A range hood

Abstract

The oil fume extractor comprises an upper box body and an air inlet body, the air inlet body is arranged at the bottom of the upper box body and can move up and down relative to the upper box body, the outer periphery of the bottom of the upper box body is provided with an upper box body frame, a gap is left between the air inlet body and the upper box body frame, a long strip-shaped oil cup is arranged at the bottom of the rear side of the air inlet body, oil blocking grooves are formed at the bottom of the upper box body frame on the left and right sides of the upper box body, the oil blocking grooves are distributed leftward and rightward, oil guiding nozzles are formed at the inner side of the oil blocking grooves, and the vertical projection of the oil guiding nozzles falls on the long strip-shaped oil cup. The oil fume extractor is provided with the oil blocking grooves at the bottom of the upper box body frame on the left and right sides of the upper box body, the oil blocking grooves are distributed leftward and rightward, the vertical projection of the oil guiding nozzles formed at the inner side of the oil blocking grooves falls on the long strip-shaped oil cup, and the gap is left between the air inlet body and the upper box body frame. When the oil fume extractor works, the oil fume will enter the frame along the gap, the accumulated oil in the frame will not flow to the last side of the frame after being blocked by the oil blocking grooves, but will flow into the oil cup through the oil guiding nozzles, thereby avoiding the oil leakage phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a range hood. Background Technology

[0002] In the field of kitchen appliances, range hoods, as essential equipment for maintaining clean kitchen air, have always been a focus of industry research in terms of structural design and performance optimization. In recent years, to improve smoke extraction efficiency and user experience, lift-type flip-up range hoods have emerged. This type of range hood mainly consists of a fan system, an upper housing, a lower housing, and a smoke baffle. The upper housing is fixedly connected to the fan system, while the lower housing is connected to the upper housing via a hinge and uses a push rod to achieve lifting and lowering movement, thereby opening the smoke baffle to adapt to different cooking scenarios. For example, patent number 202322823659.4 (authorized public domain number CN221403155 U) discloses such a range hood. Furthermore, a frame is usually installed at the bottom of the upper housing, with a lower glass panel glued to the bottom of the frame, enhancing both the structural strength and aesthetics of the range hood.

[0003] However, the existing design of lift-type flap range hoods still has significant flaws. Because the lower casing needs to move up and down, gaps inevitably exist between it and the frame and upper casing. During operation, cooking fumes can easily enter the frame through these gaps, leading to a risk of significant grease buildup after prolonged use. Furthermore, the front corners of the frame are currently sealed with welding, while the rear uses a simple bending process. When a large amount of grease accumulates inside the frame, it will drip from the rear corner seams, affecting kitchen hygiene, posing safety hazards, and severely impacting user experience and product competitiveness. Therefore, it is urgent to improve the structure of existing lift-type flap range hoods to solve the aforementioned grease accumulation and leakage problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a range hood that can smoothly guide the oil in the upper housing frame to the oil cup, 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 an air inlet, wherein the air inlet is located at the bottom of the upper box and can move up and down relative to the upper box, an upper box frame is installed on the outer periphery of the bottom of the upper box, a gap is left between the air inlet and the upper box frame, and an elongated oil cup is installed at the bottom rear side of the air inlet, characterized in that: oil blocking grooves are opened at the bottom of the upper box frame located on the left and right sides of the upper box, the oil blocking grooves are distributed in the left and right direction, an oil guide nozzle is opened on the inner side of the oil blocking groove, and the vertical projection of the oil guide nozzle falls on the elongated oil cup.

[0006] In order to ensure that the length of the oil cup can effectively cover the oil guide nozzle, the length of the elongated oil cup is greater than the left and right widths of the air inlet.

[0007] In order to ensure that the oil inside the upper box frame flows smoothly into the oil cup, the left and right widths of the upper box frame are greater than the length of the elongated oil cup.

[0008] In order for the oil baffle groove to play a good role in blocking oil, the outer end of the oil baffle groove is close to the outer side wall of the upper box frame or extends to the outer side wall of the upper box frame.

[0009] In order to ensure that the oil cup can always receive the oil flowing out of the oil guide nozzle, the vertical projection of the oil guide nozzle always falls on the long strip oil cup during the synchronous lifting and lowering process of the long strip oil cup with the air inlet body.

[0010] The upper box frame can have various structures. Preferably, the upper box frame is U-shaped and surrounds the left and right sides and the front side of the bottom of the upper box.

[0011] To avoid the risk of oil leakage caused by oil on the back side of the frame, the front corner of the upper box frame adopts a sealing structure, and the rear end of the upper box frame has a bent edge that bends inward towards the frame, and the bent edge is fixed to the back of the upper box.

