Neutralizing device and condensing gas fired apparatus

Abstract

The present application discloses a neutralizing device and a condensing gas fired apparatus. The neutralizing device comprises: a housing provided with a liquid inlet; and a liquid passing member arranged in the housing, wherein a neutralizing cavity used for containing a neutralizing agent is formed in a peripheral area, corresponding to the liquid passing member, in the housing, the neutralizing cavity is communicated with the liquid inlet, the liquid passing member is provided with a meandering liquid flow passage, a liquid inlet end of the liquid flow passage is communicated with the neutralizing cavity, and a liquid outlet end of the liquid flow passage passes through the housing.

Description

Neutralization devices and condensing gas equipment

[0001] This application claims priority to Chinese patent application No. 202321938758.0 filed on July 21, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of gas equipment, and in particular to a neutralization device and a condensing gas equipment. Background Art

[0003] As awareness of environmental protection and energy conservation grows, condensing gas appliances are increasingly popular with consumers due to their exceptionally high energy efficiency. For example, compared to conventional gas water heaters (which have a Class II energy efficiency rating of only around 89%), condensing gas water heaters can achieve efficiencies exceeding 98% (Class I energy efficiency). Fully premixed condensing gas water heaters can even reach 108%. Technical issues

[0004] The main purpose of this application is to propose a neutralization device, which aims to effectively neutralize acidic condensate water to meet discharge requirements and avoid corrosion of the discharge pipe. Technical Solutions

[0005] To achieve the above-mentioned purpose, the neutralization device proposed in this application includes: a shell and a liquid-passing part.

[0006] In one embodiment, the housing is provided with a liquid inlet.

[0007] In one embodiment, the liquid-passing member is disposed in the housing.

[0008] In one embodiment, a neutralization chamber for accommodating a neutralizer is formed in the shell in a peripheral area corresponding to the liquid-passing part, and the neutralization chamber is communicated with the liquid inlet.

[0009] In one embodiment, the liquid passage member is provided with a tortuous liquid flow channel, the liquid inlet end of the liquid flow channel is communicated with the neutralization chamber, and the liquid outlet end of the liquid flow channel passes through the shell.

[0010] In one embodiment, the liquid-passing member includes a liquid outlet pipe and a sleeve sleeved around the liquid outlet pipe.

[0011] In one embodiment, a liquid inlet channel is formed between the inner circumferential surface of the sleeve and the outer circumferential surface of the liquid outlet pipe, a liquid outlet channel is formed in the liquid outlet pipe, the liquid inlet channel has a liquid port connected to the neutralization chamber, the liquid outlet channel has a liquid outlet passing through the shell, and the liquid inlet channel is connected to the liquid outlet channel to form the liquid flow channel.

[0012] In one embodiment, the sleeve has a closed end and an open end that are axially opposite to each other.

[0013] In one embodiment, the liquid outlet is formed between the open end and the liquid outlet pipe.

[0014] In one embodiment, the liquid outlet pipe includes a first pipe section extending from the closed end toward the open end and passing through the outside of the shell, and the liquid outlet channel is formed in the first pipe section.

[0015] In one embodiment, a first overflow port is provided on the peripheral wall of the first pipe section near the closed end, the first overflow port connects the liquid inlet channel with the liquid outlet channel, and the liquid outlet is provided at one end of the first pipe section away from the first overflow port.

[0016] In one embodiment, the first overflow port includes a plurality of first overflow ports spaced apart along the circumference of the first pipe segment.

[0017] In one embodiment, each of the first overflow grooves is arranged to extend along the axial direction of the first pipe section.

[0018] In one embodiment, the shell is provided with a through hole for the first pipe section to pass through.

[0019] In one embodiment, a bushing is provided around the periphery of the through hole and is sleeved around the periphery of the first pipe section.

[0020] In one embodiment, the bushing is interference fit with the first pipe section.

[0021] In one embodiment, the liquid outlet pipe further includes a second pipe section extending from the closed end toward away from the open end.

[0022] In one embodiment, an overflow channel communicating with the liquid outlet channel is formed in the second pipe section, and the second pipe section is provided with a second overflow port, and the neutralization chamber is communicated with the overflow channel via the second overflow port.

