Fan assembly, combustion heat exchange assembly and gas water heater

Abstract

The utility model relates to the technical field of household appliances, and discloses a fan assembly, which is used for drainage and exhaust in a combustion heat exchange assembly with a combustor and a heat exchange assembly, and comprises a smoke collecting shell, an air inlet, an exhaust passage, a fan, an air inlet, an air outlet and an air outlet, the top wall plate is crossed with the airflow inflow direction and is arranged on one side of the exhaust channel; the air inlet is simultaneously aligned and communicated with the exhaust channel and the top wall plate; the spoiler is arranged in the air inlet and the circulation port of the exhaust channel in a mode of being matched with the exhaust channel, and the spoiler is provided with a second area adjacent to the top wall plate and a first area adjacent to the second area; the second area is provided with a plurality of second turbulent flow holes for air to flow from the air inlet to the exhaust channel. The gas flow blocking degree of two gas paths in the smoke collecting shell can be adjusted, gas inlet balance is achieved, the overall combustion stability and heat efficiency of the gas water heater are improved, and noise and vibration generated by combustion of the gas water heater are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and in particular to a fan assembly, a combustion heat exchange assembly and a gas water heater. Background Art

[0002] Gas water heaters are currently the most convenient and economical devices for quickly heating water. They have high energy conversion efficiency and are more energy-efficient than electric water heaters. Existing exhaust-type gas water heaters usually adopt an upper extraction platform design, that is, the fan assembly is placed above the burner assembly, and the burner assembly and the fan assembly are connected through a heat exchange assembly. When working, the fan assembly generates negative pressure, so that the burner assembly can receive the gas and external oxygen delivered from the gas supply assembly (including the transport pipeline, gas distributor, etc.) and burn. The high-temperature flue gas after combustion flows out of the burner assembly under the suction of the fan assembly, flows through the heat exchange assembly and exchanges heat with the water to be heated, and finally flows to the fan assembly and is discharged.

[0003] During actual use, it was found that due to the overall space limitation, "the fan assembly needs to maintain the air inlet structure while setting a recess on its smoke collecting shell to make room for the fan installation", which makes the fan assembly have the problem of uneven drainage. Especially when the fan assembly is used in a combustion heat exchange assembly, it is easy to cause uneven heat exchange effect in the combustion heat exchange assembly. Utility Model Content

[0004] Based on the above problems, the utility model aims to provide a fan assembly, a combustion heat exchange assembly and a gas water heater to solve the above technical problems.

[0005] In order to achieve the above objectives, the following technical solutions are provided:

[0006] In the first aspect, the utility model provides a fan assembly, which is used for exhaust in a combustion heat exchange assembly having a burner and a heat exchange assembly. The fan assembly includes: a smoke collecting shell, which has an air inlet for gas to flow in, an exhaust passage connected to the fan and used for exhaust, and a top wall plate arranged on one side of the exhaust passage and intersecting with the inflow direction of the airflow; the air inlet is simultaneously connected to the exhaust passage and the top wall plate; a spoiler, which is adapted to the exhaust passage and is arranged in the flow port between the air inlet and the exhaust passage, the spoiler having a second area adjacent to the top wall plate, and a first area adjacent to the second area; the second area is provided with a plurality of second spoiler holes for gas to flow from the air inlet to the exhaust passage.

[0007] As a further improvement of the fan assembly provided by the utility model, the first region is provided with a first spoiler hole, and the aperture of the second spoiler hole is larger than the aperture of the first spoiler hole.

[0008] As a further improvement of the fan assembly provided by the utility model, the spoiler extends obliquely upward from the first area to form the second area.

[0009] As a further improvement of the fan assembly provided by the utility model, one end of the first area away from the second area is connected to the side wall of the air inlet.

[0010] As a further improvement of the fan assembly provided by the utility model, it also includes an adjusting mechanism, which is rotatably connected to the side wall of the smoke collecting shell, and the movable end of the adjusting mechanism is connected to the spoiler plate to drive the spoiler plate to flip relative to the top wall plate.

