Range hood

Abstract

The application belongs to the technical field of household appliances, and discloses a range hood, which comprises a box body, a plastic volute and a motor. The box body is provided with a containing cavity. One side wall plate of the containing cavity is an installation plate. The plastic volute is arranged in the containing cavity. The plastic volute is provided with a mounting bracket. The motor comprises an integrally formed body and a base. The body is arranged in the mounting bracket. The base is arranged on the mounting bracket and connected with the installation plate. In the application, the manufacturing cost of the plastic volute is relatively low. The base of the motor is arranged on the mounting bracket of the plastic volute and connected with the installation plate of the box body, so that the plastic volute and the box body are matched with each other. The weight of the motor and the vibration generated during the operation of the motor can be shared by the box body. The burden of the plastic volute is reduced, the risk of deformation or damage of the plastic volute is reduced, the stability of the motor is improved, the transmission of the vibration is weakened, the noise of the whole machine is reduced, and the reliable operation of the range hood is ensured.

Description

Technical Field

[0001] This invention relates to the field of home appliance technology, and more particularly to a range hood. Background Technology

[0002] A range hood includes a housing and a fan installed inside the housing. When in use, the fan draws the fumes into the fan through the air inlet and then transports them to the exhaust duct through the air outlet, thereby discharging the fumes outdoors.

[0003] Existing fans include a volute, a motor, and an impeller. The impeller is housed within the volute, and the motor shaft extends into the volute and connects to the impeller to drive its rotation. In existing technology, the volute is generally spirally involute-shaped (similar to a snail shell), with all connections made via arcs. Furthermore, the forming process of the front and rear side plates and the surrounding panels of the volute is complex. This results in high assembly requirements, significant manufacturing difficulty, and high overall manufacturing costs when using sheet metal materials for production. Summary of the Invention

[0004] The technical problem solved by this invention is to provide a range hood that can ensure reliable operation while reducing costs.

[0005] The above-mentioned technical problems are solved by the following technical solutions:

[0006] Range hoods include:

[0007] The housing has a receiving cavity inside, and one side wall panel of the receiving cavity is a mounting plate;

[0008] A plastic volute is disposed within the accommodating cavity, and a mounting bracket is provided on the plastic volute.

[0009] The motor includes an integrally formed body and a base, the body being mounted on the mounting frame, and the base being mounted on the mounting frame and connected to the mounting plate.

[0010] The range hood described in this invention has the following advantages compared to the prior art:

[0011] Compared to sheet metal volutes, plastic volutes are simpler to manufacture, reducing mold costs and labor assembly costs, resulting in relatively lower manufacturing costs. This invention mounts the motor base onto a mounting bracket of the plastic volute and connects it to the mounting plate of the housing. This allows the plastic volute and housing to work together, with the housing sharing the weight of the motor and transmitting vibrations generated during operation. This reduces the burden on the plastic volute, decreasing the risk of deformation or damage, improving motor stability, weakening vibration transmission, lowering overall noise, and ensuring reliable operation of the range hood. Furthermore, with the housing sharing the load, and the plastic volute's thickness increasing the strength of the mounting bracket, the design dimensions of the mounting bracket can be appropriately reduced. This reduces airflow resistance at the plastic volute's air inlet, improving the range hood's extraction efficiency.

[0012] In one embodiment, the base surrounds the outer peripheral wall of the body, the side of the base facing the mounting plate is flush with the side of the body facing the mounting plate, the mounting plate, the base and the mounting bracket are connected by fasteners, and the base is clamped between the mounting bracket and the mounting plate.

[0013] In one embodiment, the plastic volute includes a housing, the housing and the mounting plate are spaced apart, a first air inlet is provided on one side of the housing, the mounting bracket is connected to the inner wall of the first air inlet by a connecting arm, the mounting bracket is annular and coaxially arranged with the first air inlet, and multiple connecting arms are provided, which are evenly distributed on the outer periphery of the mounting bracket.

[0014] In one embodiment, the connecting arm extends radially along the first air inlet; or,

[0015] One end of the connecting arm is connected to the inner wall of the first air inlet, and the other end gradually approaches the mounting plate along the direction close to the axis of the first air inlet.