[0023] In one embodiment, the second overflow port includes a plurality of second overflow grooves spaced apart along the circumference of the second pipe segment, and each of the second overflow grooves extends along the axial direction of the second pipe segment.

[0024] In one embodiment, the housing includes a shell body and an end cover connected to the shell body.

[0025] In one embodiment, the liquid-passing member is disposed in the shell body.

[0026] In one embodiment, the shell body is provided with an opening communicating with the neutralization cavity, and the end cover is used to open or close the opening.

[0027] In one embodiment, the liquid inlet is provided on the shell body or the end cover.

[0028] In one embodiment, the shell body includes a first end wall and a second end wall that are opposite to each other, and a joint provided on a side of the second end wall facing away from the first end wall.

[0029] In one embodiment, the first end wall is provided with a through hole for the liquid outlet of the liquid flow channel to pass through, and the joint is a hollow structure with two ends passing through.

[0030] In one embodiment, one end of the connector passes through the second end wall, the other end of the connector forms the opening, the end cover is detachably connected to the connector, the end cover is provided with the liquid inlet, and the liquid inlet is connected to the opening.

[0031] The present application also proposes a condensing gas device, comprising the neutralization device as described above. Beneficial effects

[0032] The neutralization device of the present invention includes a housing and a liquid flow passage. The housing is provided with a liquid inlet; the liquid flow passage is disposed within the housing. A neutralization chamber for accommodating a neutralizing agent is formed in the housing, corresponding to the outer region of the liquid flow passage. The neutralization chamber is connected to the liquid inlet. The liquid flow passage is provided with a tortuous liquid flow channel, the liquid inlet end of the liquid flow channel being connected to the neutralization chamber, and the liquid outlet end of the liquid flow channel extending through the housing. When the neutralization device is applied to a condensing gas appliance, acidic condensed water generated by the condensing gas appliance can enter the neutralization chamber through the liquid inlet, where it can fully contact and react with the neutralizing agent to produce a neutralization reaction, thereby neutralizing the acidic condensed water into a neutral liquid. The neutral liquid enters the liquid flow channel and is ultimately discharged from the housing through the liquid outlet end of the liquid flow channel. The tortuous liquid flow channel can extend its length within a limited space and increase its resistance, allowing the acidic condensed water to fully react with the neutralizing agent within the neutralization chamber before being discharged, thereby ensuring that the acidic condensed water is completely neutralized into a neutral liquid. In this way, the acidic condensate water can be effectively neutralized to meet the discharge requirements and avoid corrosion of the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0034] FIG1 is a schematic cross-sectional view of an embodiment of a neutralization device in the present application;

[0035] FIG2 is a schematic cross-sectional view of the shell body of the neutralization device in FIG1 ;

[0036] FIG3 is a schematic cross-sectional view of the end cover of the neutralization device in FIG1 ;

[0037] FIG4 is a schematic cross-sectional structural diagram of the liquid-passing part of the neutralization device in FIG1 .

[0038] Description of Figure Numbers:

[0039] Reference numerals: Reference numerals: 100 neutralizing device 20 liquid passing member 10 housing 201 liquid flow channel 101 liquid inlet 2011 liquid inlet channel 102 neutralizing chamber 2012 liquid outlet channel 103 opening 202 overflow channel 11 housing body 21 liquid outlet pipe 111 first end wall 211 first pipe section 112 second end wall 2111 liquid outlet 113 bushing 2112 first overflow port 114 joint 212 second pipe section 1141 external thread 2121 second overflow port 12 end cap 22 sleeve 121 cover body 221 closed end 1211 internal thread 222 open end 122 connecting pipe portion 223 liquid passing port

[0040] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. Modes for Carrying Out the Invention

[0041] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0044] Since condensing gas equipment improves energy efficiency by making full use of the latent heat of vaporization in the flue gas, condensate will inevitably be produced. Since the flue gas after combustion contains acidic substances, the pH value of the condensate generally shows acidity. Acidic condensate will corrode the pipeline and affect the life of the pipeline. Therefore, the condensate cannot be discharged directly and needs to be neutralized.

[0045] This application proposes a neutralization device 100. This neutralization device 100 can be applied to condensing gas equipment to neutralize acidic condensed water generated by the equipment into a neutral liquid for discharge. Condensing gas equipment includes, but is not limited to, condensing gas water heaters and condensing wall-mounted boilers. Of course, this neutralization device 100 can also be applied to other equipment or piping systems that require neutralization of acidic liquids.

