Smoke exhaust device and water heater

Abstract

The utility model discloses a fume extractor and a water heater, and relates to the technical field of water heaters, the fume extractor comprises a collecting cover, the collecting cover is provided with a collecting cavity, a purifying cavity and an atomizing cavity, the collecting cavity is provided with a collecting port used for leading in fume and condensate water, the purifying cavity and the atomizing cavity are respectively communicated with the collecting cavity, and the purifying cavity is communicated with the atomizing cavity. The purification cavity is used for purifying condensate water and then conveying the purified condensate water to the atomization cavity, and the atomization cavity is used for atomizing the condensate water; the flow guide part is arranged at the joint of the collecting cavity and the purifying cavity, and the flow guide part is used for guiding condensate water into the purifying cavity; the smoke exhaust pipe is connected with the collecting cover, and the smoke exhaust pipe is used for discharging smoke and atomized condensate water; according to the utility model, the condensate water can completely enter the purification cavity, is firstly purified and then is guided into the atomization cavity, so that the influence on the atomization effect of the condensate water due to the fact that part of the condensate water accidentally enters the atomization cavity is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, and particularly relates to a smoke exhaust device and a water heater. Background Art

[0002] Under the background of energy conservation and emission reduction, improving the energy efficiency of water heaters has become a trend in the industry. Conventional condensing gas water heaters generally achieve high energy efficiency by utilizing the latent heat of vaporization of flue gas. However, a large amount of condensed water is generated during the process of utilizing the latent heat of vaporization of flue gas. In related technologies, some smoke exhaust devices of water heaters are provided with an independent purification chamber and an atomization chamber. The condensed water is physically settled and purified in the purification chamber to remove impurities therein, and then the purified condensed water is atomized in the atomization chamber and discharged along with the flue gas. During the process of introducing the condensed water into the purification chamber, some condensed water may enter the atomization chamber. Summary of the Utility Model

[0003] The main object of the utility model is to propose a smoke exhaust device and a water heater, aiming to enable all the condensed water to enter the purification chamber for purification.

[0004] To achieve the above object, the smoke exhaust device proposed by the utility model includes:

[0005] A collection hood, the collection hood is provided with a collection chamber, a purification chamber and an atomization chamber. The collection chamber has a collection port for introducing flue gas and condensed water. The purification chamber and the atomization chamber are respectively communicated with the collection chamber. The purification chamber is used for purifying the condensed water and then conveying it to the atomization chamber, and the atomization chamber is used for atomizing the condensed water;

[0006] A flow guide member, which is arranged at the connection between the collection chamber and the purification chamber, and the flow guide member is used for guiding the condensed water into the purification chamber; and

[0007] A smoke exhaust pipe, which is connected to the collection hood, and the smoke exhaust pipe is used for discharging the flue gas and the atomized condensed water.

[0008] In an embodiment, the purification chamber is located below the collection chamber. The flow guide member includes a first flow guide plate, the first flow guide plate has a first inlet end and a first outlet end which are oppositely arranged, and the first flow guide plate is inclined downward from the first inlet end towards the first outlet end.

[0009] In an embodiment, the chamber wall of the collection chamber opposite to the collection port has a flow guide surface, and the flow guide surface extends obliquely from the end of the collection port far away from the atomization chamber towards the first flow guide plate.

[0010] In one embodiment, the first inlet end is disposed close to the diversion surface and connected to the inner wall of the purification chamber, and a first water passing gap is formed between the first outlet end and the inner wall of the purification chamber.

[0011] In one embodiment, an arc-shaped diversion portion is provided at one end of the diversion surface close to the first inlet end, and the arc-shaped diversion portion is connected to the first inlet end.

[0012] In one embodiment, the diversion member further includes a second diversion plate, which is disposed below the first diversion plate and spaced from the first diversion plate. The second diversion plate has a second inlet end and a second outlet end disposed opposite to each other. The second inlet end is disposed close to the first outlet end, and the second diversion plate extends obliquely downward from the second inlet end towards the second outlet end.

