Smoke hood assembly and balanced gas water heating device

Abstract

The utility model relates to water heater technical field discloses a smoke hood subassembly and balanced gas water heating equipment. Smoke hood subassembly is applied to balanced gas water heating equipment, including casing, baffle and baffle, baffle is located in casing and will be casing divide into smoke exhaust chamber and air inlet chamber, baffle is equipped with the air inlet of being used for with the smoke outlet of balanced gas water heating equipment connects, the lateral wall of casing is equipped with air inlet and smoke exhaust, the bottom of casing is equipped with the installation mouth, air inlet and installation mouth are connected with air inlet chamber respectively, the air inlet and smoke exhaust are connected with smoke exhaust chamber respectively, baffle is located at the air inlet and is movably connected with baffle, to adjust the flue gas flow area of air inlet. The utility model effectively satisfies the different power balanced gas water heating equipment because of the different exhaust resistance requirement at the same time, reduces the complexity of balanced gas water heating equipment installation in the open air.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a fume hood assembly and a balanced gas water heater. Background Technology

[0002] Gas-fired water heaters can be classified into several types according to their exhaust method, including direct-vent, forced-draft, and balanced-flue types. Balanced-flue gas-fired water heaters, with their fully enclosed combustion structure and double-layer flue design (mainly including separate and coaxial flues), draw in the necessary air from outdoors and exhaust the waste gas outdoors, without consuming or polluting indoor air. They can be installed in enclosed spaces such as bathrooms and cabinets. However, balanced-flue gas-fired water heaters have a larger flue diameter, requiring more precise wall openings during installation, and some areas do not allow gas pipes to enter indoor spaces, limiting their advantages. When existing balanced-flue gas-fired water heaters need to be installed outdoors, their flue diameter is larger than that of forced-draft systems. Different rated power balanced-flue gas-fired water heaters require different flue diameters due to varying exhaust resistance requirements, and the flues are also longer. Therefore, different installation structures are needed to secure the flues of different diameters, and if not securely fixed, the flues may sway or even fall off in windy weather, increasing the complexity of installing balanced-flue gas-fired water heaters outdoors. Utility Model Content

[0003] The first technical problem solved by this utility model is to provide a fume hood assembly that effectively meets the different exhaust resistance requirements of balanced gas water heaters with different power ratings, while reducing the complexity of installing balanced gas water heaters outdoors.

[0004] The second technical problem solved by this utility model is to provide a balanced gas water heater that effectively reduces the complexity of its outdoor installation.

[0005] The first technical problem mentioned above is solved by the following technical solution: A fume hood assembly, applied to a balanced gas-fired water heater, includes a housing, a partition, and a baffle. The partition is disposed within the housing and divides the housing into an exhaust chamber and an air inlet chamber. The partition has an inlet for communicating with the exhaust port of the equipment body of the balanced gas-fired water heater. The side wall of the housing has an air inlet and an exhaust port. The bottom of the housing has an installation port. The air inlet and the installation port are respectively connected to the air inlet chamber, and the exhaust port and the exhaust port are respectively connected to the exhaust chamber. The baffle is disposed at the exhaust port and is movably connected to the partition to adjust the flue gas flow area of ​​the exhaust port.

[0006] Compared with the prior art, the fume hood assembly of this utility model has the following advantages: When installing the fume hood assembly, the housing is fixedly connected to the top of the balanced gas water heater through the installation port. The smoke inlet on the partition is connected to the smoke outlet of the balanced gas water heater. The air inlet of the balanced gas water heater is located in the air inlet chamber. In this way, the flue gas generated when the balanced gas water heater is working can enter the exhaust chamber through the smoke outlet and the smoke inlet in sequence, and finally be discharged through the exhaust port on the side wall of the housing. Outside air enters the interior of the balanced gas water heater through the air inlet on the side wall of the housing, the air inlet chamber and the air inlet in sequence. This invention integrates the exhaust chamber and the air intake chamber into a single housing. During installation, the housing is fixedly connected to the top of the balanced gas water heater via the mounting port. Connecting the flue gas inlet of the partition to the exhaust gas outlet of the balanced gas water heater allows for independent air intake and exhaust. Furthermore, the baffle plate on the flue gas inlet allows for adjustment of the flue gas flow area to meet the varying exhaust resistance requirements of balanced gas water heaters with different rated power, thereby regulating the exhaust resistance to ensure normal operation. Therefore, compared to the fixed installation of flue pipes in existing balanced gas water heaters installed outdoors, this invention eliminates the need for multiple different installation structures for flue pipes of varying diameters, thus reducing the complexity of installing balanced gas water heaters outdoors.

