Gas water heating equipment

Abstract

The utility model discloses gas-fired water heating equipment, which relates to the technical field of water heating equipment and comprises a gas-fired water heating equipment main body and a main heat exchanger, the condensation atomization device comprises a shell, a condensation heat exchanger and an atomizer, the shell is arranged on the gas water heating equipment body and provided with a smoke inlet, a smoke outlet, a smoke channel and an atomization cavity, the smoke outlet side of the main heat exchanger communicates with the smoke inlet, the smoke inlet and the atomization cavity communicate with the smoke outlet through the smoke channel, the condensation heat exchanger is arranged in the smoke channel, and the atomizer is arranged in the atomization cavity. The atomizer is arranged on the shell, the atomization cavity is used for collecting condensate water generated by heat exchange of the condensation heat exchanger, and the atomizer is used for atomizing the condensate water in the atomization cavity. According to the technical scheme, condensate water can be drained without being externally connected with a drain pipe, and the installation convenience of the gas water heating device and the appearance integrity of the whole device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot water equipment, in particular to a gas hot water equipment. Background Art

[0002] In the context of energy conservation and emission reduction, improving the energy efficiency of gas-fired water heaters has become an industry trend. Traditional gas-fired water heaters generally achieve high energy efficiency by utilizing the latent heat of flue gas vaporization. However, this process produces a large amount of condensed water. Therefore, during installation, a longer external drain pipe is usually required to drain the condensed water into a sewer or sink, making gas-fired water heaters inconvenient to install and also affecting the appearance of the entire unit. Utility Model Content

[0003] The main purpose of the utility model is to provide a gas water heater, which aims to discharge condensed water without an external drain pipe, thereby improving the installation convenience and the appearance integrity of the gas water heater.

[0004] To achieve the above-mentioned purpose, the gas water heater proposed in this utility model includes:

[0005] The main body of the gas water heater, including the main heat exchanger; and

[0006] The condensation atomization device includes a shell, a condensation heat exchanger and an atomizer. The shell is arranged on the main body of the gas water heater. The shell has a smoke inlet, a smoke exhaust port, a smoke channel and an atomization chamber. The smoke outlet side of the main heat exchanger is connected to the smoke inlet, and the smoke inlet and the atomization chamber are respectively connected to the smoke exhaust port via the smoke channel. The condensation heat exchanger is arranged in the smoke channel, and the atomizer is arranged in the shell. The atomization chamber is used to collect condensed water generated by heat exchange of the condensation heat exchanger, and the atomizer is used to atomize the condensed water in the atomization chamber.

[0007] In one embodiment, the gas water heater further includes a piping system, which includes a water inlet pipe, a water outlet pipe, and a water supply pipe. The shell has a water inlet joint and a water outlet joint. The water inlet pipe is connected to the water inlet end of the condensing heat exchanger via the water inlet joint. The water outlet end of the condensing heat exchanger is connected to one end of the water supply pipe via the water outlet joint. The other end of the water supply pipe is connected to the water inlet end of the main heat exchanger, and the water outlet end of the main heat exchanger is connected to the water outlet pipe.

[0008] In one embodiment, the gas water heater main body has a first side wall and a second side wall opposite to each other along its width direction, the shell is arranged at the top of the gas water heater main body, the water inlet joint and the water outlet joint are arranged at the bottom of the shell, and the portion of the shell where the water inlet joint and the water outlet joint are provided protrudes toward a side away from the first side wall relative to the second side wall to form an installation space enclosed with the second side wall, and the piping system is accommodated in the installation space.

[0009] In one embodiment, the main body of the gas water heater further comprises a smoke hood, which is arranged on the top of the main heat exchanger, and the bottom of the smoke hood is open toward the main heat exchanger, and a smoke outlet is provided on the top of the smoke hood, the shell is arranged on the top of the smoke hood, and the smoke inlet is arranged on the bottom wall of the shell and is connected to the smoke outlet.

[0010] In one embodiment, the shell has a guide cylinder extending upward from the periphery of the smoke inlet, and the smoke collecting hood has a smoke outlet pipe extending upward from the periphery of the smoke outlet, and the smoke outlet pipe is inserted into the guide cylinder.

[0011] In one embodiment, the smoke channel has a smoke inlet channel and a heat exchange channel that are arranged and connected in the transverse direction, the condensing heat exchanger is arranged in the heat exchange channel, the heat exchange channel includes a first sub-channel and a second sub-channel, the smoke inlet is located at the bottom of the smoke inlet channel, the smoke inlet channel, the first sub-channel and the second sub-channel are arranged and connected in sequence in the transverse direction, and the atomization chamber, the second sub-channel and the smoke exhaust port are arranged and connected in sequence in the vertical direction.

[0012] In one embodiment, the height of the smoke inlet channel is greater than the height of the first sub-channel, the housing has a guide surface facing the smoke inlet, and the guide surface is inclined downward toward a side close to the first sub-channel; and / or,

[0013] The first sub-channel extends from the smoke inlet channel toward the second sub-channel and is inclined downward;

[0014] And / or, the height of the second sub-channel is greater than the height of the first sub-channel.

[0015] In one embodiment, the shell has a water inlet joint and a water outlet joint, the condensing heat exchanger includes a heat exchange tube, the heat exchange tube includes a main heat exchange tube section, and connecting tube sections respectively arranged at both ends of the main heat exchange tube section, the main heat exchange tube section is located in the first sub-channel, the main heat exchange tube section is constructed into a tortuous serpentine pipeline structure, the two connecting tube sections are located in the second sub-channel, one of the connecting tube sections is detachably connected to the water inlet joint, and the other connecting tube section is detachably connected to the water outlet joint.

[0016] In one embodiment, the housing further comprises a water storage chamber, and the water storage chamber is located below the smoke channel.

[0017] In one embodiment, the atomization chamber is located on a side of the water storage chamber away from the smoke inlet, a baffle is provided between the smoke channel and the water storage chamber, the baffle is provided with a first connecting port connecting the water storage chamber with the smoke channel, and a second connecting port connected to the atomization chamber is provided on the side of the water storage chamber.

[0018] In one embodiment, the shell further has a sedimentation chamber, a third connecting port and a drain port, the second connecting port is connected to the sedimentation chamber, the sedimentation chamber is connected to the atomization chamber through the third connecting port, the third connecting port is connected to the drain port, the sedimentation chamber is used to settle impurities in the condensed water transported by the water storage chamber, and the gas water heater also includes a drain pipe, one end of the drain pipe is connected to the drain port, and the other end is used to discharge sewage to the outside of the gas water heater.

[0019] In one embodiment, the condensation atomization device also includes a liquid level detection module, and the liquid level detection module and the atomizer are electrically connected to the control system of the gas water heater. The liquid level detection module is used to detect the liquid level in the atomization chamber. The control system is used to control the atomizer to start when the liquid level in the atomization chamber is higher than a first preset liquid level. The control system is also used to send an alarm signal and shut down the gas water heater when the liquid level in the atomization chamber is higher than a second preset liquid level. The second preset liquid level is higher than the first preset liquid level.

