Range hood

Abstract

The utility model discloses a range hood belongs to the technical field of home appliances, and the range hood is designed to solve the low dismounting efficiency of the existing range hood and other problems. The utility model discloses a range hood includes: the shell subassembly, and the air duct shell and the shell top board form the accommodation cavity between, fan assembly, including the volute main part and volute support that are connected, and the fan assembly is located in the accommodation cavity, and the volute support is connected to the inner wall surface of shell top board, and the air duct backboard is connected to the air duct shell, and the air duct backboard blocks the open end of the accommodation cavity. The utility model discloses a range hood, and the shell subassembly, fan assembly and air duct backboard can be independently disassembled and maintained respectively, and the air duct in the range hood realizes modularization, integration, improves the pneumatic performance of the air duct, and the fan assembly can be independently disassembled and maintained, and is more convenient to use. The fan assembly is assembled as a whole structure, and the dismounting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of home appliance technology, and in particular to range hoods. Background Technology

[0002] A range hood includes a fan assembly and a housing. The fan assembly includes a volute, a motor, and an impeller. The motor enables the impeller to rotate in the volute. When the impeller rotates, it generates negative pressure in the housing. Under the action of negative pressure, the cooking fumes are drawn into the air duct inside the housing and eventually discharged outdoors along the air duct.

[0003] Existing range hoods have independent structures such as the volute and motor. During assembly, the volute and motor need to be installed separately in the housing, resulting in low disassembly and assembly efficiency and inconvenience for replacement and maintenance. The fan assembly includes a large number of parts, resulting in low processing efficiency. If incorrect or missing parts are installed, rework is required, which is labor-intensive. The fan assembly has many gaps inside, which may allow air to leak through, making it difficult to form an integrated air duct and resulting in poor smoke extraction and exhaust effects. Utility Model Content

[0004] The purpose of this utility model is to propose a range hood that solves the problem of low disassembly and assembly efficiency of existing range hoods, making it easier to replace and maintain.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A range hood includes: a housing assembly comprising a duct housing and a top housing plate, wherein a cavity is formed between the duct housing and the top housing plate; a fan assembly comprising a volute body and a volute support connected to each other, the fan assembly being located in the cavity, the volute support being connected to the inner wall of the top housing plate; and a duct back plate connected to the duct housing, the duct back plate sealing the opening end of the cavity.

[0007] In one preferred embodiment, the fan assembly further includes a main air intake plate detachably connected to the volute body, wherein the volute body and the volute support are integrally formed.

[0008] In one preferred embodiment, the volute body includes a first section surface, a second section surface, a third section surface, and a fourth section surface that are smoothly connected in sequence. The first section surface is connected to the volute tongue of the volute body, and the volute tongue and the fourth section surface are respectively connected to opposite sides of the volute air outlet.

[0009] In one preferred embodiment, the volute body further includes an annular volute surround plate, the volute tongue, the first section surface, the second section surface, the third section surface, and the fourth section surface form a volute side plate, the volute surround plate is connected to one side opening end of the volute side plate, and a transition arc surface is formed between the volute surround plate and the volute side plate.

[0010] In one preferred embodiment, the range hood further includes a motor, and a support foot is embedded in the volute enclosure, with the motor fixedly connected to the support foot.

[0011] In one preferred embodiment, the support foot is made of metal and is located in the injection mold during the injection molding process of the volute body.

[0012] In one preferred embodiment, the volute body further includes an annular air inlet ring, which is connected to the volute casing surrounding plate and the opposite open ends of the volute casing side plate, respectively.

[0013] In one preferred embodiment, the volute support includes a support tube, a support tube reinforcing rib, and an arched base. The support tube is vertically arranged, and the arched base is connected between the support tube and the volute body. The support tube reinforcing rib is connected to the side wall of the support tube, and the extension direction of the support tube reinforcing rib is consistent with the extension direction of the support tube.

[0014] In one preferred embodiment, the volute support further includes a base reinforcing rib, which is located within the space enclosed by the arched base and the volute body, and is connected between the arched base and the volute body.

[0015] In one preferred embodiment, the volute bracket is fixedly connected to the inner wall surface of the top plate of the outer casing; and / or, a hook is provided on the inner wall surface of the top plate of the outer casing, and the volute bracket is hung on the hook.

