CN209991514U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood, the casing of air intake has been put to the range hood, the range hood still includes: the power mechanism can drive the baffle of the baffle opening and closing mechanism to slide, and drive the baffle to firstly turn over for a preset angle or firstly move for a preset distance in the direction far away from the air inlet and then continuously slide along the direction for opening the air inlet. The utility model provides a baffle mechanism that opens and shuts of lampblack absorber has changed the motion mode that the whole single opening and shutting of current baffle, can guarantee that the baffle does not take place under the prerequisite of interference with other parts, reliability and stability when improving the baffle operation.

Description

Fume exhaust fan

Technical Field

The utility model relates to a smoke exhaust ventilator technical field, in particular to lampblack absorber.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern homes. The range hood has the main function of sucking and removing oil smoke during cooking, so that a good environment of a kitchen is maintained. Wherein, in order to improve the planarization of lampblack absorber outward appearance and aesthetic property, the lampblack absorber can be provided with the baffle that can open and shut automatically. When the user closes the range hood, the baffle is closed, and a dirty oil net can be hidden; when the user starts the range hood, the baffle is automatically opened to expose the oil screen and the air inlet.

For the existing range hood, the baffle plate is a whole plate facing a user, and the existing baffle plate is mainly completed in a mode of single integral opening and closing movement. The integral single opening and closing movement mode is generally an integral overturning mode or an integral plane sliding mode. However, the existing baffle plate integrally moves in a single opening and closing mode and has a series of defects.

For example, in the case of a side-suction range hood, if the baffle adopts an integral single opening and closing motion mode, the existing baffle has a large area (usually the whole front panel facing the user), which results in a large load. A large load will tend to place a high demand on the performance of the power mechanism driving the baffle. In addition, the baffle with a large area is driven by a power mechanism, and the moving stability and reliability of the baffle are difficult to guarantee.

As shown in fig. 1, for example, for a top-side double-suction range hood, an air inlet is partially formed in a side casing of the top-side double-suction range hood, and a baffle capable of automatically opening and closing may be arranged only for the air inlet. However, if the baffle plate provided for the air inlet is moved in a conventional integral single opening and closing manner, such as a planar sliding manner, the baffle plate is likely to interfere with the upper side casing.

It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions of the present application and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present application.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a range hood, this baffle mechanism that opens and shuts have changed the whole single motion mode of opening and shutting of current baffle, can guarantee that the baffle does not take place under the prerequisite of interfering with other parts, reliability and stability when improving the baffle operation.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a range hood, is including the casing that is provided with the air intake, the range hood still includes: the power mechanism can drive the baffle of the baffle opening and closing mechanism to slide, and drive the baffle to firstly turn over for a preset angle or firstly move for a preset distance in the direction far away from the air inlet and then continuously slide along the direction for opening the air inlet.

Further, the housing includes a side housing portion, and the intake vent and the damper opening and closing mechanism are disposed in the side housing portion.

Furthermore, the air inlet comprises a left air inlet and a right air inlet, and the baffle opening and closing mechanism is used for opening and closing the left air inlet and the right air inlet.

Further, the baffle mechanism that opens and shuts includes: the sliding rails are arranged on two sides of the air inlet; the sliding support assembly is matched with the sliding rail and the baffle and is connected with the power mechanism, and the power mechanism can drive the sliding support assembly to slide in the sliding rail.

Further, the slide rail includes a first slide rail section and a second slide rail section from bottom to top, the first slide rail section is disposed in an inclined manner compared with the second slide rail section, and the slide rail includes any one of the following: double-slide rail structure, single-slide rail structure.

Further, the baffle mechanism that opens and shuts includes: the first baffle opening and closing mechanism and the second baffle opening and closing mechanism are correspondingly arranged at the left air inlet and the right air inlet.

Further, the slide rail is two slide rail structures, two slide rail structures include: the first slide rail is relatively close to the baffle plate, and the second slide rail is relatively far away from the baffle plate.

Further, the slope of the first slide rail section of the first slide rail is smaller than the slope of the first slide rail section of the second slide rail.

Furthermore, the side shell part also comprises a condensation plate arranged on the upper part of the air inlet, when the baffle opening and closing mechanism is in an opening state, the baffle is at least partially overlapped with the condensation plate, and when the baffle opening and closing mechanism is in a closing state, the baffle is coplanar with the condensation plate.

Further, an oil cup is arranged at the bottom of the side shell part, and when the baffle opening and closing mechanism is in a closed state, the lower end of the baffle is positioned on the inner side of the oil cup.

Further, the housing further includes a top housing portion disposed at an upper portion of the side housing portion.

