Volute, fan and extractor hood

Abstract

The application discloses a volute, a fan and a range hood. The volute comprises a first end plate, a second end plate and a surrounding plate, the surrounding plate is arranged between the first end plate and the second end plate, the surrounding plate comprises a first surrounding plate and a second surrounding plate arranged along the axial direction of the volute, the first surrounding plate is provided with a first connecting portion extending along the circumferential direction thereof, the second surrounding plate is provided with a second connecting portion extending along the circumferential direction thereof, and the first connecting portion and the second connecting portion are overlapped and wound with each other. The first connecting portion extends along the circumferential direction of the first surrounding plate, the second connecting portion extends along the circumferential direction of the second surrounding plate, the first connecting portion and the second connecting portion are connected and fixed by being overlapped and wound with each other, so that, along the circumferential direction of the volute, the first connecting portion and the second connecting portion are matched to form continuous connecting points, which helps to improve the close connection effect of the first surrounding plate and the second surrounding plate, thereby inhibiting air leakage and condensate oil leakage.

Description

Technical Field

[0001] This application relates to the field of range hood technology, and in particular to a volute, a fan, and a range hood. Background Technology

[0002] Some range hoods use a two-part structure for the casing, which is assembled using screws. Due to the low strength and easy deformation of sheet metal, the connection between the two screws is not tight, which can lead to air leakage and condensate leakage in the middle. Utility Model Content

[0003] This application aims to at least partially solve one of the technical problems in the related art. To this end, this application proposes a volute.

[0004] To achieve the above objectives, this application discloses a volute, the volute comprising:

[0005] First end plate;

[0006] Second end plate; and

[0007] A surrounding plate is disposed between the first end plate and the second end plate. The surrounding plate includes a first surrounding plate and a second surrounding plate arranged along the axial direction of the volute. The first surrounding plate is provided with a first connecting portion extending in its circumference, and the second surrounding plate is provided with a second connecting portion extending in its circumference. The first connecting portion and the second connecting portion overlap and are wound around each other.

[0008] In some embodiments of this application, the first connecting portion and the second connecting portion are wound toward the side where one of the first enclosure plate and the second enclosure plate is located to form a rolled edge structure, and the rolled edge structure is welded to one of the first enclosure plate and the second enclosure plate.

[0009] In some embodiments of this application, the rolled edge structure is welded to one of the first enclosure and the second enclosure to form a weld point, and the number of weld points is multiple, with the multiple weld points arranged alternately along the circumference of the enclosure.

[0010] In some embodiments of this application, the volute further includes a volute tongue that is a separate component relative to the surrounding plate. The surrounding plate includes a volute tongue mounting section, at least a portion of which is bent. The volute tongue is mounted on the inner side of the volute tongue mounting section, and the volute tongue mounting section is provided with the weld point.

[0011] In some embodiments of this application, the weld point is provided at the location of the maximum curvature of the volute tongue mounting segment;

[0012] And / or, the minimum radius of curvature of the volute tongue mounting section is not less than 10 mm.

[0013] In some embodiments of this application, the volute has an air outlet, the volute tongue mounting section is located on one side of the air outlet, and the minimum distance between the end of the rolled edge structure located on the other side of the air outlet and the nearest weld point is no greater than 20mm.

[0014] In some embodiments of this application, a rectangular coordinate system is defined, wherein the X-axis and Y-axis of the rectangular coordinate system pass through the center point of the volute, the volute tongue mounting section and the air outlet of the volute are located in the first quadrant, and a first plane intersecting the enclosure plate is drawn in the first quadrant through the center point, a second plane and a third plane intersecting the enclosure plate in the fourth quadrant, a fourth plane and a fifth plane intersecting the enclosure plate in the third quadrant, and a sixth plane intersecting the enclosure plate in the second quadrant;

[0015] The first plane and the second plane are symmetrical about the X-axis and the angle formed by their intersection is no greater than 30°, and the solder joint is located within the angle range between the first plane and the second plane;

[0016] The third plane and the fourth plane are symmetrical about the Y-axis and intersect at an angle not greater than 30°, and the solder joint is located within the angle range between the third plane and the fourth plane;

[0017] The fifth plane and the sixth plane are symmetrical about the X-axis and intersect at an angle not greater than 30°, and the solder joint is located within the angle range between the fifth plane and the sixth plane.

[0018] In some embodiments of this application, the number of solder joints is no more than 8.

[0019] In some embodiments of this application, the first connecting portion and the second connecting portion are wound together to form a rolled edge structure, wherein the dimension of the rolled edge structure along the axial direction of the volute is not less than 4 mm.

[0020] In some embodiments of this application, the enclosure includes a volute tongue mounting section, the volute tongue mounting section includes a middle portion, a first side portion and a second side portion, the middle portion is disposed between the first side portion and the second side portion, the second side portion is closer to the air outlet of the volute shell relative to the first side portion, and the curvature of the middle portion is greater than the curvature of the first side portion and greater than the curvature of the second side portion.

