Condensing gas water heater and its water seal device

Abstract

The present invention discloses a condensing gas water heater and a water seal device thereof. Among them, the water seal device of the condensing gas water heater includes a water storage member and a plugging member. The water storage member has a water inlet, a drain outlet and an operation port. The water inlet and the operation port are respectively located at both ends of the water storage member, and the drain outlet is located on the side wall of the water storage member; the plugging member includes a plug head structure and a plug rod structure arranged on the plug head structure. The plugging member is detachably installed on the operation port through the plug head structure, and the plug head structure plugs the operation port. The plug rod structure is located inside the water storage member, and one end of the plug rod structure far away from the plug head structure is located between the water inlet and the operation port. The above water seal device has the effect of facilitating the removal of ice cubes.

Description

Technical Field

[0001] The present invention relates to the technical field of gas water heaters, and particularly to a condensing gas water heater and a water seal device thereof. Background Art

[0002] The condensing gas water heater utilizes the latent heat of flue gas through a condensing heat exchange device to improve the thermal efficiency. However, a large amount of condensed water is generated during the operation of the condensing gas water heater. To drain the condensed water and prevent smoke leakage, a water seal device is usually provided on the drainage path of the condensed water.

[0003] In the related art, the water seal device is a hollow structure with one end open and the other end closed. The open end of the water seal device is the water inlet, and a drainage port is provided on the side wall of the water seal device. The drain pipe of the condensing heat exchange device extends into the water seal device through the water inlet, and the condensed water outlet of the drain pipe is located below the drainage port. There is a gap between the outer wall of the drain pipe and the inner wall of the water seal device to form a water flow channel. When the condensed water submerges the condensed water outlet of the drain pipe, the condensed water can effectively seal the flue gas to prevent smoke leakage. Moreover, as the condensed water gradually increases, the condensed water can be discharged from the drainage port through the water flow channel. The above water seal device can effectively prevent smoke leakage. However, when the weather is cold, the condensed water in the water seal device and the drain pipe is likely to freeze. Before using again, the ice needs to be taken out. But the existing water seal device is not convenient for taking out the ice. Summary of the Invention

[0004] The main object of the present invention is to provide a water seal device for a condensing gas water heater, aiming to facilitate the removal of ice formed in the water seal device.

[0005] To achieve the above object, a water seal device for a condensing gas water heater proposed by the present invention includes:

[0006] A water storage member having a water inlet, a drainage port, and an operation port. The water inlet and the operation port are respectively located at two ends of the water storage member, and the drainage port is located on the side wall of the water storage member; and

[0007] A plugging member including a plug head structure and a plug rod structure provided on the plug head structure. The plugging member is detachably installed on the operation port through the plug head structure, and the plug head structure plugs the operation port. The plug rod structure is located inside the water storage member, and one end of the plug rod structure away from the plug head structure is located between the water inlet and the operation port.

[0008] In one embodiment, the plug head structure includes a sealing portion and a sealing ring. The sealing ring is sleeved on the sealing portion, and the outer side and the inner side of the sealing ring respectively abut against the inner wall of the operation port and the sealing portion;

[0009] Alternatively, the plug structure includes a sealing portion, and the sealing portion is press-fitted into the operation port.

[0010] In one embodiment, the plugging member further includes a fixing structure;

[0011] The plug structure further includes a fixing portion, the fixing portion is connected to the sealing portion, and the sealing portion is closer to the water inlet than the fixing portion. The outer side of the fixing portion is spaced from the inner wall of the operation port, and the fixing structure is detachably connected to the outer water storage portion and the fixing portion respectively.

[0012] In one embodiment, the plug structure further includes an operating portion, the operating portion is located outside the outer water storage portion, and is connected to a side of the fixing portion away from the sealing portion.

[0013] In one embodiment, the sealing portion, the fixing portion and the operating portion are integrally formed; and / or

[0014] The edge of the operating portion is provided with a lug facing the water inlet, and the water storage member is provided with an avoidance groove corresponding to the lug, and the lug is received in the avoidance groove.

[0015] In one embodiment, one end of the plug structure close to the water inlet is recessed to form a groove, and the plug rod structure is arranged on the bottom of the groove.

[0016] In one embodiment, the bottom of the groove is an arc surface protruding towards the water inlet. The side wall of the groove includes a first side wall, a second side wall and a step surface. The first side wall is closer to the water inlet than the second side wall, and the first side wall is located on the outer periphery of the second side wall. The step surface connects the first side wall and the second side wall.

[0017] In one embodiment, the plug rod structure includes a rod body and rod bones. The rod body is arranged on the plug structure, and one end of the rod body away from the plug structure is located between the operation port and the water inlet. The rod bones are arranged on the rod body. There are multiple rod bones, and the multiple rod bones are divided into several rod bone groups, and the several rod bone groups are arranged at intervals along the extending direction of the rod body.

[0018] In one embodiment, one end of the rod body away from the groove is adjacent to the drain port; and / or

[0019] Each rod bone group includes several rod bones, and the several rod bones in the rod bone group are arranged at intervals and surround the rod body for one week; and / or

[0020] The rod bone is arranged at an angle with the rod body, and one end of the rod bone away from the rod body faces the end where the operation port is located; and / or

[0021] In the extending direction of the rod bone away from the rod body, the outer diameter of the rod bone gradually decreases; and / or

[0022] The rod bone is arc-shaped, and the rod bone bulges outward on the side where the water inlet is located.

[0023] In one embodiment, the water seal device further includes a drainage member. One end of the drainage member is communicated with the drainage port, and the end of the drainage member away from the drainage port has a water outlet.

