Condensing gas water heater, condensed water control device and method

Abstract

The present invention discloses a condensing gas water heater, a condensed water control device and a method. During the condensed water control process, when the water level in the condensed water pipe reaches a preset water level, the control component is started to drive the first sealing part to move back and forth in the working chamber. At the same time, the one-way control function of the first control valve and the second control valve is utilized to stably absorb the condensed water in the condensed water pipe and eventually flow into the inlet and outlet water pipes. This effectively controls the recycling of the condensed water, eliminates the need to discharge the condensed water to the outside and reserve a channel for discharging the condensed water, and is conducive to improving the user experience of the product. When the first sealing part moves in a direction away from the first interface, the space of the second split cavity is compressed. At this time, under the one-way control action of the first control valve, the condensed water in the second split cavity is pressed into and retained in the first split cavity for use in the next discharge.

Description

Technical Field

[0001] The present invention relates to the technical field of condensed water control, and in particular to a condensing gas water heater, a condensed water control device and a method. Background Art

[0002] To achieve Class 1 energy efficiency, existing condensing gas water heaters typically utilize condensed water vapor in flue gas to improve energy efficiency. Therefore, condensing gas water heaters have an additional condensate drain port compared to conventional water heaters. However, most users do not reserve a condensate drain before purchasing a water heater, resulting in a decrease in the purchase of condensing gas water heaters and a slowdown in the promotion of energy conservation and emission reduction.

[0003] To this end, current products primarily use atomizers to atomize the condensed water and then expel it from the exhaust pipe along with the flue gas. However, this method results in a large amount of mist being discharged from the exhaust pipe, which can easily lead to complaints from other users and affect the user experience. Furthermore, when used in colder temperatures, such as in northern winter, the misty flue gas can turn into water or ice as soon as it reaches the exhaust port, blocking the exhaust pipe and affecting the normal operation of the water heater. Summary of the Invention

[0004] Based on this, the first technical problem solved by the present invention is to provide a condensed water control device, which does not need to discharge the condensed water, effectively recycles and utilizes the condensed water, and improves the product user experience.

[0005] The second technical problem solved by the present invention is to provide a condensing gas water heater that does not need to discharge condensed water, effectively recycles and utilizes condensed water, and improves the user experience of the product.

[0006] The third technical problem solved by the present invention is to provide a condensed water control method, which does not need to discharge the condensed water, effectively recycles and utilizes the condensed water, and improves the product user experience.

[0007] The technical solution is as follows:

[0008] The first technical problem mentioned above is solved by the following technical solution:

[0009] A condensate control device, the condensate control device comprising: a shell, a first interface and a second interface being provided on the shell at intervals, the second interface being used to communicate with a condensate pipe, a working chamber being provided in the shell; a moving component, the moving component comprising a first sealing portion and a first control valve provided on the first sealing portion, the first sealing portion being sealed in cooperation with the cavity wall of the working chamber and dividing the working chamber into a first split cavity and a second split cavity, the first interface being communicated with the first split cavity, the first control valve being used to control the condensate to flow from the second split cavity into the first split cavity in one direction; a second control valve, the second control valve being located in the second interface and being used to control the condensate to flow from the second interface into the second split cavity in one direction; a control component and an inlet and outlet water pipe, the control component being used to drive the first sealing portion to move back and forth in the working chamber, and to control the condensate flowing out of the first interface to flow into the inlet and outlet water pipe.

[0010] The condensate control device of the present invention offers advantages over the prior art. During the condensate control process, when the water level in the condensate pipe reaches a preset level, the control assembly is activated, driving the first sealing portion to reciprocate within the working chamber. As the first sealing portion moves toward the first interface, the space within the second sub-chamber increases, creating a certain negative pressure. Because the second control valve allows condensate to flow unidirectionally from the second interface into the second sub-chamber, condensate in the second interface is drawn unidirectionally into the second sub-chamber under the negative pressure. Simultaneously, the space within the first sub-chamber is compressed. Furthermore, because the first control valve provides unidirectional flow control, condensate in the first sub-chamber (i.e., condensate retained from the previous operation) is forced out of the first interface by the first sealing portion and the first control valve and ultimately flows into the inlet and outlet pipes under the control of the control assembly. This effectively controls condensate recycling, eliminating the need for external condensate discharge or reserved condensate drainage channels, thereby enhancing the user experience of the product. As the first sealing portion moves away from the first interface, the space in the second sub-chamber is compressed. At this time, under the one-way control of the first control valve, the condensed water in the second split cavity is pressed into and stored in the first split cavity to be used for next discharge.

[0011] The principle and effect of the present invention are further explained below in conjunction with the above scheme:

[0012] In one embodiment, an operating chamber is further provided in the shell and is spaced apart from the working chamber. The moving component also includes a sliding member connected to the first sealing portion, one end of the sliding member is movable in the operating chamber, and a third interface connected to the operating chamber is provided on the shell. The control component is used to control the water flow in the inlet and outlet pipes to selectively flow into the first interface and the third interface.

[0013] In one embodiment, the moving component also includes a second sealing portion connected to the sliding member, the second sealing portion is sealed with the cavity wall of the operating cavity, and the operating cavity is divided into a third split cavity and a fourth split cavity along the moving direction of the sliding member, the fourth split cavity is connected to the third interface, and the shell is provided with a pressure stabilizing port connected to the third split cavity.

[0014] In one embodiment, the control component includes a driving member, a valve core and a valve body, and the valve body is provided with a water inlet end, a water outlet end, a fourth interface and a fifth interface, the fourth interface and the fifth interface are respectively connected to the first interface and the third interface, the valve core is located in the valve body, and the driving member is used to drive the valve core to move so that the water inlet end and the water outlet end are respectively switched and connected between the fourth interface and the fifth interface, and the water inlet end and the water outlet end are both connected to the inlet and outlet pipes.

[0015] In one embodiment, a slide groove is provided in the valve body, at least three partitions are provided on the valve core, and a first channel and a second channel are formed in sequence between the valve core and the groove wall of the slide groove, and a first opening and a second opening are provided on the valve body, respectively located on both sides of the water inlet end, and the first opening and the second opening are both connected to the water outlet end; when the driving member drives the valve core to move to the first position, the first opening, the first channel and the fifth interface are connected in sequence, and the water inlet end, the second channel and the fourth interface are connected in sequence; when the driving member drives the valve core to move to the second position, the water inlet end, the first channel and the fifth interface are connected in sequence, and the second opening, the second channel and the fourth interface are connected in sequence.