[0021] The volute also includes a volute tongue, which is a separate component relative to the enclosure. The volute tongue is located inside the volute tongue mounting section and connected to the second side. A portion of the volute tongue extends toward the location of the first side to be spliced ​​with the volute tongue mounting section.

[0022] In some embodiments of this application, the volute tongue has an extended edge, the volute tongue extends toward the location of the first side portion through the extended edge, the volute tongue has a hollow structure, the volute tongue has a supporting rib located inside it, and the extended edge protrudes relative to the supporting rib.

[0023] In some embodiments of this application, the volute tongue has an extended edge, the volute tongue extends toward the location of the first side portion through the extended edge, the surface of the volute tongue facing the interior of the volute shell is provided with reinforcing ribs, the reinforcing ribs extend to the extended edge, and the reinforcing ribs extend along the airflow direction, and a plurality of the reinforcing ribs are arranged alternately along the axial direction of the volute shell.

[0024] In some embodiments of this application, the volute is adapted to house a wind turbine, the wind turbine including a first mounting plate, a second mounting plate, an intermediate mounting plate, and blades, the blades being mounted between the first and second mounting plates, the intermediate mounting plate being located between the first and second mounting plates and connected to the blades, the intermediate mounting plate being adapted to be connected to a motor, and the reinforcing ribs corresponding to the edges of the first, second, and intermediate mounting plates along the radial direction of the volute.

[0025] In some embodiments of this application, the second mounting plate is adapted for the motor to pass through, and the space between the first mounting plate and the intermediate mounting plate along the radial direction of the volute corresponds to the reinforcing rib.

[0026] In some embodiments of this application, the reinforcing ribs include four ribs, namely a first reinforcing rib, a second reinforcing rib, a third reinforcing rib, and a fourth reinforcing rib. Along the radial direction of the volute, the first reinforcing rib corresponds to the edge of the first mounting plate, the second reinforcing rib corresponds to the edge of the second mounting plate, the third reinforcing rib corresponds to the edge of the intermediate mounting plate, and the fourth reinforcing rib is disposed between the first reinforcing rib and the third reinforcing rib.

[0027] In some embodiments of this application, the first end plate and the first surrounding plate are integrally formed, and the second end plate and the second surrounding plate are integrally formed.

[0028] A second aspect of this application discloses a fan comprising the aforementioned volute.

[0029] A third aspect of this application discloses a range hood, which includes the aforementioned fan.

[0030] The first connecting part of the technical solution of this application extends along the circumference of the first enclosure plate, and the second connecting part extends along the circumference of the second enclosure plate. The connection and fixation are achieved by the first connecting part and the second connecting part overlapping and winding with each other. In this way, along the circumference of the volute, the first connecting part and the second connecting part cooperate with each other to form a continuous connection point, which helps to improve the tight connection effect of the first enclosure plate and the second enclosure plate, thereby suppressing air leakage and condensate oil leakage.

[0031] Other advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other designs can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 These are schematic diagrams of the fan in some embodiments;

[0034] Figure 2 This is another schematic diagram of the fan in some embodiments;

[0035] Figure 3 This is a third schematic diagram of the fan in some embodiments;

[0036] Figure 4 Here are exploded views of the fan in some embodiments;

[0037] Figure 5 Cross-sectional views of the fan in some embodiments;

[0038] Figure 6 This is a schematic diagram of the fourth fan in some embodiments;

[0039] Figure 7 This is a schematic diagram of the fifth fan in some embodiments;

[0040] Figure 8 This is a schematic diagram of the sixth fan in some embodiments;

[0041] Figure 9 Cross-sectional views of the fan in some embodiments;

[0042] Figure 10 This is a schematic diagram of the cooperation between the volute tongue and the impeller in some embodiments;

[0043] Figure 11 This is a schematic diagram of the cochlea in some embodiments;

[0044] Figure 12 This is another schematic diagram of the cochlear tongue in some embodiments;

[0045] Figure 13 This is a schematic diagram of the wind turbine in some embodiments.

[0046] Explanation of icon numbers:

[0047] 1000 volute, 1100 first end plate, 1200 second end plate, 1300 surrounding plate, 1310 first surrounding plate, 1320 second surrounding plate, 1330 first connecting part, 1340 second connecting part, 1350 rolled edge structure, 1360 volute tongue mounting section, 1361 first side part, 1362 second side part, 1363 middle part, 1370 weld point, 1400 volute tongue, 1410 support rib, 1420 extended edge, 1430 reinforcing rib, first reinforcing rib. Rib 1431, second reinforcing rib 1432, third reinforcing rib 1433, fourth reinforcing rib 1434, first plane 1510, second plane 1520, third plane 1530, fourth plane 1540, fifth plane 1550, sixth plane 1560, air inlet 1610, air outlet 1620, impeller 2000, first mounting plate 2100, second mounting plate 2200, middle mounting plate 2300, blades 2400, motor 3000.