[0011] As a further improvement of the fan assembly provided by the utility model, the adjustment mechanism includes a movable shaft rotatably positioned at the air inlet, a rotating motor connected to the movable shaft and driving the movable shaft to rotate circumferentially, and one end of the second area away from the first area is connected to the movable shaft.

[0012] As a further improvement of the fan assembly provided by the utility model, it also includes a controller and a sensing mechanism for detecting the combustion condition of the burner, the input end of the controller is connected to the sensing mechanism, and the output end of the controller is connected to the rotating motor.

[0013] As a further improvement of the fan assembly provided by the utility model, the top wall plate is connected to one end of the exhaust channel to form a shoulder for the spoiler to longitudinally abut against, the adjustment mechanism includes a mounting shaft positioned at the air inlet, and a movable sleeve rotatably mounted on the mounting shaft, one end of the mounting shaft is provided with a threaded section with increasing diameter, the end of the threaded section with a smaller diameter is threadedly connected to the inner wall of the movable sleeve, and the spoiler is connected to the movable sleeve.

[0014] As a further improvement of the fan assembly provided by the utility model, the spoiler also includes a third end and a fourth end that are spaced apart and aligned, and the third end and the fourth end are bent and extended toward the air inlet to form a connecting portion, and the connecting portion can be slidably fitted to the side wall of the smoke collecting shell.

[0015] In a second aspect, the utility model also provides a combustion heat exchange component, including a fan component, a burner, and a heat exchange component as described above; and the air inlet of the fan component is connected to the exhaust port of the burner through the heat exchange component.

[0016] In a second aspect, the utility model further provides a gas water heater, characterized in that it comprises the combustion heat exchange component as described above.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] By arranging the spoiler to adapt to the exhaust channel in the flow port from the air inlet to the exhaust channel, and providing a second spoiler hole in the second area of ​​the spoiler adjacent to the top wall plate, the degree of airflow obstruction of different gas paths in the smoke collecting shell is adjusted, so that the flow velocities of the two gas paths can be consistent under different combustion conditions, thereby achieving air intake balance. In particular, when the above-mentioned fan assembly is placed in a combustion heat exchange assembly and used for the gas formed after combustion of the burner in the combustion heat exchange assembly, the uniformity of the flow of the gas in the combustion heat exchange assembly can be improved, thereby optimizing the overall heat exchange effect.

[0019] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of an existing gas water heater;

[0022] Figure 2 is a cross-sectional schematic diagram of an existing fan assembly;

[0023] Figure 3 The structure of the fan assembly provided in this embodiment is schematically shown in FIG. Figure 1 ;

[0024] Figure 4 The structure of the fan assembly provided in this specific embodiment is schematically shown in FIG. Figure 2 ;

[0025] Figure 5 It is a schematic diagram of the structure of the spoiler and the adjustment mechanism;

[0026] Figure 6 This is a schematic diagram of the structure for installing the shaft.

[0027] In the figure:

[0028] 1. Fan assembly; 11. Smoke collecting shell; 12. Air inlet; 13. Fan; 14. Exhaust duct; 15. Top wall plate; 16. Spoiler; 161. First end; 162. Second end; 163. First area; 164. Second area; 165. First spoiler hole; 166. Second spoiler hole; 167. Third end; 168. Fourth end; 169. Connecting part; 17. Shoulder; 18. Adjustment mechanism; 181. Mounting shaft; 182. Movable sleeve; 183. Locking hole; 184. Threaded section; 185. Movable shaft; 19. Guide port; 2. Burner; 3. Heat exchange assembly. DETAILED DESCRIPTION

[0029] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The specific implementation of the utility model is:

[0033] A fan assembly 1, for example Figure 1As shown, it is mainly installed in the combustion and heat exchange component of the gas water heater, and is used to suck the high-temperature gas formed after the burner 2 in the combustion and heat exchange component is burned, and the sucked high-temperature gas is drained to the heat exchange component 3 to complete the heat exchange before being discharged.

