A range hood

Abstract

A kind of range hood, comprising: first cabinet, inside hollow forms the first chamber with the bottom with open mouth;Second cabinet, can be movably inserted in first cabinet, second, first cabinet between second cabinet at least lower part is open and located in the lower side of first cabinet with the extended state of second cabinet, and second cabinet is relative to the folding state of first cabinet upward;Smoke baffle, can be movably arranged in the front side of air inlet;Power element and the transmission mechanism connected with the output end of power element, for driving second cabinet and smoke baffle move, when second cabinet moves to folding state, smoke baffle is located in the first position of first cabinet open mouth upper side, when second cabinet moves to extended state, smoke baffle is located in the second position of second cabinet air inlet upper side, the distance between second, first position is greater than the distance between the extended, folding state of second cabinet.The utility model is convenient for controlling each component lifting, and the effect of oil fume absorption is better when working.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a range hood. Background Technology

[0002] Most range hoods are currently installed at a fixed height on the wall. Once installed, this cannot be changed. If installed too high, the following problems arise: First, cooking fumes cannot be fully exhausted outdoors, polluting the kitchen and harming the health of those working in it; second, cleaning is inconvenient. If installed too low, it obstructs the work of those in the kitchen. Furthermore, the varying heights of kitchen workers also necessitate different installation heights for the range hood. Additionally, while the hood needs to be low when operating, users often prefer it to be raised when not in use to make the kitchen space appear larger and more aesthetically pleasing.

[0003] Most range hoods on the market currently use a single-motion system where the baffle plate is raised or lowered, or the housing moves up and down. The baffle plate and the housing move up and down, respectively, are driven by independent drive mechanisms. This is costly, and the increased number of drive mechanisms inevitably takes up too much internal space in the range hood, making the product control system more complex.

[0004] Furthermore, how to improve the fume extraction effect within a limited lifting stroke needs further improvement. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a range hood that is easy to control the lifting and lowering of each component, has a good oil fume extraction effect when working, and has a concealed effect when not working, in view of the current situation of the prior art.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a range hood, comprising:

[0007] The first box has a hollow interior forming a first chamber with an open bottom;

[0008] The second box has a hollow interior forming a second chamber with an air inlet on the front side. The second box can be inserted into the first box and communicate with the first box. The second box and the first box have an extended state in which at least the lower part of the second box is located under the first box through an open opening and the air inlet communicates with the outside and the second chamber, and a retracted state in which the second box is retracted upward relative to the first box.

[0009] A smoke baffle is provided on the front side of the air inlet, which can be moved up and down;

[0010] Its characteristic is that it also includes:

[0011] The power component and the transmission mechanism connected to the output end of the power component are used to drive the second housing and the smoke baffle to move. When the second housing moves to the retracted state, the smoke baffle is located at a first position on the upper side of the opening of the first housing. When the second housing moves to the extended state, the smoke baffle is located at a second position on the upper side of the air inlet of the second housing. The second position is located below the first position, and the distance between the second position and the first position is greater than the distance between the extended state and the retracted state of the second housing.

[0012] This invention uses a power component to drive the second housing and the smoke baffle to move up and down at different lifting strokes, facilitating control and operation. When the second housing is in the retracted state and the smoke baffle is in the first position, the opening of the first housing is below the smoke baffle and closer to the stovetop. The second housing can then move downwards with a smaller stroke to reach the extended state, even closer to the stovetop, thus improving the fume extraction effect within a limited lifting stroke. Simultaneously, in the retracted state, the second housing is concealed within the first housing, and the smoke baffle is located above the opening of the first housing, achieving a concealed effect when the range hood is not in operation.

[0013] The power unit and transmission mechanism can drive the second housing and the smoke baffle to move at different speeds, so that the lifting strokes of the two are different.

[0014] Preferably, the power component and the transmission mechanism connected to the output end of the power component are arranged to first drive the second housing in the retracted state and the smoke baffle in the first position to move downward synchronously until the second housing is in the extended state and the smoke baffle is in the middle position below the first position, and then continue to drive the smoke baffle to move downward to the second position, while the second housing remains in the extended state.

