Condensation heat exchange device and condensation type water heater

Abstract

The utility model relates to the technical field of water heaters, discloses a condensation heat exchange device and a condensation type water heater, and aims to achieve the purpose of timely discharging condensed water in a condensation heat exchanger by starting any one of a condensed water atomization component and a condensed water recovery component when the other one fails. In this way, it can be ensured that condensate water in the condensation heat exchanger can be drained in time, the situation that too much condensate water in the condensation heat exchanger flows back to a draught fan of the condensation type water heater is avoided, it is ensured that the condensation type water heater can work normally, and user experience is improved.

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 condensing water heater. Background Technology

[0002] Condensing water heaters discharge a large amount of condensate during use. This condensate is formed by the condensation of water vapor in the flue gas. Currently, there are two common methods for treating condensate: one is to use an atomizing device to atomize the condensate into a water mist for discharge, and the other is to use a water pump to collect the condensate and inject it into the water circuit system of the condensing water heater, thus achieving the recycling of condensate.

[0003] When existing condensing water heaters typically use any of the methods mentioned above to treat condensate, scale can easily form on the surface of the atomizing device or inside the water pump during use due to the mixture of various impurities in the flue gas and the condensate. This can lead to poor performance or even cessation of operation of both devices. In such cases, to prevent the condensate water level from accumulating too high in the condensing heat exchanger, the water heater needs to be shut down and repaired before it can be used again, which seriously affects the user experience.

[0004] Therefore, there is an urgent need for a condensation heat exchange device to solve the above-mentioned technical problems. Utility Model Content

[0005] One of the technical problems solved by this utility model is to provide a condensing heat exchange device that can reduce the impact of condensate discharge from the condensing heat exchanger on the use of condensing water heaters.

[0006] The second technical problem solved by this utility model is to provide a condensing water heater that can reduce the impact of condensate discharge from the condensing heat exchanger on the use of the condensing water heater and improve the user experience.

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

[0008] Condensation heat exchange device, including:

[0009] A condensing heat exchanger includes a condensing heat exchange shell, wherein the condensing heat exchange shell is provided with a flue gas inlet and a flue gas outlet;

[0010] The condensate treatment assembly includes a condensate treatment housing that communicates with the bottom of the condensate heat exchange housing, and a condensate treatment unit disposed within the condensate treatment housing. The condensate treatment unit is used to perform acid-base balance adjustment and impurity filtration on the condensate.

[0011] The condensate atomizing assembly includes an atomizing housing that communicates with the condensate treatment housing, and an atomizing unit disposed at the bottom of the atomizing housing. One end of the atomizing housing is provided with a mist outlet that extends into the condensate heat exchange housing. The atomizing unit is used to atomize and / or vaporize the condensate in the atomizing housing.

[0012] The condensate recovery assembly includes a condensate recovery water path connected at one end to the condensate treatment housing and / or the atomizing housing, and a condensate recovery pump and a condensate recovery valve both disposed on the condensate recovery water path. The other end of the condensate recovery water path is used to connect to the water system of a condensing water heater.

[0013] The condensing heat exchange device provided by this utility model has the following advantages compared with the prior art: It collects the condensate generated by the condensing heat exchanger using a condensate treatment shell, and performs acid-base balance adjustment and impurity filtration on the condensate within the condensate treatment shell through a condensate treatment unit, thus delaying scaling on the surface of the atomizing unit and inside the condensate recovery pump. The condensate treated by the condensate treatment unit can be sent into the atomizing shell for atomization and then discharged into the outside atmosphere. Alternatively, the condensate recovery valve can be opened and the condensate recovery pump started to send the condensate treated by the condensate treatment unit into the water system of the condensing water heater for condensate recycling.

[0014] If either the condensate atomization component or the condensate recovery component malfunctions, the other can be activated to promptly drain the condensate from the condenser heat exchanger. This ensures that the condensate is drained in a timely manner, preventing excessive condensate from flowing back to the condensing water heater's fan, thus guaranteeing the normal operation of the condensing water heater and improving the user experience.

[0015] In some embodiments, the condensate recovery assembly further includes a condensate recovery housing disposed on the condensate recovery water path, the condensate recovery housing being located below the condensate treatment housing, the bottom of the condensate treatment housing being connected to the condensate recovery housing via the condensate recovery valve, and the condensate recovery pump being located downstream of the condensate recovery housing.

[0016] In some embodiments, the condensate recovery assembly further includes:

[0017] A pressure balancing pipe, one end of which is connected to the top of the condensate recovery housing and communicates with the top inner cavity of the condensate recovery housing, and the other end extends upward and is provided with an atmospheric connection port that communicates with the outside atmosphere. The atmospheric connection port is higher than the air outlet of the fan in the condensing water heater.

[0018] In some embodiments, the condensate recovery assembly further includes:

[0019] A pressure detection unit is used to detect the drainage pressure of the condensate recovery pump;

[0020] The circulating pressure relief water circuit has an inlet end connected to the outlet of the condensate recovery pump, and an outlet end connected to the condensate recovery housing via the pressure balance pipe. The outlet end of the circulating pressure relief water circuit is inclined downward along its own outlet direction, and the outlet end of the circulating pressure relief water circuit is connected to the pressure balance pipe to form a Y-shaped connecting pipe.

[0021] A circulating pressure relief valve is provided in the circulating pressure relief water circuit.

[0022] In some embodiments, the condensate atomizing component further includes:

[0023] The upper liquid level monitoring unit is used to monitor whether the liquid level of condensate in the condenser heat exchanger reaches the preset limit liquid level, which is lower than the minimum liquid level that causes the condensate in the condenser heat exchanger to flow back to the air outlet of the fan.

[0024] A liquid level monitoring unit under atomization is used to monitor whether the liquid level in the atomization housing has reached the preset minimum allowable atomization liquid level;

[0025] The atomization trigger liquid level monitoring unit is used to monitor whether the liquid level in the atomization housing has reached the preset atomization trigger liquid level; the preset limit liquid level height > the preset atomization trigger liquid level height > the preset minimum allowable atomization liquid level height.

[0026] In some embodiments, the condensate recovery assembly further includes:

[0027] The minimum recovery liquid level monitoring unit is used to monitor whether the liquid level in the condensate recovery shell is lower than the preset minimum recovery liquid level;

[0028] The maximum recovery liquid level monitoring unit is used to monitor whether the liquid level in the condensate recovery shell is not lower than the preset maximum recovery liquid level, where the preset limit liquid level height is greater than the preset maximum recovery liquid level height and the preset minimum recovery liquid level height.

