Range hood

Abstract

The utility model relates to a range hood, which comprises: a housing, the interior of which is hollow to form a chamber, and the front side part of the chamber is provided with an air inlet for external oil fume to enter; the upper end part of the smoke baffle is arranged at the air inlet in an overturning manner, and the smoke baffle can be overturned forwards to a first position to open the air inlet and overturned backwards to a second position to close the air inlet; the oil screen is arranged at the air inlet; the range hood further comprises a telescopic mechanism, the telescopic mechanism is provided with an output end capable of stretching back and forth, the output end and the oil screen are restrained together in a detachable mode, and therefore when the smoke barrier is located at the first position, the telescopic mechanism can drive the oil screen to stretch forwards along the space below the smoke barrier to be separated from the air inlet. The oil screen is convenient to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of kitchen appliances, specifically relates to an extractor hood. BACKGROUND

[0002] The existing extractor hood forms a negative pressure area by the operation of the internal fan system, and the oil fume flow in the kitchen is discharged to the outside of the room under the action of atmospheric pressure after passing through the extractor hood. In order to avoid the escape of oil fume, a movable smoke baffle is generally arranged at the air inlet of the extractor hood, specifically like the Chinese invention patent application "Smoke baffle driving system, smoke baffle driving method, extractor hood and storage medium" with the application number 202310804283.4 and the application publication number CN116734301A, the smoke baffle driving system is connected with the smoke baffle and includes a motor; a transmission mechanism connected between the motor and the smoke baffle, which can convert the rotating action of the motor into the swinging action of driving the smoke baffle; a hydraulic system connected with the transmission mechanism, which is used to provide resistance for the transmission mechanism to adjust the driving speed of the smoke baffle.

[0003] And the air inlet of the existing extractor hood is usually provided with an oil screen, which needs to be taken down and put into the sink for cleaning when cleaning. The existing oil screen is generally located behind the smoke baffle, that is, in the user's visual blind area. When disassembling the oil screen, the user often needs to adopt the posture of bending over and looking down to observe the position of the oil screen, or touch the approximate position with the hand for touch perception, and then take down the oil screen, so that the disassembly of the oil screen is relatively inconvenient. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem that the existing technology provides an extractor hood convenient for disassembling and assembling the oil screen.

[0005] The utility model adopts the technical scheme that an extractor hood comprises:

[0006] A shell, which is hollow inside to form a chamber, the front side of the chamber is provided with an air inlet for the oil fume from outside to enter;

[0007] A smoke baffle, the upper end of which is rotatably arranged at the air inlet around the left-right extending axis, and can be rotated forward to the first position to open the air inlet and rotated backward to the second position to close the air inlet;

[0008] An oil screen, which is arranged at the air inlet;

[0009] The utility model is characterized in that further comprises:

[0010] The telescopic mechanism has an output end capable of telescoping forward and backward, and the output end is detachably connected with the oil screen, so that when the smoke baffle is in the first position, the telescopic mechanism can drive the oil screen to extend forward along the space below the smoke baffle and to be separated from the air inlet.

[0011] Therefore, when the oil screen needs to be detached, the smoke baffle can be opened, and the telescopic mechanism can be used to extend the oil screen forward along the space below the smoke baffle, so that the oil screen is exposed in the field of view of the user, thereby facilitating the user to detach the oil screen; after the oil screen is installed on the output end of the telescopic mechanism, the telescopic mechanism can drive the oil screen to retract backward to the air inlet, so that the oil screen can perform normal oil fume filtering work.

[0012] Preferably, when the oil screen is located at the air inlet, the telescopic mechanism is retracted into the cabinet, so that the design of the telescopic mechanism does not affect the appearance of the range hood and the opening and closing of the smoke baffle.

[0013] In the above scheme, preferably, when the smoke baffle is in the first position, the smoke baffle is inclined forward from top to bottom and located on the front side of the air inlet, and the oil screen can be moved downward from rear to front under the inclination of the telescopic mechanism and located below the lower end of the smoke baffle. Therefore, the movement trajectory of the oil screen can avoid the smoke baffle, and the oil screen can be completely exposed below the smoke baffle after extending forward.

[0014] Further, the oil screen located at the air inlet is inclined forward from bottom to top, and the oil screen located below the lower end of the smoke baffle is vertically arranged. The vertically arranged oil screen can further facilitate its detachment.

[0015] In the above schemes, the telescopic mechanism can use existing electric cylinders, hydraulic cylinders, etc. Preferably, the telescopic mechanism comprises a power source and a connecting rod assembly capable of telescoping forward and backward under the drive of the power source, the rear end of the connecting rod assembly is connected with the power end of the power source, and the front end of the connecting rod assembly is the output end of the telescopic mechanism.