[0048] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0050] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0051] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0053] The first aspect of this application discloses a volute 1000, which, in some embodiments, is combined with Figures 1 to 5 As shown, the volute 1000 includes a first end plate 1100, a second end plate 1200, and a surrounding plate 1300. The surrounding plate 1300 is disposed between the first end plate 1100 and the second end plate 1200. The surrounding plate 1300 includes a first surrounding plate 1310 and a second surrounding plate 1320 arranged along the axial direction of the volute 1000. The first surrounding plate 1310 is provided with a first connecting portion 1330 extending in its circumference, and the second surrounding plate 1320 is provided with a second connecting portion 1340 extending in its circumference. The first connecting portion 1330 and the second connecting portion 1340 overlap and are wound around each other.

[0054] In this embodiment, the first connecting portion 1330 extends circumferentially along the first enclosure 1310, and the second connecting portion 1340 extends circumferentially along the second enclosure 1320. The first connecting portion 1330 and the second connecting portion 1340 are connected and fixed by overlapping and winding each other. Thus, along the circumferential direction of the volute 1000, the first connecting portion 1330 and the second connecting portion 1340 cooperate to form a continuous connection point, which helps to improve the tight connection effect of the first enclosure 1310 and the second enclosure 1320, thereby suppressing air leakage and condensate oil leakage.

[0055] Referring to the description of the fan, the fan includes a volute 1000, a rotor 2000, and a motor 3000. The volute 1000 is a component for gas collection and energy conversion, used to house the rotor 2000. The volute 1000 includes a first end plate 1100 (also called a front plate or rear plate), a second end plate 1200 (also called a rear plate or front plate), and a surrounding plate 1300. The surrounding plate 1300 is disposed between the first end plate 1100 and the second end plate 1200. The surrounding plate 1300, together with the first end plate 1100 and the second end plate 1200, encloses a cavity for mounting the rotor 2000 and a cavity for the receiving cavity. The air outlet 1620 is connected. The first end plate 1100 is provided with an air inlet 1610, or the second end plate 1200 is provided with an air inlet 1610, or both the first end plate 1100 and the second end plate 1200 are provided with air inlets 1610. The impeller 2000 is connected to the motor 3000. The motor 3000 drives the impeller 2000 to rotate. When the impeller 2000 rotates, the airflow enters the interior of the volute 1000 from the air inlet 1610 and is discharged from the air outlet 1620 of the volute 1000.

[0056] In this embodiment, the enclosure 1300 includes a first enclosure 1310 and a second enclosure 1320 arranged along the axial direction of the volute 1000. The axial direction of the volute 1000 is the same as the axial direction of the impeller 2000, and the axial direction of the impeller 2000 is the extension direction of the rotation axis of the impeller 2000. In related technologies, the first enclosure 1310 and the second enclosure 1320 are assembled together by screws. However, the connection between adjacent screws is not tight, which can easily lead to air leakage and condensate oil leakage. Therefore, in this embodiment, the first enclosure 1310 is provided with a first connecting portion 1330 extending circumferentially thereafter, and the second enclosure 1320 is provided with a second connecting portion 1340 extending circumferentially thereafter. The first connecting part 1330 and the second connecting part 1340 overlap and roll together to form a rolled edge structure 1350, thereby connecting and fixing the first enclosure 1310 and the second enclosure 1320. Since the first connecting part 1330 extends along the circumference of the first enclosure 1310 and the second connecting part 1340 extends along the circumference of the second enclosure 1320, the first connecting part 1330 and the second connecting part 1340 cooperate with each other to form a continuous connection point in the circumference of the enclosure 1300. This effectively avoids the phenomenon of loose connection between adjacent screws in screw connection schemes, helps to improve the tight connection effect of the first enclosure 1310 and the second enclosure 1320, and suppresses air leakage and condensate oil leakage.

[0057] For example, the first enclosure 1310 and the first connecting part 1330 are integrally formed structures and made of metal, and the second enclosure 1320 and the second connecting part 1340 are integrally formed structures and made of metal. Metal has high ductility, which lays the foundation for winding. When the first enclosure 1310 and the second enclosure 1320 are assembled, the first connecting part 1330 and the second connecting part 1340 overlap each other, and the first connecting part 1330 and the second connecting part 1340 together wind towards the side where one of the first enclosure 1310 and the second enclosure 1320 is located. The first connecting part 1330 and the second connecting part 1340 interlock together to form a rolled edge structure 1350, thereby achieving connection and fixation.

[0058] In some embodiments, the first connecting portion 1330 and the second connecting portion 1340 are wound together to form a rolled edge structure 1350, the rolled edge structure 1350 having a dimension of not less than 4 mm along the axial direction of the volute 1000. Figure 5 The dimension of the rolled edge structure 1350 along the axial direction of the volute 1000 is w, which satisfies w≥4mm to ensure connection strength.

