Bottom-forced draft gas water heater

Abstract

Disclosed in the present invention is a bottom-forced draft gas water heater, comprising a housing, a condensing heat exchanger, a combustion chamber, a bottom-mounted forced draft fan, and an atomization device. A flue gas exhaust pipe is provided at the top of the housing; the condensing heat exchanger is provided with a flue gas inlet, a flue gas outlet, and a drainage hole; the combustion chamber is disposed in the housing and arranged below the condensing heat exchanger, and the flue gas inlet is in communication with the combustion chamber; the bottom-mounted forced draft fan is disposed in the housing and arranged below the combustion chamber, and an air outlet of the bottom-mounted forced draft fan is in communication with the combustion chamber; the atomization device comprises an atomization housing, a centrifugal rotating component, and a drive motor, wherein the atomization housing is further provided with a discharge port and an air inlet, the atomization housing is further provided with a water delivery pipe, the centrifugal rotating component is rotatably disposed in the atomization housing and arranged below a water outlet of the water delivery pipe, and the drive motor is drivingly connected to the centrifugal rotating component. The atomization effect of condensed water in the gas water heater is improved, and thus the use reliability of the gas water heater is improved.

Description

Down-draft gas water heater Technical Field

[0001] This invention belongs to the field of household appliance technology, and in particular relates to a bottom-drum type gas water heater. Background Technology

[0002] Water heaters are currently common household appliances. They are categorized into gas water heaters and electric water heaters, with gas water heaters being widely used due to their convenience. A typical gas water heater usually consists of a burner, a combustion chamber, and a heat exchanger. The burner burns gas in the combustion chamber to heat the water flowing through the heat exchanger.

[0003] Condensing gas water heaters with condensing function are widely used because they can recover and utilize the waste heat of flue gas, thereby reducing energy consumption. Condensing gas water heaters produce condensate during use, and this condensate is acidic. To solve the problem of condensate drainage, atomization is usually used to treat the condensate. For example, Chinese Patent Publication No. CN220287772U discloses a condensing gas water heater that uses an atomizing nozzle to spray the condensate into a mist. However, due to the large amount of impurities in the condensate, the atomizing nozzle can become clogged. Chinese Patent Publication No. CN 208735925U discloses a condensate atomizing discharge device and a condensing gas water heater. In this device, the condensate, under the action of rotating blades, is generated into ultra-fine droplets by the centrifugal force of a first-row fan, and then further atomized by a second-row fan, blows the condensate out. However, in actual use, the above solution involves condensate water impacting the first row of fans for atomization. In some cases, the condensate water is not impacted by the blades of the first row of fans and passes directly over the first row of fans through the space between two adjacent blades. This results in poor atomization of the condensate water and incomplete drainage, which reduces the reliability of the water heater. Technical issues

[0004] Therefore, the technical problem to be solved by this invention is how to design a technology to improve the atomization effect of condensate water in order to improve the reliability of water heater use. Technical solutions

[0005] This invention provides a bottom-drum type gas water heater that improves the atomization effect of condensate water inside the gas water heater to effectively atomize and process the condensate water, thereby improving the reliability of the gas water heater.

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

[0007] In one aspect, the present invention provides a down-draft gas water heater, comprising:

[0008] The outer casing has a smoke exhaust pipe at its top;

[0009] A condensing heat exchanger, wherein the condensing heat exchanger is provided with a flue gas inlet, a flue gas outlet and a drain hole, and the condensing heat exchanger is disposed in the outer shell;

[0010] A combustion chamber is disposed within the outer casing and arranged below the condenser heat exchanger, and the flue gas inlet communicates with the combustion chamber;

[0011] A lower blower is disposed in the housing and arranged below the combustion chamber, and the air outlet of the lower blower is connected to the combustion chamber.

[0012] An atomizing device includes an atomizing shell, a centrifugal rotating component, and a drive motor. The atomizing shell is also provided with an exhaust port and an air inlet, and a water supply pipe is also provided on the atomizing shell. The centrifugal rotating component is rotatably disposed in the atomizing shell and is arranged below the water outlet of the water supply pipe. The drive motor is drivenly connected to the centrifugal rotating component.

[0013] The atomizing housing is disposed in the outer casing, the air inlet is connected to the flue gas outlet, and the exhaust port is connected to the exhaust pipe;

[0014] In addition, the lower blower is configured to deliver air to the combustion chamber for combustion and to discharge the flue gas generated in the combustion chamber sequentially through the condenser heat exchanger, the atomizing shell and the exhaust pipe.

[0015] In one embodiment of this application, the flue gas outlet is arranged at the top of the condenser heat exchanger, and the air inlet is arranged at the bottom of the atomizing shell.

[0016] In one embodiment of this application, a water storage container and a water pump are also included;

[0017] The water storage container is connected to the drain hole, and the water storage container is connected to the water supply pipe through the water pump.

[0018] In one embodiment of this application, the water storage container is arranged below the drain hole;

[0019] The water pump is connected to the water supply pipe via a first flexible pipe, and the drain hole of the condenser heat exchanger is connected to the water storage container via a second flexible pipe.

[0020] In one embodiment of this application, a water return port is further provided at the bottom of the atomizing shell, and the water return port is connected to the water storage container; the water storage container is arranged below the water return port.

[0021] In one embodiment of this application, the water storage container is further provided with a partition, which extends vertically upward from the bottom surface of the water storage container and divides the interior of the water storage container into a water seal area and a water storage area. The water seal area and the water storage area are interconnected at the top of the partition.

