Condensate water recovery and treatment device and gas water heater

Abstract

The utility model relates to gas water heater technical field discloses a kind of condensate water recovery processing device and gas water heater, and condensate water recovery processing device includes pipeline assembly, water mixing structure and purification structure.Pipeline assembly includes water inlet pipeline and condensate water pipeline, water inlet pipeline is connected the water inlet of condensing heat exchanger, and one end of condensate water pipeline is connected the condensate water outlet of condensing heat exchanger.Water mixing structure is located in water inlet pipeline, and has the water inlet passage, water mixing cavity and water outlet passage of intercommunication, another end of condensate water pipeline is connected water mixing cavity, water inlet passage is at least partially located in water mixing cavity, when water flow passes through water mixing cavity via water inlet passage, negative pressure can be generated in water mixing cavity, to make water in condensate water pipeline enter water mixing cavity.Purification structure is located in condensate water pipeline, for purifying treatment condensate water.Water mixing structure is arranged to realize the automatic recovery condensate water while water inlet pipeline water, without separate discharge or cleaning condensate water, reduce the installation difficulty of gas water heater.

Description

Technical Field

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

[0002] Condensing gas water heaters are becoming increasingly widely used because they can recover the latent heat of flue gas through secondary heat exchange, thus improving thermal efficiency. During this secondary heat exchange process, the condensing heat exchanger produces a certain amount of condensate, necessitating consideration of condensate drainage and treatment.

[0003] Currently, most gas water heaters require a separate condensate drain pipe to guide the condensate to the sewer or a specific collection container. For users with existing renovations, especially in older homes or spaces with limited space, this often necessitates drilling through walls, damaging the existing structure, increasing installation time and costs, and limiting the applicability of gas water heaters. Some high-end models can recycle condensate to solve the condensate drainage problem, but this requires an additional condensate recovery container and booster pump to transport the collected condensate to the water system. This results in a complex design, a high failure rate, and increased design, manufacturing, and maintenance costs.

[0004] Therefore, there is an urgent need for a condensate recovery and treatment device and a gas water heater to solve the above problems. Utility Model Content

[0005] Based on the above problems, the purpose of this utility model is to provide a condensate recovery and treatment device and a gas water heater, which can solve the problem of inconvenient installation caused by condensate discharge of gas water heaters, realize condensate recovery and utilization, save energy and protect the environment, simplify the structural design of condensate recovery, and reduce the manufacturing and maintenance costs of gas water heaters.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] On the one hand, a condensate recovery and treatment device is provided, comprising:

[0008] The piping assembly includes an inlet water pipe and a condensate water pipe, wherein the inlet water pipe is connected to the inlet of the condenser heat exchanger of the gas water heater, and one end of the condensate water pipe is connected to the condensate water outlet of the condenser heat exchanger;

[0009] A mixing structure is provided in the inlet pipe. The mixing structure has a connected inlet channel, a mixing chamber, and an outlet channel. The other end of the condensate pipe is connected to the mixing chamber. The inlet channel is at least partially located inside the mixing chamber, and the cross-sectional area of ​​the portion of the inlet channel inside the mixing chamber gradually decreases along the water flow direction. When water flows through the inlet channel into the mixing chamber, a negative pressure can be generated inside the mixing chamber, so that water in the condensate pipe can enter the mixing chamber.

[0010] A purification structure is installed in the condensate pipe to purify and treat the condensate.

[0011] As an optional solution for the condensate recovery and treatment device of this utility model, the mixing structure is connected in series in the water inlet pipe;

[0012] Alternatively, the water inlet pipeline may include a first pipeline and a second pipeline connected in parallel, and the mixing structure may be disposed in the first pipeline or the second pipeline.

[0013] As an optional solution for the condensate recovery and treatment device of this utility model, the mixing chamber is divided into an inner water chamber and an outer water chamber that are independent of each other and can be connected. The outlet end of the water inlet channel is located in the inner water chamber, and the inner water chamber is provided with a water passage hole that connects to the outer water chamber.

[0014] As an optional solution for the condensate recovery and treatment device of this utility model, the mixing structure is provided with a pipe joint, one end of which is connected to the external water cavity and the other end is used to connect to the condensate pipeline. The extension direction of the pipe joint is set at an acute angle to the extension direction of the water inlet channel.

[0015] As an optional solution of the condensate recovery and treatment device of this utility model, the mixing structure is provided with a buffer chamber between the mixing chamber and the outlet channel. The buffer chamber is connected to the mixing chamber through a diversion channel. The diversion channel extends in a direction close to the outlet channel, and the inlet end of the diversion channel is directly opposite the outlet end of the inlet channel.

[0016] And / or, the mixing structure is provided with an inlet connector and an outlet connector, the inlet connector and the outlet connector are used to connect to the inlet pipe, the inlet connector is provided with the inlet channel, and the outlet connector is provided with the outlet channel.

[0017] As an optional embodiment of the condensate recovery and treatment device of this utility model, the purification structure includes an outer shell, a fixed cylinder assembly disposed within the outer shell, and a filter element. The fixed cylinder assembly is provided with a first chamber and a second chamber that are independent of each other and can communicate with each other. The first chamber is provided with a first water inlet that communicates with the second chamber, and the second chamber is provided with a second water inlet that communicates with the inner cavity of the outer shell. The water level at the first water inlet is greater than the water level at the second water inlet. The filter element is located in the first chamber and is used to filter condensate and / or react with condensate.

[0018] As an optional solution of the condensate recovery and treatment device of this utility model, the fixed cylinder assembly includes a first fixed cylinder and a second fixed cylinder, the second fixed cylinder is spaced outside the first fixed cylinder, the first fixed cylinder forms the first chamber, and the second fixed cylinder and the first fixed cylinder define the second chamber.

[0019] Alternatively, the fixed cylinder assembly may include a third fixed cylinder, which has a partition structure to separate the first chamber and the second chamber within the third fixed cylinder.

[0020] As an optional solution for the condensate recovery and treatment device of this utility model, when the fixed cylinder assembly includes a first fixed cylinder and a second fixed cylinder, one of the first fixed cylinder and the second fixed cylinder is provided with a limiting protrusion, and the other is provided with a limiting groove. The limiting protrusion is engaged with the limiting groove to limit the relative position of the first fixed cylinder and the second fixed cylinder.