[0012] In order to drive the air intake to rotate and rise relative to the upper housing, the air intake is connected to the upper housing through a transmission mechanism, and a drive mechanism for driving the air intake to rotate and rise relative to the upper housing is installed in the upper housing.

[0013] In a further preferred embodiment, the air inlet has an air inlet. When the air inlet is fully tilted downwards, it extends downwards below the upper housing with the air inlet exposed. When the air inlet is fully tilted upwards, it is completely hidden inside the upper housing. With this configuration, when the range hood is working, the air inlet extends downwards, lowering the negative pressure zone and improving smoke extraction. When the hood is turned off, the air inlet is completely hidden, resulting in a simpler structure for the range hood.

[0014] In order to expand the smoke collection area and improve the smoke extraction effect, a smoke baffle that can be linked with the air inlet is also installed on the air inlet. When the air inlet is fully tilted down, the smoke baffle flips forward to the front of the air inlet to open the air inlet. When the air inlet is fully tilted up, the smoke baffle flips backward to the bottom of the air inlet to close the air inlet.

[0015] Further optimized, with the air inlet assembly fully flipped upwards, the smoke baffle flips to a horizontal position and rests against the bottom of the upper housing assembly. This configuration allows the bottom of the range hood to be flush with the kitchen cabinet when the unit is off, resulting in a simpler structure.

[0016] In order to allow the fumes to be smoothly drawn into the upper housing assembly, a fan system is installed inside the upper housing assembly, and the air inlet has an air inlet that is fluidly connected to the air inlet of the fan system.

[0017] Compared with existing designs, the advantages of this utility model are as follows: The range hood has an upper box frame installed on the bottom outer perimeter of the upper box. Oil-blocking grooves are set at the bottom of the upper box frame on the left and right sides of the upper box. The oil-blocking grooves are distributed in the left and right direction. The oil guide nozzles with the inner openings of the oil-blocking grooves are vertically projected onto the elongated oil cup. There is a gap between the air inlet and the upper box frame. When the range hood is working, the oil fumes will enter the frame along the gap. The oil accumulated in the frame will be blocked by the oil-blocking grooves and will not flow to the back side of the frame. Instead, it will be discharged through the oil guide nozzles and flow into the oil cup, thus avoiding oil leakage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a range hood according to an embodiment of the present utility model (with the air inlet body in the lower position);

[0019] Figure 2 for Figure 1 The diagram shows the structure of the range hood from another angle.

[0020] Figure 3 for Figure 1 The diagram shows the structure of the range hood from another different angle.

[0021] Figure 4 This is a schematic diagram of the structure of the range hood according to an embodiment of the present utility model (with the air inlet body raised);

[0022] Figure 5 for Figure 4 The side view of the range hood shown;

[0023] Figure 6 for Figure 5 An enlarged schematic diagram of part A in the middle;

[0024] Figure 7 This is a schematic diagram of the left side of the upper box frame in an embodiment of the present invention. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 7As shown, the range hood in this embodiment is a lift-type range hood, including an upper housing 1 and an air inlet 2. A fan system (not shown) is installed inside the upper housing 1, and a long strip-shaped oil cup 5 is installed at the bottom rear of the air inlet 2. The air inlet 2 is located at the bottom of the upper housing 1 and connected to the upper housing 1 via a transmission mechanism 6. A drive mechanism 7 is installed inside the upper housing 1, which drives the air inlet 2 to rotate and lift relative to the upper housing 1 assembly. The air inlet 2 has an air inlet 20. When the air inlet 2 is fully tilted down, it extends downwards below the upper housing 1 with the air inlet 20 exposed. When the range hood is working, fumes enter the fan system through the air inlet 20. When the air inlet 2 is fully tilted up, it is completely hidden inside the upper housing 1, resulting in a very simple overall structure.

[0027] In this embodiment, the air inlet 2 is also equipped with a smoke baffle 8 that can be linked with the air inlet 2. When the unit is turned on, the air inlet 2 flips down, and at the same time, the smoke baffle 8 flips forward to the front side of the air inlet 2 to open the air inlet 20. When the unit is turned off, the air inlet 2 flips up, and at the same time, the smoke baffle 8 flips backward to the bottom of the air inlet 2 to close the air inlet 20. In addition, the smoke baffle 8 can also move independently of the air inlet 2.