[0015] Preferably, the transmission mechanism includes:

[0016] A vertically arranged movable plate connected to the second housing is installed in the first housing and can move up and down. The movable plate is provided with a vertically extending sliding groove for a slider connected to the smoke baffle to be inserted therein.

[0017] An elastic element acts on the slider so that the slider always tends to move upward to the upper end of the groove;

[0018] Meanwhile, the first box is provided with a limiting block to restrict the movable plate from moving further downward, and the movable plate is provided with a limiting part that cooperates with the limiting block;

[0019] When the smoke baffle is in the first position, the slider on the smoke baffle is located at the upper end of the slide groove to support the movable plate. The limiting part of the movable plate is located above the limiting block and the two are arranged at intervals.

[0020] When the smoke baffle is in the middle position, the slider on the smoke baffle is located at the upper end of the slide groove, and the limiting part of the movable plate is supported on the limiting block;

[0021] When the smoke baffle is in the second position, the slider on the smoke baffle overcomes the elastic force of the elastic element and is located at the lower end of the slide groove, and the limiting part of the movable plate is supported on the limiting block.

[0022] The aforementioned elastic element design restricts the upward movement of the second housing when the user performs actions such as wiping or pressing upwards, thereby improving product compactness and user experience.

[0023] The aforementioned elastic element can be a spring, tension spring, etc.

[0024] Preferably, the elastic element is a compression spring extending vertically, with its upper end supported on the slider and its lower end supported on the protrusion of the movable plate.

[0025] Preferably, the limiting block is located beside the movable plate, and the upper part of the movable plate is provided with a lug as the aforementioned limiting part.

[0026] Furthermore, the smoke baffle is located outside the first housing, and the front side wall of the first housing has a vertically extending strip-shaped hole for the slider on the smoke baffle to pass through. The design of the strip-shaped hole also limits the vertical movement direction of the smoke baffle and the slider.

[0027] Preferably, the power component is a motor, and the transmission mechanism further includes a lead screw and nut component. The lead screw of the lead screw and nut component is vertically arranged and can rotate around its own central axis under the drive of the motor. The nut of the lead screw and nut component is threadedly connected to the outer circumference of the lead screw and is connected to the smoke baffle.

[0028] In the above embodiments, preferably, the range hood is installed in a cabinet above the stove. The depth of the lower part of the first housing in the front-to-back direction is less than its length in the left-to-right direction and also less than its width in the top-to-bottom direction, so that the lower part of the first housing is flat. The lower part of the first housing is located at the lower rear side of the cabinet. The smoke baffle at the first position is located inside the cabinet, and the smoke baffle at the second position is located below the cabinet.

[0029] Furthermore, the smoke baffle extends forward relative to the front sidewall of the lower part of the first housing, and the upper surface of the smoke baffle is a shelf for placing kitchen utensils.

[0030] Compared with existing technologies, the advantages of this invention are as follows: This invention uses a power component to drive the second housing and the smoke baffle to move up and down with different lifting strokes, facilitating control and operation. Furthermore, when the second housing is in the retracted state and the smoke baffle is in the first position, the opening of the first housing is below the smoke baffle and closer to the stovetop. The second housing can then move downwards with a smaller stroke to reach the extended state, even closer to the stovetop, thus improving the smoke extraction effect within a limited lifting stroke. Simultaneously, in the retracted state, the second housing is concealed within the first housing, and the smoke baffle is located above the opening of the first housing, achieving a concealed effect when the range hood is not in operation. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the range hood installed in the cabinet according to an embodiment of the present utility model (the second box is in the closed state, and the smoke baffle is in the first position);

[0032] Figure 2 for Figure 1 A longitudinal sectional view of a local structure (the section is a vertical plane extending from front to back);

[0033] Figure 3 for Figure 1 Another longitudinal sectional view of the local structure (the section is a vertical plane extending from front to back);

[0034] Figure 4 for Figure 1 A sectional view of a partial structure (the section is a vertical plane extending to the left and right);

[0035] Figure 5 This is a schematic diagram of the structure of the range hood installed in the cabinet according to an embodiment of the present utility model (the second housing is in the extended state, and the smoke baffle is in the second position);

[0036] Figure 6 for Figure 5 A longitudinal sectional view of a local structure (the section is a vertical plane extending from front to back). Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0038] like Figures 1-6 As shown, this is a preferred embodiment of a range hood according to the present invention. The range hood is used in a cabinet 7 above the stove and includes a first housing 1, a second housing 2, a smoke baffle 3, a power component 4, a transmission mechanism 5, and a fan system 6.