[0029] In some embodiments, the condensate treatment housing is provided with at least one partition, which divides the inner cavity of the condensate treatment housing into at least two neutralization filter chambers. The at least two neutralization filter chambers are connected end to end to form a condensate treatment flow channel. One end of the condensate treatment flow channel forms a condensate outlet for connecting to the condensation heat exchanger, and the other end forms an atomization communication port for connecting to the atomization housing.

[0030] And / or, the bottom of the atomizing housing is provided with an acid-base neutralization element for acid-base balance adjustment of the condensate in the atomizing housing.

[0031] In some embodiments, the condensate treatment housing is located below and communicates with the condensate heat exchange housing, and the condensate heat exchange housing is integrally formed with the condensate treatment housing; and / or, the top of the atomizing housing protrudes from the inner bottom wall of the condensate heat exchange housing, and the bottom of the atomizing housing extends downward from the condensate heat exchange housing, and the condensate heat exchange housing is integrally formed with the atomizing housing.

[0032] In some embodiments, the bottom of the condensate treatment housing is provided with a disassembly port for the condensate treatment unit to enter and exit the condensate treatment housing;

[0033] The condensate treatment housing is detachably connected to a cover to open and close the disassembly port.

[0034] In some embodiments, the bottom of the condensate treatment housing is provided with a condensate treatment drain outlet, and the condensate treatment drain outlet is provided with a drain valve;

[0035] And / or, the bottom of the condensate recovery shell is provided with a recovery drain port, and the recovery drain port is provided with a drain valve;

[0036] And / or, the bottom of the atomizing housing is provided with an atomizing drain port, and the atomizing drain port is provided with a drain valve.

[0037] The second technical problem mentioned above is solved by the following technical solution:

[0038] A condensing water heater includes a fan, a flue pipe, and a condensing heat exchange device as described in any of the above embodiments. The flue inlet is connected to the air outlet of the fan, and the flue outlet is connected to one end of the flue pipe.

[0039] The condensing water heater provided by this utility model has the following advantages compared with the prior art: If either the condensate atomization component or the condensate recovery component malfunctions, the other can be activated to promptly drain the condensate from the condensing heat exchanger. This ensures that the condensate in the condensing heat exchanger is drained in a timely manner, preventing excessive condensate from flowing back to the condensing water heater's fan, thus guaranteeing the normal operation of the condensing water heater and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of a condensing water heater provided in an embodiment of this utility model;

[0042] Figure 2 This is the structure of the condensing water heater provided in this embodiment of the utility model. Figure 1 ;

[0043] Figure 3 This is the structure of the condensing water heater provided in this embodiment of the utility model. Figure 2 ;

[0044] Figure 4 This is a schematic diagram of the condensation heat exchange device provided in this embodiment of the utility model;

[0045] Figure 5 This is a partial principle of the condensation heat exchange device provided in this embodiment of the utility model. Figure 1 ;

[0046] Figure 6 This is a partial principle of the condensation heat exchange device provided in this embodiment of the utility model. Figure 2 .

[0047] In the picture:

[0048] 1. Condensate treatment assembly; 11. Condensate treatment housing; 12. Separator; 13. Atomizing connection port; 14. Condensate treatment drain port; 15. Condensate treatment unit; 151. Acid-base neutralizing agent; 152. Impurity filter element;

[0049] 2. Condensate atomizing assembly; 21. Atomizing housing; 22. Atomizing unit; 23. Lower liquid level monitoring unit; 24. Atomizing trigger liquid level monitoring unit; 25. Upper liquid level monitoring unit; 26. Acid-base neutralization component; 27. Exhaust pipe; 28. Anti-condensation pipe; 29. ​​Smoke exhaust channel;

[0050] 3. Condensate recovery assembly; 31. Condensate recovery housing; 311. Recovery drain outlet; 32. Condensate recovery pump; 33. Condensate recovery valve; 341. Minimum recovery level monitoring unit; 342. Maximum recovery level monitoring unit; 35. Pressure balancing pipe; 36. Pressure detection unit; 371. Condensate recovery water circuit; 372. Circulating pressure relief water circuit; 38. Circulating pressure relief valve; 39. Check valve;

[0051] 4. Condensing heat exchanger; 41. Condensing heat exchanger shell; 42. Condensing heat exchanger tube;

[0052] 51. First electromagnetic drain valve; 52. Second electromagnetic drain valve; 53. Manual drain valve; 54. First drain pipeline; 55. Second drain pipeline;

[0053] 110. Fan; 120. Main heat exchanger; 130. Hot water outlet pipe; 140. Cold water inlet pipe; 150. Burner; 160. Gas inlet pipe; 170. Gas control valve; 180. Controller; 190. Flue pipe. DETAILED DESCRIPTION

[0054] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0055] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0057] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0058] like Figures 1 to 3 As shown, an embodiment of this utility model provides a condensing water heater, which includes a main heat exchanger 120, a burner 150 for heating the water flowing in the main heat exchanger 120, a fan 110 for providing air to the burner 150, and a gas inlet pipe 160 connected to the gas inlet of the burner 150. A gas control valve 170 is provided on the gas inlet pipe 160. A hot water outlet pipe 130 is connected to the hot water outlet of the main heat exchanger 120, and a cold water inlet pipe 140 is connected to the cold water inlet of the main heat exchanger 120. Cold water enters the main heat exchanger 120 through the cold water inlet pipe 140. When the gas control valve 170 is opened, gas is sent to the burner 150 through the gas inlet pipe 160. At the same time, the fan 110 works to send air to the burner 150. The burner 150 works to heat the cold water flowing in the heat exchanger to form hot water, which flows out through the hot water outlet pipe 130. For example, the gas control valve 170 is a proportional valve used to regulate the gas flow rate.

[0059] The condensing water heater also includes a condensing heat exchanger 4, which comprises a condensing heat exchange shell 41 and condensing heat exchange tubes 42. Both ends of the condensing heat exchange tubes 42 extend out of the condensing heat exchange shell 41. The outlet end of the condensing heat exchange tubes 42 is connected to the inlet end of the main heat exchanger 120, and the outlet end of the condensing heat exchange tubes 42 is connected to the cold water inlet pipe 140. The air outlet of the fan 110 is connected to the inner cavity of the condensing heat exchange shell 41, and the condensing heat exchange shell 41 is connected to a flue pipe 190.