[0034] refer to Figure 2 The fan assembly 1 includes a smoke collecting shell 11. Based on the space limitation of the fan assembly 1 as a whole, it is necessary to provide a depression on the smoke collecting shell 11 while maintaining the structure of the air inlet 12 to free up installation space for the fan 13 (or other required components). As a result, the smoke collecting shell 11 includes an air inlet 12 for gas to flow in, an exhaust duct 14 connected to the fan 13 and used for exhaust, and a top wall plate 15 arranged on one side of the exhaust duct 14 to intersect with the exhaust direction.

[0035] When the exhaust is upward from the combustion and heat exchange component, the top wall plate 15 is extended laterally and is located on the right side of the exhaust passage 14, and the fan 13 for providing suction to the exhaust passage 14 is placed above the top wall plate 15 (depending on actual needs, other required components can also be installed at the position of the fan 13, and the fan 13 can be placed elsewhere and connected to the exhaust passage 14 through a pipeline).

[0036] At this time, the air inlet 12 is connected to the exhaust passage 14 and the top wall plate 15 at the same time, wherein the air inlet 12 is connected to the top wall plate 15 at the same time, and the connection refers to a side surface of the top wall plate 15, such as the attached Figure 2 There is a passage between the lower end surface of the middle top wall plate 15 and the air inlet 12 for direct gas flow.

[0037] The following specifically introduces the reasons for the uneven drainage of the traditional fan assembly 1: under the suction action of the fan 13, the upwardly directed gas entering the air inlet 12 will be divided into two parts and enter the exhaust pipe of the fan 13 along two different airflow paths. The first airflow path is to flow to the part of the air inlet 12 opposite to the exhaust channel 14, and directly flow into the exhaust channel 14, and finally flow out of the exhaust pipe of the fan 13; the second airflow path is to flow to the part of the air inlet 12 opposite to the top wall plate 15, and after being blocked and changed direction by the top wall plate 15, it will flow into the exhaust channel 14, and finally flow out of the exhaust pipe of the fan 13. Through the above-mentioned first path, the gas can flow in and out smoothly; while through the above-mentioned second path, the introduced airflow will be blocked by the top wall plate 15, so that the speed of gas inflow is greatly slowed down, thereby causing the problem of uneven drainage in the fan assembly 1.

[0038] In particular, when the fan assembly 1 is applied to other systems or components, for example, the fan assembly 1 is used in the combustion heat exchange assembly of a gas water heater below, the uneven drainage problem of the fan assembly 1 itself can easily lead to the fan assembly 1 being unable to evenly drain the high-temperature gas formed after the combustion of the burner 2 in the combustion heat exchange assembly, thereby causing the high-temperature gas formed after the combustion of the burner 2 to be unable to flow evenly through the heat exchange assembly 3, thereby causing the problem of uneven heat exchange.

[0039] Compared with the prior art, the improvements of the present invention are:

[0040] Embodiment 1:

[0041] For example Figure 3 The fan assembly 1 is additionally provided with a spoiler plate 16 with spoiler holes to adjust the degree of airflow obstruction on the above-mentioned two gas drainage paths, so that the fan assembly 1 can ensure a uniform and balanced drainage state when the combustion heat exchange assembly is in different combustion conditions, thereby improving the versatility of the fan assembly 1.

[0042] Specifically, the spoiler 16 is adapted to the exhaust channel 14 and is arranged in the flow port between the air inlet 12 and the exhaust channel 14. The spoiler 16 includes a first end 161 and a second end 162 that are opposite to each other. The second end 162 has a second area 164 adjacent to the top wall plate 15. The first end 161 has a first area 163 adjacent to the second area 164 and away from the top wall plate 15. A plurality of second spoiler holes 166 are provided in the second area 164. The second spoiler holes 166 are used to allow gas to flow from the air inlet 12 to the exhaust channel 14.