[0013] In one embodiment, the second inlet end is connected to the inner wall of the purification chamber, and a second water passing gap is formed between the second outlet end and the inner wall of the purification chamber; and / or

[0014] The angle between the first diversion plate and the horizontal plane is not less than 1 degree and not greater than 45 degrees; and / or

[0015] The angle between the second diversion plate and the horizontal plane is not less than 1 degree and not greater than 45 degrees; and / or

[0016] The projection of the first diversion plate on the horizontal plane partially overlaps with the projection of the second diversion plate on the horizontal plane.

[0017] In one embodiment, the collection hood further has a water inlet chamber, which connects the collection port and the collection chamber. The water inlet chamber has a first inner wall close to the atomization chamber, and the purification chamber has a second inner wall close to the atomization chamber. The second inner wall is located on one side of the first inner wall close to the atomization chamber.

[0018] In one embodiment, the collection hood includes a hood body and a partition plate disposed inside the hood body. The hood body is provided with the collection chamber, the purification chamber and the atomization chamber. The partition plate separates the purification chamber from the atomization chamber, and a communication area for communicating the purification chamber with the atomization chamber is formed at the bottom of the partition plate.

[0019] In one embodiment, the collection hood includes a hood body and a partition plate disposed inside the hood body. The hood body is provided with the collection chamber, the purification chamber and the atomization chamber. The partition plate separates the purification chamber from the atomization chamber, and a communication area for communicating the purification chamber with the atomization chamber is formed at the bottom of the partition plate.

[0020] The present utility model also provides a water heater, which includes a water heater body and the smoke exhaust device as described above. The collection port of the smoke exhaust device faces the water heater body, and the flue gas and condensed water generated during the operation of the water heater body flow to the smoke exhaust device through the collection port.

[0021] Through the technical solution of the present utility model, a flow guiding member is provided at the connection between the collection chamber and the atomization chamber to guide the condensed water flowing from the collection chamber to the atomization chamber, so that all the condensed water can enter the purification chamber for purification first and then be introduced into the atomization chamber, avoiding the situation that part of the condensed water accidentally enters the atomization chamber due to the collection chamber being connected to both the purification chamber and the atomization chamber at the same time, which affects the atomization effect of the condensed water and the service life of the atomization module in the atomization chamber. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 It is a schematic structural diagram of an embodiment of the water heater provided by the present utility model;

[0024] Figure 2 It is a schematic structural diagram of an embodiment of the smoke exhaust device provided by the present utility model;

[0025] Figure 3 For Figure 2 The partial enlarged view at A in

[0026] Explanation of the Reference Numerals in the Drawings:

[0027] 100. Smoke exhaust device; 10. Collection hood; 11. Flow guiding surface; 111. Arc flow guiding portion; 12. Partition board; 13. Drain pipe; 101. Collection chamber; 1011. Collection port; 102. Atomization chamber; 103. Water inlet chamber; 104. Purification chamber; 1041. First water passing gap; 1042. Second water passing gap; 1043. Communication area; 20. Smoke exhaust pipe; 21. Smoke exhaust section; 22. Introduction section; 30. Flow guiding member; 31. First flow guiding plate; 32. Second flow guiding plate; 40. Atomization module; 50. Drain valve; 201. Smoke exhaust port; 202. Smoke exhaust passage; 200. Water heater body; 210. Burner; 220. Combustion chamber box body; 230. Heat exchanger; 300. Fan.

[0028] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the drawings. Detailed implementation manners

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0032] 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 vaporization of flue gas, but a large amount of condensed water will be generated during the process of utilizing the latent heat of vaporization of flue gas. In related technologies, some exhaust gas devices of water heaters are provided with an independent purification chamber and an atomization chamber. The condensed water is physically settled and purified in the purification chamber to remove impurities therein, and then the purified condensed water is atomized in the atomization chamber and discharged with the flue gas. However, when the exhaust gas device introduces the condensed water into the purification chamber, some condensed water may enter the atomization chamber.

[0033] The present utility model proposes an exhaust gas device.