[0021] As an optional solution for the condensate recovery and treatment device of this utility model, the purification structure further includes filter cylinders, which are spaced out from the fixed cylinder assembly;

[0022] And / or, the purification structure further includes a magnetic suction element disposed on the fixed cylinder assembly, the magnetic suction element being used to adsorb magnetic substances in the condensate.

[0023] On the other hand, a gas water heater is provided, including a condensing heat exchanger and a condensate recovery and treatment device as described above, wherein the condensate recovery and treatment device is used to recover and treat the condensate generated by the condensing heat exchanger.

[0024] The beneficial effects of this utility model are as follows:

[0025] The condensate recovery and treatment device and gas water heater provided by this utility model, during the process of water flowing through the inlet pipe to the condensing heat exchanger, the water flows through the mixing structure. Because the cross-sectional area of ​​the portion of the inlet channel located within the mixing chamber gradually decreases along the water flow direction, the water flow accelerates at the point where the cross-sectional area decreases when passing through the inlet channel, thereby generating negative pressure within the mixing chamber, i.e., producing the Venturi effect. Since the condensate pipe connects the condensate outlet of the condensing heat exchanger and the mixing chamber, the condensate generated by heat exchange in the condensing heat exchanger, after entering the condensate pipe, will automatically enter the mixing chamber under the negative pressure and then flow into the condensing heat exchanger through the inlet pipe, realizing the recovery and reuse of condensate.

[0026] In other words, the mixing structure automatically recovers condensate while water is flowing through the inlet pipe, eliminating the need for additional power structures. This simplifies the condensate recovery design, reduces manufacturing and maintenance costs, and improves operational reliability. Because the condensate is recovered, no external drain pipe or collection container is required during installation, preserving the original aesthetics and simplifying the installation process. It also saves installation space and is suitable for various installation environments, expanding the applicability of gas water heaters. Furthermore, the reuse of condensate conserves water resources, further enhancing the energy efficiency and environmental friendliness of gas water heaters.

[0027] By installing a purification structure on the condensate pipe, the condensate can be purified as it flows through the structure. This includes filtering out impurities and neutralizing the pH level, ensuring the condensate meets recycling requirements and improving user safety. Attached Figure Description

[0028] 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.

[0029] Figure 1 This is a first schematic diagram of a gas water heater provided in Embodiment 1 of this utility model;

[0030] Figure 2 This is a second schematic diagram of the gas water heater provided in Embodiment 1 of this utility model;

[0031] Figure 3 This is a cross-sectional schematic diagram of the mixing structure provided in a specific embodiment of this utility model;

[0032] Figure 4This is a schematic diagram of the water flow direction inside the mixing structure provided in a specific embodiment of this utility model;

[0033] Figure 5 This is a cross-sectional schematic diagram of the purification structure provided in a specific embodiment of this utility model;

[0034] Figure 6 This is a schematic diagram of the water flow direction inside the purification structure provided in a specific embodiment of this utility model;

[0035] Figure 7 This is an exploded view of the purification structure provided in a specific embodiment of this utility model;

[0036] Figure 8 This is a schematic diagram of the gas water heater provided in Embodiment 2 of this utility model;

[0037] Figure 9 This is an exploded view of the condenser heat exchanger provided in a specific embodiment of this utility model.

[0038] In the picture:

[0039] 1. Piping components; 2. Mixing structure; 3. Purification structure; 4. Flow detection components;

[0040] 11. Water inlet pipe; 12. Condensate drain pipe;

[0041] 111. First pipeline; 112. Second pipeline; 121. One-way control valve;

[0042] 21. Water inlet channel; 22. Mixing chamber; 221. Inner water chamber; 222. Outer water chamber; 23. Water outlet channel; 24. Pipe connector; 25. Buffer chamber; 26. Drainage channel; 27. Water inlet connector; 28. Water outlet connector; 29. ​​Separator; 291. Water passage hole;

[0043] 31. Outer shell; 311. First cylindrical section; 312. Second cylindrical section; 313. Fourth sealing element; 314. Sealing joint; 3141. Threaded connection part;

[0044] 3111, Inlet connection; 3121, Outlet connection;

[0045] 32. Fixed cylinder assembly; 33. Filter element; 34. Filter cylinder; 35. Magnetic suction element;

[0046] 3201, First chamber; 3202, Second chamber; 321, First fixing cylinder; 322, Second fixing cylinder; 323, First sealing element; 324, Second sealing element; 325, Third sealing element;

[0047] 3211, First water inlet; 3212, Limiting protrusion; 3213, Mesh cover; 32131, Water passage hole; 3214, First annular protrusion; 3215, First sealing groove;

[0048] 3221. Second water inlet; 3222. Guide groove; 3223. Support rib; 3224. Insert groove; 3225. Support structure; 3226. Second annular protrusion; 3227. Second sealing groove; 3228. Third sealing groove;

[0049] 10. Condensing heat exchanger; 20. Main heat exchanger; 30. Housing; 40. Fan; 50. Burner; 60. Water outlet pipe; 70. Flue gas pipe;

[0050] 101. Housing; 102. Heat exchange piping;

[0051] 1011. Cap; 1012. Air inlet; 1013. Exhaust outlet;

[0052] 10111, Condensate outlet; 10112, Heat exchanger inlet; 10113, Heat exchanger outlet;

[0053] 301. Water inlet; 302. Water outlet; 303. Gas inlet. Detailed Implementation

[0054] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0055] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Specifically, the terms "first position" and "second position" refer to two different positions.

[0056] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections 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.

[0057] Example 1

[0058] like Figures 1 to 7 As shown, this embodiment provides a condensate recovery and treatment device, which can solve the installation inconvenience caused by condensate discharge in gas water heaters, realize condensate recovery and utilization, save energy and protect the environment, simplify the structural design of condensate recovery, and reduce the manufacturing and maintenance costs of gas water heaters. The condensate recovery and treatment device includes a piping assembly 1, a mixing structure 2, and a purification structure 3.

