Fan assembly and range hood

Abstract

This application provides a fan assembly and a range hood. The fan assembly includes: a fan housing having a first chamber and a second chamber; a first fan disposed in the first chamber, the first fan having a first side shell and a second side shell facing away from each other, the first side shell having a first main air inlet and the second side shell having a first secondary air inlet; a second fan disposed in the second chamber and used to draw oil fumes from the second chamber and discharge them to the first chamber; and a guide plate disposed in the first chamber, the guide plate including an arc plate body and a diverting rib, the arc plate body extending in an arc shape relative to the first fan, the diverting rib being connected to the arc plate body and protruding from the inner curved side of the arc plate body, the diverting rib being projected onto the first fan between the first side shell and the second side shell.

Description

Technical Field

[0001] This application belongs to the field of range hood technology, specifically relating to a fan assembly and a range hood. Background Technology

[0002] In related technologies, range hoods use fans with dual air inlets to enhance suction and exhaust capabilities. However, when this type of fan is running, if the air volume distribution between the two air inlets is not properly adjusted, it can easily cause airflow turbulence, resulting in the fan's exhaust performance not being fully utilized and affecting the actual suction and exhaust effect. Summary of the Invention

[0003] This application provides a fan assembly and a range hood, including but not limited to mitigating or resolving the problem of uneven airflow distribution between the two air inlets of a dual-inlet fan.

[0004] The technical solution adopted in the embodiments of this application is: In a first aspect, this application provides a wind turbine assembly, the wind turbine assembly comprising: A fan housing, the fan housing having a first chamber and a second chamber; A first fan is located in the first chamber. The first fan has a first side shell and a second side shell that are opposite to each other. The first side shell is provided with a first main air inlet, and the second side shell is provided with a first secondary air inlet. A second fan, located in the second chamber, is used to draw in oil fumes from the second chamber and discharge them into the first chamber; and A flow guide plate is disposed in the first chamber. The flow guide plate includes an arc plate body and a flow divider. The arc plate body extends in an arc shape relative to the first fan. The flow divider is connected to the arc plate body and protrudes from the inner curved side of the arc plate body. The orthographic projection of the flow divider on the first fan is located between the first side shell and the second side shell.

[0005] The fan box has a first sidewall spaced relative to the first main air inlet and a second sidewall spaced relative to the first air inlet. The distance L1 from the first main air inlet to the first sidewall and the distance L2 from the first air inlet to the second sidewall satisfy the following relationship: L1 > L2.

[0006] The distance L1 from the first main air inlet to the first side wall and the distance L2 from the first air inlet to the second side wall also satisfy the following relationship: L2 / L1=0.5±0.2.

[0007] The fan box has a first sidewall spaced relative to the first main air inlet and a second sidewall spaced relative to the first air inlet. The arc plate has a first side and a second side facing away from each other. The first side is connected to the first sidewall, and the second side is connected to the second sidewall. The diverting rib is located between the first side and the second side, and the distance d1 from the diverting rib to the first side and the distance d2 from the diverting rib to the second side satisfy the following relationship: d1 > d2.

[0008] The distance d1 from the diversion rib to the first side and the distance d2 from the diversion rib to the second side also satisfy the following relationship: d1 / d2=1.5±0.3.

[0009] The diversion rib includes a first diversion section and a second diversion section. Both the first diversion section and the second diversion section are connected to the arc plate body and are inclined relative to the arc plate body. The end of the first diversion section away from the arc plate body is connected to the end of the second diversion section away from the arc plate body.

[0010] The second fan has a second main air inlet and a second air inlet, which are located on both sides of the second fan.

[0011] The fan box has a second sidewall spaced relative to the second main air inlet and a first sidewall spaced relative to the second air inlet. The distance L3 from the second main air inlet to the second sidewall and the distance L4 from the second air inlet to the first sidewall satisfy the following relationship: L3 > L4.

[0012] The distance L3 from the second main air inlet to the second side wall and the distance L4 from the second air inlet to the first side wall satisfy the following relationship: L4 / L3=0.5±0.2.