[0034] Please refer to Figure 2 and Figure 3, in an embodiment of the present utility model, the smoke exhaust device includes a collection hood 10, a diversion member 30, and a smoke exhaust pipe 20. The collection hood 10 is provided with a collection chamber 101, a purification chamber 104, and an atomization chamber 102. The collection chamber 101 has a collection port 1011 for introducing flue gas and condensed water. The purification chamber 104 and the atomization chamber 102 are respectively communicated with the collection chamber 101. The purification chamber 104 is used to purify the condensed water and then transport it to the atomization chamber 102. The atomization chamber 102 is used to atomize the condensed water. The diversion member 30 is disposed at the connection between the collection chamber 101 and the purification chamber 104, and the diversion member 30 is used to introduce the condensed water into the purification chamber 104. The smoke exhaust pipe 20 is connected to the collection hood 10, and the smoke exhaust pipe 20 is used to discharge the flue gas and the atomized condensed water.

[0035] For ease of understanding, the example of the smoke exhaust device being applied to a water heater will be used for illustration. Of course, the smoke exhaust device can also be used in other devices that require simultaneous smoke exhaust and drainage. Combining Figure 1 As shown, the water heater includes a water heater body 200 and a smoke exhaust device 100. The collection port 1011 of the smoke exhaust device 100 faces the water heater body 200. During the operation of the water heater body 200, the flue gas and condensed water generated flow through the collection port 1011 to the smoke exhaust device 100.

[0036] Among them, the water heater body 200 may include a burner 210, a combustion chamber box 220, and a heat exchanger 230. A flue is formed inside the combustion chamber box 220 to communicate the burner 210 with the heat exchanger 230. When the water heater is working, driven by a blower 300, the high-temperature flue gas 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 heat exchange is carried out with the heat exchanger 230, so that the water in the heat exchanger 230 can be heated. The flue gas after heat exchange flows through the collection port 1011 to the smoke exhaust device 100. At the same time, the 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 condensed water will be generated when other relatively low-temperature parts inside the water heater body 200 come into contact with the flue gas) also flows through the collection port 1011 to the smoke exhaust device.

[0037] In the present utility model, an exhaust pipe 20 is connected to the collection hood 10. The exhaust pipe 20 is provided with an exhaust port 201 and an exhaust passage 202 that communicates the exhaust port 201 with the atomization chamber 102. The collection hood 10 and the exhaust pipe 20 can be of an integrally formed structure or can be of a split structure and then assembled. Optionally, for the purpose of simplifying the manufacturing process, the exhaust pipe 20 and the collection hood 10 are integrally formed. For example, the collection hood 10 and the exhaust pipe 20 can be integrally drawn from a sheet metal part, or the collection hood 10 and the exhaust pipe 20 can be integrally injection molded from a plastic part. Of course, the collection hood 10 and the exhaust pipe 20 can also be of a split arrangement and then assembled and connected through, for example, flanges, screws, buckles or other structures. In addition, the collection hood 10 and the exhaust pipe 20 can also be fixed by welding. No specific limitation is made here.

[0038] In the present utility model, a purification chamber 104 is used to collect the condensed water from the collection chamber 101 and purify the condensed water. There are many ways for the purification chamber 104 to purify the condensed water. For example, the condensed water containing impurities is purified in the purification chamber 104 by physical precipitation, or a filtering member or an adsorbing member is arranged in the purification chamber 104 to filter or adsorb the impurities in the condensed water to achieve the purification treatment of the condensed water. After the purified condensed water is introduced into the atomization chamber 102, the atomization chamber 102 is used to atomize the condensed water. There are various operation modes for the atomization chamber 102 to atomize the condensed water. For example, an atomization module 40 can be arranged in the atomization chamber 102 to atomize the condensed water. Among them, the atomization module 40 can be an ultrasonic atomization module, a pulse atomization module, a centrifugal atomization module or other structures that can atomize water, and no limitation is made here. Since the collection chamber 101 communicates with the atomization chamber 102, the flue gas from the water heater body 200 can be introduced into the atomization chamber 102. The atomized condensed water in the atomization chamber 102 flows along with the flue gas to the exhaust pipe 20 and flows out from the exhaust port 201, so that the exhaust device 100 realizes the discharge of flue gas and condensed water at the same time.

[0039] Among them, when the collection chamber 101 introduces the condensed water into the purification chamber 104, the condensed water flows along the inner wall of the purification chamber 104, enters the diversion member 30, and is diverted through the diversion member 30, and the condensed water enters the purification chamber 104. Since the collection chamber 101 communicates with the atomization chamber 102 and the purification chamber 104 respectively, the flow of the condensed water can be guided through the diversion member 30 to prevent some of the condensed water that has not been purified from entering the atomization chamber 102, resulting in the impurities in the condensed water affecting the atomization effect and reducing the service life of the atomization module 40.