[0016] In one embodiment, the inlet and outlet water pipes are provided with a water inlet section, a contraction section and a throat section which are connected in sequence, the cross-sectional area S1 of the water inlet section is larger than the cross-sectional area S2 of the throat section, the cross-sectional area S3 of the contraction section decreases from one end of the contraction section close to the water inlet section to the end of the contraction section close to the throat section, the water inlet end is connected to the water inlet section, and the water outlet end is connected to the throat section.

[0017] In one embodiment, a mounting groove is provided on a side surface of the sliding member facing the first split cavity, a water inlet hole is provided on the portion of the sliding member located in the second split cavity, the first control valve is installed in the mounting groove, and is used to control the condensed water to flow into the mounting groove in one direction from the water inlet hole.

[0018] In one embodiment, a partition is formed between the working chamber and the operating chamber, and a guide hole for the sliding member to pass through is provided on the partition, and the sliding member is sealed with the hole wall of the guide hole.

[0019] In one embodiment, the first control valve is a first one-way valve or a switch valve with automatic opening and closing functions.

[0020] In one embodiment, the second control valve is a second one-way valve or a switch valve with automatic opening and closing functions.

[0021] The second technical problem mentioned above is solved by the following technical solution:

[0022] A condensing gas water heater comprises a condenser and any one of the above-mentioned condensed water control devices, wherein the condensed water pipe of the condenser is connected to the second interface.

[0023] The condensing gas water heater of the present invention has the following advantages compared to the prior art: Using the above-described condensate control device, during the condensate control process, when the water level in the condensate pipe reaches a preset level, the control assembly is activated, driving the first sealing portion to reciprocate within the working chamber. Specifically, as the first sealing portion moves toward the first interface, the space within the second sub-chamber increases, creating a certain negative pressure. Because the second control valve allows condensate to flow unidirectionally from the second interface into the second sub-chamber, condensate in the second interface is unidirectionally drawn into the second sub-chamber under the action of the negative pressure. Simultaneously, the space within the first sub-chamber is compressed. Furthermore, because the first control valve provides unidirectional flow control, condensate in the first sub-chamber (i.e., condensate retained from the previous operation) is forced out of the first interface by the first sealing portion and the first control valve, and ultimately flows into the inlet and outlet pipes under the action of the control assembly. This effectively controls condensate recycling, eliminating the need to drain condensate or reserve a channel for condensate drainage, thereby enhancing the user experience of the product. When the first sealing portion moves away from the first interface, the space in the second sub-cavity is compressed. At this time, under the one-way control of the first control valve, the condensed water in the second sub-cavity is pressed into and stored in the first sub-cavity for subsequent discharge.

[0024] In one embodiment, the condensing gas water heater further includes a filtering device, which is replaceably disposed between the condenser and the condensed water control device for filtering the condensed water.

[0025] In one embodiment, the condensing gas water heater further includes a neutralization device, which is used to neutralize the acidity of the condensed water.

[0026] In one embodiment, the condensing gas water heater further includes a water level detector, which is used to detect the water level in the condensing water pipe.

[0027] The third technical problem mentioned above is solved by the following technical solution:

[0028] A condensate control method adopts the condensate control device described in any one of the above, including the following steps: obtaining the real-time water level of the condensate in the condensate pipe; if the real-time water level reaches the preset water level, controlling the first sealing part to move back and forth in the working chamber through the control component; according to the movement direction of the first sealing part in the working chamber, through the unidirectional control of the first control valve and the second control valve, the condensate in the second interface flows unidirectionally into the second split chamber, the condensate in the second split chamber flows unidirectionally into the first split chamber, and the condensate in the first split chamber is discharged from the first interface to the inlet and outlet water pipes.

[0029] The condensate control method of the present invention has the following advantages compared to the prior art: Using the above condensate control device, during the condensate control process, when the water level in the condensate pipe reaches a preset level, the control assembly is activated, driving the first sealing portion to reciprocate within the working chamber. Specifically, as the first sealing portion moves toward the first interface, the space within the second sub-chamber increases, creating a certain negative pressure. Because the second control valve allows condensate to flow unidirectionally from the second interface into the second sub-chamber, condensate in the second interface is unidirectionally drawn into the second sub-chamber under the action of the negative pressure. Simultaneously, the space within the first sub-chamber is compressed. Furthermore, because the first control valve provides unidirectional flow control, condensate in the first sub-chamber (i.e., condensate retained from the previous operation) is forced out of the first interface by the first sealing portion and the first control valve, and ultimately flows into the inlet and outlet pipes under the action of the control assembly. This effectively controls condensate recycling, eliminating the need to drain condensate or reserve a channel for condensate drainage, thereby improving the user experience of the product. When the first sealing portion moves away from the first interface, the space in the second sub-cavity is compressed. At this time, under the one-way control of the first control valve, the condensed water in the second sub-cavity is pressed into and stored in the first sub-cavity for subsequent discharge.

[0030] The principle and effect of the present invention are further explained below in conjunction with the above scheme:

[0031] In one embodiment, according to the moving direction of the first sealing part in the working chamber, the step of unidirectional control through the first control valve and the second control valve includes: when the first sealing part moves in the direction toward the first interface, the second control valve is opened to allow the condensed water in the second interface to flow into the second split cavity, wherein the second control valve is a switch valve with automatic opening and closing functions; when the first sealing part moves in the direction away from the first interface, the second control valve is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 This is a schematic structural diagram of a condensed water control device according to an embodiment of the present invention when located in a first position;

[0035] Figure 2 This is a schematic structural diagram of a condensed water control device according to an embodiment of the present invention when located in the second position;

[0036] Figure 3 This is a schematic structural diagram of a moving assembly within a housing according to an embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of the structure of the control component when located in the first position according to an embodiment of the present invention;

[0038] Figure 5 This is a schematic diagram of the structure of the control component when located in the second position according to an embodiment of the present invention;

[0039] Figure 6 This is a schematic diagram of the structure of the water inlet and outlet pipes according to one embodiment of the present invention;

[0040] Figure 7 This is a schematic diagram of the coordination structure of the condensate control device and the condensate pipe according to one embodiment of the present invention;

[0041] Figure 8 This is a structural diagram of a condensing gas water heater according to an embodiment of the present invention;

[0042] Figure 9 The process of the condensed water control method according to one embodiment of the present invention is as follows Figure 1 ;

[0043] Figure 10 The process of the condensed water control method according to one embodiment of the present invention is as follows Figure 2 ;

[0044] Figure 11 The process of the condensed water control method according to one embodiment of the present invention is as follows Figure 3 .

