Fan system and extractor hood
By forming an integral fixed bracket on the bottom plate of the volute, the problems of complex motor bracket structure and resonance noise in the prior art are solved, which simplifies the fan system, reduces costs, and improves stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG MACRO GAS APPLIANCE
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-24
AI Technical Summary
In existing wind turbine systems, the impeller and motor need to be fixed to the volute via a motor bracket. The motor bracket has a complex structure, high cost, and is prone to resonance noise.
The design adopts a fixed bracket formed on the volute base plate and integrally molded with the base plate body. The motor is fixed on the fixed bracket, eliminating the need for an additional bracket. The fixed bracket is formed flat by stamping to improve stability and reduce noise.
It simplifies the structure of the wind turbine system, reduces costs, and effectively avoids resonance noise problems between the volute and the fixed support.
Smart Images
Figure CN224550383U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of kitchen exhaust equipment technology, specifically to a fan system and a kitchen exhaust fan. Background Technology
[0002] A range hood, also known as a kitchen exhaust hood, is a kitchen appliance that purifies the kitchen environment by exhausting cooking fumes from indoors to outdoors. It typically consists of a smoke collection chamber and a casing assembly. Range hoods are generally installed above the kitchen stove to quickly remove harmful cooking fumes and waste produced during combustion and vent them outdoors.
[0003] To improve the smoke extraction effect of range hoods, range hoods are usually equipped with a fan system. The fan system includes a volute, a motor and an impeller. The motor is connected to the volute, which has an inlet and an outlet. The inlet is connected to the smoke inlet of the range hood, and the outlet is connected to the outside environment. It can exhaust the fumes from the smoke inlet of the range hood through the impeller and the volute to the outside environment.
[0004] However, in the relevant wind turbine system technology, the impeller and motor need to be fixed to the volute by the motor bracket. The motor bracket is set on the volute, which has a complex structure, high cost, and is prone to resonance noise between the motor bracket and the volute. Utility Model Content
[0005] In view of the above-mentioned defects in the prior art, the present invention provides a fan system and a range hood to solve at least one of the above-mentioned technical defects in the prior art, making the structure of the volute simpler and the cost lower, and avoiding the problem of resonance noise in the volute, thereby reducing the noise of the fan system.
[0006] A second aspect of this utility model also provides a range hood.
[0007] To achieve the purpose of this utility model, a fan system is provided, comprising:
[0008] The volute body has a receiving cavity, and the impeller is disposed in the receiving cavity;
[0009] The volute base plate includes the base plate body and the fixing bracket.
[0010] The base plate is detachably mounted on the volute body, and the volute base plate forms the fixed support, which is integrally formed with the base plate.
[0011] Preferably, the fixing bracket has a first plane, a second plane, and a third plane arranged sequentially along a first direction.
[0012] The first plane coincides with the first side surface of the base plate body.
[0013] The base plate body is recessed along the first direction to form the second plane, and the base plate body is stretched along the first direction to form the third plane and the fifth curved surface. The fifth curved surface is located at the transition connection between the second plane and the third plane.
[0014] Preferably, the first plane, the second plane, and the third plane are arranged parallel to each other.
[0015] Preferably, the second plane forms a first height difference with the first plane, and the third plane forms a second height difference with the second plane.
[0016] Preferably, the first height difference is t1, and the second height difference is t2.
[0017] Where t1≤5mm, t2≥20mm.
[0018] Preferably, the fifth curved surface is provided with multiple air inlets.
[0019] Preferably, the air inlets are evenly distributed on the fifth curved surface, and each air inlet has the same area and shape.
[0020] Reinforcing ribs are provided between adjacent air inlets.
[0021] Preferably, the base plate body is recessed along the first direction to form a fourth plane.
[0022] The fourth plane and the first plane form a third height difference t3.
[0023] Where 0.5mm≤t3≤3mm.
[0024] Preferably, the inner edges of the first plane, the second plane, and the third plane are all circular.
[0025] The first plane, the second plane, and the third plane are all coaxially arranged.
[0026] The second aspect of this utility model provides a range hood, including the aforementioned fan system and range hood body.
[0027] The fan system is located on the main body of the range hood.
[0028] The beneficial effects of this utility model are as follows: The fan system provided by this utility model forms a fixed bracket on the bottom plate of the volute, and the fixed bracket and the bottom plate body are integrally formed. The motor can be fixed on the fixed bracket, which makes the structure of the fan system simpler, eliminates the need for additional brackets, and reduces costs. Moreover, since the fixed bracket and the bottom plate body are integrally formed, the problem of resonance noise between the fixed bracket and the bottom plate of the volute is not easily generated.