[0039] The first housing 1 is hollow inside, forming a first chamber 10 with an opening 11 at the bottom, and the top of the first chamber 10 is provided with an oil fume outlet. A fan system 6, which is a conventional centrifugal fan, is installed in the upper part of the first housing 1 to draw oil fumes from the kitchen into the first housing 1 and discharge them from the oil fume outlet. In this embodiment, the upper part of the first housing 1 is placed inside the cabinet 7. The lower part of the first housing 1 has a depth in the front-to-back direction that is less than its length in the left-to-right direction and also less than its width in the vertical direction, making the lower part of the first housing 1 generally flat. The lower part of the first housing 1 is located below and behind the cabinet 7.

[0040] The interior of the second housing 2 is hollow, forming a second chamber 20 with an air inlet 21 on the front side. The second housing 2 can be inserted into the first housing 1 and communicate with the first housing 1. The second housing 2 and the first housing 1 are in an extended state where at least the lower part of the second housing 2 is located under the first housing 1 through an opening 11, and the air inlet 21 communicates with the outside and the second chamber 20. The second housing 2 is also in a retracted state where it is closed upward relative to the first housing 1.

[0041] The smoke baffle 3 is movable up and down and is located on the front side of the air inlet 21 and outside the first housing 1. The smoke baffle 3 extends forward relative to the front side wall of the lower part of the first housing 1, and the upper surface of the smoke baffle 3 is a shelf 32 for placing kitchen utensils.

[0042] The power unit 4 and the transmission mechanism 5 connected to the output end of the power unit 4 are used to drive the second housing 2 and the smoke baffle 3 to move. When the second housing 2 moves to the retracted state, the smoke baffle 3 is located at a first position above the opening 11 of the first housing 1. When the second housing 2 moves to the extended state, the smoke baffle 3 is located at a second position above the air inlet 21 of the second housing 2. The second position is located below the first position, and the distance between the second position and the first position is greater than the distance between the extended state and the retracted state of the second housing 2. In this embodiment, the power unit 4 and the transmission mechanism 5 connected to the output end of the power unit 4 are arranged to first drive the retracted second housing 2 and the smoke baffle 3 at the first position to move downward synchronously until the second housing 2 is in the extended state and the smoke baffle 3 is in the middle position below the first position. Then, the smoke baffle 3 is driven to move downward to the second position, and the second housing 2 remains in the extended state.

[0043] Specifically, the power component 4 is a motor, and the transmission mechanism 5 includes a movable plate 51, an elastic component 52, and a lead screw and nut assembly. The lead screw 53 of the lead screw and nut assembly is vertically arranged and can rotate around its own central axis under the drive of the motor. The nut 54 of the lead screw and nut assembly is threadedly connected to the outer circumference of the lead screw 53 and connected to the smoke baffle 3, which is used to drive the smoke baffle 3 to move up and down. Under the drive of the power component 4 and the lead screw and nut assembly, the smoke baffle 3 can move sequentially to a first position, a middle position, and a second position. The middle position is located below the first position, and the second position is located below the middle position.

[0044] The movable plate 51 is vertically arranged and movable within the first housing 1. The lower end of the movable plate 51 is connected to the second housing 2. The upper part of the movable plate 51 has a vertically extending groove 510 for the slider 31, which is connected to the smoke baffle 3, to be inserted into. The elastic element 52 is a vertically extending compression spring, with its upper end supported by the slider 31 and its lower end supported by a protrusion on the movable plate 51, so that the slider 31 always tends to move upwards to the upper end of the groove 510. Simultaneously, the first housing 1 has a limiting block 13 to restrict further downward movement of the movable plate 51. The limiting block 13 is located beside the movable plate 51, and the upper end of the movable plate 51 has a lug as a limiting part 511 that cooperates with the limiting block 13.

[0045] like Figure 3 As shown, when the smoke baffle 3 is in the first position, the slider 31 on the smoke baffle 3 is located at the upper end of the slide groove 510 to support the movable plate 51. The limiting part 511 of the movable plate 51 is located above the limiting block 13 and the two are arranged at intervals. At this time, the smoke baffle is located inside the cabinet 7.

