A range hood
By combining the smoke guide plate and the rear air deflector, the problems of narrow air intake channels and oil droplet exposure in range hoods are solved, resulting in stronger suction and better appearance, thus improving user satisfaction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO FOTILE KITCHEN WARE CO LTD
- Filing Date
- 2025-04-15
- Publication Date
- 2026-06-12
AI Technical Summary
Existing range hoods have narrow air intake channels, resulting in insufficient suction power. The large turning angles in the smoke path lead to a loss of air speed. Furthermore, the visible oil droplet marks on the back panel of the smoke collection hood affect the appearance, and the screw connections can easily scratch hands.
The design combines a smoke guide plate and a rear deflector plate. The rear deflector plate covers the visible area of the rear panel of the smoke collection hood, reducing the turning angle and wind speed loss. The bending part is used to fix the screws to prevent them from being exposed, and the oil droplets flow into the oil cup.
It improves the smoke extraction effect, covers oil droplets, enhances the user experience, avoids the risk of screw scratches, and keeps the appearance clean.
Smart Images
Figure CN224353047U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an oil fume purification device, and more particularly to an oil fume extractor. Background Technology
[0002] As people's living standards improve, their demands for the functionality and convenience of kitchen appliances are increasing, making range hoods an indispensable piece of equipment. However, the air intake channel formed by the smoke collection hood and the rear of the smoke guide plate in existing range hoods is relatively narrow. This structural defect limits the air intake volume and prevents the formation of a sufficiently strong suction field, thus affecting the effective capture and extraction of kitchen fumes. This results in poor fume extraction and fails to meet users' actual needs for kitchen air purification. A common improvement is to increase the gap between the oil guide plate and the rear panel of the smoke collection hood to expand the air intake channel. However, after expanding the air intake channel, the rear air intake channel extends from the rear panel to the back panel of the fan frame. During the process of fumes being sucked in, condensation occurs due to temperature changes. The condensed grease flows down along the back panel of the fan frame and the rear panel, eventually reaching the bottom plate and entering the grease cup. During this process, noticeable oil droplet marks will be left on the back panel of the fume hood. Users can directly see the oil droplet path on the back panel from the front of the range hood. This not only affects the overall cleanliness of the range hood's appearance but also reduces user satisfaction and negatively impacts the product's image in the user's mind. Furthermore, the large bends in the fume path within the air intake duct hinder smoke intake and cause airflow loss.
[0003] Furthermore, the fume hood is connected to the base plate with screws, and this connection point is easily accessible to users during routine cleaning. During cleaning, the cloth is easily caught on the screw ends, increasing cleaning difficulty and posing a risk of hand injuries, causing significant inconvenience and potential danger to the user experience.
[0004] In conclusion, further improvements are needed to the existing structure of range hoods. Utility Model Content
[0005] The first technical problem to be solved by this utility model is to provide a range hood that can reduce the turning angle of the oil fume path and reduce wind speed loss, in light of the above-mentioned existing technology.
[0006] The second technical problem to be solved by this utility model is to provide a range hood that can cover the visible area of the back panel of the smoke collection hood and block oil droplet marks, in view of the above-mentioned existing technology.
[0007] The technical solution adopted by this utility model to solve the first technical problem mentioned above is as follows: a range hood, including an upper box and a smoke collection hood installed at the bottom of the upper box, wherein a smoke guide plate is installed on the smoke collection hood, characterized in that: a rear air intake channel is formed between the rear edge of the smoke guide plate and the rear plate of the smoke collection hood, and a rear guide plate that can guide the oil fumes below the smoke guide plate into the interior of the upper box is installed in the rear air intake channel.
[0008] The smoke guide plate and the rear guide plate can be arranged in various ways. Preferably, the smoke guide plate is arranged diagonally downward from front to back or horizontally, and the rear guide plate has a guide surface, which is arranged diagonally backward from bottom to top.
[0009] The technical solution adopted by this utility model to solve the second technical problem mentioned above is that the upper edge of the rear guide plate is higher than the rear edge of the smoke guide plate, and the lower edge of the rear guide plate is lower than the rear edge of the smoke guide plate.
