A range hood

Abstract

The utility model discloses a kind of range hood, including upper box and the smoke collecting hood being installed in the bottom of upper box, smoke collecting hood is installed with smoke guide plate, the front of smoke guide plate and the smoke collecting hood form front air inlet channel, the rear of smoke guide plate and the smoke collecting hood form rear air inlet channel, front deflector plate that can guide the oil fume below smoke guide plate into the inside of upper box is installed in front air inlet channel, rear deflector plate that can guide the oil fume below smoke guide plate into the inside of upper box is installed in rear air inlet channel.The utility model has the advantages that: the range hood is installed front deflector plate in the front air inlet channel of the front side of smoke guide plate, and rear deflector plate is installed in the rear air inlet channel of the rear side of smoke guide plate, front deflector plate guides the oil fume of front side into upper box, rear deflector plate guides the oil fume of rear side into upper box, can reduce the flow rate loss caused by oil fume and smoke collecting hood inner cavity collision, beneficial to improve the effect of oil fume.

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] During cooking, the resulting fumes not only affect the kitchen environment but also harm human health. Therefore, efficient range hoods have become essential equipment in modern kitchens. Existing European-style circular range hoods cleverly utilize the wall-attachment effect to guide the flow of fumes by installing a smoke guide plate at the air inlet, while employing a four-sided air intake design to effectively improve fume extraction.

[0003] However, this type of range hood still suffers from several technical shortcomings. Firstly, the narrow air intake channels formed around the smoke collection hood and guide plate obstruct airflow, resulting in significant flow rate loss and reduced smoke extraction efficiency. Secondly, to address oil dripping, the existing guide plate is positioned inside the smoke collection chamber at the front, causing multiple bends in the front air intake path. This results in frequent collisions between the smoke and the inside of the chamber, further weakening the smoke extraction effect. Thirdly, current technology does not rationally allocate the size of the surrounding air intake channels, making it difficult to achieve optimal smoke extraction performance. Fourthly, while the air intake channels can be optimized by adding guide plates, this easily leads to the problem of condensed oil dripping from the guide plates. These issues severely impact the user experience and performance of European-style circular range hoods and urgently require technical improvements to resolve. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a range hood that can reduce the collision between oil fumes and the inner cavity of the fume hood and has a good oil fume extraction effect, in view of the above-mentioned existing technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a range hood, including an upper box and a smoke collection hood installed at the bottom of the upper box, a smoke guide plate installed on the smoke collection hood, a forward air passage formed between the front edge of the smoke guide plate and the smoke collection hood, and a rear air inlet passage formed between the rear edge of the smoke guide plate and the smoke collection hood, characterized in that: a front guide plate is installed in the forward air passage to guide the oil fumes below the smoke guide plate into the interior of the upper box, and a rear guide plate is installed in the rear air inlet passage to guide the oil fumes below the smoke guide plate into the interior of the upper box.

[0006] To achieve better airflow guidance, the front guide plate has a first guide surface arranged obliquely upwards from front to back and a second guide surface bent backwards from the upper edge of the first guide surface. The vertical projection of the rear edge of the second guide surface falls on the smoke guide plate. This arrangement allows the front guide plate and the smoke guide plate to overlap in the front-to-back direction, creating an air intake channel between them and facilitating the dripping of oil from the front guide plate onto the smoke guide plate. Furthermore, the bending structure between the first and second guide surfaces allows for a larger smoke guide plate, expanding the smoke collection area and improving the fume extraction effect.

[0007] Preferably, the smoke guide plate is inclined downward from front to back, and the second guide surface is arranged inclined downward from front to back.

[0008] In order to allow the airflow to flow smoothly in the air inlet channel between the smoke guide plate and the second guide surface, the smoke guide plate and the second guide surface are parallel to each other.

[0009] In order to ensure smooth airflow, the vertical distance between the smoke guide plate and the second guide surface is equal to the vertical distance between the leading edge of the smoke guide plate and the first guide surface.

[0010] To improve the airflow guiding effect of the front guide plate, the lower edge of the first guide surface is lower than the leading edge of the smoke guide plate.

[0011] Further preferably, the first guide surface and the second guide surface form an angle or a smooth transition. For a structure with a smooth transition, the turning angle of the oil fume path can be reduced, making the oil fume intake path more gentle and unobstructed, which helps to reduce noise and improve the oil fume extraction effect.

[0012] In order to fix the rear side of the front guide plate to the upper housing, the rear edge of the second guide surface has an upwardly extending extension, which is fixed to the front plate of the upper housing.

[0013] Further preferably, the second guide surface and the extension form an angle or a smooth transition. This configuration, for a structure with a smooth transition, can reduce the turning angle of the fume path, making the fume intake path gentler and smoother, which helps to reduce noise and improve the fume extraction effect.

