Water heater

Abstract

The utility model discloses a water heater, and relates to the technical field of water heaters, the water heater comprises a water heater body, a heat exchanger, a water inlet pipe, a water outlet pipe and a water outlet pipe, the smoke exhaust device comprises a collecting cover arranged below the water heater body, a smoke exhaust pipe communicated with the collecting cover and an atomization module arranged on the collecting cover; the collecting cover is used for collecting smoke and condensate water generated in the running process of the water heater body, the atomizing module is used for atomizing the condensate water in the collecting cover, and the smoke exhaust pipe is used for exhausting the atomized condensate water along with the smoke. The gas proportional valve is arranged at the top of the combustor and used for controlling the gas inflow of the combustor; and the fan is arranged at the top of the combustor, and the fan is used for driving airflow to pass through the water heater body from top to bottom to flow to the smoke exhaust device. According to the technical scheme, condensate water can be drained without being externally connected with a drain pipe, the installation convenience of the water heater is improved, and meanwhile the overall layout compactness can be improved.

Description

Technical Field

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

[0002] In the context of energy conservation and emission reduction, improving the energy efficiency of water heaters has become a trend in the industry. Traditional water heaters generally achieve high energy efficiency by utilizing the latent heat of flue gas vaporization, but a large amount of condensed water will be generated in the process of utilizing the latent heat of flue gas vaporization. Therefore, during installation, it is usually necessary to connect a longer drainage pipe to drain the condensed water into the sewer or pool, making the water heater inconvenient to install, and the overall layout of the water heater is not compact enough, occupying a large space. Utility Model Content

[0003] The main purpose of the utility model is to provide a water heater, which aims to discharge condensed water without an external drain pipe, improve the installation convenience of the water heater, and at the same time improve the compactness of the overall layout.

[0004] To achieve the above-mentioned purpose, the water heater proposed by the utility model comprises:

[0005] The water heater body comprises a burner and a heat exchanger located below the burner;

[0006] The smoke exhaust device comprises a collecting hood arranged below the water heater body, a smoke exhaust pipe connected to the collecting hood, and an atomizing module arranged on the collecting hood; the collecting hood is used to collect smoke and condensed water generated during the operation of the water heater body, the atomizing module is used to atomize the condensed water in the collecting hood, and the smoke exhaust pipe is used to discharge the atomized condensed water along with the smoke;

[0007] A gas proportional valve is arranged at the top of the burner, and the gas proportional valve is used to control the air intake of the burner; and

[0008] A fan is arranged on the top of the burner, and is used to drive the air flow from top to bottom through the water heater body to flow to the smoke exhaust device.

[0009] In one embodiment, the smoke exhaust pipe and the water heater body are arranged side by side along the width direction of the water heater, the smoke exhaust pipe is extended vertically, the bottom end of the smoke exhaust pipe has a smoke inlet connected to the collection cover, and the top end of the smoke exhaust pipe has a smoke exhaust port connected to the smoke inlet.

[0010] In one embodiment, the collecting hood is provided with a collecting chamber and an atomizing chamber which are interconnected, the collecting chamber has a collecting port facing the water heater body, the atomizing chamber is located on a side of the collecting chamber close to the smoke exhaust pipe, the smoke inlet is connected to the atomizing chamber, and the atomizing module is arranged opposite to the smoke inlet.

[0011] In one embodiment, one end of the smoke exhaust pipe provided with the smoke inlet is expanded toward the atomization chamber.

[0012] In one embodiment, the gas proportional valve and the fan are arranged side by side along the width direction of the water heater, and the gas proportional valve is located between the fan and the smoke exhaust pipe.

[0013] In one embodiment, the water heater further includes a water inlet pipe, a water outlet pipe and an air inlet pipe, the water inlet pipe and the water outlet pipe are respectively connected to the heat exchanger, and the air inlet pipe is connected to the gas proportional valve; the water inlet pipe is arranged on a side of the water heater body away from the smoke exhaust pipe, and the air inlet pipe and the water outlet pipe are arranged on a side of the water heater body close to the smoke exhaust pipe.

[0014] In one embodiment, the heat exchanger has a water inlet port connected to the water inlet pipe, a water outlet port connected to the water outlet pipe, and a heat exchange channel connecting the water inlet port with the water outlet port; in the height direction of the water heater, the water inlet port is arranged lower than the water outlet port.

[0015] In one embodiment, the smoke exhaust device also includes a liquid level detection module, which is used to detect the liquid level in the collection cover; the atomization module is used to open when the liquid level in the collection cover reaches a first preset liquid level, and is used to close when the liquid level in the collection cover reaches a second preset liquid level; wherein the first preset liquid level is higher than the second preset liquid level, and the second preset liquid level is higher than the atomization module.

