Oil filtering and noise reduction structure of range hood

Abstract

The present invention discloses an oil filtering and noise reduction structure of a range hood, wherein the range hood comprises a range hood body with an air inlet, an oil net is arranged at the air inlet, a fan is arranged in the range hood body, a plurality of partitions are arranged between the oil net and the fan, a vent is formed between the partition and the side wall of the range hood body, and the partition is arranged obliquely. The structure is simple and the noise reduction performance of the range hood can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to an oil filtering and noise reduction structure of a range hood. Background Art

[0002] In the related art, most range hoods generally use a fume filter structure to filter the grease in the fume, but the condensation area that the fume contacts is small and the time is short, making it difficult to effectively intercept the fume. In order to improve the fume interception effect, structures such as small meshes and multi-layer oil nets have emerged, but this will reduce the porosity of the oil net and reduce the air inlet area, thereby affecting the air volume and noise, and is not conducive to the cleaning of the oil net.

[0003] The oil fume emission of range hoods is one of the important core indicators of environmental protection. How to reduce the oil fume entering the range hood impeller (that is, reducing the difficulty and frequency of cleaning) and the external discharge of oil fume are the demands that users are increasingly concerned about. It can be said that the quality of the oil separation performance of the range hood is a key factor in the product's competitiveness.

[0004] At the same time, as people's requirements for quality of life increase, users are paying more and more attention to the size of range hood noise parameters when purchasing range hoods. It can be said that the quality of range hood noise performance is another key factor in product competitiveness. Summary of the invention

[0005] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes an oil filtering and noise reduction structure for a range hood, which has a simple structure and can effectively improve the noise reduction performance of the range hood.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A range hood oil filter and noise reduction structure, the range hood comprising a range hood body with an air inlet, a fan arranged in the range hood body, a plurality of partitions arranged between the oil net and the fan, a ventilating opening formed between the partition and the side wall of the range hood body, and the partition being arranged at an angle.

[0008] In some embodiments, the partition is tilted downward from a side away from the vent to a side close to the vent.

[0009] In some embodiments, the partition has an inclination angle of 3° to 10°.

[0010] In some embodiments, a plurality of blades are spaced apart on the upper surface of the partition so as to intercept grease in the oil smoke.

[0011] In some embodiments, the cross section of the blade is wavy, and the wave amplitude of the blade on the partition gradually decreases from the oil net toward the fan.

[0012] In some embodiments, the spacing distance between the blades on the partition gradually decreases from the oil net toward the fan.

[0013] In some embodiments, the blade has a trough and a crest, a transition line is formed between the trough and the crest, and an angle between the transition line and a horizontal line is 30° to 60°.

[0014] In some embodiments, the cross section of the blade is straight, broken, curved or arc-shaped.

[0015] In some embodiments, the thickness of the blade is 0.2 mm to 1 mm.

[0016] In some embodiments, the surfaces of the partition and the blades are both covered with an oleophobic and hydrophobic coating.

[0017] In some embodiments, the separator has a thickness of 0.2 mm to 2 mm.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] 1. The oil filtering and noise reduction structure of the range hood controlled by the present invention has a simple structure and can effectively improve the noise reduction performance of the range hood.

[0020] 2. It can also further enhance the oil separation performance of the range hood and effectively improve the oil fume purification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a structural schematic diagram of an oil filter and noise reduction structure of a range hood according to an embodiment of the present invention;

[0022] Figure 2 is a cross-sectional view of the oil filtering and noise reduction structure of a range hood according to an embodiment of the present invention;

[0023] Figure 3 is an exploded schematic diagram of the oil filtering and noise reduction structure of a range hood according to an embodiment of the present invention;

[0024] Figure 4 Schematic diagram of the structure of the blade in the embodiment of the present invention. DETAILED DESCRIPTION

[0025] The following examples illustrate the present invention, but the present invention is not limited to these examples. Modifications to the specific embodiments of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed by the present invention.

[0026] like Figures 1 to 4 As shown, this embodiment provides an oil filtering and noise reduction structure of a range hood, the range hood comprises a range hood body 1 with an air inlet, an oil net 2 is arranged at the air inlet of the range hood body 1, a fan 3 is arranged in the range hood body 1, a plurality of partitions 4 are arranged between the oil net 2 and the fan 3, a ventilation opening 5 is formed between the partition 4 and the side wall of the range hood body 2, and the partition 4 is arranged at an angle.

