of the edge of the housing forming the first opening.

[0018] Preferably, in the vertical direction, the position of the atomizing plate corresponds to the position of the first opening.

[0019] Preferably, the sealing member has heat dissipation holes, and the positions of the heat dissipation holes correspond to the area enclosed by the inner sidewall of the first sealing member.

[0020] Preferably, the lower surface of the bottom of the housing has a recessed limiting portion, and the first sealing member is disposed within the limiting portion.

[0021] Preferably, the lower surface of the bottom of the housing has a first positioning part, and the first sealing member has a second positioning part corresponding to the first positioning part, so as to realize the circumferential positioning of the first sealing member.

[0022] Preferably, the atomizing assembly further includes: at least one fixing member, the fixing member passing through the sealing member and connected to the housing to fix the sealing member to the housing, the fixing member including at least one of the following: screw, bolt, stud;

[0023] or,

[0024] The sealing component is detachably connected to the housing via a snap-fit ​​structure.

[0025] Preferably, the bottom of the housing has a recess, and the first opening is located at the bottom of the recess.

[0026] Preferably, a second opening is provided at the bottom of the housing;

[0027] The atomizing component further includes a liquid level detection component, which is inserted into the atomizing chamber through the second opening; the liquid level detection component is sealed to the housing.

[0028] Preferably, the liquid level detection component is detachably connected to the control board.

[0029] Preferably, the housing includes an upper housing and a base, the first opening is located at the bottom of the base, the bottom of the upper housing is open, and the bottom of the upper housing is connected to the upper part of the base to form the atomizing chamber.

[0030] Preferably, the upper housing is made of metal and the base is made of plastic.

[0031] Preferably, the upper shell and the condenser heat exchanger form an integral structure.

[0032] Preferably, a second seal is provided between the upper housing and the base.

[0033] Preferably, the control board and the atomizing plate are connected by a wire, and the control board is separately disposed from the housing.

[0034] Preferably, the wire is detachably connected to the control board, or the wire is detachably connected to the atomizing plate.

[0035] Preferably, a first sealing element is provided between the sealing element and the housing. The first sealing element is annular, and the inner sidewall of the first sealing element has an embedding groove extending circumferentially. The edge of the atomizing sheet is disposed in the embedding groove around its perimeter.

[0036] The first seal has a connecting channel that connects the inner sidewall and the outer sidewall. The wire passes through the connecting channel to connect with the atomizing plate. The connection between the connecting channel and the inner sidewall is located below the atomizing plate.

[0037] Preferably, the sealing member has a sidewall that covers the outer sidewall of the first sealing member, and the sidewall of the sealing member has a notch that corresponds to the position of the connecting channel, so that the wire passes through the notch and the connecting channel is connected to the atomizing plate.

[0038] The technical solution of this utility model has the following significant beneficial effects:

[0039] In this application, when the flue gas flows through the heat exchange chamber of the condenser heat exchanger, it exchanges heat with the condenser heat exchange pipes therein. Cold water to be heated flows through the condenser heat exchange pipes, and water vapor in the flue gas precipitates out upon encountering the cold, thus forming condensate on the surface of the condenser heat exchange pipes. After the condensate drips into the heat exchange chamber, it flows into the atomizing chamber. The atomizing plate, through a first opening, can contact the condensate in the atomizing chamber. The control board drives the atomizing plate to operate, thereby atomizing the condensate in the atomizing chamber into water mist. The water mist and the flue gas that has exchanged heat with the condenser heat exchange pipes are both discharged through the exhaust pipe. When the atomizing plate malfunctions, since the atomizing plate is located on the side of the sealing member facing the atomizing chamber and corresponds to the first opening, and the sealing member is a detachable housing installed at the bottom of the atomizing chamber and corresponds to the position of the first opening to seal it, and the control board is detachably connected to the atomizing plate, the atomizing plate installed on the sealing member can be replaced simply by removing the sealing member from the housing; if the control board malfunctions, it can also be directly disassembled from the atomizing plate for replacement. This greatly improves the convenience of replacing the atomizing plate or control board when it malfunctions, and only the atomizing plate or control board needs to be replaced, reducing the maintenance cost when the atomizing plate or control board fails. Attached Figure Description