[0010] More preferably, the width of the rear deflector in the left-right direction is greater than the width of the smoke guide in the left-right direction.
[0011] In order to create a ring suction effect and improve the fume extraction effect, the bottom of the fume hood has a U-shaped base plate, and the smoke guide plate is located above the U-shaped base plate and inside the U-shaped base plate. The front side, left side and right side of the smoke guide plate form an air intake gap with the corresponding side of the U-shaped base plate.
[0012] In order for the oil droplets falling on the bottom plate of the smoke hood and the rear guide plate to flow into the oil cup, an oil cup is installed at the bottom rear side of the smoke hood. The rear edges of the left and right sides of the U-shaped bottom plate are connected above the oil cup. The lower part of the guide surface of the rear guide plate is limited on the U-shaped bottom plate, and the projection of the lower edge of the rear guide plate in the vertical direction falls into the oil cup.
[0013] In order to ensure that the oil droplets dripping from the smoke guide plate and the oil droplets dripping from the rear guide plate flow into the oil cup independently, the rear edge of the smoke guide plate and the lower edge of the rear guide plate are offset from each other in the front-to-back direction, and the projection of the rear edge of the smoke guide plate in the vertical direction falls into the oil cup.
[0014] To avoid direct contact between the upper part of the guide surface and the rear panel of the smoke hood, the upper edge of the guide surface extends downwards and backwards to form an extension, creating a gap between the upper edge of the guide surface and the rear panel of the smoke hood. This design prevents oil on the rear panel of the smoke hood from flowing onto the guide surface, thus maintaining the aesthetic appearance of the guide surface.
[0015] In order to fix the rear guide plate to the rear plate of the smoke hood, the upper edge of the rear guide plate is bent backward and downward to form a mounting part, and the mounting part is fixed to the rear plate of the smoke hood.
[0016] To prevent the screw tails from being exposed, a rear bottom plate is installed at the rear bottom of the smoke hood. The rear bottom plate, the rear panel of the smoke hood, and the rear guide plate form a cavity. The rear part of the rear bottom plate is fixed to the rear panel of the smoke hood with screws, the mounting part is fixed to the rear panel of the smoke hood with screws, and the bottom of the rear guide plate is fixed to the bottom of the rear bottom plate with screws. The tails of the screws extend into the cavity. This design ensures that the cleaning cloth will not be caught on the screw tails during cleaning in areas accessible to the user, eliminating the risk of hand injuries.
[0017] Further preferably, an oil cup is installed at the bottom of the rear base plate.
[0018] In order to fix the rear guide plate to the rear plate and rear bottom plate of the smoke hood, the upper edge of the guide surface is bent backward and downward to form a first bend, the lower edge of the first bend extends vertically downward to form a second bend, and the lower edge of the guide surface is bent backward and horizontally to form a third bend. The second bend constitutes the mounting part, and the third bend is fixed to the bottom of the rear bottom plate by screws.
[0019] Compared with existing designs, the advantages of this utility model are as follows: the rear edge of the smoke guide plate of the range hood forms a rear air intake channel between the rear edge of the smoke guide plate and the rear plate of the smoke collection hood. By installing a rear guide plate in the rear air intake channel, on the one hand, the width of the air intake channel can be wider, thereby increasing the air volume; on the other hand, the turning angle of the oil fume path can be reduced, reducing wind speed loss, thereby achieving a better oil fume extraction effect. In addition, the rear guide plate can also cover the visible area of the rear plate of the smoke collection hood, blocking oil droplet traces and improving the user's visual experience. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of the range hood according to an embodiment of the present utility model;
[0021] Figure 2 This is an exploded view of an embodiment of the present utility model;
[0022] Figure 3 for Figure 1 The diagram shown is a schematic of the internal structure of the range hood.
[0023] Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle;
[0024] Figure 5 for Figure 1 The diagram shows a cross-sectional view of the range hood.
