Range hood

Abstract

The utility model discloses a range hood which comprises a shell, the shell comprises an air inlet formed downwards, a filter element capable of being mounted and dismounted through the air inlet is further arranged in the shell, and the range hood is characterized by further comprising a dismounting and mounting assembly for realizing detachable connection between the filter element and the shell, and the dismounting and mounting assembly comprises a bracket used for supporting the filter element; the first buckle and the second buckle are arranged on the bracket in a sliding mode, the first buckle and the second buckle are arranged on the two opposite sides of the filter element respectively, and the first buckle and the second buckle can move in the direction away from each other and can move in the direction close to each other; when the first buckle and the second buckle move in the direction away from each other, the disassembly and assembly assembly can be connected with the shell, and when the first buckle and the second buckle move in the direction close to each other, the disassembly and assembly assembly can be separated from the shell.

Description

Technical Field

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

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. It can quickly extract stove burnt waste and fumes generated during cooking and discharge them outdoors, reducing pollution and purifying the air.

[0003] For example, a range hood disclosed in the Chinese utility model patent with application number 202320241635.5 includes a shell, a pre-filter device, a rotary filter screen and a post-filter device, the shell has an air inlet, the pre-filter device is arranged at the air inlet of the shell, the front side plate of the shell has a corresponding opening at a position corresponding to the shell, the rotary filter screen can be rotatably arranged in the shell, the post-filter device is arranged downstream of the rotary filter screen along the oil fume flow path, and the post-filter device includes an electrostatic non-woven fabric layer, an activated carbon non-woven fabric layer and an electrostatic cotton layer in sequence along the oil fume flow direction, and the opening of the shell is used to pull the post-filter device out of the shell from the opening forward.

[0004] The filter element (post-filter device) generally needs to be replaced regularly, and in order to achieve appropriate wind resistance and purification effect, the filter element is generally in the shape of a rectangular plate and is relatively heavy. The above-mentioned patent opens an opening on the front side of the shell that is compatible with the filter element, and uses a drawer-like structure to replace the filter element. The sealing performance of this type of structure is relatively poor, which will cause air volume loss and affect the smoking effect. Some VOC odor molecules will escape from the opening, ultimately affecting the purification effect. Even if some products want to solve this problem by sticking a sealing strip on the side edge of the drawer, the drawer structure requires pulling and pulling, so the friction will cause a poor feel when pulling the drawer, or even jamming, and even long-term friction will cause the sealing strip to deform and lose its sealing performance. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a range hood that is convenient for replacing the filter element without affecting the sealing performance in view of the deficiencies in the above-mentioned prior art.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a range hood, comprising a housing, the housing comprising an air inlet opening downwardly, and a filter element which can be installed and removed through the air inlet is also arranged in the housing, characterized in that:

[0007] The range hood further comprises a disassembly assembly that realizes a detachable connection between the filter element and the housing, and the disassembly assembly comprises:

[0008] A bracket for supporting the filter element; and

[0009] A first buckle and a second buckle, the first buckle and the second buckle are both slidably arranged on the bracket, the first buckle and the second buckle are respectively arranged on two opposite sides of the filter element, the first buckle and the second buckle can move in directions away from each other and can move in directions close to each other, when the first buckle and the second buckle move in directions away from each other, the disassembly and assembly component can be connected to the shell, and when the first buckle and the second buckle move in directions close to each other, the disassembly and assembly component can be separated from the shell.

[0010] By using the disassembly and assembly components, the filter element can be quickly disassembled and assembled at the air inlet without damaging the sealing and appearance integrity of the whole machine. It is convenient and labor-saving.

[0011] In order to realize the connection and disconnection of the disassembly and assembly components on the shell, the shell is provided with a first card slot and a second card slot, and the first card slot is formed at the end of the first buckle away from the filter element with a first card slot, and the second card slot is formed at the end of the second buckle away from the filter element with a second card slot. When the first buckle and the second buckle move in a direction away from each other, the first buckle is engaged with the first card slot, and the second buckle is engaged with the second card slot. When the first buckle and the second buckle move in a direction close to each other, the first buckle is disengaged from the first card slot, and the second hand is disengaged from the second card slot.