[0040] The technical solution of the present utility model is to provide a diversion member 30 at the connection between the collection chamber 101 and the atomization chamber 102 to divert the condensed water flowing from the collection chamber 101 to the atomization chamber 102, so that all the condensed water can enter the purification chamber 104 for purification first and then be introduced into the atomization chamber 102, avoiding the situation that some condensed water accidentally enters the atomization chamber 102 due to the collection chamber 101 being connected to both the purification chamber 104 and the atomization chamber 102 at the same time, which affects the atomization effect of the condensed water and the service life of the atomization module 40 in the atomization chamber 102.

[0041] Refer to Figure 2 、 Figure 3 As shown in the embodiments of the present utility model, the purification chamber 104 is located below the collection chamber 101. The diversion member 30 includes a first diversion plate 31, and the first diversion plate 31 has a first inlet end and a first outlet end which are oppositely arranged. The first diversion plate 31 is inclined downward from the first inlet end towards the first outlet end.

[0042] In the above embodiment, since the diversion member 30 is provided at the connection between the collection chamber 101 and the purification chamber 104, and the diversion member 30 includes the first diversion plate 31, the purification chamber 104 is located below the collection chamber 101, and the first diversion plate 31 is inclined downward from the first inlet end towards the first outlet end (it can be understood that the first diversion plate 31 can be inclined downward from left to right or from right to left). The overall inclination direction of the first diversion plate 31 is inclined from the collection chamber 101 towards the purification chamber 104. When the condensed water flows downward along the inner wall of the collection chamber 101, it will fall onto the first diversion plate 31 and flow into the purification chamber 104 along the first diversion plate 31. Through the diversion of the first diversion plate 31, the smoothness of the condensed water flowing into the purification chamber 104 can be increased, and during the process of the condensed water entering the purification chamber 104, it is possible to avoid a too large drop in the flow of the condensed water, resulting in a large impact and splashing.

[0043] Refer to Figure 2 、 Figure 3 As shown in the embodiments of the present utility model, the chamber wall of the collection chamber 101 opposite to the collection port 1011 has a diversion surface 11, and the diversion surface 11 extends obliquely from the end of the collection port 1011 away from the atomization chamber 102 towards the first diversion plate 31.

[0044] In the above embodiments, since the collection chamber 101 is disposed above the purification chamber 104, the inclination direction of the diversion surface 11 is inclined downward from top to bottom towards the first diversion plate 31, and the lower end of the diversion surface 11 can be correspondingly disposed at the upper end of the first diversion plate 31, or the lower end of the diversion surface 11 can be correspondingly disposed at the middle position of the first diversion plate 31. With such a setting, first, the condensed water flowing into the collection chamber 101 can be guided by the diversion surface 11, so that the condensed water flows more smoothly along the diversion surface 11 towards the first diversion plate 31, and then through the relay of the first diversion plate 31, it flows into the purification chamber 104; second, when the flue gas flows from the collection port 1011 to the atomization chamber 102, it can also flow along the diversion surface 11, so that the diversion surface 11 realizes the guidance of the flue gas flow.

[0045] Referring to Figure 2 、 Figure 3 As shown, in an embodiment of the present invention, the first inlet end is disposed close to the diversion surface 11 and is connected to the inner wall of the purification chamber 104, and a first water passing gap 1041 is formed between the first outlet end and the inner wall of the purification chamber 104.

[0046] It can be understood that since the collection chamber 101 is located above the purification chamber 104 and the first inlet end close to the collection chamber 101 is disposed close to the diversion surface 11, the first inlet end is close to the diversion surface 11 and the first inlet end is connected to the inner wall of the purification chamber 104. Therefore, the condensed water flowing along the diversion surface 11 into the purification chamber 104 can be completely guided by the first diversion plate 31, flows along the first inlet end to the first outlet end, and flows into the purification chamber 104 from the first water passing gap 1041, so that the condensed water can be effectively guided during the entire flow process from the collection port 1011 to the purification chamber 104, thereby ensuring that the condensed water can accurately enter the purification chamber 104 for purification.