[0007] In one embodiment, along the vertical direction of the housing, the exhaust chamber is located above the air inlet chamber; the partition is provided with a flue gas passage located in the air inlet chamber, the flue gas passage having a flue gas inlet and a flue gas outlet, the flue gas inlet being adapted to communicate with the exhaust port of the equipment body of the balanced gas water heater, and the flue gas outlet communicating with the exhaust port.

[0008] In one embodiment, the baffle and the partition are rotatably connected.

[0009] In one embodiment, a limiting structure is also included. One end of the baffle is rotatably connected to the partition, and the other end of the baffle is provided with an elastic locking part. The limiting structure is fixed on the partition. The limiting structure is a guide rail with multiple limiting grooves. The multiple limiting grooves are distributed on the rotation path of the baffle, and the elastic locking part is locked and fixed with any of the limiting grooves.

[0010] In one embodiment, the other end of the baffle is also provided with a force-applying part.

[0011] In one embodiment, both the exhaust port and the air inlet are provided with a rainproof structure. The rainproof structure includes a mounting frame adapted to the exhaust port and the air inlet, and multiple inclined plates spaced apart in the mounting frame in the vertical direction. The inclined plates are inclined downward from the inside to the outside.

[0012] In one embodiment, the air inlet and the smoke outlet are located on different side walls of the housing.

[0013] In one embodiment, the housing includes an upper housing and a lower housing, the upper housing and the partition forming a smoke exhaust chamber, and the lower housing and the partition forming an air intake chamber; the opening of the upper housing is sealed to the lower housing through a sealing structure.

[0014] In one embodiment, the sealing structure is an annular rib integrally formed with the partition.

[0015] The second technical problem mentioned above is solved by the following technical solution: A balanced gas-fired water heater includes a fume hood assembly, wherein the air inlet of the equipment body is connected to the air inlet chamber, and the smoke outlet of the equipment body is connected to the smoke exhaust chamber.

[0016] Compared with the prior art, the balanced gas water heater of this utility model has the following advantages: When installing the fume hood assembly on the balanced gas water heater, the shell is fixedly connected to the top of the balanced gas water heater through the installation port. The flue gas inlet on the partition is connected to the flue gas outlet of the equipment body. The air inlet of the balanced gas water heater is located in the air inlet chamber. In this way, the flue gas generated when the balanced gas water heater is working can enter the exhaust chamber through the flue gas outlet and the flue gas inlet in sequence, and finally be discharged through the exhaust gas outlet on the side wall of the shell. Meanwhile, the outside air enters the interior of the balanced gas water heater through the air inlet on the side wall of the shell, the air inlet chamber and the air inlet in sequence. This invention integrates the exhaust chamber and the air intake chamber into a single housing. During installation, the housing is fixedly connected to the top of the balanced gas water heater via the mounting port. Connecting the flue gas inlet of the partition to the exhaust gas outlet of the balanced gas water heater allows for independent air intake and exhaust. Furthermore, the baffle plate on the flue gas inlet allows for adjustment of the flue gas flow area to meet the varying exhaust resistance requirements of balanced gas water heaters with different rated power, thereby regulating the exhaust resistance to ensure normal operation. Therefore, compared to the fixed installation of flue pipes in existing balanced gas water heaters installed outdoors, this invention eliminates the need for multiple different installation structures for flue pipes of varying diameters, thus reducing the complexity of installing balanced gas water heaters outdoors. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1This is an exploded view of the smoke hood assembly according to an embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the baffle according to an embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram of the limiting structure according to an embodiment of the present utility model.