[0024] In one embodiment, the water seal device further includes a first liquid level sensor. The first liquid level sensor is arranged on the drainage member and is located between the water outlet and the drainage port, and is used to obtain a first liquid level signal of the drainage member at the position where the first liquid level sensor is located. The first liquid level sensor is used to be electrically connected to the controller of the condensing gas water heater, and the controller can control the condensing gas water heater to shut down according to the first liquid level signal.

[0025] In one embodiment, the water seal device further includes a first liquid level sensor and a second liquid level sensor. Both the first liquid level sensor and the second liquid level sensor are arranged on the drainage member and are located between the water outlet and the drainage port. The first liquid level sensor is used to obtain a first liquid level signal of the drainage member at the position where the first liquid level sensor is located, and the second liquid level sensor is used to obtain a second liquid level signal of the drainage member at the position where the second liquid level sensor is located. The first liquid level sensor and the second liquid level sensor are respectively used to be electrically connected to the controller of the condensing gas water heater, and the controller can control the condensing gas water heater to shut down according to the first liquid level signal and the second liquid level signal.

[0026] In one embodiment, the first liquid level sensor and the second liquid level sensor are located at the same height position of the drainage member, and the first liquid level sensor and the second liquid level sensor are arranged around the drainage member along the circumferential direction of the drainage member;

[0027] Or, the first liquid level sensor and the second liquid level sensor are arranged at intervals in the extending direction of the drainage member, and the first liquid level sensor is closer to the water outlet than the second liquid level sensor.

[0028] In one embodiment, the water seal device further includes a connecting member, and the connecting member communicates the drainage port with the end of the drainage member away from the water outlet.

[0029] In one embodiment, the water seal device further includes a protective member. The connecting member is a hollow structure with openings at both ends. One end of the connecting member communicates with the drain outlet. The side wall of the connecting member is connected to one end of the drain member away from the water outlet. The protective member is detachably installed at one end of the connecting member away from the drain outlet and seals the end of the connecting member away from the drain outlet.

[0030] In one embodiment, the extending direction of the drain member is the same as that of the water storage member, and the water outlet and the operation port are located at the same end; and / or

[0031] The extending direction of the connecting member is perpendicular to the extending direction of the water storage member; and / or

[0032] The water storage member, the drain member and the connecting member are integrally formed.

[0033] In one embodiment, in the direction from the water inlet to the operation port, the inner diameter of the water storage member gradually increases.

[0034] In one embodiment, the water storage member includes an outer water storage portion and an inner water storage portion. One end of the inner water storage portion is located inside the outer water storage portion, and the other end is located outside the outer water storage portion. A water flow channel is formed between the outer wall of the inner water storage portion and the inner wall of the outer water storage portion;

[0035] The water inlet is provided at one end of the inner water storage portion located outside the outer water storage portion. The operation port is provided at one end of the outer water storage portion away from the water inlet. The drain outlet is provided on the side wall of the outer water storage portion;

[0036] One end of the inner water storage portion located inside the outer water storage portion is closer to the operation port than to the drain outlet. The inner water storage portion is movably sleeved on the plug rod structure.

[0037] In one embodiment, in the direction from the water inlet to the operation port, the inner diameter of the outer water storage portion gradually increases; and / or

[0038] In the direction from the water inlet to the operation port, the outer diameter of the inner water storage portion gradually decreases.

[0039] The present invention also provides a condensing gas water heater, including:

[0040] A condensing heat exchange device, the condensing heat exchange device includes a drain pipe, and the drain pipe has a condensing water outlet; and

[0041] The water seal device of the above-mentioned condensing gas water heater;

[0042] Wherein, the water storage member is sleeved on the drain pipe through the water inlet, and one end of the water storage member having the water inlet is hermetically connected to the condensation heat exchange device. A water flow channel is formed between the outer wall of the drain pipe and the inner wall of the water storage member. The drain pipe is movably sleeved on the plug rod structure through the condensation water outlet, and the condensation water outlet of the drain pipe is closer to the operation port than the drain port.

[0043] The present invention also provides a condensing gas water heater, comprising:

[0044] A condensation heat exchange device having a condensation water outlet; and

[0045] The water seal device of the above-mentioned condensing gas water heater, wherein the water inlet is communicated with the condensation water outlet.

[0046] The present invention also provides a control method for a condensing gas water heater, comprising the following steps:

[0047] The above-mentioned condensing gas water heater, and the water seal device comprises a drainage member;

[0048] Obtaining a liquid level signal at a first position of the drainage member, the first position being located between the water outlet and the drain port; and

[0049] If there is a liquid level signal at the first position, the condensing gas water heater is turned off.

[0050] The present invention also provides a control method for a condensing gas water heater, comprising the following steps:

[0051] The above-mentioned condensing gas water heater, and the water seal device comprises a drainage member;

[0052] Obtaining liquid level signals at a first position and a second position of the drainage member, both the first position and the second position being located between the water outlet and the drain port; and

[0053] If there are liquid level signals at both the first position and the second position, the condensing gas water heater is turned off.