[0029] The range hood provided by this utility model, since it includes the aforementioned fan system, inevitably possesses all the advantages of that component. That is, the range hood also eliminates the need for an additional support bracket, resulting in lower costs; moreover, because the fixed bracket and the base plate are integrally molded, the problem of resonance noise between the fixed bracket and the volute base plate is less likely to occur. Attached Figure Description
[0030] The above and other objects, features, and advantages of this utility model will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this application.
[0031] Figure 1 A schematic diagram of the overall structure of the volute body in the fan system provided for an embodiment of this utility model;
[0032] Figure 2 A schematic diagram of the structure of the volute base plate in the fan system provided for an embodiment of this utility model;
[0033] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.
[0034] 100. Volute body; 110. Receiving cavity; 120. Volute casing shroud; 130. Volute casing cover;
[0035] 200. Volute base plate; 210. Base plate body; 220. Fixing bracket; 221. First plane; 222. Second plane; 223. Third plane; 225. Fifth curved surface; 2251. Air inlet; 2252. Reinforcing rib;
[0036] 300. Fourth plane; 310. Reinforcing rib;
[0037] 400. Volute flange. Detailed Implementation
[0038] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.
[0039] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.
[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this applies. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0041] The following is combined Figures 1 to 3 The embodiments of this utility model will be described below. It should be understood that the following description is merely an illustrative embodiment of this utility model and does not constitute any limitation on this utility model.
[0042] Combination Figures 1 to 3 This utility model provides a fan system installed on a range hood. The fan system includes a volute assembly, a motor, and an impeller. The volute assembly includes a volute base plate, a volute surround plate, and a volute top plate.
[0043] The fan system includes a volute body 100 and a volute base plate 200. The volute body 100 can be formed by a volute enclosure plate 120 and a volute cover 130.
[0044] The volute body 100 has a receiving cavity 110, and the impeller can be disposed in the receiving cavity 110. The receiving cavity 110 can be formed by connecting the volute bottom plate, the volute side plate, and the volute top plate.
[0045] The volute base plate 200 includes a base plate body 210 and a fixing bracket 220.
[0046] A detachable cover for the base plate body 210 is mounted on the volute body 100. The base plate body 210 can be fixedly connected to the volute body 100 with screws, facilitating installation and disassembly. The volute base plate 200 forms a fixed bracket 220, which is integrally formed with the base plate body 210, eliminating the need for an additional bracket and saving costs. The motor can be fixed to the fixed bracket 220 and is connected to the impeller drive. When the motor starts, the impeller rotates within the receiving cavity 110 to achieve smoke extraction.
[0047] It is understood that the fan system provided in the embodiments of this utility model, by forming a fixed bracket 220 on the volute base plate 200, and the fixed bracket 220 being integrally formed with the base plate body 210, allows the motor to be fixed on the fixed bracket 220, making the structure of the fan system simpler, eliminating the need for additional brackets, and reducing costs; moreover, since the fixed bracket 220 and the base plate body 210 are integrally formed, the problem of resonance noise between the fixed bracket 220 and the volute base plate 200 is not easily generated.
[0048] Specifically. Combined Figure 2 and Figure 3 In some embodiments of this utility model, the fixed bracket 220 is provided with a first plane 221, a second plane 222, and a third plane 223 arranged sequentially along a first direction. The first direction is the axial direction along the first side of the base plate body 210 moving towards the second side.
[0049] The first plane 221 coincides with the first side surface of the base plate body 210, making the surface of the volute base plate 200 flatter.
[0050] The base plate body 210 is recessed along a first direction to form a second plane 222. The base plate body 210 is stretched along the first direction to form a third plane 223 and a fifth curved surface 225. The fifth curved surface 225 provides a transition connection between the second plane 222 and the third plane 223, that is, the second plane 222 is connected to the third plane 223 through the fifth curved surface 225. This allows the first plane 221, the second plane 222, the third plane 223, and the fifth curved surface 225 to be formed in one step by stamping, making manufacturing more convenient, efficient, and cost-effective.
[0051] In addition, combined Figure 2 In some embodiments of this utility model, the first plane 221, the second plane 222, and the third plane 223 are arranged parallel to each other. This makes the fixing bracket 220 flatter, better securing the motor, preventing loosening, and further avoiding resonance noise.