[0016] In order to improve the stability of the overall structure, preferably, the connecting rod assembly has two groups, one on the left and one on the right.

[0017] Preferably, the connecting rod assembly comprises:

[0018] two first connecting rods arranged in X shape, the intersection of the two first connecting rods is rotationally connected, and the rotation axis extends left and right, and the two first connecting rods arranged in X shape are taken as a group of connecting rod members, there are at least two groups arranged in the front-rear direction, the corresponding ends of the first connecting rods of adjacent two groups of connecting rod members are rotationally connected, and the rotation axis extends left and right; the connecting rod member located on the last side is the rear end of the connecting rod assembly.

[0019] The long strip-shaped oil screen support is rotationally connected between the middle portion and the front end of one of the first links of the link members at the most front side through a second link with a rotation axis extending left and right, and is rotationally connected between the upper end and the front end of another first link of the link members at the most front side with a rotation axis extending left and right; the oil screen support is the output end of the telescopic mechanism.

[0020] In this way, the telescoping of the link assembly is realized through the rotation between the first links arranged in X.

[0021] Further, the power source is an electric motor, and the link assembly further comprises a driving rod, a third link, and two fourth links; the first end of the driving rod is connected to the output shaft of the electric motor and can rotate with the output shaft of the electric motor, the second end of the driving rod is rotationally connected to the first end of the third link with a rotation axis extending left and right, the second end of the third link is rotationally connected to the intersection of the two first links of the link members at the most front side with a rotation axis extending left and right; the first end portions of the two fourth links are rotationally connected through a first rotation shaft extending left and right to form a V shape, the second end portions of the two fourth links are respectively rotationally connected to the rear end portions of the two first links of the link members at the most front side with a rotation axis extending left and right, and the housing is provided with a fixing hole for constraining the first rotation shaft.

[0022] In order to further constrain the movement trajectory of the oil screen, preferably, a support plate is vertically arranged in the housing, the support plate is provided with a strip-shaped hole extending front and back and the above-mentioned fixing hole at the rear side of the strip-shaped hole.

[0023] The second rotation shaft at the intersection of the second end of the third link and the two first links of the link members at the most front side is inserted into the strip-shaped hole and can move along the strip-shaped hole, so that the link assembly as a whole moves back and forth along the extension direction of the strip-shaped hole.

[0024] In the above-mentioned schemes, the oil screen and the output end of the telescopic mechanism can be connected through buckling, and in order to further facilitate disassembly and assembly, preferably, the oil screen is constrained together with the output end of the telescopic mechanism through magnetic attraction.

[0025] Compared with the prior art, the advantages of the utility model lie in that: by arranging the telescopic mechanism, when the oil screen needs to be disassembled and assembled, the smoke baffle can be opened, the telescopic mechanism is used to stretch the oil screen forward along the space below the smoke baffle, so that the oil screen is exposed in the visual range of the user, thereby facilitating the user to disassemble and assemble the oil screen; after the oil screen is installed to the output end of the telescopic mechanism, the telescopic mechanism can drive the oil screen to retract backward to the air inlet, so that the oil screen can perform normal oil fume filtering work. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic view of the range hood of the utility model embodiment (the oil screen is located at the air inlet).

[0027] Figure 2 For Figure 1 The longitudinal section view of the range hood;

[0028] Figure 3 For Figure 1 The transverse section view of the range hood;

[0029] Figure 4 For Figure 1 The structure schematic view of the oil screen and the telescopic mechanism;

[0030] Figure 5 For Figure 1 The structure schematic view of the oil screen and the telescopic mechanism from another perspective;

[0031] Figure 6 The structure schematic view of the range hood of the embodiment of the utility model (the oil screen is stretched out to the front and separates from the air inlet);

[0032] Figure 7 For Figure 6 The side view of the range hood;

[0033] Figure 8 For Figure 6 The structure schematic view of the oil screen and the telescopic mechanism;

[0034] Figure 9 For Figure 6 The structure schematic view of the oil screen and the telescopic mechanism from another perspective. DETAILED DESCRIPTION

[0035] The utility model will be described further in detail below in combination with the embodiment of the drawings.

[0036] As Figures 1-9 shown, it is a preferred embodiment of a range hood of the utility model, which comprises a machine shell 1, a smoke baffle 2, an oil screen 3 and a telescopic mechanism 4.

[0037] The side of the range hood facing the user is the front side, the machine shell 1 is internally hollow to form a chamber 10, the front side wall of the chamber 10 is inclined to the front from top to bottom and is provided with an air inlet 10a for the external oil fume to enter. The top wall of the chamber 10 is provided with an air outlet. And the chamber 10 is provided with a centrifugal fan for driving the external oil fume to enter the chamber 10 from the air inlet 10a and to be discharged from the air outlet.

