Range hood

Abstract

The utility model discloses a range hood which comprises a fan frame and an exhaust fume collecting hood arranged below the fan frame, the range hood further comprises a connecting assembly arranged between the fan frame and the exhaust fume collecting hood, the connecting assembly is arranged on the exhaust fume collecting hood and surrounds the outer side of the fan frame, and the bottom of the fan frame is located on the inner side of the connecting assembly. The connecting assembly is connected with the fan frame in a lifting mode so that the exhaust fume collecting hood can ascend and descend relative to the fan frame, a gap is reserved between the connecting assembly and the fan frame, the range hood further comprises a sealing assembly arranged at the gap, the sealing assembly is arranged on the outer side of the fan frame in a surrounding mode, and a pressing connection assembly extending in the direction of the fan frame is formed on the connecting assembly. And when the exhaust fume collecting hood moves downwards, the bottom of the crimping assembly can be crimped with the top of the sealing assembly so as to block the corresponding part of the gap. Compared with the prior art, the utility model has the advantage that the problems of pressure relief at the gap and oil floating at the bottom of the fan frame can be solved.

Description

Technical Field

[0001] The utility model relates to an oil fume purification device, in particular to an oil fume extractor. Background Art

[0002] Range hoods have become one of the indispensable kitchen appliances in modern families.

[0003] For example, a range hood disclosed in a Chinese invention patent with application number 202311348873.7 includes a fan device and a smoke collecting device that can move up and down relative to the fan device. The smoke collecting device includes a connected mounting structure and a smoke collecting hood. The range hood also includes a driving device. Under the driving force of the driving device, the mounting structure can move up and down relative to the fan housing, thereby driving the smoke collecting hood to move up and down relative to the fan housing.

[0004] The mounting structure of the above patent can move up and down relative to the fan housing. There will be a gap between the mounting structure and the fan housing. When the range hood is working, the air inlet channel will be depressurized at the gap, resulting in a decrease in the wind pressure at the air inlet, affecting the oil fume extraction effect. In addition, the gap is prone to produce oil droplets hanging on the bottom edge of the fan housing. When the range hood is working, when air enters the main air inlet channel from the outside of the gap, the oil droplets will be blown away, resulting in the oil floating problem. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a range hood for the above-mentioned deficiencies in the prior art, which can solve the problems of pressure relief at the gap and oil floating at the bottom of the fan frame.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a range hood comprising a fan frame and a smoke collecting hood arranged below the fan frame, the range hood also comprising a connecting assembly arranged between the fan frame and the smoke collecting hood, the connecting assembly being arranged on the smoke collecting hood and surrounding the outside of the fan frame, the bottom of the fan frame being located on the inner side of the connecting assembly, the connecting assembly being connected to the fan frame for lifting and lowering so that the smoke collecting hood can be lifted and lowered relative to the fan frame, a gap being left between the connecting assembly and the fan frame, and characterized in that: the range hood also comprises a sealing assembly arranged at the gap, the sealing assembly is arranged around the outside of the fan frame, a crimping assembly extending toward the direction of the fan frame is formed on the connecting assembly, and when the smoke collecting hood moves downward, the bottom of the crimping assembly can be crimped with the top of the sealing assembly to seal the corresponding part of the gap.

[0007] Through the upper and lower pressing and separating structure of the connecting component and the sealing component, a reliable sealing effect is achieved, solving the problem of oil accumulation and oil drift at the bottom edge of the fan frame. In addition, the pressing and separating structure allows a larger movement gap between the connecting component and the fan frame, reduces the dimensional accuracy requirements of the parts, improves the economy, and makes the lifting movement more reliable.

[0008] In order to play a sealing role, the sealing assembly includes a first sealing member, a second sealing member and a third sealing member, wherein the first sealing member is arranged at the front side of the wind frame and extends in the left-right direction, and the second sealing member and the third sealing member are arranged at the left and right sides of the wind frame respectively and extend in the front-back direction;

[0009] The connecting assembly includes a first plate, a second plate and a third plate, wherein the first plate is arranged corresponding to the front side of the wind rack, the second plate and the third plate are arranged corresponding to the left and right sides of the wind rack, and the second plate and the third plate are both connected to the first plate and are arranged on the left and right sides of the first plate respectively;

[0010] The crimping assembly includes a first crimping piece, a second crimping piece and a third crimping piece. The first crimping piece is arranged on the first plate body and extends toward the corresponding side of the wind rack, and the bottom of the first crimping piece can be crimped with the top of the first sealing piece. The second crimping piece is arranged on the second plate body and extends toward the corresponding side of the wind rack, and the bottom of the second crimping piece can be crimped with the second sealing piece. The third crimping piece is arranged on the third plate body and extends toward the corresponding side of the wind rack, and the bottom of the third crimping piece can be crimped with the top of the third sealing piece.