[0013] Secondly, this application also provides a range hood, which includes a smoke collection component and the aforementioned fan component. The fan component is connected to the smoke collection component and has a smoke collection port. The fan component is used to draw in external oil fumes through the smoke collection port.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: In the fan assembly provided in this application, the guide plate has an arc-shaped body that bends towards the first fan, thus guiding the airflow from the second fan towards the first fan. A diversion rib protrudes from the arc-shaped body and is located on the inner curved side of the arc-shaped body. Therefore, when the airflow discharged from the second fan flows through the arc-shaped body, the diversion rib can divide the airflow into two parts, effectively splitting the airflow. Simultaneously, since the diversion rib's orthographic projection on the first fan is between the first and second side shells, after the airflow is split into two parts, one part flows towards the first main air inlet of the first fan, while the other part flows towards the first secondary air inlet. This allows for a more reasonable distribution of the airflow to the two inlets, reducing or eliminating airflow turbulence during the operation of the first fan. This improves the suction and exhaust performance of the first fan and reduces noise generated during operation. Furthermore, the diversion rib also enhances the overall strength of the guide plate and prevents it from twisting or deforming. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view of a wind turbine assembly provided in an embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the fan assembly provided in an embodiment of this application, hidden behind the second side wall of the fan housing.

[0018] Figure 3 This is a schematic diagram of the fan assembly provided in an embodiment of this application, behind the first side wall of the hidden fan box.

[0019] Figure 4 This is a schematic diagram of the guide plate provided in an embodiment of this application.

[0020] Figure 5 for Figure 4 The guide vane shown is viewed from direction A.

[0021] Figure 6 for Figure 5 The guide vane shown is a cross-sectional view at the BB line.

[0022] Figure 7 for Figure 2 The enlarged view of the wind turbine assembly shown in region C.

[0023] Figure 8 for Figure 1 The diagram shows the fan assembly behind the second side wall of the hidden fan housing.

[0024] Figure 9 for Figure 1 The wind turbine assembly shown is a top view with the components above the first wind turbine hidden.

[0025] Figure 10 for Figure 9 The diagram shows the fan assembly after the guide vanes and partitions have been concealed.

[0026] Figure 11 This is an assembly drawing of a range hood provided in an embodiment of this application.

[0027] Figure 12 for Figure 11 The diagram shown is an exploded view of the range hood.

[0028] Explanation of key figure labels: Fan assembly 10; Fan box 11; First chamber 111; Second chamber 112; First side wall 113; Second side wall 114; First fan 12; First side shell 121; Second side shell 122; First main air inlet 123; First air inlet 124; Second fan 13; Second main air inlet 131; Second air inlet 132; Inner wall surface of second fan outlet 133; Guide plate 14; Arc plate body 141; First side 1411; Second side 1412 starting end 1413; Ending end 1414; Diverting rib 142; First diverting section 1421; Second diverting section 1422; Straight plate body 143; First guide surface 1431; Partition plate 15; Opening 151; Smoke collection assembly 20; smoke collection port 21; filter element 22. Detailed Implementation

[0029] 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.

[0030] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0031] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0032] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0034] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0035] Please refer to Figures 1 to 5 This application provides a fan assembly 10, which includes: a fan box 11, a first fan 12, a second fan 13, and a guide plate 14.

[0036] See Figure 2 , Figure 3 The fan housing 11 has a first chamber 111 and a second chamber 112. The first fan 12 is disposed in the first chamber 111, and the first fan 12 has a first side shell 121 facing away from it (see...). Figure 3 ) and the second side shell 122 (see Figure 2 The first side shell 121 is provided with a first main air inlet 123, and the second side shell 122 is provided with a first air inlet 124. The second fan 13 is provided in the second chamber 112 and is used to draw oil fumes from the second chamber 112 and discharge them to the first chamber 111.

[0037] See Figure 4 , Figure 5The guide plate 14 is disposed in the first chamber 111. The guide plate 14 includes an arc plate body 141 and a flow divider 142. The arc plate body 141 extends in an arc shape facing the first fan 12. The flow divider 142 is connected to the arc plate body 141 and protrudes from the inner curved side of the arc plate body 141. The projection of the flow divider 142 on the first fan 12 is located between the first side shell 121 and the second side shell 122.