[0046] Referring to Figure 1 , in one embodiment of the present application, the neutralization device 100 includes a housing 10 and a liquid flow member 20. The housing 10 is provided with a liquid inlet 101; the liquid flow member 20 is disposed within the housing 10. A neutralization chamber 102 for accommodating a neutralizer is formed within the housing 10, corresponding to a peripheral area of ​​the liquid flow member 20. The neutralization chamber 102 is communicated with the liquid inlet 101. The liquid flow member 20 is provided with a tortuous liquid flow channel 201. The liquid inlet end of the liquid flow channel 201 is communicated with the neutralization chamber 102, and the liquid outlet end of the liquid flow channel 201 extends through the housing 10.

[0047] Specifically, the neutralization device 100 includes a shell 10 and a liquid-passing part 20 disposed in the shell 10. The shape of the shell 10 can be set to a cylindrical, square cylindrical or other special-shaped cylindrical structure according to actual needs, and is not specifically limited here. The liquid-passing part 20 is disposed in the shell 10, and a certain space is formed between the inner wall surface of the shell 10 and the outer wall surface of the liquid-passing part 20, so that a neutralization chamber 102 is formed in the outer area of ​​the shell 10 corresponding to the liquid-passing part 20. The neutralization chamber 102 is used to place a neutralizer, which can be solid or liquid, for example, alkaline neutralizing particles can be placed in the neutralization chamber 102. The shell 10 is provided with a liquid inlet 101 connected to the neutralization chamber 102, and the liquid inlet 101 is used to connect to an external pipeline. For example, when the neutralization device 100 is applied to a condensing gas water heater, the liquid inlet 101 can be connected to the condensed water outlet of the condensing gas water heater. In this way, the acidic condensed water generated by the condensing gas water heater can enter the neutralization chamber 102 through the liquid inlet 101, and then fully contact with the neutralizer to undergo a neutralization reaction, so that the acidic condensed water is neutralized into a neutral liquid.

[0048] The liquid passage 20 is provided with a tortuous liquid flow channel 201. That is, the liquid flow channel 201 presents a non-linear flow path from the liquid inlet end to the liquid outlet end. For example, the liquid flow channel 201 can be designed as a U-shaped channel, an S-shaped channel, a spiral channel, etc., which are not specifically limited here. The liquid inlet end of the liquid flow channel 201 is connected to the neutralization chamber 102, and the liquid outlet end of the liquid flow channel 201 passes through the shell 10. In this way, the neutralized neutral liquid in the neutralization chamber 102 can enter the liquid flow channel 201 and eventually be discharged from the liquid outlet end of the liquid flow channel 201 to the outside of the shell 10. The tortuous arrangement of the liquid flow channel 201 can extend the length of the liquid flow channel 201 within a limited space and increase the resistance of the liquid flow channel 201, so that the acidic condensed water can fully react with the neutralizer in the neutralization chamber 102 before being discharged, thereby ensuring that the acidic condensed water can be completely neutralized into a neutral liquid.

[0049] The neutralization device 100 of the present invention includes a housing 10 and a liquid-passing member 20. The housing 10 is provided with a liquid inlet 101. The liquid-passing member 20 is disposed within the housing 10. A neutralization chamber 102 for accommodating a neutralizing agent is formed within the housing 10, corresponding to the peripheral area of ​​the liquid-passing member 20. The neutralization chamber 102 communicates with the liquid inlet 101. The liquid-passing member 20 is provided with a tortuous liquid flow channel 201. The liquid inlet end of the liquid flow channel 201 communicates with the neutralization chamber 102, and the liquid outlet end of the liquid flow channel 201 extends through the housing 10. When the neutralization device 100 is applied to a condensing gas appliance, acidic condensate generated by the condensing gas appliance can enter the neutralization chamber 102 through the liquid inlet 101, where it can fully contact the neutralizing agent to undergo a neutralization reaction, thereby neutralizing the acidic condensate into a neutral liquid. The neutral liquid then enters the liquid flow channel 201 and is ultimately discharged from the housing 10 through the liquid outlet end of the liquid flow channel 201. The tortuous arrangement of liquid flow channel 201 can extend its length within a limited space and increase its resistance, allowing the acidic condensate to fully react with the neutralizer within neutralization chamber 102 before being discharged, ensuring that the acidic condensate is completely neutralized into a neutral liquid. This effectively neutralizes the acidic condensate to meet discharge requirements and prevents corrosion of the discharge pipe.