[0011] In order to realize the crimping piece structure, the first plate body, the second plate body and the third plate body are integrally formed, the first crimping piece is formed by bending the top of the first plate body toward the corresponding side of the wind rack, the second crimping piece is formed by bending the top of the second plate body toward the corresponding side of the wind rack, and the third crimping piece is formed by bending the top of the third plate body toward the corresponding side of the wind rack.

[0012] To ensure sealing at each position, the length of the first seal corresponds to the front width of the fan rack, the lengths of the second seal and the third seal correspond to the corresponding side widths of the fan rack, and each crimping piece corresponds to the length of the corresponding seal.

[0013] Preferably, the connecting assembly also includes a fourth plate body arranged at the rear of the fan frame, the fourth plate body is arranged on the smoke hood, the fourth plate body is connected to the fan frame for lifting, and the ends of the second plate body and the third plate body away from the first plate body are connected to the fourth plate body.

[0014] In order to realize the lifting function, the range hood further comprises a lifting device arranged between the fan frame and the fourth plate body.

[0015] In order to realize the lifting function, the lifting device is arranged on the fan frame, and the lifting device includes a linear drive module, and the linear drive module includes a motor, a screw rod and a slider. The screw rod is driven by the motor and can rotate around its own axis. The screw rod is arranged longitudinally, and the slider is arranged on the screw rod. The slider can move in the length direction of the screw rod as the screw rod rotates, and the slider is connected to the fourth plate.

[0016] In order to improve the lifting stability, the range hood further comprises a slide rail device arranged between the fan frame and the fourth plate body.

[0017] In order to set up the lifting device, the fourth plate body includes a main body, a first extension part and a second extension part arranged corresponding to the rear side of the wind rack, the first extension part extends from the left side of the main body toward the front, and the second extension part extends from the right side of the main body toward the front, the first extension part is arranged corresponding to the left side of the wind rack, and the second extension part is arranged corresponding to the right side of the wind rack, the second plate body is connected to the first extension part, and the third plate body is connected to the second extension part.

[0018] In order to improve the lifting stability, a slide rail device is provided between the first extension part and the left side of the wind frame, and between the second extension part and the right side of the wind frame.

[0019] In order to improve the lifting stability, a slide rail device is arranged between the left and right sides of the main body and the rear side of the fan frame.

[0020] Compared with the prior art, the utility model has the advantages of achieving a reliable sealing effect through the upper and lower pressing and separating structures of the connecting assembly and the sealing assembly, solving the problems of oil accumulation and oil drift at the bottom edge of the fan frame. In addition, the pressing and separating structure allows a larger movement gap between the connecting assembly and the fan frame, reduces the requirements for the dimensional accuracy of the components, improves the economy, and makes the lifting movement more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the smoke collecting hood of the range hood of the embodiment of the utility model after being raised;

[0022] Figure 2 It is a cross-sectional view of the range hood of the utility model after the fume collecting hood is raised;

[0023] Figure 3 for Figure 2 Enlarged view of part I;

[0024] Figure 4It is a schematic diagram of the fan frame, the fume hood and the connecting components after the fume hood of the range hood of the embodiment of the utility model is raised;

[0025] Figure 5 It is an exploded view of the fan frame, the fume hood and the connecting components from the right side of the range hood after the fume hood of the range hood of the embodiment of the utility model is raised;

[0026] Figure 6 It is an exploded view of the fan frame, the fume hood and the connecting components from the left side of the range hood after the fume hood of the range hood of the embodiment of the utility model is raised;

[0027] Figure 7 It is an exploded view of the fan frame, the fume hood and the connecting components from the rear side after the fume hood of the range hood of the embodiment of the utility model is raised;