[0040] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0041] Figure 1 This is a schematic diagram of the gas-fired water heater in an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of the structure of the condenser heat exchanger, atomizing component and flue pipe in the embodiment of this utility model;

[0043] Figure 3 This is an exploded view of the atomizing component in an embodiment of this utility model;

[0044] Figure 4 This is a partial cross-sectional view of the atomizing component in an embodiment of this utility model;

[0045] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0046] Figure 6This is a bottom view of the atomizing component in an embodiment of the present invention;

[0047] Figure 7 This is a schematic diagram of the sealing component in an embodiment of the present invention.

[0048] The reference numerals in the above figures are as follows:

[0049] 1. Condensing heat exchanger; 11. Heat exchange chamber; 12. Condensing heat exchange pipeline; 2. Exhaust pipe; 3. Atomizing assembly; 31. Shell; 311. First opening; 312. Limiting part; 313. First positioning part; 314. Recessed part; 315. Second opening; 316. Upper shell; 317. Base; 318. Second seal; 32. Sealing part; 321. Heat dissipation hole; 322. Notch; 33. Atomizing plate; 34. First seal; 341. Embedded groove; 342. Second positioning part; 343. Connecting channel; 35. Fixing part; 36. Liquid level detection assembly; 4. Combustion device; 5. Main heat exchanger; 6. Guide pipeline; 7. Outlet pipeline; 8. Fan. Detailed Implementation

[0050] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are for illustrative purposes only and should not be construed as limiting the utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model.

[0051] In order to solve the problem of inconvenience in replacing the atomizing plate 33 after it malfunctions, and thus reduce the maintenance cost when the atomizing plate 33 fails, this application proposes a gas-fired water heating device. Figure 1 This is a schematic diagram of the gas-fired water heater in an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of the condenser heat exchanger, atomizing component 3, and exhaust pipe 2 in an embodiment of this utility model. Figure 3 This is an exploded view of the atomizing component in an embodiment of this utility model. Figure 4 This is a partial cross-sectional view of the atomizing component in an embodiment of the present invention. Figure 5 for Figure 4 An enlarged diagram of point A in the middle, as shown below. Figures 1 to 5As shown, the gas-fired water heater may include: a condenser heat exchanger 1, which has a heat exchange chamber 11 and a condenser heat exchange pipe 12 located in the heat exchange chamber 11; an atomizing assembly 3, which includes: a shell 31 forming an atomizing chamber, the atomizing chamber communicating with the heat exchange chamber 11 to allow condensate in the heat exchange chamber 11 to flow into the atomizing chamber, and a first opening 311 at the bottom of the shell 31; a sealing member 32, which is detachably installed on the shell 31 at the lower part of the atomizing chamber and corresponds to the position of the first opening 311 to seal the first opening 311; an atomizing plate 33, which is disposed on the side of the sealing member 32 facing the atomizing chamber and corresponds to the first opening 311; a control board, which is used to drive the atomizing plate 33 to operate and is detachably connected to the atomizing plate 33; and a flue pipe 2, which communicates with the outlet of the atomizing chamber and the outlet of the heat exchange chamber 11.

