Smoke exhaust device and water heater
By designing a smoke exhaust device that increases the atomization space, the problem of unsatisfactory atomization of condensate water is solved, efficient discharge of flue gas and condensate water is achieved, and the energy efficiency of the water heater is improved.
Patent Information
- Application Number
- CN202420875127.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-24
AI Technical Summary
Traditional condensation gas water heaters generate a large amount of condensation water during the latent heat of flue gas vaporization, resulting in insufficient atomization space and unsatisfactory atomization effect, which affects smoke exhaust efficiency.
A smoke exhaust device is designed, including a collection cover, a smoke exhaust pipe and an atomization module. The collection chamber of the collection cover is connected to the atomization chamber. The smoke exhaust passage of the smoke exhaust pipe is arranged near one end of the atomization chamber to increase the fog. In the atomization space, the atomization module atomizes the condensed water in the atomization chamber to discharge it together with the flue gas.
It effectively improves the atomization effect of condensate water, realizes the simultaneous discharge of flue gas and condensate water, and improves the energy efficiency and smoke exhaust effect of the water heater.
Smart Images
Figure CN222230895U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water heaters, in particular to a smoke exhaust device and 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 condensing gas 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. In related technologies, some water heaters have atomization modules in their exhaust devices, which can atomize the condensed water and discharge it with the flue gas, but the atomization effect is usually not ideal due to insufficient atomization space. Utility Model Content
[0003] The main purpose of the utility model is to provide a smoke exhaust device and a water heater, which are designed to atomize condensed water and discharge it with smoke, and to improve the atomization effect of condensed water.
[0004] In order to achieve the above-mentioned purpose, the smoke exhaust device proposed by the utility model comprises:
[0005] A collecting hood, wherein the collecting hood is provided with a collecting chamber and an atomizing chamber which are interconnected, and the collecting chamber has a collecting port for introducing smoke and condensed water;
[0006] A smoke exhaust pipe, the smoke exhaust pipe is connected to the collecting hood, the smoke exhaust pipe is provided with a smoke exhaust port and a smoke exhaust channel connecting the smoke exhaust port with the atomizing chamber, and one end of the smoke exhaust channel close to the atomizing chamber is expanded toward the atomizing chamber; and
[0007] An atomization module is disposed on the collection cover and is used to atomize the condensed water in the atomization chamber.
[0008] In one embodiment, the smoke exhaust pipe includes an introduction section and a smoke exhaust section that are interconnected, the introduction section is arranged at the top of the collecting hood, the smoke exhaust section extends upward from the top of the introduction section, the smoke exhaust port is provided at the top of the smoke exhaust section, and the inner diameter of the introduction section is gradually expanded toward the atomization chamber.
[0009] In one embodiment, the height of the atomization chamber is not less than 80 mm.
[0010] In one embodiment, the atomization module includes an atomization element for atomizing condensed water, and the atomization element is disposed in the atomization chamber at a position opposite to the smoke exhaust channel.
[0011] In one embodiment, a plurality of atomization modules are provided.
[0012] In one embodiment, the smoke exhaust pipe and the collecting hood are integrally formed.
[0013] In one embodiment, the smoke exhaust device further comprises a connecting bracket provided on the smoke exhaust pipe and / or the collecting hood.
[0014] In one embodiment, the smoke exhaust device also includes a liquid level detection module, which is used to detect the liquid level in the atomization chamber; the atomization module is used to open when the liquid level in the atomization chamber reaches a first preset liquid level, and is used to close when the liquid level in the atomization chamber 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.
[0015] The utility model also proposes a water heater, comprising a water heater body and a smoke exhaust device, wherein a collecting port of the smoke exhaust device faces the water heater body, and smoke and condensed water generated by the operation of the water heater body flow to the smoke exhaust device through the collecting port.
[0016] In one embodiment, the water heater body includes a burner, a combustion chamber box and a heat exchanger arranged in sequence from top to bottom, the collection hood of the smoke exhaust device is located below the heat exchanger, and the collection port faces the heat exchanger. The water heater also includes a fan connected to the burner, and the fan is used to drive the airflow from top to bottom through the water heater body to flow to the smoke exhaust device.