[0054] In the above water seal device, after the condensed water in the water storage member of the water seal device freezes to form ice cubes, before using the condensing gas water heater again, the plug structure can be detached from the water storage member. When the plug structure is detached, the plug structure and the plug rod structure can take out the ice cubes in the water storage member, achieving the purpose of taking out the ice cubes. That is, the above water seal device also has the effect of facilitating the removal of ice cubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0056] Figure 1 Schematic cross-sectional structure diagram of a condensing gas water heater according to an embodiment of the present invention;

[0057] Figure 2 Schematic partial structure diagram of a condensing gas water heater according to an embodiment of the present invention;

[0058] Figure 3 For Figure 1 Partial enlarged view of location A in

[0059] Figure 4 Schematic structure diagram of a water seal device of a condensing gas water heater according to an embodiment of the present invention;

[0060] Figure 5 For Figure 4 Partial enlarged view of location B in

[0061] Figure 6 Schematic structure diagram of a water seal device of a condensing gas water heater according to an embodiment of the present invention from another perspective.

[0062] Explanation of the reference numerals in the drawings:

[0063]

[0064]

[0065] The realization of the objectives, functional features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the drawings. Detailed implementation manners

[0066] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0067] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, these directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0068] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, these descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0069] The present invention provides a condensing gas water heater.

[0070] In the embodiments of the present invention, as Figure 1 shown, the condensing gas water heater 10 includes a housing 11 and a blower device 12, a combustion device 13, a condensing heat exchange device 14, and a water seal device 15 provided in the housing 11.

[0071] The housing 11 includes a mounting plate 11a adapted to be mounted on a wall. The housing 11 is provided with a gas inlet, an air inlet, a cold water inlet, a hot water outlet, and a smoke exhaust port 11b. The blower device 12 introduces air and the like into the combustion device 13. The mixed gas of air and gas burns in the combustion device 13 to generate heat for heating the condensing heat exchange device 14.

[0072] The condensing heat exchange device 14 is provided with a heat exchange water inlet and a heat exchange water outlet. The heat exchange water inlet is communicated with the cold water inlet on the housing 11, and the heat exchange water outlet is communicated with the hot water outlet on the housing 11. After the condensing heat exchange device 14 heated by the combustion device 13 exchanges heat with the cold water entering the condensing heat exchange device 14, it becomes hot water and flows out from the hot water outlet through the heat exchange water outlet of the condensing heat exchange device 14.

[0073] The condensing heat exchange device 14 is also provided with a flue gas inlet and a flue gas outlet. The flue gas inlet is communicated with the combustion device 13, and the flue gas outlet is communicated with the smoke exhaust port 11b. Thus, the relatively high-temperature flue gas generated by the combustion of the combustion device 13 enters the condensing heat exchange device 14 through the flue gas inlet. After exchanging heat with the condensing heat exchange device 14, it becomes relatively low-temperature flue gas and is discharged outdoors from the smoke exhaust port 11b through the flue gas outlet of the condensing heat exchange device 14. In this way, the latent heat of the flue gas can be fully utilized to improve the thermal efficiency of the condensing gas water heater 10.

[0074] Among them, after the relatively high-temperature flue gas exchanges heat with the condensing heat exchange device 14 and becomes relatively low-temperature flue gas, condensed water will be generated. The condensing heat exchange device 14 is communicated with the water seal device 15, so that the condensed water in the condensing heat exchange device 14 can be discharged into the water seal device 15 and then discharged through the water seal device 15.

[0075] In this embodiment, the condensing heat exchange device 14 includes a condensing heat exchange body 14a and a condensed water collecting tray 14b. The condensed water collecting tray 14b is located below the condensing heat exchange body 14a. The condensed water generated by the heat exchange of the condensing heat exchange body 14a with the flue gas accumulates in the condensed water collecting tray 14b under the action of gravity. The condensed water collecting tray 14b is communicated with the water seal device 15.

[0076] In this embodiment, the condensing gas water heater 10 further includes a gas valve 16, and the gas valve 16 is used to control the on-off of the gas inlet.

[0077] In this embodiment, the condensing gas water heater 10 further includes a controller 17, and the controller 17 is used to control the opening or closing of the condensing gas water heater 10. Specifically, in this embodiment, the controller 17 controls the opening or closing of the condensing gas water heater 10 by controlling the on-off of the gas valve 16.

[0078] The water seal device 15 will be introduced in detail below.

[0079] As Figure 2 shown, the water seal device 15 includes a water storage member 200 and a plugging member 300. The water storage member 200 has a water inlet 202, a water drain 204 and an operation port 206. The water inlet 202 and the operation port 206 are respectively located at both ends of the water storage member 200, and the water drain 204 is located on the side wall of the water storage member 200. The plugging member 300 includes a plug head structure 310 and a plug rod structure 320. The plugging member 300 is detachably installed on the operation port 206 through the plug head structure 310 and plugs the operation port 206 to prevent the condensed water from leaking out through the operation port 206. The plug rod structure 320 is provided on the plug head structure 310 and is located inside the water storage member 200, and one end of the plug rod structure 320 away from the plug head structure 310 is located between the water inlet 202 and the operation port 206.

[0080] In some embodiments, asFigure 2 As shown, when the condensation heat exchange device 14 (condensate collecting tray 14b) has a drain pipe 14c, the water storage member 200 can be sleeved on the drain pipe 14c through the water inlet 202, and one end of the water storage member 200 with the water inlet 202 can be hermetically connected to the condensation heat exchange device 14 (condensate collecting tray 14b), and a water flow channel 208 is formed between the outer wall of the drain pipe 14c and the inner wall of the water storage member 200. The drain pipe 14c can be movably sleeved on the plug rod structure 320 through its condensation water outlet, and the condensation water outlet of the drain pipe 14c is closer to the operation port 206 than the drain port 204.

