A double volute shell for a range hood
By designing the range hood shell and volute as an integrated structure, the problems of bulkiness and material waste in dual volute components of range hoods are solved, achieving the effects of lightweighting and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG VEZSIN ELECTRICAL
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-26
AI Technical Summary
The existing range hoods have independent and bulky dual-volume components, and their structure still has room for simplification. In addition, they use a large amount of materials, resulting in high costs.
The volute and the range hood's outer shell are made into a single structure. The range hood's outer shell partially replaces the front panel and surrounding panel of the volute. Combined with the design of the transition plate and ventilation holes, the dual-volute function is achieved while reducing the amount of material used.
This achieves a reduction in overall weight, saves materials, lowers production costs, and makes the range hood appear thinner, reducing its space occupation.
Smart Images

Figure CN224415218U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of range hoods, and specifically refers to a double volute outer shell for range hoods. Background Technology
[0002] A range hood, also known as a cooking hood, is a kitchen appliance used to purify the kitchen environment. Installed above the stove, it quickly removes waste from combustion and harmful fumes produced during cooking, expelling them outdoors. It also condenses and collects these fumes, reducing pollution, purifying the air, and providing safety features such as protection against toxic substances and explosions.
[0003] The volute of a range hood is usually a single volute, which can only accommodate one motor and one impeller, and is asymmetrical. Some range hoods require two volutes, one on each side, making them symmetrical. A few range hoods design the two volutes as one unit, symmetrical, and can accommodate two motors and two impellers on each side, such as the double volute assembly shown in CN118998100A.
[0004] In the aforementioned dual-volute assembly, the volute assembly itself is relatively independent and can be disassembled independently of the range hood, but it is relatively bulky overall, and there is still room for simplification in its structure.
[0005] Therefore, the inventors conducted further research and developed a double volute outer shell for range hoods, which led to this invention. Utility Model Content
[0006] The purpose of this utility model is to provide a double volute shell for a range hood, which integrates the volute shell with the range hood shell into a single structure, thereby reducing the overall weight and saving materials.
[0007] To achieve the above objectives, the technical solution of this utility model is as follows:
[0008] A double-volute housing for a range hood, comprising:
[0009] A first volute casing plate, a second volute casing plate, and a partition is provided between the first volute casing plate and the second volute casing plate;
[0010] One side of the first volute enclosure and the second volute enclosure is a front plate, and the other side is a rear plate. A top plate is also provided between the front plate and the rear plate. The top plate is connected to the first volute enclosure and the second volute enclosure; and the front plate and the top plate constitute the outer shell of the range hood.
[0011] In a single volute structure, the volute enclosure refers to the arc-shaped part of the volute, while the front and rear panels are only used to distinguish the two sides of the enclosure, and there is no top panel. In the concept of this utility model, a part of the range hood's outer shell replaces the front (or rear) panel and part of the volute enclosure, thereby achieving the function of a dual volute while reducing the amount of sheet metal used in the entire assembly and lowering the manufacturing cost.
[0012] Furthermore, ventilation holes are provided on the rear panel; the partition is located between the ventilation holes.
[0013] The ventilation hole is used to connect the exhaust pipe, and the ventilation hole can be shared by two volutes.
[0014] Furthermore, a straight transition plate is provided between the first volute casing plate and the second volute casing plate.
[0015] Referring to prior art patents, directly splicing two curved panels will result in a deep gap, which is not conducive to manufacturing. Connecting the two panels with a transition plate is simpler.
[0016] Furthermore, wire holes are provided on the transition plate.
[0017] The transition plate also facilitates the creation of wiring holes for threading the wires required for the volute motor.
[0018] By adopting the above solution, this utility model has the following advantages compared with the prior art:
[0019] Reducing the overall size of the range hood reduces the amount of materials required and lowers production costs; it also allows for an ultra-thin range hood design, minimizing the space it occupies. Attached Figure Description
[0020] Figure 1 This is one of the schematic diagrams of this utility model;
[0021] Figure 2 This is the second schematic diagram of this utility model;
[0022] Label Explanation
[0023] Front plate 1, rear plate 2, first volute casing shroud 3, partition 4, second volute casing shroud 5.
[0024] Top panel 6, wiring hole 7. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0026] like Figure 1 , 2As shown, a double-volute casing for a range hood includes a first volute casing plate 3 and a second volute casing plate 5 with arc-shaped structures, and a front plate 1 and a rear plate 2 (with reference to the angle in the figure) covering the upper and lower sides of the first volute casing plate 3 and the second volute casing plate 5. The front plate 1 is connected to the first volute casing plate 3 and the second volute casing plate 5 via an edge trim (reference). Figure 2 (The edging, marked 1 in the diagram, is also part of the front panel 1), while the rear panel 2 is fixed by bolt holes drilled in several mounting plates on the side of the panel.
[0027] Taking the angle shown in the figure as an example, a top plate 6 is provided at the top of the first volute enclosure 3 and the second volute enclosure 5 (right side of the figure). The top plate 6 is equivalent to cutting off part of the structure of the first volute enclosure 3 and the second volute enclosure 5, thus forming the top of the first volute enclosure 3 and the second volute enclosure 5. The rear plate 2 is also equivalent to the "side plate" of the volute. At the same time, the rear plate 2 and the top plate 6 are part of the outer shell of the range hood. Therefore, in this embodiment, part of the outer shell of the range hood becomes part of the outer shell of the volute, saving the material of the overlapping part of the two, which reduces the overall space occupation and also reduces the weight.
[0028] Inside the first volute casing plate 3 and the second volute casing plate 5, they are separated by a partition plate 4, and a ventilation hole is provided at the partition plate 4 for connecting the exhaust pipe for venting oil fumes. At the same time, a straight transition plate is provided between the first volute casing plate 3 and the second volute casing plate 5, and an electrical wire hole 7 is provided on the transition plate for passing through the power cord of the motor that drives the fan inside the volute casing.
[0029] The above are merely specific embodiments of this utility model. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this utility model are for reference only and are not absolute limitations. Any non-substantial modifications made to this utility model shall be considered as infringing upon the protection scope of this utility model.
Claims
1. A double-volute housing for a range hood, characterized in that: include A first volute casing plate, a second volute casing plate, and a partition is provided between the first volute casing plate and the second volute casing plate; One side of the first volute enclosure and the second volute enclosure is a front plate, and the other side is a rear plate. A top plate is also provided between the front plate and the rear plate. The top plate is connected to the first volute enclosure and the second volute enclosure; and the front plate and the top plate constitute the outer shell of the range hood.
2. The double-volute housing for a range hood according to claim 1, characterized in that: Ventilation holes are provided on the rear panel; the partition is located between the ventilation holes.
3. The double-volute housing for a range hood according to claim 1, characterized in that: A straight transition plate is provided between the first volute casing plate and the second volute casing plate.
4. The double-volute housing for a range hood according to claim 1, characterized in that: The transition plate has wire holes.
Citation Information
Patent Citations
Double-volute assembly and range hood
CN118998100A