[0022] The water storage container is also equipped with a drainage pipe, the lower end of which is located in the water seal area, and the drainage pipe is connected to the drain hole.

[0023] In one embodiment of this application, a water storage area is formed on the upper surface of the centrifugal rotating component, and the centrifugal rotating component is configured to rotate and throw out the condensate in the water storage area to form mist and discharge it from the exhaust port.

[0024] In one embodiment of this application, a recessed structure is formed on the upper surface of the centrifugal rotating component, the recessed structure forms the water storage area, and the recessed structure is located below the outlet of the water supply pipe.

[0025] In one embodiment of this application, the atomizing device further includes a collision component, which is located in the atomizing housing and distributed on the outside of the centrifugal rotating component;

[0026] The collision component is configured to collide with the condensate ejected by the centrifugal rotating component to generate mist.

[0027] In one embodiment of this application, the collision component has a ring structure and surrounds the periphery of the centrifugal rotating component. Beneficial effects

[0028] By incorporating a centrifugal rotating component within the atomizing housing, a water supply pipe on the housing delivers condensate from the condensing heat exchanger to this component. As the centrifugal rotating component rotates, driven by a motor, the condensate falling onto it rotates along with it. Under centrifugal force, the condensate is thrown out from the edge of the component. This effectively disperses the condensate and atomizes it upon impact with the atomizing housing, thus achieving atomization. Furthermore, under centrifugal force, all the condensate on the rotating component is centrifugally ejected, achieving comprehensive atomization and improving the atomization effect of the condensate in the gas water heater. This enhances the reliability of the gas water heater.

[0029] In addition, the use of a bottom-blowing fan for air supply provides sufficient space at the top of the casing for installing the atomizing housing, allowing the exhaust pipe to be centrally located for easier installation in the user's home. Attached Figure Description

[0030] Figure 1 is a schematic diagram of one embodiment of the heat exchanger of the present invention;

[0031] Figure 2 is a second schematic diagram of the structure of an embodiment of the heat exchanger of the present invention;

[0032] Figure 3 is a third structural schematic diagram of an embodiment of the heat exchanger of the present invention;

[0033] Figure 4 is one of the structural schematic diagrams of the atomizing device in Figure 1;

[0034] Figure 5 is a second schematic diagram of the atomizing device in Figure 1;

[0035] Figure 6 is a cross-sectional view along direction AA in Figure 5;

[0036] Figure 7 is a schematic diagram of the structure of the first shell in Figure 6;

[0037] Figure 8 is a schematic diagram of the centrifugal rotating component in Figure 6;

[0038] Figure 9 is a schematic diagram of the collision component in Figure 6;

[0039] Figure 10 is one of the structural schematic diagrams of the water storage container in Figure 1;

[0040] Figure 11 is a second schematic diagram of the structure of the water storage container in Figure 1;

[0041] Figure 12 is a cross-sectional view along direction BB in Figure 11;

[0042] Figure 13 is a cross-sectional view along the CC direction in Figure 11.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Water heater body; 11. Outer shell; 12. Combustion chamber; 13. Inlet pipe; 14. Outlet pipe; 15. Main heat exchanger; 16. Exhaust pipe; 17. Upper exhaust fan; 18. Lower blower;

[0045] 2. Condensing heat exchanger; 21. Drain hole; 22. Second flexible tube;

[0046] 3. Atomizing device; 31. Atomizing housing; 32. Centrifugal rotating component; 33. Drive motor; 34. Collision component; 35. First flexible tube;

[0047] 311. Exhaust port; 312. Water supply pipe; 313. Air inlet; 314. Water return port; 315. Annular enclosure; 316. Upper shell; 317. Lower shell; 341. Annular frame; 342. Impact plate;

[0048] 4. Water storage container; 41. Water pump; 42. Water level detection element; 43. Pumping pipe; 44. Baffle plate; 45. Drainage pipe; 46. First sewage pipe; 47. First cap; 48. Second sewage pipe; 49. Second cap. The best embodiment of the present invention

[0049] A gas water heater is a type of water heater that uses gas as its primary energy source. It produces hot water by transferring the high-temperature heat generated by the combustion of gas to cold water flowing through a heat exchanger.

[0050] Gas water heaters typically include an outer casing, as well as components such as a burner, heat exchanger, fan, and shroud housed within the casing.

[0051] In this process, the gas is delivered to the burner, where it is ignited by an ignition device, so that the burner can burn the delivered gas and generate heat.

[0052] The heat exchanger is equipped with heat exchange tubes. One end of the heat exchange tubes is connected to the water supply pipe, and the other end of the heat exchange tubes is connected to a shower head or faucet.

[0053] The heat generated by the burner burning the gas is used to heat the heat exchange tubes, thereby raising the temperature of the water inside the heat exchange tubes to form hot water.

[0054] When a gas water heater is working, cold water supplied by the water supply pipe flows into the heat exchange tube, and is then heated into hot water by the heat source generated by the burner. The hot water then flows out from the shower head or faucet through the hot water valve for the user's use.

[0055] At the same time, when the gas water heater is working, the fan is powered on and running simultaneously. Under the action of the fan, the flue gas generated by the burner is discharged outdoors.