[0020] In one embodiment, the liquid level detection module includes a float and a Hall sensor, a magnetic part is provided in the float, the bottom wall of the atomization chamber is provided with a fixed column extending upward, and a limit piece is provided on the top of the fixed column. The float can be movably mounted on the fixed column up and down, and the Hall sensor is provided at one end of the fixed column away from the limit piece, and the Hall sensor is electrically connected to the control system.

[0021] In one embodiment, the gas water heater body further includes a fan and a burner. The fan, the burner and the main heat exchanger are arranged from bottom to top. The fan is used to blow air into the burner and to drive the flue gas to flow from the burner toward the main heat exchanger.

[0022] The technical solution of the present invention is to provide a condensation atomization device in the main body of the gas water heater, wherein the main body of the gas water heater includes a main heat exchanger, and the condensation atomization device includes a housing, a condensation heat exchanger, and an atomizer. The housing has a smoke inlet, a smoke exhaust port, a smoke passage, and an atomizer. The smoke outlet side of the main heat exchanger is connected to the smoke inlet, and the smoke inlet and the atomizer chamber are respectively connected to the smoke exhaust port via a smoke passage. The condensation heat exchanger is arranged in the smoke passage. In this way, the high-temperature smoke generated by the operation of the gas water heater flows to the main heat exchanger for a primary heat exchange. After the primary heat exchange, the smoke can enter the smoke passage through the smoke inlet and undergo a secondary heat exchange with the condensation heat exchanger, so that the latent heat of the smoke is fully utilized. After the heat exchange, condensed water is generated on the surface of the condensation heat exchanger. The condensed water flows into the atomizer chamber, and the condensed water in the atomizer chamber is atomized by the atomizer. The atomized condensed water enters the smoke passage and is discharged from the smoke exhaust port along with the smoke. In this way, the condensed water can be discharged without an external drain pipe, which can improve the installation convenience of the gas water heater. In addition, the appearance integrity of the whole machine can be improved without an external drain pipe, making the appearance quality of the whole machine better. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention 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 invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 A schematic structural diagram of an embodiment of a gas water heater provided by the present utility model;

[0025] Figure 2 for Figure 1 Schematic cross-section of a gas water heater;

[0026] Figure 3 This is a structural diagram of an embodiment of the condensation atomization device provided by the present utility model;

[0027] Figure 4 for Figure 3 Schematic diagram of the exploded structure of the condensation atomization device;

[0028] Figure 5 for Figure 3 Bottom view of the condensation atomization device;

[0029] Figure 6 for Figure 5 Schematic diagram of the cross section along line AA;

[0030] Figure 7 for Figure 5Schematic cross-section along line BB;

[0031] Figure 8 for Figure 5 Schematic cross-section along line CC;

[0032] Figure 9 for Figure 3 A schematic cross-sectional view of the middle shell;

[0033] Figure 10 for Figure 4 A schematic structural diagram of the second sub-shell;

[0034] Figure 11 for Figure 4 Schematic diagram of the structure of the condensing heat exchanger.

[0035] Description of Figure Numbers:

[0036] 100. Condensation atomization device; 10. Housing; 101. Smoke inlet; 102. Smoke exhaust outlet; 103. Water inlet interface; 104. Water outlet interface; 105. Smoke channel; 1051. Smoke inlet channel; 1052. Heat exchange channel; 1052a. First sub-channel; 1052b. Second sub-channel; 106. Atomization chamber; 107. Water storage chamber; 1071. First connecting port; 1072. Second connecting port; 108. Settling chamber; 109. Third connecting port; 1091. First half port; 1092. Second half port; 110. Sewage outlet; 111. First sub-housing; 1111. Second rib; 1112. Guide surface; 112. Second sub-housing; 1121. Guide cylinder; 1122. Partition; 1123. Fixing column; 113. Water inlet connector; 1131. Water inlet connection; 114. Water outlet connector; 1141. Water outlet connection; 115. Smoke exhaust pipe; 20. Condensing heat exchanger; 21. Heat exchange pipe; 211. Main heat exchange pipe section; 212. Connecting pipe section; 22. First connecting member; 23. Second connecting member; 30. Atomizer; 40. Sealing member; 50. Baffle; 51. First plate; 511. First rib; 52. Second plate; 521. Perforation; 60. Liquid level detection module; 61. Float; 62. Hall sensor; 70. Limiting member; 80. Antifreeze check valve; 90. Connecting frame;

[0037] 200. Gas water heater main body; 210. Fan; 220. Burner; 230. Main heat exchanger; 240. Smoke hood; 241. Smoke outlet pipe; 250. Combustion chamber body; 300. Piping system; 310. Water inlet pipe; 320. Water outlet pipe; 330. Water pipe; 340. Sewage pipe; 400. Casing.

[0038] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying 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. 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 the present invention.

[0042] In the context of energy conservation and emission reduction, improving the energy efficiency of gas-fired water heaters has become an industry trend. Traditional gas-fired water heaters generally achieve high energy efficiency by utilizing the latent heat of flue gas vaporization. However, this process produces a large amount of condensed water. Therefore, during installation, a longer external drain pipe is usually required to drain the condensed water into a sewer or sink, making gas-fired water heaters inconvenient to install and also affecting the appearance of the entire unit.

[0043] The utility model proposes a gas water heater, which can discharge the condensed water by atomizing the condensed water and discharging it with the flue gas, without the need for an external drain pipe. Since the installation step of the external drain pipe is omitted, the installation convenience of the gas water heater can be improved, and the absence of an external drain pipe makes the appearance integrity and quality of the entire machine better, thereby making the entire machine more beautiful.

[0044] See also Figures 1 to 6In one embodiment of the present invention, the gas water heater includes a condensation atomization device 100 and a gas water heater main body 200 . The gas water heater main body 200 includes a main heat exchanger 230; the condensation atomization device 100 includes a shell 10, a condensation heat exchanger 20 and an atomizer 30. The shell 10 is arranged on the gas water heater main body 200. The shell 10 has a smoke inlet 101, a smoke exhaust port 102, a smoke channel 105 and an atomization chamber 106. The smoke outlet side of the main heat exchanger 230 is connected to the smoke inlet 101, and the smoke inlet 101 and the atomization chamber 106 are respectively connected to the smoke exhaust port 102 via the smoke channel 105. The condensation heat exchanger 20 is arranged in the smoke channel 105, and the atomizer 30 is arranged in the shell 10. The atomization chamber 106 is used to collect condensed water generated by heat exchange of the condensation heat exchanger 20, and the atomizer 30 is used to atomize the condensed water in the atomization chamber 106.

[0045] Gas water heaters include, but are not limited to, gas water heaters and gas wall-mounted boilers. The gas water heater body 200 is the primary component for combustion and heat exchange. It includes a main heat exchanger 230. High-temperature flue gas generated by the operation of the gas water heater body 200 flows into the main heat exchanger 230 for heat exchange, thereby heating the water within the main heat exchanger 230. Typically, the gas water heater body 200 also includes components such as a fan 210 and a burner 220. The high-temperature flue gas generated by the burner 220 flows into the main heat exchanger 230 under the drive of the fan 210.