[0017] The technical solution of the utility model introduces smoke and condensed water through the collecting port of the collecting hood, and the smoke can flow to the smoke exhaust channel through the collecting chamber and the atomizing chamber, and finally be discharged from the smoke exhaust port of the smoke exhaust channel; the condensed water flows to the atomizing chamber through the collecting chamber, and the condensed water in the atomizing chamber is atomized by the atomizing module, so that the atomized condensed water can be transported to the smoke exhaust port through the smoke exhaust channel for discharge; in this way, the functions of smoke exhaust and condensed water discharge can be realized at the same time; and the end of the smoke exhaust channel close to the atomizing chamber is expanded toward the atomizing chamber, so that a larger space is formed at the part where the atomizing chamber and the smoke exhaust channel are connected, which is conducive to increasing the atomization space and improving the atomization effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] 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.
[0019] Figure 1 A schematic structural diagram of an embodiment of a water heater provided by the utility model;
[0020] Figure 2 A schematic structural diagram of an embodiment of a smoke exhaust device provided by the utility model;
[0021] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the smoke exhaust device.
[0022] Description of Figure Numbers:
[0023] 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;
[0024] 200, water heater body; 210, burner; 220, combustion chamber box; 230, heat exchanger; 300, fan; 400, gas proportional valve; 500, shell.
[0025] 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
[0026] 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 in 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.
[0027] 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.
[0028] 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.
[0029] In the context of energy conservation and emission reduction, improving the energy efficiency of water heaters has become a trend in the industry. Traditional condensing gas 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. In related technologies, some water heaters have atomization modules in their exhaust devices, which can atomize the condensed water and discharge it with the flue gas, but the atomization effect is usually not ideal due to insufficient atomization space.
[0030] The utility model provides a smoke exhaust device 100, which can atomize condensed water and discharge it along with smoke, and can improve the atomization effect of condensed water.
[0031] See also Figure 2 and Figure 3 In one embodiment of the utility model, the smoke exhaust device 100 includes a collection hood 10, a smoke exhaust pipe 20 and an atomization module 30. The collection hood 10 is provided with a collection chamber 101 and an atomization chamber 103 which are interconnected, and the collection chamber 101 has a collection port 1011 for introducing smoke and condensed water; the smoke exhaust pipe 20 is connected to the collection hood 10, and the smoke exhaust pipe 20 is provided with a smoke exhaust port 201 and a smoke exhaust channel 202 which connects the smoke exhaust port 201 with the atomization chamber 103, and one end of the smoke exhaust channel 202 close to the atomization chamber 103 is expanded toward the atomization chamber 103; the atomization module 30 is provided in the collection hood 10, and the atomization module 30 is used to atomize the condensed water in the atomization chamber 103.
[0032] For ease of understanding, the smoke exhaust device 100 is used in a water heater as an example for explanation. Of course, the smoke exhaust device 100 can also be used in other equipment that needs to achieve smoke exhaust and water drainage at the same time. Figure 1The water heater may include a water heater body 200 and a smoke exhaust device 100, wherein a collecting port 1011 of the smoke exhaust device 100 faces the water heater body 200, and smoke and condensed water generated by the operation of the water heater body 200 flow to the smoke exhaust device 100 through the collecting port 1011. Specifically, the water heater body 200 may include a burner 210, a combustion chamber box 220, and a heat exchanger 230, wherein a flue connecting the burner 210 and the heat exchanger 230 is formed inside the combustion chamber box 220. When the water heater is working, driven by the fan 300, the high-temperature smoke generated by the combustion of the burner 210 is transported to the heat exchanger 230 through the flue inside the combustion chamber box 220, and the high-temperature smoke exchanges heat with the heat exchanger 230 to heat the water in the heat exchanger 230, and the smoke after heat exchange flows to the smoke exhaust device 100 through the collecting port 1011. At the same time, condensed water 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 produce condensed water when in contact with the flue gas) also flows to the smoke exhaust device 100 through the collection port 1011.