[0047] Referring to Figure 2 、 Figure 3 As shown, optionally, an arc-shaped diversion portion 111 is provided at one end of the diversion surface 11 close to the first inlet end, and the arc-shaped diversion portion 111 is connected to the first inlet end.

[0048] Wherein, one end of the arc-shaped diversion portion 111 can be tangentially disposed with the diversion surface 11, and the other end of the arc-shaped diversion portion 111 can be tangentially disposed with the first diversion plate 31. With such a setting, during the process of the condensed water flowing from the diversion surface 11 to the first diversion plate 31, the water flow will not encounter a sharp transition corner, which impacts the water flow speed and causes the condensed water to splash, and the condensed water flows more smoothly.

[0049] Continue to refer to 2, Figure 3, in the embodiment of the present utility model, the flow guide member 30 further includes a second flow guide plate 32. The second flow guide plate 32 is disposed below the first flow guide plate 31 and is spaced apart from the first flow guide plate 31. The second flow guide plate 32 has a second inlet end and a second outlet end which are oppositely arranged. The second inlet end is arranged close to the first outlet end. The second flow guide plate 32 extends obliquely downward from the second inlet end towards the second outlet end.

[0050] It can be understood that the second flow guide plate 32 extends obliquely downward from the second inlet end towards the second outlet end, and the second inlet end is arranged close to the first outlet end, so that the first flow guide plate 31 and the second flow guide plate 32 are obliquely crossed up and down. When the condensed water flows from the first water passing gap 1041 to the purification cavity 104, the condensed water will fall towards the second inlet end of the second flow guide plate 32, and then flow obliquely downward along the second flow guide plate 32, and fall into the purification cavity 104 from the second inlet end. In this way, the second flow guide plate 32 can buffer the flow rate of the condensed water flowing out from the first flow guide plate 31, preventing the condensed water flowing into the purification cavity 104 from the first water passing gap 1041 from hitting and splashing on the inner wall of the purification cavity 104 and flying out from the first water passing gap 1041 and entering the atomization cavity 102.

[0051] Continue to refer to 2. Figure 3 , in the embodiment of the present utility model, the second inlet end is connected to the inner wall of the purification cavity 104, and a second water passing gap 1042 is formed between the second outlet end and the inner wall of the purification cavity 104.

[0052] It can be understood that the second inlet end is relatively closer to the first outlet end of the first flow guide plate 32 than the second outlet end. With such a setting, the condensed water flowing from the first water passing gap 1041 to the second flow guide plate 32 can all fall on the second inlet end of the second flow guide plate 32, and then flow from the second inlet end to the second outlet end and flow into the purification cavity 104 through the second water passing gap 1042. Since the second water passing gap 1042 is arranged between the second outlet end and the inner wall of the purification cavity 104, and the first inlet end of the first flow guide plate 32 is connected to the inner wall of the purification cavity 104 and is located above the second water passing gap 1042, it will cover the upper end of the second water passing gap 1042. Therefore, the condensed water flowing from the second water passing gap 1042 to the purification cavity 104 will not fly out of the purification cavity 104 even if the drop is large or it hits and splashes inside the purification cavity 104.

[0053] Optionally, the included angle between the first flow guide plate 31 and the horizontal plane is not less than 1 degree and not more than 45 degrees; and / or

[0054] the included angle between the second flow guide plate 32 and the horizontal plane is not less than 1 degree and not more than 45 degrees.

[0055] Among them, the angle between the first deflector 31 and the horizontal plane can be set to angles such as 1 degree, 5 degrees, 10 degrees, 20 degrees, 30 degrees, 45 degrees, etc., and the angle between the second deflector 32 and the horizontal plane can be set to angles such as 1 degree, 5 degrees, 10 degrees, 20 degrees, 30 degrees, 45 degrees, etc.

[0056] With such a setting, it is possible to prevent the inclination angle of the first deflector 31 and / or the second deflector 32 from being too large, resulting in too fast a flow rate of the condensed water along the first deflector 31 and / or the second deflector 32, and it is also possible to prevent the inclination angle of the first deflector 31 and / or the second deflector 32 from being too small, so that the flow guiding speed of the first deflector 31 and / or the second deflector 32 for the condensed water is too low, resulting in too slow entry of the condensed water into the purification chamber 104.