[0016] In one embodiment, the housing, the mounting bracket, and the connecting arm are integrally formed.

[0017] In one embodiment, the dimension L1 of the connecting arm along the circumference of the mounting bracket is greater than the dimension L2 of the mounting bracket in the radial direction; and / or,

[0018] Along the axial direction of the mounting bracket, the maximum thickness L3 of the connecting arm is greater than the thickness L4 of the mounting bracket; and / or,

[0019] Along the axial direction of the mounting bracket, from the end connected to the mounting bracket to the end connected to the housing, the thickness of the connecting arm gradually increases; and / or,

[0020] The connecting arm is provided with a cross-shaped pressing pattern.

[0021] In one embodiment, the plastic volute further includes a support leg, one end of which is connected to the housing and the other end to the mounting plate; and / or,

[0022] On the side plate of the housing facing the mounting plate, a first air inlet ring is provided around the first air inlet. The first air inlet ring is annular, extending from the outer peripheral wall to the inner peripheral wall. The first air inlet ring extends along an arc, and the arc protrudes towards the mounting plate.

[0023] In one embodiment, the plastic volute further includes a metal reinforcement disposed in the mounting bracket.

[0024] In one embodiment, a vibration damping component is further included, the vibration damping component comprising a first vibration damping portion and a second vibration damping portion, the base being clamped between the first vibration damping portion and the second vibration damping portion.

[0025] In one embodiment, the base is provided with a mounting opening, and the vibration damping member includes a connecting portion connecting the first vibration damping part and the second vibration damping part, the connecting portion passing through the mounting opening.

[0026] In one embodiment, the device further includes a plurality of fasteners arranged in a ring around the output shaft of the motor. Each fastener is fitted with a vibration damping element. Some of the fasteners are first fasteners that fasten the mounting plate, the base, and the mounting bracket. Some of the fasteners are second fasteners that fasten the base and the mounting bracket. The first and second fasteners are staggered.

[0027] In one embodiment, the mounting plate has a supporting protrusion, an outer ring protrusion, and a connecting protrusion protruding towards the accommodating cavity. The plastic volute and the motor are disposed in the accommodating cavity. The base is fixedly connected to the supporting protrusion. The outer ring protrusion is arranged around the outer periphery of the supporting protrusion. The connecting protrusion is located between the supporting protrusion and the outer ring protrusion, with one end connected to the supporting protrusion and the other end connected to the outer ring protrusion. The protrusion height of the supporting protrusion is higher than that of the outer ring protrusion.

[0028] In one embodiment, the supporting convex hull includes an inner ring convex hull, and the connecting convex strip is located between the inner ring convex hull and the outer ring convex hull, with one end connected to the inner ring convex hull and the other end connected to the outer ring convex hull.

[0029] In one embodiment, the supporting convex hull further includes a central convex hull, and the inner ring convex hull is disposed around the outside of the central convex hull, and the base is connected to the inner ring convex hull and the central convex hull. Attached Figure Description

[0030] Figure 1 This is a partial structural diagram of the range hood described in an embodiment of the present invention. Figure 1 ;

[0031] Figure 2 This is a partial structural diagram of the range hood described in an embodiment of the present invention. Figure 2 ;

[0032] Figure 3 yes Figure 2 A cross-sectional view of the structure shown;

[0033] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0034] Figure 5 This is a partial structural diagram of the range hood described in an embodiment of the present invention. Figure 3 ;

[0035] Figure 6 This is a schematic diagram of the structure of the plastic volute described in an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of the motor, vibration damper, and fasteners in cooperation according to an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the structure of the motor described in an embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram of the structure of the vibration damper, fastener and metal reinforcement as described in the embodiment of the present invention;

[0039] Figure 10 yes Figure 5 A BB-direction sectional view of the structure shown;

[0040] Figure 11 yes Figure 10 A magnified view of point C in the middle.