[0033] In this embodiment, the collection hood 10 introduces the smoke and condensed water generated during the operation of the water heater body 200 through the collection port 1011. The smoke can flow to the exhaust channel 202 through the collection chamber 101 and the atomization chamber 103, and finally be discharged from the exhaust port 201 of the exhaust channel 202. 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 exhaust channel 202 is close to the end of the atomization chamber 103 and is expanded toward the atomization chamber 103. The expansion setting here can be a gradually expanding trumpet expansion or a sudden step expansion, so that the smoke inlet 203 of the exhaust pipe 20 has a larger opening area. In this way, the part where the atomization chamber 103 and the exhaust channel 202 are connected forms a larger space, which is conducive to increasing the atomization space and improving the atomization effect. 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, snaps 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 atomization 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 atomization chamber 103, which are not specifically limited here.
[0034] The technical solution of the present invention introduces smoke and condensed water through the collecting port 1011 of the collecting hood 10, and the smoke can flow to the smoke exhaust channel 202 through the collecting chamber 101 and the atomizing chamber 103, and finally be discharged from the smoke exhaust port 201 of the smoke exhaust channel 202; the condensed water flows to the atomizing chamber 103 through the collecting chamber 101, and the condensed water in the atomizing chamber 103 is atomized by the atomizing module 30, so that the atomized condensed water can be transported to the smoke exhaust port 201 through the smoke exhaust channel 202 for discharge; in this way, the functions of smoke exhaust and condensed water exhaust can be realized at the same time; and the end of the smoke exhaust channel 202 close to the atomizing chamber 103 is expanded toward the atomizing chamber 103, so that a larger space is formed at the part where the atomizing chamber 103 and the smoke exhaust channel 202 are connected, which is conducive to increasing the atomization space and improving the atomization effect.
[0035] like Figure 3 As shown, 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, 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.
[0036] 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 more smoothly along with the smoke.
[0037] In order to further improve the atomization space and atomization effect, optionally, the height of the atomization chamber 103 is not less than 80 mm. The height of the atomization chamber 103 specifically refers to the distance between the inner side of the bottom wall of the atomization chamber 103 and the plane where the smoke inlet 203 of the smoke exhaust channel 202 is located.
[0038] like Figure 3 As shown, in one embodiment, the atomization module 30 includes an atomization element 31 for atomizing condensed water, and the atomization element 31 is disposed in the atomization chamber 103 at a position opposite to the smoke exhaust channel 202 .
[0039] In the present embodiment, the atomizer 31 is arranged in the atomizer chamber 103 at a position opposite to the smoke exhaust channel 202, so that the condensed water atomized by the atomizer 31 can enter the smoke exhaust channel 202 more smoothly with the smoke and then be discharged. Specifically, the atomizer module 30 includes a base 32 and an atomizer 31 installed on the base 32, the bottom wall of the atomizer chamber 103 is provided with a mounting port, the base 32 is fixed at the mounting port, the base 32 is provided with a part of the atomizer 31 extending from the mounting port into the atomizer chamber 103, and the base 32 is sealed and connected to the periphery of the mounting port, so as to avoid the condensed water in the atomizer chamber 103 from the gap between the base 32 and the periphery of the mounting port. For example, a sealant or a sealing ring can be provided between the base 32 and the periphery of the mounting port to achieve a sealed connection. In order to facilitate the disassembly and maintenance of the atomizer module 30, optionally, the base 32 is detachably connected to the collection cover 10, including but not limited to the use of snap-on connection, fastener connection and other methods to achieve detachable connection.
[0040] 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 work. When there is a lot of condensed water to be atomized, multiple atomization modules 30 can be turned on and atomization work can be performed simultaneously.
[0041] like Figure 2 As shown, in one embodiment, the smoke exhaust device 100 further includes a connecting bracket 40 disposed on the smoke exhaust pipe 20 and / or the collecting cover 10. The connecting bracket 40 facilitates the installation of the smoke exhaust device 100 on a carrier. Figure 1 As shown, when the smoke exhaust device 100 is applied to a water heater, the smoke exhaust device 100 is disposed in a housing 500 of the water heater and is connected and fixed to the housing 500 of the water heater through a connecting bracket 40 to ensure the installation stability of the smoke exhaust device 100. Optionally, the connecting bracket 40 is provided with a connecting hole for fasteners to pass through, so that fasteners (such as screws, bolts, etc.) pass through the connecting hole to connect and fix the connecting bracket 40 to the housing 500.
[0042] like Figure 3As 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.
[0043] like Figure 3 As shown, in one 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.
[0044] 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.