[0057] Refer to Figure 2 、 Figure 3 As shown, in the embodiment of the present invention, the projection of the first deflector 31 on the horizontal plane partially overlaps with the projection of the second deflector 32 on the horizontal plane.

[0058] In the above embodiment, the fact that the projection of the first deflector 31 on the horizontal plane and the projection of the second deflector 32 on the horizontal plane can partially overlap means that the first deflector 31 and the second deflector 32 are distributed in an up-and-down staggered manner, and can shield the opening where the purification chamber 104 communicates with the collection chamber 101. When the condensed water evaporates, it can condense into water droplets on the first deflector 31 and the second deflector 32 and fall back into the purification chamber 104 again, preventing the condensed water in the purification chamber 104 from volatilizing into the collection chamber 101 and then reversely entering the water heater body 200. Since the condensed water generated when the water heater body 200 works is acidic and corrosive, it is possible to prevent the corrosive condensed water from volatilizing into the water heater body 200 and corroding the internal structure of the water heater body 200.

[0059] In the embodiment of the present invention, the collection cover 10 further has a water inlet chamber 103, the water inlet chamber 103 connects the collection port 1011 and the collection chamber 101, the water inlet chamber 103 has a first inner wall close to the atomization chamber 102, the purification chamber 104 has a second inner wall close to the atomization chamber 102, and the second inner wall is located on the side of the first inner wall close to the atomization chamber 102.

[0060] In the above embodiments, the purification chamber 104 may be located on the right side of the atomization chamber 102. The water inlet chamber 103 is used to collect the condensed water from the collection port 1011. Since the second inner wall of the purification chamber 104 is closer to the atomization chamber 102 than the first inner wall of the water inlet chamber 103, even when the condensed water falls towards the purification chamber 104 along the part of the water inlet chamber 103 closest to the atomization chamber 102 under the action of its own gravity, it can ensure that all the condensed water can fall into the purification chamber 104, and there will be no situation where the condensed water falling from the first inner wall into the purification chamber 104 accidentally enters the atomization chamber 102.

[0061] In an embodiment of the present invention, the collection cover 10 includes a cover body and a partition 12 provided inside the cover body. The cover body is provided with the collection chamber 101, the purification chamber 104, and the atomization chamber 102. The partition 12 separates the purification chamber 104 from the atomization chamber 102, and a communication area 1043 that communicates the purification chamber with the atomization chamber 102 is formed at the bottom of the partition 12.

[0062] In this embodiment, the top of the cover body is open to form a collection port 1011, and multiple chambers such as a collection chamber 101, a purification chamber 104, and an atomization chamber 102 are constructed inside the cover body. Among them, the purification chamber 104 and the atomization chamber 102 are respectively located on opposite sides of the partition 12. The cover body and the partition 12 can be an integrally formed structure or a split structure and then assembled and connected. A communication area 1043 that communicates the purification chamber 104 with the atomization chamber 102 is formed at the bottom of the cover body inside the partition 12. The condensed water flows through the collection chamber 101 and is guided by the guiding member 30 and enters the purification chamber 104. The condensed water naturally precipitates in the purification chamber 104 to precipitate the impurities in the condensed water. The condensed water after precipitation and purification then flows through the communication area 1043 into the atomization chamber 102 for atomization. Among them, there are various ways to form the communication area 1043. For example, the communication area 1043 can be a communication opening formed in the partition 12. Another example is that the communication area 1043 can be formed by the gap between the bottom side of the partition 12 and the bottom of the cover body.

[0063] Optionally, a water passing port is provided on the bottom wall of the cover body. The collection cover 10 further includes a drain pipe 13 extending downward from the periphery of the water passing port. A drain port is provided at the bottom end of the drain pipe 13. The partition 12 extends from the middle of the water passing port into the drain pipe 13, and the communication area 1043 is formed between the partition 12 and the drain port; a drain valve 50 is provided at the drain port.