[0021] Figure 4 This is a schematic diagram of the baffle assembly in a fully opened position according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the baffle assembly in a partially opened state according to an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the baffle assembly in the opening process according to an embodiment of the present invention.

[0024] Figure 7 for Figure 6 A magnified view of part A.

[0025] Figure 8 This is a schematic diagram of a balanced gas-fired water heater according to an embodiment of the present invention.

[0026] Figure 9 This is a partial cross-sectional view of a balanced gas-fired water heater according to an embodiment of the present invention.

[0027] Figure 10 This is a partial cross-sectional view of a balanced gas-fired water heater according to another embodiment of the present invention.

[0028] Figure 11 This is a schematic diagram of a rain shelter for a balanced gas-fired water heater according to an embodiment of the present invention. Figure 1 .

[0029] Figure 12 This is a schematic diagram of a rain shelter for a balanced gas-fired water heater according to an embodiment of the present invention. Figure 2 .

[0030] Explanation of reference numerals in the attached figures: 1. Shell; 101. Exhaust chamber; 102. Inlet chamber; 103. Inlet; 104. Exhaust port; 105. Flue gas passage; 11. Upper shell; 12. Lower shell; 2. Partition; 201. Inlet; 202. Sealing structure; 3. Equipment body; 301. Flue gas connector; 302. Air connector; 4. Baffle; 401. Elastic locking part; 402. Force application part; 5. Rainproof structure; 501. Mounting frame; 502. Inclined plate; 6. Limiting structure; 601. Limiting groove. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] In the description of this application, it should be understood that the terms "center", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] The following is combined with Figures 1 to 12 The following describes embodiments of the present invention.

[0036] According to an embodiment of the present invention, a fume hood assembly is provided for use in a balanced gas water heater, comprising a housing 1, a partition 2, and a baffle 4. The partition 2 is disposed within the housing 1 and divides the housing 1 into a flue gas chamber 101 and an air inlet chamber 102. The partition 2 is provided with a flue gas inlet 201 for communicating with the flue gas outlet of the equipment body 3 of the balanced gas water heater. The side wall of the housing 1 is provided with an air inlet 103 and a flue gas outlet 104. The bottom of the housing 1 is provided with an installation port. The air inlet 103 and the installation port are respectively connected to the air inlet chamber 102, and the flue gas inlet and the flue gas outlet 104 are respectively connected to the flue gas chamber 101. The baffle 4 is disposed at the flue gas inlet 201 and is movably connected to the partition 2 to adjust the flue gas flow area of ​​the flue gas inlet 201.

[0037] like Figure 1 and Figure 8As shown, in this embodiment, the shell 1 is a cuboid. The projected area of ​​the shell 1 along the vertical direction on the equipment body 3 of the balanced gas water heater is slightly smaller than the area of ​​the top surface of the balanced gas water heater. This minimizes the height of the shell 1 in the vertical direction, allowing for a secure connection to the equipment body 3 of the balanced gas water heater using simple bolts, thus reducing installation difficulty. The partition 2 is located slightly above the shell 1 along the vertical direction and can be integrally formed with the shell 1. The air inlet 103 and the flue gas outlet 104 are respectively located on the side walls of the air inlet chamber 102 and the flue gas outlet 101, and one or more can be provided as needed. In this embodiment, multiple air inlets 103 and multiple flue gas outlets 104 are preferably symmetrically arranged.