[0014] In order to enable the rear guide plate to have a better air guiding effect, the rear guide plate has a rear guide surface that is inclined upward from front to back. The lower edge of the rear guide surface is lower than the rear edge of the smoke guide plate, and the upper edge of the rear guide surface is higher than the rear edge of the smoke guide plate.

[0015] In order to allow the condensed oil on the rear guide plate and the smoke guide plate to flow smoothly into the oil cup, a long strip-shaped oil cup is installed at the bottom rear side of the smoke collection hood. The vertical projection of the lower edge of the rear guide plate falls into the oil cup, and the vertical projection of the rear edge of the smoke guide plate falls on the rear guide surface or into the oil cup.

[0016] In order to form air intake channels around the smoke guide plate and create a smoke suction effect, a left-side air intake channel and a right-side air intake channel are formed between the smoke guide plate and the smoke collection hood.

[0017] As a preferred embodiment of any of the above solutions, a fume extraction fan is installed inside the upper housing. The fume extraction fan is a centrifugal fan with its impeller axis perpendicular to the front panel of the upper housing. The fan has a front air inlet and a rear air inlet, with the distance between the front air inlet and the front panel of the upper housing being greater than the distance between the rear air inlet and the rear panel of the upper housing. This configuration increases the airflow in the front air passage, preventing fumes from escaping from the front.

[0018] Compared with existing designs, the advantages of this utility model are as follows: By installing a front guide plate in the front air inlet channel on the front side of the smoke guide plate and a rear guide plate in the rear air inlet channel on the rear side of the smoke guide plate, the front guide plate guides the front smoke into the upper box, and the rear guide plate guides the rear smoke into the upper box. This can reduce the flow rate loss caused by the collision between the smoke and the inner cavity of the smoke collection hood, and help improve the smoke extraction effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the range hood according to Embodiment 1 of this utility model;

[0020] Figure 2 for Figure 1 The diagram shows another angle of the range hood.

[0021] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the range hood.

[0022] Figure 4 for Figure 1 The diagram shows the structure of the range hood after the smoke collection hood cover has been removed.

[0023] Figure 5 This is a structural cross-sectional view of the range hood according to Embodiment 2 of this utility model. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] Example 1:

[0026] like Figures 1 to 4As 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 range hood fan 11 is installed inside the upper housing 1. Figure 3 The direction indicated by the middle arrow A is forward. The fume extractor 11 is a centrifugal fan and the central axis of the impeller is perpendicular to the front plate of the upper housing 1. The fume extractor 11 has a front air inlet 111 and a rear air inlet 112. The distance between the front air inlet 111 and the front plate of the upper housing 1 is greater than the distance between the rear air inlet 112 and the rear plate of the upper housing 1.

[0027] A smoke guide plate 3 is installed on the smoke hood 2. The front edge of the smoke guide plate 3 forms a forward air intake channel 4 with the smoke hood 2, and the rear edge of the smoke guide plate 3 forms a rear air intake channel 5 with the smoke hood 2. A left air intake channel 9 and a right air intake channel 10 are formed between the smoke guide plate 3 and the smoke hood 2. Thus, air intake channels are formed around the smoke guide plate 3, forming a smoke suction effect.

[0028] A front guide plate 6 is installed in the front air intake duct 4 to guide the oil fumes below the smoke guide plate 3 into the upper housing 1, and a rear guide plate 7 is installed in the rear air intake duct 5 to guide the oil fumes below the smoke guide plate 3 into the upper housing 1.

[0029] In this embodiment, the front guide plate 6 has a first guide surface 61 arranged obliquely upward from front to back and a second guide surface 62 bent backward from the upper edge of the first guide surface 61. The rear edge of the second guide surface 62 has an upwardly extending extension 63. The lower edge of the first guide surface 61 is lower than the front edge of the smoke guide plate 3. The vertical projection of the rear edge of the second guide surface 62 falls on the smoke guide plate 3. The extension 63 is fixed to the front plate of the upper housing 1.

[0030] The front guide vane 6 and the smoke guide vane 3 overlap in the front-to-back direction, which on the one hand creates an air intake channel between them, and on the other hand facilitates the dripping of oil from the front guide vane 6 onto the smoke guide vane. Furthermore, the bending structure formed between the first guide surface 61 and the second guide surface 62 allows for the installation of a larger smoke guide vane 3, thereby expanding the smoke collection range and improving the oil fume extraction effect.

[0031] In this embodiment, the smoke guide plate 3 is inclined downwards from front to back, and the second guide surface 62 is also inclined downwards from front to back. Furthermore, the smoke guide plate 3 and the second guide surface 62 are parallel to each other. The vertical distance between the smoke guide plate 3 and the second guide surface 62 is equal to the vertical distance between the leading edge of the smoke guide plate 3 and the first guide surface 61. This facilitates smoother airflow within the forward air passage 4. In addition to being parallel, the smoke guide plate 3 and the second guide surface 62 can also have different inclination angles.