[0050] Please refer to Figures 1 and 4. In one embodiment, the liquid overflow component 20 includes a liquid outlet pipe 21 and a sleeve 22 sleeved on the periphery of the liquid outlet pipe 21. A liquid inlet channel 2011 is formed between the inner circumferential surface of the sleeve 22 and the outer circumferential surface of the liquid outlet pipe 21. A liquid outlet channel 2012 is formed in the liquid outlet pipe 21. The liquid inlet channel 2011 has a liquid overflow port 223 connected to the neutralization chamber 102. The liquid outlet channel 2012 has a liquid outlet port 2111 that passes through the shell 10. The liquid inlet channel 2011 is connected to the liquid outlet channel 2012 to form the liquid flow channel 201.

[0051] In one embodiment, the liquid passage member 20 includes a liquid outlet pipe 21 and a sleeve 22. The liquid outlet pipe 21 and sleeve 22 can be integrally formed or assembled together via an assembly structure. In one embodiment, the liquid outlet pipe 21 and sleeve 22 are integrally formed, which simplifies the manufacturing process while ensuring the sealing of the connection between the two components. An annular liquid inlet channel 2011 is formed between the inner circumference of the sleeve 22 and the outer circumference of the liquid outlet pipe 21. The liquid inlet channel 2011 has a liquid passage opening 223 that communicates with the neutralization chamber 102. The liquid passage opening 223 can be formed on the end surface of the sleeve 22 or on the circumference of the sleeve 22. For example, in one embodiment, the sleeve 22 and the liquid outlet pipe 21 both extend vertically, with the bottom of the sleeve 22 being open. An annular liquid passage opening 223 is formed between the open bottom end 222 of the sleeve 22 and the liquid outlet pipe 21. The bottom end of the liquid outlet pipe 21 extends through the bottom wall of the housing 10 (i.e., the first end wall 111). A liquid outlet 2111 is provided at the bottom end of the liquid outlet pipe 21. Thus, the neutralized liquid in the neutralization chamber 102 enters the liquid inlet channel 2011 through the liquid outlet 223 and is then discharged from the housing 10 through the liquid outlet 2111 of the liquid outlet channel 2012. The entire liquid flow channel 201 has a simple structure, making it easy to manufacture.

[0052] As shown in Figure 4, in one embodiment, the sleeve 22 has a closed end 221 and an open end 222 arranged opposite to each other in the axial direction, and the liquid outlet 223 is formed between the open end 222 and the liquid outlet pipe 21. The liquid outlet pipe 21 includes a first pipe section 211 extending from the closed end 221 toward the open end 222 to pass through the outside of the shell 10, and the liquid outlet channel 2012 is formed in the first pipe section 211. The first overflow port 2112 is provided on the peripheral wall of the first pipe section 211 near the closed end 221. The first overflow port 2112 connects the liquid inlet channel 2011 with the liquid outlet channel 2012, and the liquid outlet 2111 is provided at one end of the first pipe section 211 away from the first overflow port 2112.

[0053] Specifically, in actual use, the neutralization device 100 is generally preferably connected to the piping system in a vertical position. Accordingly, the sleeve 22 and the liquid outlet pipe 21 are both arranged to extend vertically. The top end of the sleeve 22 is a closed end 221, and the bottom end of the sleeve 22 is an open end 222. An annular liquid outlet 223 is defined between the inner edge of the open end 222 and the outer circumference of the liquid outlet pipe 21. The open end 222 of the sleeve 22 is suspended relative to the bottom wall (i.e., the first end wall 111) of the housing 10, and the neutralization chamber 102 is connected to the liquid outlet 223. The liquid outlet pipe 21 includes a vertically extending first pipe section 211. The top end of the first pipe section 211 is connected to the closed end 221 of the sleeve 22. A first overflow port 2112 is provided on the peripheral wall of the top end of the first pipe section 211. The end of the liquid inlet channel 2011, away from the liquid outlet 223, communicates with the liquid outlet channel 2012 via the first overflow port 2112. The bottom end of the first pipe section 211 forms a liquid outlet 2111. In this way, the neutral liquid in the neutralization chamber 102 enters the liquid inlet channel 2011 via the liquid outlet 223 at the bottom of the sleeve 22. When the liquid level of the neutral liquid reaches the height of the first overflow port 2112, the neutral liquid enters the liquid outlet channel 2012 of the first pipe section 211 through the first overflow port 2112 and, under the action of gravity, rapidly flows downward to the liquid outlet 2111 for discharge. In this way, the neutral liquid can stay in the liquid inlet channel 2011 for a period of time to ensure complete reaction with the neutralizer and meet the discharge requirements; when the neutral liquid enters the liquid outlet channel 2012, it can be quickly discharged under its own gravity without the need to add other power devices, which can simplify the structure and save costs.