[0016] The range hood disclosed in this utility model allows for independent disassembly and maintenance of the outer casing, fan assembly, and duct back panel. The internal ductwork is modular and integrated, with fewer gaps, improving its aerodynamic performance. The fan assembly can be independently disassembled and maintained, making it more convenient to use. Assembling the fan assembly as a single unit avoids incorrect or missing parts, reducing rework rates and improving assembly and disassembly efficiency. The fan assembly is connected to the inner wall of the top panel of the outer casing via a volute bracket; vibrations from the fan assembly are transmitted to the top panel, effectively reducing vibrations in the duct casing and lowering noise. Attached Figure Description

[0017] Figure 1 This is an exploded view of the range hood provided in a specific embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the combined structure of the volute body, volute support, and air duct rear plate provided in a specific embodiment of this utility model.

[0019] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0020] Figure 4 This is a schematic diagram of the combined structure of the volute body, volute support, air duct rear plate and main air inlet plate provided in a specific embodiment of this utility model;

[0021] Figure 5 This is one of the structural schematic diagrams of the fan assembly provided in a specific embodiment of this utility model;

[0022] Figure 6 This is the second structural schematic diagram of the fan assembly provided in a specific embodiment of this utility model.

[0023] In the picture:

[0024] 1. Casing assembly; 2. Fan assembly; 3. Duct back plate; 11. Accommodating cavity; 12. Duct casing; 13. Casing top plate; 21. Volute body; 22. Volute support; 23. Main air inlet plate; 24. Support foot; 25. Motor; 26. Duct rear plate; 27. Impeller; 211. First section profile; 212. Second section profile; 213. Third section profile; 214. Fourth section profile; 215. Volute tongue; 216. Volute air outlet; 217. Volute enclosure plate; 218. Arc surface; 219. Air inlet ring; 221. Support tube; 222. Support tube reinforcing rib; 223. Arched base; 224. Base reinforcing rib. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] This embodiment discloses a range hood for collecting and discharging cooking fumes. For example... Figure 1 As shown, the range hood includes a housing assembly 1, a fan assembly 2, and a duct back panel 3. The housing assembly 1 includes a duct housing 12 and a top housing plate 13, forming an accommodating cavity 11 between the duct housing 12 and the top housing plate 13. The fan assembly 2 is located in the accommodating cavity 11, and the duct back panel 3 is connected to the duct housing 12 and seals the opening of the accommodating cavity 11.

[0032] like Figures 1 to 3 As shown, the fan assembly 2 includes a volute body 21, a volute support 22, and a duct back plate 26 connected to each other. The duct outer shell 12 and the duct back plate 3 are made of metal, with the duct back plate 3 located outside the duct back plate 26. The duct outer shell 12 and the duct back plate 3 form a duct structure, and the fan assembly 2 is located within the duct structure.

[0033] During the assembly of the range hood, the fan assembly 2 is assembled as a whole structure, which improves the efficiency of disassembly and assembly. The fan assembly 2 is connected to the inner wall of the top plate 13 of the outer casing through the volute bracket 22. The fan assembly 2 generates airflow and causes vibration, which is transmitted to the top plate 13 of the outer casing, which can effectively reduce the vibration of the duct outer casing 12 and reduce noise.

[0034] The outer shell assembly 1, fan assembly 2, and duct back panel 3 of this range hood can be disassembled and maintained independently. The internal duct of the range hood is modular and integrated with fewer gaps, which improves the aerodynamic performance of the duct and the oil fume extraction effect. The fan assembly 2 can be disassembled and maintained independently, making it more convenient to use and avoiding incorrect or missing parts, thus reducing the rework rate.

[0035] The specific structure of the volute support 22 is not limited, as long as it can be stably connected to the inner wall of the top plate 13 of the outer casing. In this embodiment, the volute support 22 includes a support tube 221, a support tube reinforcing rib 222, and an arched base 223. The support tube 221 is vertically arranged, and the arched base 223 connects the support tube 221 and the volute body 21. That is, the bottom edge shape of the arched base 223 is consistent with the outer surface of the volute body 21, ensuring that the arched base 223 and the volute body 21 form a solid overall structure. The support tube 221 is located on the top surface of the arched base 223. The bottom shape design of the support tube 221 does not need to consider the outer surface shape of the volute body 21; the structural stability of the support tube 221 is the primary reference factor in the shape design, thereby effectively improving the strength and load-bearing capacity of the support tube 221, preventing the separation of the outer casing assembly 1 and the fan assembly 2 due to vibration or prolonged use, resulting in higher safety and a longer service life for the range hood.