[0046] In practice, gas water heaters come in different models depending on the function of the fan 210 and the relative placement of the fan 210, burner 220, and main heat exchanger 230. For a forced-drum gas water heater, the air outlet of the fan 210 communicates with the burner 220, and the main heat exchanger 230 is located on the side of the burner 220 away from the fan 210. The fan 210 pumps air into the burner 220 to provide the secondary air required for combustion. Furthermore, the fan 210 drives the high-temperature flue gas generated by the burner 220 toward the main heat exchanger 230, achieving efficient heat exchange. For a forced-draft gas water heater, the air inlet of the fan 210 faces the main heat exchanger 230, and the burner 220 is arranged on the side of the main heat exchanger 230 away from the fan 210. The fan 210 drives the high-temperature flue gas generated by the burner 220 to flow toward the main heat exchanger 230, achieving efficient heat exchange. The flue gas after heat exchange enters the fan 210 and is then discharged through the air outlet of the fan 210. For a normal-fired gas water heater, the burner 220 is located at the bottom of the water heater body 10, and the flame generated by the burner 220 is upward, and the flue gas flows from bottom to top to the main heat exchanger 230. For a reverse-fired gas water heater, the burner 220 is located at the top of the water heater body 10, and the flame generated by the burner 220 is downward, and the flue gas flows from top to bottom to the main heat exchanger 230.

[0047] The following mainly takes a gas water heater as an example. In this embodiment, a strong-blast positive-firing condensing gas water heater is involved. The main body 200 of the gas water heater includes a fan 210, a burner 220 and a main heat exchanger 230 arranged from bottom to top. The high-temperature flue gas generated by the combustion of the burner 220 can flow from bottom to top to the main heat exchanger 230 under the drive of the fan 210 to heat the water inside the main heat exchanger 230 to achieve the hot water function. At the same time, the fan 210 can also blow air into the burner 220 to provide the burner 220 with secondary air supplement to ensure more complete combustion. The gas water heater main body 200 may further include a combustion chamber housing 250. The bottom of the combustion chamber housing 250 is provided with an air inlet connected to the air outlet of the fan 210. The burner 220 is disposed within the combustion chamber housing 250 near the air inlet. The main heat exchanger 230 is disposed at the top of the combustion chamber housing 250. The area within the combustion chamber housing 250 between the burner 220 and the main heat exchanger 230 forms a combustion chamber. In this way, the flame generated by the burner 220 can fully burn in the combustion chamber to produce high-temperature flue gas, which then flows upward along the combustion chamber to the main heat exchanger 230. Furthermore, the gas water heater main body 200 may further include a gas proportional valve connected to the gas inlet of the burner 220. The gas proportional valve controls the amount of gas supplied to the burner 220 to ensure more complete combustion of the burner 220.

[0048] To improve the energy efficiency of the gas water heater and simplify the discharge of condensed water, the gas water heater also includes a condensation atomization device 100. This device performs secondary heat exchange with the flue gas generated by the gas water heater body 200, fully utilizing the flue gas's latent heat. The condensed water generated after the heat exchange is atomized and discharged with the flue gas. The condensation atomization device 100 comprises a housing 10, a condensing heat exchanger 20, and an atomizer 30. The housing 10 can be located on the top or side of the gas water heater body 200, as long as the flue gas can enter the housing 10 after passing through the main heat exchanger 230. Alternatively, the housing 10 can be located on the top of the gas water heater body 200, with a smoke inlet 101 provided at the bottom of the housing 10. This allows the flue gas from the flue gas outlet of the main heat exchanger 230 to flow directly upward through the smoke inlet 101 into the housing 10, reducing smoke resistance. After heat exchange in the main heat exchanger 230, the flue gas enters the flue gas duct 105 and undergoes secondary heat exchange with the condensing heat exchanger 20 in the flue gas duct 105, fully utilizing the flue gas latent heat of the gas water heater. The flue gas continues to flow along the flue gas duct 105 until it is discharged from the smoke outlet 102. Optionally, the water outlet of the condensing heat exchanger 20 is connected to the water inlet of the main heat exchanger 230. This allows external cold water to enter the condensing heat exchanger 20 for preheating before being transferred to the main heat exchanger 230 for further heating, thereby improving the efficiency of hot water output. During the heat exchange process, condensed water is generated on the surface of the condensing heat exchanger 20. This condensed water flows into the atomizing chamber 106, where it is atomized by the atomizer 30. The atomized condensed water then enters the flue gas duct 105 and is discharged from the smoke outlet 102 along with the flue gas, thereby achieving condensed water discharge. Among them, there are many ways for the atomizer 30 to achieve condensed water atomization, including but not limited to ultrasonic atomization, jet atomization, vibrating sieve atomization and other methods to achieve atomization. Optionally, the atomizer 30 adopts an ultrasonic atomizer 30, which has high atomization efficiency, simple structure and small space occupation. For example, the atomizer 30 can be fixed to the bottom wall of the housing 10, and the bottom wall of the housing 10 is provided with a through hole connected to the atomization chamber 106. The atomizing end of the atomizer 30 is placed in the atomization chamber 106 via the through hole, so that it can directly contact the condensed water in the atomization chamber 106 for atomization.

[0049] The technical solution of the present invention is to provide a condensation atomization device 100 in the main body 200 of the gas water heater, wherein the main body 200 of the gas water heater includes a main heat exchanger 230, and the condensation atomization device 100 includes a shell 10, a condensation heat exchanger 20 and an atomizer 30. The shell 10 has a smoke inlet 101, a smoke exhaust port 102, a smoke channel 105 and an atomization chamber 106. The smoke outlet side of the main heat exchanger 230 is connected to the smoke inlet 101, and the smoke inlet 101 and the atomization chamber 106 are connected to the smoke exhaust port 102 via the smoke channel 105 respectively. The condensation heat exchanger 20 is arranged in the smoke channel 105. In this way, the high-temperature flue gas generated by the operation of the gas water heater main body 200 flows to the main heat exchanger 230 for a primary heat exchange. After the primary heat exchange, the flue gas can enter the flue gas channel 105 through the smoke inlet 101 and undergo a secondary heat exchange with the condensing heat exchanger 20, so that the latent heat of the flue gas is fully utilized. After the heat exchange, condensed water is generated on the surface of the condensing heat exchanger 20. The condensed water flows into the atomizing chamber 106. The condensed water in the atomizing chamber 106 is atomized by the atomizer 30. The atomized condensed water enters the flue gas channel 105 and is discharged from the exhaust port 102 along with the flue gas. In this way, the condensed water can be discharged without an external drain pipe, which can improve the installation convenience of the gas water heater. In addition, the absence of an external drain pipe can improve the appearance integrity of the entire device, making the appearance quality of the entire device better and making the entire device more beautiful.

[0050] In order to improve the efficiency of hot water output, Figures 1 to 3 As shown, in one embodiment, the gas water heater further includes a piping system 300, the piping system 300 including a water inlet pipe 310, a water outlet pipe 320 and a water supply pipe 330, the shell 10 has a water inlet joint 113 and a water outlet joint 114, the water inlet pipe 310 is connected to the water inlet end of the condensing heat exchanger 20 via the water inlet joint 113, the water outlet end of the condensing heat exchanger 20 is connected to one end of the water supply pipe 330 via the water outlet joint 114, the other end of the water supply pipe 330 is connected to the water inlet end of the main heat exchanger 230, and the water outlet end of the main heat exchanger 230 is connected to the water outlet pipe 320.