[0016] In one embodiment, the water heater also includes a shell, and the water heater body, the smoke exhaust device, the gas proportional valve and the fan are arranged in the shell. The smoke exhaust device also includes a connecting bracket arranged on the smoke exhaust pipe and / or the collection cover, and the connecting bracket is connected and fixed to the shell.

[0017] In one embodiment, the connecting bracket is detachably connected to the shell.

[0018] The technical solution of the utility model controls the intake amount of gas delivered to the burner through a gas proportional valve, so that the burner burns more evenly and fully. The fan drives the airflow from top to bottom through the water heater body to the smoke exhaust device, so that the high-temperature smoke generated by the burner combustion can flow from top to bottom to the heat exchanger for heat exchange, then enter the collection hood, and finally be discharged from the smoke exhaust pipe. The condensed water generated during the operation of the water heater body drips downward into the collection hood under the action of gravity and the purge of the airflow. The flow direction of the smoke is consistent with the dripping direction of the condensed water on the surface of the heat exchanger. The purge of the smoke can accelerate the dripping of the condensed water, avoiding a large amount of condensed water adhering to the surface of the heat exchanger to form a water film and affect the heat exchange efficiency. In this way, the heat exchange efficiency of the water heater can be improved. The atomization module can atomize the condensed water in the collection chamber, so that the atomized condensed water can be discharged from the smoke exhaust port along with the smoke. In this way, condensed water can be discharged without an external drain pipe, which can improve the installation convenience of the condensing gas water heater; and the gas proportional valve and the fan are both arranged on the top of the burner, which is conducive to simplifying the pipeline between the gas proportional valve and the burner, and makes full use of the space on the top of the burner, making the overall layout more compact, which is conducive to the miniaturization of the overall machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 A schematic structural diagram of an embodiment of a water heater provided by the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the medium water heater without the smoke exhaust device;

[0022] Figure 3 A schematic structural diagram of an embodiment of a smoke exhaust device provided by the utility model;

[0023] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of the smoke exhaust device.

[0024] Description of Figure Numbers:

[0025] 100, smoke exhaust device; 10, collecting cover; 11, cover body; 101, collecting chamber; 1011, collecting port; 1012, first connecting port; 1013, second connecting port; 102, purification chamber; 103, atomization chamber; 111, guide surface; 12, partition; 13, drain pipe; 131, drain port; 14, connecting part; 20, smoke exhaust pipe; 201, smoke exhaust port; 202, smoke exhaust channel; 203, smoke inlet; 21, introduction section; 22, smoke exhaust section; 30, atomization module; 31, atomization element; 32, base; 40, connecting bracket;

[0026] 200, water heater body; 210, burner; 220, combustion chamber box; 230, heat exchanger; 300, fan; 400, gas proportional valve; 500, shell; 600, water inlet pipe; 610, water inlet joint; 700, water outlet pipe; 710, water outlet joint; 800, air inlet pipe; 810, air inlet joint.

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), 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.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. 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 contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0031] In the context of energy conservation and emission reduction, improving the energy efficiency of water heaters has become a trend in the industry. Traditional water heaters generally achieve high energy efficiency by utilizing the latent heat of flue gas vaporization, but a large amount of condensed water will be generated in the process of utilizing the latent heat of flue gas vaporization. Therefore, during installation, it is usually necessary to connect a longer drainage pipe to drain the condensed water into the sewer or pool, making the water heater inconvenient to install, and the overall layout of the water heater is not compact enough, occupying a large space.

[0032] The utility model provides a water heater, which can atomize condensed water and discharge it with flue gas. The condensed water can be discharged without an external drain pipe, thereby improving the installation convenience of the water heater and improving the compactness of the overall layout.

[0033] See also Figure 1 In one embodiment of the utility model, the water heater includes a smoke exhaust device 100, a water heater body 200, a fan 300 and a gas proportional valve 400. The water heater body 200 includes a burner 210 and a heat exchanger 230 located below the burner 210; the smoke exhaust device 100 includes a collecting hood 10 arranged below the water heater body 200, a smoke exhaust pipe 20 connected to the collecting hood 10, and an atomizing module 30 arranged on the collecting hood 10; the collecting hood 10 is used to collect smoke and condensed water generated during the operation of the water heater body 200, the atomizing module 30 is used to atomize the condensed water in the collecting hood 10, and the smoke exhaust pipe 20 is used to discharge the atomized condensed water along with the smoke; the gas proportional valve 400 is arranged at the top of the burner 210, and the gas proportional valve 400 is used to control the air intake of the burner 210; the fan 300 is arranged at the top of the burner 210, and the fan 300 is used to drive the airflow from top to bottom through the water heater body 200 to flow to the smoke exhaust device 100.