[0059] In some embodiments, the first end plate 1100 and the first surrounding plate 1310 are integrally formed, and the second end plate 1200 and the second surrounding plate 1320 are integrally formed.

[0060] The first end plate 1100 and the first surrounding plate 1310 are integrally formed into a single component, and the second end plate 1200 and the second surrounding plate 1320 are integrally formed into a single component. There is no need for connection operations between the first end plate 1100 and the first surrounding plate 1310, or between the second end plate 1200 and the second surrounding plate 1320. This not only reduces the number of components, but also reduces the number of connection operations during assembly. It also avoids gaps between the first end plate 1100 and the first surrounding plate 1310, and between the second end plate 1200 and the second surrounding plate 1320. The overall structural strength of the volute 1000 is also higher.

[0061] In some embodiments, combined with Figures 5 to 8 As shown, the first connecting portion 1330 and the second connecting portion 1340 are wound toward the side where one of the first enclosure plate 1310 and the second enclosure plate 1320 is located to form a rolled edge structure 1350, and the rolled edge structure 1350 is welded to one of the first enclosure plate 1310 and the second enclosure plate 1320.

[0062] It is understood that the enclosure 1300 is a curved structure as a whole. Therefore, the rolled edge structure 1350 formed by the cooperation of the first connecting part 1330 and the second connecting part 1340 is also a curved structure. The rolled edge structure 1350 has a certain extension length along the circumference of the enclosure 1300. In order to further ensure the structural strength, in this embodiment, the rolled edge structure 1350 also needs to be welded to the first enclosure 1310 or the second enclosure 1320, so as to enhance the structural stability.

[0063] For example, with the first enclosure 1310 above and the second enclosure 1320 below as a reference, the first connecting part 1330 and the second connecting part 1340 are overlapped and rolled downwards (i.e. rolled towards the side where the second enclosure 1320 is located). The rolled edge structure 1350 formed in this way is close to the second enclosure 1320 and can be tightly attached to the second enclosure 1320. Then, the rolled edge structure 1350 and the second enclosure 1320 are welded together to form a weld point 1370, which improves the connection stability and makes it less likely for the first connecting part 1330 and the second connecting part 1340 to come loose.

[0064] In some embodiments, combined with Figures 5 to 8 As shown, the rolled edge structure 1350 is welded to one of the first enclosure plate 1310 and the second enclosure plate 1320 to form a weld point 1370. There are multiple weld points 1370, which are arranged alternately along the circumference of the enclosure plate 1300.

[0065] As mentioned above, the rolled edge structure 1350 extends a certain length along the circumference of the surrounding plate 1300. Therefore, in this embodiment, the rolled edge structure 1350 is welded to one of the first surrounding plate 1310 and the second surrounding plate 1320 to form a weld point 1370. The number of weld points 1370 is multiple, meaning two or more (the same applies below). The multiple weld points 1370 are arranged alternately along the circumference of the surrounding plate 1300, thereby further improving the connection stability of the first surrounding plate 1310 and the second surrounding plate 1320. Optionally, the number of weld points 1370 is no more than 8 to ensure production efficiency.

[0066] In some embodiments, combined with Figure 4 , Figure 6 , Figure 8 and Figure 9 As shown, the volute 1000 also includes a volute tongue 1400, which is a separate component from the surrounding plate 1300. The surrounding plate 1300 includes a volute tongue mounting section 1360, at least a portion of which is bent. The volute tongue 1400 is mounted on the inner side of the volute tongue mounting section 1360, and the volute tongue mounting section 1360 is provided with a weld point 1370.

[0067] In related technologies, the bending of a portion of the enclosure plate forms a volute tongue, which typically has a large curvature. In this embodiment, the first enclosure plate 1310 and the second enclosure plate 1320 are connected and fixed by overlapping and winding with each other through the first connecting portion 1330 and the second connecting portion 1340. If a portion of the first enclosure plate 1310 and a portion of the second enclosure plate 1320 are bent to form a volute tongue, then the first connecting portion 1330 and the second connecting portion 1340 at the corresponding volute tongue position will be difficult to wind.

[0068] Therefore, in this embodiment, the volute tongue 1400 is a separate component from the surrounding plate 1300. A separate component means that the volute tongue 1400 is manufactured separately from the surrounding plate 1300, and the surrounding plate 1300 is manufactured separately from the volute tongue 1400. For example, the volute tongue 1400 is a component formed by injection molding. By setting the volute tongue 1400 as a separate component, the volute tongue 1400 is manufactured separately and then installed on the inner side of the volute tongue mounting section 1360 of the surrounding plate 1300. The inner side is the side facing the interior of the volute housing 1000, thereby forming an inner flow wall with the surrounding plate 1300.