[0045] Description of reference numerals:

[0046] 100. Condensate control device; 110. Housing; 111. First interface; 112. Second interface; 113. Third interface; 114. Working chamber; 1141. First sub-chamber; 1142. Second sub-chamber; 115. Operating chamber; 1151. Third sub-chamber; 1152. Fourth sub-chamber; 116. Pressure-stabilizing port; 117. Partition; 1171. Third sealing ring; 1172. Guide hole; 120. Moving assembly; 121. First sealing portion; 1211. First sealing ring; 122. Sliding member; 1221. Mounting groove; 1222. Water inlet hole; 123. Second sealing portion; 1231. Second sealing ring; 124. First control valve; 1241. First one-way valve; 1242. First valve seat; 12421. First valve port; 12 43. First spring; 1244. First blocking member; 130. Second control valve; 131. Second one-way valve; 132. Second valve seat; 1321. Second valve port; 133. Second spring; 134. Second blocking member; 140. Control assembly; 141. Valve body; 1411. Slide; 1412. Fourth interface; 1413. Fifth interface; 1414. First opening; 1415. Second opening; 142. Water inlet; 143. Water outlet; 144. Valve core; 145. Partition; 1451. First channel; 1452. Second channel; 1453. Third channel; 150. Water inlet and outlet pipes; 151. Water inlet section; 152. Contraction section; 153. Throat section; 200. Condenser; 210. Condensate pipe; 220. Water level detector. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0048] In one embodiment, please refer to Figure 1 and Figure 2A condensate control device 100 includes: a shell 110, a moving component 120, a second control valve 130, a control component 140 and an inlet and outlet water pipe 150. A first interface 111 and a second interface 112 are provided on the shell 110 at intervals. The second interface 112 is used to communicate with the condensate pipe 210. A working chamber 114 is provided in the shell 110. The moving component 120 includes a first sealing portion 121 and a first control valve 124 provided on the first sealing portion 121. The first sealing portion 121 is sealed with the cavity wall of the working chamber 114 and divides the working chamber 114 into a first split cavity 1141 and a second split cavity 1142. The first interface 111 is connected to the first split cavity 1141. The first control valve 124 is used to control the condensate to flow from the second split cavity 1142 into the first split cavity 1141 in one direction. The second control valve 130 is located in the second port 112 and is used to control the unidirectional flow of condensed water from the second port 112 into the second sub-cavity 1142. The control assembly 140 is used to drive the first sealing portion 121 to reciprocate within the working chamber 114 and to control the flow of condensed water from the first port 111 to the inlet and outlet pipes 150.

[0049] In the condensed water control process, when the water level in the condensed water pipe 210 reaches a preset water level, the control assembly 140 is activated to drive the first sealing portion 121 to move back and forth in the working chamber 114. Figure 2 When the first sealing part 121 moves in the direction toward the first interface 111, the space in the second sub-cavity 1142 increases, forming a certain negative pressure. Since the second control valve 130 allows the condensed water to flow from the second interface 112 into the second sub-cavity 1142 in one direction, the condensed water in the second interface 112 will be sucked into the second sub-cavity 1142 in one direction under the action of negative pressure. At the same time, the space in the first sub-cavity 1141 is compressed. Since the first control valve 124 is a one-way flow control, the condensed water in the first sub-cavity 1141 (that is, the condensed water retained in the last operation) is pressed out from the first interface 111 under the action of the first sealing part 121 and the first control valve 124, and finally flows into the inlet and outlet water pipes 150 under the action of the control component 140. This effectively controls the recycling of condensed water, and there is no need to discharge the condensed water to the outside and reserve a channel for discharging the condensed water, which is beneficial to improving the user experience of the product. Please refer to Figure 1When the first sealing portion 121 moves away from the first interface 111, the space in the second sub-cavity 1142 is compressed. At this point, under the one-way control of the first control valve 124, the condensed water in the second sub-cavity 1142 is pressed into and retained in the first sub-cavity 1141, ready for subsequent drainage. Furthermore, the condensed water control device 100 eliminates the need for users to reserve a separate condensed water drainage channel, greatly facilitating the installation of the condensing gas water heater. This also helps maintain the aesthetically pleasing appearance of the entire product.

[0050] It should be noted that the first control valve 124 can be a first one-way valve 1241 or a switch valve with automatic opening and closing functions. When the first control valve 124 is a first one-way valve 1241, it can be of various types, such as spring-type, gravity-type, swing-type, plastic diaphragm-type, and other one-way valves. Specifically, when the first one-way valve 1241 is a spring-type one-way valve, the first one-way valve 1241 includes a first valve seat 1242, a first spring 1243, and a first blocking member 1244. The first valve seat 1242 is provided with a first valve port 12421, and the first blocking member 1244 elastically blocks the first valve port 12421 under the action of the first spring 1243. During the specific installation process, the first valve port 12421 is arranged to face the second sub-cavity 1142. When the first control valve 124 is a switch valve with automatic opening and closing functions, such as a solenoid valve or a stop valve, etc. At this time, the opening and closing of the first control valve 124 depends on the moving direction of the first sealing part 121 in the working chamber 114. For example, when it is sensed that the first sealing part 121 moves in a direction away from the first interface 111 (i.e., moves toward the second interface 112), the first control valve 124 is triggered to open, so that the condensed water in the second split chamber 1142 flows into the first split chamber 1141.

[0051] Similarly, the second control valve 130 can be a second one-way valve 131, or a switch valve with automatic opening and closing functions. When the second control valve 130 is a second one-way valve 131, its type can be various, such as spring-type, gravity-type, swing-type, plastic diaphragm-type and other one-way valves. Among them, when the second one-way valve 131 is a spring-type one-way valve, the second one-way valve 131 includes a second valve seat 132, a second spring 133 and a second blocking member 134. A second valve port 1321 is provided on the second valve seat 132, and the second blocking member 134 elastically blocks the second valve port 1321 under the action of the second spring 133. During the specific installation process, the second valve port 1321 is set back to the second split cavity 1142. When the second control valve 130 is a switch valve with automatic opening and closing functions, such as a solenoid valve, a stop valve, etc. At this time, the opening and closing of the second control valve 130 depends on the moving direction of the second sealing part 123 in the working chamber 114. For example, when it is sensed that the second sealing part 123 moves in the direction toward the first interface 111 (that is, moves away from the second interface 112), the second control valve 130 is triggered to open, so that the condensed water in the second interface 112 flows into the second split chamber 1142.