[0034] In this embodiment, the water heater specifically relates to a strong drum type gas water heater with inverted combustion, wherein the water heater body 200 includes a burner 210 and a heat exchanger 230 located below the burner 210, and the high-temperature flue gas generated by the combustion of the burner 210 can flow from top to bottom to the heat exchanger 230 under the drive of the fan 300, so as to heat the water inside the heat exchanger 230 and realize the hot water function. In addition, the water heater body 200 may also include a combustion chamber box 220 arranged between the burner 210 and the heat exchanger 230, and a flue for flue gas to pass through is formed inside the combustion chamber box 220, so as to better guide the flue gas generated by the combustion of the burner 210 to the heat exchanger 230 for heat exchange. The fan 300 can also provide secondary air supplement for the burner 210. The gas proportional valve 400 is used to control the intake amount of the gas delivered to the burner 210, so that the burner 210 burns more fully. Condensed water will also be generated during the operation of the water heater body 200 (for example, condensed water will be generated on the surface of the heat exchanger 230 after heat exchange with the flue gas, or other parts of the water heater body 200 with lower temperatures will contact the flue gas to generate condensed water). The condensed water generated during the operation of the water heater body 200 can be atomized by the smoke exhaust device 100 and discharged together with the flue gas.

[0035] Please combine Figure 3 and Figure 4 , the smoke exhaust device 100 includes a collecting hood 10, a smoke exhaust pipe 20 and an atomizing module 30. Among them, the collecting hood 10 and the smoke exhaust pipe 20 can be an integrally formed structure, or a split structure can be used for assembly. In order to simplify the manufacturing process, optionally, the smoke exhaust pipe 20 and the collecting hood 10 are integrally formed. For example, the collecting hood 10 and the smoke exhaust pipe 20 can be integrally stretched and formed by sheet metal parts, or the collecting hood 10 and the smoke exhaust pipe 20 can be integrally injection molded by plastic parts. Of course, the collecting hood 10 and the smoke exhaust pipe 20 can also be separately set, and then assembled and connected by, for example, flanges, screws, buckles or other structures. In addition, the collecting hood 10 and the smoke exhaust pipe 20 can also be fixed by welding. No specific restrictions are made here. There are many ways for the atomizing module 30 to atomize the condensed water, including but not limited to the use of ultrasonic atomization, jet atomization, vibrating sieve atomization, etc. to atomize the condensed water in the atomizing chamber 103, which are not specifically limited here.

[0036] The technical solution of the utility model controls the intake amount of the gas delivered to the burner 210 through the gas proportional valve 400, so that the burner 210 burns more evenly and fully, and drives the airflow from top to bottom through the water heater body 200 to the smoke exhaust device 100 through the fan 300, so that the high-temperature smoke generated by the combustion of the burner 210 can flow from top to bottom to the heat exchanger 230 for heat exchange, and then enter the collection cover 10, and finally be discharged from the smoke exhaust pipe 20. The condensed water generated during the operation of the water heater body 200 drips downward into the collection cover 10 under the action of gravity and the purge of the airflow. The flow direction of the smoke is consistent with the dripping direction of the condensed water on the surface of the heat exchanger 230. The purge of the smoke can accelerate the dripping of the condensed water, and avoid a large amount of condensed water adhering to the surface of the heat exchanger 230 to form a water film and affect the heat exchange efficiency. In this way, the heat exchange efficiency of the water heater can be improved. The atomizing module 30 can atomize the condensed water in the collecting chamber 101, so that the atomized condensed water can be discharged from the smoke outlet 201 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 condensing gas water heater, and the appearance integrity of the whole machine can be improved without an external drain pipe, so that the appearance quality of the whole machine is better, and the whole machine is more beautiful.

[0037] In addition, in the related art, some strong drum type water heaters with combustion inversion systems usually set the fan 300 at the top of the burner 210, and set the gas proportional valve 400 at the bottom of the water heater body 200, so that a long pipeline needs to be connected between the gas proportional valve 400 and the burner 210, and the overall layout is not compact enough, making the overall volume larger. The technical solution of the utility model is conducive to simplifying the pipeline between the gas proportional valve 400 and the burner 210 by arranging both the gas proportional valve 400 and the fan 300 at the top of the burner 210, and the space at the top of the burner 210 can be fully utilized, making the overall layout more compact, which is conducive to miniaturization of the overall volume.

[0038] like Figure 1 As shown, in one embodiment, the smoke exhaust pipe 20 and the water heater body 200 are arranged side by side along the width direction of the water heater, and the smoke exhaust pipe 20 is extended vertically. The bottom end of the smoke exhaust pipe 20 has a smoke inlet 203 connected to the collecting hood 10, and the top end of the smoke exhaust pipe 20 has a smoke exhaust port 201 connected to the smoke inlet 203.