[0038] Specifically, the material of the fan box 11 can be, but is not limited to, metal (such as stainless steel), composite materials, plastics, etc., and its general shape can be, but is not limited to, square, round, etc. This application illustrates a square shape. The fan box 11 is used to house two fans, the first fan 12 and the second fan 13. When the fans are working, negative pressure is generated inside the fan box 11, thereby forming a flowing airflow.

[0039] The first fan 12 and the second fan 13 are the core power components of the fan assembly 10. Their function is to generate negative pressure, draw in oil fumes, provide power, and exhaust waste gas. Each fan has an air inlet and an air outlet. When the fan is working, its air inlet draws in oil fumes, and then the air outlet discharges the oil fumes. Specifically, the second fan 13 is used to draw air from the second chamber 112 and discharge it into the first chamber 111, while the first fan 12 is used to draw air from the first chamber 111 and discharge it into the first chamber 111. The first fan 12 has two air inlets: a first main air inlet 123 and a first secondary air inlet 124. The two air inlets are located on both sides of the first fan 12 and are both used for drawing in air. The area S1 of the first main air inlet 123 is larger than the area S2 of the first secondary air inlet 124.

[0040] Regarding the layout of the fans, the first fan 12 and the second fan 13 can be installed in various configurations, including upright, reverse, and vertical installation. Upright installation means that the front of the first fan 12 faces the same direction as the front of the second fan 13. Similarly, reverse installation means that the front of the first fan 12 faces the opposite direction to the front of the second fan 13 (e.g., ...). Figure 2 and Figure 3 (As shown). Vertical installation means that the axis of the first fan 12 is exactly perpendicular to the axis of the second fan 13, where the axis refers to the center line around which the fan impellers rotate. Of course, the first fan 12 and the second fan 13 can also be installed in other ways, which will not be listed here.

[0041] Regarding the layout of the chambers, the first chamber 111 and the second chamber 112 can be arranged roughly vertically, roughly horizontally, or roughly front-to-back. This application only illustrates the vertical arrangement (e.g., Figure 2 and Figure 3 (As shown). The fan assembly 10 may also include a partition plate 15 (see... Figure 2 and Figure 3 The partition plate 15 is provided inside the fan box 11 to divide the internal space of the fan box 11 into a first chamber 111 and a second chamber 112. The partition plate 15 is provided with an opening 151, through which the air outlet of the first fan 12 is connected to the second chamber 112.

[0042] It should be noted that during the operation of the fan assembly 10, it can operate with a single fan (only the first fan 12 or the second fan 13 is activated) or with both fans (both the first fan 12 and the second fan 13 are activated simultaneously). With single-fan operation, there is only one stage of pressurization, resulting in slightly weaker smoke extraction; this is suitable for scenarios with less oil smoke, such as simmering, stewing, and steaming. With dual-fan operation, there are two stages of pressurization, resulting in stronger smoke extraction; this is suitable for scenarios with more oil smoke, such as stir-frying and deep-frying.

[0043] The guide vane 14 is installed in the first chamber 111 and is oriented towards the first fan 12. The guide vane 14 guides the airflow discharged from the second fan 13 and directs it to the first fan 12, so that the first fan 12 can stably and smoothly draw in and exhaust air. The guide vane 14 can be detachably connected to the fan housing 11, for example, by magnetic connection, bolt connection, snap-fit ​​connection, or other detachable connection methods. The detachable connection makes it easy for the guide vane 14 and the fan housing 11 to be manufactured independently, thereby reducing the difficulty of production and facilitating subsequent disassembly and maintenance.

[0044] The guide plate 14 has an arc plate body 141, which bends towards the first fan 12. The arc plate body 141 is used to guide the airflow from the second fan 13 towards the first fan 12. A diversion rib 142 protrudes from the arc plate body 141. The diversion rib 142 is a curved strip, and its extension direction is the same as the curvature of the arc plate body 141. Since the diversion rib 142 protrudes from the inner curved side of the arc plate body 141, when the airflow discharged from the second fan 13 flows through the arc plate body 141, the diversion rib 142 can divide the airflow into two parts, which is equivalent to splitting the airflow (hereinafter referred to as the wind-splitting effect). Meanwhile, since the orthographic projection of the diverter 142 on the first fan 12 is located between the first side shell 121 and the second side shell 122, the airflow is split into two parts by the diverter 142. One part of the airflow flows to the first main air inlet 123 of the first fan 12, while the other part flows to the first primary air inlet 124 of the first fan 12. In this way, the airflow volume of the two air inlets can be more rationally distributed, which weakens or eliminates the problem of airflow turbulence during the operation of the first fan 12. This allows the first fan 12 to better perform its suction and exhaust performance and also reduces the noise generated during the operation of the first fan 12. In addition, the diverter 142 can also improve the overall strength of the guide plate 14 and prevent the guide plate 14 from twisting and deforming.