[0054] As shown in FIG4 , in one embodiment, the first overflow port 2112 includes a plurality of first overflow troughs spaced apart along the circumference of the first pipe segment 211, each of which extends axially along the first pipe segment 211. In one embodiment, the plurality of first overflow troughs spaced apart along the circumference of the first pipe segment 211 form a fence-like first overflow port 2112. The first overflow troughs can be designed to have a relatively long length along the axial direction of the first pipe segment 211, thereby ensuring that the first overflow port 2112 has a larger opening 103 area and thus a larger flow rate. Furthermore, the width of the first overflow troughs along the circumference of the first pipe segment 211 can be designed to be relatively small, thereby filtering particulate matter contained in the condensate water and preventing it from entering the liquid outlet pipe 21. Of course, in other embodiments, the first overflow port 2112 can also be designed to have other shapes.

[0055] As shown in FIG2 , in one embodiment, the housing 10 is provided with a through-hole through which the first tube segment 211 passes. A bushing 113 is provided around the periphery of the through-hole, sleeved around the periphery of the first tube segment 211. The bushing 113 has an interference fit with the first tube segment 211. Specifically, the bushing 113 can extend from the periphery of the through-hole toward the exterior of the housing 10, or it can extend from the periphery toward the interior of the housing 10. In one embodiment, the bushing 113 extends from the periphery of the through-hole toward the exterior of the housing 10. By providing the bushing 113 with an interference fit with the first tube segment 211, the first tube segment 211 can be stably supported, thereby achieving stable assembly of the liquid-passing component 20 and the housing 10, resulting in a simple and reliable assembly structure. Of course, in other embodiments, the liquid-passing component 20 and the housing 10 can also be connected and fixed by other means (e.g., a snap-fit ​​connection, a threaded connection, etc.).

[0056] Referring to Figures 1 and 4, in one embodiment, the liquid outlet pipe 21 further includes a second pipe section 212 extending from the closed end 221 in a direction away from the open end 222. An overflow channel 202 communicating with the liquid outlet channel 2012 is formed in the second pipe section 212. The second pipe section 212 is provided with a second overflow port 2121, and the neutralization chamber 102 is communicated with the overflow channel 202 via the second overflow port 2121.

[0057] Specifically, in actual use, the neutralization device 100 is generally preferably connected to the pipeline system in a vertical position. Accordingly, the second pipe section 212 extends upward from the top closed end 221 of the cylinder. The tubular cavity of the second pipe section 212 forms an overflow channel 202, which is connected to the liquid outlet channel 2012. The second pipe section 212 is provided with a second overflow port 2121, wherein the second overflow port 2121 can be provided on the top surface of the second pipe section 212 or on the peripheral surface of the second pipe section 212. When the liquid inlet 101 is provided at the top of the housing 10, in order to prevent the acidic condensed water entering the liquid inlet 101 from directly entering the second pipe section 212, the top end of the second pipe section 212 is closed, and the second overflow port 2121 is provided on the peripheral wall of the second pipe section 212. Of course, in some embodiments, the top of the second pipe section 212 can also be opened to form a second overflow port 2121, and it is only necessary to stagger the positions of the liquid inlet 101 and the second overflow port 2121. In one embodiment, by providing the second pipe section 212 with the second overflow port 2121, when the entire neutralization device 100 is abnormally blocked, the neutral liquid cannot enter the liquid flow channel 201 through the liquid outlet 223 for discharge. At this time, the neutral liquid in the neutralization chamber 102 accumulates more and more. When the liquid level reaches the second overflow port 2121, the neutral liquid enters the overflow channel 202 of the second pipe section 212 through the second overflow port 2121, and then enters the liquid outlet channel 2012 of the first pipe section 211 through the overflow channel 202, and finally is discharged from the liquid outlet 2111 of the liquid outlet channel 2012.