[0051] In this embodiment, cold water can enter the condensing heat exchanger 20 through the water inlet pipe 310 for preheating, and then be transported to the main heat exchanger 230 through the condensing heat exchanger 20 through the water supply pipe 330 for further heating. In this way, the inlet temperature of the water entering the main heat exchanger 230 is relatively high, and the water in the main heat exchanger 230 can be quickly heated to hot water at a preset temperature, and then the hot water in the main heat exchanger 230 can be transported to the water use end through the water outlet pipe 320. In this way, the hot water output efficiency can be effectively improved. In order to facilitate the connection between the condensing heat exchanger 20 and the water inlet pipe 310 and the water supply pipe 330, the shell 10 has a water inlet joint 113 and a water outlet joint 114, wherein the two ends of the water inlet joint 113 are respectively formed with a water inlet interface 103 and a water inlet connection part 1131, and the two ends of the water outlet joint 114 are respectively formed with a water outlet interface 104 and a water outlet connection part 1141. The water inlet interface 103 and the water outlet interface 104 are exposed to the shell 10 so as to be connected to the water inlet pipe 310 and the water supply pipe 330 respectively. The water inlet connection part 1131 and the water outlet connection part 1141 are placed in the flue gas channel 105, the water inlet end of the condensing heat exchanger 20 is connected to the water inlet connection part 1131, and the water outlet end of the condensing heat exchanger 20 is connected to the water outlet connection part 1141.

[0052] like Figure 1 As shown, in one embodiment, the gas water heater main body 200 has a first side wall and a second side wall opposite to each other along its width direction, the shell 10 is arranged at the top of the gas water heater main body 200, and the water inlet joint 113 and the water outlet joint 114 are arranged at the bottom of the shell 10. The portion of the shell 10 where the water inlet joint 113 and the water outlet joint 114 are provided protrudes toward a side away from the first side wall relative to the second side wall to form an installation space enclosed with the second side wall, and the piping system 300 is accommodated in the installation space.

[0053] In this embodiment, the housing 10 is located on top of the gas water heater body 200, meaning that the entire condensation atomization device 100 is placed on top of the gas water heater body 200. This allows full utilization of the space above the gas water heater body 200. Compared to placing the condensation atomization device 100 on the side of the gas water heater body 200, this reduces the space occupied by the width of the gas water heater, thereby reducing the width of the entire gas water heater. The portion of the housing 10 where the water inlet connector 113 and the water outlet connector 114 are located protrudes from the second sidewall toward the side away from the first sidewall. The area below this protrusion forms an installation space. By centrally arranging the gas water heater's piping system 300 within this installation space, the piping system 300 is facilitated to be integrated, resulting in a more regular layout and space conservation. Furthermore, the gas water heater's electrical control system may also be located within this installation space. Optionally, the water system and the electrical control system are separated by a partition to separate the water and electricity, ensuring the safety of the gas water heater.

[0054] like Figure 2 As shown, in one embodiment, the gas water heater main body 200 further includes a smoke hood 240, which is disposed on top of the main heat exchanger 230. The bottom of the smoke hood 240 is open toward the main heat exchanger 230. A smoke outlet is provided at the top of the smoke hood 240. The housing 10 is disposed on the top of the smoke hood 240. The smoke inlet 101 is disposed on the bottom wall of the housing 10 and communicates with the smoke outlet. In this embodiment, the smoke hood 240 can collect smoke from the smoke outlet side of the main heat exchanger 230 and then transport it into the housing 10 via the smoke outlet and the smoke inlet 101, thereby improving smoke transportation efficiency.

[0055] Please combine Figure 2 、 Figure 5 and Figure 9 In one embodiment, the housing 10 has a guide cylinder 1121 extending upward from the periphery of the smoke inlet 101, and the smoke hood 240 has a smoke outlet pipe 241 extending upward from the periphery of the smoke outlet. The smoke outlet pipe 241 is inserted into the guide cylinder 1121. In this embodiment, by inserting the smoke outlet pipe 241 of the smoke hood 240 into the guide cylinder 1121 of the housing 10, the installation of the housing 10 and the smoke hood 240 is facilitated, and the assembly of the housing 10 and the smoke hood 240 is made more stable and reliable, preventing the housing 10 from shaking under the impact of smoke. Furthermore, the smoke in the smoke hood 240 can be directly sent into the smoke channel 105 through the smoke outlet pipe 241, preventing smoke leakage.

[0056] like Figure 6As shown, in one embodiment, the shell 10 includes a first sub-shell 111 and a second sub-shell 112 that are detachably connected, the first sub-shell 111 is located above the second sub-shell 112, the first sub-shell 111 has an open end facing downward, and the second sub-shell 112 has an open end facing upward, the open end of the first sub-shell 111 is docked with the open end of the second sub-shell 112 and is sealed by a seal 40.

[0057] In this embodiment, the shell 10 is spliced ​​together by the first sub-shell 111 and the second sub-shell 112. During manufacturing, the first sub-shell 111 and the second sub-shell 112 can be separately molded and then assembled. In this way, it is easy to construct a relatively complex shape of the smoke channel 105 and the atomization chamber 106 in the shell 10. Among them, the first sub-shell 111 and the second sub-shell 112 include but are not limited to being connected and fixed by welding, fastener connection, riveting, etc. Optionally, the first sub-shell 111 and the second sub-shell 112 are detachably connected to facilitate cleaning and maintenance of the components in the shell 10 (such as the condensing heat exchanger 20). The first sub-shell 111 is located above the second sub-shell 112, that is, the top wall of the first sub-shell 111 constitutes the top wall of the shell 10, and the bottom wall of the second sub-shell 112 constitutes the bottom wall of the shell 10. Accordingly, the smoke inlet 101 can be provided on the bottom wall of the second sub-shell 112, and the smoke exhaust port 102 can be provided on the top wall of the first sub-shell 111. A seal 40 is provided between the first sub-housing 111 and the second sub-housing 112. This seal 40 seals the joint between the first sub-housing 111 and the second sub-housing 112 to prevent smoke from leaking from the connection between the first sub-housing 111 and the second sub-housing 112. The seal 40 may include, but is not limited to, sealant, a sealing ring, etc. Optionally, a sealing groove is provided at the open end of the second sub-housing 112, and the seal 40 is accommodated within the sealing groove.

[0058] like Figure 6 and Figure 9 As shown, in one embodiment, the flue gas channel 105 has a smoke inlet channel 1051 and a heat exchange channel 1052 arranged and connected in the transverse direction, the condensing heat exchanger 20 is arranged in the heat exchange channel 1052, the heat exchange channel 1052 includes a first sub-channel 1052a and a second sub-channel 1052b, the smoke inlet 101 is located at the bottom of the smoke inlet channel 1051, the smoke inlet channel 1051, the first sub-channel 1052a and the second sub-channel 1052b are arranged in sequence in the transverse direction and connected, and the atomization chamber 106, the second sub-channel 1052b and the smoke exhaust port 102 are arranged in sequence in the vertical direction and connected.