[0060] The high-temperature flue gas generated by combustion is cooled by the main heat exchanger 120 and then sent into the condensing heat exchange shell 41 by the fan 110. Low-temperature water enters the condensing heat exchange tube 42 through the cold water inlet pipe 140. The low-temperature water in the condensing heat exchange tube 42 exchanges heat with the hot flue gas in the condensing heat exchange shell 41. The water in the condensing heat exchange tube 42, after being heated, enters the main heat exchanger 120 for further heating. After the flue gas in the condensing heat exchange shell 41 is cooled, it is discharged into the outside atmosphere through the exhaust pipe 190. By setting up the condensing heat exchanger 4, the heat in the flue gas can be fully utilized, thereby improving the heat exchange efficiency.

[0061] When the hot flue gas is cooled by condensing heat exchanger 4, condensate will be generated in the condenser heat exchange shell 41. If the condensate level in the condenser heat exchange shell 41 is too high, the condensate may overflow to the air outlet of the fan 110, thereby damaging other components of the condensing water heater.

[0062] Therefore, embodiments of this utility model also provide a condensation heat exchange device, which includes the aforementioned condensation heat exchanger 4, condensate treatment component 1, condensate atomization component 2, and condensate recovery component 3. The condensation heat exchanger 4 includes a condensation heat exchange shell 41 with an inlet and an outlet. The condensate treatment component 1 includes a condensate treatment shell 11 communicating with the bottom of the condensation heat exchange shell 41, and a condensate treatment unit 15 disposed within the condensate treatment shell 11. The condensate treatment unit 15 is used for acid-base balance adjustment and impurity filtration of the condensate. The condensate atomization component 2 includes... The system includes an atomizing housing 21 connected to the bottom of the condensate treatment housing 11, and an atomizing unit 22 disposed at the bottom of the atomizing housing 21. One end of the atomizing housing 21 has a mist outlet that extends into the condensing heat exchange housing 41. The atomizing unit 22 is used to atomize and / or vaporize the condensate in the atomizing housing 21. The condensate recovery assembly 3 includes a condensate recovery water passage 371 connected to the condensate treatment housing 11 at one end, and a condensate recovery pump 32 and a condensate recovery valve 33 disposed on the condensate recovery water passage 371. The other end of the condensate recovery water passage 371 is used to connect to the water system of the condensing water heater. For example, the flue gas inlet is connected to the air outlet of the fan 110, the flue gas outlet is connected to one end of the flue gas pipe 190, the other end of the condensate recovery water passage 371 is connected to the hot water outlet pipe 130, the bottom of the condensate treatment housing 11 has a condensate outlet, and the inner cavity of the condensate treatment housing 11 is connected to the condensate treatment housing 11 through the condensate outlet.

[0063] The condensate from the condensing heat exchanger 4 is collected in the condensate treatment housing 11. The condensate is then treated by the condensate treatment unit 15 to balance its acid-base levels and filter impurities, thus delaying scaling on the surface of the atomizing unit 22 and inside the condensate recovery pump 32. The treated condensate can be sent to the atomizing housing 21 for atomization by the atomizing unit 22, and then discharged into the atmosphere. Alternatively, the condensate recovery valve 33 can be opened and the condensate recovery pump 32 activated to send the treated condensate into the water system of the condensing water heater for recycling. It should be noted that the atomizing housing 21 and the condensing water heater's water system can also be connected via the condensate recovery water path 371. This means that in the event of a malfunction of the condensate atomizing component 2, the condensate in the atomizing housing 21 can be sent to the condensing water heater's water system via the condensate recovery water path 371.

[0064] If either the condensate atomizing component 2 or the condensate recovery component 3 malfunctions, the other can be activated to promptly drain the condensate from the condenser heat exchanger 4. This ensures that the condensate in the condenser heat exchanger 4 is drained in a timely manner, preventing excessive condensate from flowing back to the fan 110 of the condensing water heater, thus guaranteeing the normal operation of the condensing water heater and improving the user experience.

[0065] In addition, the condensate is weakly acidic and may contain impurities. The condensate treatment unit 15 first performs acid-base balance adjustment and impurity filtration on the condensate, and then the condensate is atomized and discharged by the condensate atomizing component 2 or recycled through the condensate recovery component 3. This can reduce the corrosive effect of the condensate on the condensate atomizing component 2 and the condensate recovery component 3, and reduce the probability of the condensate clogging the condensate atomizing component 2 and the condensate recovery component 3.

[0066] In some embodiments, such as Figure 4 and Figure 5 As shown, the condensate treatment housing 11 is provided with at least one partition 12, which divides the inner cavity of the condensate treatment housing 11 into at least two neutralization filter chambers. The at least two neutralization filter chambers are connected end to end to form a condensate treatment flow channel. One end of the condensate treatment flow channel forms a condensate outlet for connecting to the condensation heat exchanger 4, and the other end forms an atomization connection port 13 that connects to the atomization housing 21.

[0067] This configuration extends the length of the condensate treatment channel, allowing the condensate treatment unit 15 sufficient time to balance the acid and alkali levels and filter impurities in the condensate, thereby improving the condensate treatment effect of the condensate treatment unit 15.

[0068] In some embodiments, such as Figure 4 and Figure 5 As shown, the condensate treatment unit 15 includes an acid-base neutralizing agent 151 and an impurity filter element 152. Along the condensate flow direction within the condensate treatment channel, the impurity filter element 152 is located downstream of the acid-base neutralizing agent 151. By first neutralizing the acid-base balance of the condensate and then filtering impurities, acidic condensate can be prevented from directly entering the impurity filter element 152, thus reducing its service life. It should be noted that the condensate treatment unit 15 can also employ an integrated filter element that can perform both acid-base balance neutralization and impurity filtration, as is available in the prior art; however, this will not be described in detail here.

[0069] For example, a separator 12 is provided, the top of the separator 12 is connected to the inner top wall of the condensate treatment housing 11, and the bottom of the separator 12 is spaced apart from the inner bottom wall of the condensate treatment housing 11. The separator 12 divides the condensate treatment into a first neutralization filter chamber and a second neutralization filter chamber. The bottom of the first neutralization filter chamber and the bottom of the second neutralization filter chamber are connected to form a U-shaped condensate treatment flow channel. The top opening of the first neutralization filter chamber is connected to the condensate outlet at the bottom of the condensation heat exchanger 4. The bottom of the first neutralization filter chamber is connected to the condensate recovery water channel 371. The upper inner cavity of the second neutralization filter chamber is connected to the atomizing housing 21 through the atomizing communication port 13.