[0038] Compared with the prior art, the beneficial effects of the fume hood assembly of this utility model are as follows: When installing the fume hood assembly, the housing 1 is fixedly connected to the top of the equipment body 3 of the balanced gas water heater through the installation port, the smoke inlet 201 on the partition 2 is connected to the smoke outlet of the balanced gas water heater, and the air inlet of the balanced gas water heater is located in the air inlet chamber, such as... Figure 9 and Figure 10 As indicated by the black arrow, the flue gas generated during the operation of this balanced gas-fired water heater can sequentially enter the exhaust chamber 101 through the exhaust port and the exhaust port 201, and finally be discharged through the exhaust port 104 on the side wall of the casing 1; Figure 9 and Figure 10 As shown by the white arrow, outside air enters the body 3 of the balanced gas water heater sequentially through the air inlet 103, air inlet chamber 102, and air vent on the side wall of the housing 1. Because the exhaust chamber 101 and air inlet chamber 102 are integrated into the same housing 1, during installation, the housing 1 is fixedly connected to the top of the balanced gas water heater body via the mounting port. Connecting the smoke inlet 201 of the partition 2 to the smoke outlet of the balanced gas water heater allows for independent air intake and exhaust. Furthermore, the baffle 4 on the smoke inlet 201 of the partition 2 allows for adjustment of the flue gas flow area according to the different exhaust resistance requirements of balanced gas water heaters with different rated power, thereby adjusting the exhaust resistance to meet the normal operation requirements of the equipment. Therefore, compared to the fixed installation of the flue pipe in existing balanced gas water heaters installed outdoors, this invention eliminates the need for multiple different installation structures to fix the flue pipe for different diameters, thus reducing the complexity of installing balanced gas water heaters outdoors.

[0039] In one embodiment, along the vertical direction of the housing 1, the exhaust chamber 101 is located above the air inlet chamber 102; the partition 2 is provided with a flue gas passage 105 located in the air inlet chamber 102, the flue gas passage 105 has a flue gas inlet and a flue gas outlet, the flue gas inlet is adapted to communicate with the exhaust port of the equipment body 3 of the balanced gas water heater, and the flue gas outlet is connected to the exhaust port 201.

[0040] like Figure 9 The illustrated separate balanced flue gas water heater has its mounting port and flue gas inlet 201 offset. A downward-extending flue gas passage 105 is provided at the flue gas inlet 201 of the partition 2. The flue gas inlet of the flue gas passage 105 extends to connect with the flue gas outlet of the balanced flue gas water heater, and the flue gas outlet of the flue gas passage 105 coincides with the flue gas inlet 201 on the partition 2. This is because the exhaust chamber 101 is located at the top. To achieve complete isolation between the exhaust chamber 101 and the air inlet chamber 102, the flue gas outlet of the balanced flue gas water heater located further down needs to be sealed to the flue gas inlet of the exhaust chamber 101 through an additional flue gas passage 105. However, since the air inlet chamber 102 is located at the bottom and directly contacts the balanced flue gas water heater, no additional air passage is needed. Air can enter the air inlet chamber 102 and directly enter the interior through the mounting port and the air inlet of the balanced flue gas water heater. Of course, a separate air passage can also be provided; no specific restrictions are made here.

[0041] like Figure 10 The coaxial balanced gas water heater shown has its installation port and flue gas inlet 201 coaxially arranged, and the inner diameter of the installation port is larger than the inner diameter of the flue gas inlet 201, so as to form an air passage between the flue gas passage 105 and the installation port.

[0042] In one embodiment, the baffle 4 is rotatably connected to the partition 2.

[0043] like Figures 4 to 6 As shown, the baffle 4 is rotatably connected to the partition 2 via a shaft, so that it can be fully opened by rotation. Figure 4 ) or partially open ( Figure 5 The flue gas inlet 201 on the baffle 2 changes the flue gas flow area. When the flue gas discharge decreases, since the internal pressure of the balanced gas water heater is constant, the amount of air or gas entering should be reduced accordingly to ensure safe operation. This achieves the purpose of adjusting the flue gas flow area and thus adjusting the air and gas intake ratio to ensure that the balanced gas water heater is always in the best combustion state.

[0044] In one embodiment not shown, the baffle 4 may also be slidably connected to the partition 2. A pair of slide rails are provided on both sides of the smoke inlet 201. The baffle 4 is provided with a slider that is slidably connected to the slide rails. The slider slides along the slide rails to partially cover the smoke inlet 201.