[0025] Figure 6 for Figure 5 Enlarged schematic diagram of part B in the middle;
[0026] Figure 7 for Figure 1 Another structural cross-sectional view of the range hood shown;
[0027] Figure 8 for Figure 7 An enlarged schematic diagram of section C. Detailed Implementation
[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0029] like Figures 1 to 6 As shown, the range hood in this embodiment includes an upper housing 1 and a smoke collection hood 2 installed at the bottom of the upper housing 1. A smoke guide plate 3 is installed on the smoke collection hood 2. A rear air intake channel 4 is formed between the rear edge of the smoke guide plate 3 and the rear plate of the smoke collection hood 2. A rear air intake plate 5 is installed in the rear air intake channel 4 to guide the oil fumes below the smoke guide plate 3 into the interior of the upper housing 1.
[0030] In this embodiment, the smoke guide plate 3 is arranged diagonally downwards from front to back. The upper edge of the rear guide plate 5 is higher than the rear edge of the smoke guide plate 3, and the lower edge of the rear guide plate 5 is lower than the rear edge of the smoke guide plate 3. The width of the rear guide plate 5 in the left-right direction is greater than the width of the smoke guide plate 3 in the left-right direction. In this way, when the user looks back, the rear guide plate 5 can cover the visible area of the rear panel 21 of the smoke collection hood 2, concealing oil droplet marks and making it more aesthetically pleasing.
[0031] like Figure 7 and Figure 8 As shown, the rear deflector 5 in this embodiment has a guide surface 50, which is arranged obliquely backward from bottom to top. The angle of inclination of the guide surface 50 relative to the horizontal plane can be set between 40° and 60°. The upper edge of the guide surface 50 bends backward and downward to form a first bend 51, and the lower edge of the first bend 51 extends vertically downward to form a second bend 52. The lower edge of the rear deflector 5 bends horizontally backward to form a third bend 53. The upper edge of the guide surface 50 is the upper edge of the rear deflector 5, and the lower edge of the guide surface 50 is the lower edge of the rear deflector 5.
[0032] A rear base plate 23 is installed at the bottom rear side of the smoke hood 2, forming a cavity 8 between the rear base plate 23, the rear plate of the smoke hood 2, and the rear guide plate 5. The second bend 52 of the rear guide plate 5 forms a mounting part, and screw holes are opened on the second bend 52. The second bend 52 is fixed to the rear plate 21 of the smoke hood 2 by screws (not shown in the figure), with the screws extending from back to front into the cavity 8. The first bend 51 and the second bend 52 are extensions formed from the upper edge of the guide surface 50 to the rear and downward, thereby creating a gap between the upper edge of the guide surface 50 and the rear plate 21 of the smoke hood 2. Through the design of the first bend 51 and the second bend 52, when the rear guide plate 5 is installed, the oil on the rear plate 21 of the smoke hood 2 flows down through the gap between the rear plate 21 and the second bend 52, without flowing onto the guide surface 50 and affecting the aesthetics of the guide surface. The rear part of the rear base plate 23 is fixed to the rear plate of the smoke hood 2 by screws 9, which extend from rear to front into the cavity 8. The bottom of the rear guide plate 5, i.e., the third bend 53, is fixed to the bottom of the rear base plate 23 by screws (not shown in the figure), with the tail of the screw extending from bottom to top into the cavity 8. This avoids the screw tails being exposed, resulting in a neat appearance. There are no accessible screw tails in areas that the user can clean, and the cleaning cloth will not be caught on the screw tails during cleaning, eliminating the risk of hand injuries.
[0033] An oil cup 7 is installed at the bottom of the rear base plate 23. The rear edge of the smoke guide plate 3 and the lower edge of the rear guide plate 5 are offset from each other in the front-to-back direction. The projection of the rear edge of the smoke guide plate 3 and the lower edge of the rear guide plate 5 in the vertical direction falls into the oil cup 7, so as to prevent oil droplets on the smoke guide plate 3 from falling onto the rear guide plate 5.