[0056] As shown in Figure 1, one embodiment of this application provides a gas water heater, including a water heater body 1 and a condensing heat exchanger 2 disposed on the water heater body 1, wherein the condensing heat exchanger 2 is provided with a drain hole 21.

[0057] The water heater body 1 typically includes components such as an outer casing 11, a fan, and a combustion chamber 12. The outer casing 11 is equipped with an inlet pipe 13 and an outlet pipe 14. The combustion chamber 12 is equipped with a main heat exchanger 15, which is connected between the inlet pipe 13 and the outlet pipe 14. The water circuit of the condenser heat exchanger 2 is connected between the main heat exchanger 15 and the inlet pipe 13. The fan is mounted on the combustion chamber 12. The specific connection structure between the condenser heat exchanger 2 and the water heater body 1 is not limited here.

[0058] In addition, as shown in Figure 1, the fan can be an upper exhaust fan 17. In this case, the fan is set above the combustion chamber 12 and connected to the condenser heat exchanger 2.

[0059] Alternatively, as shown in Figure 3, the blower can be a bottom blower 18, in which case the blower is positioned above the combustion chamber 12 and connected to the condenser heat exchanger 2.

[0060] In one embodiment of this application, to improve the atomization effect of condensate water, as shown in Figures 4-9, the gas water heater further includes: an atomizing device 3, which includes an atomizing shell 31, a centrifugal rotating component 32, and a drive motor 33. The atomizing shell 31 is also provided with an exhaust port 311 and a water supply pipe 312. The centrifugal rotating component 32 is rotatably disposed within the atomizing shell 31 and is arranged below the outlet of the water supply pipe 312. The water supply pipe 312 is configured to transport the condensate water output from the drain hole 21 to the centrifugal rotating component 32. A water storage area 321 is formed on the upper surface of the centrifugal rotating component 32, and the centrifugal rotating component 32 is configured to rotate and throw out the condensate water in the water storage area to form mist and discharge it from the exhaust port 311. The drive motor 33 is connected to the centrifugal rotating component 32.

[0061] The atomizing housing 31 is disposed on the water heater body 1.

[0062] Specifically, during the operation of the gas water heater, the condensate generated by the condenser heat exchanger 2 is output to the outside through the drain hole 21, and the condensate flows to the centrifugal rotating component 32 through the water supply pipe 312. Under the driving action of the drive motor 33, the centrifugal rotating component 32 rotates, so that the condensate on it rotates together with the centrifugal rotating component 32.

[0063] As the condensed water rotates on the centrifugal rotating component 32, it is rapidly thrown outward from the edge of the component 32 under the action of centrifugal force. The thrown-out condensed water collides with the atomizing shell 31, thereby generating mist. Because the condensed water is rapidly thrown outward using centrifugal force, it can achieve a high speed by relying on the rapid rotation of the centrifugal rotating component 32, thus improving the atomization effect after impact.

[0064] More importantly, the condensate is thrown outward by centrifugal force, so there is no residue left in the centrifugal rotating part 32. This improves the atomization effect of the condensate, so as to fully and effectively atomize and discharge the condensate, and ultimately improve the usability of the water heater.

[0065] In one embodiment, in order to effectively store condensate and ensure that the condensate can rotate with the centrifugal rotating component 32 so as to use centrifugal force to drive the condensate to be thrown out quickly, a recessed structure is formed on the upper surface of the centrifugal rotating component 32, the recessed structure forms the water storage area, and the recessed structure is located below the outlet of the water supply pipe 312.

[0066] Specifically, by forming a recessed structure on the upper surface of the centrifugal rotating component 32, the recessed structure forms a water storage area. In this way, the condensate output from the water supply pipe 312 can be collected in the recessed structure, thereby prolonging the time that the condensate follows the centrifugal rotating component 32 in rotation. Under the action of centrifugal force for a long time, the condensate can be thrown out from the edge of the centrifugal rotating component 32 more quickly, thereby increasing the linear velocity of the condensate leaving the centrifugal rotating component 32, which is more conducive to improving the atomization effect.

[0067] In one embodiment, the recessed structures are symmetrically distributed around the rotation axis of the centrifugal rotating component 32 as a center line;

[0068] The outlet of the water supply pipe 312 is arranged close to the rotation axis of the centrifugal rotating component 32.

[0069] Specifically, in order to improve the uniformity of the centrifugal force applied to the condensate and thus enhance the atomization effect, the recessed structure can be a centrally symmetrical structure about the rotation axis of the centrifugal rotating component 32.

[0070] Because the recessed structure is centrally symmetrical, the condensate is more evenly distributed as it rotates within the recessed structure. This results in a more uniform distribution of the condensate ejected from the edge of the centrifugal rotating component 32. Consequently, the mist generated after the condensate impacts is also more uniform, facilitating the timely discharge of the mist from the exhaust port 311 to the outside of the atomizing housing 31.

[0071] In some embodiments, the recessed structure is funnel-shaped. Specifically, the water storage area formed by the funnel-shaped recessed structure can store a large amount of condensate, allowing the condensate to gradually diffuse and flow outward from the bottom.

[0072] In some embodiments, the surface of the recessed structure is provided with a multi-step surface. Specifically, the size of the multi-step surface gradually increases along the direction of outward flow of condensate. During the rotation of the centrifugal rotating component 32, the outward flow of condensate will impact the sidewalls of different step surfaces step by step, thereby achieving the effect of pre-atomizing the condensate.