[0045] In one embodiment, a limiting structure 6 is also included. One end of the baffle 4 is rotatably connected to the partition 2, and the other end of the baffle 4 is provided with an elastic locking part 401. The limiting structure 6 is fixed on the partition 2. The limiting structure 6 is a guide rail with multiple limiting grooves 601. The multiple limiting grooves 601 are distributed on the rotation path of the baffle 4. The elastic locking part 401 is locked and fixed with any of the limiting grooves 601.

[0046] The elastic locking part 401 is made of a material with elastic deformation, which is intended to make it easier to adjust the elastic locking part 401 to be locked and fixed with any of the limiting grooves 601.

[0047] like Figure 2 and Figure 3 As shown, since the smoke inlet 201 is usually circular, the baffle 4 is set as a semi-circle with a diameter slightly larger than that of the smoke inlet 201 to ensure that this part of the smoke inlet 201 can be blocked when rotated to the predetermined position. Of course, the baffle 4 can also be circular, rectangular, etc., as long as it can partially cover the smoke inlet 201 during rotation. No specific restrictions are made here. The limiting structure 6 is a quarter-circular arc plate with a curvature greater than that of the smoke inlet 201. It is located on one side of the smoke inlet 201. Multiple limiting grooves 601 are integrally formed on the side of the arc plate facing the partition 2, spaced apart along the curvature direction. The two ends of the arc plate are fixed to the partition 2 by bolts or other fasteners. Figure 7 As shown, the end of the baffle 4 connected to the arc plate is provided with a connecting plate with the same curvature as the arc plate. The elastic locking part 401 is formed at the end of the connecting plate and is a pointed protrusion. Under the action of external force, the pointed protrusion can be inserted into the limiting groove 601 or disengaged from the limiting groove 601 through deformation.

[0048] In one embodiment, the other end of the baffle 4 is also provided with a force-applying part 402.

[0049] like Figure 2 As shown, the force-applying part 402 is a cylinder extending upward perpendicular to the semi-circular plate, and is disposed adjacent to the elastic locking part 401 to facilitate manual gripping of the operating baffle 4. Of course, the force-applying part 402 can also be disposed in other positions on the baffle 4, and can also take other forms; no specific limitations are made here.

[0050] In one embodiment, both the exhaust port 104 and the air inlet 103 are provided with a rainproof structure 5. The rainproof structure 5 includes a mounting frame 501 adapted to the exhaust port 104 and the air inlet 103, and a plurality of inclined plates 502 spaced apart in the mounting frame 501 in the vertical direction. The inclined plates 502 are inclined downward from the inside to the outside.

[0051] like Figure 11 and Figure 12As shown, each exhaust port 104 and air inlet 103 is equipped with a rainproof structure 5 to ensure that rainwater will not flow into the fume hood assembly regardless of the direction of the rain, thereby ensuring the normal operation of the balanced gas water heater.

[0052] In one embodiment, the air inlet 103 and the smoke outlet 104 are respectively located on different side walls of the housing 1.

[0053] like Figure 1 As shown, each long sidewall of the upper housing 1 has two exhaust ports 104, and each short sidewall of the lower housing 1 has an air inlet 103. This allows air and flue gas to enter and exit from different sidewalls of the housing 1, avoiding mutual interference during flow. Since both the exhaust ports 104 and air inlets 103 are rectangular, the mounting frame 501 is also rectangular, extending a certain length towards the interior of the housing 1. The inclined plate 502 is angled from the inside out. Figure 11 and Figure 12 As shown, since the rainwater drips from top to bottom, when it falls onto the inclined plate 502, it will automatically slide off under the action of gravity, thus significantly improving the rain-blocking effect.

[0054] In one embodiment, the housing 1 includes an upper housing 11 and a lower housing 12. The upper housing 11 and the partition 2 enclose a smoke exhaust chamber 101, and the lower housing 12 and the partition 2 enclose an air intake chamber 102. The opening of the upper housing 11 is sealed to the lower housing 12 through a sealing structure 202.