[0059] Among them, see Figure 1 , Figure 2 and Figure 3 The piping assembly 1 includes an inlet water pipe 11 and a condensate water pipe 12. The inlet water pipe 11 is connected to the inlet of the condenser heat exchanger 10 of the gas water heater, and one end of the condensate water pipe 12 is connected to the condensate water outlet 10111 of the condenser heat exchanger 10 (e.g., ...). Figure 9 (As shown). A mixing structure 2 is installed in the inlet pipe 11. The mixing structure 2 has a connected inlet channel 21, a mixing chamber 22, and an outlet channel 23. The other end of the condensate pipe 12 is connected to the mixing chamber 22. The inlet channel 21 is at least partially located within the mixing chamber 22, and the cross-sectional area of ​​the portion of the inlet channel 21 within the mixing chamber 22 gradually decreases along the water flow direction. When water flows through the inlet channel 21 and into the mixing chamber 22, a negative pressure is generated within the mixing chamber 22, allowing water from the condensate pipe 12 to enter the mixing chamber 22. A purification structure 3 is installed in the condensate pipe 12 for purifying the condensate.

[0060] In the condensate recovery and treatment device provided in this embodiment, during the process of water flowing from the inlet pipe 11 to the condenser heat exchanger 10, the water flows through the mixing structure 2. Since the cross-sectional area of ​​the part of the inlet channel 21 located in the mixing chamber 22 gradually decreases along the direction of water flow, the water flow in the inlet channel 21 is accelerated at the position where the cross-sectional area decreases when the water flows through the inlet channel 21, thereby generating negative pressure in the mixing chamber 22, that is, generating the Venturi effect.

[0061] Since the condensate pipe 12 connects the condensate outlet 10111 of the condenser heat exchanger 10 and the mixing chamber 22, the condensate generated by the heat exchange in the condenser heat exchanger 10 will automatically enter the mixing chamber 22 under the negative pressure after entering the condensate pipe 12, and then be fed into the condenser heat exchanger 10 through the inlet pipe 11, so as to realize the recycling of condensate.

[0062] In other words, the mixing structure 2 enables automatic condensate recovery while water is flowing through the inlet pipe 11, eliminating the need for additional power structures. This simplifies the condensate recovery design, reduces manufacturing and maintenance costs, and improves operational reliability. Because the condensate is recovered, no external drain pipe or collection container is required during installation, preserving the original aesthetics and simplifying the installation process. It also saves installation space and is suitable for various installation environments, expanding the applicability of gas water heaters. Furthermore, the condensate recovery conserves water resources, further enhancing the energy efficiency and environmental friendliness of gas water heaters.

[0063] By installing a purification structure 3 on the condensate pipe 12, the condensate can be purified as it flows through the purification structure 3, such as filtering impurities and neutralizing the acidity or alkalinity of the condensate, so that the condensate meets the recycling requirements and improves the safety of users' water use.

[0064] In this embodiment, as Figure 1 and Figure 2 As shown, the mixing structure 2 is connected in series in the water inlet pipe 11. That is, the mixing structure 2 is directly installed on the water inlet pipe 11, so that the gas water heater automatically draws in condensate from the condensate pipe 12 while water is entering, thus realizing the recycling of condensate.

[0065] See Figure 2 A one-way control valve 121 is also installed on the condensate pipe 12. The one-way control valve 121 is located downstream of the purification structure 3, so that the condensate can only flow to the inlet pipe 11 of the gas water heater, and the water in the inlet pipe 11 cannot flow back to the purification structure 3, so as to avoid the condensate flowing back to the purification structure 3 due to system pressure fluctuations or shutdown.

[0066] See Figure 1 and Figure 2 A flow detection element 4 is installed on the water inlet pipe 11. The flow detection element 4 is used to detect the water flow speed and flow rate in the water inlet pipe 11 in real time, so as to remind the user to adjust the water temperature or turn off the gas water heater in time to prevent the gas water heater from being damaged due to excessive water flow. For example, the flow detection element 4 can be a flow sensor, flow meter, etc.

[0067] See Figure 3 and Figure 4The mixing chamber 22 is divided into an independent but interconnected inner water chamber 221 and an outer water chamber 222. The outlet of the inlet channel 21 is located in the inner water chamber 221, which is provided with a water passage hole 291 connecting to the outer water chamber 222. This arrangement allows a Venturi secondary acceleration effect to be generated between the inner water chamber 221 and the outer water chamber 222 through the water passage hole 291. When water flows through the inlet channel 21, a greater negative pressure can be formed in the mixing chamber 22, forcing the condensate in the condensate pipe 12 into the mixing chamber 22, thereby improving the condensate recovery efficiency. Figure 4 The arrows in the diagram indicate the direction of water flow.

[0068] In this embodiment, as Figure 3 As shown, a partition 29 is provided between the outer peripheral wall of the water inlet channel 21 and the inner wall of the mixing chamber 22. The partition 29 divides the mixing chamber 22 into an inner water chamber 221 and an outer water chamber 222. A water passage hole 291 is provided on the partition 29.

[0069] See Figure 3 The mixing structure 2 is equipped with a pipe connector 24. One end of the pipe connector 24 is connected to the external water chamber 222, and the other end is used to connect to the condensate pipe 12. The extension direction of the pipe connector 24 is set at an acute angle to the extension direction of the water inlet channel 21. This arrangement allows the flow direction of the condensate in the pipe connector 24 to form a smaller angle with the flow direction of the water in the water inlet channel 21, which is more conducive to the smooth intake of condensate into the mixing chamber 22.

[0070] In this embodiment, the pipe connector 24 is a straight pipe, and the condensate pipe 12 can be directly connected to the pipe connector 24 by sleeve or plug. In other embodiments, the pipe connector 24 can also be designed as a threaded connector, which is connected to the condensate pipe 12 by screwing.