[0039] In this embodiment, the smoke exhaust pipe 20 extends vertically upward from the top of one side of the collecting hood 10, so that the collecting hood 10 and the smoke exhaust pipe 20 are integrally constructed to form an "L"-shaped structure. The collecting hood 10 is located at the bottom of the water heater body 200, and the smoke exhaust pipe 20 and the water heater body 200 are arranged side by side along the width direction of the water heater, and the overall arrangement is regular and the structure is compact. Taking the width direction of the water heater as the left and right direction as an example, the smoke exhaust pipe 20 can be located on the left or right side of the water heater body 200. After the smoke and condensed water generated during the operation of the water heater body 200 enter the collecting hood 10, the condensed water is atomized by the atomizing module 30 and can flow to the smoke exhaust pipe 20 with the smoke, and finally discharged from the smoke exhaust port 201 of the smoke exhaust pipe 20. The smoke exhaust pipe 20 is generally in the shape of a straight pipe extending vertically, which is conducive to reducing the flow resistance of the smoke and facilitating the smooth discharge of the smoke and condensed water.

[0040] Please combine Figure 1 and Figure 4 In one embodiment, the collecting hood 10 is provided with a collecting chamber 101 and an atomizing chamber 103 which are interconnected, the collecting chamber 101 has a collecting port 1011 facing the water heater body 200, the atomizing chamber 103 is located on a side of the collecting chamber 101 close to the smoke exhaust pipe 20, the smoke inlet 203 is connected to the atomizing chamber 103, and the atomizing module 30 is arranged opposite to the smoke inlet 203.

[0041] In this embodiment, the smoke and condensed water generated during the operation of the water heater body 200 enter the collection chamber 101 from the collection port 1011, and the smoke can flow to the exhaust channel 202 inside the exhaust pipe 20 through the atomization chamber 103, and finally be discharged from the exhaust port 201 of the exhaust pipe 20. The condensed water flows to the atomization chamber 103 through the collection chamber 101, and the condensed water in the atomization chamber 103 is atomized by the atomization module 30, so that the atomized condensed water can be transported to the exhaust port 201 through the exhaust channel 202 for discharge. The atomization module 30 is arranged opposite to the smoke inlet 203, so that the condensed water atomized by the atomization module 30 can enter the exhaust pipe 20 more smoothly with the smoke and be discharged from the exhaust port 201.

[0042] like Figure 4As shown, in one embodiment, the atomizing module 30 includes a base 32 and an atomizing element 31 mounted on the base 32, the bottom wall of the atomizing chamber 103 is provided with an installation port, the base 32 is fixed at the installation port, the base 32 is provided with a part of the atomizing element 31 extending from the installation port into the atomizing chamber 103, and the base 32 is sealed and connected to the periphery of the installation port, so as to avoid the condensed water in the atomizing chamber 103 from leaking out from the gap between the base 32 and the periphery of the installation port. For example, a sealant or a sealing ring may be provided between the base 32 and the periphery of the installation port to achieve a sealed connection. In order to facilitate the disassembly and maintenance of the atomizing module 30, optionally, the base 32 is detachably connected to the collection cover 10, including but not limited to realizing a detachable connection by means of snap-on connection, fastener connection, etc.

[0043] Among them, the number of atomization modules 30 can be set to one, two, three or more according to actual needs. In order to ensure the atomization effect, the total atomization capacity of all atomization modules 30 should generally be higher than the maximum condensed water generation in the whole machine working condition. Optionally, a plurality of atomization modules 30 are provided to improve the atomization efficiency. For example, in the present embodiment, two atomization modules 30 are provided. Among them, multiple atomization modules 30 can work synchronously according to actual needs, or they can work individually. For example, when there is less condensed water to be atomized, only part of the atomization modules 30 can be turned on for atomization. When there is a lot of condensed water to be atomized, multiple atomization modules 30 can be turned on and atomization can be performed simultaneously. The atomization module 30 can use an ultrasonic atomizer.

[0044] like Figure 4 As shown, in one embodiment, one end of the smoke exhaust pipe 20 provided with the smoke inlet 203 is expanded toward the atomization chamber 103. The expansion setting here can be a gradually expanding trumpet-shaped expansion or a sudden stepped expansion, so that the smoke inlet 203 of the smoke exhaust pipe 20 has a larger opening area. In this way, a larger space is formed at the part where the atomization chamber 103 and the smoke exhaust channel 202 are connected, which is conducive to increasing the atomization space and improving the atomization effect.