[0043] In this way, the intake airflow originally flowing to the portion corresponding to the air inlet 12 and the exhaust passage 14 will, under the obstruction of the spoiler 16, flow along the surface of the spoiler 16 from the first area 163 through the second area 164 and enter the exhaust passage 14 through the second spoiler holes 166 on the second area 164, thereby reducing the flow rate of the intake airflow in the portion corresponding to the air inlet 12 and the exhaust passage 14 (the airflow flow condition of the first air path); and the intake airflow flowing to the portion corresponding to the air inlet 12 and the top wall plate 15 can, after passing through the obstruction of the top wall plate 15, directly flow into the exhaust passage 14 through the second spoiler holes 166 in the second area 164 on the spoiler 16 adjacent to the top wall plate 15, without being affected by excessive deceleration due to the spoiler 16, thereby being able to balance the uniformity of the overall air intake of the fan assembly 1.

[0044] At this time, the above-mentioned fan assembly 1 is applied to other systems or components. For example, the fan assembly 1 is used in the combustion heat exchange assembly of the gas water heater below. It can evenly guide the high-temperature gas formed after the combustion of the burner 2 in the combustion heat exchange assembly, so that the high-temperature gas formed after the combustion of the burner 2 can flow through the heat exchange assembly 3 more evenly, thereby optimizing the overall heat exchange effect.

[0045] At the same time, in order to increase the deceleration area, the second end 162 of the spoiler 16 is preferably connected to the side wall of the air inlet 12 .

[0046] In addition, it is preferred that the spoiler 16 starts from the first end 161 and extends obliquely upward to form the second end 162, and the second area 164 is located above the first area 163. The advantage of this is that the entire spoiler 16 can be obliquely opposite to the air inlet 12, thereby increasing the contact area between the spoiler 16 and the "intake airflow flowing to the part opposite to the air inlet 12 and the exhaust channel 14", and increasing the deceleration area of ​​the spoiler 16. In addition, since the spoiler 16 starts from the first end 161 and extends obliquely upward to form the second end 162, the second spoiler hole 166 can be obliquely opposite to the top wall plate 15, which is beneficial for the "intake airflow flowing to the part opposite to the air inlet 12 and the top wall plate 15" to pass through the second spoiler hole 166 more smoothly after being obstructed by the top wall plate 15.

[0047] Considering that when the combustion heat exchange component is in different combustion conditions, the intake volume and initial flow velocity of the air inlet 12 will change, the obstruction effect of the spoiler component and the top wall plate 15 on the airflow will also change nonlinearly with the change of the intake volume and the initial flow velocity of the airflow, thereby causing an imbalance in the degree of flow obstruction on the above two airflow paths, causing the problem of uneven drainage. In this regard, in order to prevent the intake balance achieved by the spoiler 16 from being broken due to the change of the combustion condition, another improvement of this specific embodiment is: for example Figure 3 , Figure 4 An adjusting mechanism 18 is additionally provided. The adjusting mechanism 18 is rotatably connected to the side wall of the smoke collecting shell 11 . The movable end of the adjusting mechanism 18 is connected to the spoiler 16 to drive the spoiler 16 to flip relative to the top wall plate 15 .

[0048] By adding an adjustment mechanism 18, the adjustment mechanism 18 drives the spoiler 16 to flip, and by changing the inclination angle of the spoiler 16, the airflow obstruction degree of the two air intake paths is dynamically adjusted, so that the fan assembly 1 can ensure a uniform and balanced drainage state when the combustion and heat exchange assembly is in different combustion conditions, thereby improving the versatility of the fan assembly 1.