[0012] To facilitate operation, the disassembly and assembly assembly also includes a first elastic member and a second elastic member capable of maintaining the tendency of the first handle and the second handle to move away from each other, one end of the first elastic member abuts against the bracket, and the other end of the first elastic member abuts against the first handle, one end of the second elastic member abuts against the bracket, and the other end of the second elastic member abuts against the bracket.

[0013] In order to facilitate hand grasping, a first groove is formed on the first buckle, and a second groove is formed on the second buckle. The first groove and the second groove are both formed by the bottom surface of the bracket being recessed upward. The bottom of the bracket is respectively provided with a first opening and a second opening for the hand to pass through. The first opening is arranged corresponding to the first groove, and the second opening is arranged corresponding to the second groove.

[0014] In order to limit the position of the filter element, the disassembly and assembly assembly further includes a cover body disposed on the bracket, and the filter element is limited between the bracket and the cover body.

[0015] In order to improve the sealing performance, a sealing strip is arranged between the top of the cover and the shell.

[0016] In order to detect the use status of the filter element and facilitate maintenance and replacement, the range hood also includes a sensor component that can directly or indirectly detect the weight of the filter element.

[0017] In order to set up the sensor assembly, the sensor assembly includes a first sensor and a second sensor, the first sensor is set corresponding to the first card slot, the first card end is pressed on the first sensor, the second sensor is set corresponding to the second card slot, and the second card end is pressed on the second sensor.

[0018] In order to collect smoke, the range hood further comprises a smoke collecting hood arranged under the air inlet.

[0019] In order to facilitate the disassembly and assembly of the smoke collecting hood, the smoke collecting hood is connected to the shell through a buckle.

[0020] Compared with the prior art, the utility model has the advantages of: by using a disassembly assembly component, the filter element can be quickly disassembled and assembled at the air inlet without damaging the sealing and appearance integrity of the whole machine, which is convenient and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the installation of a range hood according to an embodiment of the utility model;

[0022] Figure 2 A longitudinal cross-sectional view of a range hood according to an embodiment of the utility model;

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

[0024] Figure 4 A partial cross-sectional view of a range hood according to an embodiment of the utility model;

[0025] Figure 5 It is a transverse cross-sectional view of a range hood according to an embodiment of the utility model. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] 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.

[0028] See also Figure 1 to Figure 4 A range hood is suspended under a ceiling 200 by four ropes 100, and is particularly suitable for use in restaurant scenes, such as hot pot and barbecue. The range hood includes a housing 1. The housing 1 includes an air inlet 11 opened downward, and a smoke hood 6 is arranged under the air inlet 11. The smoke hood 6 is connected to the housing 1 by a buckle 7.

[0029] A filter element 2 for filtering oil smoke and / or odor is also provided in the housing 1. The filter element 2 can be separated from the housing 1 at the air inlet 11, so that it can be maintained and replaced.

[0030] See also Figure 2 to Figure 5 The range hood further comprises a disassembly assembly for realizing a detachable connection between the filter element 2 and the housing 1. The disassembly assembly comprises a bracket 31, a cover 36, a first buckle 32 and a second buckle 33. The bracket 31 is used to support the filter element 2, and the cover 36 is covered on the bracket 31, and the cover 36 and the bracket 31 can be connected in a buckle form. The filter element 2 is limited between the bracket 31 and the cover 36. The first buckle 32 and the second buckle 33 are both slidably arranged on the bracket 31, and the first buckle 32 and the second buckle 33 are respectively arranged on opposite sides of the filter element 2. The first buckle 32 and the second buckle 33 can move in a direction away from each other and can move in a direction close to each other. When the first buckle 32 and the second buckle 33 move in a direction away from each other, the disassembly assembly can be connected to the housing 1, thereby realizing the installation of the filter element 2. When the first buckle 32 and the second buckle 33 move in a direction close to each other, the disassembly assembly can be separated from the housing 1, thereby realizing the removal of the filter element 2.

[0031] The housing 1 is provided with a first card slot 12 and a second card slot 13. A first card slot 321 that is engaged with the first card slot 12 is formed at one end of the first buckle 32 away from the filter element 2, and a second card slot 331 that is engaged with the second card slot 13 is formed at one end of the second buckle 33 away from the filter element 2. When the first buckle 32 and the second buckle 33 move in a direction away from each other, the first buckle 32 is engaged with the first card slot 12, and the second buckle 33 is engaged with the second card slot 13. When the first buckle 32 and the second buckle 33 move in a direction toward each other, the first buckle 32 is disengaged from the first card slot 12, and the second buckle 33 is disengaged from the second card slot 13.