[0028] Figure 8 It is a schematic diagram of the smoke collecting hood of the range hood according to the embodiment of the utility model after it is lowered;

[0029] Fig. 9 A side cross-sectional view of the range hood after the fume hood of the range hood according to the embodiment of the utility model is lowered;

[0030] Fig.10 for Fig. 9 Enlarged view of part II;

[0031] Fig.11 It is a schematic diagram of the fan frame, the fume hood and the connecting components of the range hood after the fume hood of the range hood according to the embodiment of the utility model is lowered;

[0032] Fig.12 It is a front cross-sectional view of the range hood after the fume collecting hood of the embodiment of the utility model is lowered;

[0033] Fig.13 for Fig.12 Enlarged view of part III;

[0034] Fig.14 for Fig.12 Magnified view of local IV;

[0035] Fig.15 This is an exploded view of the sealing assembly of the range hood according to an embodiment of the utility model. DETAILED DESCRIPTION

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0037] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present utility model can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0038] See also Figure 1-2 and Figure 3-4 A range hood includes a housing 7, a fan frame 1 and a fume collecting hood 2 arranged below the fan frame 1 are arranged in the housing 7. An air inlet 21 is provided on the fume collecting hood 2. The inner side of the fume collecting hood 2 is fluidically connected to the inner side of the fan frame 1, and an air inlet channel is formed between the inner side of the fume collecting hood 2 and the inner side of the fan frame 1. A fan system 8 is arranged in the fan frame 1.

[0039] See also Figures 4 to 7 and Fig.11 The range hood further comprises a connecting assembly 3 arranged between the fan frame 1 and the fume hood 2. The connecting assembly 3 is arranged on the fume hood 2 and surrounds the outside of the fan frame 1. The bottom of the fan frame 1 is located inside the connecting assembly 3. The connecting assembly 3 is connected to the fan frame 1 in a lifting manner so that the fume hood 2 can be lifted and lowered relative to the fan frame 1.

[0040] The connecting assembly 3 includes a first plate 31, a second plate 32, a third plate 33 and a fourth plate 34. The first plate 31 is arranged corresponding to the front side of the fan rack 1, the second plate 32 is arranged corresponding to the left side of the fan rack 1, and the third plate 33 is arranged corresponding to the right side of the fan rack 1. The second plate 32 and the third plate 33 are both connected to the first plate 31 and are respectively arranged on the left and right sides of the first plate 31. In this embodiment, the first plate 31, the second plate 32 and the third plate 33 are integrally formed. The fourth plate 34 is arranged at the rear of the fan rack 1. The fourth plate 34 includes a main body 341, a first extension portion 342 and a second extension portion 343 arranged corresponding to the rear side of the fan rack 1. The main body 341 is arranged on the smoke hood 2. The first extension portion 342 extends from the left side of the main body 341 toward the front, and the second extension portion 343 extends from the right side of the main body 341 toward the front. The first extension portion 342 is arranged corresponding to the left side of the wind rack 1, and the second extension portion 343 is arranged corresponding to the right side of the wind rack 1. One end of the second plate body 32 away from the first plate body 31 is connected to the first extension portion 342, and one end of the third plate body 33 away from the first plate body 31 is connected to the second extension portion 343.

[0041] See also Figure 2 to Figure 15 , a gap 100 is left between each plate of the connecting component 3 and the corresponding side of the fan frame 1. The range hood also includes a sealing component arranged at the gap 100, and the sealing component includes a first seal 41, a second seal 42 and a third seal 43. Preferably, each seal is made of rubber. The first seal 41 is arranged on the front side of the fan frame 1, and the first seal 41 extends in the left-right direction, and the length of the first seal 41 corresponds to the front width of the fan frame 1. The second seal 42 is arranged on the left side of the fan frame 1, and the second seal 42 extends in the front-to-back direction, and the length of the second seal 42 corresponds to the left width of the fan frame 1. The third seal 43 is arranged on the right side of the fan frame 1, and the third seal 43 extends in the front-to-back direction, and the length of the third seal 43 corresponds to the right width of the fan frame 1.