[0049] refer to Figure 3 to Figure 6Specifically, the top wall plate 15 is combined with one end of the exhaust passage 14 to form a shoulder 17 for the spoiler 16 to longitudinally abut. The adjustment mechanism 18 includes a mounting shaft 181 and a movable sleeve 182. The mounting shaft 181 is positioned in the air inlet 12. The movable sleeve 182 is formed with a locking hole 183. The movable sleeve 182 is rotatably sleeved on the mounting shaft 181 through the locking hole 183. The first end 161 of the spoiler 16 is connected to the movable sleeve 182. One end of the locking hole 183 is provided with a thread. One end of the mounting shaft 181 is formed with a threaded section 184 with increasing diameter. The end of the threaded section 184 with a smaller diameter is screwed into the locking hole 183 and is threadedly connected to the locking hole 183.

[0050] The principle of the above technical solution is:

[0051] When the combustion heat exchange component is in a low-load working state, the amount of smoke and the initial gas flow rate generated by the burner 2 are small, and the degree of obstruction of the top wall plate 15 to the intake airflow is also small. At this time, the gravity on the spoiler 16 is greater than the force of the airflow on the spoiler 16, and the second end 162 of the spoiler 16 is downwardly abutted against the shoulder 17 of the top wall plate 15, forming an integrated structure with the top wall plate 15, and the "part of the intake airflow corresponding to the air inlet 12 and the exhaust channel 14" is blocked by the spoiler 16, and its flow rate is similar to the flow rate of the "part of the intake airflow corresponding to the air inlet 12 and the top wall plate 15" after being blocked by the top wall plate 15, and the airflows of the two air paths eventually flow to the exhaust channel 14 through the second spoiler hole 166 in the second area 164.

[0052] When the workload of the combustion heat exchange component increases, the amount of smoke generated by the burner 2 and the initial gas flow rate increase, so that the first area 163, the second area 164 and the top wall plate 15 of the spoiler 16 also increase the degree of obstruction to the intake air flow in a nonlinear manner, so that the flow obstruction on the second airflow path is greater than the flow obstruction on the first airflow path. At this time, due to the increase in the initial flow rate, the force of the airflow on the spoiler 16 is greater than the gravity on the spoiler 16, so that the spoiler 16 is pushed upward, driving the spoiler 16 to connect the movable sleeve 182 to swing relative to the installation shaft 181, so that the threaded section 184 on the installation shaft 181 continues to Screw into the locking hole 183 of the movable sleeve 182, as the spoiler 16 flips, the threaded section 184 will gradually engage with the locking hole 183, thereby applying a reverse resistance torque to the movable sleeve 182, circumferentially limiting the spoiler 16, allowing the spoiler 16 to hover at a certain angle, and the second end 162 of the spoiler 16 will cooperate with the side wall of the exhaust channel 14 to form a guide port 19 for guiding flow, and the formed guide port 19 and the second spoiler hole 166 and the first area 163 of the spoiler 16 work together to adjust the flow resistance degree of the above-mentioned two airflow paths, so that the flow resistance degree of the two airflow paths is equal again, thereby achieving the uniformity of the overall air intake of the balanced fan assembly 1.

[0053] It should be noted that when the combustion heat exchange component changes from a high-load working state to a low-load working state, the airflow velocity decreases, and the spoiler 16 can be reset to abut against the shoulder 17 of the top wall plate 15 under the action of its own weight.

[0054] In this specific embodiment, both ends of the installation shaft 181 are passed through the smoke collecting shell 11, and the end of the installation shaft 181 away from the threaded section 184 is provided with a thread and is detachably connected to the smoke collecting shell 11 through a nut and a gasket. While facilitating assembly and maintenance, the nut can be removed to adjust the initial angle of the threaded section 184 on the installation shaft 181 screwed into the movable sleeve 182, thereby adjusting the maximum swing angle of the second plate body according to the preset maximum working load of the gas water heater, thereby improving the versatility of the product.

