A noise reduction structure of a range hood and a range hood with the same
By installing noise reduction components, including brackets and noise reduction layers, at the bottom of the range hood's fan housing, and utilizing diversion plates and oil guide pipes to reduce noise, the problems of noise and structural complexity of the range hood are solved, achieving both noise reduction effect and cost optimization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- VATTI CORP LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-21
AI Technical Summary
Existing range hoods have significant noise problems when increasing fan speed to overcome the resistance of the flue network, and existing noise reduction measures increase the complexity of product structure and cost.
The noise reduction components at the bottom of the air handling unit include a bracket and a noise reduction layer. Through the integrated design of the support plate, oil receiving box and oil guide pipe, combined with the diversion plate and noise reduction layer, noise is diverted, reduced and absorbed, simplifying the structure and reducing costs.
It effectively reduces the noise of range hoods, simplifies the structure, reduces production costs, and improves installation convenience.
Smart Images
Figure CN224534328U_ABST
Abstract
Description
Technical Field
[0001] This utility model application relates to the field of kitchen electrical technology, and in particular to a noise reduction structure for a range hood and a range hood having the same structure. Background Technology
[0002] With the improvement of living standards, the requirements for the fume removal effect of range hoods are getting higher and higher. Manufacturers usually increase the fan speed to overcome the resistance of the flue mesh, which leads to increasingly prominent noise problems. Noise reduction for range hoods typically involves adding noise-reducing cotton to the inner wall of the range hood housing or around the fan enclosure. However, after adding noise-reducing cotton around the fan enclosure, an oil drip tray also needs to be connected, making the product structure more complex and costly. How to reduce product noise, improve installation convenience, and reduce production costs while meeting the requirements of high air volume and high static pressure has become a key research focus for manufacturers. Utility Model Content
[0003] This utility model provides a noise reduction structure for a range hood and a range hood having the same, so as to at least solve some of the above-mentioned technical problems existing in the prior art.
[0004] Therefore, the first aspect of this utility model provides a noise reduction structure for a range hood.
[0005] The second aspect of this utility model provides a range hood.
[0006] In a first aspect, this utility model embodiment provides a noise reduction structure for a range hood, including a fan cabinet. The fan cabinet has a volute plate and two side plates forming a cavity. The fan cabinet has an air inlet and an air outlet. A noise reduction component is provided at the bottom of the fan cabinet. The noise reduction component includes a bracket and a noise reduction layer. The bracket includes a support plate and an oil guide pipe. The support plate is connected to the bottom of the fan cabinet, and a noise reduction cavity is formed between the support plate and the fan cabinet. The noise reduction layer is disposed in the noise reduction cavity. The bottom of the support plate is recessed downward to form an oil receiving box. The oil receiving box is opposite to the oil leakage hole of the fan cabinet. A diversion plate is provided above the oil receiving box, which is opposite to the oil leakage hole of the fan cabinet. An oil hole is provided on the bottom surface of the oil receiving box. The oil guide pipe is located on the outer side of the bottom of the oil receiving box and communicates with the oil hole.
[0007] As an optional implementation, the support plate has guide plates on both sides opposite to the two side plates, a groove is formed between the two guide plates, the bottom of the air handling unit is located in the groove, and an overflow gap is formed between the two guide plates and the corresponding side plates; the distance between the two guide plates gradually increases in the direction away from the support plate.
[0008] As an optional implementation, at least one of the guide plates has a notch at the upper edge of the portion opposite to the oil receiving box, the notch forming a flow guide groove; the support plate has connecting plates on both sides along the spiral direction of the worm gear, the connecting plates being connected to the worm gear.
[0009] As an optional implementation, the support plate, oil receiving box, and oil guide pipe are integrally formed.
[0010] As an optional implementation, the diverter plate is one of an upwardly convex arc shape, a downwardly concave arc shape, or a flat plate; the bottom of the diverter plate is connected to the inner wall of the support plate.
[0011] As an optional implementation, the support plates on both sides of the oil receiving box are provided with several sound-absorbing holes.
[0012] As an optional implementation, the noise reduction layer is provided with through holes corresponding to the diverter plate.
[0013] As an optional implementation, the oil receiving box is shaped like a bucket, wider at the top and narrower at the bottom.