[0081] In this way, when the condensation water outlet of the drain pipe 14c is immersed in the condensed water, the condensed water can effectively seal the flue gas and prevent the leakage of flue gas (prevent the flue gas from leaking out from the drain port 204). Moreover, as the condensed water in the water storage member 200 gradually increases, when the condensed water reaches the drain port 204, the condensed water can be discharged from the drain port 204 to the outside of the water seal device 15. That is, the water seal device 15 can collect and store the condensed water, can also seal the flue gas through the collected and stored condensed water, and can discharge the condensed water.

[0082] In addition, when the condensed water in the water storage member 200 and the drain pipe 14c freezes to form ice blocks, before using the condensing gas water heater 10 again, the plug structure 310 can be removed from the water storage member 200. When removing the plug structure 310, the plug structure 310 and the plug rod structure 320 can take out the ice blocks in the water storage member 200 and the drain pipe 14c, so as to achieve the purpose of taking out the ice blocks. That is, the above-mentioned water seal device 15 also has the effect of facilitating the removal of ice blocks.

[0083] In this embodiment, there are many ways for one end of the water storage member 200 with the water inlet 202 to be hermetically connected to the condensation heat exchange device 14 (condensate collecting tray 14b), for example, glue sealing, interference plugging sealing or sealing ring sealing.

[0084] In this embodiment, in the direction from the water inlet 202 to the operation port 206, the inner diameter of the water storage member 200 gradually increases. In this way, it is more convenient to take out the ice blocks in the water storage member 200. In this embodiment, in the direction from the water inlet 202 to the operation port 206, the outer diameter of the water storage member 200 gradually increases. In this way, in the direction from the water inlet 202 to the operation port 206, the wall thickness of the water storage member 200 can be substantially unchanged.

[0085] In this embodiment, in the direction from the water inlet 202 to the operation port 206, the outer diameter of the drain pipe 14c gradually decreases. In this way, it is more convenient to take out the ice cubes in the water storage member 200. In this embodiment, in the direction from the water inlet 202 to the operation port 206, the inner diameter of the drain pipe 14c gradually decreases. In this way, in the direction from the water inlet 202 to the operation port 206, the wall thickness of the drain pipe 14c can be substantially unchanged.

[0086] In some embodiments, as Figures 3 - 5 shown, the water storage member 200 includes an outer water storage portion 210 and an inner water storage portion 220. One end of the inner water storage portion 220 is located inside the outer water storage portion 210, and the other end is located outside the outer water storage portion 210. A water flow channel 208 is formed between the outer wall of the inner water storage portion 220 and the inner wall of the outer water storage portion 210. The water inlet 202 is provided at one end of the inner water storage portion 220 located outside the outer water storage portion 210, the operation port 206 is provided at one end of the outer water storage portion 210 away from the water inlet 202, and the drain port 204 is provided on the side wall of the outer water storage portion 204. The end of the inner water storage portion 220 located inside the outer water storage portion 210 is closer to the operation port 206 relative to the drain port 204. The inner water storage portion 220 is movably sleeved on the plug rod structure 320.

[0087] In this way, when one end of the inner water storage portion 220 located inside the outer water storage portion 210 is immersed in the condensed water, the condensed water can effectively seal the flue gas and prevent smoke leakage. Moreover, as the condensed water in the water storage member 200 gradually increases, when the condensed water reaches the drain port 204, the condensed water can be discharged from the drain port 204 to the outside of the water seal device 15. That is, the water seal device 15 can collect and store the condensed water, can also seal the flue gas through the collected and stored condensed water, and can discharge the condensed water. In addition, when the condensed water in the outer water storage portion 210 and the inner water storage portion 220 freezes to form ice cubes, before using the condensing gas water heater 10 again, the plug structure 310 can be detached from the water storage member 200. When the plug structure 310 is detached, the plug structure 310 and the plug rod structure 320 can take out the ice cubes in the outer water storage portion 210 and the inner water storage portion 220, achieving the purpose of taking out the ice cubes. That is, the above-mentioned water seal device 15 also has the effect of facilitating the removal of ice cubes. And the water storage member 200 includes an outer water storage portion 210 and an inner water storage portion 220, and the inner water storage portion 220 and the condensed water collection tray 14b can be conducted through a hose, which is very convenient for installation. At this time, the drain pipe 14c of the condensation heat exchange device 14 can be omitted.

[0088] In this embodiment, the end of the outer water storage portion 210 away from the operation port 206 has an annular end plate 212, and the inner water storage portion 220 is hermetically inserted on the annular end plate 212. Among them, the sealing method between the inner water storage portion 220 and the annular end plate 212 can be glue sealing, interference plugging sealing or sealing ring sealing. Specifically, in this embodiment, the outer water storage portion 210 and the inner water storage portion 220 are integrally formed.

[0089] In this embodiment, in the direction from the water inlet 202 to the operation port 206, the inner diameter of the outer water storage part 210 gradually increases. In this way, it is more convenient to take out the ice cubes in the outer water storage part 210. In this embodiment, in the direction from the water inlet 202 to the operation port 206, the outer diameter of the outer water storage part 210 gradually increases. In this way, in the direction from the water inlet 202 to the operation port 206, the wall thickness of the outer water storage part 210 can be substantially unchanged.

[0090] In this embodiment, in the direction from the water inlet 202 to the operation port 206, the outer diameter of the inner water storage part 220 gradually decreases. In this way, it is more convenient to take out the ice cubes in the outer water storage part 210. In this embodiment, in the direction from the water inlet 202 to the operation port 206, the inner diameter of the inner water storage part 220 gradually decreases. In this way, in the direction from the water inlet 202 to the operation port 206, the wall thickness of the inner water storage part 220 can be substantially unchanged.