[0041] Label Explanation:

[0042] 1. Housing; 11. Mounting plate; 111. Outer ring protrusion; 112. Connecting protrusion; 113. Inner ring protrusion; 114. Central protrusion; 100. Receiving cavity;

[0043] 2. Plastic volute; 21. Housing; 211. First air inlet; 212. First air inlet ring; 213. Second air inlet; 214. Second air inlet ring; 22. Mounting bracket; 23. Connecting arm; 24. Support leg; 25. Metal reinforcement;

[0044] 3. Motor; 31. Machine body; 32. Machine base; 321. Fitting port;

[0045] 4. Vibration damping component; 41. First vibration damping part; 42. Second vibration damping part; 43. Connecting part;

[0046] 5. First fastener;

[0047] 6. Second fastener;

[0048] 7. Impeller. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] In the description of this invention, it should be understood that the terms "center", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0051] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] like Figures 1 to 11As shown, this embodiment provides a range hood, including a housing 1, a plastic volute 2, and a motor 3. The housing 1 has a receiving cavity 100, one side wall of which is a mounting plate 11. The plastic volute 2 is disposed within the receiving cavity 100 and has a mounting bracket 22. The motor 3 includes an integrally formed body 31 and a base 32. The body 31 passes through the mounting bracket 22, and the base 32 is mounted on the mounting bracket 22 and connected to the mounting plate 11.

[0054] Compared to sheet metal volutes, plastic volutes 2 are simpler to manufacture, reducing mold costs and labor assembly costs, resulting in relatively lower manufacturing costs. This invention mounts the motor 3's base 32 onto the mounting bracket 22 of the plastic volute 2 and connects it to the mounting plate 11 of the housing 1. This allows the plastic volute 2 and housing 1 to work together, enabling the housing 1 to share the weight of the motor 3 and transmit the vibrations generated during motor operation. This reduces the burden on the plastic volute 2, decreases the risk of deformation or damage, improves the stability of the motor 3, weakens vibration transmission, reduces overall noise, and ensures reliable operation of the range hood. Furthermore, with the weight-sharing effect of the housing 1, and by increasing the thickness of the plastic volute 2 to enhance the strength of the mounting bracket 22, the design dimensions of the mounting bracket 22 can be appropriately reduced. This reduces the airflow resistance at the air inlet of the plastic volute 2, improving the range hood's exhaust efficiency.

[0055] Specifically, the base 32 surrounds the outer peripheral wall of the body 31. The side of the base 32 facing the mounting plate 11 is flush with the side of the body 31 facing the mounting plate 11. The mounting plate 11, the base 32, and the mounting bracket 22 are connected by fasteners. The base 32 is clamped between the mounting bracket 22 and the mounting plate 11. By clamping and connecting the base 32 of the motor 3 between the mounting bracket 22 of the plastic volute 2 and the mounting plate 11 of the housing 1, compared with the point contact state when setting the motor bracket and fixing it with screws, it is equivalent to increasing the contact area between the base 32 and the mounting bracket 22 and the mounting plate 11 respectively. This allows the weight of the motor 3 and the vibration generated by the motor 3 during operation to be transmitted to the mounting plate 11 through the entire large contact surface. The force transmission is more dispersed, reducing vibration and noise. At the same time, the fasteners connect the mounting plate 11, the base 32, and the mounting bracket 22 together, making the installation of the motor 3 more stable.

[0056] In other embodiments, the base 32 may be located on the side of the body 31 near the mounting plate 11, and the base 32 is connected to the mounting plate 11 and the mounting bracket 22 respectively.

[0057] In other embodiments, the base 32 may also be snapped into the mounting bracket 22 and connected to the mounting plate 11. In this case, the outer periphery of the base 32 is connected to the mounting bracket 22 by fasteners.