[0014] As an optional implementation, the diameter of the oil guide pipe is larger than the diameter of the oil leakage hole of the blower.
[0015] To achieve the second aspect of this utility model, the technical solution of this utility model provides a range hood, including the range hood noise reduction structure as described in any of the first aspects.
[0016] One embodiment of this utility model has the following advantages or beneficial effects:
[0017] The noise reduction structure of the range hood according to this utility model embodiment includes a fan cabinet, the fan cabinet having a surrounding panel forming a cavity, and the fan cabinet having an air inlet and an air outlet. The noise reduction component is characterized by a noise reduction assembly located below the bottom of the fan cabinet, the noise reduction assembly including a bracket and a noise reduction layer, the bracket including a support plate and an oil guide pipe, the support plate being connected to the bottom of the fan cabinet, and a noise reduction cavity being formed between the support plate and the fan cabinet, the noise reduction layer being disposed within the noise reduction cavity, the bottom of the support plate being recessed to form an oil receiving box, the oil receiving box being opposite to the oil leakage hole of the fan cabinet, a diversion plate being located above the oil receiving box opposite to the oil leakage hole of the fan cabinet, an oil hole being provided on the bottom surface of the oil receiving box, and the oil guide pipe being located on the outer side of the bottom of the oil receiving box and communicating with the oil hole. By setting up a noise reduction component, the support plate, oil receiving box, and oil guide pipe of the noise reduction component are integrated into a whole, simplifying the structure, reducing costs, and improving production efficiency. By setting up a diversion plate opposite to the oil leakage hole of the blower, the aerodynamic noise generated by the high-speed airflow ejected from the oil leakage hole of the blower is diverted and reduced through the diversion plate, effectively reducing the noise of the range hood.
[0018] The range hood of this technical solution includes the noise reduction structure of any of the technical solutions of this utility model, and therefore has all the technical effects of the noise reduction structure of any of the technical solutions of this utility model.
[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the structure of this utility model;
[0022] Figure 2 This is a structural schematic diagram of the noise reduction component of this utility model;
[0023] Figure 3 This is a structural schematic diagram of the new utility model bracket;
[0024] Figure 4 This is a structural schematic diagram of the noise reduction component of this utility model from another perspective.
[0025] The reference numerals in the attached drawings are explained as follows: 1. Air handling unit; 11. Centrifugal fan; 12. Air inlet; 13. Air outlet; 2. Noise reduction component; 21. Bracket; 211. Support plate; 2111. Oil collection box; 2112. Oil hole; 2113. Guide plate; 2114. Flow channel; 2115. Sound absorption hole; 212. Oil guide pipe; 22. Noise reduction layer; 221. Through hole; 23. Diverter plate; 3. Overflow gap. Detailed Implementation
[0026] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.
[0027] The terms “a,” “one,” “the,” and “” are used to indicate the existence of one or more elements / components / etc.; the terms “include” and “have” are used to indicate an open-ended meaning of inclusion and that there may be other elements / components / etc. in addition to the listed elements / components / etc.
[0028] like Figure 1 As shown, a noise reduction structure for a range hood includes a fan cabinet 1. The fan cabinet 1 has a volute and two side plates forming a cavity. A centrifugal fan 11 is installed inside the cavity. The fan cabinet 1 has an air inlet 12 and an air outlet 13. A noise reduction component 2 is installed at the bottom of the fan cabinet 1. The noise reduction component 2 includes a bracket 21 and a noise reduction layer 22.
[0029] like Figure 2 , 3 As shown, the bracket 21 includes a support plate 211 and an oil guide pipe 212. The support plate 211 is connected to the bottom of the air handling unit 1, and a noise reduction cavity is formed between the support plate 211 and the air handling unit 1. The noise reduction layer 22 is disposed in the noise reduction cavity. The bottom of the support plate 211 is recessed downward to form an oil receiving box 2111. The oil receiving box 2111 is opposite to the oil leakage hole of the air handling unit 1. A diversion plate 23 is provided above the oil receiving box 2111, which is opposite to the oil leakage hole of the air handling unit 1. An oil hole 2112 is provided on the bottom surface of the oil receiving box 2111. The oil guide pipe 212 is located on the outside of the bottom of the oil receiving box 2111 and communicates with the oil hole 2112. The bottom end of the oil guide pipe 212 is located in the oil guide groove of the oil mesh inside the smoke collection hood.