[0070] The first neutralization filter chamber is provided with an acid-base neutralizer 151 and an impurity filter element 152, and the acid-base neutralizer 151 is located above the impurity filter element 152; the second neutralization filter chamber is provided with an impurity filter element 152, and the filtration accuracy of the impurity filter element 152 in the second neutralization filter chamber is greater than or equal to the filtration accuracy of the impurity filter element 152 in the first neutralization filter chamber.

[0071] When the condensate recovery valve 33 is closed, the condensate flows downward in the first neutralization filter chamber. The condensate treatment unit 15 first balances the acid and alkali of the condensate, and then filters it for impurities. After that, it enters the second neutralization filter chamber for further impurity filtration. The condensate in the second neutralization filter chamber overflows into the atomizing housing 21 through the atomizing connection port 13. Since the bottoms of the first and second neutralization filter chambers are connected, the condensate can accumulate and settle briefly, allowing the condensate to fully penetrate and contact with the impurity filter element 152, thereby improving the purification efficiency of the impurity filter element 152 for the condensate.

[0072] When the condensate recovery valve 33 is opened, the condensate that has undergone acid-base balance adjustment and impurity filtration in the first neutralization filter chamber enters the condensate recovery housing 31 through the condensate recovery valve 33. It should be noted that the number of neutralization filter chambers is not limited to two; it can also be three or four, etc., which will not be specifically described here.

[0073] In some embodiments, such as Figure 4 and Figure 5 As shown, the bottom of the condensate treatment housing 11 has a disassembly port for the condensate treatment unit 15 to enter and exit the housing 11. A cover is detachably connected to the condensate treatment housing 11 to open and close the disassembly port. This design facilitates the entry and exit of the condensate treatment unit 15 through the disassembly port, making it easy to replace the condensate treatment unit 15. It should be noted that the detachable connection between the condensate treatment unit 15 and the cover can be achieved using threaded fasteners or snap-fit ​​connections, etc., which will not be listed here.

[0074] In some embodiments, a sealing element such as a sealing ring is provided between the condensate treatment housing 11 and the cover to prevent condensate leakage.

[0075] In some embodiments, such as Figure 4 and Figure 6 As shown, the condensate recovery assembly 3 also includes a condensate recovery housing 31 disposed on the condensate recovery water passage 371. The condensate recovery housing 31 is located below the condensate treatment housing 11. The bottom of the condensate treatment housing 11 is connected to the condensate recovery housing 31 through the condensate recovery valve 33. The condensate recovery pump 32 is located downstream of the condensate recovery housing 31.

[0076] Since the condensate recovery housing 31 is located below the condensate treatment housing 11, when the condensate recovery valve 33 is opened, the condensate in the condensate treatment housing 11 will fall into the condensate recovery housing 31 under its own weight; without the need for valves and pumps, the condensate treated by the condensate treatment unit 15 can be sent into the condensate recovery housing 31, which is simple in structure and low in cost.

[0077] For example, the condensate recovery valve 33 is an electromagnetic switch valve, and both the condensate recovery valve 33 and the condensate recovery pump 32 are electrically connected to the controller 180 of the condensing water heater. When a malfunction is confirmed in the condensate atomization component 2, the condensate recovery valve 33 is controlled to connect the condensate recovery housing 31 and the condensate treatment housing 11. The condensate in the condensate treatment housing 11 enters the condensate treatment housing 11 through the condensate recovery valve 33. The condensate recovery pump 32 operates, sending the condensate in the condensate recovery housing 31 into the hot water outlet pipe 130, thus realizing the recycling of condensate. When the condensate recovery component 3 is not needed, the condensate recovery valve 33 is controlled to disconnect the condensate recovery housing 31 and the condensate treatment housing 11, and the condensate recovery pump 32 does not operate.

[0078] In some embodiments, such as Figure 4 and Figure 6 As shown, the condensate recovery assembly 3 also includes a pressure balancing pipe 35. One end of the pressure balancing pipe 35 is connected to the top of the condensate recovery housing 31 and communicates with the top inner cavity of the condensate recovery housing 31. The other end extends upward and is provided with an atmospheric connection port that communicates with the outside atmosphere. The atmospheric connection port is higher than the air outlet of the fan 110 in the condensing water heater. For example, the top opening of the pressure balancing pipe 35 forms an atmospheric connection port, and the atmospheric connection port is not lower than the highest point of the condensing heat exchange housing 41.

[0079] The condensate recovery housing 31 is connected to the outside atmosphere through the pressure balance pipe 35. During the process of condensate in the upper condensate treatment housing 11 falling into the lower condensate recovery housing 31, the internal and external pressure of the condensate recovery housing 31 is balanced. Moreover, since the atmosphere connection is higher than the air outlet of the fan 110, and the condensate in the condensation heat exchange housing 41 generally does not exceed the air outlet of the fan 110, it can effectively prevent condensate from overflowing through the atmosphere connection at the top of the pressure balance pipe 35.

[0080] In some embodiments, such as Figure 4 and Figure 6 As shown, the condensate recovery assembly 3 also includes a pressure detection unit 36, a circulating pressure relief water path 372, and a circulating pressure relief valve 38. The pressure detection unit 36 ​​is used to detect the drainage pressure of the condensate recovery pump 32. The inlet end of the circulating pressure relief water path 372 is connected to the outlet end of the condensate recovery pump 32, and the outlet end of the circulating pressure relief water path 372 is connected to the top inner cavity of the condensate recovery housing 31. The circulating pressure relief valve 38 is located in the circulating pressure relief water path 372.

[0081] If the condensate recovery water circuit 371 becomes blocked during the operation of the condensate recovery pump 32, it may cause the drainage pressure of the condensate recovery pump 32 to rise sharply, which may damage the condensate recovery pump 32. When the pressure detection unit 36 ​​detects that the drainage pressure of the condensate recovery pump 32 has risen sharply, the circulation pressure relief valve 38 is opened, so that the condensate recovery housing 31, the condensate recovery pump 32 and the circulation pressure relief water circuit 372 form a circulation water circuit for internal circulation of condensate, thereby relieving the pressure of the condensate recovery pump 32 and ensuring the safe operation of the condensate recovery pump 32.