[0055] Furthermore, the spoiler 16 also includes a third end 167 and a fourth end 168 that are spaced apart from each other. The third end 167 and the fourth end 168 are bent and extended toward the air inlet 12 to form a connecting portion 169. The connecting portion 169 can slidably fit the side wall of the smoke collecting shell 11, thereby increasing the deceleration area of ​​the spoiler 16. At the same time, the connecting portion 169 slides and fits the side wall of the smoke collecting shell 11 to achieve horizontal limitation of the spoiler 16, so that the spoiler 16 can be flipped more smoothly, reducing the possibility of the spoiler 16 itself shaking due to the impact of airflow.

[0056] In the above embodiment 1, the adjustment mechanism 18 passively forms the guide port 19 by pushing the airflow to cooperate with the thread clamping, and the swing range of the second plate is limited. Only single-stage adjustment can be achieved without disassembling the adjustment installation shaft 181, and the versatility is insufficient. In view of this, the present specific implementation proposes a second embodiment based on the above embodiment 1.

[0057] Embodiment 2:

[0058] Compared with the first embodiment, the difference of this embodiment is that the adjustment mechanism 18 includes a movable shaft and a rotating motor, the movable shaft can be rotatably positioned in the communication port between the air inlet 12 and the exhaust channel 14, the first end 161 of the spoiler 16 is connected to the movable shaft, and the output end of the rotating motor is connected to the movable shaft, and can drive the movable shaft to rotate circumferentially relative to the smoke collecting shell 11. It should be noted that the drawings of this specification do not illustrate the above-mentioned second embodiment.

[0059] Compared with the second embodiment, the present embodiment adopts a rotating motor to replace the “airflow pushing and threaded clamping form” to drive the spoiler 16 to actively swing relative to the smoke collecting shell 11. When in use, the rotating motor can drive the spoiler 16 to rotate according to different workload conditions, adjust the relative position of the spoiler 16 and the top wall plate 15, make the spoiler 16 abut against the top wall plate 15, or increase or decrease the opening of the guide port 19 formed by the spoiler 16 and the top wall plate 15, so as to realize multi-stage adjustment of the degree of flow obstruction on the two airflow paths of the fan assembly 1 and enhance versatility.

[0060] It should be noted that, in order to prevent the air flow velocity entering the exhaust channel 14 from being too low, in the above two embodiments, a first spoiler hole 165 is provided in the first area 163 of the spoiler 16, and the aperture of the first spoiler hole 165 is larger than the aperture of the second spoiler hole 166. The first spoiler hole 165 plays a role in assisting exhaust and enhancing the ventilation efficiency of the spoiler 16.

[0061] The second specific implementation of the utility model is:

[0062] A combustion heat exchange component, which specifically includes the fan component 1 in the first preferred embodiment, and also includes a burner 2 and a heat exchange component 3. When the combustion heat exchange component is in different combustion conditions, the adjustment mechanism 18 in the fan component 1 can drive the spoiler 16 to flip, adjust the degree of airflow obstruction in the two airflow paths inside the fan component 1, dynamically adjust the airflow velocity, and achieve uniform drainage of the high-temperature gas formed after combustion of the burner 2, so that the high-temperature gas formed by the burner 2 under different working conditions can flow evenly through the heat exchange component 3, optimize the overall heat exchange effect, and have strong versatility.

[0063] When the present combustion and heat exchange component uses the fan component 1 of the above-mentioned second embodiment, the fan component 1 may also be additionally provided with a controller and a sensing mechanism, the input end of the controller is connected to the sensing mechanism, and the output end of the controller is connected to the regulating mechanism 18. Through the above-mentioned design, during the operation of the combustion and heat exchange component, the sensing mechanism can be used to feed back the combustion condition of the burner 2 to the controller, and the controller controls the regulating mechanism 18 to operate, adjust the flip angle of the spoiler 16, balance the intake air velocity of different parts of the air inlet 12, realize intelligent adjustment, and improve the user experience.

[0064] The third specific implementation mode of the present utility model:

[0065] A gas water heater specifically comprises the combustion heat exchange component in the second preferred embodiment.