[0042] A crimping assembly extending toward the fan rack 1 is formed on the connection assembly 3. When the smoke hood 2 moves downward, the bottom of the crimping assembly is crimped with the top of the sealing assembly to seal the corresponding part of the gap 100. The crimping assembly includes a first crimping member 311, a second crimping member 321, and a third crimping member 331. The first crimping member 311 is arranged on the first plate body 31 and extends toward the direction of the corresponding side of the fan rack 1. The length of the first crimping member 311 corresponds to the length of the first sealing member 41, and the bottom of the first crimping member 311 can be crimped with the top of the first sealing member 41. The second crimping member 321 is arranged on the second plate body 32 and extends toward the direction of the corresponding side of the fan rack 1. The length of the second crimping member 321 corresponds to the length of the second sealing member 42, and the bottom of the second crimping member 321 can be crimped with the second sealing member 42. The third crimping member 331 is disposed on the third plate body 33 and extends toward the direction of the corresponding side of the wind rack 1. The length of the third crimping member 331 corresponds to the length of the third sealing member 43. The bottom of the third crimping member 331 can be crimped with the top of the third sealing member 43. The structure of the crimping member and the sealing member can also be used between the fourth plate body 34 and the wind rack 1 to achieve the sealing effect of the corresponding part of the gap 100.

[0043] Through the upper and lower pressing and separating structures of the connecting assembly and the sealing assembly, a reliable sealing effect is achieved, solving the problem of oil accumulation and oil drift at the bottom edge of the fan rack 1. In addition, the pressing and separating structure allows a larger movement gap between the connecting assembly and the fan rack 1, reduces the requirements for the dimensional accuracy of the parts, improves the economy, and makes the lifting movement more reliable.

[0044] In this embodiment, the first crimping member 311 is formed by bending the top of the first plate 31 toward the direction corresponding to the side of the wind rack 1. The second crimping member 321 is formed by bending the top of the second plate 32 toward the direction corresponding to the side of the wind rack 1. The third crimping member 331 is formed by bending the top of the third plate 33 toward the direction corresponding to the side of the wind rack 1.

[0045] The range hood further includes a lifting device disposed between the fan frame 1 and the fourth plate body 34. The lifting device is disposed on the fan frame 1, and includes a linear drive module, which includes a motor 51, a screw rod 52, and a slider 53. The screw rod 52 is driven by the motor 51 and can rotate around its own axis. The screw rod 52 is arranged longitudinally, and the slider 53 is disposed on the screw rod 52. The slider 53 can move in the length direction of the screw rod 52 as the screw rod 52 rotates, and the slider 53 is connected to the body 341 of the fourth plate body 34. It can also be replaced by other existing linear drive modules, such as the cooperation of a motor and a gear rack, a cylinder, an electric push rod, etc.

[0046] The range hood further includes a slide rail device 6 disposed between the fan frame 1 and the fourth plate body 34. The slide rail device 6 is disposed between the first extension portion 342 and the left side of the fan frame 1, and between the second extension portion 343 and the right side of the fan frame 1. The slide rail device 6 is also disposed between the left and right sides of the body 341 and the rear side of the fan frame 1. The slide rail device 6 includes a fixed rail 61 and a slide rail 62 slidably matched with the fixed rail 61. The fixed rail 61 is disposed on the fan frame 1, and the slide rail 62 is disposed on the fourth plate body 34.

[0047] The "fluid communication" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A range hood, comprising a fan frame (1) and a fume hood (2) arranged below the fan frame (1), the range hood further comprising a connecting assembly (3) arranged between the fan frame (1) and the fume hood (2), the connecting assembly (3) being arranged on the fume hood (2) and surrounding the outside of the fan frame (1), the bottom of the fan frame (1) being located on the inner side of the connecting assembly (3), the connecting assembly (3) being connected to the fan frame (1) in a lifting manner so that the fume hood (2) can be lifted and lowered relative to the fan frame (1), a gap (100) being left between the connecting assembly (3) and the fan frame (1), characterized in that: The range hood further comprises a sealing component arranged at the gap (100), the sealing component being arranged around the outside of the fan frame (1), the connecting component (3) being provided with a crimping component extending in the direction of the fan frame (1), and when the smoke collecting hood (2) moves downward, the bottom of the crimping component can be crimped with the top of the sealing component to seal the corresponding part of the gap (100).