[0071] Optionally, see Figure 3 The mixing structure 2 has a buffer chamber 25 between the mixing chamber 22 and the outlet channel 23. The buffer chamber 25 is connected to the mixing chamber 22 through a diversion channel 26, which extends towards the outlet channel 23, with the inlet end of the diversion channel 26 facing the outlet end of the inlet channel 21. When high-speed water flows into the mixing chamber 22 from the inlet channel 21, a negative pressure is generated in the mixing chamber 22. The condensate in the condensate pipe 12 is drawn into the mixing chamber 22 by the negative pressure and guided into the buffer chamber 25 through the diversion channel 26. This allows the water flow to diffuse and slow down in the buffer chamber 25, extending the water flow path and smoothing the water flow velocity gradient, thereby reducing energy loss and preventing the water flow from directly impacting the inner wall of the outlet channel 23, which would cause turbulence or local low pressure (cavitation). This improves the stability of the outlet water flow.

[0072] Furthermore, when the negative pressure in the mixing chamber 22 is too strong, the drainage channel 26 can automatically increase the discharge flow to prevent the vacuum from being too high and causing the ejector fluid (condensate) to stop flowing. When the negative pressure is insufficient, the water in the buffer chamber 25 is replenished by natural backflow through the pressure difference, which can maintain the negative pressure balance in the mixing chamber 22. The drainage channel 26 is designed to be arranged directly opposite the inlet channel 21, so that the water flow in the inlet channel 21 can directly reach the drainage channel 26, avoiding backflow or eddies and ensuring a stable outlet flow rate.

[0073] like Figure 3 As shown, the mixing structure 2 is equipped with an inlet connector 27 and an outlet connector 28, which are used to connect to the inlet pipe 11. The inlet connector 27 has an inlet channel 21, and the outlet connector 28 has an outlet channel 23. The inlet connector 27 and the outlet connector 28 allow the mixing structure 2 to directly connect to the inlet pipe 11, reducing additional connecting parts, simplifying the structure, and reducing installation difficulty. In this embodiment, both the inlet connector 27 and the outlet connector 28 are provided with threaded structures, and the inlet pipe 11 and the mixing structure 2 are fixed by screwing the threads, making the connection operation simple and convenient.

[0074] See Figure 5 , Figure 6 and Figure 7 The purification structure 3 includes an outer shell 31, a fixed cylinder assembly 32 disposed within the outer shell 31, and a filter element 33. The fixed cylinder assembly 32 is provided with a first chamber 3201 and a second chamber 3202 that are independent of each other and can communicate with each other. The first chamber 3201 is provided with a first water inlet 3211 that communicates with the second chamber 3202. The second chamber 3202 is provided with a second water inlet 3221 that communicates with the inner cavity of the outer shell 31. The water level at the first water inlet 3211 is higher than the water level at the second water inlet 3221. The filter element 33 is located in the first chamber 3201 and is used to filter condensate and / or react with condensate.

[0075] Condensate enters the first chamber 3201 through the inlet of the outer casing 31, then flows through the filter element 33. The filter element 33 filters out impurities in the condensate and / or reacts with the condensate to remove impurities and harmful substances (such as acids), thus purifying the condensate to meet recycling or discharge requirements. The condensate treated by the filter element 33 in the first chamber 3201 enters the second chamber 3202 through the first inlet 3211, then enters the inner cavity of the outer casing 31 through the second inlet 3221, and finally exits from the outlet of the outer casing 31. Figure 6 The arrows in the diagram indicate the direction of condensate flow.

[0076] Because the water level at the first inlet 3211 of the first chamber 3201 is higher than the water level at the second inlet 3221 of the second chamber 3202, the condensate in the first chamber 3201 must be stored for a certain amount before flowing from the first inlet 3211 to the second chamber 3202. This allows sufficient contact time (reaction time) between the condensate and the filter element 33, extending the flow path of the condensate, effectively filtering out impurities and harmful substances, and thus improving the purification effect of the condensate. When recycling condensate, for example, when the purified condensate is fed into the water system of a gas water heater, it ensures that the water output by the gas water heater is clean. Users will not experience skin irritation when using the water, such as for bathing or washing, thus improving water safety.

[0077] Optionally, the filter element 33 includes an acid-base neutralizing material capable of neutralizing and adjusting the pH of the condensate to prevent it from being corrosive. Exemplarily, the acid-base neutralizing material can be at least one of magnesium oxide, magnesium hydroxide, calcium carbonate, etc., or it can be a material such as an ion exchange resin, as long as it can perform both filtration and acid-base neutralization functions. In other embodiments, the filter element 33 may also include a filter cartridge.

[0078] See Figure 5 , Figure 6 and Figure 7 The fixed cylinder assembly 32 includes a first fixed cylinder 321 and a second fixed cylinder 322. The second fixed cylinder 322 is spaced outside the first fixed cylinder 321. A first chamber 3201 is formed inside the first fixed cylinder 321, and a second chamber 3202 is defined between the second fixed cylinder 322 and the first fixed cylinder 321. That is, the second chamber 3202 surrounds the first chamber 3201. A first water inlet 3211 is provided through the cylinder wall of the first fixed cylinder 321, and a second water inlet 3221 is provided through the cylinder wall of the second fixed cylinder 322. This arrangement can effectively extend the flow path of the condensate, increase the contact reaction time between the condensate and the filter element 33, and ensure the purification effect of the condensate.

[0079] In some other embodiments, the fixed cylinder assembly 32 may be designed such that a third fixed cylinder is provided inside the third fixed cylinder, which is provided with a partition structure to divide the third fixed cylinder into a first chamber 3201 and a second chamber 3202. This can also extend the flow path of the condensate and improve the purification effect of the condensate.

[0080] See Figure 5 and Figure 7The first fixed cylinder 321 has a first water outlet area, within which multiple first water inlets 3211 are arranged circumferentially. The second fixed cylinder 322 has a second water outlet area, within which multiple second water inlets 3221 are arranged circumferentially. The water level in the first water outlet area is higher than that in the second water outlet area, ensuring that the condensate can be temporarily stored in the first chamber 3201 for a sufficient time. The arrangement of multiple first water inlets 3211 can better control the flow rate of the condensate, ensuring sufficient contact time between the condensate and the filter element 33, thus guaranteeing the condensate treatment effect. At the same time, the presence of multiple first water inlets 3211 allows the condensate purified by the filter element 33 in the first chamber 3201 to enter the second chamber 3202 evenly from the circumference, improving the flow stability of the condensate. The presence of multiple second water inlets 3221 allows the purified condensate to flow from all sides into the inner cavity of the outer shell 31, improving the stability of the condensate output flow.