[0064] In this embodiment, the partition plate 12 extends from the middle of the water passing port into the drain pipe 13, so that a first flow channel and a second flow channel are respectively formed on opposite sides of the partition plate 12 in the drain pipe 13. The water passing port can be divided into two halves by the partition plate 12. One half of the water passing port connects the purification chamber 104 with the first flow channel, and the other half of the water passing port connects the atomization chamber 102 with the second flow channel. The interval between the partition plate 12 and the drain port forms a communication area 1043, and the bottom end of the first flow channel is connected to the second flow channel through the communication area 1043. In this way, the purification chamber 104, the first flow channel, the communication area 1043, the second flow channel, and the atomization chamber 102 are sequentially connected to form a U-shaped flow channel structure. The opening or closing of the drain port can be realized through the drain valve 50. For example, when the smoke exhaust device 100 is applied to a water heater, when the water heater is working normally, the drain valve 50 closes the drain port, and the condensed water in the collection chamber 101 first enters the purification chamber 104, so that the impurities in the condensed water naturally precipitate in the purification chamber 104. The purified condensed water flows into the atomization chamber 102 through the first flow channel, the communication area 1043, and the second flow channel, and then the atomization module 40 atomizes the condensed water in the atomization chamber 102. When the water heater is not used for a long time, the drain port can be opened through the drain valve 50 to discharge the condensed water and impurities from the drain port.

[0065] Refer to Figure 2 As shown, in the embodiment of the present utility model, the smoke exhaust pipe 20 includes a smoke exhaust section 21 and an introduction section 22 that are connected to each other. The smoke exhaust section 21 is provided at one end of the introduction section 22 away from the atomization chamber 102, and the introduction section 22 is arranged to gradually expand from the smoke exhaust port 201 to the atomization chamber 102.

[0066] In this embodiment, the introduction section 22 is in the shape of a horn that gradually expands towards the atomization chamber 102, and the smoke exhaust section 21 is in the shape of a straight cylinder extending vertically. The flared end of the introduction section 22 is connected to the collection hood 10 in a butt joint manner, and the smoke exhaust section 21 is connected to the narrow end of the introduction section 22 in a butt joint manner. The inner diameter of the introduction section 22 is arranged to gradually expand towards the atomization chamber 102. In this way, it is beneficial to increase the atomization space, and at the same time, it can play a role in guiding the flue gas, so that the airflow entering the narrower smoke exhaust section 21 through the wider introduction section 22 can be gathered and accelerated, so that the atomized condensed water and the flue gas can enter the smoke exhaust passage 202 more smoothly.

[0067] The present utility model also provides a water heater, which includes a water heater body 200 and an exhaust device. The specific structure of the exhaust device refers to the above-mentioned embodiments. Since this water heater adopts all the technical solutions of 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 elaborated one by one here. Among them, the collection port 1011 of the exhaust device faces the water heater body 200, and the flue gas and condensed water generated during the operation of the water heater body 200 flow to the exhaust device 100 through the collection port 1011.

[0068] In the above-mentioned embodiment, the water heater body 200 includes a burner 210, a combustion chamber box body 220, and a heat exchanger 230 arranged in sequence from top to bottom. The collection hood 10 of the exhaust device is located below the heat exchanger 230, the collection port 1011 faces the heat exchanger 230, the water heater further includes a blower 300 communicated with the burner 210, and the blower 300 is used to drive the air flow to flow through the water heater body 200 from top to bottom to the exhaust device 100.

[0069] In this embodiment, the water heater can be an inverted combustion forced-draft gas water heater. The water heater includes a housing, and components such as a water heater body 200, a blower 300, and a gas proportional valve arranged in the housing. The water heater body 200 includes a burner 210, a combustion chamber box body 220, and a heat exchanger 230 arranged in sequence from top to bottom. The blower 300 and the gas proportional valve are arranged at the top of the burner 210 and communicated with the burner 210. The gas proportional valve can control the amount of gas introduced into the burner 210. The blower 300 can supply secondary air to the burner 210, and at the same time can drive the air flow to flow downward along the water heater body 200 to the exhaust device 100. The collection hood 10 of the exhaust device 100 is located below the heat exchanger 230, the collection port 1011 of the collection hood 10 faces the heat exchanger 230, the exhaust pipe 20 is arranged horizontally (for example, in the left-right direction) on one side of the water heater body 200, the exhaust pipe 20 extends upward from the top of the collection hood 10, and one end of the exhaust pipe 20 provided with an exhaust port 201 penetrates out of the housing.