[0027] In the present embodiment, the range hood comprises a range hood body 1, at the bottom of which an air inlet is provided for allowing external oil smoke to enter the range hood body 1 through the oil net 2, a fan 3 is installed inside the range hood body 1, and the external oil smoke is introduced into the range hood body 1 through the operation of the fan 3, and a plurality of partitions 4 are arranged in the range hood body 1 and between the oil net 2 and the fan 3 to block the noise generated by the fan 3, so that the noise is reflected, thereby reducing the downward propagation of sound to avoid the noise being directly transmitted to the outside of the range hood body 1 through the oil net 2, a fixed end of the partition 4 is arranged on the inner side wall of the range hood body 1, and a free end extends in the opposite direction of the fixed end of the partition 4 to form a vent 5 between the free end of the partition 4 and the inner side wall of the range hood body 1, and the partition 4 is arranged at an angle, so that the range hood can further improve the fluidity of grease on the partition 4 while ensuring strong wind force. In the present embodiment, the number of layers of the partition 4 is preferably set to four layers, but is not limited to four layers. Other more suitable numbers of layers can also be selected according to actual needs, as long as the range hood can better achieve sound isolation. If the number of layers of the partition 4 is set to be less, the noise reduction effect is not obvious. If the number of layers of the partition 4 is set to be more, the resistance to air flow in the range hood body 1 is increased, which in turn has a greater impact on the air volume of the range hood.

[0028] Furthermore, the partition 4 is tilted downward from the side away from the vent 5 to the side close to the vent 5. It has a simple structure and a reasonable design, allowing the grease intercepted by the partition to flow downward by gravity to prevent the grease from being retained inside the range hood.

[0029] Specifically, the inclination angle of the partition 4 is 3° to 10°, and its design is reasonable and ingenious, which can ensure the air volume of the range hood while facilitating the flow of grease from top to bottom.

[0030] In this embodiment, the partition 4 is tilted downward from the fixed end to the free end, that is, in the vertical direction in the range hood body 1, the installation height of the fixed end of the partition 4 is greater than the height of the free end of the partition 4. Of course, the partition 4 can also be set to a suitable tilt direction according to actual needs. In this embodiment, the tilt angle of the partition 4 is 3° to 10°, and more preferably the tilt angle of the partition 4 is 5°, as long as the range hood ensures the fluidity of grease on the partition 4.

[0031] Preferably, a plurality of blades 6 are arranged at intervals on the upper surface of the partition 4 to intercept grease in the oil fume. The blades 6 have a simple structure and can effectively absorb the oil fume, thereby improving the performance of filtering the oil fume.

[0032] Preferably, the cross section of the blade 6 is wavy, and the wave amplitude of the blade 6 on the partition 4 gradually decreases from the oil net 2 to the fan 3. Its reasonable design can increase the contact area between the blade and the oil fume, thereby improving the performance of adsorbing the oil fume.

[0033] Preferably, the spacing between the blades 6 on the partition 4 gradually decreases from the oil net 2 to the fan 3, and its design is reasonable, which can further increase the contact area between the blades and the oil smoke.

[0034] Furthermore, the blade 6 has a trough and a crest, and a transition line is formed between the trough and the crest. The angle between the transition line and the horizontal line is 30° to 60°. The design is reasonable and ingenious, and can further reduce the flow resistance of the range hood.

[0035] Specifically, the cross section of the blade 6 is in a straight line, a broken line, a curve or an arc shape, and has a simple structure and a reasonable design.

[0036] In this embodiment, a plurality of blades 6 are arranged at intervals on the upper surface of the partition 4 to intercept grease in the oil fume. The blades 6 are extended from the fixed end of the partition 4 toward the free end 6 to improve the fluidity of the range hood. On the upper surface of the partition 4, a plurality of blades 6 are arranged at intervals to form a channel between two adjacent blades 6, so that the oil fume can be filtered when passing through the channel. The cross-section of the blades 6 is wavy, but not limited to the wavy shape, and can also be straight, broken line, curved or arc-shaped. Of course, it can also be set to a suitable shape according to actual needs. In this embodiment, the cross section of the blade 6 is wavy, and the partition 4 is sequentially provided with four layers of partitions from the oil net 2 to the direction of the fan 3, wherein the swing amplitude of the blade 6 provided on each layer of partition 4 and the spacing distance between two adjacent blades 6 are also different, and the size of the grease molecules adsorbed by each layer of partition 4 is different. The layer-by-layer advancement and layer-by-layer filtering method can better achieve the layer-by-layer separation of large, medium and small grease particles, thereby improving the grease adsorption capacity of the range hood. The wave amplitude of the blade 6 on the partition 4 is the largest at the position close to the oil net 2, and the wave amplitude of the blade 6 on the partition 4 is the smallest at the position close to the fan 3, that is, the wave amplitude of the blade 6 on the partition 4 gradually decreases from the oil net 2 to the fan 3, and at the same time, the wave amplitude of the blade 6 on the partition 4 is the smallest at the position close to the oil net 2. 2, the distance between the blades 6 on the partition 4 is the largest, and the distance between the blades 6 on the partition 4 is the smallest at the position close to the fan 3, that is, the distance between the blades 6 on the partition 4 gradually decreases from the oil net 2 to the fan 3. The partition 4 close to the oil net 2 is the position where the oil smoke flows in. At this time, the oil smoke particles in the oil smoke are relatively large. The blades 6 need to have a larger swing amplitude and a larger interval between two adjacent blades 6 to adsorb larger particles of oil in the oil smoke. The swing amplitude of the blades 6 of the partition 4 at the middle position and the medium interval between two adjacent blades 6 are used to adsorb medium particles in the oil smoke. The swing amplitude of the blades 6 of the partition 4 close to the fan 3 and the small interval between two adjacent blades 6 are used to adsorb smaller particles in the oil smoke.