[0034] The bottom of the fume hood 2 has a U-shaped base plate 22. The fume guide plate 3 is located above the U-shaped base plate 22 and inside it. An air inlet gap 6 is formed between the front, left, and right sides of the fume guide plate 3 and the corresponding sides of the U-shaped base plate 22. The air inlet gap 6 and the rear air inlet channel 4 together form an annular channel around the fume guide plate 3, improving the fume extraction effect. The guide surface 50 of the rear guide plate 5 has a slot 54. The left and right sides of the U-shaped base plate are fitted into the slot 54, limiting the installation of the rear guide plate 5. Furthermore, the rear edges of the left and right sides of the U-shaped base plate 22 connect above the oil cup 7. Oil droplets falling onto the U-shaped base plate 22 eventually drip into the oil cup 7.
[0035] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.
Claims
1. A range hood, comprising an upper housing (1) and a smoke collection hood (2) installed at the bottom of the upper housing (1), wherein a smoke guide plate (3) is installed on the smoke collection hood (2), characterized in that: A rear air intake channel (4) is formed between the rear edge of the smoke guide plate (3) and the rear plate (21) of the smoke collection hood (2). A rear air intake plate (5) is installed in the rear air intake channel (4) to guide the oil fumes below the smoke guide plate (3) into the interior of the upper box (1).
2. The range hood according to claim 1, characterized in that: The smoke guide plate (3) is arranged diagonally downward from front to back or horizontally, and the rear guide plate (5) has a guide surface (50), which is arranged diagonally backward from bottom to top.
3. The range hood according to claim 2, characterized in that: The upper edge of the rear guide plate (5) is higher than the rear edge of the smoke guide plate (3), and the lower edge of the rear guide plate (5) is lower than the rear edge of the smoke guide plate (3).
4. The range hood according to claim 3, characterized in that: The width of the rear guide plate (5) in the left-right direction is greater than the width of the smoke guide plate (3) in the left-right direction.
5. The range hood according to claim 4, characterized in that: The bottom of the smoke hood (2) has a U-shaped base plate (22), and the smoke guide plate (3) is located above the U-shaped base plate (22) and inside the U-shaped base plate (22). An air inlet gap (6) is formed between the front side, left side and right side of the smoke guide plate (3) and the corresponding side of the U-shaped base plate (22).
6. The range hood according to claim 5, characterized in that: An oil cup (7) is installed at the bottom rear side of the smoke hood (2). The rear edges of the left and right sides of the U-shaped base plate (22) are connected above the oil cup (7). The lower part of the guide surface (50) of the rear guide plate (5) is limited on the U-shaped base plate (22). The projection of the lower edge of the rear guide plate (5) in the vertical direction falls into the oil cup (7).
7. The range hood according to claim 6, characterized in that: The rear edge of the smoke guide plate (3) and the lower edge of the rear guide plate (5) are offset from each other in the front-to-back direction, and the projection of the rear edge of the smoke guide plate (3) in the vertical direction falls into the oil cup (7).
8. The range hood according to claim 2, characterized in that: The upper edge of the guide surface (50) extends backward and downward to form an extension, thereby creating a gap between the upper edge of the guide surface (50) and the rear plate (21) of the smoke hood (2).
9. The range hood according to claim 2, characterized in that: The upper edge of the guide surface (50) is bent backward and downward to form a mounting part, which is fixed to the rear plate (21) of the smoke hood (2).
10. The range hood according to claim 9, characterized in that: A rear bottom plate (23) is installed on the rear bottom of the smoke hood (2). The rear bottom plate (23), the rear plate (21) of the smoke hood (2), and the rear guide plate (5) form a cavity (8). The rear part of the rear bottom plate (23) is fixed to the rear plate (21) of the smoke hood (2) by screws (9). The mounting part is fixed to the rear plate (21) of the smoke hood (2) by screws. The bottom of the rear guide plate (5) is fixed to the bottom of the rear bottom plate (23) by screws. The tail of the screw extends into the cavity (8).
11. The range hood according to claim 10, characterized in that: An oil cup (7) is installed at the bottom of the rear base plate (23).
12. The range hood according to claim 10, characterized in that: The upper edge of the guide surface (50) bends backward and downward to form a first bend (51), the lower edge of the first bend (51) extends vertically downward to form a second bend (52), the lower edge of the guide surface (50) bends backward and horizontally to form a third bend (53), the second bend (52) constitutes the mounting part, and the third bend (53) is fixed to the bottom of the rear base plate (23) by screws.