[0030] The air inlet 12 is set horizontally, and the air outlet 13 can be set vertically or horizontally. The diverter plate 23 is opposite to the oil leakage hole of the air handling unit 1. When the air discharged from the air handling unit 1 is sprayed out from the oil leakage hole of the air handling unit 1, the airflow is sprayed onto the diverter plate 23. The diverter plate 23 can disperse the airflow to the surrounding area and be absorbed by the surrounding noise reduction layer 22, thereby achieving the purpose of noise reduction.
[0031] In one embodiment, the support plate 211 has guide plates 2113 on both sides opposite to the two side plates, and a groove is formed between the two guide plates 2113. The bottom of the air handling unit 1 is located in the groove, and an overflow gap 3 is formed between the two guide plates 2113 and the corresponding side plates. The distance between the two guide plates 2113 gradually increases in the direction away from the support plate 211, that is, the two guide plates 2113 are inclined outward.
[0032] The guide plate 2113 can receive the oil on the volute plate and the two side plates of the air handling unit 1, and continuously guide it into the oil receiving box 2111, and finally flow through the oil guide pipe 212 into the oil guide groove of the oil mesh in the smoke collection hood.
[0033] When the oil on the volute plate and the two side plates of the blower 1 flows to the overflow gap 3 of the support plate 211, the guide plate 2113 blocks and collects more oil per unit time and guides it into the oil receiving box 2111 at the bottom of the support plate 211, and then flows into the oil guide groove of the oil mesh in the smoke hood through the oil guide pipe 212.
[0034] In one embodiment, at least one guide plate 2113 has a notch at the upper edge of the part opposite to the oil receiving box 2111, and the notch forms a guide groove 2114; the support plate 211 has connecting plates on both sides along the spiral direction of the worm plate, and the connecting plates are connected to the worm plate to realize the connection and fixation of the noise reduction component 2 and the air handling unit 1.
[0035] When the oil hole 2112 on the oil collection box 2111 is easily clogged with oil after long-term use, a guide groove 2114 is set near the oil collection box 2111 on the guide plate 2113. When the oil collection box 2111 is full of sewage and oil, it can flow out from the guide groove 2114. Since the guide groove 2114 is opposite to the oil collection box 2111, the oil flowing out from the guide groove 2114 flows along the outer wall of the oil collection box 2111 to the oil guide pipe 212, and finally flows from the outer wall of the oil guide pipe 212 to the oil guide groove of the oil mesh in the fume hood. This prevents the oil in the oil collection box 2111 from flowing to the outside of the oil guide groove of the oil mesh in the fume hood and overflowing and dripping onto the stove when the oil hole 2112 is clogged.
[0036] In one embodiment, in order to reduce production costs and facilitate product assembly, the support plate 211, the oil receiving box 2111, and the oil guide pipe 212 are integrally formed.
[0037] The diverter plate 23 is one of the following: convex arc shape, concave arc shape, or flat plate. In this embodiment, the diverter plate 23 is convex arc shape.
[0038] In this embodiment, the bottom of the diversion plate 23 is connected to the inner wall of the support plate 211. As long as the diversion plate 23 above the oil receiving box 2111 is aligned with the oil leakage hole of the air handling unit 1, the connection method between the diversion plate 23 and the support plate 211 is not limited.
[0039] The diverter 23 can be configured with different shapes according to the product's usage environment and requirements in order to achieve the required noise reduction.
[0040] The support plates 211 on both sides of the oil receiving box 2111 are provided with several sound-absorbing holes 2115. By providing several sound-absorbing holes 2115, the noise reduction layer 22 can absorb noise through the sound-absorbing holes 2115, thereby improving the noise reduction effect.
[0041] In order to ensure that the air sprayed from the oil leakage hole of the air handling unit 1 can be smoothly sprayed onto the diverter plate 23 to improve the noise reduction effect, the noise reduction layer 22 is provided with through holes 221 corresponding to the diverter plate 23.