[0073] In some embodiments, the vertical projection of the outlet of the water supply pipe 312 is close to the low water level position of the water storage area.

[0074] Specifically, in order to ensure that the condensate flowing onto the centrifugal rotating component 32 rotates sufficiently to generate a higher ejection speed using centrifugal force, the water output from the outlet of the water supply pipe 312 will fall to the low water level position in the storage area. In this way, the condensate can start rotating with the centrifugal rotating component 32 from a position close to the axis of the centrifugal rotating component 32, so as to make full use of the upper surface area of ​​the centrifugal rotating component 32 to obtain a sufficiently large ejection speed, thereby producing a better atomization effect after impact.

[0075] In one embodiment, the water pipe 312 extends into the groove formed by the recessed structure.

[0076] Specifically, to prevent condensate from splashing onto the outside of the centrifugal rotating component 32 due to excessive height difference, the water supply pipe 312 can be made to extend into the groove formed by the recessed structure.

[0077] In one embodiment, to more evenly deliver condensate to the centrifugal rotating component 32 and improve the uniformity of condensate distribution in the water storage area of ​​the centrifugal rotating component 32, multiple water supply pipes 312 can be provided on the atomizing housing 31. These water supply pipes 312 are distributed around the rotation axis of the centrifugal rotating component 32. Water is supplied to the water storage area through multiple water supply pipes 312 to improve the uniformity of condensate distribution.

[0078] Similarly, a water distributor can be installed at the outlet of the water supply pipe 312, and the water distributor is arranged on the centrifugal rotating component 32; the water distributor has a ring structure and is distributed around the rotation axis of the centrifugal rotating component 32. The water distributor can adopt the water distributor structure in the prior art, for example: the water distributor can be a ring pipe, and several water outlet holes are evenly distributed at the bottom of the ring pipe, so that the condensate can be discharged out through different water outlet holes to achieve the requirement of uniform distribution of condensate.

[0079] In another embodiment of this application, in order to further improve the atomization effect generated by the impact of condensate water, the atomizing device 3 further includes a collision component 34, which is located in the atomizing housing 31 and distributed on the outside of the centrifugal rotating component 32.

[0080] The collision component 34 is configured to collide with the condensate ejected by the centrifugal rotating component 32 to generate mist.

[0081] Specifically, the collision component 34 is disposed in the atomizing housing 31 and is arranged outside the centrifugal rotating component 32. In this way, after the condensed water is rotated and thrown out from the centrifugal rotating component 32, the condensed water will directly impact the collision component 34. By using the collision component 34, which is closer to the centrifugal rotating component 32, to impact the condensed water, the condensed water can impact the collision component 34 when it has not decelerated or has only decelerated slightly after being thrown out, so as to optimize the atomization effect of the impact.

[0082] In one embodiment, the collision component 34 has a ring-shaped structure and surrounds the periphery of the centrifugal rotating component 32.

[0083] Specifically, the collision component 34 has an overall ring structure and surrounds the centrifugal rotating component 32. The collision component 34 can collide with the condensed water thrown out from the centrifugal rotating component 32 to form mist.

[0084] In order for the condensed water to accurately impact the collision component 34 after being thrown out, the upper part of the collision component 34 needs to be higher than the upper edge of the centrifugal rotating component 32, while the lower part of the collision component 34 needs to be lower than the upper edge of the centrifugal rotating component 32.

[0085] The physical manifestation of the collision component 34 can have various structural forms, for example, the collision component 34 is an annular impact plate.

[0086] Alternatively, the collision component 34 may include an annular frame 341 and a plurality of impact plates 342, wherein the plurality of impact plates 342 are disposed on the annular frame 341 and a gap is formed between adjacent impact plates 342.

[0087] Specifically, the collision component 34 adopts the structure of an annular impact plate 342, which is installed in the atomizing housing 31 through an annular frame 341. At the same time, the impact plate 342 arranged on the annular frame 341 acts as the main component to collide with the condensate.

[0088] After the condensed water is thrown out from the centrifugal rotating component 32, it will collide with the corresponding impact plate 342 to form mist. The mist can be quickly discharged from the gap between the two impact plates 342, thereby ensuring that the mist generated by the collision can be smoothly discharged from the atomizing housing 31 to the outside through the exhaust port 311.

[0089] In one embodiment, in order to improve the ability of condensate to be fully dispersed and form mist during the collision process, the cross-sectional area of ​​the impact plate 342 increases from the center of the annular frame 341 outwards.

[0090] Specifically, as the condensate ejected from the edge of the centrifugal rotating component 32 moves toward the impact plate 342, the cross-sectional width of the impact plate 342 tends to increase outward. This increases the probability of the condensate colliding with the impact plate 342 during its movement, thus making full use of the impact plate 342 to atomize the condensate.

[0091] If some of the condensate does not collide with the impact plate 342, this portion of condensate will eventually collide with the atomizing shell 31 and eventually form mist.

[0092] The cross-section of the impact plate 342 can be triangular or trapezoidal.

[0093] In another embodiment of this application, an air inlet 313 is also provided on the atomizing housing 31;

[0094] The water heater body 1 is also provided with a flue pipe 16, and the atomizing shell 31 is connected between the flue pipe 16 and the flue gas outlet of the condensing heat exchanger 2.

[0095] The exhaust pipe 16 is connected to the exhaust port 311, and the air inlet 313 is connected to the flue gas outlet.