[0058] More specifically, the plastic volute 2 includes a housing 21, with the housing 21 and mounting plate 11 spaced apart. A first air inlet 211 is provided on one side of the housing 21. A mounting bracket 22 is connected to the inner wall of the first air inlet 211 via connecting arms 23. The mounting bracket 22 is annular and coaxially arranged with the first air inlet 211. Multiple connecting arms 23 are provided, evenly distributed around the outer periphery of the mounting bracket 22. With the load-bearing function of the housing 1, and by increasing the thickness of the plastic volute 2 to improve the strength of the mounting bracket 22, the design dimensions of the mounting bracket 22 can be appropriately reduced, as can the design dimensions of the connecting arms 23. This further reduces the air resistance at the first air inlet 211, improving the exhaust efficiency of the range hood. In addition, the mounting bracket 22 is annular and coaxially arranged with the first air inlet 211. The body 31 passes through the mounting bracket 22, which makes the concentricity of the motor 3 and the housing 21 better after the motor 3 is assembled on the mounting bracket 22. Multiple connecting arms 23 are evenly distributed on the outer periphery of the mounting bracket 22, which makes the force on the housing 21 more balanced and stable, and further enhances the connection stability of the motor 3.

[0059] More specifically, the housing 21, mounting bracket 22, and connecting arm 23 are integrally molded. This integral molding, compared to the screw-fixing method used in separate assembly, effectively changes the point contact between the housing 21, mounting bracket 22, and connecting arm 23 to surface contact, strengthening the support of the plastic volute housing 2 for the motor 3. The integral injection molding of the mounting bracket 22 and connecting arm 23 onto the housing 21 effectively simplifies the installation structure of the motor 3, eliminating the need for the original motor bracket, improving the stability of the motor 3, and also increasing production efficiency.

[0060] In this embodiment, the connecting arm 23 extends radially along the first air inlet 211, and multiple connecting arms 23 are arranged inside the first air inlet 211. At this time, the mounting bracket 22 is located inside the housing 21, occupying less space inside the box 1.

[0061] In other embodiments, one end of the connecting arm 23 is connected to the inner wall of the first air inlet 211, and the other end gradually approaches the mounting plate 11 along the direction close to the axis of the first air inlet 211, so that multiple connecting arms 23 protrude from one side of the housing 21. At this time, the mounting bracket 22 is located on the outside of the housing 21, increasing the gap between the housing 21 and the mounting plate 11, thereby effectively increasing the air intake of the first air inlet 211. The tilt angle of the connecting arm 23 relative to the axis of the first air inlet 211 can be adjusted as needed.

[0062] Specifically, such as Figure 6As shown, on the side plate of the housing 21 facing the mounting plate 11, a first air inlet ring 212 is provided around the first air inlet 211. The first air inlet ring 212 is annular, extending along an arc from the outer peripheral wall to the inner peripheral wall, with the arc protruding towards the mounting plate 11. By providing the first air inlet ring 212, the wind resistance of the incoming air can be effectively reduced, thus reducing energy consumption and noise.

[0063] In this embodiment, the body 31 is inserted into the mounting frame 22 and spaced apart from the inner wall of the mounting frame 22. Four connecting arms 23 are provided and arranged in a cross shape.

[0064] In other embodiments, a buffer gasket may be sandwiched between the inner wall of the body 31 and the mounting bracket 22. In other embodiments, the connecting arms 23 may be provided in other numbers.

[0065] More specifically, the shell 21 of the plastic volute 2 is assembled from a front shell and a rear shell, which together form a wind cavity. The first air inlet 211 is located on the rear shell and communicates with the wind cavity, and the first air inlet ring 212 is located on the rear shell.

[0066] In this embodiment, the mounting bracket 22 and the connecting arm 23 are integrally injection molded into the rear shell, such as... Figure 2 and Figure 3 As shown, a second air inlet 213 is provided on the side of the front shell opposite to the rear shell. The second air inlet 213 is connected to the air cavity. On the side plate of the shell 21 opposite to the mounting plate 11, a second air inlet ring 214 is provided around the second air inlet 213. The second air inlet ring 214 is annular, extending from the outer peripheral wall to the inner peripheral wall. The second air inlet ring 214 extends along an arc, and the arc protrudes away from the mounting plate 11. The inner peripheral wall of the second air inlet ring 214 forms the second air inlet 213. The second air inlet ring 214 is provided on the front shell. By providing the second air inlet ring 214, the wind resistance of the air intake can be effectively reduced, and energy consumption and noise can be reduced.