[0052] In this application, when the flue gas flows through the heat exchange chamber 11 of the condenser heat exchanger 1, it exchanges heat with the condenser heat exchange pipe 12 therein. Cold water to be heated flows through the condenser heat exchange pipe 12. Water vapor in the flue gas precipitates due to the cooling, and condensate forms on the surface of the condenser heat exchange pipe 12. After the condensate drips into the heat exchange chamber 11, it flows into the atomizing chamber. The atomizing plate 33 can contact the condensate in the atomizing chamber through the first opening 311. The control board drives the atomizing plate 33 to operate, thereby atomizing the condensate in the atomizing chamber into water mist. The water mist and the flue gas that has exchanged heat with the condenser heat exchange pipe 12 are both discharged through the exhaust pipe 2. When the atomizing plate 33 malfunctions, since it is located on the side of the sealing member 32 facing the atomizing chamber and corresponds to the first opening 311, and the sealing member 32 is detachably installed on the housing 31 at the bottom of the atomizing chamber and corresponds to the position of the first opening 311 to seal it, and the control board is detachably connected to the atomizing plate 33, the atomizing plate 33 installed on the sealing member 32 can be replaced simply by removing the sealing member 32 from the housing 31. If the control board malfunctions, it can also be directly disassembled from the atomizing plate 33 for replacement. This greatly improves the convenience of replacing the atomizing plate 33 or the control board when they malfunction, and only the atomizing plate 33 or the control board needs to be replaced, reducing the maintenance cost when the atomizing plate 33 or the control board malfunctions.

[0053] As a feasible option, such as Figure 1 and Figure 2As shown, the gas-fired water heater may include: a combustion device 4, which provides heat energy; a main heat exchanger 5, which is located downstream of the combustion device 4 along the flue gas flow direction, and a condensing heat exchanger 1, which is located downstream of the main heat exchanger 5 along the flue gas flow direction, with the main heat exchange pipe of the main heat exchanger 5 and the condensing heat exchange pipe 12 of the condensing heat exchanger 1 connected, and at least part of the water flowing into the gas-fired water heater flows sequentially through the condensing heat exchange pipe 12 of the condensing heat exchanger 1 and the main heat exchange pipe of the main heat exchanger 5; a guide pipe 6, which connects the flue gas flowing out of the main heat exchanger 5 to the atomizing chamber, and a portion of the flue gas flowing out of the main heat exchanger 5 flows into the atomizing chamber after passing through the guide pipe 6; and an outlet pipe 7, which connects the outlet of the atomizing chamber to the exhaust pipe 2. The guide pipe 6 can introduce at least a portion of the flue gas after the main heat exchanger 5 into the atomizing chamber of the atomizing component 3, thereby quickly carrying away the water mist generated by the atomizing plate 33 in the atomizing chamber and discharging it through the outlet pipe 7 from the exhaust pipe 2. This improves the efficiency of the atomizing plate 33 in atomizing condensate. The gas-fired water heater may include a fan 8. The fan 8 is used to drive the high-temperature flue gas generated by the combustion device 4 to flow sequentially through the main heat exchanger 5 and the condensing heat exchanger 1. For example, along the flue gas flow direction, the fan 8 is located between the main heat exchanger 5 and the condensing heat exchanger 1. When the fan 8 is in operation, the flue gas generated by the combustion device 4 flows sequentially through the main heat exchanger 5, the fan 8, and the condensing heat exchanger 1. After heat exchange in the main heat exchanger 5, the flue gas is input into the condensing heat exchanger 1 for heat exchange under the action of the fan 8, thereby heating the water flowing through the condensing heat exchanger 1. When the fan 8 is positioned between the main heat exchanger 5 and the condenser heat exchanger 1, the inlet of the guide pipe 6 is located downstream of the impeller of the fan 8 to guide the flue gas exiting the impeller into the atomization chamber of the atomization assembly 3. Alternatively, the inlet of the guide pipe 6 can be located downstream of the outlet of the fan 8 or at the outlet of the fan 8. The guide pipe 6 passes at least partially through the heat exchange chamber 11 of the condenser heat exchanger 1.

[0054] The control board and the atomizing plate 33 can be connected by a wire, and the control board is separately disposed from the housing 31. To achieve a detachable connection between the control board and the atomizing plate 33, it is feasible to detachably connect the wire to the control board, or detachably connect the wire to the atomizing plate 33. For example, the end of the wire can be connected to the control board or the atomizing plate 33 via a connector, thereby achieving a detachable connection.