[0052] It should also be noted that the control component 140 can control the movement of the first sealing part 121 by screw drive control, for example: the first sealing part 121 has a screw structure, and the screw is driven to rotate by a motor or other equipment to make the first sealing part 121 move back and forth in the working chamber 114; it can also be an electromagnetic drive method, for example: the control component 140 is an electromagnetic device, and the first sealing part 121 has a magnetic conductive or permanent magnet structure, which drives the first sealing part 121 to move back and forth by changing the direction of the magnetic field. Of course, the control component 140 can also change the way the fluid enters the shell 110 from top to bottom to achieve a pressure difference between the upper and lower ends of the first sealing part 121, for example: the control component 140 is used to make the fluid alternately switch to flow into the first interface 111 and the third interface 113 (in this case, the shell 110 also has an operating chamber 115, and the surface also has a third interface 113).

[0053] For further information, please refer to Figure 1, an operating chamber 115 is also provided in the shell 110, which is spaced apart from the working chamber 114. The moving assembly 120 also includes a sliding member 122 connected to the first sealing portion 121. One end of the sliding member 122 is movable in the operating chamber 115. A third interface 113 connected to the operating chamber 115 is provided on the shell 110. The control assembly 140 is used to control the water flow in the inlet and outlet pipes 150 to selectively flow into the first interface 111 and the third interface 113. It can be seen that when the control assembly 140 drives the first sealing portion 121 to move, it adopts a method of changing the inflow of the fluid in the shell 110. When the control assembly 140 controls the water flow to flow into the first interface 111, there will be a certain pressure at the opposite ends of the moving assembly 120, pushing the first sealing portion 121 to move away from the first interface 111 (i.e., toward the second interface 112). At this time, the condensed water flows into the second split cavity 1142 and is retained in the first split cavity 1141. When the control component 140 controls the water flow to flow in from the third interface 113, the water flow pushes the sliding member 122, causing the first sealing portion 121 to move toward the first interface 111 (i.e., move away from the second interface 112). At this time, the condensed water in the second interface 112 is sucked into the second split cavity 1142. At the same time, the condensed water in the first split cavity 1141 is also discharged from the first interface 111 to the inlet and outlet pipes 150 under the action of the movement of the moving component 120. That is, at this stage, both the absorption of condensed water and the synchronous discharge of condensed water are achieved. In addition, the control component 140 uses the water flow in the inlet and outlet pipes 150 to realize the movement of the moving component 120. In this way, the condensed water control device 100 does not need to provide additional power, and realizes the effective and reasonable use of water power, further improving the energy efficiency of the entire product.

[0054] Specifically, taking methane, which produces the most condensed water, as an example, the thermal efficiency of completely condensing the water vapor produced by gas combustion is 10.9%. A typical condensing gas water heater can only cool 45% to 65% of the water vapor into condensed water, meaning the thermal efficiency of condensed water is 4.9% to 7.1%. For a 20kW condensing gas water heater using methane, according to the chemical reaction formula:

[0055] CH4+2O2=CO2+2H2O

[0056] A 20kW condensing gas water heater is about 2m 3 4m of methane produced 3The water vapor is condensed into water at 65%, and the mass of the condensed water is: (36 / 16)(2×0.7174)×65%≈2.1(kg / h), and the amount of condensed water per minute is 2.1 / 60=35(g / min); (the amount of condensed water per minute is only 54g / min when it is 100% condensed) and the drainage volume is extremely small. The moving component 120 does not need to move back and forth all the time, it only needs to work intermittently. Moreover, compared with the general flow rate of 8L / min of the water heater, it accounts for less than 1%; even if a 60kW condensing gas water heater is fully condensed, the mass of the condensed water is:

[0057] (36 / 16)(6×0.7174)×100%≈9.68(kg / h)≈161.3(g / min)=161.3(ml / min)

[0058] However, when the maximum load is reached, the water flow rate will not be only 8L / min. Based on the inlet water temperature of 5 degrees, the outlet water temperature of 65 degrees, the thermal efficiency of 108%, the hot water production rate is 36 (l / min) / temperature rise of 25 degrees, and the actual water output is 36×25 / (65-5)=15 (l / min), accounting for only 1.08%. Directly discharging it into the inlet and outlet pipes 150 has little impact.

[0059] For further information, please refer to Figure 1 , the moving component 120 also includes a second sealing portion 123 connected to the sliding member 122. The second sealing portion 123 is sealed with the cavity wall of the operating cavity 115, and divides the operating cavity 115 into a third sub-cavity 1151 and a fourth sub-cavity 1152 along the moving direction of the sliding member 122. The fourth sub-cavity 1152 is connected to the third interface 113, and a pressure-stabilizing port 116 connected to the third sub-cavity 1151 is provided on the shell 110. In this way, when the water flow in the inlet and outlet pipes 150 flows from the third interface 113 into the fourth sub-cavity 1152 under the action of the control component 140, it will push the second sealing portion 123 to move, compressing the space of the third sub-cavity 1151. Since a pressure stabilizing port 116 is provided on the shell 110 , when the third sub-cavity 1151 is compressed, the air in the third sub-cavity 1151 is discharged from the pressure stabilizing port 116 to ensure that the second sealing portion 123 moves stably in the operating cavity 115 , thereby driving the first sealing portion 121 to move stably in the working cavity 114 .

[0060] It should be noted that the sealing cooperation between the second sealing portion 123 and the wall of the operating chamber 115 should be understood as follows: the perimeter of the second sealing portion 123 is adapted to the dimensions of the wall of the operating chamber 115, ensuring a close fit between the two and preventing water leakage from between the second sealing portion 123 and the wall of the operating chamber 115. Similarly, the sealing cooperation between the first sealing portion 121 and the wall of the working chamber 114 should be understood as follows: the perimeter of the first sealing portion 121 is adapted to the dimensions of the wall of the working chamber 114, ensuring a close fit between the two and preventing condensed water leakage from between the first sealing portion 121 and the wall of the working chamber 114.