[0082] In some embodiments, such as Figure 4 and Figure 6 As shown, the outlet of the condensate recovery pump 32 is equipped with a check valve 39, and the inlet of the circulating pressure relief water circuit 372 is connected to the condensate recovery water circuit 371 between the outlet of the condensate recovery pump 32 and the inlet of the check valve 39. When the pressure on the outlet side of the check valve 39 is high, the check valve 39 automatically closes to cut off the condensate recovery water circuit 371, increasing the drainage pressure of the condensate recovery pump 32. At this time, the circulating pressure relief valve 38 is opened to open the internal circulation water circuit of the condensate, thus realizing high-pressure protection for the condensate recovery pump 32 using the check valve 39.

[0083] In some embodiments, such as Figure 4 and Figure 6 As shown, the outlet of the circulating pressure relief water path 372 is connected to the condensate recovery shell 31 through the pressure balance pipe 35; the outlet of the circulating pressure relief water path 372 is inclined downward along its own outlet direction, and the outlet of the circulating pressure relief water path 372 is connected to the pressure balance pipe 35 to form a Y-shaped connecting pipe.

[0084] When the pressure relief valve is opened, the condensate in the circulating pressure relief water passage 372 is inclined downward along the outlet end of the circulating pressure relief water passage 372 and introduced into the pressure balance pipe 35, and then enters the condensate recovery shell 31 through the pressure balance pipe 35, thereby preventing the condensate from rushing straight up along the pressure balance pipe 35.

[0085] In some embodiments, such as Figures 1 to 3 As shown, the condensate treatment housing 11 is located below the condensate heat exchange housing 41, and the condensate heat exchange housing 41 and the condensate treatment housing 11 are integrally formed. This arrangement can improve the integration of the condensing water heater and increase space utilization.

[0086] In some embodiments, such as Figures 1 to 3 As shown, the top of the atomizing shell 21 protrudes from the inner bottom wall of the condensing heat exchange shell 41, and the bottom of the atomizing shell 21 extends downwards from the condensing heat exchange shell 41. The condensing heat exchange shell 41 and the atomizing shell 21 are integrally formed. This design improves the integration of the condensing water heater and increases space utilization. Moreover, because the top of the atomizing shell 21 protrudes from the inner bottom wall of the condensing heat exchange shell 41, the top of the atomizing shell 21 is higher than the inner bottom wall of the condensing heat exchange shell 41. This prevents the condensate from the bottom of the condensing heat exchange shell 41 from directly entering the atomizing shell 21 through the top opening. Instead, the condensate first enters the condensate treatment shell 11 and then enters the atomizing shell 21 through the atomizing connection port 13.

[0087] In some embodiments, such as Figures 1 to 3 As shown, the condensate treatment housing 11 is located on one side of the atomizing housing 21 in the horizontal direction. The atomizing connection port 13 is higher than the inner bottom wall of the atomizing housing 21. The treated condensate overflows and falls to the bottom of the atomizing housing 21 through the atomizing connection port 13, ensuring the treatment effect of the condensate treatment unit 15. Moreover, there is no need to install pumps and valves; the condensate in the condensate treatment housing 11 can enter the atomizing housing 21 through the atomizing connection port 13. In addition, there is no need to install valves and pumps to send the condensate treated by the condensate treatment unit 15 into the atomizing housing 21, which is simple in structure and low in cost.

[0088] In some embodiments, such as Figure 1 and Figure 4 As shown, the top opening of the atomizing housing 21 forms a mist exhaust port, and the opening end face of the mist exhaust port is higher than the lowest point of the air outlet of the fan 110. This arrangement can prevent condensate in the condensing heat exchange housing 41 from overflowing back into the condensing heat exchange housing 41 through the mist exhaust port.

[0089] In some embodiments, such as Figure 1 and Figure 4As shown, the condensate atomizing assembly 2 also includes an anti-condensation pipe 28 and an exhaust pipe 27. The lower end of the anti-condensation pipe 28 is located inside the condensation heat exchange shell 41, and the upper end of the anti-condensation pipe 28 passes through the top of the condensation heat exchange shell 41. The top of the atomizing shell 21 extends into the bottom of the anti-condensation pipe 28, and the gap between the atomizing shell 21 and the anti-condensation pipe 28 forms a smoke inlet channel. The top of the exhaust pipe 27 is connected to the outside atmosphere, and the lower end of the exhaust pipe 27 is opened to form a mist inlet and is spaced directly above the mist inlet. The exhaust pipe 27 passes through the anti-condensation pipe 28, and a smoke exhaust channel 29 is formed between the exhaust pipe 27 and the anti-condensation pipe 28. The smoke exhaust channel 29 connects the smoke inlet channel to the outside atmosphere.

[0090] The water mist generated by the atomizing unit 22 is discharged from the atomizing housing 21 through the top opening of the atomizing housing 21. The lower opening of the exhaust pipe 27 is set as an inlet and is spaced directly above the inlet, which facilitates the water mist discharged from the top opening of the atomizing housing 21 to enter the exhaust pipe 27 through the bottom opening of the exhaust pipe 27. The hot flue gas, after being cooled by the low-temperature water in the condensation heat exchange tube 42, enters the flue gas inlet channel and is then discharged into the outside atmosphere. A portion of the hot flue gas in the flue gas inlet channel... The exhaust gas enters the smoke exhaust duct 29 to heat the mist exhaust pipe 27, reducing the probability of water mist in the mist exhaust pipe 27 condensing upon contact with the inner wall of the mist exhaust pipe 27. Another part of the hot flue gas in the smoke exhaust duct enters the mist exhaust pipe 27, using this part of the hot flue gas to heat up and vaporize the water mist in the mist exhaust pipe 27, further preventing the water mist in the mist exhaust pipe 27 from condensing. The mixture of flue gas in the smoke exhaust duct 29 and water mist, water vapor and flue gas in the mist exhaust pipe 27 is then discharged into the outside atmosphere through the top of the mist exhaust pipe 27.

[0091] For example, the atomizing housing 21 is a cylindrical structure with an open top, the mist exhaust pipe 27 is coaxially arranged with the atomizing housing 21 and has the same inner diameter, the anti-condensation pipe 28 is coaxially arranged with the mist exhaust pipe 27, and the inner diameter of the anti-condensation pipe 28 is larger than the outer diameter of the mist exhaust pipe 27.

[0092] For example, the anti-condensation pipe 28 and the condensation heat exchange shell 41 are integrally formed, and the upper end of the mist exhaust pipe 27 is fixed to the anti-condensation pipe 28. The anti-condensation pipe 28 passes through the exhaust port at the top of the condensation heat exchange shell 41 and is connected to the exhaust pipe 190. The exhaust pipe 190 and the anti-condensation pipe 28 are connected to form a bend of greater than or equal to 90°.