[0028] In this embodiment, an upper box frame 3 is installed on the outer periphery of the bottom of the upper box 1. The upper box frame 3 is U-shaped and surrounds the left and right sides and the front side of the bottom of the upper box 1. The left and right widths of the upper box frame 3 are greater than the length of the long strip oil cup 5. Figure 7 The left side of the upper box frame 3 is shown. The front corner of the upper box frame 3 adopts a sealed structure, and the rear end of the upper box frame 3 has a bent edge 33 that bends inward towards the frame. The bent edge 33 is fixed to the back of the upper box 1.

[0029] Because the air inlet 2 needs to rotate and move up and down, a gap 4 is left between the air inlet 2 and the upper box frame 3. When the range hood is working, oil fumes will enter the upper box frame 3 along the gap 4. Over time, there is a risk of oil accumulation in the upper box frame 3, and the oil will drip from the bend at the rear angle of the frame, causing an oil leakage risk. In order to solve the above-mentioned oil leakage risk, in this embodiment, oil-blocking grooves 31 are opened at the bottom of the upper box frame 3 on the left and right sides of the upper box 1. The oil-blocking grooves 31 are distributed in a left and right direction, and the outer end of the oil-blocking grooves 31 is close to or extends to the outer side wall of the upper box frame 3. An oil guide nozzle 32 is opened on the inner side of the oil-blocking groove 31. The length of the elongated oil cup 5 is greater than the left and right width of the air inlet 2, effectively covering the oil guide nozzle 32. During the synchronous rise and fall of the elongated oil cup 5 with the air inlet 2, the vertical projection of the oil guide nozzle 32 always falls on the elongated oil cup 5. When the range hood is working, the oil accumulated in the upper frame 3 is blocked by the oil baffle 31 and will not flow to the back side of the frame. Instead, it is discharged through the oil guide nozzle 32 and flows into the elongated oil cup 5, thus avoiding oil leakage.

[0030] 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 an air inlet (2), wherein the air inlet (2) is disposed at the bottom of the upper housing (1) and is capable of lifting and lowering relative to the upper housing (1), an upper housing frame (3) is installed on the outer periphery of the bottom of the upper housing (1), a gap (4) is left between the air inlet (2) and the upper housing frame (3), and an elongated oil cup (5) is installed on the bottom rear side of the air inlet (2), characterized in that: Oil baffle grooves (31) are provided at the bottom of the upper box frame (3) located on the left and right sides of the upper box (1). The oil baffle grooves (31) are distributed in the left and right directions. Oil guide nozzles (32) are provided on the inner side of the oil baffle grooves (31). The vertical projection of the oil guide nozzles (32) falls on the long strip oil cup (5).

2. The range hood according to claim 1, characterized in that: The length of the elongated oil cup (5) is greater than the width of the air inlet (2).

3. The range hood according to claim 2, characterized in that: The left and right widths of the upper box frame (3) are greater than the length of the long strip oil cup (5).

4. The range hood according to claim 1, characterized in that: The outer end of the oil baffle groove (31) is close to the outer side wall of the upper box frame (3) or extends to the outer side wall of the upper box frame (3).

5. The range hood according to claim 1, characterized in that: During the synchronous rise and fall of the elongated oil cup (5) and the air inlet (2), the vertical projection of the oil guide nozzle (32) always falls on the elongated oil cup (5).

6. The range hood according to claim 1, characterized in that: The upper box frame (3) is U-shaped and surrounds the bottom left and right sides and front of the upper box (1).

7. The range hood according to claim 6, characterized in that: The front corner of the upper box frame (3) adopts a sealed structure, and the rear end of the upper box frame (3) has a bent edge (33) that bends inward to the side of the frame. The bent edge (33) is fixed to the back of the upper box (1).

8. The range hood according to claim 1, characterized in that: The air inlet (2) is connected to the upper box (1) through a transmission mechanism (6). The upper box (1) is equipped with a drive mechanism (7) that drives the air inlet (2) to rotate and lift relative to the upper box (1).

9. The range hood according to claim 1, characterized in that: The air inlet (2) has an air inlet (20). When the air inlet (2) is completely flipped down, the air inlet (2) extends downward below the upper box (1) and the air inlet (20) is exposed. When the air inlet (2) is completely flipped up, the air inlet (2) is completely hidden inside the upper box (1).

10. The range hood according to claim 9, characterized in that: The air inlet (2) is also equipped with a smoke baffle (8) that can be linked with the air inlet (2). When the air inlet (2) is completely flipped down, the smoke baffle (8) flips forward to the front side of the air inlet (2) to open the air inlet (20). When the air inlet (2) is completely flipped up, the smoke baffle (8) flips backward to the bottom of the air inlet (2) to close the air inlet (20).

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