[0037] Furthermore, the thickness of the blade 6 is 0.2 mm to 1 mm, and it has a simple structure and a reasonable design to better ensure the circulation area of ​​the oil smoke.

[0038] Specifically, the surfaces of the partition 4 and the blades 6 are covered with an oleophobic and hydrophobic coating, which has a simple structure and a reasonable design, and can allow the intercepted grease and water vapor to flow better to avoid adhesion to the partition or the blades.

[0039] In particular, the thickness of the partition 4 is 0.2 mm to 2 mm, and its design is reasonable and ingenious, which can better isolate the noise generated by the fan.

[0040] In this embodiment, the thickness of the blade 6 is 0.2mm to 1mm, and the thickness of the blade 6 is preferably set to 0.5mm. Of course, the thickness of the blade 6 can also be set to other more suitable thicknesses according to actual needs, thereby avoiding the thickness of the blade 6 being too thick to reduce the flow area and increase the cost of the product. In this embodiment, the surface of the partition 4 and the blade 6 is evenly sprayed with an oleophobic and hydrophobic coating, which allows the grease and water vapor intercepted by the blade 6 to flow better to avoid sticking to the partition 4 or the blade 6. The thickness of the partition 4 in this embodiment is 0.2mm to 2mm, and the thickness of the partition 4 is preferably set to 1mm to block the noise generated by the fan 3 through the partition 4, so that the noise is reflected, thereby reducing the downward propagation of sound to avoid the noise directly propagating through the oil net 2 to the outside of the range hood body 1, reducing the noise felt by the human ear, and thus improving the user experience.

[0041] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An oil filtering and noise reduction structure for a range hood, the range hood comprising a range hood body (1) having an air inlet, an oil net being arranged at the air inlet of the range hood body (1), and a fan (3) being arranged inside the range hood body (1), characterized in that: A plurality of partitions (4) are arranged at intervals between the oil screen and the fan (3), a ventilation opening (5) is formed between the partition (4) and the side wall of the range hood body (1), and the partition (4) is arranged at an angle; A plurality of blades (6) are arranged at intervals on the upper surface of the partition (4) so ​​as to be suitable for intercepting grease in the oil smoke; The cross section of the blade (6) is wavy, and the wave amplitude of the blade (6) on the partition (4) gradually decreases from the oil net toward the fan (3); The spacing between the blades (6) on the partition (4) gradually decreases from the oil net toward the fan (3); The partition plate (4) is arranged to be tilted downward from a side away from the ventilation opening (5) to a side close to the ventilation opening (5).

2. The oil filtering and noise reduction structure of a range hood according to claim 1, characterized in that: The inclination angle of the partition (4) is 3° to 10°.

3. The oil filtering and noise reduction structure of a range hood according to claim 1, characterized in that: The blade (6) has a trough and a crest, a transition line is formed between the trough and the crest, and the angle between the transition line and the horizontal line is 30° to 60°.

4. The oil filtering and noise reduction structure of a range hood according to claim 1 or 2, characterized in that: The thickness of the blade (6) is 0.2 mm to 1 mm.

5. The oil filtering and noise reduction structure of a range hood according to claim 1 or 2, characterized in that: The surfaces of the partition (4) and the blades (6) are both covered with an oleophobic and hydrophobic coating.

6. The oil filtering and noise reduction structure of a range hood according to claim 1 or 2, characterized in that: The thickness of the partition (4) is 0.2 mm to 2 mm.

Images