[0059] In this embodiment, the flue gas generated by the gas water heater body 200 flows upward through the smoke inlet 101 and into the smoke inlet channel 1051. It then changes direction, flowing horizontally from the first sub-channel 1052a to the second sub-channel 1052b, and then changes direction again, flowing upward to the smoke outlet 102. This allows the flue gas to reverse direction multiple times within the housing 10, which helps extend the flow distance and residence time of the flue gas within the housing 10, allowing the flue gas to fully exchange heat with the condensing heat exchanger 20 before being discharged, thereby improving heat exchange efficiency. At the same time, the condensed water in the atomizing chamber 106, after being atomized by the atomizer 30, can flow directly upward through the second sub-channel 1052b to the smoke outlet 102 for discharge. This shortens the flow path of the atomized condensed water and reduces its flow resistance, allowing the atomized condensed water to be quickly discharged along with the flue gas, preventing the atomized condensed water from re-liquefying due to an excessively long flow path or excessive resistance, thereby improving the discharge efficiency of the atomized condensed water. The horizontal direction may be the width direction of the gas water heater main body 200 (eg, the left-right direction), and the vertical direction may be the height direction of the gas water heater main body 200 (eg, the up-down direction).

[0060] like Figure 6 As shown, in one embodiment, the height of the smoke inlet channel 1051 is greater than the height of the first sub-channel 1052a. This provides the smoke inlet channel 1051 with sufficient height space, thereby reducing the resistance of smoke entering the smoke inlet channel 1051 from the smoke inlet 101, allowing smoke generated by the gas water heater main body 200 to enter the smoke inlet channel 1051 more smoothly. The relatively small height of the first sub-channel 1052a allows the smoke to be more concentrated within the first sub-channel 1052a, allowing for sufficient contact and heat exchange with the condensing heat exchanger 20 in the first sub-channel 1052a, thereby improving the smoke heat exchange efficiency.

[0061] Optionally, the shell 10 has a guide surface 1112 facing the smoke inlet 101, and the guide surface 1112 is tilted downward toward the side close to the first sub-channel 1052a. In this way, the smoke in the smoke inlet channel 1051 can be more smoothly guided to the first sub-channel 1052a through the guide surface 1112 for contact heat exchange with the condensing heat exchanger 20, avoiding the formation of a stepped structure between the smoke inlet channel 1051 and the first sub-heat exchange channel 1052 to block the smoke. In addition, the downward tilt of the guide surface 1112 is also conducive to guiding the smoke to the lower layer of the pipeline of the condensing heat exchanger 20, so that the upper and lower layers of the pipeline of the condensing heat exchanger 20 can fully contact the smoke for heat exchange, making the heat exchange of the condensing heat exchanger 20 more uniform at various parts in its height direction.

[0062] like Figure 6As shown, in one embodiment, the first sub-channel 1052a extends from the smoke inlet channel 1051 toward the second sub-channel 1052b and is inclined downward. That is, the first sub-channel 1052a is arranged at an angle, and the upward end of the first sub-channel 1052a is connected to the smoke inlet channel 1051, and the downward end of the first sub-channel 1052a is connected to the second sub-channel 1052b. In this way, on the one hand, it is beneficial for the flue gas entering the first sub-channel 1052a from the smoke inlet channel 1051 to have a downward flow tendency so as to fully contact and exchange heat with the lower layer of the condensing heat exchanger 20. On the other hand, it is also beneficial for the condensed water generated by the condensing heat exchanger 20 to drip onto the bottom wall of the first sub-channel 1052a and then flow downward along the slope of the bottom wall into the atomizing chamber 106.

[0063] like Figure 6 As shown, in one embodiment, the height of the second sub-channel 1052b is greater than the height of the first sub-channel 1052a. In this embodiment, the height of the first sub-channel 1052a is relatively small, so that the flue gas is more concentrated in the first sub-channel 1052a, thereby enabling sufficient contact and heat exchange with the condensing heat exchanger 20 in the first sub-channel 1052a, thereby improving the flue gas heat exchange efficiency; while the height of the second sub-channel 1052b is relatively high, and the atomization chamber 106 is located below the second sub-channel 1052b. This creates a larger atomization space above the atomization chamber 106, which is more conducive to improving the atomization effect and preventing the atomized condensed water from contacting the inner wall of the housing 10 in the narrow space and re-liquefying.

[0064] Optionally, the height of the smoke inlet channel 1051 and the height of the second sub-channel 1052b are both greater than the height of the first sub-channel 1052a, so that the smoke channel 105 as a whole presents a dumbbell-shaped flue structure with a low middle and high ends, which is beneficial to reducing the smoke inlet resistance and improving the heat exchange efficiency and atomization efficiency.

[0065] Please refer to Figure 7 、 Figure 9 and Figure 11 In one embodiment, the shell 10 has a water inlet joint 113 and a water outlet joint 114, and the condensing heat exchanger 20 includes a heat exchange tube 21, which includes a main heat exchange tube section 211 and connecting tube sections 212 respectively provided at both ends of the main heat exchange tube section 211. The main heat exchange tube section 211 is located in the first sub-channel 1052a, and the main heat exchange tube section 211 is configured as a tortuous serpentine pipeline structure. The two connecting tube sections 212 are located in the second sub-channel 1052b, one of the connecting tube sections 212 is detachably connected to the water inlet joint 113, and the other connecting tube section 212 is detachably connected to the water outlet joint 114.

[0066] In this embodiment, the main heat exchange pipe section 211, located within the first sub-channel 1052a, can first engage in heat exchange with the flue gas. The flue gas then enters the second sub-channel 1052b and exchanges heat with the connecting pipe section 212. The main heat exchange pipe section 211 has a tortuous, serpentine structure, which maximizes its length within a limited space, thereby increasing its contact area with the flue gas and improving heat exchange efficiency. Optionally, the main heat exchange pipe section 211 is constructed with at least two vertically arranged heat exchange layers. Each heat exchange layer includes multiple sub-heat exchange tubes spaced apart along the extension direction of the first sub-channel 1052a, with the sub-heat exchange tubes of adjacent heat exchange layers staggered. This further increases the contact area between the main heat exchange pipe section 211 and the flue gas, improving heat exchange efficiency. Furthermore, the sub-heat exchange tubes of adjacent heat exchange layers do not block each other, facilitating the smooth dripping of condensed water from the surface of the upper sub-heat exchange tube. Two connecting pipe sections 212 are located within the second sub-channel 1052b. One connecting pipe section 212 is detachably connected to the water inlet connector 113, and the other connecting pipe section 212 is detachably connected to the water outlet connector 114. This allows the entire condensing heat exchanger 20 to be removed from the housing 10, facilitating cleaning and maintenance of the condensing heat exchanger 20. The detachable connection between the connecting pipe section 212 and the water inlet connector 113 or the water outlet connector 114 may be achieved by, but is not limited to, threaded connection, fastener connection, snap-fit ​​connection, or the like.