[0096] Specifically, in order to use the flue gas generated during the use of the gas water heater to carry the mist generated by the atomization of condensate water to the outside, the atomizing housing 31 can be connected between the flue pipe 16 and the flue gas inlet of the condensing heat exchanger 2.

[0097] During use, the flue gas generated by the combustion of the combustion gas in the combustion chamber 12 enters the condenser heat exchanger 2 for secondary heat exchange and then enters the atomizing shell 31 again. The mist generated by the impact of the condensate water in the atomizing shell 31 under centrifugal force will flow out along with the flue gas entering the atomizing shell 31 and finally be discharged to the outside through the exhaust pipe 16.

[0098] In this way, the flue gas generated by the gas water heater itself can be used to discharge the mist generated by the condensate in the atomizing device 3 along with the flue gas, so as to achieve automatic discharge of condensate.

[0099] In some embodiments, the atomizing device 3 can be arranged independently from the condenser heat exchanger 2 and the exhaust pipe 16. The air inlet 313 or the exhaust port 311 of the atomizing device 3 can be equipped with an independent exhaust fan, which independently discharges the mist generated by the condensate to the outside. For this purpose, two exhaust pipes 16 need to be configured on the outer casing 11, one of which is used for regular exhaust gas, and the other is used for discharging the mist generated by the condensate.

[0100] In other embodiments, the centrifugal rotating component 32 can be positioned directly above the air inlet 313 at the location of the atomizing housing 31; or, the centrifugal rotating component 32 can be positioned diagonally above the air inlet 313.

[0101] In some embodiments, an auxiliary fan (not shown) is provided at the bottom of the centrifugal rotating component 32. Specifically, since the centrifugal rotating component 32 rotates rapidly under the action of the drive motor 33, an auxiliary fan can be further added at the bottom of the centrifugal rotating component 32 with the help of the driving force of the drive motor 33. The auxiliary fan generates airflow to help the mist be discharged quickly and smoothly from the exhaust port 311.

[0102] Alternatively, the bottom of the centrifugal rotating component 32 may also be provided with an integral blade structure. Specifically, the bottom surface of the centrifugal rotating component 32 may form a corresponding blade structure, which is used to generate airflow to drive the mist to be quickly and smoothly discharged from the exhaust port 311. The specific blade shape design of the blade structure is only required to ensure that the mist can be output from the exhaust port 311, and can refer to the blade shape design with airflow driving in conventional technology, without limitation or elaboration here.

[0103] In another embodiment of this application, a water return port 314 is provided at the bottom of the atomizing housing 31, and the water return port 314 is configured to deliver the output water to the water supply pipe 312.

[0104] Specifically, during operation, after the condensate is ejected from the centrifugal rotating component 32, it collides with the collision component 34 inside the atomizing shell 31, forming mist. If some condensate does not completely form mist after the impact, it will fall to the bottom of the atomizing shell 31 under gravity. At this time, the condensate collected at the bottom of the atomizing shell 31 can be output again from the return port 314 and flow back into the water supply pipe 312, so that the un-atomized condensate flows back to the centrifugal rotating component 32. In this way, the condensate produced by the condensing heat exchanger 2 can be fully atomized and discharged to the maximum extent.

[0105] In order to allow the condensate flowing out of the return port 314 to flow back into the water supply pipe 312, a water pump 41 and other components can be used to transport the condensate flowing out of the return port 314 to the water supply pipe 312 for re-atomization treatment. No restrictions or details are provided here.

[0106] In one embodiment, to prevent unatomized condensate from entering the air inlet 313 at the bottom of the atomizing housing 31, an annular enclosure 315 can be provided inside the atomizing housing 31 around the air inlet 313, and the return water inlet 314 is arranged on the outside of the annular enclosure 315.

[0107] Specifically, if the condensate that is not atomized in the atomizing housing 31 accumulates at the bottom of the atomizing housing 31, it can be blocked by the annular enclosure 315 to prevent the condensate at the bottom of the atomizing housing 31 from flowing into the air inlet 313 and causing equipment failure.

[0108] In some embodiments, the atomizing housing 31 is a split structure, which includes an upper housing 316 and a lower housing 317. The upper housing 316 is provided with an exhaust port 311, and the lower housing 317 is provided with an air inlet 313, a water return port 314 and an annular barrier 315. The water supply pipe 312, the drive motor 33 and the collision component 34 can be arranged on the upper housing 316.

[0109] In some embodiments of this application, the atomizing device 3 further includes a water storage container 4 and a water pump 41. The water storage container 4 is connected to the return water port 314 and the drain hole 21 respectively, and the water storage container 4 is connected to the water supply pipe 312 through the water pump 41.

[0110] Specifically, after the condensate produced by the condenser heat exchanger 2 flows out of the drain hole 21, it can be temporarily stored in the water storage container 4. The condensate in the water storage container 4 is then pumped to the water supply pipe 312 by the water pump 41.

[0111] In one embodiment, the water storage container 4 is arranged below the drain hole 21.

[0112] Specifically, the condensate drained from the drain hole 21 will flow into the water storage container 4 under the action of gravity.

[0113] In one embodiment, the water storage container 4 is arranged below the condenser heat exchanger 2. Specifically, the water storage container 4 can make full use of the space below the condenser heat exchanger 2 to meet the installation requirements.

[0114] In one embodiment, a water return port 314 is also provided at the bottom of the atomizing housing 31, and the water return port 314 is connected to the water storage container 4; the water storage container 4 is arranged below the water return port 314.