[0042] like Figure 4 As shown, the oil receiving box 2111 in this embodiment is shaped like a bucket with a larger top and a smaller bottom. The oil hole 2112 is located at the bottom of the oil receiving box 2111. The oil guide pipe 212 is connected to the oil hole 2112. This arrangement ensures that the oil in the oil receiving box 2111 can flow smoothly into the oil guide pipe 212.
[0043] In one embodiment, in order to ensure that the wastewater from cleaning the blower can be discharged more quickly and does not accumulate in the oil collection box 2111 during cleaning, the diameter of the oil guide pipe 212 is larger than the diameter of the oil leakage hole of the blower 1.
[0044] In one embodiment, the present invention provides a range hood including a range hood noise reduction structure as described in any one of the present invention for noise reduction.
[0045] The range hood of this technical solution includes the noise reduction structure of any of the technical solutions of this utility model, and therefore has all the technical effects of the noise reduction structure of any of the technical solutions of this utility model.
[0046] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "install," "connect," and "fix" should be interpreted broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.
[0047] In the description of the embodiments of this utility model, it should be understood that the terms "upper" and "lower" 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 the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.
[0048] In this specification, the terms "an embodiment," "a preferred embodiment," etc., refer 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 the present invention. 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 any suitable manner in one or more embodiments or examples.
[0049] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A noise reduction structure for a range hood, comprising a fan housing (1), wherein the fan housing (1) has a volute and two side plates forming a cavity, and the fan housing (1) has an air inlet (12) and an air outlet (13), characterized in that, A noise reduction component (2) is provided below the bottom of the air handling unit (1). The noise reduction component (2) includes a bracket (21) and a noise reduction layer (22). The bracket (21) includes a support plate (211) and an oil guide pipe (212). The support plate (211) is connected to the bottom of the air handling unit (1), and a noise reduction cavity is formed between the support plate (211) and the air handling unit (1). The noise reduction layer (22) is disposed in the noise reduction cavity. The bottom of 211) is recessed downward to form an oil receiving box (2111). The oil receiving box (2111) is opposite to the oil leakage hole of the air handling unit (1). A diversion plate (23) is provided above the oil receiving box (2111) and is opposite to the oil leakage hole of the air handling unit (1). An oil hole (2112) is provided on the bottom surface of the oil receiving box (2111). The oil guide pipe (212) is located on the outside of the bottom of the oil receiving box (2111) and communicates with the oil hole (2112).
2. The noise reduction structure for a range hood according to claim 1, characterized in that, The support plate (211) has guide plates (2113) on both sides opposite to the two side plates. A groove is formed between the two guide plates (2113). The bottom of the air handling unit (1) is located in the groove. An overflow gap (3) is formed between the two guide plates (2113) and the corresponding side plates. The distance between the two guide plates (2113) gradually increases in the direction away from the support plate (211).
3. The noise reduction structure for a range hood according to claim 2, characterized in that, At least one of the guide plates (2113) has a notch at the upper edge of the portion opposite to the oil receiving box (2111), the notch forming a guide groove (2114); the support plate (211) has connecting plates on both sides along the spiral direction of the volute plate, the connecting plates being connected to the volute plate.
4. The noise reduction structure for a range hood according to claim 1, characterized in that, The support plate (211), oil receiving box (2111), and oil guide pipe (212) are integrally formed.
5. The noise reduction structure for a range hood according to claim 1, characterized in that, The diverter plate (23) is one of an upwardly convex arc shape, a downwardly concave arc shape, or a flat plate; the bottom of the diverter plate (23) is connected to the inner wall of the support plate (211).
6. The noise reduction structure for a range hood according to claim 1, characterized in that, The oil receiving box (2111) has several sound-absorbing holes (2115) on the support plates (211) on both sides.
7. The noise reduction structure for a range hood according to claim 1, characterized in that, The noise reduction layer (22) is provided with through holes (221) corresponding to the diverter plate (23).
8. The noise reduction structure for a range hood according to claim 1, characterized in that, The oil receiving box (2111) is shaped like a bucket, wider at the top and narrower at the bottom.
9. The noise reduction structure for a range hood according to claim 1, characterized in that, The diameter of the oil guide pipe (212) is larger than the diameter of the oil leakage hole of the blower (1).
10. A range hood, characterized in that, The range hood noise reduction structure includes any one of claims 1-9.