[0061] Specifically, please refer to Figure 1 The first sealing portion 121 is sleeved with a first sealing ring 1211, which seals against the wall of the working chamber 114. Of course, during actual installation, the wall of the working chamber 114 can be designed as a smooth surface to improve the sliding properties between the first sealing ring 1211 and the wall of the working chamber 114. Similarly, the second sealing portion 123 is sleeved with a second sealing ring 1231, which seals against the wall of the operating chamber 115. Of course, during actual installation, the wall of the operating chamber 115 can be designed as a smooth surface to improve the sliding properties between the second sealing ring 1231 and the wall of the operating chamber 115.

[0062] In one embodiment, please refer to Figure 4 and Figure 5 The control assembly 140 includes a driving member (not shown), a valve core 144 and a valve body 141. The valve body 141 is provided with a water inlet end 142, a water outlet end 143, a fourth interface 1412 and a fifth interface 1413. The fourth interface 1412 and the fifth interface 1413 are connected to the first interface 111 and the third interface 113 respectively. The valve core 144 is located in the valve body 141. The driving member is used to drive the valve core 144 to move so that the water inlet end 142 and the water outlet end 143 are switched and connected between the fourth interface 1412 and the fifth interface 1413 respectively, that is, there are two connection states in the valve body 141: one, please refer to Figure 4 , the water inlet 142 is connected to the fourth interface 1412, and the water outlet 143 is connected to the fifth interface 1413; 2. Please refer to Figure 5 The water inlet 142 is connected to the fifth interface 1413, and the water outlet 143 is connected to the fourth interface 1412. The water inlet 142 and the water outlet 143 are both connected to the water inlet and outlet pipes 150, so that the control component 140 can use the water flow in the water inlet and outlet pipes 150 to drive the moving component 120, and can also discharge the discharged condensed water into the water inlet and outlet pipes 150 through the water outlet 143. Please refer to Figure 1When the water level in the condensate pipe 210 reaches a preset water level, the driving member drives the valve core 144 to move, so that the water inlet end 142 is connected to the fifth interface 1413, and the water outlet end 143 is connected to the fourth interface 1412. At this time, the water flows through the water inlet end 142, the fifth interface 1413 and the third interface 113 in sequence, and finally flows into the operating chamber 115 (that is, the fourth sub-cavity 1152 in the operating chamber 115); then, the water flows through the sliding part 122 to push the first sealing part 121 to move in the working chamber 114, thereby increasing the space of the second sub-cavity 1142 and compressing the space of the first sub-cavity 1141; then, through the one-way control of the first control valve 124 and the second control valve 130, the condensed water in the second interface 112 is sucked into the second sub-cavity 1142, and the condensed water in the first sub-cavity 1141 is pressed into the first interface 111; the condensed water pressed into the first interface 111 finally flows through the fourth interface 1412, the water outlet end 143 and the inlet and outlet pipes 150 in sequence.

[0063] Also, please refer to Figure 2 , the driving member drives the valve core 144 to move again, so that the water inlet end 142 is connected to the fourth interface 1412, and the water outlet end 143 is connected to the fifth interface 1413. At this time, part of the water flow in the inlet and outlet pipes 150 flows through the water inlet end 142, the fourth interface 1412 and the first interface 111 in sequence, and finally flows into the first sub-cavity 1141; at the same time, the water flow in the operating chamber 115 also flows through the third interface 113, the fifth interface 1413 and the inlet and outlet pipes 150 in sequence, so that there is a pressure difference at both ends of the movable component 120. Since the first control valve 124 is a one-way flow control, at this time the first control valve 124 is in an open state relative to the condensed water in the second sub-cavity 1142. Therefore, the first sealing part 121 can easily move toward the second interface 112 in the working chamber 114, so that the condensed water in the second sub-cavity 1142 is transferred to the first sub-cavity 1141 for the next discharge operation.

[0064] It should be noted that the valve core 144 can move linearly or rotate under the drive of the driving member. At the same time, the water inlet end 142 and the water outlet end 143 can be switched and connected between the fourth interface 1412 and the fifth interface 1413 respectively by setting two different connection modes on the valve core 144, such as two parallel channels and two mutually intersecting but different channels. When switching, the valve core 144 is operated linearly or rotated, and the two parallel channels are placed in the working position, so that the water inlet end 142 and the water outlet end 143 are connected to the fourth interface 1412 and the fifth interface 1413 respectively in a one-to-one correspondence; when switching again, the valve core 144 is operated linearly or rotated, and the two mutually intersecting but non-connected channels are placed in the working position, so that the water inlet end 142 and the water outlet end 143 are connected to the fifth interface 1413 and the fourth interface 1412 respectively in a one-to-one correspondence. Alternatively, the channel on the valve core 144 can be used to connect the water inlet 142 and the water outlet 143 to the fourth interface 1412 and the fifth interface 1413 in a positive or offset manner. The driving member can be a motor, a cylinder, a hydraulic cylinder, an electric cylinder, etc.

[0065] For further information, please refer to Figure 4 A chute 1411 is provided in the valve body 141. The valve core 144 is provided with at least three partitions 145, which form a first channel 1451 and a second channel 1452 in sequence with the walls of the chute 1411. The valve body 141 is provided with a first opening 1414 and a second opening 1415, respectively located on either side of the water inlet end 142. Both the first opening 1414 and the second opening 1415 are connected to the water outlet end 143. When the driving member drives the valve core 144 to the first position, the first opening 1414, the first channel 1451, and the fifth port 1413 are connected in sequence, and the water inlet end 142, the second channel 1452, and the fourth port 1412 are connected in sequence. When the driving member drives the valve core 144 to the second position, the water inlet end 142, the first channel 1451, and the fifth port 1413 are connected in sequence, and the second opening 1415, the second channel 1452, and the fourth port 1412 are connected in sequence. It can be seen from this that this embodiment uses channels to enable the water inlet end 142 and the water outlet end 143 to be alternately switched and connected with the fourth interface 1412 and the fifth interface 1413 respectively, so as to realize the flow direction of water in the inlet and outlet pipes 150 in the shell 110.