[0115] Specifically, the condensate that is not completely atomized in the atomizing housing 31 can flow back into the water storage container 4 through the return port 314, and then be pumped back into the water supply pipe 312 by the water pump 41.

[0116] In some embodiments, in order to accurately control the start and stop of the water pump 41, a water level detection element 42 may be provided in the water storage container 4, the water level detection element 42 being configured to detect the water level in the water storage container 4.

[0117] Specifically, during use, the condenser heat exchanger 2 will only produce condensate after working for a certain period of time. Therefore, a certain amount of condensate needs to be collected in the water storage container 4 before the water pump 41 is started for atomization.

[0118] To address this, a water level detection element 42 is added to the water storage container 4. This element can detect the amount of condensate stored in the container. When the water level exceeds a preset low water level, the element will trigger the water pump 41 to start and pump the condensate to the centrifugal rotating component 32. Conversely, when the water level falls below the preset value, the water pump 41 will stop operating.

[0119] At the same time, when the water level in the water storage container 4 continues to rise and the water level exceeds the preset high water level value, the burner in the combustion chamber 12 will be triggered to stop working, and the fan, water pump 41 and drive motor 33 will continue to work to avoid the overflow of condensate water and cause equipment failure and damage.

[0120] In some embodiments, the physical manifestation of the water level detection element 42 can take various forms. For example, the water level detection element 42 may include multiple liquid level sensors, which are sequentially distributed along the height direction of the water storage container 4. Alternatively, the water level detection element 42 may be a float switch.

[0121] In one embodiment, the water pump 41 is detachably mounted on the water storage container 4.

[0122] Specifically, for convenient assembly of the water pump 41, it can be installed on the water storage container 4. The water pump 41 and the water storage container 4 are pre-assembled together to achieve a modular design. During the assembly of the entire unit, the water pump 41 can be fixedly installed in the burner body through the water storage container 4.

[0123] In some embodiments, the bottom of the water storage container 4 is provided with a water outlet, and the water pump 41 is connected to the water outlet.

[0124] Specifically, the water pump 41 is connected to the water outlet at the bottom of the water storage container 4, so that the condensate in the water storage container 4 can be pumped to the water supply pipe 312.

[0125] Alternatively, the water storage container 4 is provided with a water pumping pipe 43, the water suction hole of the water pumping pipe 43 is arranged at the bottom of the water storage container 4, and the water pump 41 is connected to the water pumping pipe 43.

[0126] A water pumping pipe 43 is inserted into the water storage container 4. The suction hole of the water pumping pipe 43 is located at the bottom of the water storage container 4. In this way, after the water pump 41 is started, the water pumping pipe 43 can draw condensate from the bottom of the water storage container 4.

[0127] In order to facilitate the connection between the water pump 41 and the water pipe 43, the outlet pipe 14 of the water pipe 43 is located outside the water storage container 4 and is connected to the water pump 41.

[0128] In some embodiments, in order to ensure that the water pumping pipe 43 can pump out the condensate in the water storage container 4 to the maximum extent, a first drain pipe 46 can also be provided at the bottom of the water storage container 4. The first drain pipe 46 extends downward and is also provided with a removable first cap 47. The water pumping pipe 43 extends into the first drain pipe 46.

[0129] Specifically, a first drain pipe 46 is installed at the bottom of the water storage container 4. During use, on the one hand, the pumping pipe 43 is inserted into the first drain pipe 46 to ensure that the pumping pipe 43 can pump out the condensate in the water storage container 4 to the maximum extent during the pumping process; on the other hand, by installing the first drain pipe 46 at the bottom of the water storage container 4, impurities trapped in the condensate are deposited in the first drain pipe 46. Then, by opening the first cap 47, the deposited impurities are discharged in time, so as to reduce the failure of the water pump 41 and the centrifugal rotating component 32 caused by the pumping pipe 43 sucking impurities.

[0130] In some embodiments, the water storage container 4 is further provided with a partition 44, which extends vertically upward from the bottom surface of the water storage container 4. The partition 44 divides the interior of the water storage container 4 into a water seal area and a water storage area. The water seal area and the water storage area are interconnected at the top of the partition 44. The water storage container 4 is also provided with a drain pipe 45, the lower end of which is located in the water seal area.

[0131] Specifically, since condensate is generated in the condenser heat exchanger 2, and flue gas is also transported in the space where condensate is generated in the condenser heat exchanger 2, in order to reduce the amount of flue gas entering the water storage container 4, a baffle 44 is added to the water storage container 4. The baffle 44 is used to divide the interior of the water storage container 4 into a water seal area and a water storage area. The condensate generated in the condenser heat exchanger 2 flows out from the drain hole 21 and then flows into the water seal area through the drain pipe 45.

[0132] The volume of the water seal zone is smaller than that of the water storage zone, allowing the condensate level to rise rapidly in the water storage zone and submerge the drain pipe 45. The condensate in the water seal zone then acts as a water seal for the drain pipe 45, preventing the flue gas from the condenser heat exchanger 2 from continuously entering the water storage container 4.

[0133] As the water level in the water seal zone continues to rise, the condensate will overflow from the water seal zone to the water storage zone. The water storage zone has a large volume, which can meet the water storage requirements of the condensate generated by the condenser heat exchanger 2.

[0134] Meanwhile, the water level detection element 42 is installed in the water storage area to detect the water level of the condensate in the water storage area.