[0093] In some embodiments, such as Figure 5As shown, an acid-base neutralization element 26 is provided at the bottom inner part of the atomizing housing 21 to balance the acidity and alkali of the condensate inside the atomizing housing 21. Because hot flue gas is introduced into the exhaust pipe 27, this gas may enter the atomizing housing 21 and dissolve in the condensate, causing the condensate to become weakly acidic again, thus affecting the service life of the atomizing unit 22. By providing the acid-base neutralization element 26 at the bottom of the atomizing housing 21, the acidity and alkali of the condensate inside the atomizing housing 21 can be balanced in real time, creating a good neutral atomized water quality for the atomizing unit 22.

[0094] For example, the atomizing unit 22 is installed on the inner bottom wall of the atomizing housing 21, and the acid-base neutralizing component 26 is laid on the inner bottom wall of the atomizing unit 22 and surrounds the atomizing unit 22.

[0095] In some embodiments, such as Figure 4 and Figure 5 As shown, the condensate atomization assembly 2 also includes an upper liquid level monitoring unit 25, a lower atomization liquid level monitoring unit 23, and an atomization trigger liquid level monitoring unit 24. The upper liquid level monitoring unit 25 is used to monitor whether the condensate liquid level in the condenser heat exchanger 4 has reached a preset limit liquid level, which is lower than the minimum liquid level required for the condensate in the condenser heat exchanger housing 41 to flow back to the air outlet of the fan 110. The lower atomization liquid level monitoring unit 23 is used to monitor whether the liquid level in the atomization housing 21 has reached a preset minimum allowable atomization liquid level. The atomization trigger liquid level monitoring unit 24 is used to monitor whether the liquid level in the atomization housing 21 has reached a preset atomization trigger liquid level. The height of the preset limit liquid level > the height of the preset atomization trigger liquid level > the height of the preset minimum allowable atomization liquid level.

[0096] For ease of description, the actual liquid level inside the atomizing housing 21 is denoted as H. i The preset minimum atomization liquid level is denoted as H1, the preset limit liquid level is denoted as H2, and the preset atomization trigger liquid level is denoted as H3, where H2 > H3 > H1.

[0097] If H i

[0098] If H1≤H i If the liquid level is ≤H2, it indicates that the liquid level inside the atomizing housing 21 meets the normal operating requirements of the atomizing unit 22. The atomizing unit 22 is then controlled to enter standby mode, and the liquid level H inside the atomizing housing 21 is monitored in real time. i The height change, and in H i When H3 is ≥3, the atomizing unit 22 is activated; otherwise, the liquid level H inside the atomizing housing 21 is continuously monitored. i The height change. ​

[0099] If H i >H2 indicates that the liquid level inside the atomizing housing 21 is higher than the maximum normal operating liquid level of the atomizing unit 22. Condensate in the condenser heat exchanger 4 may flow back to the air outlet of the fan 110, potentially damaging other parts of the condensing water heater. The cause of the excessively high condensate level in the condenser heat exchanger 4 may be slow atomization speed or a malfunction of the atomizing unit 22. In this case, the atomizing unit 22 enters an atomization water level risk warning state, controlling it to operate continuously at maximum atomization power for a risk clearance time T1, and monitoring the water level inside the atomizing housing 21 in real time. If the liquid level H in the atomizing housing 21 reaches the risk clearance time T1, the warning will be issued accordingly. i If the level is still greater than H2, it indicates a malfunction in atomizing unit 22. The condensate recovery assembly 3 will automatically activate to recover condensate, and a condensate atomizing assembly 2 malfunction alarm will be issued simultaneously. If the liquid level H in the atomizing housing 21 is higher than H2 after the atomization risk clearance time T1 has elapsed... i If the value is ≤H2, continue to control the operation of atomizing unit 22.

[0100] During the normal operation of the atomizing unit 22, if the liquid level inside the atomizing housing 21 continues to rise to H i If the value is greater than H2, it indicates that the atomizing unit 22 has aged, resulting in reduced atomization efficiency. The atomizing unit 22 is then controlled to operate at maximum atomization power continuously for atomization risk clearance time T2. When the atomization risk clearance time T2 is reached, if the liquid level H in the atomizing housing 21... i If the level is still greater than H2, it indicates a malfunction in atomizing unit 22. The condensate recovery assembly 3 will automatically activate to recover condensate, and a condensate atomizing assembly 2 malfunction alarm will be issued simultaneously. If the liquid level H in the atomizing housing 21 is higher than H2 after the atomization risk clearance time T1 has elapsed... i If the value is ≤H2, it may be that the power of the atomizing unit 22 is too low, which may cause the atomizing unit 22 to fail to atomize the condensate water generated by the condenser heat exchanger 4 in time, resulting in the phenomenon of the condensate water level in the condenser heat exchanger 4 rising. After that, the atomizing unit 22 can be controlled to continue to work at the maximum atomizing power.

[0101] It should be noted that the upper liquid level monitoring unit 25, the atomized lower liquid level monitoring unit 23, and the atomized triggered liquid level monitoring unit 24 can all adopt liquid level detection devices that measure liquid level in existing technologies, such as liquid level probes and liquid level sensors, which will not be listed here.

[0102] In some embodiments, such as Figure 4As shown, the upper liquid level monitoring unit 25 is lower than the top surface of the atomizing housing 21. This setting can reduce the probability that the water level in the atomizing housing 21 is too high and overflows from the mist outlet at the top of the atomizing housing 21 into the condensing heat exchange housing 41; it can also prevent the condensate in the condensing heat exchange housing 41 from directly entering the atomizing housing 21 through the mist outlet without undergoing acid-base balance adjustment and impurity filtration.

[0103] In some embodiments, such as Figure 6 As shown, the condensate recovery assembly 3 also includes a minimum recovery liquid level monitoring unit 341 and a maximum recovery liquid level monitoring unit 342. The minimum recovery liquid level monitoring unit 341 is used to monitor whether the liquid level in the condensate recovery housing 31 is lower than the preset minimum recovery liquid level; the maximum recovery liquid level monitoring unit 342 is used to monitor whether the liquid level in the condensate recovery housing 31 is not lower than the preset maximum recovery liquid level, wherein the height of the preset limit liquid level is greater than the height of the preset maximum recovery liquid level, which is greater than the height of the preset minimum recovery liquid level.