[0066] Specifically, please refer to Figure 4, the fourth interface 1412 is located between the second opening 1415 and the water inlet end 142, and the fifth interface 1413 is located between the water inlet end 142 and the first opening 1414. Furthermore, the valve core 144 is provided with four partitions 145, which, together with the walls of the chute 1411, form a first channel 1451, a second channel 1452, and a third channel 1453, respectively. At this time, when the driving member drives the valve core 144 to the first position, the first opening 1414, the first channel 1451, and the fifth interface 1413 are sequentially connected, and the water inlet end 142, the second channel 1452, and the fourth interface 1412 are sequentially connected, while the second opening 1415 is connected to the third channel 1453, maintaining a disconnected state and preventing water from flowing back from the second opening 1415 into the chute 1411 and causing water leakage. When the driving member drives the valve core 144 to move to the second position, the water inlet end 142, the first channel 1451 and the fifth interface 1413 are connected in sequence, and the second opening 1415, the second channel 1452 and the fourth interface 1412 are connected in sequence. At this time, the first opening 1414 is closed by the front end of the valve core 144 and the inner wall of the slide groove 1411.

[0067] Of course, in other embodiments, the first opening 1414 and the second opening 1415 may both be connected to the water inlet 142 . In this case, the first opening 1414 and the second opening 1415 should be located on opposite sides of the water outlet 143 .

[0068] In one embodiment, please refer to Figure 1 and Figure 6 The inlet and outlet water pipes 150 are provided with an inlet section 151, a contraction section 152 and a throat section 153 which are connected in sequence. The cross-sectional area S1 of the inlet section 151 is larger than the cross-sectional area S2 of the throat section 153. The cross-sectional area S3 of the contraction section 152 decreases from the end of the contraction section 152 close to the inlet section 151 to the end of the contraction section 152 close to the throat section 153. The decreasing trend should include first decreasing, then remaining unchanged, then decreasing, or gradually decreasing. The inlet end 142 is connected to the inlet section 151, and the outlet end 143 is connected to the throat section 153. It can be seen that the inlet and outlet water pipes 150 of this embodiment are of a Venturi tube structure. When water flows through the inlet and outlet water pipes 150, there is always a certain water pressure difference between the inlet end 142 and the outlet end 143. This is conducive to ensuring that a certain pressure is maintained on the opposite sides of the moving component 120, thereby making it easier for the moving component 120 to move in the shell 110.

[0069] Of course, in other embodiments, the water inlet and outlet pipes 150 may also be ordinary straight pipe structures. In this case, a one-way valve or an on-off valve with an automatic opening and closing function needs to be installed on the water outlet end 143 to ensure that the water in the water inlet and outlet pipes 150 enters from the water inlet end 142 and flows out from the water outlet end 143.

[0070] It should be noted that the water inlet and outlet pipes 150 come from any point in the tap water passage of the condensing gas water heater.

[0071] In one embodiment, a mounting groove 1221 is provided on a side surface of the sliding member 122 facing the first sub-cavity 1141. A water inlet hole 1222 is provided on the portion of the sliding member 122 located in the second sub-cavity 1142. The first control valve 124 is installed in the mounting groove 1221 and is used to control the unidirectional flow of condensed water from the water inlet hole 1222 into the mounting groove 1221. In this way, when the first sealing portion 121 moves toward the second interface 112, the condensed water in the second sub-cavity 1142 enters the mounting groove 1221 through the water inlet hole 1222 and flows into the first sub-cavity 1141.

[0072] In one embodiment, please refer to Figure 3 A partition 117 is formed between the working chamber 114 and the operating chamber 115. The partition 117 is provided with a guide hole 1172 for the sliding member 122 to pass through. The sliding member 122 is sealed with the hole wall of the guide hole 1172. In this way, the sliding member 122 can move stably on the partition 117.

[0073] For further information, please refer to Figure 3 A third sealing ring 1171 is sleeved in the guide hole 1172 , and the sliding member 122 passes through the third sealing ring 1171 and is sealed with the third sealing ring 1171 .

[0074] In one embodiment, please refer to Figure 1 and Figure 8 A condensing gas water heater includes a condenser 200 and the condensed water control device 100 in any one of the above embodiments. The condensed water pipe 210 of the condenser 200 is connected to the second interface 112.

[0075] The above-mentioned condensing gas water heater adopts the above-mentioned condensed water control device 100. During the condensed water control process, when the water level in the condensed water pipe 210 reaches the preset water level, the control component 140 is started to drive the first sealing part 121 to move back and forth in the working chamber 114. Specifically, when the first sealing part 121 moves in the direction toward the first interface 111, the space in the second sub-cavity 1142 increases, forming a certain negative pressure. Because the second control valve 130 allows condensed water to flow unidirectionally from the second interface 112 into the second sub-cavity 1142, the condensed water in the second interface 112 will be unidirectionally sucked into the second sub-cavity 1142 under the action of negative pressure. At the same time, the space in the first sub-cavity 1141 is compressed. Since the first control valve 124 is a one-way flow control, the condensed water in the first sub-cavity 1141 (i.e., the condensed water retained in the last operation) is pressed out from the first interface 111 under the action of the first sealing portion 121 and the first control valve 124, and finally flows into the inlet and outlet water pipes 150 under the action of the control component 140. This effectively controls the recycling of the condensed water, and there is no need to discharge the condensed water outward or reserve a channel for discharging the condensed water, which is conducive to improving the user experience of the product. When the first sealing portion 121 moves in a direction away from the first interface 111, the space of the second sub-cavity 1142 is compressed. At this time, under the one-way control of the first control valve 124, the condensed water in the second sub-cavity 1142 is pressed into and retained in the first sub-cavity 1141 for use in the next discharge.

[0076] In one embodiment, the condensing gas water heater also includes a filter. This replaceable filter is positioned between the condenser 200 and the condensate control device 100 and is used to filter the condensate, ensuring that the recovered condensate remains relatively pure and improves water quality. This also prevents excessive impurities in the condensate from clogging the condensate control device 100, ensuring stable operation of the entire system. Furthermore, the filter can be quickly replaced, enhancing long-term user experience.

[0077] It should be noted that there are various options for the filter device, such as filters made of a single material such as PP cotton, activated carbon, or compressed carbon, or filters made of a combination of materials such as granular carbon, compressed carbon, RO reverse osmosis membrane, and post-activated carbon. This embodiment does not impose any specific limitations on this, as long as it can filter condensed water.

[0078] In one embodiment, the condensing gas water heater further includes a neutralization device. The neutralization device is used to neutralize the acidity of the condensed water. During operation, acidic gases such as sulfur dioxide and nitrogen dioxide dissolve in the condensed water, resulting in a weak acidity in the condensed water. This poses a risk to the water heater itself and the environment. Therefore, the neutralization device neutralizes the acidity of the condensed water, improving the water quality to meet environmental standards or recyclable standards.