[0045] Please combine Figure 3 and Figure 4 In one embodiment, the smoke exhaust pipe 20 includes an introduction section 21 and a smoke exhaust section 22 which are interconnected. The introduction section 21 is arranged at the top of the collecting hood 10, and the smoke exhaust section 22 is extended upward from the top of the introduction section 21. The top of the smoke exhaust section 22 is provided with the smoke exhaust port 201, and the inner diameter of the introduction section 21 is gradually expanded toward the atomization chamber 103.

[0046] In this embodiment, the introduction section 21 is in the shape of a trumpet that gradually expands toward the atomization chamber 103, and the smoke exhaust section 22 is in the shape of a straight cylinder that extends vertically. The expanded end of the introduction section 21 is connected to the collection cover 10, and the smoke exhaust section 22 is connected to the narrow end of the introduction section 21. The inner diameter of the introduction section 21 is gradually expanded toward the atomization chamber 103, which is conducive to increasing the atomization space and guiding the smoke, so that the atomized condensed water can enter the smoke exhaust channel 202 of the smoke exhaust pipe 20 more smoothly along with the smoke.

[0047] Please refer to Figure 1 In one embodiment, the gas proportional valve 400 and the fan 300 are arranged side by side along the width direction of the water heater, and the gas proportional valve 400 is located between the fan 300 and the exhaust pipe 20. In this way, the space between the exhaust pipe 20 and the fan 300 can be fully utilized to install the gas proportional valve 400, making the overall structure more compact and the arrangement more regular.

[0048] Please combine Figure 1 and Figure 2 In one embodiment, the water heater further includes a water inlet pipe 600, a water outlet pipe 700 and an air inlet pipe 800, the water inlet pipe 600 and the water outlet pipe 700 are respectively connected to the heat exchanger 230, and the air inlet pipe 800 is connected to the gas proportional valve 400; the water inlet pipe 600 is arranged on a side of the water heater body 200 away from the smoke exhaust pipe 20, and the air inlet pipe 800 and the water outlet pipe 700 are arranged on a side of the water heater body 200 close to the smoke exhaust pipe 20.

[0049] Specifically, the water inlet pipe 600 and the water outlet pipe 700 are respectively extended downward from both sides of the heat exchanger 230, and the bottom end of the water inlet pipe 600 is provided with a water inlet joint 610, and the bottom end of the water outlet pipe 700 is provided with a water outlet joint 710. The external water system is connected to the water inlet pipe 600 via the water inlet joint 610, and the water outlet pipe 700 is connected to the external water end (such as a shower, a faucet, etc.) via the water outlet joint 710. When the water heater is working, the cold water in the external water system is transported to the heat exchange flow channel of the heat exchanger 230 by the water inlet pipe 600, and the water in the heat exchange flow channel is heated after heat exchange with the high-temperature flue gas, and the heated hot water is output to the water end through the water outlet pipe 700 to provide hot water for the user. The air inlet pipe 800 extends downward from the gas proportional valve 400, and an air inlet joint 810 is provided at the bottom of the air inlet pipe 800. The external gas pipeline is connected to the air inlet pipe 800 via the air inlet joint 810 to deliver gas to the gas proportional valve 400, and then delivered to the burner 210 by the gas proportional valve 400. The air inlet pipe 800, the water outlet pipe 700 and the smoke exhaust pipe 20 are all arranged on the same side of the water heater body 200, which can make full use of the space on the same side of the water heater body 200, making the overall structure more compact.

[0050] Furthermore, in one embodiment, the heat exchanger 230 has a water inlet port connected to the water inlet pipe 600, a water outlet port connected to the water outlet pipe 700, and a heat exchange channel connecting the water inlet port with the water outlet port; in the height direction of the water heater, the water inlet port is arranged lower than the water outlet port.

[0051] In this embodiment, a water inlet port and a water outlet port are respectively provided on opposite sides of the heat exchanger 230, and the heat exchanger 230 has a heat exchange flow channel connecting the water inlet port and the water outlet port. The cold water in the water inlet pipe 600 is transported from the water inlet port to the heat exchange flow channel of the heat exchanger 230 for heating, and the heated hot water is transported from the water outlet port to the water outlet pipe 700 for output. Since the water inlet port is arranged lower than the water outlet port, the water flows from bottom to top in the heat exchange flow channel of the heat exchanger 230, and the fan 300 drives the flue gas to flow from top to bottom, so that the water flow direction in the heat exchanger 230 is reverse to the flow direction of the flue gas, which is conducive to sufficient heat exchange between the flue gas and the water in the heat exchanger 230, thereby improving the heat exchange efficiency.

[0052] In one embodiment, the smoke exhaust device 100 also includes a liquid level detection module (not shown), which is used to detect the liquid level in the collection cover 10; the atomization module 30 is used to open when the liquid level in the collection cover 10 reaches a first preset liquid level, and is used to close when the liquid level in the collection cover 10 reaches a second preset liquid level; wherein the first preset liquid level is higher than the second preset liquid level, and the second preset liquid level is higher than the atomization module 30.