[0104] For ease of description, the actual liquid level inside the condensate recovery shell 31 is denoted as H. ii The lowest recovery liquid level monitoring unit is denoted as H4, and the highest recovery liquid level monitoring unit 342 is denoted as H5, with H2 > H5 > H4.

[0105] If H ii <H4 indicates that the liquid level inside the condensate recovery housing 31 is lower than the minimum liquid level required for the condensate recovery assembly 3 to operate normally. The condensate recovery pump 32 enters a stop or standby state to prevent the condensate recovery pump 32 from running dry.

[0106] If H4≤H ii <H5 indicates that the liquid level inside the condensate recovery housing 31 meets the normal operating requirements of the condensate recovery assembly 3. When the liquid level inside the condensate recovery housing 31 rises to at least H5, the condensate recovery pump 32 is started. The drainage pressure of the condensate recovery pump 32 is monitored in real time. i When the pressure is not less than the preset maximum drainage pressure P0, the control circulation relief valve 38 connects the condensate recovery housing 31 and the condensate treatment housing 11.

[0107] If H ii ≥H5 will trigger H iiThe main reason for ≥H5 is likely due to leakage in the condensate recovery valve 33 during the previous condensate atomization mode operation. It could also be caused by rainwater backflowing into the condensate heat exchange shell 41 through the exhaust pipe 190 before the condensate water heater is turned on, coupled with leakage in the condensate recovery valve 33. In this case, the condensate recovery pump 32 is controlled to operate at maximum recovery power to quickly recover and reuse the condensate, thereby lowering the liquid level in the condensate heat exchange shell 41. This prevents the condensate water from flowing back to the fan 110 outlet after the condensate water heater starts operating and generates new condensate in the shell.

[0108] During the process of controlling the condensate recovery pump 32 to operate at maximum recovery power, the drainage pressure of the condensate recovery pump 32 is monitored in real time. When the drainage pressure of the condensate recovery pump 32 is not less than the preset maximum drainage pressure, the circulation pressure relief valve 38 is controlled to connect the outlet of the condensate recovery pump 32 and the inner cavity of the condensate recovery housing 31 to relieve pressure on the condensate recovery pump 32.

[0109] When the condensate recovery pump 32 operates continuously at maximum recovery power for the duration of the first recovery risk clearance, if H ii ≥H2, and / or the drainage pressure P of the condensate recovery pump 32 i If the pressure is greater than or equal to the preset maximum drainage pressure P0, it indicates a malfunction in the condensate recovery mode. This may be due to a blockage in the condensate recovery water circuit 371, which increases the drainage pressure of the condensate recovery pump 32. The condensate recovery pump 32 is unable to reduce the liquid level in the condensate heat exchange shell 41 in time. If the condensing water heater continues to operate, the liquid level in the condensate heat exchange shell 41 may rise further, resulting in condensate flowing back to the air outlet of the fan 110.

[0110] If H ii <H5 indicates that the water heater malfunction has been successfully cleared. At this point, the condensate recovery pump 32 can be controlled to continue working.

[0111] The condensate recovery assembly 3 enters a recovery water level risk warning state, and the pressure detection unit 36 ​​detects the drainage pressure P of the condensate recovery pump 32. i If P i ≥P0, where P0 is the preset maximum drainage pressure of the condensate recovery pump 32 during normal operation. The circulation pressure relief valve 38 is opened to relieve pressure on the condensate recovery pump 32; at the same time, the condensate recovery pump 32 is controlled to continuously recover at maximum power for the risk clearance duration T2, and the liquid level H in the condensate recovery housing 31 is monitored in real time. ii When the risk clearance time T2 is reached, if the liquid level H in the condensate recovery shell 31 is... iiIf the level is still greater than H5, it indicates a blockage in the condensate recovery pipe. The condensate atomizing component 2 will automatically activate to atomize and discharge the condensate, while simultaneously issuing a fault alarm for the condensate recovery component 3. If the liquid level in the condensate recovery housing 31 drops to H5 before or at the end of the risk clearance period T2,... ii If the value is ≤H5, it indicates that the power of the atomizing unit 22 may be too low, causing the atomizing unit 22 to fail to atomize the condensate produced by the condenser heat exchanger 4 in time, resulting in the phenomenon of the condensate level in the condenser heat exchanger 4 rising.

[0112] It should be noted that the minimum recovery liquid level monitoring unit 341 and the maximum recovery liquid level monitoring unit 342 can adopt liquid level detection devices that measure liquid level in the prior art, such as liquid level probes and liquid level sensors, which will not be listed here.

[0113] In some embodiments, such as Figures 1 to 3 As shown, the bottom of the condensate treatment housing 11 is provided with a condensate treatment drain port 14, and the condensate treatment drain port 14 is provided with a drain valve; the bottom of the condensate recovery housing 31 is provided with a recovery drain port 311, and the recovery drain port 311 is provided with a drain valve; the bottom of the atomizing housing 21 is provided with an atomizing drain port, and the atomizing drain port is provided with a drain valve.

[0114] It should be noted that there are two types of drain valves: one is a manual drain valve 53, and the other is an electromagnetic drain valve.

[0115] For example, the condensate treatment drain outlet 14 and the atomization drain outlet share the same electromagnetic drain valve, which is referred to as the first electromagnetic drain valve 51. The recovery mist outlet uses a separate electromagnetic drain valve, which is referred to as the second electromagnetic drain valve 52.

[0116] Both the condensate treatment drain outlet 14 and the atomizing drain outlet are connected to the first drain pipe 54. The first drain pipe 54 is connected to the first electromagnetic drain valve 51 at the bottom of the condensing water heater. The first electromagnetic drain valve 51 is connected to a drain pipe. In case of a malfunction of the condensate atomizing component 2, the first electromagnetic drain valve 51 can be opened for emergency treatment to discharge the condensate through the drain pipe.

[0117] The condensate recovery outlet 311 is connected to a second drain pipe 55, which is connected to a second electromagnetic drain valve 52 at the bottom of the condensate water heater. The second electromagnetic drain valve 52 is connected to a drain pipe. In case of a malfunction of the condensate recovery assembly 3, the second electromagnetic drain valve 52 can be opened for emergency treatment to discharge the condensate through the drain pipe.

[0118] The first drain pipe 54 and the second drain pipe 55 are both connected to the same manual drain valve 53 at the bottom of the condensing water heater. The manual drain valve 53 is connected to the drain pipe and can also be opened to drain the condensate when the first electromagnetic drain valve 51 and the second electromagnetic drain valve 52 malfunction.