[0069] It is understandable that the first enclosure plate 1310, corresponding to a portion of the volute tongue 1400, and the second enclosure plate 1320, corresponding to a portion of the volute tongue 1400, are combined to form the volute tongue mounting section 1360 through the winding of the first connecting portion 1330 and the second connecting portion 1340. Because of the separate design of the volute tongue 1400, the volute tongue mounting section 1360 does not need to have an excessively large curvature; it only needs to be conformed to the shape of the volute tongue 1400. This reduces the curvature of the volute tongue mounting section 1360, making it easier to wind the first connecting portion 1330 and the second connecting portion 1340 at this location, ensuring a tight connection between them. Since the volute tongue mounting section 1360 has a certain degree of curvature, a weld point 1370 is provided on it. That is, the rolled edge structure 1350 on the volute tongue mounting section 1360 is welded to the first enclosure plate 1310 or the second enclosure plate 1320 to ensure the stability of the connection.

[0070] Optionally, in some embodiments, a weld point 1370 is provided at the point of maximum curvature of the volute tongue mounting section 1360. Due to the tendency of the first connecting portion 1330 and the second connecting portion 1340 to be wound around the point of maximum curvature of the volute tongue mounting section 1360, poor edge sealing is likely to occur. Therefore, a weld point 1370 is provided at the point of maximum curvature of the volute tongue mounting section 1360, that is, the corresponding rolled edge structure 1350 is welded to the first enclosure plate 1310 or the second enclosure plate 1320.

[0071] Optionally, the minimum radius of curvature of the volute mounting section 1360 is not less than 10mm, which makes it easier to connect the first connecting part 1330 and the second connecting part 1340 at this position and avoids increasing the processing difficulty due to the small minimum radius of curvature.

[0072] In some embodiments, combined with Figures 6 to 8 As shown, the volute 1000 has an air outlet 1620, the volute tongue mounting section 1360 is located on one side of the air outlet 1620, and the minimum distance between the end of the rolled edge structure 1350 located on the other side of the air outlet 1620 and the nearest weld point 1370 is no more than 20mm.

[0073] The air outlet 1620 is the opening at the air outlet end of the volute 1000. The volute tongue mounting section 1360 is located on one side (A) of the air outlet 1620. It is understood that the volute tongue mounting section 1360 is close to the air outlet 1620. Since the volute tongue mounting section 1360 has a weld point 1370, the end (Ⅰ) of the rolled edge structure 1350 on one side of the air outlet 1620 and the weld point 1370 on the volute tongue mounting section 1360 are close together, thus ensuring the stability of the end of the rolled edge structure 1350 on one side of the air outlet 1620. On the other side (B) of the air outlet 1620, the minimum distance between the end (Ⅱ) of the rolled edge structure 1350 and the nearest weld point 1370 is no more than 20mm, thus ensuring the stability of the end of the rolled edge structure 1350 on the other side of the air outlet 1620.

[0074] In particular, when the winding process between the first connecting part 1330 and the second connecting part 1340 is from one side (A) of the air outlet 1620 along the circumference of the enclosure 1300 to the other side (B), the formed rolled edge structure 1350 gradually moves away from the center point of the volute 1000, which is prone to poor sealing due to error accumulation. By ensuring that the minimum distance between the end of the rolled edge structure 1350 located on the other side (B) of the air outlet 1620 and the nearest welding point 1370 is no more than 20mm, the stability of the rolled edge structure 1350 at this location is enhanced.

[0075] In some embodiments, combined with Figure 8 As shown, a rectangular coordinate system is defined, with the X-axis and Y-axis passing through the center point of the volute 1000. The volute tongue mounting section 1360 and the air outlet 1620 of the volute 1000 are located in the first quadrant. A first plane 1510 intersecting with the enclosure 1300 is drawn in the first quadrant through the center point, a second plane 1520 and a third plane 1530 intersecting with the enclosure 1300 in the fourth quadrant, a fourth plane 1540 and a fifth plane 1550 intersecting with the enclosure 1300 in the third quadrant, and a sixth plane 1560 intersecting with the enclosure 1300 in the second quadrant.

[0076] The first plane 1510 and the second plane 1520 are symmetrical about the X-axis and intersect at an angle not greater than 30°. There is a solder joint 1370 within the angle range between the first plane 1510 and the second plane 1520.

[0077] The third plane 1530 and the fourth plane 1540 are symmetrical about the Y-axis and intersect at an angle not greater than 30°. There is a solder joint 1370 within the angle range between the third plane 1530 and the fourth plane 1540.

[0078] The fifth plane 1550 and the sixth plane 1560 are symmetrical about the X-axis and intersect at an angle not greater than 30°. There is a solder joint 1370 within the angle range between the fifth plane 1550 and the sixth plane 1560.

[0079] This arrangement makes the distribution of solder joints 1370 more reasonable, balancing the connection stability of the first enclosure 1310 and the second enclosure 1320 with production efficiency. In particular, when the air outlet 1620 is designed to open upwards, the curvature of the bottom, left, and right sides of the volute 1000 usually changes. By optimizing the position of the aforementioned solder joints 1370, a better reinforcement effect is achieved with a limited number of solder joints 1370.