[0079] It should be noted that the neutralization device may contain materials capable of neutralizing acidic substances, such as carbonate ion-containing ores. Since the specific structure of the neutralization device is not the subject of improvement in this embodiment, the specific structure of the neutralization device can be directly referenced in existing literature and will not be described in detail here.

[0080] In one embodiment, the condensing gas water heater further includes a water level detector 220. The water level detector 220 is used to detect the water level in the condensing water pipe 210. Thus, the water level in the condensing water pipe 210 is detected in real time by the water level detector 220, so that the condensing water control device 100 can be activated in a timely manner.

[0081] Optionally, the water level detector 220 may be, but is not limited to, a water level sensor or a float switch.

[0082] In one embodiment, please refer to Figure 1 and Figure 9 A condensed water control method, using any one of the above condensed water control devices 100, comprises the following steps:

[0083] S100, obtaining the real-time water level of the condensed water in the condensed water pipe 210;

[0084] S200: If the real-time water level reaches the preset water level, the control assembly 140 controls the first sealing portion 121 to move back and forth in the working chamber 114;

[0085] S300. According to the moving direction of the first sealing part 121 in the working chamber 114, through the unidirectional control of the first control valve 124 and the second control valve 130, the condensed water in the second interface 112 flows unidirectionally into the second split chamber 1142, the condensed water in the second split chamber 1142 flows unidirectionally into the first split chamber 1141, and the condensed water in the first split chamber 1141 is discharged from the first interface 111 to the inlet and outlet water pipes 150.

[0086] The above-mentioned condensed water control method adopts the above-mentioned condensed water control device 100. During the condensed water control process, when the water level in the condensed water pipe 210 reaches the preset water level, the control component 140 is activated to drive the first sealing portion 121 to move back and forth in the working chamber 114. Specifically, when the first sealing portion 121 moves in the direction toward the first interface 111, the space in the second sub-cavity 1142 increases, forming a certain negative pressure. Because the second control valve 130 allows condensed water to flow unidirectionally from the second interface 112 into the second sub-cavity 1142, the condensed water in the second interface 112 will be unidirectionally sucked into the second sub-cavity 1142 under the action of negative pressure. At the same time, the space in the first sub-cavity 1141 is compressed. Since the first control valve 124 is a one-way flow control, the condensed water in the first sub-cavity 1141 (i.e., the condensed water retained in the last operation) is pressed out from the first interface 111 under the action of the first sealing portion 121 and the first control valve 124, and finally flows into the inlet and outlet water pipes 150 under the action of the control component 140. This effectively controls the recycling of the condensed water, and there is no need to discharge the condensed water outward or reserve a channel for discharging the condensed water, which is conducive to improving the user experience of the product. When the first sealing portion 121 moves in a direction away from the first interface 111, the space of the second sub-cavity 1142 is compressed. At this time, under the one-way control of the first control valve 124, the condensed water in the second sub-cavity 1142 is pressed into and retained in the first sub-cavity 1141 for use in the next discharge.

[0087] Specifically, please refer to Figure 1 and Figure 7 A water level detector 220 is provided on the condensate pipe 210 to detect the water level in the condensate pipe 210 in real time. Furthermore, to determine the movement direction of the first sealing portion 121, a displacement sensor may be provided on the moving assembly 120 or within the housing 110 to detect the change in the distance between the first sealing portion 121 and the first interface 111 or the second interface 112, thereby determining the movement direction of the first sealing portion 121.

[0088] It should be noted that if the real-time water level does not reach the preset water level, the real-time water level in the condensate pipe 210 may continue to be monitored.

[0089] For further information, please refer to Figure 1 and Figure 10 S300: According to the moving direction of the first sealing portion 121 in the working chamber 114, the steps of unidirectionally controlling the first control valve 124 and the second control valve 130 include:

[0090] S310: When the first sealing portion 121 moves toward the first port 111, the second control valve 130 is opened, so that the condensed water in the second port 112 flows into the second split cavity 1142. The second control valve 130 is an on-off valve with an automatic opening and closing function.

[0091] S320 , when the first sealing portion 121 moves in a direction away from the first interface 111 , the second control valve 130 is closed.

[0092] Of course, in other embodiments, the second control valve 130 is directly the second one-way valve 131 to automatically achieve one-way control.

[0093] In one embodiment, please refer to Figure 1 and Figure 11 S200: The step of controlling the first sealing portion 121 to reciprocate in the working chamber 114 through the control assembly 140 includes:

[0094] S210, start the driving member to drive the valve core 144 to move to the first position, so that the first opening 1414, the first channel 1451 and the fifth interface 1413 are connected in sequence, and the water inlet end 142, the second channel 1452 and the fourth interface 1412 are connected in sequence;

[0095] S220: When the movable assembly 120 moves to the preset position, the valve core 144 is driven to move to the second position, so that the water inlet end 142, the first channel 1451, and the fifth port 1413 are connected in sequence, and the second opening 1415, the second channel 1452, and the fourth port 1412 are connected in sequence. In this way, the water flow in the water inlet and outlet pipes 150 drives the first sealing portion 121 to move back and forth in the working chamber 114.

[0096] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0097] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0098] The "first" and "second" in the present invention do not represent specific quantities and orders, but are only used to distinguish names.

[0099] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A condensed water control device, characterized in that: The condensed water control device (100) comprises: A shell (110), wherein a first interface (111) and a second interface (112) are provided on the shell (110) at intervals, the second interface (112) is used to communicate with a condensed water pipe (210), and a working chamber (114) is provided in the shell (110); A moving assembly (120), the moving assembly (120) comprising a first sealing portion (121) and a first control valve (124) arranged on the first sealing portion (121), the first sealing portion (121) being in sealing cooperation with a cavity wall of the working cavity (114) and dividing the working cavity (114) into a first split cavity (1141) and a second split cavity (1142), the first interface (111) being in communication with the first split cavity (1141), and the first control valve (124) being used to control condensed water to flow unidirectionally from the second split cavity (1142) into the first split cavity (1141); a second control valve (130), the second control valve (130) being located in the second interface (112) and being used to control the condensed water to flow from the second interface (112) into the second split cavity (1142) in a one-way manner; A control component (140) and an inlet and outlet water pipe (150), wherein the control component (140) is used to drive the first sealing portion (121) to move back and forth in the working chamber (114), and to control the condensed water flowing out of the first interface (111) to flow into the inlet and outlet water pipe (150).