[0032] In this embodiment, an angle is formed between the first guide surface 61 and the second guide surface 62, and an angle is formed between the second guide surface 62 and the extension 63. The oil fume airflow on the front side of the smoke guide plate 3 bends at the angle and enters the oil fume fan 11.

[0033] In this embodiment, the rear guide plate 7 has a rear guide surface 71 that slopes upwards from front to back. The lower edge of the rear guide surface 71 is lower than the rear edge of the smoke guide plate 3, and the upper edge of the rear guide surface 71 is higher than the rear edge of the smoke guide plate 3. A long strip-shaped oil cup 8 is installed at the bottom rear side of the smoke hood 2. The vertical projection of the lower edge of the rear guide plate 7 falls in the oil cup 8, and the vertical projection of the rear edge of the smoke guide plate 3 falls on the rear guide surface 71 or in the oil cup 8. The condensed oil on the rear guide plate 7 and the smoke guide plate 3 can flow smoothly into the oil cup 8. The rear guide plate 7 not only guides the oil fumes but also covers the visible area of ​​the rear panel of the smoke hood 2, concealing oil droplet marks and making it more aesthetically pleasing.

[0034] Example 2:

[0035] like Figure 5 As shown, in this embodiment of the range hood, the first guide surface 61 and the second guide surface 62 have a smooth transition, preferably an arc transition, and the second guide surface 62 and the extension 63 have a smooth transition, preferably an arc transition. Using a smooth transition reduces the turning angle of the fume path, making the fume intake path gentler and smoother, which helps reduce noise and improve the fume extraction effect.

[0036] This range hood can be controlled by a voice module, which is equipped with a control module, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the range hood to perform corresponding operations, thereby realizing intelligent control of the range hood and improving the user experience.

[0037] 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), a forward air intake channel (4) is formed between the front edge of the smoke guide plate (3) and the smoke collection hood (2), and a rear air intake channel (5) is formed between the rear edge of the smoke guide plate (3) and the smoke collection hood (2), characterized in that: A front guide plate (6) is installed in the front air duct (4) to guide the oil fumes below the smoke guide plate (3) into the upper box (1), and a rear guide plate (7) is installed in the rear air duct (5) to guide the oil fumes below the smoke guide plate (3) into the upper box (1).

2. The range hood according to claim 1, characterized in that: The front guide plate (6) has a first guide surface (61) arranged obliquely upward from front to back and a second guide surface (62) bent backward from the upper edge of the first guide surface (61), and the vertical projection of the rear edge of the second guide surface (62) falls on the smoke guide plate (3).

3. The range hood according to claim 2, characterized in that: The smoke guide plate (3) is inclined downward from front to back, and the second guide surface (62) is inclined downward from front to back.

4. The range hood according to claim 3, characterized in that: The smoke guide plate (3) is parallel to the second guide surface (62).

5. The range hood according to claim 4, characterized in that: The vertical distance between the smoke guide plate (3) and the second guide surface (62) is equal to the vertical distance between the front edge of the smoke guide plate (3) and the first guide surface (61).

6. The range hood according to claim 2, characterized in that: The lower edge of the first guide surface (61) is lower than the front edge of the smoke guide plate (3).

7. The range hood according to claim 2, characterized in that: The first guide surface (61) and the second guide surface (62) form an angle or a smooth transition.

8. The range hood according to claim 2, characterized in that: The rear edge of the second guide surface (62) has an upwardly extending extension (63), which is fixed to the front plate of the upper housing (1).

9. The range hood according to claim 8, characterized in that: An angle or a smooth transition is formed between the second guide surface (62) and the extension (63).

10. The range hood according to claim 1, characterized in that: The rear guide plate (7) has a rear guide surface (71) that is inclined upward from front to back. The lower edge of the rear guide surface (71) is lower than the rear edge of the smoke guide plate (3), and the upper edge of the rear guide surface (71) is higher than the rear edge of the smoke guide plate (3).

11. The range hood according to claim 10, characterized in that: The bottom rear side of the smoke hood (2) is equipped with a long strip-shaped oil cup (8). The vertical projection of the lower edge of the rear guide plate (7) falls in the oil cup (8), and the vertical projection of the rear edge of the smoke guide plate (3) falls on the rear guide surface (71) or in the oil cup (8).

12. The range hood according to claim 1, characterized in that: A left-side air intake channel (9) and a right-side air intake channel (10) are formed between the smoke guide plate (3) and the smoke collection hood (2).

13. The range hood according to any one of claims 1 to 12, characterized in that: The upper housing (1) is equipped with a fume extractor (11). The fume extractor (11) is a centrifugal fan and the central axis of the impeller is perpendicular to the front plate of the upper housing (1). The fume extractor (11) has a front air inlet (111) and a rear air inlet (112). The distance between the front air inlet (111) and the front plate of the upper housing (1) is greater than the distance between the rear air inlet (112) and the rear plate of the upper housing (1).

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