[0038] The upper end of the smoke baffle 2 is rotatably arranged on the upper side of the air inlet 10a about the left-right extending axis and can be rotated to the first position to open the air inlet 10a and to the second position to close the air inlet 10a, and the smoke baffle 2 in the first position is inclined to the front from top to bottom and is located on the front side of the air inlet 10a.

[0039] As shown in Figure 1 , 2 , the oil screen 3 is arranged at the air inlet 10a to filter the oil fume passing through the air inlet 10a, at this time, the oil screen 3 is inclined downward from back to front and upward from bottom to top.

[0040] The telescopic mechanism 4 has an output end capable of telescoping forward and backward, and the output end and the oil screen 3 are constrained together in a detachable manner, so that when the smoke baffle 2 is in the first position, the telescopic mechanism 4 can drive the oil screen 3 to extend forward along the space below the smoke baffle 2 (move downward from back to front and upward from bottom to top) to below the lower end of the smoke baffle 2 and be separated from the air inlet 10a, at this time, the oil screen 3 is arranged vertically, please refer to Figure 6 , 7 . When the oil screen 3 is located at the air inlet 10a, the telescopic mechanism 4 is retracted in the casing 1.

[0041] In this embodiment, as shown in Figure 4 , 5 , 8, 9, the telescopic mechanism 4 includes a motor as a power source 400 and a linkage assembly 40 capable of telescoping forward and backward under the drive of the power source 400. The motor output shaft extends left and right. The linkage assembly 40 has two groups, one left and one right. Specifically, a front and back extending support plate 11 is vertically arranged at a position corresponding to each group of linkage assemblies 40 in the casing 1, and the support plate 11 is provided with a strip-shaped hole 111 extending downward from back to front and a fixing hole 112 located at the rear side of the strip-shaped hole 111, and the extension direction of the strip-shaped hole 111 is defined as a first direction, and the fixing hole 112 is located in the first direction.

[0042] Each linkage assembly 40 includes:

[0043] Two first linkages 41 arranged in X shape, the intersection of the two first linkages 41 is rotationally connected and the rotation axis extends left and right, and the two first linkages 41 arranged in X shape are taken as a group of linkage members, there are multiple groups, arranged along the first direction, and the corresponding end portions of the first linkages 41 of adjacent two groups of linkage members are rotationally connected and the rotation axis extends left and right;

[0044] An oil screen support 46 in strip shape, the middle portion thereof is rotationally connected with the front end portion of one of the first linkages 41 of the linkage member located at the most front side through a second linkage 42 and the rotation axis extends left and right; the upper end portion thereof is rotationally connected with the front end portion of the other first linkage 41 of the linkage member located at the most front side and the rotation axis extends left and right; the oil screen support 46 is the output end of the telescopic mechanism 4;

[0045] The drive rod 45, the third link 43, and the two fourth links 44 are connected. The first end of the drive rod 45 is connected to the motor output shaft and can rotate with the motor output shaft. The second end of the drive rod 45 is rotatably connected to the first end of the third link 43 and the rotation axis extends left and right. The second end of the third link 43 is rotatably connected to the junction of the two first links 41 of the foremost link member through the second rotating shaft 431 and the rotation axis extends left and right. The second rotating shaft 431 is inserted into the strip hole 111 and can move along the strip hole 111. The first ends of the two fourth links 44 are rotatably connected to the left and right extending first rotating shaft 441 and form a V shape. The first rotating shaft 441 is constrained in the fixing hole 112. The second ends of the two fourth links 44 are respectively rotatably connected to the rear ends of the two first links 41 of the foremost link member and the rotation axis extends left and right.

[0046] Thus, when the motor is working and the motor output shaft rotates clockwise or counterclockwise, the motor output shaft can drive the drive rod 45 and the third connecting rod 43 to rotate, thereby driving the second rotating shaft 431 at the end of the third connecting rod 43 to move along the strip hole 111. At this time, since the first ends of the two fourth connecting rods 44 are fixed relative to the support plate 11, the connecting rods rotatably connected to the second ends of the two fourth connecting rods 44 can achieve extension and retraction in the first direction, thereby driving the oil screen bracket 46 to extend forward to the front side of the air inlet or retract backward to the air inlet.