[0135] Furthermore, the water pump 41 is connected to the water storage area and is configured to transport water from the water storage area to the water supply pipe 312.

[0136] In some embodiments, a gap is formed between the baffle 44 and the top surface of the water storage container 4 to allow condensate in the water seal zone to overflow smoothly into the water storage zone. Specifically, condensate in the water seal zone can overflow into the water storage zone through the gap formed between the baffle 44 and the top surface of the water storage container 4.

[0137] Alternatively, the partition 44 is disposed between the top and bottom surfaces of the water storage container 4, and the top of the partition 44 is provided with an overflow port. Specifically, the partition 44 is connected between the top and bottom surfaces of the water storage container 4, and the condensate in the water seal area can overflow into the water storage area through the overflow port on the partition 44.

[0138] In some embodiments, the first drain pipe 46 is located at the bottom of the water storage area and connects to the water storage area. To facilitate timely cleaning of the water seal area, a second drain pipe 48 can also be provided at the bottom of the water storage container 4. The second drain pipe 48 extends downwards and is equipped with a removable second cap 49. The second drain pipe 48 is located at the bottom of the water seal area and connects to the water seal area.

[0139] Specifically, the condensate water output from the drain hole 21 of the condenser heat exchanger 2 flows into the water seal zone through the guide pipe 45. The impurities contained in the condensate water in the water seal zone will be deposited at the bottom of the water seal zone. By opening the second cap 49, the impurities and dirt in the water seal zone can be discharged in time.

[0140] In addition, the baffle 44 separates the water seal area and the water storage area in the water storage container 4. The condensate flows into the water seal area first, which allows the impurities in the condensate to settle in the water seal area first, so as to reduce the impurities entering the water storage area, thereby reducing the impurity content sucked in by the pumping pipe 43 and improving the operational reliability of components such as the water pump 41.

[0141] In one embodiment of this application, as shown in FIG1, the water storage container 4 and the condensing heat exchanger 2 are independent of each other. The water storage container 4 will be installed in an empty area inside the water heater body 1. The water storage container 4 is usually arranged below the condensing heat exchanger 2 so that the condensate can flow to the bottom water storage container 4 by gravity.

[0142] The water pump 41 and the water delivery pipe 312 can be connected together by a first flexible pipe 35, and a first outer spring (not shown) is provided on the outside of the first flexible pipe 35.

[0143] Specifically, the use of the first flexible pipe 35 can satisfy the arrangement of the water path through which condensate flows in the limited space inside the water heater body 1. The first flexible pipe 35 can be bent inside the water heater body 1 to avoid other pipes or components inside the water heater body 1.

[0144] By providing a first outer spring on the outside of the first flexible tube 35, the first flexible tube 35 is protected by the first outer spring, thereby improving the reliability of use.

[0145] In addition, the drain hole 21 of the condenser heat exchanger 2 is connected to the water storage container 4 by a second flexible tube 22, and a second outer spring (not shown) is provided on the outside of the second flexible tube 22.

[0146] Specifically, the use of the second flexible pipe 22 can meet the requirement of arranging the water path through which condensate flows in the limited space inside the water heater body 1. The second flexible pipe 22 can be bent inside the water heater body 1 to avoid other pipes or components inside the water heater body 1.

[0147] By providing a second outer spring on the outside of the second flexible tube 22, the second flexible tube 22 is protected by the second outer spring, thereby improving the reliability of use.

[0148] In another embodiment of this application, the water storage container 4 may be integrated with the condenser heat exchanger 2, or the water storage container 4 may be integrated with the atomizing shell 31.

[0149] In one embodiment, as shown in FIG2, the water storage container 4 is integrated on the condenser heat exchanger 2, and the water storage container 4 is arranged in the lower part of the condenser heat exchanger 2.

[0150] Specifically, the water storage container 4 is integrated into the condenser heat exchanger 2, forming a modular structure between the water storage container 4 and the condenser heat exchanger 2. Meanwhile, the condenser heat exchanger 2 is located above the water storage container 4, allowing condensate to flow into the water storage container 4 by gravity.

[0151] The water storage container 4 can be directly fixed to the condenser heat exchanger 2 by screws; or the water storage container 4 can be fixed to the condenser heat exchanger 2 by clip-on.

[0152] Alternatively, the drain pipe 45 can be directly connected to the exhaust port of the condenser heat exchanger 2; or, the drain pipe 45 can be an integral part of the condenser heat exchanger 2.

[0153] In one embodiment, as shown in FIG3, the atomizing housing 31 is integrated on the condenser heat exchanger 2, and the atomizing housing 31 is arranged on the upper part of the condenser heat exchanger 2.

[0154] Specifically, the atomizing housing 31 can be integrated and installed on the condenser heat exchanger 2, so that the air inlet 313 of the atomizing housing 31 is directly connected to the flue gas outlet of the condenser heat exchanger 2.

[0155] In one embodiment, the water storage container 4 is integrated on the atomizing shell 31, and the water storage container 4 is arranged in the lower part of the atomizing shell 31.

[0156] Specifically, the water storage container 4 can also be integrated with the atomizing shell 31 to form a modular structure.

[0157] In some other embodiments of this application, the position of the atomizing device 3 is designed differently for different structural forms of gas water heaters.