[0045] Furthermore, if Figure 3As 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 is provided at the drain outlet 131.
[0046] 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.
[0047] Furthermore, if Figure 3 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.
[0048] 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.
[0049] Furthermore, 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 the 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.
[0050] 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.
[0051] On the basis of the above embodiments, in one embodiment, the smoke exhaust device 100 also includes a liquid level detection module, which is used to detect the liquid level in the atomization chamber 103; the atomization module 30 is used to open when the liquid level in the atomization chamber 103 reaches a first preset liquid level, and is used to close when the liquid level in the atomization chamber 103 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.
[0052] 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 atomization chamber 103 reaches the first preset liquid level, a first signal is sent to the controller. The controller controls the atomization module 30 to open according to the first signal, and then the condensed water in the atomization chamber 103 can be atomized through 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 atomization chamber 103 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 atomization chamber 103 reaches the second preset liquid level, a second signal is sent to the controller, and the controller controls the atomization module 30 to close and stop atomization according to the second signal. In this way, the atomization function can be turned off in time when the condensed water level in the atomization chamber 103 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.).
[0053] 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 atomization chamber 103 reaches the first preset liquid level, and the second detection element is used to detect whether the liquid level in the atomization chamber 103 reaches the second preset liquid level. In this way, when the first detection element detects that the liquid level in the atomization chamber 103 reaches the first preset liquid level, a first signal is sent to the controller, and the controller controls the atomization module 30 to open according to the first signal, and then the condensed water in the atomization chamber 103 can be atomized through the atomization module 30, so that the atomized condensed water is discharged with the smoke. When the second detection element detects that the liquid level in the atomization chamber 103 reaches the second preset liquid level, a second signal is sent to the controller, and the controller controls the atomization module 30 to close 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.).
[0054] like Figure 1As shown, the utility model also proposes a water heater, including a water heater body 200 and a smoke exhaust device 100, wherein the collecting port 1011 of the smoke exhaust device 100 faces the water heater body 200, and the smoke and condensed water generated by the operation of the water heater body 200 flow to the smoke exhaust device 100 via the collecting port 1011. The specific structure of the smoke exhaust device 100 refers to the above-mentioned embodiment. Since the water heater adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here. Among them, the water heater specifically relates to a gas water heater, which can be a strong-drawing gas water heater or a strong-drum gas water heater. In the following, the strong-drum gas water heater is mainly used as an example for explanation.
[0055] Please refer to Figure 1 In one embodiment, the water heater body 200 includes a burner 210, a combustion chamber box 220 and a heat exchanger 230 arranged in sequence from top to bottom, the collection hood 10 of the smoke exhaust device 100 is located below the heat exchanger 230, and the collection port 1011 faces the heat exchanger 230. The water heater also includes a fan 300 connected to 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.
[0056] In this embodiment, the water heater is specifically a strong drum type gas water heater with inverted combustion. The water heater includes a shell 500, and components such as a water heater body 200, a fan 300 and a gas proportional valve 400 arranged in the shell 500. The water heater body 200 includes a burner 210, a combustion chamber box 220 and a heat exchanger 230 arranged in sequence from top to bottom. The fan 300 and the gas proportional valve 400 are arranged on the top of the burner 210 and are connected to the burner 210. The amount of gas introduced into the burner 210 can be controlled by the gas proportional valve 400. The secondary air can be added to the burner 210 by the fan 300, and at the same time, the air flow can be driven to flow from top to bottom along the water heater body 200 to the smoke exhaust device 100. The collecting hood 10 of the smoke exhaust device 100 is located below the heat exchanger 230, and the collecting port 1011 of the collecting hood 10 faces the heat exchanger 230. The smoke exhaust pipe 20 is arranged on one side of the water heater body 200 in a horizontal direction (for example, in the left and right direction). The smoke exhaust pipe 20 extends upward from the top of the collecting hood 10, and the smoke exhaust pipe 20 is provided with a smoke exhaust port 201 at one end thereof passing through the outside of the shell 500.