[0055] In order to allow the sealing element 32 to be detachably installed on the housing 31 at the lower part of the atomizing chamber and to correspond to the position of the first opening 311 so as to effectively seal the first opening 311 and prevent leakage, such as Figure 3 and Figure 4 As shown, a first sealing element 34 may be provided between the sealing element 32 and the housing 31.

[0056] The sealing element 32 can be detachably mounted on the housing 31 at the lower part of the atomizing chamber in a variety of different ways. In one feasible embodiment, such as... Figure 3 As shown, the atomizing component 3 may include at least one fixing member 35, which can pass through the sealing member 32 and connect to the housing 31 to fix the sealing member 32 to the housing 31. The fixing member 35 includes at least one of the following: screw, bolt, or stud. When it is necessary to remove the sealing member 32, the fixing member 35 can be unscrewed. In another feasible embodiment, the sealing member 32 can also be detachably connected to the housing 31 through a snap-fit ​​structure.

[0057] In one feasible implementation, such as Figures 3 to 5 As shown, the first sealing element 34 can be annular, and the inner wall of the first sealing element 34 has an embedding groove 341 extending circumferentially. The edge of the atomizing plate 33 is disposed in the embedding groove 341 around its perimeter. In this way, the sealing between the upper end face of the atomizing plate 33 and the housing 31, and the sealing between the lower end face of the atomizing plate 33 and the sealing element 32 can be achieved using only one first sealing element 34.

[0058] In this embodiment, to facilitate the connection of the wire to the atomizing plate 33 in the embedding groove 341 of the first seal 34, as a feasible option, Figure 6 This is a bottom view of the atomizing component in an embodiment of the present invention, as shown below. Figure 6 As shown, it should be noted that the sealing element 32 is not shown at the left side of the first sealing element 34, while the sealing element 32 is shown at the right side of the first sealing element 34. The first sealing element 34 has a connecting channel 343 that connects the inner sidewall and the outer sidewall. A wire passes through the connecting channel 343 to connect with the atomizing plate 33. The connection between the connecting channel 343 and the inner sidewall is located below the atomizing plate 33. Furthermore, the sealing element 32 may have a sidewall that covers the outer sidewall of the first sealing element 34. The sidewall of the sealing element 32 has a notch 322, which corresponds to the position of the connecting channel 343, so that the wire passes through the notch 322 and the connecting channel 343 to connect with the atomizing plate 33.

[0059] In this embodiment, such as Figure 4 and Figure 5 As shown, the sealing member 32 can be used to press against the lower end face of the first sealing member 34 so that the upper end face of the first sealing member 34 is pressed against the lower surface of the edge of the housing 31 that forms the first opening 311, thereby ensuring the sealing effect.

[0060] As a preferred option, such as Figure 4 and Figure 5As shown, in the vertical direction, the position of the atomizing plate 33 corresponds to the position of the first opening 311, so that when the atomizing plate 33 is running, it is convenient to generate water mist at the water surface corresponding to the first opening 311, which is conducive to the water mist entering the atomizing chamber.

[0061] As a feasible option, Figure 7 This is a schematic diagram of the sealing component in an embodiment of the present invention, as shown below. Figure 6 and Figure 7 As shown, the sealing member 32 may have a heat dissipation hole 321. The position of the heat dissipation hole 321 corresponds to the area enclosed by the inner side wall of the first sealing member 34. In this way, it is beneficial to dissipate heat to the downward-facing side of the atomizing plate 33, especially when there is a lack of water in the atomizing chamber.

[0062] like Figures 4 to 6 As shown, the lower surface of the bottom of the housing 31 may have a recessed limiting portion 312, and the first seal 34 is disposed in the limiting portion 312. This helps to position the first seal 34 and prevent it from deviating from the first opening 311 in the horizontal direction.

[0063] like Figure 6 As shown, the lower surface of the bottom of the housing 31 also has a first positioning part 313, and the first sealing member 34 has a second positioning part 342 corresponding to the first positioning part 313, thereby realizing the circumferential positioning of the first sealing member 34. For example, the first positioning part 313 can be provided on the inner side wall of the limiting part 312, and the second positioning part 342 on the first sealing member 34 can also be correspondingly located on the outer side wall of the first sealing member 34, so that the first sealing member 34 is installed on the lower surface of the bottom of the housing 31 at a specific angle in the circumferential direction.