[0119] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. Condensation heat exchange device, It is characterized in that include: A condensing heat exchanger (4), comprising a condensing heat exchange shell (41), wherein the condensing heat exchange shell (41) is provided with a smoke inlet and a smoke exhaust port; A condensate treatment assembly (1), comprising a condensate treatment shell (11) connected to the bottom of the condensation heat exchange shell (41), and a condensate treatment unit (15) arranged in the condensate treatment shell (11), wherein the condensate treatment unit (15) is used to adjust the acid-base balance and filter impurities of the condensate; A condensed water atomization assembly (2), comprising an atomization shell (21) connected to the condensed water treatment shell (11), and an atomization unit (22) arranged at the bottom of the atomization shell (21), one end of the atomization shell (21) is provided with a mist outlet and extends into the condensing heat exchange shell (41), and the atomization unit (22) is used to atomize the condensed water in the atomization shell (21); The condensate recovery assembly (3) comprises a condensate recovery water circuit (371) having one end connected to the condensate treatment shell (11) and / or the atomization shell (21), and a condensate recovery pump (32) and a condensate recovery valve (33) both arranged on the condensate recovery water circuit (371); the other end of the condensate recovery water circuit (371) is used to connect to the water system of the condensing water heater.

2. The condensing heat exchange device according to claim 1, It is characterized in that The condensate recovery component (3) also includes a condensate recovery shell (31) arranged on the condensate recovery water circuit (371), the condensate recovery shell (31) is located below the condensate treatment shell (11), the bottom of the condensate treatment shell (11) is connected to the condensate recovery shell (31) through the condensate recovery valve (33), and the condensate recovery pump (32) is located downstream of the condensate recovery shell (31).

3. The condensing heat exchange device according to claim 2, It is characterized in that The condensed water recovery component (3) further comprises: A pressure balancing pipe (35), one end of which is connected to the top of the condensate recovery shell (31) and communicates with the top inner cavity of the condensate recovery shell (31), and the other end of which extends upward and is provided with an atmospheric communication port connected to the outside atmosphere, wherein the atmospheric communication port is higher than the air outlet of the fan (110) in the condensing water heater.

4. The condensing heat exchange device according to claim 3, It is characterized in that The condensed water recovery component (3) further comprises: A pressure detection unit (36) for detecting the drainage pressure of the condensate recovery pump (32); A circulating pressure relief water circuit (372), wherein the water inlet end of the circulating pressure relief water circuit (372) is connected to the outlet of the condensate recovery pump (32), and the water outlet end of the circulating pressure relief water circuit (372) is connected to the condensate recovery shell (31) through the pressure balance pipe (35); the water outlet end of the circulating pressure relief water circuit (372) is arranged to be inclined downward along its own water outlet direction, and the water outlet end of the circulating pressure relief water circuit (372) is connected to the pressure balance pipe (35) to form a Y-shaped connecting pipe; A circulating pressure relief valve (38), wherein the circulating pressure relief valve (38) is arranged in the circulating pressure relief waterway (372).

5. The condensing heat exchange device according to claim 4, It is characterized in that The condensed water atomization assembly (2) further comprises: an upper liquid level monitoring unit (25) for monitoring whether the condensed water level in the condensing heat exchanger (4) reaches a preset limit liquid level, the preset limit liquid level being lower than a minimum liquid level at which the condensed water in the condensing heat exchanger (4) flows back to an air outlet of the fan (110); An atomizing liquid level monitoring unit (23) for monitoring whether the liquid level in the atomizing housing (21) reaches a preset minimum allowable atomizing liquid level; The atomization triggering liquid level monitoring unit (24) is used to monitor whether the liquid level in the atomization housing (21) reaches a preset atomization triggering liquid level; the preset limit liquid level height> the preset atomization triggering liquid level height> the preset minimum allowable atomization liquid level height.

6. The condensing heat exchange device according to claim 4, It is characterized in that The condensed water recovery component (3) further comprises: A minimum recovery liquid level monitoring unit (341) is used to monitor whether the liquid level in the condensate recovery housing (31) is lower than a preset minimum recovery liquid level; The maximum recovery liquid level monitoring unit (342) is used to monitor whether the liquid level in the condensate recovery shell (31) is not lower than a preset maximum recovery liquid level, and the preset limit liquid level height is greater than the preset maximum recovery liquid level height> the preset minimum recovery liquid level height.

7. The condensation heat exchange device according to any one of claims 1 to 6, It is characterized in that At least one partition (12) is provided in the condensate treatment shell (11), and the partition (12) divides the inner cavity of the condensate treatment shell (11) into at least two neutralization filter chambers, and the at least two neutralization filter chambers are connected end to end to form a condensate treatment flow channel; one end of the condensate treatment flow channel forms a condensate outlet for communicating with the condensation heat exchanger (4), and the other end forms an atomization communication port (13) that communicates with the atomization shell (21); And / or, an acid-base neutralizing component (26) is provided at the inner bottom of the atomizing shell (21) for adjusting the acid-base balance of the condensed water in the atomizing shell (21).

8. The condensation heat exchange device according to any one of claims 1 to 6, It is characterized in that The condensate treatment shell (11) is located below the condensate heat exchange shell (41) and is in communication with the condensate heat exchange shell (41); the condensate heat exchange shell (41) and the condensate treatment shell (11) are integrally formed; And / or, the top of the atomizing shell (21) is protruding from the inner bottom wall of the condensing heat exchange shell (41), the bottom of the atomizing shell (21) extends downward from the condensing heat exchange shell (41), and the condensing heat exchange shell (41) and the atomizing shell (21) are integrally formed.

9. The condensation heat exchange device according to any one of claims 2 to 6, It is characterized in that The bottom of the condensate treatment housing (11) is provided with a condensate treatment drain outlet (14), and the condensate treatment drain outlet (14) is provided with a drain valve; And / or, a recovery drain port (311) is provided at the bottom of the condensate recovery shell (31), and the recovery drain port (311) is provided with a drain valve; And / or, the bottom of the atomizing housing (21) is provided with an atomizing sewage outlet, and the atomizing sewage outlet is provided with a sewage valve.

10. Condensing water heater, It is characterized in that It comprises a fan (110), a smoke exhaust pipe (190) and a condensing heat exchange device as described in any one of claims 1 to 9, wherein the smoke inlet is connected to the air outlet end of the fan (110), and the smoke exhaust port is connected to one end of the smoke exhaust pipe (190).

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