[0067] Specifically, such as Figure 6 As shown, the circumferential dimension L1 of the connecting arm 23 along the mounting bracket 22 is greater than the radial dimension L2 of the mounting bracket 22. This arrangement effectively improves the structural strength of the connecting arm 23, enabling it to more reliably transmit the force on the mounting bracket 22 to the housing 21, and making the connecting arm 23 less prone to deformation and damage, thus effectively ensuring the reliability of the motor 3 assembly.

[0068] More specifically, such as Figure 3As shown, along the axial direction of the mounting bracket 22, the maximum thickness L3 of the connecting arm 23 is greater than the thickness L4 of the mounting bracket 22. This configuration effectively improves the structural strength of the connecting arm 23, enabling it to more reliably transmit the force received by the mounting bracket 22 to the housing 21, and making the connecting arm 23 less prone to deformation and damage, thus effectively ensuring the reliability of the motor 3 assembly.

[0069] More specifically, along the axial direction of the mounting bracket 22, from the end connected to the mounting bracket 22 to the end connected to the housing 21, the thickness of the connecting arm 23 gradually increases. This arrangement allows the connecting arm 23 to not only adapt to the thinner mounting bracket 22, but also makes the structure more reliable, the force transmission and stress distribution more stable, and reduces the risk of damage or deformation caused by sudden changes in thickness.

[0070] In this embodiment, the connecting arm 23 is provided with a cross-shaped pressing pattern, which improves the structural strength of the connecting arm 23 while reducing weight.

[0071] More specifically, such as Figure 4 as well as Figures 9 to 11 As shown, the plastic volute 2 also includes a metal reinforcing member 25, which is disposed in the mounting bracket 22. This design effectively improves the structural strength of the mounting bracket 22.

[0072] In this embodiment, the metal reinforcement 25 is in the form of a plate and is placed in the mounting bracket 22 during injection molding.

[0073] Specifically, such as Figure 3 , Figure 5 and Figure 6 As shown, the plastic volute 2 also includes a support leg 24, one end of which is connected to the housing 21 and the other end to the mounting plate 11. This arrangement allows the weight of the plastic volute 2 to be transferred to the mounting plate 11 via the mounting bracket 22 and the support leg 24, effectively reducing the burden on the mounting bracket 22.

[0074] More specifically, multiple support legs 24 are provided, arranged around the first air inlet 211. This arrangement makes the force transmission between the plastic volute 2 and the mounting plate 11 more dispersed and even.

[0075] Specifically, there are four legs 24, and there are reinforcing ribs connecting the side walls of the legs 24 and the rear shell.

[0076] More specifically, the rear shell, mounting bracket 22, connecting arm 23 and support leg 24 are integrally injection molded. The support leg 24 is located on the side of the rear shell away from the front shell. The support leg 24, mounting bracket 22 and connecting arm 23 are located on the same side of the rear shell, which facilitates demolding during injection molding.

[0077] In this embodiment, as Figure 1As shown, the plastic volute 2 also includes an impeller 7, which is connected to the output shaft of the motor 3. When the motor 3 drives the impeller 7 to rotate, it drives the external airflow to enter the air cavity from the first air inlet 211 and the second air inlet 213.

[0078] Specifically, such as Figure 3 , Figure 4 and Figure 9 As shown, the range hood also includes a vibration damping component 4, which includes a first vibration damping part 41 and a second vibration damping part 42. The base 32 is sandwiched between the first vibration damping part 41 and the second vibration damping part 42. The base 32 abuts against the mounting plate 11 through the first vibration damping part 41 and against the mounting frame 22 through the second vibration damping part 42. This arrangement allows the vibration damping component 4 to simultaneously buffer and dampen the vibrations of the mounting plate 11, the base 32, and the mounting frame 22.