[0058] In one embodiment, the second overflow port 2121 includes a plurality of second overflow troughs spaced apart along the circumference of the second pipe segment 212, each of the second overflow troughs extending axially along the second pipe segment 212. In one embodiment, the plurality of second overflow troughs spaced apart along the circumference of the second pipe segment 212 form a fence-like second overflow port 2121. The length of the second overflow troughs along the axial direction of the second pipe segment 212 can be designed to be relatively long, thereby ensuring that the second overflow port 2121 has a larger opening 103 area as a whole, thereby providing a larger flow rate. At the same time, the width of the second overflow troughs along the circumference of the second pipe segment 212 can be designed to be relatively small, thereby filtering particulate matter contained in the condensate water to prevent the particulate matter contained in the condensate water from entering the liquid outlet pipe 21. Of course, in other embodiments, the second overflow port 2121 can also be designed to have other shapes.

[0059] Please refer to Figures 1 to 3. Based on the above embodiments, in one embodiment, the shell 10 includes a shell body 11 and an end cover 12 connected to the shell body 11, the liquid-passing part 20 is arranged in the shell body 11, the shell body 11 is provided with an opening 103 communicating with the neutralization chamber 102, the end cover 12 is used to open or cover the opening 103, and the liquid inlet 101 is provided in the shell body 11 or the end cover 12.

[0060] In one embodiment, when the neutralizer needs to be replaced, the end cap 12 can be opened to replenish the neutralizer into the neutralization chamber 102 through the opening 103. In one embodiment, the diameter of the opening 103 is larger than the maximum outer diameter of the liquid-passing member 20. In this way, the liquid-passing member 20 can be assembled into or removed from the housing body 11 through the opening 103, thereby improving the ease of assembly and disassembly of the liquid-passing member 20 and the housing body 11, and facilitating removal of the liquid-passing member 20 from the housing body 11 for cleaning.

[0061] In one embodiment, the shell body 11 includes a first end wall 111 and a second end wall 112 relative to each other, and a joint 114 provided on the side of the second end wall 112 away from the first end wall 111. The first end wall 111 is provided with a through hole for the liquid outlet end of the liquid flow channel 201 to pass through. The joint 114 is a hollow structure with two ends through. One end of the joint 114 passes through the second end wall 112, and the other end of the joint 114 forms the opening 103. The end cover 12 is detachably connected to the joint 114. The end cover 12 is provided with the liquid inlet 101, and the liquid inlet 101 is connected to the opening 103.

[0062] Specifically, in actual use, the neutralization device 100 is generally placed in a vertical position, and accordingly, the shell body 11 is extended vertically, and the first end wall 111 is located below the second end wall 112. The joint 114 is protruding from the side of the second end wall 112 away from the first end wall 111. The joint 114 and the second end wall 112 can be integrally formed or assembled through an assembly structure. In one embodiment, the joint 114 is integrally formed with the second end wall 112 to simplify the assembly structure and ensure structural strength. The joint 114 can specifically be a hollow cylindrical structure with both ends passing through, and the joint 114 is provided to facilitate the installation and fixation of the end cover 12. The end cover 12 and the joint 114 are detachably connected, including but not limited to threaded connection, snap connection, etc. In one embodiment, the end cover 12 is threadedly connected to the joint 114, which has a simple structure and is easy to assemble. For example, in one embodiment, the end cap 12 includes a cap body 121 and a connecting pipe portion 122. The cap body 121 includes a top wall and a side wall extending downward from the periphery of the top wall. The inner periphery of the side wall is provided with an internal thread 1211, and the outer periphery of the connector 114 is provided with an external thread 1141. The cap body 121 is sleeved around the outer periphery of the connector 114 and is threadedly fixed. The connecting pipe portion 122 is protruding from the top of the end cap 12. The connecting pipe portion 122 is in the shape of a tube that extends vertically. The top of the connecting pipe portion 122 is open to form the liquid inlet 101, which facilitates connection to an external pipeline through the connecting pipe portion 122.