[0045] Please refer to Figure 4 The guide plate 14 also includes a straight plate 143. One end of the straight plate 143 is located at the air outlet of the second fan 13, and the other end of the straight plate 143 is connected to the arc plate 141. By setting the straight plate 143, the air outlet of the second fan 13 can be better connected so that the airflow discharged by the second fan 13 can smoothly transition to the straight plate 143.

[0046] Please refer to Figure 4 The distance H between the end of the straight plate 143 adjacent to the second fan 13 and the end of the straight plate 143 away from the second fan 13, and the radius R of the arc plate 141, are given by the guide plate 14. The guide plate 14 satisfies the following relationship: H / R = 1 / 3 - 1 / 2, that is, the value of H / R is between 1 / 3 and 1 / 2. Specifically, the ratio of H / R can be 0.3333…, 0.35, 0.36, 0.39, 0.4, 0.43, 0.46, 0.5, etc. By limiting the value of H / R to 1.2 to 1.8, it can be ensured that the airflow discharged from the second fan 13 smoothly transitions to the straight plate 143, and then the arc plate 141 guides the airflow to the area where the first fan 12 is located.

[0047] Please refer to Figure 4The central angle α corresponding to the bending start point to bending end point of the arc plate 141 is denoted as α, and the arc plate 141 satisfies the following relationship: α = 80° - 85°. The specific value of the central angle α can be 80°, 80.5°, 81°, 81.2°, 82°, 82.5°, 83°, 83.5°, 84°, 85°, etc. By limiting the range of the central angle α to 80° to 85°, the arc plate 141 can stably and smoothly guide the airflow from the second fan 13 to the area where the first fan 12 is located.

[0048] Please refer to Figure 4 The angle between the straight plate 143 and the horizontal plane is β, and the straight plate 143 satisfies the following relationship: β = 80° - 85°. Wherein, the angle β is the angle formed between the straight plate 143 and the horizontal plane (ideal plane) when the fan assembly 10 is in its normal installation state. Specific values ​​for the angle β can be 80°, 80.5°, 81°, 81.2°, 82°, 82.5°, 83°, 83.5°, 84°, 85°, etc.

[0049] When the fan assembly 10 is in the normal installation state, since the inner wall surface 133 of the air outlet of the second fan 13 also has an angle of 80° to 85° with the horizontal plane, in this embodiment, the angle β is limited to 80° to 85°, which can ensure that the first guide surface 1431 of the straight plate 143 is flush with the inner wall surface, so that the airflow flowing through the inner wall surface can smoothly transition to the first guide surface 1431.

[0050] Please refer to Figure 5 The arc plate 141 has a starting end 1413 and a ending end 1414 in the arc-shaped extension direction. The arc plate 141 is used to guide the airflow from the starting end 1413 to the ending end 1414. The distance from the diverting rib 142 to the starting end 1413 is greater than the distance from the diverting rib 142 to the ending end 1414.

[0051] To illustrate from the opposite perspective, if the distance from the diverting rib 142 to the starting end 1413 is less than the distance from the diverting rib 142 to the ending end 1414, the airflow may be divided into two parts in the early stage during the flow guided by the guide plate 14, and then the two parts will merge again in the later stage, causing the required wind-cutting effect to fail. In this embodiment, the distance from the diverting rib 142 to the starting end 1413 is greater than the distance from the diverting rib 142 to the ending end 1414. With this setting, the airflow can be effectively divided into two parts when flowing out of the arc plate body 141, thereby ensuring that the airflow volume of the two air inlets is reasonably distributed. It should be noted that the diverting rib 142 can bend and extend to the ending end 1414 of the arc plate body 141, that is, the distance from the diverting rib 142 to the ending end 1414 is zero. Of course, in other embodiments, the distance from the diverting rib 142 to the ending end 1414 can also be greater than zero.