[0064] The bottom of the casing 31 can be generally flat, such as... Figure 4 and Figure 5 As shown, a recessed portion 314 can also be formed. When a recessed portion 314 is formed at the bottom of the housing 31, the first opening 311 is located at the bottom of the recessed portion 314. With this structure, when there is less water in the atomizing chamber, it is beneficial for water to converge towards the first opening 311 corresponding to the atomizing plate 33, so as to avoid the atomizing plate 33 from "dry burning" as much as possible.

[0065] As a feasible option, such as Figure 3 and Figure 4As shown, a second opening 315 may be provided at the bottom of the housing 31. The atomizing assembly 3 may include a liquid level detection assembly 36, which is inserted into the atomizing chamber through the second opening 315; the liquid level detection assembly 36 is sealed to the housing 31. The liquid level detection assembly 36 is used to detect the level of condensate in the atomizing chamber within the housing 31. The liquid level detection assembly 36 is detachably connected to the control board, so that the control board or the liquid level detection assembly 36 can be easily replaced in case of a malfunction.

[0066] As a feasible option, such as Figures 2 to 5 As shown, the housing 31 may include an upper housing 316 and a base 317. A first opening 311 is located at the bottom of the base 317. The bottom of the upper housing 316 is open, and the bottom of the upper housing 316 is connected to the upper part of the base 317 to form an atomizing chamber. With this structure, the base 317 can be separated from the upper housing 316, allowing it to be disassembled when needed, for example, to repair components mounted on the base 317 or to clean the interior of the base 317. Furthermore, the upper housing 316 may be made of metal, and the base 317 may be made of plastic. This provides corrosion resistance to prevent corrosion from condensate in contact with flue gas, as sulfur in the flue gas can enter the condensate and corrode metal components. To ensure a tight seal between the upper housing 316 and the base 317, a second sealing element 318 is provided between them. For example, the second seal 318 can be made of fluororubber, which has extremely strong resistance to chemical corrosion.

[0067] Furthermore, since the outer shell of the condenser heat exchanger 1 is also made of metal, when the upper shell 316 is made of metal, the upper shell 316 can form an integral structure with the condenser heat exchanger 1, thereby reducing the number of parts in the device.

[0068] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0069] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A gas-fired hot water device, characterized in that, The gas-fired hot water device includes: A condensing heat exchanger having a heat exchange chamber and condensing heat exchange piping located in the heat exchange chamber; An atomizing assembly includes: a housing having an atomizing chamber connected to a heat exchange chamber to allow condensate from the heat exchange chamber to flow into the atomizing chamber; a first opening at the bottom of the housing; a sealing member detachably mounted on the housing at the lower part of the atomizing chamber and corresponding to the first opening to seal it; an atomizing plate disposed on the side of the sealing member facing the atomizing chamber and corresponding to the first opening; and a control board for driving the atomizing plate and detachably connected to it. The exhaust pipe is connected to the outlet of the atomizing chamber and the outlet of the heat exchange chamber.

2. The gas-fired hot water device according to claim 1, characterized in that, The gas-fired hot water device includes: A combustion device for providing thermal energy; The main heat exchanger is located downstream of the combustion device along the flue gas flow direction, and the condensing heat exchanger is located downstream of the main heat exchanger along the flue gas flow direction. The main heat exchange pipeline of the main heat exchanger and the condensing heat exchange pipeline of the condensing heat exchanger are connected. At least part of the water flowing into the gas-fired hot water device flows sequentially through the condensing heat exchange pipeline of the condensing heat exchanger and the main heat exchange pipeline of the main heat exchanger. A flow guide pipe is used to connect the flue gas flowing out of the main heat exchanger with the atomizing chamber, and the flue gas flowing out of the main heat exchanger flows into the atomizing chamber after passing through the flow guide pipe; An outlet pipe is provided, which connects the outlet of the atomizing chamber to the exhaust pipe.