[0055] like Figure 1 As shown, the partition 2 is provided with a sealing structure 202 facing the outer periphery of the smoke exhaust chamber 101, which can effectively reduce the possibility of rainwater seeping into the interior of the shell 1 when it drips.

[0056] In one embodiment, the sealing structure 202 is an annular rib integrally formed with the partition 2.

[0057] The annular rib design reduces the need for additional sealing gaskets, decreases process steps, and lowers costs. Of course, the sealing structure 202 can be a standard rubber ring; no specific restrictions are imposed here.

[0058] According to an embodiment of the present invention, another aspect provides a balanced gas-fired water heater, including a device body 3 and the aforementioned fume hood assembly, wherein the air inlet of the device body 3 is connected to the air inlet chamber 102, and the smoke outlet of the device body is connected to the smoke exhaust chamber 101.

[0059] The flue gas connector 301 is provided at the flue gas outlet of the equipment body 3 of the balanced gas water heater, and an air connector 302 is provided at the position corresponding to the installation port of the equipment body 3 of the balanced gas water heater. The flue gas connector 301 is connected to the flue gas inlet 201, and the air connector 302 is connected to the installation port.

[0060] like Figure 8 As shown, the fume hood assembly is installed on top of the equipment body 3 of the balanced flue gas water heater. The flue gas connector 301 and air connector 302 are also located on top of the equipment body 3. The outer shell of the equipment body 3 has good sealing properties, effectively preventing rainwater from seeping into the interior of the unit. The connections between the flue gas connector 301 and air connector 302 and the top of the equipment body 3 are also sealed.

[0061] Compared with the prior art, the balanced gas water heater of this utility model has the following advantages: When the fume hood assembly is installed on the body 3 of the balanced gas water heater, the housing 1 is fixedly connected to the top of the body 3 of the balanced gas water heater through the installation port. The inlet 201 on the partition 2 is connected to the outlet of the body 3 of the balanced gas water heater. The air inlet of the body 3 of the balanced gas water heater is located in the air inlet chamber. In this way, the flue gas generated when the body 3 of the balanced gas water heater is working can enter the exhaust chamber 101 through the outlet and inlet 201 in sequence, and finally be discharged through the exhaust port 104 on the side wall of the housing 1. Meanwhile, the outside air enters the body 3 of the balanced gas water heater in sequence through the air inlet 103, the air inlet chamber 102 and the air inlet on the side wall of the housing 1. This invention integrates the exhaust chamber 101 and the air inlet chamber 102 into the same housing 1. During installation, the housing 1 is fixedly connected to the top of the equipment body 3 of the balanced gas water heater via the mounting port. By connecting the smoke inlet 201 of the partition 2 to the smoke outlet of the equipment body 3, the air intake and exhaust of the balanced gas water heater can be made independent. Furthermore, due to the baffle plate on the smoke inlet of the partition, the flue gas flow area of ​​the smoke inlet can be adjusted according to the different exhaust resistance requirements of balanced gas water heaters with different rated power, thereby adjusting the exhaust resistance to meet the needs of normal equipment operation. Therefore, compared with the fixed installation of the flue pipe when the balanced gas water heater is installed outdoors, this invention eliminates the need for multiple different installation structures to fix the flue pipe for different diameters, thus reducing the complexity of installing the balanced gas water heater outdoors.

[0062] The flue gas produced by combustion inside the main body 3 of the balanced gas water heater flows out through the flue gas connector 301, enters the exhaust chamber 101 through the flue gas passage 105, and is finally discharged through the rainproof structure 5 at the exhaust port 104. At the same time, outdoor air enters the air intake chamber 102 through the rainproof structure 5 at the air inlet 103, and then enters the main body 3 of the balanced gas water heater through the air connector 302, where it enters the combustion chamber for combustion along with the gas.

[0063] When rain falls outdoors, the rainwater drips onto the fume hood assembly and the main body 3 of the balanced gas water heater. The inclined plate 502 on the rainproof structure 5 effectively prevents rainwater from dripping further into the housing 1, and the sealing structure 202 on the partition 2 further improves the rainproof effect. Since the rainproof structure 5 is spaced along the circumference of the fume hood assembly, the exhaust from the exhaust port 104 and the intake from the air inlet 103 are balanced during windy conditions, and are basically under the same pressure, thus achieving a good windproof effect.