[0032] The disassembly assembly also includes a first elastic member 34 and a second elastic member 35 capable of maintaining the tendency of the first buckle 32 and the second buckle 33 to move away from each other. One end of the first elastic member 34 abuts against the bracket 31, and the other end of the first elastic member 34 abuts against the first buckle 32. One end of the second elastic member 35 abuts against the bracket 31, and the other end of the second elastic member 35 abuts against the bracket 31.

[0033] The first handle 32 is formed with a first groove 322 for easy grasping by hand, and the second handle 33 is formed with a second groove 332 for easy grasping by hand. The first groove 322 and the second groove 332 are both formed by the bottom surface of the first handle 32 being recessed upward. The bottom of the bracket 31 is respectively provided with a first opening 311 and a second opening 312 for easy passage of hand, the first opening 311 is arranged corresponding to the first groove 322, and the second opening 312 is arranged corresponding to the second groove 332.

[0034] A sealing strip 4 is provided between the top of the cover 36 and the housing 1. Preferably, the sealing strip 4 is hollow. The disassembly and assembly direction of the assembly and disassembly components is vertical, and the hollow sealing strip 4 has good elasticity and the elasticity direction is also vertical, so the cover 36 will not rub against the sealing strip 4 to generate large friction, ensuring good sealing, thereby improving the oil fume absorption effect and purification effect.

[0035] The range hood further includes a sensor assembly capable of directly or indirectly detecting the weight of the filter element 2. The sensor assembly includes a first sensor 51 and a second sensor 52. The first sensor 51 is arranged corresponding to the first card slot 12, and the first card connection end 321 is pressed on the first sensor 51. The second sensor 52 is arranged corresponding to the second card slot 13, and the second card connection end 331 is pressed on the second sensor 52. The first sensor 51 and the second sensor 52 are preferably both pressure sensors.

[0036] The working principle of the sensor assembly is:

[0037] N sensors are arranged on opposite sides of the disassembly and assembly components. When the filter element 2 is placed, the sensors will record the deformation amount.

[0038] Assume that the first sensor 51 is arranged on the left side, and the number of the first sensors 51 is X1...X n , the second sensor 52 is arranged on the right side, and the number of the second sensors 52 is X n+1 …X 2n , then the force on the left side F1=f(X1)…f(X n ), the force on the right side F2=f(X n+1 )…f(X 2n ).

[0039] 1) Check whether the filter element 2 is placed horizontally:

[0040] Since the air inlet direction is vertical, whether the filter element 2 is placed horizontally affects the air inlet area, thereby affecting the smoking effect and purification effect.

[0041] The difference percentage of the forces on the left and right sides is Q=|F1-F2| / F0 (F0 is the smaller of F1 and F2). If Q≥2%, it will remind that the filter element 2 is not placed horizontally and the filter element 2 needs to be re-placed.

[0042] 2) Prompt to replace filter element 2:

[0043] Since filter element 2 is adsorbed, long-term use will cause the force on the sensor to change. The initial forces on both sides of filter element 2 are recorded as F 初始1 and F 初始2 , the rate of change of the force on the left side P1 = (F1-F 初始1 ) / F 初始1 , the rate of change of the force on the right side P2 = (F2-F 初始2 ) / F 初始2 When P1 and P2 are both ≥20%, a prompt will appear to replace the filter element.

[0044] When the filter element 2 needs to be replaced, the first groove 322 of the first buckle 32 and the second groove 332 of the second buckle 33 are pressed by hand to move the first buckle 32 and the second buckle 33 towards each other, and the corresponding first elastic member 34 and second elastic member 35 are compressed, the first clamping end 321 is disengaged from the first clamping groove 12, and the second clamping end 331 is disengaged from the second clamping groove 13, and the disassembly assembly and the filter element 2 can be disassembled from the housing 1, and then the filter element 2 is separated from the disassembly assembly, and the operation of replacing the filter element 2 can be carried out.