[0052] Furthermore, the second plane 222 forms a first height difference with the first plane 221, and the third plane 223 forms a second height difference with the second plane 222, which allows the fixed bracket 220 to fit more closely with the shaft shoulder of the motor, thus improving stability.
[0053] Specifically, the first height difference is t1, where t1 ≤ 5mm, for example, t1 can be 5mm or 2mm. The second height difference is t2, where t2 ≥ 20mm, for example, t2 can be 20mm or 30mm. This is to avoid excessive height differences that could affect the stability of the stationary motor.
[0054] Combination Figure 1In some embodiments of this utility model, the fifth curved surface 225 is provided with multiple air inlets 2251. The air inlets 2251 can not only ventilate the receiving cavity 110 inside the volute body 100, but also reduce the material required to form the fixed support 220, thereby further saving costs.
[0055] Combination Figure 2 and Figure 3 In some embodiments of this utility model, the air inlets 2251 are evenly distributed on the fifth curved surface 225, and each air inlet 2251 has the same area and shape.
[0056] A reinforcing rib 2252 is provided between each adjacent air inlet 2251. This makes the structure of the fixed bracket 220 more stable, thereby improving the stability of the fixed bracket 220 in supporting the motor.
[0057] Combination Figure 1 In some embodiments of this utility model, the base plate body 210 is recessed along the first direction to form a fourth plane 300.
[0058] The fourth plane 300 and the first plane 221 form a third height difference t3, where 0.5mm≤t3≤3mm, for example, t3 can be 1mm or 2mm. The third height difference between the fourth plane 300 and the first plane 221 creates a raised reinforcing rib 310 at the bottom plate 200 of the volute, which can increase the strength of the bottom plate 200 of the volute.
[0059] The volute body 100 is also provided with a volute flange 400, which is vertically connected to the fourth plane 300, making it convenient for the fan system to be installed on the range hood.
[0060] Combination Figures 1 to 3 In an embodiment of this utility model, a range hood is also provided, which includes the aforementioned fan system and range hood body.
[0061] The fan system is installed on the main body of the range hood.
[0062] It is understandable that the range hood provided by this utility model, since it includes the aforementioned fan system, will inevitably possess all the advantages of this component. That is, the range hood does not require an additional bracket, resulting in lower costs; moreover, since the fixed bracket 220 and the base plate body 210 are integrally formed, the fixed bracket 220 and the volute base plate 200 are less prone to resonance noise issues.
[0063] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of 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.
[0064] In the description of this specification, the use of terms such as "preferred embodiment," "another embodiment," "some embodiments," "other embodiments," or "specific example," etc., refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0065] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A fan system, installed in a range hood, the fan system comprising a motor and an impeller, characterized in that, The fan system includes: The volute body has a receiving cavity, and the impeller is disposed in the receiving cavity; The volute base plate includes the base plate body and the fixing bracket. The base plate is detachably mounted on the volute body, and the volute base plate forms the fixed bracket, which is integrally formed with the base plate.
2. The fan system as described in claim 1, characterized in that, The fixed bracket has a first plane, a second plane, and a third plane arranged sequentially along a first direction. The first plane coincides with the first side surface of the base plate body. The base plate body is recessed along the first direction to form the second plane, and the base plate body is stretched along the first direction to form the third plane and the fifth curved surface. The fifth curved surface is located at the transition connection between the second plane and the third plane.
3. The fan system as described in claim 2, characterized in that, The first plane, the second plane, and the third plane are arranged parallel to each other.
4. The fan system as described in claim 3, characterized in that, The second plane forms a first height difference with the first plane, and the third plane forms a second height difference with the second plane.
5. The fan system as described in claim 4, characterized in that, The first height difference is t1, and the second height difference is t2. Where t1≤5mm, t2≥20mm.
6. The fan system as described in claim 5, characterized in that, The fifth curved surface is provided with multiple air inlets.
7. The fan system as described in claim 6, characterized in that, The air inlets are evenly distributed on the fifth curved surface, and each air inlet has the same area and shape. Reinforcing ribs are provided between adjacent air inlets.
8. The fan system as described in claim 7, characterized in that, The base plate body is recessed along the first direction to form a fourth plane. The fourth plane and the first plane form a third height difference t3. Where 0.5mm≤t3≤3mm.
9. The fan system according to any one of claims 2 to 8, characterized in that, The inner edges of the first plane, the second plane, and the third plane are all circular. The first plane, the second plane, and the third plane are all coaxially arranged.
10. A range hood, characterized in that, Includes the fan system and range hood body as described in any one of claims 1 to 9. The fan system is located on the main body of the range hood.