[0091] In this embodiment, the plug structure 310 includes a sealing part 312 and a sealing ring 314. The sealing ring 314 is sleeved on the sealing part 312, and the outer side and the inner side of the sealing ring 314 are respectively in contact with the inner wall of the operation port 206 and the sealing part 312. In this way, it is very convenient for the plug structure 310 to block the operation port 206 to prevent liquid leakage, and it is also convenient for the plug structure 310 to be detachably connected to the operation port 206. It can be understood that in other embodiments, as Figure 2 shown, the sealing part 312 can be press-fitted into the operation port 206, that is, the sealing part 312 is in interference fit with the operation port 206. In this way, it is also very convenient for the plug structure 310 to block the operation port 206 to prevent liquid leakage, and it is also convenient for the plug structure 310 to be detachably connected to the operation port 206. At this time, the sealing ring 314 can be omitted.

[0092] Specifically, in this embodiment, an installation groove is formed by inverting the sealing part 312, and the sealing ring 314 is arranged in the installation groove.

[0093] In this embodiment, the plugging member 300 further includes a fixing structure 330. The plug head structure 310 further includes a fixing portion 316. The fixing portion 316 is connected to the sealing portion 312, and the sealing portion 312 is closer to the water inlet 202 than the fixing portion 316. The outer side of the fixing portion 316 is spaced from the inner wall of the operation port 206. The fixing structure 330 is detachably connected to the outer water storage portion 210 and the fixing portion 316 respectively. The fixing structure 330 can fix the plug head structure 310 more firmly on the outer water storage portion 210. Moreover, when disassembling the plugging member 300, the fixing structure 330 can be disassembled first, and then the plugging member 300 can be pulled to separate the sealing portion 312 from the outer water storage portion 210. In this way, both the firm connection between the plug head structure 310 and the outer water storage portion 210 can be realized, and the disassembly of the plug head structure 310 is facilitated. Specifically, in this embodiment, the fixing structure 330 is a plug pin. More specifically, in this embodiment, there are multiple (greater than or equal to two) fixing structures 330, and the multiple fixing structures 330 are arranged around the fixing portion 316.

[0094] In this embodiment, the plug head structure 310 further includes an operation portion 318. The operation portion 318 is located outside the outer water storage portion 210 and is connected to the side of the fixing portion 316 away from the sealing portion 312. In this way, it is more convenient to disassemble the plug head structure 310.

[0095] In this embodiment, lugs facing the water inlet 202 are provided at the edge of the operation portion 318. The outer water storage portion 210 is provided with avoidance grooves 214 corresponding to the lugs, and the lugs are received in the avoidance grooves 214. In this way, it is more convenient to disassemble the plug head structure 310. In this embodiment, there are multiple lugs and avoidance grooves 214, and they are arranged in one-to-one correspondence.

[0096] In this embodiment, the sealing portion 312, the fixing portion 316 and the operation portion 318 are integrally formed. In this way, it is more convenient to manufacture the plug head structure 310.

[0097] In this embodiment, a groove 310a is formed by inverting one end of the plug head structure 310 close to the water inlet 202. The plug rod structure 320 is arranged at the bottom of the groove 310a. The groove 310a can hold condensed water, so that when the condensed water in the groove 310a freezes, it is more convenient to take out the ice cubes in the outer water storage portion 210 and the inner water storage portion 220 (drain pipe 14c).

[0098] Specifically, in this embodiment, the groove 310a extends from one end of the sealing portion 312 close to the water inlet 202 to the fixing portion 316. The bottom of the groove 310a is an arc surface 3162 protruding towards the water inlet 202. The side wall of the groove 310a includes a first side wall 3122 located at the sealing portion 312, a second side wall 3164 located at the fixing portion 316, and a step surface 3124 connecting the first side wall 3122 and the second side wall 3164. The first side wall 3122 is located on the outer periphery of the second side wall 3164. The inner wall surface of the groove 310a includes the arc surface 3162, the first side wall 3122, the second side wall 3164, and the step surface 3124, which is more convenient for taking out the ice cubes in the outer water storage portion 210 and the inner water storage portion 220 (drain pipe 14c).

[0099] In this embodiment, the plug rod structure 320 includes a rod body 322 and rod bones 324. The rod body 322 is arranged on the plug head structure 310, and one end of the rod body 322 away from the plug head structure 310 is located between the operation port 206 and the water inlet 202. Specifically, in this embodiment, the rod body 322 is arranged on the arc surface 3162 of the groove 310a.

[0100] In this embodiment, one end of the rod body 322 away from the groove 310a is adjacent to the drain port 204. In some embodiments, one end of the rod body 322 away from the groove 310a is flush with the lower edge of the drain port 204 close to the operation port 206, or slightly lower than the lower edge of the drain port 204 close to the operation port 206. In some embodiments, one end of the rod body 322 away from the groove 310a can also be flush with the upper edge of the drain port 204 away from the operation port 206, or slightly higher than the upper edge of the drain port 204 away from the operation port 206.

[0101] The rod bones 324 are arranged on the rod body 322. There are multiple rod bones 324, and the multiple rod bones 324 are divided into several rod bone groups 324a. And the several rod bone groups 324a are arranged at intervals along the extending direction of the rod body 322, that is, the several rod bone groups 324a are respectively located at different heights of the rod body 322. In this way, it is more convenient for taking out the ice cubes in the outer water storage portion 210 and the inner water storage portion 220 (drain pipe 14c).