[0052] Please refer to Figure 6 The diversion rib 142 includes a first diversion part 1421 and a second diversion part 1422. The first diversion part 1421 and the second diversion part 1422 are both connected to the arc plate body 141 and are inclined relative to the arc plate body 141. The end of the first diversion part 1421 away from the arc plate body 141 is connected to the end of the second diversion part 1422 away from the arc plate body 141.

[0053] Specifically, the first diverter 1421 and the second diverter 1422 are inclined towards each other and connected, with their connection forming a sharp angle (the top of the diverter rib 142). In the direction from the sharp angle towards the arc plate 141, the distance between the first diverter 1421 and the second diverter 1422 gradually increases, reaching its maximum at the point where they connect to the arc plate 141 (the root of the diverter rib 142), thus forming a shape resembling the apex of a triangle. With this structure, the diverter rib 142 can cut into the airflow using its sharp angle, gradually breaking the airflow into two streams. Therefore, the structure provided in this embodiment facilitates the diverter rib 142 in achieving a wind-splitting effect.

[0054] Optionally, the arc plate 141 faces the first fan 12 and extends in an arc shape around a preset axis, which is parallel to a preset direction, where the preset direction is the arrangement direction of the first side shell 121 and the second side shell 122. This arrangement allows the arc plate 141 to face the first fan 12, thereby enabling the flow divider ribs 142 on the arc plate 141 to split the airflow from the second fan 13 into two airflows adapted to the two air inlets on the first fan 12, so that each air inlet receives an appropriate airflow. It should be noted that the preset axis is parallel to the preset direction; this parallelism can be absolute or approximately parallel. For approximately parallel cases, the angle formed by the preset axis and the preset direction can be within the range of 1° to 5°, for example, 1°, 2°, 3°, 4°, or 5°.

[0055] Please refer to Figure 7 The straight plate 143 has a first guiding surface 1431 for guiding airflow. The first guiding surface 1431 is flush with the inner wall surface 133 of the air outlet of the second fan 13. That is, the first guiding surface 1431 and the inner wall surface 133 are both planes and are in the same plane.

[0056] by Figure 8To illustrate this point by way, if the first guide surface 1431 is located to the left of the inner wall surface 133 (i.e., the guide plate 14 is moved to the left), a certain gap will exist between the first guide surface 1431 and the inner wall surface 133. When the airflow flows out from the inner wall surface 133, the airflow will diverge and become turbulent within this gap, which will be detrimental to the intake and exhaust of the first fan 12 and may also increase noise. Therefore, in this embodiment, the first guide surface 1431 and the inner wall surface 133 are flush, which can avoid the above-mentioned problems and make the airflow flowing through the inner wall surface 133 transition to the first guide surface 1431 more smoothly.

[0057] It should be noted that the phrase "the first guide surface 1431 and the inner wall surface 133 are flush" in this embodiment can mean absolutely flush (that is, the first guide surface 1431 and the inner wall surface 133 are completely in the same plane); of course, due to manufacturing or assembly errors, the above-mentioned flush can also mean approximately flush (that is, the first guide surface 1431 and the inner wall surface 133 have a small included angle, for example, the included angle is 1°, 2°, 3°, 4°, or 5°).

[0058] Optionally, the flow divider 142 and the arc plate 141 are an integral structure. That is, the flow divider 142 and the arc plate 141 are manufactured as a single piece, for example, by stamping. With an integral structure, the overall structural strength of the guide plate 14 is better, and there are no gaps at the connection between the flow divider 142 and the arc plate 141, which can avoid problems such as air leakage and noise.

[0059] Optionally, the flow divider 142 is detachably connected to the arc plate 141. That is, the flow divider 142 can be detached independently of the arc plate 141, for example, by using detachable connection methods such as magnetic attraction, bolt connection, or snap-fit ​​connection. This detachable connection allows the flow divider 142 and the arc plate 141 to be manufactured independently, thereby reducing production difficulty.