[0081] In this embodiment, the first water outlet area is an annular area arranged circumferentially along the first fixed cylinder 321. Multiple rings of first water inlets 3211 are arranged axially, each ring including multiple circumferentially spaced first water inlets 3211, allowing the first fixed cylinder 321 to discharge water through multiple channels circumferentially in the first water outlet area, resulting in more uniform water discharge. The second water outlet area is an annular area arranged circumferentially along the second fixed cylinder 322. Multiple rings of second water inlets 3221 are arranged axially, each ring including multiple circumferentially spaced second water inlets 3221, allowing the second fixed cylinder 322 to discharge water through multiple channels circumferentially in the second water outlet area, resulting in more uniform water discharge.

[0082] See Figure 5 and Figure 7 When the fixed cylinder assembly 32 includes a first fixed cylinder 321 and a second fixed cylinder 322, one of the first fixed cylinder 321 and the second fixed cylinder 322 is provided with a limiting protrusion 3212, and the other is provided with a limiting groove. The limiting protrusion 3212 is engaged with the limiting groove to limit the relative position of the first fixed cylinder 321 and the second fixed cylinder 322. The cooperation between the limiting protrusion 3212 and the limiting groove can limit the relative movement of the first fixed cylinder 321 and the second fixed cylinder 322, ensuring that the filter element 33 is stably installed in the first fixed cylinder 321, thereby ensuring the treatment effect of condensate.

[0083] In this embodiment, the outer wall of the first fixed cylinder 321 is provided with the aforementioned limiting protrusion 3212. The limiting protrusion 3212 can be engaged with one of the second water inlets 3221 on the second fixed cylinder 322. That is, one of the second water inlets 3221 acts as a limiting groove and engages with the limiting protrusion 3212, thereby limiting the relative installation position of the first fixed cylinder 321 and the second fixed cylinder 322. There is no need to separately process the limiting groove, which simplifies the processing steps of the second fixed cylinder 322.

[0084] Of course, in other embodiments, a limiting groove can be provided on the first fixed cylinder 321 and a limiting protrusion 3212 can be provided on the second fixed cylinder 322, as long as the relative installation positions of the first fixed cylinder 321 and the second fixed cylinder 322 can be limited.

[0085] See Figure 7 The inner wall of the second fixed cylinder 322 is provided with a guide groove 3222, which extends to the area where the second water inlet 3221 is located. When assembling the first fixed cylinder 321 and the second fixed cylinder 322, the limiting protrusion 3212 is aligned with the guide groove 3222 and inserted, allowing the limiting protrusion 3212 to slide along the guide groove 3222 until it engages with one of the second water inlets 3221 (limiting groove), at which point the two are installed in place. The guide groove 3222 can position the relative installation positions of the first fixed cylinder 321 and the second fixed cylinder 322, ensuring that the limiting protrusion 3212 can accurately engage with the limiting groove, reducing the difficulty of assembly.

[0086] For example, the inner wall of the second fixed cylinder 322 is provided with two guide grooves 3222 at intervals, and the outer wall of the first fixed cylinder 321 is provided with two limiting protrusions 3212. The two limiting protrusions 3212 and the two guide grooves 3222 are slidably engaged in a one-to-one correspondence, thereby improving the positioning accuracy of the first fixed cylinder 321 and the second fixed cylinder 322.

[0087] See Figure 5 and Figure 7 The top of the first fixed cylinder 321 is provided with a mesh cover 3213, and the mesh cover 3213 is provided with multiple water passage holes 32131 communicating with the first chamber 3201. The multiple water passage holes 32131 allow condensate to enter the first chamber 3201 evenly and dispersedly, improving filtration efficiency. At the same time, it can prevent local water flow from concentrating and scouring the filter element 33, extending the service life of the filter element 33 and reducing the replacement frequency and maintenance cost of the filter element 33. In addition, the mesh cover 3213 and the multiple water passage holes 32131 can also prevent larger impurities from entering the first chamber 3201, avoiding blockage.

[0088] See Figure 5 and Figure 7 The first fixed cylinder 321 has a first sealing element 323 at one end near the water inlet side. The outer wall of the first fixed cylinder 321 is sealed to the inner wall of the second fixed cylinder 322 through the first sealing element 323. This arrangement ensures that the condensate entering from the water inlet side of the outer casing 31 can only flow into the first chamber 3201 of the first fixed cylinder 321, preventing unfiltered condensate from entering the second chamber 3202 and ensuring the purification effect of the condensate.

[0089] In this embodiment, the first fixed cylinder 321 has two spaced-apart first annular protrusions 3214 at one end near the water inlet side of the outer casing 31. A first sealing groove 3215 is formed between the two first annular protrusions 3214. A first sealing member 323 is engaged in the first sealing groove 3215 and makes sealing contact with the inner wall of the second fixed cylinder 322, thereby achieving a sealing fit between the first fixed cylinder 321 and the second fixed cylinder 322. In addition, the first annular protrusions 3214 can maintain a certain distance between the outer wall of the first fixed cylinder 321 and the inner wall of the second fixed cylinder 322, thereby forming a second chamber 3202 to facilitate the flow of condensate.

[0090] See Figure 5 and Figure 7 The second fixed cylinder 322 has a second sealing element 324 at one end near the water inlet side of the outer casing 31. The outer wall of the second fixed cylinder 322 is sealed to the inner wall of the outer casing 31 through the second sealing element 324. This arrangement prevents condensate from flowing into the outside of the second fixed cylinder 322, ensuring that condensate can only enter the first fixed cylinder 321 and be filtered by the filter element 33, further guaranteeing the condensate treatment effect.

[0091] In this embodiment, the second fixed cylinder 322 has two spaced second annular protrusions 3226 at one end near the water inlet side of the outer shell 31. A second sealing groove 3227 is formed between the two second annular protrusions 3226. The second sealing member 324 is engaged in the second sealing groove 3227 and makes sealing contact with the inner wall of the outer shell 31, thereby achieving a sealing fit between the second fixed cylinder 322 and the inner wall of the outer shell 31.