[0036] The reinforcing rib 222 of the support tube is connected to the side wall of the support tube 221, and the extension direction of the reinforcing rib 222 is consistent with the extension direction of the support tube 221. Specifically, one side of the reinforcing rib 222 is connected to the side wall of the support tube 221, and the bottom edge of the reinforcing rib 222 is connected to the arched base 223, which greatly improves the stability of the connection between the support tube 221 and the arched base 223 and strengthens the load-bearing capacity.

[0037] To further increase the strength and load-bearing capacity of the arched base 223, the volute support 22 also includes a base reinforcing rib 224, which connects the arched base 223 and the volute body 21. Specifically, in the vertical cross-section, the arched base 223, which is in the shape of an arch bridge, and the volute body 21 form a ring, and the base reinforcing rib 224 is vertically arranged within the space enclosed by the arched base 223 and the volute body 21.

[0038] The specific connection method between the outer casing assembly 1 and the fan assembly 2 is not limited, as long as a stable connection and low noise are achieved. In one structure, the support tube 221 is an internally threaded tube, and a through hole is provided on the top plate 13 of the outer casing. Bolts and other connecting parts pass through the through hole and can be connected to the internally threaded tube, thereby fixing the volute support 22 to the inner wall of the top plate 13 of the outer casing. The overall connection structure is stable and firm, the outer casing assembly 1 and the fan assembly 2 are not easily separated, and the noise is low.

[0039] In another structure, hooks are provided on the inner wall of the top plate 13 of the outer casing, and the volute bracket 22 is hung on the hooks, making disassembly and assembly more convenient. The fan assembly 2 can be disassembled and assembled without the use of wrenches or other devices, reducing the difficulty of disassembly, assembly and maintenance.

[0040] The specific structure of the volute body 21 is not limited. In this embodiment, the volute body 21 includes a volute tongue 215, a first profile 211, a second profile 212, a third profile 213, and a fourth profile 214. The first profile 211, the second profile 212, the third profile 213, and the fourth profile 214, whose radii of curvature change continuously and gradually, are smoothly connected in sequence. The volute tongue 215 is connected to the first profile 211. Specifically, a volute air outlet 216 is provided on the top surface of the volute body 21, and the volute tongue 215 and the fourth profile 214 are respectively connected to the opposite sides of the volute air outlet 216.

[0041] Based on the above structure, the volute body 21 also includes an annular volute shroud 217. The volute tongue 215, the first profile 211, the second profile 212, the third profile 213, the fourth profile 214, and the volute outlet 216 form an annular volute side plate, which encloses a continuous space. This continuous space and the volute side plate form two annular openings, and the volute shroud 217 connects to one opening of the volute side plate. An arc-shaped transition surface 218 is formed between the volute shroud 217 and the volute side plate, resulting in smoother airflow and lower noise at the junction of the volute shroud 217 and the volute side plate.

[0042] To reduce airflow leakage from the gaps in the fan assembly 2, in this embodiment, the volute body 21, the volute support 22, and the rear duct plate 26 are integrally injection molded. The volute body 21 has no gaps, ensuring airflow only through the designed channels and preventing leakage. This results in smoother gas flow, stronger negative pressure within the range hood, and more thorough collection and emission of fumes.

[0043] like Figures 4 to 6 As shown, the fan assembly 2 also includes a main air inlet plate 23, which is detachably connected to the volute body 21. The range hood also includes a connected motor 25 and impeller 27. The impeller 27 is installed in a through-space within the volute body 21. The motor 25 is connected to the volute enclosure plate 217, and the main air inlet plate 23 covers the opening on the other side of the volute side plate. The volute enclosure plate 217 and the main air inlet plate 23 abut against the impeller 27 from both ends, preventing displacement of the impeller 27 along its axis and ensuring safer use.

[0044] The specific connection structure between the main air intake plate 23 and the volute body 21 is not limited. In this embodiment, the main air intake plate 23 is detachably connected to the volute body 21 by bolts or other connecting parts.

[0045] The material of the main air intake plate 23 is not limited, as long as it can prevent the impeller 27 from moving along the axis. In this embodiment, the main air intake plate 23 is die-cast from sheet metal or injection molded, which has high processing efficiency, mature processing technology, and low cost.