2. The range hood according to claim 1, characterized in that: The sealing assembly comprises a first sealing member (41), a second sealing member (42) and a third sealing member (43), wherein the first sealing member (41) is arranged at the front side of the wind frame (1), and the first sealing member (41) extends in the left-right direction, and the second sealing member (42) and the third sealing member (43) are respectively arranged on the left and right sides of the wind frame (1) and extend in the front-back direction; The connecting assembly (3) comprises a first plate (31), a second plate (32) and a third plate (33), wherein the first plate (31) is arranged corresponding to the front side of the wind frame (1), the second plate (32) and the third plate (33) are arranged corresponding to the left and right sides of the wind frame (1), and the second plate (32) and the third plate (33) are both connected to the first plate (31) and are respectively arranged on the left and right sides of the first plate (31); The crimping assembly comprises a first crimping component (311), a second crimping component (321) and a third crimping component (331), wherein the first crimping component (311) is arranged on the first plate body (31) and extends in the direction of the corresponding side of the wind rack (1), and the bottom of the first crimping component (311) can be crimped with the top of the first sealing component (41), the second crimping component (321) is arranged on the second plate body (32) and extends in the direction of the corresponding side of the wind rack (1), and the bottom of the second crimping component (321) can be crimped with the second sealing component (42), and the third crimping component (331) is arranged on the third plate body (33) and extends in the direction of the corresponding side of the wind rack (1), and the bottom of the third crimping component (331) can be crimped with the top of the third sealing component (43).

3. The range hood according to claim 2, characterized in that: The first plate body (31), the second plate body (32) and the third plate body (33) are integrally formed; the first crimping piece (311) is formed by bending the top of the first plate body (31) toward the corresponding side of the wind rack (1); the second crimping piece (321) is formed by bending the top of the second plate body (32) toward the corresponding side of the wind rack (1); and the third crimping piece (331) is formed by bending the top of the third plate body (33) toward the corresponding side of the wind rack (1).

4. The range hood according to claim 2, characterized in that: The length of the first sealing member (41) corresponds to the front width of the fan frame (1), the lengths of the second sealing member (42) and the third sealing member (43) respectively correspond to the corresponding side widths of the fan frame (1), and each crimping member respectively corresponds to the length of the corresponding sealing member.

5. The range hood according to any one of claims 2 to 4, characterized in that: The connecting assembly (3) further comprises a fourth plate body (34) arranged at the rear of the fan frame (1); the fourth plate body (34) is arranged on the smoke collecting hood (2); the fourth plate body (34) is connected to the fan frame (1) in a lifting manner; and the ends of the second plate body (32) and the third plate body (33) away from the first plate body (31) are both connected to the fourth plate body (34).

6. The range hood according to claim 5, characterized in that: The range hood further comprises a lifting device arranged between the fan frame (1) and the fourth plate body (34).

7. The range hood according to claim 6, characterized in that: The lifting device is arranged on the wind turbine frame (1), and comprises a linear drive module, wherein the linear drive module comprises a motor (51), a screw rod (52) and a slider (53), wherein the screw rod (52) is driven by the motor (51) and can rotate around its own axis, wherein the screw rod (52) is arranged longitudinally, wherein the slider (53) is arranged on the screw rod (52), wherein the slider (53) can move in the length direction of the screw rod (52) as the screw rod (52) rotates, and wherein the slider (53) is connected to the fourth plate body (34).

8. The range hood according to claim 7, characterized in that: The range hood further comprises a slide rail device (6) arranged between the fan frame (1) and the fourth plate body (34).

9. The range hood according to claim 8, characterized in that: The fourth plate body (34) comprises a main body (341) arranged corresponding to the rear side of the wind rack (1), a first extension portion (342) and a second extension portion (343), wherein the first extension portion (342) extends from the left side of the main body (341) toward the front, and the second extension portion (343) extends from the right side of the main body (341) toward the front, the first extension portion (342) is arranged corresponding to the left side of the wind rack (1), and the second extension portion (343) is arranged corresponding to the right side of the wind rack (1), the second plate body (32) and the first extension portion (342) are connected, and the third plate body (33) and the second extension portion (343) are connected.

10. The range hood according to claim 9, characterized in that: A slide rail device (6) is provided between the first extension portion (342) and the left side of the fan frame (1), and between the second extension portion (343) and the right side of the fan frame (1).

11. The range hood according to claim 9, characterized in that: Slide rail devices (6) are provided between the left and right sides of the body (341) and the rear side of the fan frame (1).

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