[0053] In this embodiment, the liquid level detection module and the atomization module 30 can be electrically connected to the controller of the water heater respectively. When the liquid level detection module detects that the liquid level in the collection cover 10 reaches the first preset liquid level, it sends a first signal to the controller. The controller controls the atomization module 30 to turn on according to the first signal, and then the condensed water in the collection cover 10 can be atomized by the atomization module 30, so that the atomized condensed water is discharged with the flue gas. In this way, the atomization function can be turned on in time when the condensed water level in the collection cover 10 is high, so as to avoid the liquid level being too high and affecting the normal discharge of flue gas. When the liquid level detection module detects that the liquid level in the collection cover 10 reaches the second preset liquid level, it sends a second signal to the controller. The controller controls the atomization module 30 to turn off according to the second signal and stop atomization. In this way, the atomization function can be turned off in time when the condensed water level in the collection cover 10 is low, thereby preventing the atomization module 30 from being damaged by dry burning. The liquid level detection module may be a contact type liquid level detection module (eg, a pressure differential liquid level sensor, a float type liquid level sensor, etc.) or a non-contact type liquid level detection module (eg, an ultrasonic liquid level sensor, a laser liquid level sensor, etc.).

[0054] Furthermore, in one embodiment, the liquid level detection module includes a first detection element disposed at the first preset liquid level, and a second detection element disposed at the second preset liquid level, wherein the first detection element is used to detect whether the liquid level in the collection hood 10 reaches the first preset liquid level, and the second detection element is used to detect whether the liquid level in the collection hood 10 reaches the second preset liquid level. Thus, when the first detection element detects that the liquid level in the collection hood 10 reaches the first preset liquid level, a first signal is sent to the controller, and the controller controls the atomization module 30 to turn on according to the first signal, and then the condensed water in the collection hood 10 can be atomized by the atomization module 30, so that the atomized condensed water is discharged with the flue gas. When the second detection element detects that the liquid level in the collection hood 10 reaches the second preset liquid level, a second signal is sent to the controller, and the controller controls the atomization module 30 to turn off according to the second signal to stop atomization. Among them, the first detection element and the second detection element can adopt contact liquid level sensors (such as differential pressure liquid level sensors, float liquid level sensors, etc.).

[0055] like Figure 4 As shown, in one embodiment, the collection cover 10 is also provided with a purification chamber 102 connected to the atomization chamber 103, and the purification chamber 102 is used to purify the condensed water and output it to the atomization chamber 103. Among them, there are many ways to purify the condensed water through the purification chamber 102. For example, the condensed water containing impurities is purified by natural precipitation in the purification chamber 102 and then output to the atomization chamber 103. For another example, a filter or adsorbent is provided in the purification chamber 102, which can filter or adsorb impurities in the condensed water, thereby purifying the condensed water. In this embodiment, the condensed water flows to the purification chamber 102 through the collection chamber 101, and the condensed water is purified by the purification chamber 102 and then output to the atomization chamber 103, and then the condensed water in the atomization chamber 103 is atomized by the atomization module 30, which can avoid the impurities in the condensed water from affecting the atomization module 30, improve the atomization effect, and also extend the service life of the atomization module 30.

[0056] Please refer to Figure 3 and Figure 4 In a specific embodiment, the collecting hood 10 includes a hood body 11 and a partition 12 arranged in the hood body 11, the hood body 11 is provided with the collecting chamber 101, the purification chamber 102 and the atomization chamber 103, the partition 12 separates the purification chamber 102 from the atomization chamber 103, and a connecting area connecting the purification chamber 102 with the atomization chamber 103 is formed at the bottom of the partition 12 in the hood body 11.

[0057] In the present embodiment, the top of the cover body 11 is open to form a collection port 1011, and a plurality of chambers such as a collection chamber 101, a purification chamber 102 and an atomization chamber 103 are constructed inside the cover body 11, wherein the purification chamber 102 and the atomization chamber 103 are placed on opposite sides of the partition 12. The cover body 11 and the partition 12 can be an integrally formed structure, or a split structure that is assembled and connected. A connecting area that connects the purification chamber 102 with the atomization chamber 103 is formed at the bottom of the partition 12 in the cover body 11, and the condensed water flows into the purification chamber 102 through the collection chamber 101, and the condensed water is naturally precipitated in the purification chamber 102 to precipitate the impurities in the condensed water. After precipitation and purification, the condensed water flows into the atomization chamber 103 through the connecting area for atomization, which can avoid the impurities in the condensed water from affecting the atomization module 30, improve the atomization effect, and also extend the service life of the atomization module 30. There are many ways to form the communication area. For example, the communication area can be a communication port opened in the partition 12. For another example, the communication area can be formed by the gap between the bottom side of the partition 12 and the bottom of the cover body 11.