[0057] When the water heater is running, driven by the fan 300, the high-temperature flue gas generated by the burner 210 flows downward along the flue inside the combustion chamber box 220 to the heat exchanger 230, and the high-temperature flue gas exchanges heat with the heat exchanger 230 to heat the water flow inside the heat exchanger 230. The flue gas after heat exchange further flows downward to the collection chamber 101 located below the heat exchanger 230, and is finally discharged from the exhaust port 201 of the exhaust channel 202. After heat exchange, condensed water will be generated on the surface of the heat exchanger 230. Under the action of gravity, the condensed water drips into the collecting chamber 101 through the collecting port 1011, and then flows to the atomizing chamber 103 through the collecting chamber 101. The condensed water in the atomizing chamber 103 is then atomized by the atomizing module 30, so that the atomized condensed water can be transported to the smoke exhaust port 201 through the smoke exhaust channel 202 for discharge along with the flue gas. In this way, the functions of smoke exhaust and condensed water exhaust can be realized at the same time; and the end of the smoke exhaust channel 202 close to the atomizing chamber 103 is expanded toward the atomizing chamber 103, so that a larger space is formed at the part where the atomizing chamber 103 and the smoke exhaust channel 202 are connected, which is conducive to increasing the atomization space and improving the atomization effect. In addition, driven by the fan 300, the flue gas flows downward, and the flow direction of the flue gas is consistent with the dripping direction of the condensed water on the surface of the heat exchanger 230. The flue gas can blow faster to accelerate the dripping of the condensed water, thereby preventing a large amount of condensed water from adhering to the surface of the heat exchanger 230 to form a water film and affecting the heat exchange efficiency. In this way, the heat exchange efficiency of the water heater can be improved.
[0058] 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 smoke exhaust device, characterized in that: include: A collecting hood, wherein the collecting hood is provided with a collecting chamber and an atomizing chamber which are interconnected, and the collecting chamber has a collecting port for introducing smoke and condensed water; A smoke exhaust pipe, the smoke exhaust pipe is connected to the collecting hood, the smoke exhaust pipe is provided with a smoke exhaust port and a smoke exhaust channel connecting the smoke exhaust port with the atomizing chamber, and one end of the smoke exhaust channel close to the atomizing chamber is expanded toward the atomizing chamber; as well as An atomization module is disposed on the collection cover and is used to atomize the condensed water in the atomization chamber.
2. The smoke exhaust device according to claim 1, characterized in that: The smoke exhaust pipe includes an introduction section and a smoke exhaust section which are interconnected. The introduction section is arranged at the top of the collecting cover. The smoke exhaust section extends upward from the top of the introduction section. The top of the smoke exhaust section is provided with the smoke exhaust port. The inner diameter of the introduction section is gradually expanded toward the atomization chamber.
3. The smoke exhaust device according to claim 1, characterized in that: The height of the atomization chamber is not less than 80 mm.
4. The smoke exhaust device according to claim 1, characterized in that: The atomization module comprises an atomization element for atomizing condensed water, and the atomization element is arranged in the atomization chamber at a position opposite to the smoke exhaust channel.
5. The smoke exhaust device according to claim 1, characterized in that: The atomization modules are provided in plurality.
6. The smoke exhaust device according to claim 1, characterized in that: The smoke exhaust pipe and the collecting cover are integrally formed.
7. The smoke exhaust device according to claim 1, characterized in that: The smoke exhaust device further comprises a connecting bracket arranged on the smoke exhaust pipe and / or the collecting hood.
8. The smoke exhaust device according to any one of claims 1 to 7, characterized in that: The smoke exhaust device also includes a liquid level detection module, which is used to detect the liquid level in the atomization chamber; the atomization module is used to open when the liquid level in the atomization chamber reaches a first preset liquid level, and is used to close when the liquid level in the atomization chamber 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. A water heater, characterized in that: It comprises a water heater body and a smoke exhaust device as claimed in any one of claims 1 to 8, wherein a collecting port of the smoke exhaust device faces the water heater body, and smoke and condensed water generated by the operation of the water heater body flow to the smoke exhaust device through the collecting port.
10. The water heater according to claim 9, characterized in that The water heater body includes a burner, a combustion chamber box and a heat exchanger which are arranged in sequence from top to bottom. The collection hood of the smoke exhaust device is located below the heat exchanger, and the collection port faces the heat exchanger. The water heater also includes a fan connected to the burner, and the fan is used to drive the airflow from top to bottom through the water heater body to flow to the smoke exhaust device.