[0158] In one embodiment, as shown in FIG1, the water heater body 1 includes an upper exhaust fan 17 and a combustion chamber 12. The upper exhaust fan 17 is arranged above the combustion chamber 12 and is connected between the combustion chamber 12 and the condensing heat exchanger 2.

[0159] Specifically, the gas water heater uses an upper exhaust fan 17, which is connected between the combustion chamber 12 and the condensing heat exchanger 2. Generally, the upper exhaust fan 17 is located above the combustion chamber 12, the condensing heat exchanger 2 is located to one side of the upper exhaust fan 17, the atomizing shell 31 is installed between the exhaust pipe 16 and the condensing heat exchanger 2, and the water storage container 4 is located at the bottom of the condensing heat exchanger 2.

[0160] In one embodiment, as shown in FIG3, the water heater body 1 includes a lower blower 18 and a combustion chamber 12. The lower blower 18 is arranged below the combustion chamber 12, and the combustion chamber 12 is connected between the lower blower 18 and the condenser heat exchanger 2.

[0161] Specifically, in a gas water heater employing a bottom blower 18, the combustion chamber 12 is connected to the condenser heat exchanger 2. Inside the outer casing 11, the atomizing device 3, the condenser heat exchanger 2, the combustion chamber 12, and the bottom blower 18 are arranged sequentially from top to bottom. The atomizing device 3 is connected between the condenser heat exchanger 2 and the flue pipe 16.

[0162] By incorporating a centrifugal rotating component within the atomizing housing, a water supply pipe on the housing delivers condensate from the condensing heat exchanger to this component. As the centrifugal rotating component rotates, driven by a motor, the condensate falling onto it rotates along with it. Under centrifugal force, the condensate is thrown out from the edge of the component. This effectively disperses the condensate and atomizes it upon impact with the atomizing housing, thus achieving atomization. Furthermore, under centrifugal force, all the condensate on the rotating component is centrifugally ejected, achieving comprehensive atomization and improving the atomization effect of the condensate in the gas water heater. This enhances the reliability of the gas water heater.

Claims

1. A bottom-drum type gas water heater, characterized in that, include: The outer casing has a smoke exhaust pipe at its top; A condensing heat exchanger, wherein the condensing heat exchanger is provided with a flue gas inlet, a flue gas outlet and a drain hole, and the condensing heat exchanger is disposed in the outer shell; A combustion chamber is disposed within the outer casing and arranged below the condenser heat exchanger, and the flue gas inlet communicates with the combustion chamber; A lower blower is disposed in the housing and arranged below the combustion chamber, and the air outlet of the lower blower is connected to the combustion chamber. An atomizing device includes an atomizing shell, a centrifugal rotating component, and a drive motor. The atomizing shell is also provided with an exhaust port and an air inlet. The atomizing shell is also provided with a water supply pipe. The centrifugal rotating component is rotatably disposed in the atomizing shell and is arranged below the water outlet of the water supply pipe. The drive motor is connected to the centrifugal rotating component in a driving connection. The atomizing housing is disposed in the outer casing, the air inlet is connected to the flue gas outlet, and the exhaust port is connected to the exhaust pipe; In addition, the lower blower is configured to deliver air to the combustion chamber for combustion and to discharge the flue gas generated in the combustion chamber sequentially through the condenser heat exchanger, the atomizing shell and the exhaust pipe.

2. The bottom-drum gas water heater according to claim 1, characterized in that, The flue gas outlet is located at the top of the condenser heat exchanger, and the air inlet is located at the bottom of the atomizing shell.

3. The bottom-drum gas water heater according to claim 1, characterized in that, It also includes water storage containers and water pumps; The water storage container is connected to the drain hole, and the water storage container is connected to the water supply pipe through the water pump.

4. The bottom-drum gas water heater according to claim 3, characterized in that, The water storage container is arranged below the drain hole; The water pump is connected to the water supply pipe via a first flexible pipe, and the drain hole of the condenser heat exchanger is connected to the water storage container via a second flexible pipe.

5. The bottom-drum gas water heater according to claim 3, characterized in that, The bottom of the atomizing housing is also provided with a water return port, which is connected to the water storage container; the water storage container is arranged below the water return port.

6. The bottom-drum gas water heater according to claim 3, characterized in that, The water storage container is also provided with a partition, which extends vertically upward from the bottom surface of the water storage container. The partition divides the interior of the water storage container into a water seal area and a water storage area, and the water seal area and the water storage area are interconnected at the top of the partition. The water storage container is also equipped with a drainage pipe, the lower end of which is located in the water seal area, and the drainage pipe is connected to the drain hole.

7. The bottom-drum gas water heater according to any one of claims 1-6, characterized in that, The upper surface of the centrifugal rotating component forms a water storage area, and the centrifugal rotating component is configured to rotate and throw out the condensate in the water storage area to form mist and discharge it from the exhaust port.

8. The bottom-drum gas water heater according to claim 7, characterized in that, The upper surface of the centrifugal rotating component has a recessed structure, which forms the water storage area. The recessed structure is located below the outlet of the water supply pipe.

9. The bottom-drum gas water heater according to claim 7, characterized in that, The atomizing device also includes a collision component, which is located in the atomizing housing and distributed on the outside of the centrifugal rotating component; The collision component is configured to collide with the condensate ejected by the centrifugal rotating component to generate mist.

10. The bottom-drum gas water heater according to claim 9, characterized in that, The collision component has a ring-shaped structure and surrounds the periphery of the centrifugal rotating component.

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