[0060] For further details, please refer to Figure 9 The fan box 11 has a first side wall 113 spaced relative to the first main air inlet 123 and a second side wall 114 spaced relative to the first air inlet 124. The first side wall 113 and the second side wall 114 are two opposing side walls constituting the first chamber 111. The distance L1 from the first main air inlet 123 to the first side wall 113 and the distance L2 from the first air inlet 124 to the second side wall 114 satisfy the following relationship: L1 > L2.

[0061] Since the area S1 of the first main air inlet 123 is larger than the area S2 of the first air inlet 124, the first main air inlet 123 can allow a larger air volume per unit time compared to the first air inlet 124. Therefore, setting the relationship between the first main air inlet 123 and the first air inlet 124 and their respective sidewalls as L1 > L2 makes the space between the first main air inlet 123 and the first sidewall 113 (hereinafter referred to as the first interval space) larger than the space between the first air inlet 124 and the second sidewall 114 (hereinafter referred to as the second interval space). Thus, the first interval space allows more air volume to pass through per unit time compared to the second interval space, thereby enabling the first main air inlet 123 to absorb more air volume than the first air inlet 124. This further rationally allocates the air volume of the two air inlets.

[0062] Furthermore, the distance L1 from the first main air inlet 123 to the first side wall 113 and the distance L2 from the first air inlet 124 to the second side wall 114 also satisfy the following relationship: L2 / L1 = 0.5 ± 0.2. That is, the range of L2 / L1 is 0.3 to 0.8, where the ratio of L2 / L1 can be 0.3, 0.33, 0.4, 0.42, 0.5, 0.58, 0.6, 0.65, 0.7, etc.

[0063] The area S1 of the first main air inlet 123 and the area S2 of the first air inlet 124 satisfy the following relationship: S2 / S1 = 0.5 ± 0.2, that is, the range of S2 / S1 is 0.3 to 0.8. Therefore, by limiting the ratio of L2 / L1 to 0.3 to 0.8, the air inlet areas S1 and S2 corresponding to the air intake volume of the first main air inlet 123 and the first air inlet 124 can be matched. This further rationally distributes the air intake volume of the two air inlets and also allows the suction and exhaust energy absorption of the first fan 12 to be fully utilized.

[0064] For further details, please refer to Figure 9 The fan box 11 has a first side wall 113 spaced relative to the first main air inlet 123 and a second side wall 114 spaced relative to the first air inlet 124. The first side wall 113 and the second side wall 114 are two opposing side walls constituting the first chamber 111. The arc plate body 141 has a first side 1411 and a second side 1412 facing away from each other. The first side 1411 is connected to the first side wall 113, and the second side 1412 is connected to the second side wall 114. The diversion rib 142 is located between the first side 1411 and the second side 1412, and the distance d1 from the diversion rib 142 to the first side 1411 and the distance d2 from the diversion rib 142 to the second side 1412 satisfy the following relationship: d1 > d2.

[0065] It is understandable that by limiting d1 to be greater than d2, it can be ensured that the air volume allocated to the space corresponding to d1 (i.e., the space between the diversion rib 142 and the first side wall 113) is greater than the air volume allocated to the space corresponding to d2 (i.e., the space between the diversion rib 142 and the second side wall 114). This allows the first main air inlet 123 facing the first side wall 113 to obtain more air volume than the first air inlet 124 facing the second side wall 114, thus further rationally allocating the air volume of the two air inlets.

[0066] Furthermore, the distance d1 from the diversion rib 142 to the first side 1411 and the distance d2 from the diversion rib 142 to the second side 1412 also satisfy the following relationship: d1 / d2 = 1.5 ± 0.3, that is, the range of d1 / d2 is 1.2 to 1.8. The ratio of d1 / d2 can be 1.2, 1.23, 1.3, 1.35, 1.4, 1.46, 1.5, 1.55, 1.6, 1.62, 1.7, 1.78, 1.8, etc.

[0067] By limiting the ratio of d1 / d2 to 1.2 to 1.8, the air volume of the first main air inlet 123 is greater than that of the first air inlet 124. This ensures that both air inlets are allocated an appropriate amount of air volume, thereby better utilizing the suction and exhaust performance of the second fan 13 and reducing the noise generated during the operation of the target fan.