3. The gas-fired hot water device according to claim 1, characterized in that, A first sealing element is provided between the sealing element and the housing.

4. The gas-fired hot water device according to claim 3, characterized in that, The first seal is annular, and the inner wall of the first seal has an insert groove extending circumferentially, with the edge of the atomizing sheet disposed in the insert groove around its perimeter.

5. The gas-fired hot water device according to claim 4, characterized in that, The sealing member abuts against the lower end face of the first sealing member, such that the upper end face of the first sealing member abuts against the lower surface of the edge of the housing forming the first opening.

6. The gas-fired hot water device according to claim 4, characterized in that, In the vertical direction, the position of the atomizing plate corresponds to the position of the first opening.

7. The gas-fired hot water device according to claim 4, characterized in that, The sealing element has heat dissipation holes, and the positions of the heat dissipation holes correspond to the area enclosed by the inner sidewall of the first sealing element.

8. The gas-fired hot water device according to claim 3, characterized in that, The lower surface of the bottom of the housing has a recessed limiting portion, and the first sealing member is disposed within the limiting portion.

9. The gas-fired hot water device according to claim 3, characterized in that, The lower surface of the bottom of the housing has a first positioning part, and the first sealing member has a second positioning part corresponding to the first positioning part, so as to realize the circumferential positioning of the first sealing member.

10. The gas-fired hot water device according to claim 3, characterized in that, The atomizing assembly further includes: at least one fixing member, which passes through the sealing member and is connected to the housing to fix the sealing member to the housing, and the fixing member includes at least one of the following: screw, bolt, stud; or, The sealing component is detachably connected to the housing via a snap-fit ​​structure.

11. The gas-fired hot water device according to claim 1, characterized in that, The bottom of the housing has a recessed portion, and the first opening is located at the bottom of the recessed portion.

12. The gas-fired hot water device according to claim 1, characterized in that, The bottom of the housing has a second opening; The atomizing component further includes a liquid level detection component, which is inserted into the atomizing chamber through the second opening; the liquid level detection component is sealed to the housing.

13. The gas-fired hot water device according to claim 12, characterized in that, The liquid level detection component is detachably connected to the control board.

14. The gas-fired hot water device according to claim 1, characterized in that, The housing includes an upper housing and a base. The first opening is located at the bottom of the base. The bottom of the upper housing is open. The bottom of the upper housing is connected to the upper part of the base to form the atomizing chamber.

15. The gas-fired hot water device according to claim 14, characterized in that, The upper housing is made of metal, and the base is made of plastic.

16. The gas-fired hot water device according to claim 15, characterized in that, The upper shell and the condenser heat exchanger form an integral structure.

17. The gas-fired hot water device according to claim 14, characterized in that, A second sealing element is provided between the upper housing and the base.

18. The gas-fired hot water device according to claim 1, characterized in that, The control board is connected to the atomizing plate by a wire, and the control board is separately disposed from the housing.

19. The gas-fired hot water device according to claim 18, characterized in that, The wire is detachably connected to the control board, or the wire is detachably connected to the atomizing plate.

20. The gas-fired hot water device according to claim 18, characterized in that, A first sealing element is provided between the sealing element and the housing. The first sealing element is annular, and the inner sidewall of the first sealing element has an embedding groove extending circumferentially. The edge of the atomizing plate is disposed in the embedding groove around its perimeter. The first seal has a connecting channel that connects the inner sidewall and the outer sidewall. The wire passes through the connecting channel to connect with the atomizing plate. The connection between the connecting channel and the inner sidewall is located below the atomizing plate.

21. The gas-fired hot water device according to claim 20, characterized in that, The sealing element has a sidewall that covers the outer sidewall of the first sealing element, and the sidewall of the sealing element has a notch that corresponds to the position of the connecting channel so that the wire passes through the notch and the connecting channel is connected to the atomizing plate.

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