[0092] For example, both the first sealing element 323 and the second sealing element 324 are sealing rings, such as O-rings, V-rings, rectangular rings, etc., as long as they can provide a good sealing effect.

[0093] See Figure 5 and Figure 7 The purification structure 3 also includes filter cylinders 34, which are spaced out from the fixed cylinder assembly 32. Specifically, the filter cylinders 34 are spaced out from the second fixed cylinder 322. Condensate flows out through the second water inlet 3221 and enters the space between the filter cylinders 34 and the second fixed cylinder 322. The condensate is further filtered by the filter cylinders 34 before entering the outer casing 31, which can further improve the purification effect of the condensate. At the same time, the presence of the filter cylinders 34 can further control the flow rate of the condensate, ensuring that the condensate can fully contact the filter element 33 in the first fixed cylinder 321. For example, the filter cylinder 34 is a filter screen cylinder structure with a filtration accuracy greater than that of the filter element 33.

[0094] See Figure 7The fixed cylinder assembly 32 has multiple supporting ribs 3223 spaced circumferentially, which can contact the inner wall of the filter cylinder 34. The multiple supporting ribs 3223 stably support the filter cylinder 34, prevent deformation, and maintain a fixed distance between the filter cylinder 34 and the fixed cylinder assembly 32, reserving sufficient flow space for condensate to effectively filter it. In this embodiment, the multiple supporting ribs 3223 are evenly distributed circumferentially on the outer peripheral wall of the second fixed cylinder 322, ensuring both the stability of the filter cylinder 34 and uniformly strengthening the structural strength of the second fixed cylinder 322.

[0095] See Figure 5 and Figure 7 The second fixed cylinder 322 is provided with a third sealing element 325 at both ends, and the outer wall of the second fixed cylinder 322 is sealed to the inner wall of the filter cylinder 34 through the third sealing element 325. This arrangement prevents condensate from directly entering the outer shell 31 from both ends of the filter cylinder 34, ensuring that all condensate is filtered by the filter cylinder 34 before entering the outer shell 31, thus guaranteeing the filtration effect of the condensate.

[0096] In this embodiment, the second fixed cylinder 322 has three second annular protrusions 3226 spaced around its end near the water inlet side of the outer casing 31. These three protrusions form two sealing grooves. The upper sealing groove is a second sealing groove 3227 for accommodating the second sealing element 324, and the lower sealing groove is defined as a third sealing groove 3228 for accommodating the third sealing element 325. The second fixed cylinder 322 has two second annular protrusions 3226 spaced around its end near the water outlet side of the outer casing 31. A third sealing groove 3228 is formed between the two protrusions, and a third sealing element 325 is installed within this groove. The third sealing elements 325 at both ends of the second fixed cylinder 322 make sealing contact with the inner wall of the filter cylinder 34, achieving a sealed fit between the second fixed cylinder 322 and the inner wall of the filter cylinder 34. Simultaneously, the second annular protrusions 3226 also maintain a certain distance between the outer wall of the second fixed cylinder 322 and the inner wall of the filter cylinder 34, facilitating the flow of condensate.

[0097] Optionally, see Figure 5 and Figure 7 The purification structure 3 also includes a magnetic suction element 35 disposed on the fixed cylinder assembly 32. The magnetic suction element 35 is used to adsorb magnetic substances in the condensate water. The magnetic suction element 35 can effectively remove magnetic impurities in the condensate water, such as Fe2O3 (rust), Fe3O4 (magnetic iron oxide), and metal wear particles (such as iron filings detached from the water pump / pipe), preventing magnetic substances from damaging precision components such as water pumps and solenoid valves, reducing the failure rate of gas water heaters, and improving the stability and reliability of use.

[0098] See Figure 5The fixed cylinder assembly 32 is provided with an insert groove 3224, and the magnetic attractor 35 is embedded in the insert groove 3224. In this embodiment, the insert groove 3224 is located at the bottom of the second fixed cylinder 322, so that the magnetic attractor 35 can be directly aligned with the filter element 33 in the first fixed cylinder 321, which can better attract magnetic substances in the condensate. Exemplarily, the magnetic attractor 35 can be a permanent magnet (such as a neodymium magnet) or an electromagnet.

[0099] See Figure 5 and Figure 7 The bottom end of the fixed cylinder assembly 32 is provided with a support structure 3225, which can support and abut against the inner wall of the outer shell 31. When the fixed cylinder assembly 32 is installed into the outer shell 31, the top of the fixed cylinder assembly 32 abuts against the inner wall of the outer shell 31 near the water inlet side, and the bottom of the fixed cylinder assembly 32 abuts against the inner wall of the outer shell 31 near the water outlet side through the support structure 3225, so that the fixed cylinder assembly 32 is stably fixed in the outer shell 31.

[0100] In this embodiment, the support structure 3225 includes a plurality of support pieces spaced circumferentially on the second fixed cylinder 322. After the first fixed cylinder 321 and the second fixed cylinder 322 are assembled, when they are installed into the outer shell 31, the plurality of support pieces abut against the inner circumferential wall of the outer shell 31 near the water outlet side, so that the fixed cylinder assembly 32 is placed in the center inside the outer shell 31, ensuring that the water inlet end of the fixed cylinder assembly 32 is directly opposite the water inlet of the outer shell 31.

[0101] See 5. Figure 6 and Figure 7 The outer casing 31 includes a first cylindrical portion 311 and a second cylindrical portion 312. The ends of the first cylindrical portion 311 and the second cylindrical portion 312 facing each other are sleeved together, facilitating assembly and disassembly, thereby making it easy to replace and clean the internal filter cartridge 34 and filter element 33. In this embodiment, the first cylindrical portion 311 is threaded onto the second cylindrical portion 312, ensuring a reliable connection and convenient assembly / disassembly. Furthermore, a fourth sealing element 313 is provided at the sleeve joint of the first cylindrical portion 311 and the second cylindrical portion 312, enabling a sealed connection between the first cylindrical portion 311 and the second cylindrical portion 312 to prevent water leakage. Exemplarily, the fourth sealing element 313 is a sealing ring.