[0064] When the power of the equipment body 3 of the balanced gas water heater changes, the position of the baffle 4 on the flue gas inlet 201 can be manually adjusted to adjust the flue gas flow area of ​​the flue gas inlet 201 so that it is in the optimal combustion state.

[0065] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0066] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fume hood assembly, applied to a balanced flue gas water heater, characterized in that: The device includes a housing (1), a partition (2), and a baffle (4). The partition (2) is located inside the housing (1) and divides the housing (1) into a smoke exhaust chamber (101) and an air inlet chamber (102). The partition (2) is provided with a smoke inlet (201) for communicating with the smoke outlet of the device body (3) of the balanced gas water heater. The side wall of the housing (1) is provided with an air inlet (103) and a smoke exhaust outlet (104). The bottom of the housing (1) is provided with an installation port. The air inlet (103) and the installation port are respectively connected to the air inlet chamber (102). The smoke inlet (201) and the smoke exhaust outlet (104) are respectively connected to the smoke exhaust chamber (101). The baffle (4) is located at the smoke inlet (201) and is movably connected to the partition (2) to adjust the flue gas flow area of ​​the smoke inlet (201).

2. The smoke hood assembly according to claim 1, characterized in that: Along the vertical direction of the housing (1), the exhaust chamber (101) is located above the air inlet chamber (102); the partition (2) is provided with a flue gas passage (105) located in the air inlet chamber (102), the flue gas passage (105) has a flue gas inlet and a flue gas outlet, the flue gas inlet is adapted to communicate with the exhaust port of the equipment body (3) of the balanced gas water heater, and the flue gas outlet is connected to the exhaust port (201).

3. The smoke hood assembly according to claim 1, characterized in that: The baffle (4) is rotatably connected to the partition (2).

4. The smoke hood assembly according to claim 3, characterized in that, It also includes a limiting structure (6), one end of the baffle (4) is rotatably connected to the partition (2), and the other end of the baffle (4) is provided with an elastic locking part (401). The limiting structure (6) is fixed on the partition (2). The limiting structure (6) is a guide rail with multiple limiting grooves (601). The multiple limiting grooves (601) are distributed on the rotation path of the baffle (4). The elastic locking part (401) is locked and fixed with any of the limiting grooves (601).

5. The smoke hood assembly according to claim 4, characterized in that, The other end of the baffle (4) is also provided with a force-applying part (402).

6. The fume hood assembly according to any one of claims 1 to 5, characterized in that, Both the exhaust port (104) and the air inlet (103) are provided with a rainproof structure (5). The rainproof structure (5) includes a mounting frame (501) adapted to the exhaust port (104) and the air inlet (103) and a plurality of inclined plates (502) spaced apart in the mounting frame (501) along the vertical direction. The inclined plates (502) are inclined downward from the inside to the outside.

7. The fume hood assembly according to any one of claims 1 to 5, characterized in that: The air inlet (103) and the smoke outlet (104) are respectively located on different side walls of the housing (1).

8. The smoke hood assembly according to any one of claims 1 to 5, characterized in that: The housing (1) includes an upper housing (11) and a lower housing (12). The upper housing (11) and the partition (2) enclose the smoke exhaust chamber (101), and the lower housing (12) and the partition (2) enclose the air intake chamber (102). The opening of the upper housing (11) is sealed to the lower housing (12) through a sealing structure (202).

9. The smoke hood assembly according to claim 8, characterized in that: The sealing structure (202) is an annular rib integrally formed with the partition (2).

10. A balanced gas-fired hot water device, characterized in that, The device includes a device body (3) and a smoke hood assembly according to any one of claims 1 to 9, wherein the air inlet of the device body (3) is connected to the air inlet chamber (102) and the smoke outlet of the device body (3) is connected to the smoke exhaust chamber (101).

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