[0067] like Figure 7 and Figure 11 As shown, optionally, the two ends of the water inlet joint 113 are respectively formed with a water inlet interface 103 and a water inlet connection portion 1131, and the two ends of the water outlet joint 114 are respectively formed with a water outlet interface 104 and a water outlet connection portion 1141. The condensing heat exchanger 20 further includes a first connecting member 22 and a second connecting member 23, wherein one connecting pipe section 212 is detachably connected to the water inlet connection portion 1131 via the first connecting member 22, and the other connecting pipe section 212 is detachably connected to the water outlet connection portion 1141 via the second connecting member 23. Optionally, the first connecting member 22 is sleeved around the outer periphery of the water inlet connection portion 1131 and is threadedly connected to the water inlet connection portion 1131, and the second connecting member 23 is sleeved around the outer periphery of the water outlet connection portion 1141 and is threadedly connected to the water outlet connection portion 1141. This can simplify the mounting structure of the condensing heat exchanger 20 and the housing 10, and facilitate the installation and removal of the condensing heat exchanger 20.

[0068] like Figure 11 As shown, in one embodiment, the heat exchange tube 21 is configured as a single tube wound integrally to form a bent pipe structure. This is beneficial for simplifying the structure of the condensing heat exchanger 20 and reducing the manufacturing cost of the condensing heat exchanger 20.

[0069] In one embodiment, at least a portion of the heat exchange tube 21 is constructed as a corrugated tube. The corrugations of the corrugated tube increase the contact area between the heat exchange tube 21 and the flue gas, improving heat exchange efficiency. Furthermore, compared to finned tubes, corrugated tubes offer a simpler structure and lower cost. They also prevent condensate from accumulating between adjacent fins and preventing it from dripping. Optionally, the entire heat exchange tube 21 is constructed as a corrugated tube.

[0070] like Figure 6 、 Figure 9 and Figure 10 As shown, in one embodiment, the housing 10 further has a water storage chamber 107, which is located below the flue gas passage 105. In this embodiment, the provision of the water storage chamber 107 can enhance the housing 10's ability to store condensed water. When the atomizer 30 is not able to process the generated condensed water in an abnormal operating condition or for extended periods of time, the excess condensed water can be stored in the water storage chamber 107, waiting for continued atomization to discharge the stored condensed water when the machine is powered on. This prevents excessive condensed water in the atomizer chamber 106 from flowing back into the gas water heater main body 200 along the flue gas passage 105 when the atomizer 30 has insufficient atomization capacity or malfunctions, thereby preventing the gas water heater main body 200 from being damaged.

[0071] Furthermore, in one embodiment, the atomization chamber 106 is located on a side of the water storage chamber 107 away from the smoke inlet 101, and a baffle 50 is provided between the smoke channel 105 and the water storage chamber 107. The baffle 50 is provided with a first communication port 1071 connecting the water storage chamber 107 with the smoke channel 105, and a second communication port 1072 communicating with the atomization chamber 106 is provided on the side of the water storage chamber 107.

[0072] In this embodiment, condensed water generated on the surface of the condensing heat exchanger 20 drips onto the baffle 50 under the action of gravity, then flows into the water storage chamber 107 through the first communication port 1071 of the baffle 50, and is then transported from the water storage chamber 107 to the atomization chamber 106 for atomization. Optionally, the smoke channel 105 includes a smoke inlet channel 1051, a first sub-channel 1052a, and a second sub-channel 1052b that are sequentially connected in a direction from the smoke inlet 101 to the smoke exhaust port 102. The water storage chamber 107 is located below the first sub-channel 1052a. The baffle 50 is disposed between the first sub-channel 1052a and the water storage chamber 107. The first communication port 1071 connects the water storage chamber 107 with the first sub-channel 1052a.

[0073] Optionally, the first communication port 1071 is in the shape of an elongated strip extending along the width direction of the baffle 50 , which can increase the opening area of ​​the first communication port 1071 as much as possible without destroying the structural strength of the baffle 50 , thereby improving the collection efficiency of condensed water.

[0074] Optionally, the shell 10 includes a first sub-shell 111 and a second sub-shell 112 spliced ​​together upper and lower, the first sub-shell 111 constructs a smoke inlet channel 1051, a first sub-channel 1052a and a second sub-channel 1052b, the second sub-shell 112 constructs a water storage chamber 107 and an atomization chamber 106, and the baffle 50 is arranged between the first sub-shell 111 and the second sub-shell 112.

[0075] like Figure 4 and Figure 6 As shown, in one embodiment, the baffle 50 includes a first plate 51 located between the first sub-channel 1052a and the water storage chamber 107. The first plate 51 is tilted downward toward the side close to the atomization chamber 106, and the first communication port 1071 is provided at a portion of the first plate 51 close to the atomization chamber 106. In this embodiment, by tilting the first plate 51 downward toward the side close to the atomization chamber 106, condensed water dripping from the condensing heat exchanger 20, after reaching the baffle 50, can flow downward along the slope of the first plate 51 to the first communication port 1071, and then enter the water storage chamber 107 through the first communication port 1071. In this way, the collection efficiency of condensed water can be improved.

[0076] like Figure 4 and Figure 9 As shown, in one embodiment, the baffle 50 further includes a second plate body 52, which is provided on a side of the first plate body 51 close to the smoke inlet channel 1051. The smoke inlet 101 is provided on the bottom wall of the housing 10. The housing 10 has a guide cylinder 1121 extending upward from the periphery of the smoke inlet 101, and the second plate body 52 is provided with a through-hole 521 for the guide cylinder 1121 to pass through. In this embodiment, the guide cylinder 1121 is inserted and matched with the baffle 50 via the through-hole 521, which can realize the rapid positioning and installation of the baffle 50 and improve the installation stability of the baffle 50. Optionally, the baffle 50 and the housing 10 are locked and fixed by fasteners. Optionally, the guide cylinder 1121 is integrally formed with the second sub-housing 112.

[0077] like Figure 7 and Figure 9As shown, in one embodiment, the baffle 50 is provided with an upwardly projecting first rib 511, with the bottom side of the condensing heat exchanger 20 abutting against the first rib 511. In this embodiment, the first rib 511 supports the bottom side of the condensing heat exchanger 20, creating a certain gap between the condensing heat exchanger 20 and other parts of the baffle 50. This allows sufficient contact and heat exchange between the flue gas and the bottom side of the condensing heat exchanger 20. This also facilitates condensed water on the bottom side of the condensing heat exchanger 20 to drip from the gap and flow along the baffle 50 into the water storage chamber 107. Furthermore, the first rib 511 also serves as a reinforcing rib, enhancing the structural strength of the baffle 50 and preventing deformation. Optionally, the first rib 511 extends along the length of the baffle 50, with multiple ribs spaced apart along the width of the baffle 50.

[0078] like Figure 7 and Figure 9 As shown, in one embodiment, the top wall of the first sub-channel 1052a is provided with a downwardly projecting second rib 1111, and the top side of the condensing heat exchanger 20 abuts against the second rib 1111. For example, if the first sub-channel 1052a is formed in the first sub-housing 111, the second rib 1111 is provided on the inner sidewall of the first sub-housing 111. In this embodiment, the second rib 1111 supports the top side of the condensing heat exchanger 20, creating a certain gap between the condensing heat exchanger 20 and other parts of the housing 10. This allows sufficient contact and heat exchange between the flue gas and the top side of the condensing heat exchanger 20 and also facilitates the dripping of condensed water from the top side of the condensing heat exchanger 20 from the gap. Furthermore, the second rib 1111 also serves as a reinforcement rib, enhancing the structural strength of the housing 10 and preventing deformation. Optionally, the second rib 1111 extends along the length of the housing 10, with multiple second ribs 1111 provided at intervals along the width of the housing 10.