[0079] More specifically, such as Figure 8 As shown, the base 32 is provided with a mounting opening 321. The vibration damper 4 includes a connecting portion 43. The first vibration damping portion 41 and the second vibration damping portion 42 are spaced apart from each other and are respectively connected to the connecting portion 43. The connecting portion 43 passes through the mounting opening 321. The mounting opening 321 limits the connection portion 43, so that the vibration damper 4 can be stably and reliably assembled on the base 32.

[0080] In this embodiment, the base 32 is disc-shaped and located at one end of the body 31. The outer diameter of the base 32 is not greater than the mounting bracket 22. The mounting opening 321 is evenly distributed along the circumference of the base 32, penetrates both sides of the base 32 in the thickness direction, and connects to the outer peripheral wall of the base 32. The vibration damping member 4 is made of rubber and is I-shaped. The first vibration damping part 41 and the second vibration damping part 42 are respectively connected to the two ends of the connecting part 43.

[0081] Specifically, such as Figure 7As shown, the range hood also includes multiple fasteners, which are arranged in a ring around the output shaft of the motor 3. Each fastener is fitted with a vibration damping element 4. Some of the fasteners are first fasteners 5, which fasten the mounting plate 11, the base 32 and the mounting bracket 22. Some of the fasteners are second fasteners 6, which fasten the base 32 and the mounting bracket 22. The first fasteners 5 and the second fasteners 6 are staggered. In the above configuration, the first fastener 5 securely connects the mounting plate 11, the base 32, and the mounting bracket 22, ensuring a reliable connection between the three. The second fastener 6 securely connects the base 32 and the mounting bracket 22, ensuring a more stable and reliable assembly of the motor 3 on the plastic volute 2. Each fastener is fitted with a vibration damping element 4, allowing the base 32 to be separated from the fastener by the vibration damping element 4, achieving buffering and vibration reduction. During assembly, the base 32 and the mounting bracket 22 are first assembled into a module using the second fastener 6, and then the entire module is assembled onto the mounting plate 11 using the first fastener 5. This reduces the difficulty of assembling the base 32 and the mounting bracket 22 with the mounting plate 11 later, and eliminates the need for subsequent adjustments to the position of the motor 3, resulting in higher installation accuracy.

[0082] More specifically, among the multiple fasteners arranged in a ring, a second fastener 6 is provided between two adjacent first fasteners 5, and a first fastener 5 is provided between two adjacent second fasteners 6. This arrangement makes the force transmission between the mounting plate 11, the base 32, and the mounting bracket 22 more uniform.

[0083] In this embodiment, each damper 4 has a fastener, which is a bolt, screwed to the metal reinforcement 25 and the mounting bracket 22. A total of eight fasteners are provided, four of which are first fasteners 5 and four of which are second fasteners 6.

[0084] Specifically, such as Figure 1 As shown, the housing 1 has a receiving cavity 100. One side wall of the receiving cavity 100 is a mounting plate 11. The mounting plate 11 has a supporting protrusion, an outer ring protrusion 111 and a connecting protrusion 112 protruding towards the receiving cavity 100. The plastic volute 2 and the motor 3 are disposed in the receiving cavity 100. The base 32 is fixedly connected to the supporting protrusion. The outer ring protrusion 111 is arranged around the outer periphery of the supporting protrusion. The connecting protrusion 112 is located between the supporting protrusion and the outer ring protrusion 111, with one end connected to the supporting protrusion and the other end connected to the outer ring protrusion 111. The protrusion height of the supporting protrusion is higher than the protrusion height of the outer ring protrusion 111.

[0085] A supporting protrusion is provided on the mounting plate 11, which effectively improves the structural strength at the location of the supporting protrusion. The supporting protrusion provides fixed support for the base 32, thereby improving the stability of the motor 3. On this basis, an outer ring protrusion 111 and a connecting protrusion 112 are additionally provided on the mounting plate 11. The outer ring protrusion 111 is arranged around the outer periphery of the supporting protrusion, and the connecting protrusion 112 is located between the supporting protrusion and the outer ring protrusion 111, with one end connected to the supporting protrusion and the other end connected to the outer ring protrusion 111. While further improving the structural strength, the supporting protrusion can transmit and distribute the force generated by the vibration of the motor 3 to the connecting protrusion 112 and the outer ring protrusion 111, so as to disperse the vibration transmitted by the motor 3 to the periphery of the mounting plate 11. The cooperative design of the supporting protrusion, the outer ring protrusion 111, and the connecting protrusion 112 not only effectively improves the support capacity, making the installation of the motor 3 in the accommodating cavity 100 more stable and reliable, but also reduces the vibration noise of the motor 3 during operation.