[0068] Please combine Figure 2 , Figure 3 Reference Figure 10 The second fan 13 has a second main air inlet 131 and a second air inlet 132, which are located on opposite sides of the second fan 13. Both the second main air inlet 131 and the second air inlet 132 are used to extract fumes from the second chamber 112. The area S3 of the second main air inlet 131 is larger than the area S4 of the second air inlet 132, allowing for a larger airflow per unit time compared to the second air inlet 132.

[0069] The second fan 13 has two air inlets, one primary and one secondary, which allows it to draw in more fumes, making it more suitable for scenarios requiring high airflow, such as stir-frying and deep-frying. Furthermore, both the first fan 12 and the second fan 13 have two air inlets, ensuring a better match between their intake and exhaust volumes, thus maximizing their performance.

[0070] Optionally, the first fan 12 and the second fan 13 can be fans of the same specifications. "Same specifications" here means that the two fans are completely identical in core parameters such as model, size, rated power, speed, and air volume. Using fans of the same specifications makes it easier to synchronize their operation, avoids performance waste, and results in more orderly airflow organization, reducing turbulence and eddy noise. Furthermore, installation does not require differentiation, and maintenance and replacement are more convenient.

[0071] Please refer to Figure 10 The fan box 11 has a second side wall 114 spaced relative to the second main air inlet 131 and a first side wall 113 spaced relative to the second air inlet 132. The first side wall 113 and the second side wall 114 are two opposing side walls that constitute the second chamber 112. The distance L3 from the second main air inlet 131 to the second side wall 114 and the distance L4 from the second air inlet 132 to the first side wall 113 satisfy the following relationship: L3 > L4.

[0072] Since the area S3 of the second main air inlet 131 is larger than the area S4 of the second air inlet 132, the relationship between the second main air inlet 131 and the second air inlet 132 and their respective side walls is set as L3 > L4. This makes the space between the second main air inlet 131 and the second side wall 114 (hereinafter referred to as the third interval space) larger than the space between the second air inlet 132 and the first side wall 113 (hereinafter referred to as the fourth interval space). Therefore, the third interval space allows more airflow to pass through per unit time compared to the fourth interval space, which in turn allows the second main air inlet 131 to absorb more airflow than the second air inlet 132. In this way, the airflow of the two air inlets is reasonably allocated.

[0073] Furthermore, the distance L3 from the second main air inlet 131 to the second side wall 114 and the distance L4 from the second air inlet 132 to the first side wall 113 satisfy the following relationship: L4 / L3 = 0.5 ± 0.2, that is, the range of L4 / L3 is 0.3 to 0.8. The ratio of L4 / L3 can be 0.3, 0.33, 0.4, 0.42, 0.5, 0.58, 0.6, 0.65, 0.7, etc.

[0074] The area S3 of the second main air inlet 131 and the area S4 of the second air inlet 132 satisfy the following relationship: S4 / S3 = 0.5 ± 0.2, that is, the range of S4 / S3 is 0.3 to 0.8. Therefore, by limiting the ratio of L4 / L3 to 0.3 to 0.8, the air inlet areas S3 and S4 corresponding to the air intake volume of the second main air inlet 131 and the second air inlet 132 can be matched. This further rationally distributes the air intake volume of the two air inlets and also allows the suction and exhaust energy absorption of the second fan 13 to be fully utilized.

[0075] Please refer to Figure 11 and Figure 12 This application also provides a range hood, which includes a smoke collection assembly 20 and a fan assembly 10 as described in any of the above embodiments. The fan assembly 10 is connected to the smoke collection assembly 20 so that their internal spaces are connected. The fan assembly 10 has a smoke collection port 21 and is used to draw in external oil fumes through the smoke collection port 21.

[0076] When the range hood is working, the first fan 12 and / or the second fan 13 in the fan assembly 10 generate negative pressure. Under the action of negative pressure, the external oil fumes first pass through the smoke collection port 21 and enter the interior of the smoke collection assembly 20, and then enter the fan box 11 of the fan assembly 10, where they are guided out by the first fan 12 and / or the second fan 13.