[0102] Optionally, the first cylindrical portion 311 has a water inlet connection 3111 at the end facing away from the second cylindrical portion 312, and the water inlet connection 3111 has a water inlet. The second cylindrical portion 312 has a water outlet connection 3121 at the end facing away from the first cylindrical portion 311, and the water outlet connection 3121 has a water outlet. The water inlet connection 3111 and the water outlet connection 3121 are used to connect to the condensate pipe 12. Alternatively, the water inlet connection 3111 can be directly connected to the condensate outlet 10111 of the condenser heat exchanger 10 of the gas water heater, and the water outlet connection 3121 can be connected to the condensate pipe 12.

[0103] In this embodiment, both the inlet connection 3111 and the outlet connection 3121 have threaded structures, and the condensate recovery and treatment device can be connected to the condensate pipeline 12 by screwing the threads, making the connection operation convenient.

[0104] See Figure 7 The outer casing 31 has a sealing joint 314 at its outlet, which is sealed and inserted into the outlet of the outer casing 31. Specifically, a fifth sealing element is fitted onto the sealing joint 314, and the fifth sealing element makes sealing contact with the wall surface at the outlet of the outer casing 31 to prevent leakage. Further, the sealing joint 314 has a threaded connection portion 3141 for connecting to a condensate water delivery pipeline. Exemplarily, the fifth sealing element is a sealing ring.

[0105] Example 2

[0106] This embodiment provides a condensate recovery and treatment device, which differs from Embodiment 1 in that:

[0107] like Figure 8 As shown, the water inlet pipe 11 includes a first pipe 111 and a second pipe 112 connected in parallel. The mixing structure 2 is disposed on either the first pipe 111 or the second pipe 112. During the water inlet process of the water inlet pipe 11, part of the water flows through the first pipe 111 to the condensing heat exchanger 10, and the other part of the water flows through the second pipe 112 to the condensing heat exchanger 10. Since the mixing structure 2 is selectively disposed on either the first pipe 111 or the second pipe 112, the total water inlet volume of the water inlet pipe 11 can be ensured to be sufficient, avoiding the problem of limited water flow in the water inlet pipe 11 due to the interception of the water by the mixing structure 2. This meets the water demand of users when they need to use a large amount of water and improves the reliability of the gas water heater.

[0108] In this embodiment, the mixing structure 2 is installed on the first pipe 111, and the second pipe 112 remains unobstructed, which can meet the needs of large-flow water intake. Of course, in other embodiments, the mixing structure 2 can also be installed on the second pipe 112.

[0109] Example 3

[0110] This embodiment provides a gas water heater, including a condenser heat exchanger 10 and a condensate recovery and treatment device as described in any of the above embodiments. The condensate recovery and treatment device is used to recover and treat the condensate generated by the condenser heat exchanger 10.

[0111] By installing a condensate recovery and treatment device on the gas water heater, the condensate generated by the condenser heat exchanger 10 can be treated and recycled, eliminating the need to discharge condensate. This avoids the need to consider condensate discharge when installing a gas water heater and also avoids the problem of frequently emptying and cleaning condensate due to additional condensate collection. It reduces the installation difficulty of the gas water heater, improves its practicality, makes reasonable use of condensate, saves water resources, reduces operating costs, and provides a better user experience.

[0112] Optionally, see Figure 1 , Figure 2 and Figure 9 The gas water heater also includes a main heat exchanger 20, a housing 30, a fan 40, a burner 50, and a water outlet pipe 60. The condensing heat exchanger 10, the main heat exchanger 20, the fan 40, and the burner 50 are all located inside the housing 30. The housing 30 is equipped with a water inlet 301, a water outlet 302, and a gas inlet 303. One end of the water inlet pipe 11 is connected to the water inlet 301, and the other end is connected to the heat exchange inlet 10112 of the condensing heat exchanger 10. One end of the water outlet pipe 60 is connected to the water outlet 302, and the other end is connected to the water outlet of the main heat exchanger 20. The water inlet of the main heat exchanger 20 is connected to the heat exchange outlet 10113 of the condensing heat exchanger 10. The air inlet of the fan 40 is connected to the exhaust port of the main heat exchanger 20, and the air outlet of the fan 40 is connected to the air inlet 1012 of the condensing heat exchanger 10. The burner 50 is located below the main heat exchanger 20 and is used to provide heat to the main heat exchanger 20.

[0113] Cold water enters the main heat exchanger 20 via the inlet pipe 11 and the condenser heat exchanger 10 to complete the first heat exchange. The resulting hot water is discharged to the user via the outlet pipe 60. The high-temperature flue gas generated by the burner 50 forms medium-temperature flue gas after completing the first heat exchange in the main heat exchanger 20. Under the action of the fan 40, the medium-temperature flue gas is introduced into the condenser heat exchanger 10 for a second heat exchange, so that the water in the inlet pipe 11 is preheated at the condenser heat exchanger 10, making full use of the heat generated by the burner 50 and improving the heat exchange efficiency. The condensate generated during the heat exchange process in the condenser heat exchanger 10 enters the condensate pipe 12 via the condensate outlet 10111 and is purified by the purification structure 3. The purified condensate enters the inlet pipe 11 under the negative pressure generated by the mixing structure 2, thereby achieving zero discharge and purification of condensate.

[0114] like Figure 1 and Figure 2 As shown, the casing 30 is also equipped with a flue pipe 70, and the flue gas after heat exchange in the condenser heat exchanger 10 is discharged through the flue pipe 70.

[0115] Optionally, see Figure 9The condensing heat exchanger 10 includes a housing 101 and heat exchange pipes 102 disposed within the housing 101. The heat exchange pipes 102 are connected to the water inlet pipe 11 of the gas water heater. An air inlet 1012 is provided on the housing 101, which is used to connect to the flue gas outlet of the main heat exchanger 20. When the fan 40 is working, the medium-temperature flue gas after one heat exchange in the main heat exchanger 20 is introduced into the housing 101 of the condensing heat exchanger 10, so that the medium-temperature flue gas exchanges heat with the water in the heat exchange pipes 102. Furthermore, an exhaust port 1013 is also provided on the housing 101, which is connected to the exhaust pipe 70. The flue gas after heat exchange within the housing 101 is discharged through the exhaust pipe 70.