[0047] To facilitate the assembly and disassembly of the oil mesh, in this embodiment, the oil mesh 3 is magnetically secured to the oil mesh bracket 46. Specifically, as shown... Figure 8 , 9 As shown, the oil mesh 3 has a mesh body 30 and a frame 31 surrounding the mesh body 30. The rear sides of the left and right sides of the frame 31 have insertion holes 310. Each oil mesh support 46 has a hook 461 and a magnet 462 on its front side. The hook 461 is located below the magnet 462, and the hook part of the hook 461 can extend into the insertion hole 310 of the oil mesh frame. The magnet 462 can be magnetically attracted to the rear sides of the left and right sides of the frame 31. This achieves the binding of the oil mesh 3 and the oil mesh support 46 together. When installing the oil mesh 3, align the insertion hole 310 on the oil mesh 3 with the hook 461 on the oil mesh support 46 and insert the hook part of the hook 461. Then rotate the oil mesh so that the upper part of the rear sides of the left and right sides of the oil mesh frame 31 is attracted to the magnet 462 on the oil mesh support 46. This facilitates operation.

[0048] 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: The housing (1) has a hollow interior forming a chamber (10), and the front side of the chamber (10) has an air inlet (10a) for external oil fumes to enter. The smoke baffle (2) is provided at the air inlet (10a) with its upper end being able to rotate around the left and right extending axis. It can be rotated forward to the first position to open the air inlet (10a) and rotated backward to the second position to close the air inlet (10a). Oil mesh (3) is provided at the air inlet (10a); Its features It also includes: The telescopic mechanism (4) has an output end that can extend and retract in the front and back. The output end is detachably bound together with the oil mesh (3). So that when the smoke baffle (2) is in the first position, the telescopic mechanism (4) can drive the oil mesh (3) to extend forward along the space below the smoke baffle (2) and disengage from the air inlet (10a).

2. The range hood according to claim 1, characterized in that: When the oil screen (3) is located at the air inlet (10a), the telescopic mechanism (4) is retracted into the housing (1).

3. The range hood according to claim 1, characterized in that: In the first position, the smoke baffle (2) is tilted forward from top to bottom and located in front of the air inlet (10a). The oil mesh (3) can be tilted downward from back to front and located below the lower end of the smoke baffle (2) under the drive of the telescopic mechanism (4).

4. The range hood according to claim 3, characterized in that: The oil mesh (3) located at the air inlet (10a) is inclined forward from bottom to top, and the oil mesh (3) located below the lower end of the smoke baffle (2) is vertically arranged, detached from the air inlet (10a).

5. The range hood according to any one of claims 1 to 4, characterized in that: The telescopic mechanism (4) includes a power source (400) and a linkage assembly (40) that can extend and retract back and forth under the drive of the power source (400). The rear end of the linkage assembly (40) is connected to the power end of the power source (400), and the front end of the linkage assembly (40) is the output end of the telescopic mechanism (4).

6. The range hood according to claim 5, characterized in that: There are two sets of the connecting rod assembly (40), arranged on the left and right.

7. The range hood according to claim 5, characterized in that: The link assembly (40) includes: Two first links (41) arranged in an X-shape are rotatably connected at their junction and their rotation axes extend to the left and right. The two first links (41) arranged in an X-shape form a group of links, and there are at least two groups arranged in the front-back direction. The corresponding ends of the first links (41) of two adjacent groups of links are rotatably connected and their rotation axes extend to the left and right. The link located at the rearmost side is the rear end of the link assembly (40). The elongated oil mesh support (46) has its middle part rotatably connected to the front end of one of the first connecting rods (41) located at the frontmost side via a second connecting rod (42), with the rotation axis extending left and right; its upper end is rotatably connected to the front end of the other first connecting rod (41) located at the frontmost side, with the rotation axis extending left and right; the oil mesh support (46) is the output end of the telescopic mechanism (4).

8. The range hood according to claim 7, characterized in that: The power source (400) is a motor. The linkage assembly (40) also includes a drive rod (45), a third link (43), and two fourth links (44). The first end of the drive rod (45) is connected to the output shaft of the motor and can rotate with the output shaft of the motor. The second end of the drive rod (45) is rotatably connected to the first end of the third link (43) and the rotation axis extends left and right. The second end of the third link (43) is rotatably connected to the junction of the two first links (41) of the frontmost link and the rotation axis extends left and right. The first ends of the two fourth links (44) are rotatably connected to the first rotating shaft (441) extending left and right and form a V shape. The second ends of the two fourth links (44) are respectively rotatably connected to the rear ends of the two first links (41) of the frontmost link and the rotation axis extends left and right. The housing (1) is provided with a fixing hole (112) for constraining the first rotating shaft (441).

9. The range hood according to claim 8, characterized in that: A support plate (11) is erected inside the housing (1). The support plate (11) has a strip-shaped hole (111) extending from front to back and the aforementioned fixing hole (112) located behind the strip-shaped hole (111). The second pivot (431) at the junction of the second end of the third link (43) and the two first links (41) of the foremost link is inserted into the strip hole (111) and can move along the strip hole (111).

10. The range hood according to any one of claims 1 to 4, characterized in that: The oil mesh (3) is magnetically attached to the output end of the telescopic mechanism (4).

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