[0077] The smoke collection assembly 20 can be equipped with a filter element 22, which is located at the smoke collection port 21. External oil fumes must pass through the filter element 22 before entering the interior of the smoke collection assembly 20. During the process of passing through the filter element 22, the filter element 22 will play a role in filtering and purifying the oil fumes.

[0078] Please refer to Figure 12 The second fan 13 of the fan assembly 10 is at least partially located within the smoke collection assembly 20, and the air inlet of the second fan 13 faces the smoke collection port 21. That is, at least a portion of the second fan 13 is exposed outside the fan housing 11, making its air inlet exposed. Orienting the air inlet of the second fan 13 towards the smoke collection port 21 shortens the distance of the fumes from the smoke collection port 21 to the air inlet of the second fan 13, allowing the fumes to be drawn in by the second fan 13 more quickly, thereby improving the efficiency of fume extraction.

[0079] The technical means disclosed in this application are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. A fan assembly, characterized in that, The wind turbine assembly includes: A fan housing, the fan housing having a first chamber and a second chamber; A first fan is located in the first chamber. The first fan has a first side shell and a second side shell that are opposite to each other. The first side shell is provided with a first main air inlet, and the second side shell is provided with a first secondary air inlet. A second fan, located in the second chamber, is used to draw in oil fumes from the second chamber and discharge them into the first chamber; and A flow guide plate is disposed in the first chamber. The flow guide plate includes an arc plate body and a flow divider. The arc plate body extends in an arc shape relative to the first fan. The flow divider is connected to the arc plate body and protrudes from the inner curved side of the arc plate body. The orthographic projection of the flow divider on the first fan is located between the first side shell and the second side shell.

2. The wind turbine assembly as described in claim 1, characterized in that, The fan box has a first sidewall spaced relative to the first main air inlet and a second sidewall spaced relative to the first air inlet. The distance L1 from the first main air inlet to the first sidewall and the distance L2 from the first air inlet to the second sidewall satisfy the following relationship: L1 > L2.

3. The wind turbine assembly as described in claim 2, characterized in that, The distance L1 from the first main air inlet to the first side wall and the distance L2 from the first air inlet to the second side wall also satisfy the following relationship: L2 / L1=0.5±0.

2.

4. The wind turbine assembly as described in claim 1, characterized in that, The fan box has a first sidewall spaced relative to the first main air inlet and a second sidewall spaced relative to the first air inlet. The arc plate has a first side and a second side opposite to each other. The first side is connected to the first sidewall, and the second side is connected to the second sidewall. The diverting rib is located between the first side and the second side, and the distance d1 from the diverting rib to the first side and the distance d2 from the diverting rib to the second side satisfy the following relationship: d1 > d2.

5. The wind turbine assembly as described in claim 4, characterized in that, The distance d1 from the diversion rib to the first side and the distance d2 from the diversion rib to the second side also satisfy the following relationship: d1 / d2=1.5±0.

3.

6. The wind turbine assembly as described in claim 1, characterized in that, The diversion rib includes a first diversion section and a second diversion section. Both the first diversion section and the second diversion section are connected to the arc plate body and are inclined relative to the arc plate body. The end of the first diversion section away from the arc plate body is connected to the end of the second diversion section away from the arc plate body.

7. The wind turbine assembly as described in claim 1, characterized in that, The second fan has a second main air inlet and a second air inlet, which are located on both sides of the second fan.

8. The wind turbine assembly as described in claim 7, characterized in that, The fan box has a second sidewall spaced relative to the second main air inlet and a first sidewall spaced relative to the second air inlet. The distance L3 from the second main air inlet to the second sidewall and the distance L4 from the second air inlet to the first sidewall satisfy the following relationship: L3 > L4.

9. The wind turbine assembly as described in claim 8, characterized in that, The distance L3 from the second main air inlet to the second side wall and the distance L4 from the second air inlet to the first side wall satisfy the following relationship: L4 / L3=0.5±0.

2.

10. A range hood, characterized in that, The range hood includes a smoke collection component and a fan component as described in any one of claims 1 to 9, wherein the fan component is connected to the smoke collection component, the fan component has a smoke collection port, and the fan component is used to draw in external oil fumes through the smoke collection port.

Images