[0080] In some embodiments, combined with Figure 9 , Figure 11 and Figure 12 As shown, the enclosure 1300 includes a volute tongue mounting section 1360, which includes a middle portion 1363, a first side portion 1361, and a second side portion 1362. The middle portion 1363 is located between the first side portion 1361 and the second side portion 1362. The second side portion 1362 is closer to the air outlet 1620 of the volute 1000 relative to the first side portion 1361. The curvature of the middle portion 1363 is greater than the curvature of the first side portion 1361 and greater than the curvature of the second side portion 1362. The volute tongue 1400 is located inside the volute tongue mounting section 1360 and connected to the second side portion 1362. A portion of the volute tongue 1400 extends toward the location of the first side portion 1361 to splice with the volute tongue mounting section 1360, so that the profile of the volute tongue 1400 and the profile of the enclosure 1300 transition smoothly.

[0081] Optionally, combined Figure 9 , Figure 11 and Figure 12 As shown, the volute tongue 1400 can be installed by screwing it into the second side portion 1362. For example, if the second side portion 1362 is flat, the volute tongue 1400 abuts against the inner side of the second side portion 1362. The volute tongue 1400 has a connecting post. By driving a screw through the second side portion 1362 from the outside to the inside and connecting it to the connecting post, the volute tongue 1400 can be installed.

[0082] Combination Figure 9 , Figure 11 and Figure 12 As shown, in some embodiments, the volute tongue 1400 has an extended edge 1420. The volute tongue 1400 extends towards the first side portion 1361 via the extended edge 1420 to splice with the volute tongue mounting section 1360, satisfying the splicing gap requirement. The volute tongue 1400 is a hollow structure and has a support rib 1410 located inside it. The extended edge 1420 protrudes relative to the support rib 1410.

[0083] The support rib 1410 enhances the structural strength of the volute tongue 1400. Since the volute tongue 1400 is connected to the second side portion 1362, the support rib 1410 can abut against the second side portion 1362 after the volute tongue 1400 is installed in place. An extended edge 1420 is provided, protruding relative to the support rib 1410 and extending towards the location of the first side portion 1361, leaving a gap between the extended edge 1420 and the surrounding plate 1300 to ensure proper assembly. Optionally, the extended edge 1420 protrudes no more than 15mm relative to the support rib 1410 to avoid deformation of the extended edge 1420.

[0084] In some embodiments, combined with Figures 9 to 13 As shown, the volute tongue 1400 has an extended edge 1420, which extends towards the first side portion 1361. A reinforcing rib 1430 is provided on the surface of the volute tongue 1400 facing the interior of the volute housing 1000. The reinforcing rib 1430 extends to the extended edge 1420 and extends along the airflow direction. Multiple reinforcing ribs 1430 are arranged alternately along the axial direction of the volute housing 1000. The extended edge 1420 has low strength, and its dimensions may vary due to molding stress and long-term deformation, affecting the smoothness of the flow channel and consequently impacting the fan's noise and airflow performance. By providing the reinforcing rib 1430, the structural strength of the extended edge 1420 is enhanced, and deformation of the extended edge 1420 is suppressed. Optionally, the thickness of the reinforcing rib 1430 along the axial direction of the volute housing 1000 is no more than 1.5 mm to account for airflow resistance.

[0085] In some embodiments, combined with Figures 9 to 13As shown, the volute 1000 is adapted to house the impeller 2000. The impeller 2000 includes a first mounting plate 2100, a second mounting plate 2200, an intermediate mounting plate 2300, and blades 2400. The blades 2400 are mounted between the first mounting plate 2100 and the second mounting plate 2200. The intermediate mounting plate 2300 is located between the first mounting plate 2100 and the second mounting plate 2200 and is connected to the blades 2400. The intermediate mounting plate 2300 is adapted to be connected to the motor 3000. Along the radial direction of the volute 1000, the edges of the first mounting plate 2100, the second mounting plate 2200, and the intermediate mounting plate 2300 each have corresponding reinforcing ribs 1430. Each of the disk positions of the impeller 2000 (first mounting disk 2100, second mounting disk 2200, and intermediate mounting disk 2300) has a corresponding reinforcing rib 1430. The so-called correspondence means that they are basically aligned (the height difference along the axial direction of the impeller 2000 is less than 5mm). This can reduce the pressure fluctuation caused by the mutual influence of airflow at different positions, thereby reducing noise and increasing the efficiency of the fan.

[0086] In some embodiments, the second mounting plate 2200 is adapted for the motor 3000 to pass through. Along the radial direction of the volute 1000, a reinforcing rib 1430 is provided in the space between the first mounting plate 2100 and the intermediate mounting plate 2300. Generally, along the axial direction of the impeller 2000, the distance between the edge of the first mounting plate 2100 and the edge of the intermediate mounting plate 2300 is greater than the distance between the second mounting plate 2200 and the intermediate mounting plate 2300. The reinforcing rib 1430 in the space between the first mounting plate 2100 and the intermediate mounting plate 2300 ensures the structural reliability of the extended edge 1420.