[0066] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A fan assembly for exhausting air in a combustion and heat exchange assembly having a burner (2) and a heat exchange assembly (3), characterized in that: The fan assembly (1) comprises: A smoke collecting shell (11) having an air inlet (12) for gas to flow in, an exhaust passage (14) connected to a fan (13) and used for exhausting gas, and a top wall plate (15) arranged on one side of the exhaust passage (14) and intersecting with the inflow direction of the airflow; The air inlet (12) is simultaneously connected to the exhaust passage (14) and the top wall plate (15); a spoiler (16) adapted to the exhaust passage (14) and arranged in a flow port between the air inlet (12) and the exhaust passage (14), the spoiler (16) having a second area (164) adjacent to the top wall plate (15) and a first area (163) adjacent to the second area (164); The second region (164) is provided with a plurality of second flow-turbulating holes (166) for allowing gas to flow from the air inlet (12) to the exhaust channel (14).

2. The fan assembly according to claim 1, characterized in that: The first region (163) is provided with a first spoiler hole (165), and the aperture of the second spoiler hole (166) is larger than the aperture of the first spoiler hole (165).

3. The fan assembly according to claim 1, characterized in that: The spoiler (16) extends obliquely upward from the first area (163) to form the second area (164).

4. The fan assembly according to claim 1, characterized in that: One end of the first region (163) away from the second region (164) is connected to the side wall of the air inlet (12).

5. The fan assembly according to any one of claims 1 to 4, characterized in that: It also includes an adjusting mechanism (18), the adjusting mechanism (18) being rotatably connected to the side wall of the smoke collecting shell (11), and the movable end of the adjusting mechanism (18) being connected to the spoiler (16) for driving the spoiler (16) to flip relative to the top wall plate (15).

6. The fan assembly according to claim 5, characterized in that: The regulating mechanism (18) comprises a movable shaft rotatably positioned at the air inlet (12), and a rotary motor connected to the movable shaft and driving the movable shaft to rotate in a circumferential direction, and an end of the second area (164) away from the first area (163) is connected to the movable shaft.

7. The fan assembly according to claim 6, characterized in that: It also comprises a controller and a sensing mechanism for detecting the combustion condition of the burner (2), wherein the input end of the controller is connected to the sensing mechanism, and the output end of the controller is connected to the rotating motor.

8. The fan assembly according to claim 5, characterized in that: The top wall plate (15) is connected to one end of the exhaust passage (14) to form a shoulder (17) for the spoiler (16) to longitudinally abut against. The adjustment mechanism (18) comprises a mounting shaft (181) positioned at the air inlet (12) and a movable sleeve (182) rotatably sleeved on the mounting shaft (181). A threaded section (184) with increasing diameter is provided at one end of the mounting shaft (181). The end of the threaded section (184) with a smaller diameter is threadedly connected to the inner wall of the movable sleeve (182). The spoiler (16) is connected to the movable sleeve (182).

9. The fan assembly according to claim 8, characterized in that: The spoiler (16) further comprises a third end (167) and a fourth end (168) which are spaced apart from each other, and the third end (167) and the fourth end (168) are bent and extended toward the air inlet (12) to form a connecting portion (169), and the connecting portion (169) can be slidably fitted to the side wall of the smoke collecting shell (11).

10. The fan assembly according to claim 8, characterized in that: Both ends of the installation shaft (181) are inserted into the smoke collecting shell (11); one end of the installation shaft (181) away from the threaded section (184) is provided with threads and is detachably connected to the smoke collecting shell (11) via a nut.

11. A combustion heat exchange component, characterized in that: include: A fan assembly (1), a burner (2), and a heat exchange assembly (3) as described in any one of claims 1 to 10; wherein the air inlet (12) of the fan assembly (1) is connected to the exhaust port of the burner (2) through the heat exchange assembly (3).

12. A gas water heater, characterized in that: It comprises the combustion heat exchange assembly as claimed in claim 11.

Images