[0045] When the filter element 2 needs to be installed in the shell 1, first remove the smoke hood 6, press the first groove 322 of the first buckle 32 and the second groove 332 of the second buckle 33 by hand, so that the first buckle 32 and the second buckle 33 move towards each other, and the corresponding first elastic member 34 and second elastic member 35 are compressed, and the disassembly assembly and the filter element 2 are inserted upward into the shell 1. When the first clamping end 321 and the first clamping end 331 are at the same height as the second clamping end 13, release the two buckles, and the first elastic member 34 and the second elastic member 35 are reset, so that the first clamping end 321 is clamped with the first clamping groove 12, and the second clamping end 331 is clamped with the second clamping groove 13. Finally, install the smoke hood 6 to complete the replacement of the filter element 2.

Claims

1. A range hood, comprising a housing (1), the housing (1) comprising an air inlet (11) opened downwardly, the housing (1) further comprising a filter element (2) which can be installed and removed through the air inlet (11), wherein: The range hood further comprises a disassembly assembly for realizing a detachable connection between the filter element (2) and the housing (1), the disassembly assembly comprising: a bracket (31) for supporting the filter element (2); and A first buckle (32) and a second buckle (33), wherein the first buckle (32) and the second buckle (33) are both slidably arranged on the bracket (31), and the first buckle (32) and the second buckle (33) are respectively arranged on two opposite sides of the filter element (2), and the first buckle (32) and the second buckle (33) can move in a direction away from each other and can move in a direction close to each other, and when the first buckle (32) and the second buckle (33) move in a direction away from each other, the disassembly assembly can be connected to the shell (1), and when the first buckle (32) and the second buckle (33) move in a direction close to each other, the disassembly assembly can be separated from the shell (1).

2. The range hood according to claim 1, characterized in that: The shell (1) is provided with a first clamping slot (12) and a second clamping slot (13); the first clamping hand (32) is formed with a first clamping end (321) that is clamped and matched with the first clamping slot (12) at one end away from the filter element (2); the second clamping hand (33) is formed with a second clamping end (331) that is clamped and matched with the second clamping slot (13) at one end away from the filter element (2); when the first clamping hand (32) and the second clamping hand (33) move in a direction away from each other, the first clamping hand (32) is clamped with the first clamping slot (12), and the second clamping hand (33) is clamped with the second clamping slot (13); when the first clamping hand (32) and the second clamping hand (33) move in a direction toward each other, the first clamping hand (32) is disengaged from the first clamping slot (12), and the second clamping hand (33) is disengaged from the second clamping slot (13).

3. The range hood according to claim 2, characterized in that: The disassembly and assembly assembly further comprises a first elastic member (34) and a second elastic member (35) capable of maintaining the tendency of the first buckle (32) and the second buckle (33) to move away from each other, wherein one end of the first elastic member (34) abuts against the bracket (31), and the other end of the first elastic member (34) abuts against the first buckle (32), one end of the second elastic member (35) abuts against the bracket (31), and the other end of the second elastic member (35) abuts against the bracket (31).

4. The range hood according to claim 3, characterized in that: The first buckle (32) is formed with a first groove (322) for easy grasping by hand, and the second buckle (33) is formed with a second groove (332) for easy grasping by hand. The first groove (322) and the second groove (332) are both formed by the bottom surface of the first buckle (322) being recessed upward. The bottom of the bracket (31) is respectively provided with a first opening (311) and a second opening (312) for easy passage of hand. The first opening (311) is arranged corresponding to the first groove (322), and the second opening (312) is arranged corresponding to the second groove (332).

5. The range hood according to claim 1, characterized in that: The disassembly and assembly assembly further comprises a cover body (36) which is arranged on the bracket (31), and the filter element (2) is limitedly located between the bracket (31) and the cover body (36).

6. The range hood according to claim 5, characterized in that: A sealing strip (4) is provided between the top of the cover (36) and the shell (1).

7. The range hood according to claim 2, characterized in that: The range hood also includes a sensor component capable of directly or indirectly detecting the weight of the filter element (2).

8. The range hood according to claim 7, characterized in that: The sensor assembly comprises a first sensor (51) and a second sensor (52); the first sensor (51) is arranged corresponding to the first card slot (12), and the first card connection end (321) is pressed onto the first sensor (51); the second sensor (52) is arranged corresponding to the second card slot (13), and the second card connection end (331) is pressed onto the second sensor (52).

9. The range hood according to any one of claims 1 to 8, characterized in that: The range hood further comprises a fume collecting hood (6) arranged below the air inlet (11).

10. The range hood according to claim 9, characterized in that: The smoke collecting hood (6) is connected to the housing (1) via a buckle (7).

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