[0079] like Figure 8 and Figure 10 As shown, in one embodiment, the shell 10 further has a sedimentation chamber 108, a third connecting port 109 and a drain port 110, the second connecting port 1072 is connected to the sedimentation chamber 108, the sedimentation chamber 108 is connected to the atomization chamber 106 through the third connecting port 109, the third connecting port 109 is connected to the drain port 110, the sedimentation chamber 108 is used to settle impurities in the condensed water transported by the water storage chamber 107, the gas water heater also includes a drain pipe 340, one end of the drain pipe 340 is connected to the drain port 110, and the other end is used to discharge sewage to the outside of the gas water heater.

[0080] In this embodiment, the condensed water on the surface of the condensing heat exchanger 20 drips into the water storage chamber 107 under the action of gravity. The condensed water in the water storage chamber 107 can enter the sedimentation chamber 108 through the second communication port 1072. The condensed water can be sedimented and filtered through the sedimentation chamber 108, so that the high-density particulate impurities in the condensed water are settled into the sedimentation chamber 108. The condensed water after sedimentation and filtration then enters the atomization chamber 106 through the third communication port 109 for atomization. In this way, the particulate matter in the atomization chamber 106 can be reduced, the atomizer 30 can be prevented from being clogged, the atomization effect can be ensured, and the service life of the atomizer 30 can be improved. For example, the second sub-housing 112 is constructed to form the water storage chamber 107, the sedimentation chamber 108, and the atomization chamber 106. The second communication port 1072 is provided on the side of the water storage chamber 107 close to the sedimentation chamber 108, and the bottom wall of the sedimentation chamber 108 is provided with a third communication port 109.

[0081] When there are too many particulate impurities in the sedimentation chamber 108 and it is blocked, it can be drained through the drain port 110 and the drain pipe 340 to remove the blockage, so as to ensure that the condensed water can smoothly enter the atomization chamber 106 for atomization and discharge, and to avoid excessive condensed water from flowing back into the gas water heater main body 200. In actual application, the outlet end of the drain pipe 340 (that is, the end away from the drain port 110) is connected to the bottom of the gas water heater, and the outlet end of the drain pipe 340 is provided with a blocking member or a switch valve. When normal condensation and atomization occur, the outlet end of the drain pipe 340 is blocked. At this time, the drain pipe 340 can also play a certain role in storing condensed water. When it is necessary to drain the sewage, the outlet end of the drain pipe 340 is opened for drainage.

[0082] like Figure 8 and Figure 10 As shown, optionally, the housing 10 has a partition 1122 that separates the sedimentation chamber 108 from the atomization chamber 106. The third communication opening 109 is located at the bottom of the partition 1122. The partition 1122 divides the third communication opening 109 into a first half opening 1091 and a second half opening 1092. The first half opening 1091 is connected to the sedimentation chamber 108, and the second half opening 1092 is connected to the atomization chamber 106. In this way, the condensed water that has settled in the sedimentation chamber 108 is output from the first half opening 1091 and then input into the atomization chamber 106 through the second half opening 1092.

[0083] like Figure 6As shown, in one embodiment, the condensation atomization device 100 further includes a liquid level detection module 60, and the liquid level detection module 60 and the atomizer 30 are electrically connected to the control system of the gas water heater. The liquid level detection module 60 is used to detect the liquid level in the atomization chamber 106, and the control system is used to control the atomizer 30 to start when the liquid level in the atomization chamber 106 is higher than a first preset liquid level. The control system is also used to send an alarm signal and shut down the gas water heater when the liquid level in the atomization chamber 106 is higher than a second preset liquid level, and the second preset liquid level is higher than the first preset liquid level.

[0084] In this embodiment, the liquid level in the atomizing chamber 106 can be detected by the liquid level detection module 60. When the liquid level in the atomizing chamber 106 is higher than the first preset liquid level, the control system controls the atomizer 30 to start, so as to atomize the condensed water in the atomizing chamber 106; when the liquid level in the atomizing chamber 106 is higher than the second preset liquid level, the control system sends an alarm signal and shuts down the gas water heater so that the condensing gas water heater no longer produces condensed water. In this way, the liquid level in the atomizing chamber 106 can be prevented from continuing to rise and backflowing into the combustion chamber of the gas water heater main body 200, so as to protect the entire machine. Among them, the liquid level detection module 60 can adopt contact liquid level detection (such as a pressure differential liquid level sensor, a float 61 type liquid level sensor, a capacitive liquid level sensor, etc.), or non-contact liquid level detection (such as an ultrasonic liquid level sensor, a laser liquid level sensor, etc.).

[0085] like Figure 6 As shown, in one embodiment, the liquid level detection module 60 includes a float 61 and a Hall sensor 62, a magnetic part is provided in the float 61, the bottom wall of the atomization chamber 106 is provided with a fixed column 1123 extending upward, and a limit member 70 is provided on the top of the fixed column 1123. The float 61 can be movably mounted on the fixed column 1123 up and down, and the Hall sensor 62 is provided at one end of the fixed column 1123 away from the limit member 70, and the Hall sensor 62 is electrically connected to the control system.

[0086] In this embodiment, a magnet is wrapped inside the float 61. The movement of the float 61 can drive the magnet to move relative to the Hall sensor 62 to generate a changing magnetic field. The Hall sensor 62 is electrically connected to the control system to send an induction signal to the control system, and then the control system controls the working state of the atomizer 30 or the gas water heater according to the induction signal. Among them, the first preset liquid level is the first sensing point, and the second preset liquid level is the second sensing point. When the liquid level in the atomization chamber 106 reaches above the first preset liquid level, the float 61 moves upward along the fixed column 1123 under the action of buoyancy and separates from the first sensing point. After the control system receives the signal of separation from the first sensing point, it controls the atomizer 30 to start, and the atomizer 30 atomizes the condensed water in the atomization chamber 106 and discharges it with the flue gas; when the liquid level in the atomization chamber 106 reaches the second preset liquid level, the float 61 also rises to the second sensing point under the action of buoyancy, and no longer rises under the limit of the limit member 70 (such as a limit plug). After the control system receives the signal from the second sensing point, in order to prevent the liquid level from continuing to rise and backflowing into the combustion chamber of the gas water heater main body 200, a high water level alarm signal is issued and the gas water heater is shut down to protect the entire machine.

[0087] In addition, the gas water heater further comprises a casing 400 ( Figure 1 and Figure 2 Only the bottom shell of the casing 400 is shown in the figure), the gas water heater main body 200 and the condensation atomization device 100 are both installed in the casing 400, and the bottom of the casing 400 may be provided with a water inlet connector for connecting to the water inlet pipe 310, a water outlet connector for connecting to the water outlet pipe 320, and an air inlet connector for connecting to the air inlet pipe.