[0063] This application also provides a condensing gas appliance, which includes a neutralization device 100. The specific structure of the neutralization device 100 is similar to that of the aforementioned embodiments. Since this condensing gas appliance utilizes all of the technical solutions of all of the aforementioned embodiments, it at least has all of the benefits provided by the technical solutions of the aforementioned embodiments, and thus will not be described in detail here. The condensing gas appliance includes, but is not limited to, condensing gas water heaters, condensing wall-mounted boilers, and the like.

[0064] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A neutralization device, wherein: The neutralization device comprises: a housing having a liquid inlet; and A liquid-passing piece is arranged in the shell, and a neutralization chamber for accommodating a neutralizer is formed in the shell corresponding to the peripheral area of ​​the liquid-passing piece, and the neutralization chamber is communicated with the liquid inlet. The liquid-passing piece is provided with a tortuous liquid flow channel, and the liquid inlet end of the liquid flow channel is communicated with the neutralization chamber, and the liquid outlet end of the liquid flow channel passes through the shell.

2. The neutralization device according to claim 1, wherein: The liquid-passing part includes a liquid outlet pipe and a sleeve sleeved on the periphery of the liquid outlet pipe, a liquid inlet channel is formed between the inner circumferential surface of the sleeve and the outer circumferential surface of the liquid outlet pipe, a liquid outlet channel is formed in the liquid outlet pipe, the liquid inlet channel has a liquid passage port connected to the neutralization chamber, the liquid outlet channel has a liquid outlet passing through the shell, and the liquid inlet channel is connected to the liquid outlet channel to form the liquid flow channel.

3. The neutralization device according to claim 2, wherein: The sleeve has a closed end and an open end that are axially opposite to each other, the liquid outlet is formed between the open end and the liquid outlet pipe, the liquid outlet pipe includes a first pipe section extending from the closed end toward the open end to pass through the outside of the shell, the liquid outlet channel is formed in the first pipe section, a first overflow port is provided on the peripheral wall of the first pipe section close to the closed end, the first overflow port connects the liquid inlet channel with the liquid outlet channel, and the liquid outlet is provided at one end of the first pipe section away from the first overflow port.

4. The neutralization device according to claim 3, wherein: The first overflow port includes a plurality of first overflow grooves arranged at intervals along the circumference of the first pipe segment, and each of the first overflow grooves is extended along the axial direction of the first pipe segment.

5. The neutralization device according to claim 3 or 4, wherein: The shell is provided with a through hole for the first pipe section to pass through, and the periphery of the through hole is provided with a bushing sleeved on the periphery of the first pipe section, and the bushing is interference fit with the first pipe section.

6. The neutralization device according to any one of claims 3 to 5, wherein: The liquid outlet pipe also includes a second pipe section extending from the closed end toward away from the open end, an overflow channel connected to the liquid outlet channel is formed in the second pipe section, and the second pipe section is provided with a second overflow port, and the neutralization chamber is connected to the overflow channel via the second overflow port.

7. The neutralization device according to claim 6, wherein: The second overflow port includes a plurality of second overflow grooves arranged at intervals along the circumference of the second pipe segment, and each of the second overflow grooves is extended along the axial direction of the second pipe segment.

8. The neutralization device according to any one of claims 1 to 7, wherein: The shell comprises a shell body and an end cover connected to the shell body, the liquid passage piece is arranged in the shell body, the shell body is provided with an opening communicating with the neutralization chamber, the end cover is used to open or cover the opening, and the liquid inlet is arranged in the shell body or the end cover.

9. The neutralization device according to claim 8, wherein: The shell body includes a first end wall and a second end wall that are opposite to each other, and a joint arranged on the side of the second end wall away from the first end wall. The first end wall is provided with a through hole for the liquid outlet end of the liquid flow channel to pass through. The joint is a hollow structure with two ends through. One end of the joint passes through the second end wall, and the other end of the joint forms the opening. The end cover is detachably connected to the joint, and the end cover is provided with the liquid inlet, which is connected to the opening.

10. A condensing gas appliance, wherein: The condensing gas equipment comprises a neutralization device as claimed in any one of claims 1 to 9.

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