[0086] The height of the supporting protrusion is higher than that of the outer ring protrusion 111. Since the supporting protrusion needs to connect to the motor 3 and needs to provide sufficient support force for the motor 3, the height of the supporting protrusion is set higher than that of the outer ring protrusion 111 to achieve higher structural strength. Since the outer ring protrusion 111 needs to provide lower support strength and is closer to the edge of the mounting plate 11 than the supporting protrusion, the extension length of the outer ring protrusion 111 is longer than that of the supporting protrusion. If the height of the outer ring protrusion 111 is the same as that of the supporting protrusion, the edge of the mounting plate 11 is prone to tensile deformation during stamping. Therefore, the height of the outer ring protrusion 111 is set lower than that of the supporting protrusion to ensure the overall forming quality of the mounting plate 11.

[0087] More specifically, the supporting convex bulge includes an inner ring convex bulge 113, and a connecting convex strip 112 is located between the inner ring convex bulge 113 and the outer ring convex bulge 111, with one end connected to the inner ring convex bulge 113 and the other end connected to the outer ring convex bulge 111. The inner ring convex bulge 113 is annular and has a larger span on the mounting plate 11, which can accommodate multiple fixed connection positions of the base 32, making the base 32 more reliably assembled.

[0088] More specifically, the supporting convex bulge also includes a central convex bulge 114, and an inner ring convex bulge 113 is arranged around the outer side of the central convex bulge 114. The base 32 is connected to the inner ring convex bulge 113 and the central convex bulge 114. The central convex bulge 114 is arranged inside the inner ring convex bulge 113, and the inner ring convex bulge 113 and the central convex bulge 114 cooperate to adapt to the eccentric installation state of the impeller 7. In this embodiment, due to the eccentric design of the impeller 7, some of the first fasteners 5 are fastened to the inner ring convex bulge 113, the base 32 and the mounting bracket 22, and some of the first fasteners 5 are fastened to the central convex bulge 114, the base 32 and the mounting bracket 22.

[0089] In this embodiment, the housing 1 is composed of multiple metal plates, and a receiving cavity 100 is provided inside. The plastic volute 2 and the motor 3 are located in the receiving cavity 100. The mounting plate 11 serves as the back plate of the housing 1 and is located on the rear side of the receiving cavity 100. In other embodiments, the mounting plate 11 may be located on the front, left, or right side of the receiving cavity 100, depending on the installation position of the motor 3.

[0090] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0091] The specific embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A range hood, characterized by include: The box (1) has a receiving cavity (100) inside, and one side wall panel of the receiving cavity (100) is a mounting plate (11). A plastic volute (2) is disposed in the accommodating cavity (100), and a mounting bracket (22) is provided on the plastic volute (2). The motor (3) includes an integrally formed body (31) and a base (32). The body (31) is mounted on the mounting frame (22), and the base (32) is mounted on the mounting frame (22) and connected to the mounting plate (11).

2. The hood according to claim 1, characterized in that, The base (32) surrounds the outer peripheral wall of the body (31). The side of the base (32) facing the mounting plate (11) is flush with the side of the body (31) facing the mounting plate (11). The mounting plate (11), the base (32) and the mounting bracket (22) are connected by fasteners. The base (32) is sandwiched between the mounting bracket (22) and the mounting plate (11).

3. The range hood according to claim 1, characterized in that, The plastic volute (2) includes a shell (21), the shell (21) and the mounting plate (11) are spaced apart, a first air inlet (211) is provided on one side of the shell (21), the mounting bracket (22) is connected to the inner wall of the first air inlet (211) by a connecting arm (23), the mounting bracket (22) is annular and coaxially arranged with the first air inlet (211), and multiple connecting arms (23) are provided, and multiple connecting arms (23) are evenly distributed on the outer periphery of the mounting bracket (22).