[0088] like Figure 2 and Figure 9 As shown, optionally, the housing 10 of the condensation atomization device 100 further includes a smoke exhaust pipe 115, the bottom end of the smoke exhaust pipe 115 is connected to the smoke channel 105, the top end of the smoke exhaust pipe 115 is provided with the smoke exhaust port 102, and the end of the smoke exhaust pipe 115 provided with the smoke exhaust port 102 is passed outside the housing 400. Figure 4 As shown, an antifreeze check valve 80 is optionally provided in the exhaust pipe 115. Thus, when the gas water heater is not in use in winter, the exhaust pipe 115 is closed by the antifreeze check valve 80 to prevent cold air from flowing back into the machine and freezing the water in the pipe. Optionally, the condensation atomization device 100 further includes a connecting frame 90 provided on the housing 10. The connecting frame 90 is fixedly connected to the housing 400 to improve the installation stability of the condensation atomization device 100.

[0089] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A gas water heater, characterized in that: include: The main body of the gas water heater, including the main heat exchanger; and The condensation atomization device includes a shell, a condensation heat exchanger and an atomizer. The shell is arranged on the main body of the gas water heater. The shell has a smoke inlet, a smoke exhaust port, a smoke channel and an atomization chamber. The smoke outlet side of the main heat exchanger is connected to the smoke inlet, and the smoke inlet and the atomization chamber are respectively connected to the smoke exhaust port via the smoke channel. The condensation heat exchanger is arranged in the smoke channel, and the atomizer is arranged in the shell. The atomization chamber is used to collect condensed water generated by heat exchange of the condensation heat exchanger, and the atomizer is used to atomize the condensed water in the atomization chamber.

2. The gas water heater according to claim 1, characterized in that: The gas water heater also includes a piping system, which includes a water inlet pipe, a water outlet pipe and a water supply pipe. The shell has a water inlet joint and a water outlet joint. The water inlet pipe is connected to the water inlet end of the condensing heat exchanger via the water inlet joint. The water outlet end of the condensing heat exchanger is connected to one end of the water supply pipe via the water outlet joint. The other end of the water supply pipe is connected to the water inlet end of the main heat exchanger, and the water outlet end of the main heat exchanger is connected to the water outlet pipe.

3. The gas water heater according to claim 2, characterized in that: The gas water heater main body has a first side wall and a second side wall opposite to each other along its width direction. The shell is arranged on the top of the gas water heater main body, and the water inlet joint and the water outlet joint are arranged at the bottom of the shell. The part of the shell where the water inlet joint and the water outlet joint are provided protrudes toward the side away from the first side wall relative to the second side wall to form an installation space together with the second side wall, and the pipeline system is accommodated in the installation space.

4. The gas water heater according to claim 1, wherein: The main body of the gas water heater also includes a smoke collection hood, which is arranged on the top of the main heat exchanger. The bottom of the smoke collection hood is open toward the main heat exchanger. The top of the smoke collection hood is provided with a smoke outlet. The shell is arranged on the top of the smoke collection hood, and the smoke inlet is arranged on the bottom wall of the shell and is connected to the smoke outlet.

5. The gas water heater according to claim 4, characterized in that: The shell has a guide cylinder extending upward from the periphery of the smoke inlet, and the smoke collecting hood has a smoke outlet pipe extending upward from the periphery of the smoke outlet, and the smoke outlet pipe is inserted into the guide cylinder.

6. The gas water heater according to claim 1, characterized in that: The smoke channel has a smoke inlet channel and a heat exchange channel that are arranged and connected in the transverse direction. The condensing heat exchanger is arranged in the heat exchange channel. The heat exchange channel includes a first sub-channel and a second sub-channel. The smoke inlet is located at the bottom of the smoke inlet channel. The smoke inlet channel, the first sub-channel and the second sub-channel are arranged and connected in sequence in the transverse direction. The atomization chamber, the second sub-channel and the smoke exhaust port are arranged and connected in sequence in the vertical direction.

7. The gas water heater according to claim 6, characterized in that: The height of the smoke inlet channel is greater than that of the first sub-channel, the housing has a guide surface facing the smoke inlet, and the guide surface is tilted downward toward a side close to the first sub-channel; and / or The first sub-channel extends from the smoke inlet channel toward the second sub-channel and is inclined downward; And / or, the height of the second sub-channel is greater than the height of the first sub-channel.

8. The gas water heater according to claim 6, characterized in that: The shell has a water inlet joint and a water outlet joint, the condensing heat exchanger includes a heat exchange tube, the heat exchange tube includes a main heat exchange tube section, and connecting tube sections respectively arranged at both ends of the main heat exchange tube section, the main heat exchange tube section is located in the first sub-channel, the main heat exchange tube section is constructed into a tortuous serpentine pipeline structure, the two connecting tube sections are located in the second sub-channel, one of the connecting tube sections is detachably connected to the water inlet joint, and the other connecting tube section is detachably connected to the water outlet joint.

9. The gas water heater according to claim 1, characterized in that: The shell further comprises a water storage chamber, and the water storage chamber is located below the smoke channel.

10. The gas water heater according to claim 9, characterized in that: The atomization chamber is located on a side of the water storage chamber away from the smoke inlet, a baffle is provided between the smoke channel and the water storage chamber, the baffle is provided with a first communication port connecting the water storage chamber with the smoke channel, and a second communication port communicating with the atomization chamber is provided on the side of the water storage chamber.

11. The gas water heater according to claim 10, characterized in that: The shell also has a sedimentation chamber, a third connecting port and a drain port. The second connecting port is connected to the sedimentation chamber, and the sedimentation chamber is connected to the atomization chamber through the third connecting port. The third connecting port is connected to the drain port. The sedimentation chamber is used to settle impurities in the condensed water transported by the water storage chamber. The gas water heater also includes a drain pipe, one end of which is connected to the drain port, and the other end is used to discharge sewage to the outside of the gas water heater.

12. The gas water heater according to claim 1, wherein: The condensation atomization device also includes a liquid level detection module, which is electrically connected to the atomizer and the control system of the gas water heater. The liquid level detection module is used to detect the liquid level in the atomization chamber. The control system is used to control the atomizer to start when the liquid level in the atomization chamber is higher than a first preset liquid level. The control system is also used to send an alarm signal and shut down the gas water heater when the liquid level in the atomization chamber is higher than a second preset liquid level. The second preset liquid level is higher than the first preset liquid level.

13. The gas water heater according to claim 12, characterized in that: The liquid level detection module includes a float and a Hall sensor. A magnetic part is provided in the float. The bottom wall of the atomization chamber is provided with a fixed column extending upward. A limit piece is provided on the top of the fixed column. The float can be movably mounted on the fixed column up and down. The Hall sensor is provided at one end of the fixed column away from the limit piece. The Hall sensor is electrically connected to the control system.

14. The gas water heater according to any one of claims 1 to 13, characterized in that: The gas water heater body also includes a fan and a burner. The fan, the burner and the main heat exchanger are arranged from bottom to top. The fan is used to blow air into the burner and to drive the flue gas to flow from the burner toward the main heat exchanger.

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