[0102] Among them, the rod bone group 324a can include one or several rod bones 324. The number of rod bones 324 in two adjacent rod bone groups 324a can be the same or different, and the rod bones 324 in two adjacent rod bone groups 324a can be aligned or staggered in the extending direction of the rod body 322.

[0103] Specifically, in this embodiment, the rod bone group 324a includes a plurality of rod bones 324. The plurality of rod bones 324 of the rod bone group 324a are arranged at intervals and surround the rod body 322 for one week. That is, the plurality of rod bones 324 of the rod bone group 324a are located at the same height of the rod body 322, but are arranged at intervals in the circumferential direction of the rod body 322. In this way, it is more convenient to take out the ice cubes in the external water storage part 210 and the internal water storage part 220 (drain pipe 14c). More specifically, in this embodiment, the number of rod bones 324 of the rod bone group 324a is four.

[0104] Specifically, in this embodiment, the number of rod bones 324 of adjacent two rod bone groups 324a is the same. The rod bones 324 of adjacent two rod bone groups 324a are directly opposite in the extending direction of the rod body 322. In this way, it is more conducive to forming the rod blocking structure 320.

[0105] In this embodiment, the rod bone 324 is arranged at an angle with the rod body 322, and the end of the rod bone 324 away from the rod body 322 faces the end where the operation port 202 is located. In this way, it is more convenient to take out the ice cubes in the external water storage part 210 and the internal water storage part 220 (drain pipe 14c).

[0106] In this embodiment, in the extending direction of the rod bone 324 away from the rod body 322, the outer diameter of the rod bone 324 gradually decreases. In this way, it is more convenient to take out the ice cubes in the external water storage part 210 and the internal water storage part 220 (drain pipe 14c).

[0107] In this embodiment, the rod bone 324 is arc-shaped, and the side of the rod bone 324 facing the water inlet 202 bulges outward. In this way, it is more convenient to take out the ice cubes in the external water storage part 210 and the internal water storage part 220 (drain pipe 14c).

[0108] In this embodiment, the water seal device 15 further includes a drainage member 400. One end of the drainage member 400 is communicated with the drainage port 204, and the end of the drainage member 400 away from the drainage port 204 has a water outlet 402. Arranging the drainage member 400 is more convenient for the condensate to be discharged.

[0109] In this embodiment, the water seal device 15 further includes a connecting member 500. The connecting member 500 communicates the drainage port 204 with the end of the drainage member 400 away from the water outlet 402.

[0110] In this embodiment, the water seal device 15 further includes a protective member 600. The connecting member 500 is a hollow structure with openings at both ends. One end of the connecting member 500 is communicated with the drainage port 204, and the side wall of the connecting member 500 is connected to the end of the drainage member 400 away from the water outlet 402. The protective member 600 is detachably installed at the end of the connecting member 500 away from the drainage port 204 and blocks the end of the connecting member 500 away from the drainage port 204. In this way, by disassembling the protective member 600, the ice cubes in the connecting member 500 can be cleaned.

[0111] In this embodiment, the protective member 600 includes a protective sleeve 610 and a gasket 620. The protective sleeve 610 is detachably sleeved on one end of the connecting member 500 away from the drain opening 204, and the gasket 620 is disposed between the protective sleeve 610 and one end of the connecting member 500 away from the drain opening 204. Specifically, in this embodiment, the protective sleeve 610 is threadedly connected to one end of the connecting member 500 away from the drain opening 204.

[0112] In this embodiment, the extending direction of the drain member 400 is the same as the extending direction of the external water storage portion 210, and the water outlet 402 and the operation port 206 are located at the same end. It can be understood that in other embodiments, as Figure 2 shown, the extending direction of the drain member 400 can also be inclined with respect to the extending direction of the external water storage portion 210. In this embodiment, the extending direction of the connecting member 500 is perpendicular to the extending direction of the external water storage portion 210. It can be understood that in other embodiments, the extending direction of the connecting member 500 can also be inclined with respect to the extending direction of the external water storage portion 210.

[0113] In this embodiment, both the water outlet 402 and the operation port 206 are exposed from one end of the housing 11 of the condensing gas water heater 10 away from the smoke exhaust port 11b. In this way, it is more convenient to disassemble the plugging member 300 and drain the condensed water. More specifically, in this embodiment, when the condensing gas water heater 10 is installed on the wall, the water outlet 402 and the operation port 206 are closer to the ground than the smoke exhaust port 11b. Specifically, in this embodiment, the outer wall of the water outlet 402 is provided with threads, so that it is very convenient to externally connect a water guide pipe to the water outlet 402 to drain the condensed water to a preset area.

[0114] In this embodiment, the water storage member 200, the drain member 400, and the connecting member 500 are integrally formed. Specifically, in this embodiment, a separation groove is formed between the water storage member 200 and the connecting member 500, so that the operation port 206 and the water outlet 402 are separated.

[0115] In this embodiment, as Figure 3 and Figure 6As shown, the water seal device 15 further includes a first liquid level sensor 700. The first liquid level sensor 700 is provided on the drain part 400 and is located between the water outlet 402 and the drain port 204, and is used to obtain a first liquid level signal of the drain part 400 at the position where the first liquid level sensor 700 is located. The first liquid level sensor 700 is electrically connected to the controller 17. Thus, when the water outlet 402 is blocked, the condensed water in the drain part 400 cannot be discharged, the condensed water gradually accumulates, and the water level continuously rises. When the condensed water reaches the first liquid level sensor 700, after the first liquid level sensor 700 senses the condensed water, the first liquid level sensor 700 obtains the first liquid level signal of the drain part 400 at the position where the first liquid level sensor 700 is located, and transmits this liquid level signal to the controller 17. The controller 17 turns off the condensing gas water heater 10 to achieve flameout protection. Furthermore, it can effectively avoid the situation that the condensed water flows back into the smoke exhaust port 11b and the combustion device 13 and affects combustion.