[0058] Furthermore, if Figure 4 As shown, in one embodiment, the bottom wall of the cover body 11 is provided with a water outlet, and the collecting cover 10 also includes a drain pipe 13 extending downward from the periphery of the water outlet, and a drain outlet 131 is provided at the bottom end of the drain pipe 13, and the partition 12 extends from the middle of the water outlet into the drain pipe 13, and the connecting area is formed between the partition 12 and the drain outlet 131; a drain valve (not shown) is provided at the drain outlet 131.

[0059] In this embodiment, the partition 12 extends from the middle of the water outlet to the drain pipe 13, so that the first flow channel and the second flow channel are formed in the drain pipe 13 on opposite sides of the partition 12. The water outlet can be divided into two halves by the partition 12, one half of which connects the purification chamber 102 with the first flow channel, and the other half of the water outlet connects the atomization chamber 103 with the second flow channel. The interval between the partition 12 and the drain port 131 forms a connecting area, and the bottom end of the first flow channel is connected to the second flow channel through the connecting area. In this way, the purification chamber 102, the first flow channel, the connecting area, the second flow channel and the atomization chamber 103 are connected in sequence to form a U-shaped flow channel structure. The drain port 131 can be opened or closed by the drain valve. For example, when the smoke exhaust device 100 is applied to a water heater, when the water heater is working normally, the drain valve closes the drain port 131, and the condensed water in the collection chamber 101 first enters the purification chamber 102, so that the impurities in the condensed water are naturally precipitated in the purification chamber 102, and the purified condensed water flows into the atomization chamber 103 through the first flow channel, the connecting area, and the second flow channel, and then the condensed water in the atomization chamber 103 is atomized by the atomization module 30. When the water heater is not used for a long time, the drain port 131 can be opened through the drain valve to discharge the condensed water and impurities from the drain port 131.

[0060] Furthermore, if Figure 4 As shown, in one embodiment, the collecting chamber 101 and the purification chamber 102 are located on the same side of the atomization chamber 103 in the horizontal direction, the collecting chamber 101 is located above the purification chamber 102, the top of the collecting chamber 101 is provided with the collecting port 1011, the side wall of the collecting chamber 101 is provided with a first connecting port 1012 communicating with the atomization chamber 103, and the bottom wall of the collecting chamber 101 is provided with a second connecting port 1013 communicating with the purification chamber 102.

[0061] In this embodiment, the side wall of the collecting chamber 101 is provided with a first connecting port 1012, and the bottom wall of the collecting chamber 101 is provided with a second connecting port 1013, so that the position of the first connecting port 1012 is higher than that of the second connecting port 1013. In this way, the smoke entering the collecting chamber 101 can more easily enter the atomizing chamber 103 from the first connecting port 1012, and then be discharged from the smoke exhaust channel 202, so that the flow of smoke is smoother. The condensed water generated on the surface of the heat exchanger 230 drips into the collecting chamber 101 under the action of gravity, and can more easily be collected from the second connecting port 1013 to the purification chamber 102, and then flow into the atomizing chamber 103 for atomization after being purified by the purification chamber 102 for atomization.

[0062] Furthermore, if Figure 4As shown, a guide surface 111 is provided on the cavity wall of the collection cavity 101 opposite to the first communication port 1012, and the guide surface 111 extends from the collection port 1011 to the edge of the second communication port 1013, and is inclined toward a side close to the first communication port 1012. In this way, the condensed water in the collection cavity 101 can be guided to the purification cavity 102 more smoothly through the second communication port 1013 under the action of the guide surface 111, and the smoke can flow toward the first communication port 1012 under the guidance of the guide surface 111.

[0063] Optionally, a connection portion 14 is provided on the top of the collection cover 10. For example, a card slot adapted to the connection portion 14 is provided on the water heater body 200, and during assembly, the connection portion 14 is connected to the card slot to realize the rapid positioning connection of the collection cover 10 and the water heater body 200.

[0064] Based on the above embodiments, Figure 1 and Figure 3 As shown, in one embodiment, the water heater also includes a shell 500, the water heater body 200, the smoke exhaust device 100, the gas proportional valve 400 and the fan 300 are arranged in the shell 500, and the smoke exhaust device 100 also includes a connecting bracket 40 arranged on the smoke exhaust pipe 20 and / or the collection cover 10, and the connecting bracket 40 is connected and fixed to the shell 500.