[0116] See Figure 9 The housing 101 is provided with a condensate outlet 10111, and the condensate pipe 12 is connected to the condensate outlet 10111. Specifically, the bottom of the housing 101 has an opening, and a cover 1011 is provided at the opening. The cover 1011 is provided with a condensate outlet 10111, a heat exchange inlet 10112, and a heat exchange outlet 10113. One end of the heat exchange pipe 102 is connected to the heat exchange inlet 10112, and the other end is connected to the heat exchange outlet 10113. The heat exchange inlet 10112 is then connected to the inlet pipe 11 of the gas water heater, and the heat exchange outlet 10113 is then connected to the inlet of the main heat exchanger 20 through a pipe, forming a complete water circulation.

[0117] Note that 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. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A condensate recovery and treatment device, characterized in that, include: Piping assembly (1) includes inlet pipe (11) and condensate pipe (12). The inlet pipe (11) is connected to the inlet of the condenser heat exchanger (10) of the gas water heater, and one end of the condensate pipe (12) is connected to the condensate outlet (10111) of the condenser heat exchanger (10). A mixing structure (2) is provided in the inlet pipe (11). The mixing structure (2) is provided with a connected inlet channel (21), a mixing chamber (22), and an outlet channel (23). The other end of the condensate pipe (12) is connected to the mixing chamber (22). The inlet channel (21) is at least partially located in the mixing chamber (22), and the cross-sectional area of ​​the part of the inlet channel (21) located in the mixing chamber (22) gradually decreases along the water flow direction. When the water flows through the inlet channel (21) and through the mixing chamber (22), a negative pressure can be generated in the mixing chamber (22) so that the water in the condensate pipe (12) enters the mixing chamber (22). The purification structure (3) is installed in the condensate pipe (12) and is used to purify the condensate.

2. The condensate recovery and treatment device according to claim 1, characterized in that, The mixing structure (2) is connected in series in the water inlet pipe (11); Alternatively, the water inlet pipe (11) may include a first pipe (111) and a second pipe (112) arranged in parallel, and the mixing structure (2) may be disposed in the first pipe (111) or the second pipe (112).

3. The condensate recovery and treatment device according to claim 1, characterized in that, The mixing chamber (22) is divided into an inner water chamber (221) and an outer water chamber (222) that are independent of each other and can be connected. The outlet end of the water inlet channel (21) is located in the inner water chamber (221). The inner water chamber (221) is provided with a water passage (291) that connects to the outer water chamber (222).

4. The condensate recovery and treatment device according to claim 3, characterized in that, The mixing structure (2) is provided with a pipe joint (24). One end of the pipe joint (24) is connected to the outer water cavity (222), and the other end is used to connect to the condensate pipe (12). The extension direction of the pipe joint (24) is set at an acute angle to the extension direction of the water inlet channel (21).

5. The condensate recovery and treatment device according to claim 1, characterized in that, The mixing structure (2) has a buffer chamber (25) between the mixing chamber (22) and the outlet channel (23). The buffer chamber (25) is connected to the mixing chamber (22) through a diversion channel (26). The diversion channel (26) extends towards the outlet channel (23), and the inlet end of the diversion channel (26) is directly opposite to the outlet end of the inlet channel (21). And / or, the mixing structure (2) is provided with an inlet connector (27) and an outlet connector (28), the inlet connector (27) and the outlet connector (28) are used to connect to the inlet pipe (11), the inlet connector (27) is provided with the inlet channel (21), and the outlet connector (28) is provided with the outlet channel (23).

6. The condensate recovery and treatment apparatus according to any one of claims 1-5, characterized in that, The purification structure (3) includes an outer shell (31), a fixed cylinder assembly (32) disposed within the outer shell (31), and a filter element (33). The fixed cylinder assembly (32) is provided with a first chamber (3201) and a second chamber (3202) that are independent of each other and can communicate with each other. The first chamber (3201) is provided with a first water inlet (3211) that communicates with the second chamber (3202). The second chamber (3202) is provided with a second water inlet (3221) that communicates with the inner cavity of the outer shell (31). The water level at the first water inlet (3211) is greater than the water level at the second water inlet (3221). The filter element (33) is located in the first chamber (3201) and is used to filter condensate and / or react with condensate.

7. The condensate recovery and treatment device according to claim 6, characterized in that, The fixed cylinder assembly (32) includes a first fixed cylinder (321) and a second fixed cylinder (322). The second fixed cylinder (322) is spaced outside the first fixed cylinder (321). The first fixed cylinder (321) forms the first chamber (3201). The second fixed cylinder (322) and the first fixed cylinder (321) define the second chamber (3202). Alternatively, the fixed cylinder assembly (32) may include a third fixed cylinder, which is provided with a partition structure to separate the first chamber (3201) and the second chamber (3202) within the third fixed cylinder.

8. The condensate recovery and treatment device according to claim 7, characterized in that, When the fixed cylinder assembly (32) includes a first fixed cylinder (321) and a second fixed cylinder (322), one of the first fixed cylinder (321) and the second fixed cylinder (322) is provided with a limiting protrusion (3212) and the other is provided with a limiting groove. The limiting protrusion (3212) is engaged in the limiting groove to limit the relative position of the first fixed cylinder (321) and the second fixed cylinder (322).

9. The condensate recovery and treatment device according to claim 6, characterized in that, The purification structure (3) further includes a filter cartridge (34), which is spaced out from the fixed cartridge assembly (32); And / or, the purification structure (3) further includes a magnetic suction element (35) disposed on the fixed cylinder assembly (32), the magnetic suction element (35) being used to adsorb magnetic substances in the condensate.

10. A gas-fired water heater, characterized in that, It includes a condenser heat exchanger (10) and a condensate recovery and treatment device as described in any one of claims 1-9, the condensate recovery and treatment device being used to recover and treat the condensate generated by the condenser heat exchanger (10).

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