[0116] In this embodiment, a control method for a condensing gas water heater is further provided, including the following steps:

[0117] Step S910: Obtain the liquid level signal at the first position of the drain part, and the first position is located between the water outlet and the drain port.

[0118] Step S920: If there is a liquid level signal at the first position, turn off the condensing gas water heater.

[0119] Specifically, in this embodiment, if there is no liquid level signal at the first position, the condensing gas water heater continues to operate. In this embodiment, the first position of the drain part 400 is the position where the first liquid level sensor 700 is located.

[0120] In this embodiment, the water seal device 15 further includes a second liquid level sensor 800. The second liquid level sensor 800 is provided on the drain part 400 and is located between the water outlet 402 and the drain port 204, and is used to obtain a second liquid level signal of the drain part 400 at the position where the second liquid level sensor 800 is located. The second liquid level sensor 800 is electrically connected to the controller 17. Thus, when both the first liquid level sensor 700 and the second liquid level sensor 800 sense the condensed water, the first liquid level sensor 700 obtains the first liquid level signal of the drain part 400 at the position where the first liquid level sensor 700 is located, the second liquid level sensor 800 obtains the second liquid level signal of the drain part 400 at the position where the second liquid level sensor 800 is located, and transmits the first liquid level signal and the second liquid level signal to the controller 17. The controller 17 turns off the condensing gas water heater 10 to achieve flameout protection. On the basis of setting the first liquid level sensor 700, adding the second liquid level sensor 800 can effectively avoid false alarms and cause the condensing gas water heater 10 to be falsely turned off.

[0121] In some embodiments, such asFigure 3 As shown, the second liquid level sensor 800 and the first liquid level sensor 700 are located at the same height position of the drain member 400. The second liquid level sensor 800 and the first liquid level sensor 700 are arranged around the drain member 400 along the circumferential direction of the drain member 400.

[0122] In some embodiments, as Figure 6 shown, the second liquid level sensor 800 and the first liquid level sensor 700 are arranged at intervals in the extending direction of the drain member 400, and the first liquid level sensor 700 is closer to the water outlet 402 than the second liquid level sensor 800.

[0123] In this embodiment, a control method for a condensing gas water heater is further provided, including the following steps:

[0124] Step S930, obtaining the liquid level signals at the first position and the second position of the drain member, both the first position and the second position being located between the water outlet and the drain port.

[0125] Step S940, if there are liquid level signals at both the first position and the second position, turning off the condensing gas water heater.

[0126] Specifically, in this embodiment, if there is no liquid level signal at the first position or the second position, the condensing gas water heater continues to operate. In this embodiment, the first position of the drain member 400 is the position where the first liquid level sensor 700 is located, and the second position of the drain member 400 is the position where the second liquid level sensor 800 is located.

[0127] The above are only the optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A water seal device for a condensing gas water heater, characterized in that, Comprising: A water storage member having a water inlet, a water outlet, and an operation port, the water inlet and the operation port are respectively located at two ends of the water storage member, and the water outlet is located on the side wall of the water storage member; And A plugging member, the plugging member includes a plug head structure and a plug rod structure provided on the plug head structure, the plugging member is detachably installed on the operation port through the plug head structure, and the plug head structure plugs the operation port, the plug rod structure is located inside the water storage member, and one end of the plug rod structure away from the plug head structure is located between the water inlet and the operation port.

2. The water seal device of the condensing gas water heater according to claim 1, characterized in that, The plug head structure includes a sealing portion and a sealing ring, the sealing ring is sleeved on the sealing portion, and the outer side and the inner side of the sealing ring are respectively in contact with the inner wall of the operation port and the sealing portion; Alternatively, the plug head structure includes a sealing portion, and the sealing portion is press-fitted into the operation port.

3. The water seal device of the condensing gas water heater according to claim 2, characterized in that, The plugging member further includes a fixing structure; The plug head structure further includes a fixing portion, the fixing portion is connected to the sealing portion, and the sealing portion is closer to the water inlet than the fixing portion, the outer side of the fixing portion is spaced from the inner wall of the operation port, and the fixing structure is detachably connected to the water storage member and the fixing portion respectively.

4. The water seal device of the condensing gas water heater according to claim 3, characterized in that, The plug head structure further includes an operation portion, the operation portion is located outside the water storage member and is connected to a side of the fixing portion away from the sealing portion.

5. The water seal device of the condensing gas water heater according to claim 4, characterized in that, The sealing portion, the fixing portion and the operation portion are integrally formed; and / or Lugs facing the water inlet are provided at the edge of the operation portion, and the water storage member is provided with avoidance grooves corresponding to the lugs, and the lugs are received in the avoidance grooves.

6. The water seal device of the condensing gas water heater according to claim 1, characterized in that A groove is recessed at one end of the plug head structure close to the water inlet, and the plug rod structure is provided on the bottom of the groove.

7. The water seal device of the condensing gas water heater according to claim 6, characterized in that, The bottom of the groove is an arc surface protruding towards the water inlet, the side wall of the groove includes a first side wall, a second side wall and a step surface, the first side wall is closer to the water inlet than the second side wall, and the first side wall is located on the outer circumference of the second side wall, and the step surface connects the first side wall and the second side wall.