[0046] When the smoke baffle 3 is in the middle position, the slider 31 on the smoke baffle 3 is located at the upper end of the slide groove 510, and the limiting part 511 of the movable plate 51 is supported on the limiting block 13.

[0047] like Figure 6 As shown, when the smoke baffle 3 is in the second position, the slider 31 on the smoke baffle 3 overcomes the elastic force of the elastic member 52 and is located at the lower end of the slide groove 510, and the limiting part 511 of the movable plate 51 is supported on the limiting block 13. At this time, the smoke baffle 3 is located below the cabinet 7, corresponding to the position of the bottom opening 11 of the first cabinet.

[0048] In this embodiment, the front side wall of the first housing 1 is provided with a vertically extending strip hole 12 for the slider 31 on the smoke baffle 3 to pass through.

[0049] In this embodiment, the movable plate 51 and the elastic element 52 that cooperate are grouped together, and there are two groups, arranged one on the left and one on the right. Correspondingly, there are also two sliders 31 on the smoke baffle, which are set to correspond to the movable plate 51 in each group.

[0050] In this embodiment, when the range hood is installed inside the cabinet, the bottom of the first housing is 480mm from the cooktop. When in use, the air inlet 21 located under the baffle plate in the extended state has a vertical width of 115-125mm. At this time, the baffle plate is positioned at the bottom opening of the first housing 1, resulting in good smoke extraction and preventing burns during cooking. When the range hood is not in use, the baffle plate 3 rises 270mm, with its lower surface flush with the bottom surface of the cabinet. The second housing 2 rises 160mm, with its bottom surface flush with the edge of the bottom opening of the first housing 1, maintaining a neat and aesthetically pleasing appearance.

[0051] The process of turning on the range hood:

[0052] 1. The smoke baffle 3 and the second housing 2 descend in a stroke of 0-160mm: Driven by the power component 4 and the transmission mechanism 5, the smoke baffle 3 and the second housing 2 move downward synchronously. During this process, due to the existence of gravity and the elastic force of the elastic component, the slider 31 connected to the smoke baffle 3 is always located in the upper end of the slide groove 510 of the movable plate 51 until the limiting part 511 on the movable plate 51 moves downward to the position of the limiting block 13 of the first housing 1. At this time, the second housing 3 descends to the correct position.

[0053] 2. When the smoke baffle 3 descends to a stroke of 160-270mm: Since the limit block 13 prevents the movable plate 5 from continuing to move downward, when the power component 4 continues to operate, the second box 2 connected to the movable plate remains stationary. The slider 31 connected to the smoke baffle 3 overcomes the elastic force of the elastic component 52 and moves downward along the slide groove 510 until the slider 31 moves to the lower end of the slide groove 510. At this time, the smoke baffle descends to the correct position.

[0054] The process of turning off the range hood:

[0055] 1. Smoke baffle rising stroke 0-110mm: When the drive motor just starts running, the second housing 2 remains stationary, and the smoke baffle moves upward until the slider 3 connected to the smoke baffle moves from the lower end of the slide groove 510 to the upper end of the slide groove 510.

[0056] 2. After the smoke baffle 3 and the second housing 2 continue to rise for another 160mm, the drive motor continues to run, the slider 31 on the smoke baffle is always in contact with the upper end of the slide groove 510, and moves upward together with the second housing 2 until the smoke baffle and the second housing move into place together.

[0057] 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.

[0058] The term "vertical" is also used in the specification and claims of this utility model, meaning basically along the up and down direction, and is not limited to just the vertical direction, but can also be slightly deviated from the vertical direction.