[0087] For example, the reinforcing rib 1430 includes four ribs, namely the first reinforcing rib 1431, the second reinforcing rib 1432, the third reinforcing rib 1433 and the fourth reinforcing rib 1434. Along the radial direction of the volute 1000, the first reinforcing rib 1431 corresponds to the edge of the first mounting plate 2100, the second reinforcing rib 1432 corresponds to the edge of the second mounting plate 2200, the third reinforcing rib 1433 corresponds to the edge of the intermediate mounting plate 2300, and the fourth reinforcing rib 1434 is disposed between the first reinforcing rib 1431 and the third reinforcing rib 1433.

[0088] The second aspect of this application discloses a fan. In some embodiments, the fan includes the aforementioned volute 1000. The volute 1000 includes a first end plate 1100, a second end plate 1200, and a surrounding plate 1300. The surrounding plate 1300 is disposed between the first end plate 1100 and the second end plate 1200. The surrounding plate 1300 includes a first surrounding plate 1310 and a second surrounding plate 1320 arranged along the axial direction of the volute 1000. The first surrounding plate 1310 has a first connecting portion 1330 extending circumferentially thereon, and the second surrounding plate 1320 has a second connecting portion extending circumferentially thereon. The connecting part 1340, the first connecting part 1330 and the second connecting part 1340 overlap and are wound around each other. The impeller 2000 of the fan is disposed inside the volute 1000. The motor 3000 of the fan is connected to the impeller 2000. The motor 3000 drives the impeller 2000 to rotate. The airflow enters the interior of the volute 1000 from the air inlet 1610 and is discharged from the air outlet 1620. The volute 1000 of the fan in this embodiment adopts the technical solution of the above embodiment. Therefore, it has at least the beneficial effects brought by the technical solution of the above embodiment. It will not be repeated here.

[0089] The third aspect of this application discloses a range hood. In some embodiments, the range hood includes the fan described in the above embodiments, and the range hood can exhaust kitchen fumes to the outside. The fan of the range hood in this embodiment adopts the technical solution of the above embodiments, and therefore has at least the beneficial effects brought by the technical solution of the above embodiments, which will not be repeated here.

[0090] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A volute (1000), characterized in that, The volute (1000) includes: First end plate (1100); Second end plate (1200); and A surrounding plate (1300) is disposed between the first end plate (1100) and the second end plate (1200). The surrounding plate (1300) includes a first surrounding plate (1310) and a second surrounding plate (1320) arranged along the axial direction of the volute (1000). The first surrounding plate (1310) is provided with a first connecting portion (1330) extending circumferentially thereon, and the second surrounding plate (1320) is provided with a second connecting portion (1340) extending circumferentially thereon. The first connecting portion (1330) and the second connecting portion (1340) overlap and are wound around each other.

2. The volute (1000) as described in claim 1, characterized in that, The first connecting portion (1330) and the second connecting portion (1340) are wound toward the side where one of the first enclosure plate (1310) and the second enclosure plate (1320) is located to form a rolled edge structure (1350), which is welded to one of the first enclosure plate (1310) and the second enclosure plate (1320).

3. The volute (1000) as described in claim 2, characterized in that, The rolled edge structure (1350) is welded to one of the first enclosure plate (1310) and the second enclosure plate (1320) to form a weld point (1370), and the number of weld points (1370) is multiple, and the multiple weld points (1370) are arranged alternately along the circumference of the enclosure plate (1300).

4. The volute (1000) as described in claim 3, characterized in that, The volute (1000) further includes a volute tongue (1400) which is a separate component relative to the surrounding plate (1300). The surrounding plate (1300) includes a volute tongue mounting section (1360), at least a portion of which is bent. The volute tongue (1400) is mounted on the inner side of the volute tongue mounting section (1360), and the volute tongue mounting section (1360) is provided with the weld point (1370).

5. The volute (1000) as described in claim 4, characterized in that, The weld point (1370) is located at the point of maximum curvature of the volute tongue mounting section (1360); And / or, the minimum radius of curvature of the volute tongue mounting section (1360) is not less than 10 mm.

6. The volute (1000) as described in claim 4, characterized in that, The volute (1000) has an air outlet (1620), the volute tongue mounting section (1360) is located on one side of the air outlet (1620), and the minimum distance between the end of the rolled edge structure (1350) located on the other side of the air outlet (1620) and the nearest weld point (1370) is no more than 20mm.