8. The water seal device of the condensing gas water heater according to claim 6, characterized in that, The plug rod structure includes a rod body and rod bones, the rod body is provided on the plug head structure, and one end of the rod body away from the plug head structure is located between the operation port and the water inlet, the rod bones are provided on the rod body, there are multiple rod bones, the multiple rod bones are divided into several rod bone groups, and the several rod bone groups are arranged at intervals along the extending direction of the rod body.

9. The water seal device of the condensing gas water heater according to claim 8, characterized in that One end of the rod body away from the groove is adjacent to the water outlet; and / or Each rod bone group includes several rod bones, the several rod bones in the rod bone group are arranged at intervals and surround the rod body for one week; and / or The rod bone is arranged at an angle with the rod body, and one end of the rod bone away from the rod body faces the end where the operation port is located; and / or In the extending direction of the rod bone away from the rod body, the outer diameter of the rod bone gradually decreases; and / or The rod bone is arc-shaped, and the side of the rod bone facing the side where the water inlet is located bulges outwards.

10. The water seal device of the condensing gas water heater according to claim 1, characterized in that, The water seal device further includes a drainage member, one end of the drainage member communicates with the drainage port, and the end of the drainage member away from the drainage port has a water outlet.

11. The water seal device of the condensing gas water heater according to claim 10, characterized in that, The water seal device further includes a first liquid level sensor, the first liquid level sensor is arranged on the drainage member and is located between the water outlet and the drainage port, and is used for obtaining a first liquid level signal of the drainage member at the position where the first liquid level sensor is located.

12. The water seal device of the condensing gas water heater according to claim 10, characterized in that, The water seal device further includes a first liquid level sensor and a second liquid level sensor. The first liquid level sensor and the second liquid level sensor are both arranged on the drainage member and are both located between the water outlet and the drainage port. The first liquid level sensor is used for obtaining a first liquid level signal of the drainage member at the position where the first liquid level sensor is located, and the second liquid level sensor is used for obtaining a second liquid level signal of the drainage member at the position where the second liquid level sensor is located.

13. The water seal device of the condensing gas water heater according to claim 12, characterized in that, The first liquid level sensor and the second liquid level sensor are located at the same height position of the drainage member, and the first liquid level sensor and the second liquid level sensor are arranged around the drainage member along the circumferential direction of the drainage member; Alternatively, the first liquid level sensor and the second liquid level sensor are arranged at intervals in the extending direction of the drainage member, and the first liquid level sensor is closer to the water outlet than the second liquid level sensor.

14. The water seal device of the condensing gas water heater according to claim 10, characterized in that, The water seal device further includes a connecting member, and the connecting member communicates the drainage port with the end of the drainage member away from the water outlet.

15. The water seal device of the condensing gas water heater according to claim 14, characterized in that, The water seal device further includes a protective member. The connecting member is a hollow structure with two open ends. One end of the connecting member communicates with the drainage port, and the side wall of the connecting member is connected to the end of the drainage member away from the water outlet. The protective member is detachably installed at the end of the connecting member away from the drainage port and seals the end of the connecting member away from the drainage port.

16. The water seal device of the condensing gas water heater according to claim 14, characterized in that, The extending direction of the drainage member is the same as the extending direction of the water storage member, and the water outlet and the operation port are located at the same end; and / or The extending direction of the connecting member is perpendicular to the extending direction of the water storage member; and / or The water storage member, the drainage member and the connecting member are integrally formed.

17. The water seal device of the condensing gas water heater according to any one of claims 1-16, characterized in that, In the direction from the water inlet to the operation port, the inner diameter of the water storage member gradually increases.

18. The water seal device of the condensing gas water heater according to any one of claims 1-16, characterized in that, The water storage member includes an outer water storage part and an inner water storage part. One end of the inner water storage part is located inside the outer water storage part, and the other end is located outside the outer water storage part. A water flow channel is formed between the outer wall of the inner water storage part and the inner wall of the outer water storage part; The water inlet is arranged at one end of the inner water storage part located outside the outer water storage part, the operation port is arranged at one end of the outer water storage part away from the water inlet, and the drainage port is arranged on the side wall of the outer water storage part; One end of the inner water storage part located inside the outer water storage part is closer to the operation port than the drainage port, and the inner water storage part is movably sleeved on the plug rod structure.

19. The water seal device of the condensing gas water heater according to claim 18, wherein, In the direction from the water inlet to the operation port, the inner diameter of the outer water storage part gradually increases; and / or In the direction from the water inlet to the operation port, the outer diameter of the inner water storage part gradually decreases.

20. A condensing gas water heater, characterized in that, Comprising: A condensation heat exchange device, the condensation heat exchange device includes a drain pipe, and the drain pipe has a condensation water outlet; and The water seal device of the condensing gas water heater according to any one of claims 1-17; Wherein, the water storage member is sleeved on the drain pipe through the water inlet, and one end of the water storage member having the water inlet is hermetically connected to the condensation heat exchange device. A water flow channel is formed between the outer wall of the drain pipe and the inner wall of the water storage member. The drain pipe is movably sleeved on the plug rod structure through the condensation water outlet, and the condensation water outlet of the drain pipe is closer to the operation port than the drain port.

21. A condensing gas water heater, characterized in that, Comprising: A condensation heat exchange device, the condensation heat exchange device having a condensation water outlet; and The water seal device of the condensing gas water heater according to claim 18 or 19, wherein the water inlet is communicated with the condensation water outlet.

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