Claims

1. A range hood, comprising: The first box (1) has a hollow interior forming a first chamber (10) with an opening (11) at the bottom; The second box (2) is hollow inside to form a second chamber (20) with an air inlet (21) on the front side. The second box (2) is inserted into the first box (1) and connected to the first box (1) in a way that allows it to move up and down. The second box (2) and the first box (1) are in an extended state where at least the lower part of the second box (2) is located below the first box (1) through an opening (11) and the air inlet (21) connects to the outside and the second chamber (20). The second box (2) is also in a retracted state where it is retracted upward relative to the first box (1). A smoke baffle (3) is provided on the front side of the air inlet (21) and can be moved up and down; Its features It also includes: The power component (4) and the transmission mechanism (5) connected to the output end of the power component (4) are used to drive the second box (2) and the smoke baffle (3) to move. When the second box (2) moves to the closed state, the smoke baffle (3) is located at the first position above the opening (11) of the first box (1). When the second box (2) moves to the extended state, the smoke baffle (3) is located at the second position above the air inlet (21) of the second box (2). The second position is located below the first position, and the distance between the second position and the first position is greater than the distance between the extended state and the closed state of the second box (2).

2. The range hood according to claim 1, characterized in that: The power component (4) and the transmission mechanism (5) connected to the output end of the power component (4) are arranged to first drive the second housing (2) in the retracted state and the smoke baffle (3) in the first position to move downward synchronously until the second housing (2) is in the extended state and the smoke baffle (3) is in the middle position below the first position. Then, the smoke baffle (3) is driven to move downward to the second position, and the second housing (2) remains in the extended state.

3. The range hood according to claim 2, characterized in that: The transmission mechanism (5) includes: A vertically arranged movable plate (51) connected to the second box (2) is installed in the first box (1) and can move up and down. The movable plate (51) is provided with a vertically extending slide groove (510) for the slider (31) connected to the smoke baffle (3) to be inserted therein. An elastic element (52) acts on the slider (31) so that the slider (31) always tends to move upward to the upper end of the groove (510); Meanwhile, the first box (1) is provided with a limiting block (13) for restricting the movable plate (51) from moving further downward, and the movable plate (51) is provided with a limiting part (511) that cooperates with the limiting block (13); When the smoke baffle (3) is in the first position, the slider (31) on the smoke baffle (3) is located at the upper end of the slide groove (510) to support the movable plate (51). The limiting part (511) of the movable plate (51) is located above the limiting block (13) and the two are arranged at intervals. When the smoke baffle (3) is in the middle position, the slider (31) on the smoke baffle (3) is located at the upper end of the slide groove (510), and the limiting part (511) of the movable plate (51) is supported on the limiting block (13); When the smoke baffle (3) is in the second position, the slider (31) on the smoke baffle (3) overcomes the elastic force of the elastic element (52) and is located at the lower end of the slide groove (510), and the limiting part (511) of the movable plate (51) is supported on the limiting block (13).

4. The range hood according to claim 3, characterized in that: The elastic element (52) is a compression spring that extends vertically, with its upper end supported on the slider (31) and its lower end supported on the protrusion of the movable plate (51).

5. The range hood according to claim 3, characterized in that: The limiting block (13) is located on the side of the movable plate (51), and the upper part of the movable plate (51) is provided with a lug as the aforementioned limiting part (511).

6. The range hood according to claim 3, characterized in that: The smoke baffle (3) is located outside the first box (1), and the front side wall of the first box (1) is provided with a vertically extending strip hole (12) for the slider (31) on the smoke baffle (3) to pass through.

7. The range hood according to claim 3, characterized in that: The power component (4) is a motor, and the transmission mechanism (5) also includes a lead screw and nut component. The lead screw (53) of the lead screw and nut component is vertically arranged and can rotate around its own central axis under the drive of the motor. The nut (54) of the lead screw and nut component is threadedly connected to the outer circumference of the lead screw (53) and connected to the smoke baffle (3).

8. The range hood according to any one of claims 1 to 6, characterized in that: The range hood is installed in the cabinet (7) above the stove. The depth of the lower part of the first box (1) in the front-to-back direction is less than its length in the left-to-right direction and also less than its width in the up-down direction, so that the lower part of the first box (1) is flat. The lower part of the first box (1) is located at the lower rear side of the cabinet (7). The smoke baffle (3) at the first position is located inside the cabinet (7), and the smoke baffle (3) at the second position is located below the cabinet (7).

9. The range hood according to claim 8, characterized in that: The smoke baffle (3) extends forward relative to the front side wall of the lower part of the first box (1), and the upper surface of the smoke baffle (3) is a storage surface (32) for placing kitchen utensils.

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