7. The volute (1000) as described in claim 4, characterized in that, Define a rectangular coordinate system, with the X-axis and Y-axis passing through the center point of the volute (1000). The volute tongue mounting section (1360) and the air outlet (1620) of the volute (1000) are located in the first quadrant. Through the center point, draw a first plane (1510) intersecting the enclosure (1300) in the first quadrant, a second plane (1520) and a third plane (1530) intersecting the enclosure (1300) in the fourth quadrant, a fourth plane (1540) and a fifth plane (1550) intersecting the enclosure (1300) in the third quadrant, and a sixth plane (1560) intersecting the enclosure (1300) in the second quadrant. The first plane (1510) and the second plane (1520) are symmetrical about the X-axis and intersect at an angle not greater than 30°, and the solder joint (1370) is located within the angle range between the first plane (1510) and the second plane (1520). The third plane (1530) and the fourth plane (1540) are symmetrical about the Y-axis and intersect at an angle not greater than 30°. The solder joint (1370) is located within the angle range between the third plane (1530) and the fourth plane (1540). The fifth plane (1550) and the sixth plane (1560) are symmetrical about the X-axis and intersect at an angle not greater than 30°. The solder joint (1370) is located within the angle range between the fifth plane (1550) and the sixth plane (1560).

8. The volute (1000) as described in claim 3, characterized in that, The number of the solder joints (1370) is no more than 8.

9. The volute (1000) as claimed in claim 1, characterized in that, The first connecting portion (1330) and the second connecting portion (1340) are wound together to form a rolled edge structure (1350), the rolled edge structure (1350) having a dimension of not less than 4 mm along the axial direction of the volute (1000).

10. The volute (1000) as claimed in claim 1, characterized in that, The enclosure (1300) includes a volute tongue mounting section (1360), which includes a middle part (1363), a first side part (1361), and a second side part (1362). The middle part (1363) is located between the first side part (1361) and the second side part (1362). The second side part (1362) is closer to the air outlet (1620) of the volute (1000) relative to the first side part (1361). The curvature of the middle part (1363) is greater than the curvature of the first side part (1361) and greater than the curvature of the second side part (1362). The volute (1000) also includes a volute tongue (1400) which is a separate component relative to the enclosure (1300). The volute tongue (1400) is located inside the volute tongue mounting section (1360) and connected to the second side (1362). A portion of the volute tongue (1400) extends toward the location of the first side (1361) to be spliced ​​with the volute tongue mounting section (1360).

11. The volute (1000) as claimed in claim 10, characterized in that, The volute tongue (1400) has an extended edge (1420) that extends toward the first side portion (1361) via the extended edge (1420). The volute tongue (1400) is a hollow structure and has a supporting rib (1410) located inside it. The extended edge (1420) protrudes relative to the supporting rib (1410).

12. The volute (1000) as claimed in claim 10, characterized in that, The volute tongue (1400) has an extended edge (1420), which extends toward the first side portion (1361) through the extended edge (1420). The surface of the volute tongue (1400) facing the interior of the volute shell (1000) is provided with reinforcing ribs (1430), which extend to the extended edge (1420) and extend along the airflow direction. A plurality of reinforcing ribs (1430) are arranged alternately along the axial direction of the volute shell (1000).

13. The volute (1000) as described in claim 12, characterized in that, The volute (1000) is adapted to house a wind turbine (2000). The wind turbine (2000) includes a first mounting plate (2100), a second mounting plate (2200), an intermediate mounting plate (2300), and blades (2400). The blades (2400) are mounted between the first mounting plate (2100) and the second mounting plate (2200). The intermediate mounting plate (2300) is located between the first mounting plate (2100) and the second mounting plate (2200) and is connected to the blades (2400). The intermediate mounting plate (2300) is adapted to be connected to a motor (3000). Along the radial direction of the volute (1000), the edges of the first mounting plate (2100), the second mounting plate (2200), and the intermediate mounting plate (2300) each have a corresponding reinforcing rib (1430).

14. The volute (1000) as described in claim 13, characterized in that, The second mounting plate (2200) is adapted for the motor (3000) to pass through, and the space between the first mounting plate (2100) and the intermediate mounting plate (2300) along the radial direction of the volute (1000) corresponds to the reinforcing rib (1430).

15. The volute (1000) as described in claim 14, characterized in that, The reinforcing ribs (1430) include four ribs, namely the first reinforcing rib (1431), the second reinforcing rib (1432), the third reinforcing rib (1433), and the fourth reinforcing rib (1434), which are radially connected to the first mounting plate (2100). The first reinforcing rib (1431) corresponds to the edge of the first mounting plate (2100), the second reinforcing rib (1432) corresponds to the edge of the second mounting plate (2200), the third reinforcing rib (1433) corresponds to the edge of the intermediate mounting plate (2300), and the fourth reinforcing rib (1434) is located between the first reinforcing rib (1431) and the third reinforcing rib (1433).

16. The volute (1000) as claimed in claim 1, characterized in that, The first end plate (1100) and the first surrounding plate (1310) are integrally formed, and the second end plate (1200) and the second surrounding plate (1320) are integrally formed.

17. A fan, characterized in that, Includes the volute (1000) as described in any one of claims 1 to 16.

18. A range hood, characterized in that, Includes the wind turbine as described in claim 17.

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