[0046] To improve the connection stability between the motor 25 and the volute casing 217, in this embodiment, during the injection molding of the volute casing body 21, four support feet 24 are placed at appropriate positions in the injection mold. After adding injection molding material and molding, the support feet 24 are firmly embedded in the volute casing 217. The motor 25 or motor bracket is fixedly connected to the support feet 24 by bolts, rivets, or other connectors, thus achieving a stable connection between the motor 25 and the volute casing 217, preventing the motor 25 from shaking, and making it safer to use.

[0047] The specific shape and material of the support foot 24 are not limited, as long as it can stably connect to the motor 25. In this embodiment, the support foot 24 is made of metal, which has high strength and good load-bearing capacity.

[0048] Based on the above structure, the volute body 21 also includes an annular air inlet ring 219. The air inlet ring 219 is fixed to the main air inlet plate 23, that is, the air inlet ring 219 and the volute casing plate 217 are respectively connected to the opening ends on opposite sides of the volute side plate. During installation, the impeller 27 enters the through space from the opening end of the volute side plate away from the volute casing plate 217. After the impeller 27 and the motor 25 are installed, the air inlet ring 219 and the main air inlet plate 23 are connected to the opening end, thereby fixing the impeller 27 in the through space and forming a complete air duct.

[0049] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A range hood, characterized in that, include: The housing assembly (1) includes a duct housing (12) and a housing top plate (13), wherein an accommodating cavity (11) is formed between the duct housing (12) and the housing top plate (13); The fan assembly (2) includes a volute body (21) and a volute support (22) connected to each other. The fan assembly (2) is located in the accommodating cavity (11), and the volute support (22) is connected to the inner wall surface of the outer shell top plate (13). as well as, The air duct back plate (3) is connected to the air duct housing (12), and the air duct back plate (3) blocks the opening end of the accommodating cavity (11).

2. The range hood according to claim 1, characterized in that, The fan assembly (2) also includes a main air inlet plate (23) that is detachably connected to the volute body (21), and the volute body (21) and the volute support (22) are integrally formed.

3. The range hood according to claim 2, characterized in that, The volute body (21) includes a first section surface (211), a second section surface (212), a third section surface (213), and a fourth section surface (214) that are smoothly connected in sequence. The first section surface (211) is connected to the volute tongue (215) of the volute body (21). The volute tongue (215) and the fourth section surface (214) are respectively connected to the opposite sides of the volute air outlet (216).

4. The range hood according to claim 3, characterized in that, The main body of the volute (21) also includes an annular volute surround plate (217). The volute tongue (215), the first section surface (211), the second section surface (212), the third section surface (213), and the fourth section surface (214) form a volute side plate. The volute surround plate (217) is connected to one side opening of the volute side plate. A transition arc surface (218) is formed between the volute surround plate (217) and the volute side plate.

5. The range hood according to claim 4, characterized in that, The range hood also includes a motor (25), and a support foot (24) is embedded in the volute enclosure (217), and the motor (25) is fixedly connected to the support foot (24).

6. The range hood according to claim 5, characterized in that, The support foot (24) is made of metal material and is located in the injection mold during the injection molding process of the volute body (21).

7. The range hood according to claim 4, characterized in that, The volute body (21) also includes an annular air inlet ring (219), which is connected to the openings on opposite sides of the volute side plate and the volute casing plate (217), respectively.

8. The range hood according to any one of claims 1 to 7, characterized in that, The volute support (22) includes a support tube (221), a support tube reinforcing rib (222), and an arched base (223). The support tube (221) is vertically arranged, and the arched base (223) is connected between the support tube (221) and the volute body (21). The support tube reinforcing rib (222) is connected to the side wall of the support tube (221), and the extension direction of the support tube reinforcing rib (222) is consistent with the extension direction of the support tube (221).

9. The range hood according to claim 8, characterized in that, The volute support (22) also includes a base reinforcing rib (224), which is located in the space enclosed by the arched base (223) and the volute body (21), and is connected between the arched base (223) and the volute body (21).

10. The range hood according to any one of claims 1 to 7, characterized in that, The volute support (22) is fixedly connected to the inner wall surface of the top plate (13) of the outer shell; and / or, The inner wall surface of the top plate (13) of the outer shell is provided with a hook, and the volute bracket (22) is hung on the hook.

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