2. The condensed water control device according to claim 1, characterized in that: An operating chamber (115) spaced apart from the working chamber (114) is further provided in the housing (110). The moving assembly (120) further includes a sliding member (122) connected to the first sealing portion (121). One end of the sliding member (122) is movable and positioned in the operating chamber (115). A third interface (113) communicating with the operating chamber (115) is provided on the housing (110). The control assembly (140) is used to control the water flow in the water inlet and outlet pipes (150) to selectively flow into the first interface (111) and the third interface (113).

3. The condensed water control device according to claim 2, characterized in that: The moving assembly (120) further includes a second sealing portion (123) connected to the sliding member (122), wherein the second sealing portion (123) is sealed with the cavity wall of the operating cavity (115) and separates the operating cavity (115) into a third split cavity (1151) and a fourth split cavity (1152) along the moving direction of the sliding member (122), wherein the fourth split cavity (1152) is connected to the third interface (113), and a pressure stabilizing port (116) connected to the third split cavity (1151) is provided on the housing (110).

4. The condensed water control device according to claim 2, characterized in that: The control assembly (140) comprises a driving member, a valve core (144) and a valve body (141); the valve body (141) is provided with a water inlet end (142), a water outlet end (143), a fourth interface (1412) and a fifth interface (1413); the fourth interface (1412) and the fifth interface (1413) are respectively connected to the first interface (111) and the third interface (113); the valve core (144) is located in the valve body (141); the driving member is used to drive the valve core (144) to move so that the water inlet end (142) and the water outlet end (143) are respectively switched and connected between the fourth interface (1412) and the fifth interface (1413); the water inlet end (142) and the water outlet end (143) are both connected to the water inlet and outlet pipes (150).

5. The condensed water control device according to claim 4, characterized in that: A chute (1411) is provided in the valve body (141), and at least three partitions (145) are provided on the valve core (144), and a first channel (1451) and a second channel (1452) are sequentially formed between the valve core and the groove wall of the chute (1411). The valve body (141) is provided with a first opening (1414) and a second opening (1415) respectively located on both sides of the water inlet end (142), and the first opening (1414) and the second opening (1415) are both communicated with the water outlet end (143); When the driving member drives the valve core (144) to move to the first position, the first opening (1414), the first channel (1451) and the fifth interface (1413) are connected in sequence, and the water inlet end (142), the second channel (1452) and the fourth interface (1412) are connected in sequence; When the driving member drives the valve core (144) to move to the second position, the water inlet end (142), the first channel (1451) and the fifth interface (1413) are connected in sequence, and the second opening (1415), the second channel (1452) and the fourth interface (1412) are connected in sequence.

6. The condensed water control device according to claim 4, characterized in that: The water inlet and outlet pipe (150) is provided with a water inlet section (151), a contraction section (152) and a throat section (153) which are connected in sequence. The cross-sectional area S1 of the water inlet section (151) is greater than the cross-sectional area S2 of the throat section (153). The cross-sectional area S3 of the contraction section (152) decreases from the end of the contraction section (152) close to the water inlet section (151) to the end of the contraction section (152) close to the throat section (153). The water inlet end (142) is connected to the water inlet section (151), and the water outlet end (143) is connected to the throat section (153).

7. The condensed water control device according to claim 2, characterized in that: A mounting groove (1221) is provided on one side surface of the sliding member (122) facing the first split cavity (1141), and a water inlet hole (1222) is provided on the portion of the sliding member (122) located in the second split cavity (1142). The first control valve (124) is installed in the mounting groove (1221) and is used to control condensed water to flow from the water inlet hole (1222) into the mounting groove (1221) in one direction.

8. The condensed water control device according to claim 2, characterized in that: A partition (117) is formed between the working chamber (114) and the operating chamber (115), and a guide hole (1172) for the sliding member (122) to pass through is provided on the partition (117), and the sliding member (122) is sealed with the hole wall of the guide hole (1172).

9. The condensed water control device according to any one of claims 1 to 8, characterized in that: The first control valve (124) is a first one-way valve (1241) or a switch valve with automatic opening and closing functions; and / or, The second control valve (130) is a second one-way valve (131) or a switch valve with an automatic opening and closing function.

10. A condensing gas water heater, characterized in that: The condensing gas water heater comprises a condenser (200) and a condensed water control device (100) according to any one of claims 1 to 9, and the condensed water pipe (210) of the condenser (200) is connected to the second interface (112).

11. The condensing gas water heater according to claim 10, characterized in that: The condensing gas water heater further comprises a filter device, which is replaceably arranged between the condenser (200) and the condensed water control device (100) and is used to filter the condensed water; and / or, The condensing gas water heater further comprises a neutralizing device, wherein the neutralizing device is used to neutralize the acidity of the condensed water; and / or, The condensing gas water heater further comprises a water level detector (220), and the water level detector (220) is used to detect the water level in the condensing water pipe (210).

12. A condensed water control method, characterized in that: The condensed water control device (100) according to any one of claims 1 to 9 comprises the following steps: Obtaining the real-time water level of condensed water in the condensed water pipe (210); If the real-time water level reaches a preset water level, the first sealing portion (121) is controlled to move back and forth in the working chamber (114) through the control component (140); According to the moving direction of the first sealing portion (121) in the working chamber (114), the condensed water in the second interface (112) flows unidirectionally into the second split chamber (1142), the condensed water in the second split chamber (1142) flows unidirectionally into the first split chamber (1141), and the condensed water in the first split chamber (1141) is discharged from the first interface (111) to the inlet and outlet water pipes (150) through the unidirectional control of the first control valve (124) and the second control valve (130).

13. The condensed water control method according to claim 12, characterized in that: According to the moving direction of the first sealing portion (121) in the working chamber (114), the steps of one-way control by the first control valve (124) and the second control valve (130) include: When the first sealing portion (121) moves in a direction toward the first interface (111), the second control valve (130) is opened, so that condensed water in the second interface (112) flows into the second split cavity (1142), wherein the second control valve (130) is an on-off valve with an automatic opening and closing function; When the first sealing portion (121) moves in a direction away from the first interface (111), the second control valve (130) is closed.

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