[0070] When the water heater is operating, driven by the blower 300, the high-temperature flue gas generated by the combustion of the burner 210 flows downward along the flue in the combustion chamber casing 220 to the heat exchanger 230. 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 into the collection chamber 101 located below the heat exchanger 230 and is finally discharged from the smoke outlet 201 of the smoke exhaust passage 202. Condensate will be generated on the surface of the heat exchanger 230 after heat exchange. The condensate drips into the collection chamber 101 through the collection port 1011 under the action of gravity. The condensate is guided by the guide member 30 and enters the atomization chamber 102. After atomization, it enters the smoke exhaust passage 202 along with the flow of the flue gas and is discharged from the smoke outlet 201 through the smoke exhaust passage 202, realizing the functions of simultaneous smoke exhaust and condensate drainage.

[0071] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is 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, a purification chamber and an atomizing chamber, the collecting chamber has a collecting port for introducing smoke and condensed water, the purification chamber and the atomizing chamber are respectively connected with the collecting chamber, the purification chamber is used to purify the condensed water and then transport it to the atomizing chamber, and the atomizing chamber is used to atomize the condensed water; A flow guide, provided at the connection between the collection chamber and the purification chamber, the flow guide being used to guide condensed water into the purification chamber; as well as A smoke exhaust pipe is connected to the collecting hood, and the smoke exhaust pipe is used to discharge smoke and atomized condensed water.

2. The smoke exhaust device according to claim 1, characterized in that: The purification chamber is located below the collection chamber, and the guide member includes a first guide plate having a first inlet end and a first outlet end that are oppositely arranged, and the first guide plate is inclined downward from the first inlet end toward the first outlet end.

3. The smoke exhaust device according to claim 2, characterized in that: The cavity wall of the collecting cavity opposite to the collecting port has a guide surface, and the guide surface is obliquely extended from one end of the collecting port away from the atomizing cavity toward the first guide plate.

4. The smoke exhaust device according to claim 3, characterized in that: The first inlet end is arranged close to the guide surface and connected to the inner wall of the purification chamber, and a first water flow gap is formed between the first outlet end and the inner wall of the purification chamber.

5. The smoke exhaust device according to claim 4, characterized in that: An arc flow guide portion is provided at one end of the flow guide surface close to the first inlet end, and the arc flow guide portion is connected to the first inlet end.

6. The smoke exhaust device according to claim 2, characterized in that: The guide member also includes a second guide plate, which is arranged below the first guide plate and spaced apart from the first guide plate. The second guide plate has a second inlet end and a second outlet end that are oppositely arranged. The second inlet end is arranged close to the first outlet end. The second guide plate extends obliquely downward from the second inlet end toward the second outlet end.

7. The smoke exhaust device according to claim 6, characterized in that: The second inlet end is connected to the inner wall of the purification chamber, and a second water gap is formed between the second outlet end and the inner wall of the purification chamber; and / or The angle between the first guide plate and the horizontal plane is not less than 1 degree and not more than 45 degrees; and / or The angle between the second guide plate and the horizontal plane is not less than 1 degree and not more than 45 degrees; and / or The projection of the first guide plate on the horizontal plane partially overlaps with the projection of the second guide plate on the horizontal plane.

8. The smoke exhaust device according to any one of claims 1 to 7, characterized in that: The collecting cover also has a water inlet cavity, which connects the collecting port and the collecting cavity, and the water inlet cavity has a first inner wall close to the atomizing cavity, and the purification cavity has a second inner wall close to the atomizing cavity, and the second inner wall is located on a side of the first inner wall close to the atomizing cavity.

9. The smoke exhaust device according to any one of claims 1 to 7, characterized in that: The collecting hood comprises a hood body and a partition arranged in the hood body, the hood body is provided with the collecting chamber, the purification chamber and the atomizing chamber, the partition separates the purification chamber from the atomizing chamber, and a connecting area connecting the purification chamber with the atomizing chamber is formed at the bottom of the partition.

10. 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 9, 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.

Images