[0065] In this embodiment, the shell 500 can play a role in safety protection for its internal components, and it is also convenient to install the water heater as a whole on a wall or other carrier. The smoke exhaust device 100 is connected and fixed to the shell 500 of the water heater through the connecting bracket 40 to ensure the installation stability of the smoke exhaust device 100. Specifically, the shell 500 may include a bottom shell and a cover arranged on the front side of the bottom shell, the bottom shell is used to be connected and fixed to the wall or other carrier, the water heater body 200 is fixed on the bottom shell, the smoke exhaust device 100 is connected and fixed to the bottom shell through the connecting bracket 40, the fan 300 and the gas proportional valve 400 are both installed on the top of the burner 210 and arranged close to the top wall of the bottom shell, and the smoke exhaust pipe 20 is arranged side by side on one side of the water heater body 200 and extends upward and passes through the top wall of the bottom shell.

[0066] In order to facilitate the maintenance and replacement of the smoke exhaust device 100, the connection bracket 40 is optionally detachably connected to the housing 500. The connection bracket 40 and the housing 500 are detachably connected by, but not limited to, fastener connection, snap connection, etc. Optionally, the connection bracket 40 is provided with a connection hole for fasteners to pass through, so that fasteners (such as screws, bolts, etc.) pass through the connection hole to connect and fix the connection bracket 40 to the housing 500, and the connection structure is simple, stable and reliable.

[0067] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A water heater, characterized in that: include: The water heater body comprises a burner and a heat exchanger located below the burner; A smoke exhaust device, comprising a collection hood disposed below the water heater body, a smoke exhaust pipe connected to the collection hood, and an atomization module disposed on the collection hood; The collecting hood is used to collect the smoke and condensed water generated during the operation of the water heater body, the atomizing module is used to atomize the condensed water in the collecting hood, and the smoke exhaust pipe is used to discharge the atomized condensed water along with the smoke; A gas proportional valve, disposed at the top of the burner, and used to control the air intake of the burner; as well as A fan is arranged on the top of the burner, and is used to drive the air flow from top to bottom through the water heater body to flow to the smoke exhaust device.

2. The water heater according to claim 1, characterized in that: The smoke exhaust pipe and the water heater body are arranged side by side along the width direction of the water heater, the smoke exhaust pipe is extended vertically, the bottom end of the smoke exhaust pipe has a smoke inlet connected to the collection cover, and the top end of the smoke exhaust pipe has a smoke exhaust port connected to the smoke inlet.

3. The water heater according to claim 2, characterized in that: The collecting hood is provided with a collecting chamber and an atomizing chamber which are interconnected. The collecting chamber has a collecting port facing the water heater body. The atomizing chamber is located on a side of the collecting chamber close to the smoke exhaust pipe. The smoke inlet is connected to the atomizing chamber. The atomizing module is arranged opposite to the smoke inlet.

4. The water heater according to claim 3, characterized in that: The end of the smoke exhaust pipe provided with the smoke inlet is expanded toward the atomization chamber.

5. The water heater according to claim 2, characterized in that: The gas proportional valve and the fan are arranged side by side along the width direction of the water heater, and the gas proportional valve is located between the fan and the smoke exhaust pipe.

6. The water heater according to claim 2, characterized in that: The water heater also includes a water inlet pipe, a water outlet pipe and an air inlet pipe, the water inlet pipe and the water outlet pipe are respectively connected to the heat exchanger, and the air inlet pipe is connected to the gas proportional valve; the water inlet pipe is arranged on a side of the water heater body away from the smoke exhaust pipe, and the air inlet pipe and the water outlet pipe are arranged on a side of the water heater body close to the smoke exhaust pipe.

7. The water heater according to claim 6, characterized in that The heat exchanger has a water inlet port connected to the water inlet pipe, a water outlet port connected to the water outlet pipe, and a heat exchange flow channel connecting the water inlet port with the water outlet port; in the height direction of the water heater, the water inlet port is arranged lower than the water outlet port.

8. The water heater according to claim 1, characterized in that The smoke exhaust device also includes a liquid level detection module, which is used to detect the liquid level in the collection cover; the atomization module is used to open when the liquid level in the collection cover reaches a first preset liquid level, and is used to close when the liquid level in the collection cover reaches a second preset liquid level; wherein the first preset liquid level is higher than the second preset liquid level, and the second preset liquid level is higher than the atomization module.

9. The water heater according to any one of claims 1 to 8, characterized in that: The water heater also includes a shell, the water heater body, the smoke exhaust device, the gas proportional valve and the fan are arranged in the shell, the smoke exhaust device also includes a connecting bracket arranged on the smoke exhaust pipe and / or the collection cover, and the connecting bracket is connected and fixed to the shell.

10. The water heater according to claim 9, characterized in that The connecting bracket is detachably connected to the shell.

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