4. The range hood according to claim 3, characterized in that, The connecting arm (23) extends radially along the first air inlet (211); or, One end of the connecting arm (23) is connected to the inner wall of the first air inlet (211), and the other end gradually approaches the mounting plate (11) along the direction close to the axis of the first air inlet (211).

5. The range hood according to claim 3, characterized in that, The housing (21), the mounting bracket (22), and the connecting arm (23) are integrally formed.

6. The range hood according to claim 3, characterized in that, The dimension L1 of the connecting arm (23) along the circumference of the mounting bracket (22) is greater than the dimension L2 of the mounting bracket (22) in the radial direction; and / or, Along the axial direction of the mounting bracket (22), the maximum thickness L3 of the connecting arm (23) is greater than the thickness L4 of the mounting bracket (22); and / or, Along the axial direction of the mounting bracket (22), from the end connected to the mounting bracket (22) to the end connected to the housing (21), the thickness of the connecting arm (23) gradually increases; and / or, The connecting arm (23) is provided with a cross-shaped pressing pattern.

7. The range hood according to claim 3, characterized in that, The plastic volute (2) further includes a support leg (24), one end of which is connected to the housing (21) and the other end to the mounting plate (11); and / or, On the side plate of the housing (21) facing the mounting plate (11), a first air inlet ring (212) is provided around the first air inlet (211). The first air inlet ring (212) is annular, extending from the outer peripheral wall to the inner peripheral wall. The first air inlet ring (212) extends along an arc, and the arc protrudes towards the mounting plate (11).

8. The range hood according to claim 1, characterized in that, The plastic volute (2) also includes a metal reinforcement (25), which is disposed in the mounting bracket (22).

9. The range hood according to claim 1, characterized in that, It also includes a vibration damping component (4), which includes a first vibration damping part (41) and a second vibration damping part (42), and the base (32) is sandwiched between the first vibration damping part (41) and the second vibration damping part (42).

10. The range hood according to claim 9, characterized in that, The base (32) is provided with a mounting opening (321), and the vibration damping member (4) includes a connecting part (43) connecting the first vibration damping part (41) and the second vibration damping part (42), and the connecting part (43) passes through the mounting opening (321).

11. The range hood according to claim 9, characterized in that, It also includes multiple fasteners, which are arranged in a ring around the output shaft of the motor (3). Each fastener is fitted with a vibration damper (4). Some of the fasteners are first fasteners (5), which fasten the mounting plate (11), the base (32) and the mounting bracket (22). Some of the fasteners are second fasteners (6), which fasten the base (32) and the mounting bracket (22). The first fasteners (5) and the second fasteners (6) are staggered.

12. The range hood according to any one of claims 1-11, characterized in that, The mounting plate (11) is provided with a supporting protrusion, an outer ring protrusion (111) and a connecting protrusion (112) protruding towards the accommodating cavity (100). The motor (3) is disposed in the accommodating cavity (100). The base (32) is fixedly connected to the supporting protrusion. The outer ring protrusion (111) is arranged around the outer periphery of the supporting protrusion. The connecting protrusion (112) is located between the supporting protrusion and the outer ring protrusion (111), with one end connected to the supporting protrusion and the other end connected to the outer ring protrusion (111). The protrusion height of the supporting protrusion is higher than that of the outer ring protrusion (111).

13. The range hood according to claim 12, characterized in that, The supporting convex hull includes an inner ring convex hull (113), and the connecting convex strip (112) is located between the inner ring convex hull (113) and the outer ring convex hull (111), with one end connected to the inner ring convex hull (113) and the other end connected to the outer ring convex hull (111).

14. The range hood according to claim 13, characterized in that, The supporting convex hull also includes a central convex hull (114), and the inner ring convex hull (113) is arranged around the outside of the central convex hull (114). The base (32) is connected to the inner ring convex hull (113) and the central convex hull (114).

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