Furthermore, the top shell part is provided with an air suction opening, and the air suction opening comprises long circular air suction holes which are arranged in an array mode.

Furthermore, one end of the power mechanism, which is close to the sliding support component, is provided with a long groove; the sliding support component is provided with a plate-shaped body, a first sliding rail bearing rolling in the first sliding rail and a second sliding rail bearing rolling in the second sliding rail are connected to the body, and the body is further provided with a connecting pin which is clamped into the long groove and can move in the long groove.

Further, the power mechanism comprises: a gear, a rack and a driving source; one end of the rack close to the sliding support component is provided with the long groove, and the extending direction of the long groove is perpendicular to the lengthwise extending direction of the rack.

Furthermore, a spacing part is arranged between the first slide rail and the second slide rail, and a positioning bearing capable of rolling on the spacing part is further connected to the body of the sliding support assembly.

Further, the slide rail is single slide rail structure, single slide rail structure includes: the connecting piece is connected with the baffle and is provided with a slide rail bearing clamped in the slide rail; when the slide rail bearing moves to the second slide rail section, the baffle is driven to continuously slide along the direction of opening the air inlet.

According to the technical scheme, the range hood with the novel baffle opening and closing mechanism is obvious, the baffle opening and closing mechanism changes the existing motion mode that the baffle is opened and closed in a single mode, and the baffle can be guaranteed not to interfere with other parts, so that the reliability and stability of the baffle during operation are improved. Especially for a top-side double-suction type range hood, under the condition that a condensation plate and an air inlet are distributed on a side shell part from top to bottom, the movement track of the baffle plate is controlled, so that the baffle plate moves to the outer side of the condensation plate through overturning a preset angle or deviating from the air inlet for a certain distance in space and then moves upwards to open the air inlet, and the whole movement process of the baffle plate is stable and reliable.

Furthermore, the air inlet of this lampblack absorber includes left air intake and right air intake, the baffle mechanism that opens and shuts is used for opening and closing left air intake with right air intake. When the left air inlet and the right air inlet can be independently controlled to be in an open-close state through the baffle opening-closing mechanism, a user only uses one side of the stove, and the corresponding air inlets can be independently opened through the baffle opening-closing mechanism. Because the negative pressure that the fan produced is certain, when can only open the air intake of one side, for the condition that the air intake of both sides is full open, be favorable to keeping of negative pressure and in effect be equivalent to the negative pressure stack with two air intakes and act on an air intake, be favorable to guaranteeing to produce bigger suction in this air intake department to can improve the clean rate of taking out of this lampblack absorber.

Drawings

Fig. 1 is a schematic structural diagram of a range hood provided in the prior art;

fig. 2 is a front view of a range hood provided in an embodiment of the present application with left and right air inlets fully opened;

FIG. 3 is a schematic diagram of a three-dimensional structure of the range hood provided in FIG. 2 with left and right air inlets fully opened;

FIG. 4 is a front view of a range hood provided by an embodiment of the present application with a right air inlet open;

FIG. 5 is a side view of a range hood provided by an embodiment of the present application;

fig. 6 is a schematic three-dimensional structure diagram of an opening and closing mechanism and a power mechanism of a range hood baffle according to an embodiment of the present application;

FIG. 7 is a schematic view of the shutter release mechanism of FIG. 6 in an open position;

FIG. 8 is a schematic structural view of the shutter opening and closing mechanism of FIG. 6 in a closed state;

fig. 9 is a partial schematic view of an opening and closing mechanism of a baffle plate of a range hood provided in an embodiment of the present application;

fig. 10 is a schematic structural diagram of a sliding rail in a range hood baffle opening and closing mechanism provided in an embodiment of the present application;

fig. 11 is a schematic structural diagram of a structure that an opening and closing mechanism of a range hood baffle provided by an embodiment of the application is matched with a rack.

Description of reference numerals:

1. a housing; 101. a left air inlet; 102. a right air inlet; 11. a top housing portion; 110. an air suction opening; 12. a side shell portion; 13. a condensing plate; 2. a baffle plate opening and closing mechanism; 20. a baffle plate; 201. a left baffle; 202. a right baffle; 21. a slide rail; 211. a first slide rail segment; 212. a second slide rail section; 21a, a first slide rail; 21b, a second slide rail; 22. a sliding support assembly; 220. a body; 221. a first slide rail bearing; 222. a second slide rail bearing; 223. a connecting pin; 31. a gear; 32. a rack; 321. a long groove; 33. positioning the bearing; 4. an oil cup.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments, it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention, and after reading the present invention, the modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the claims attached to the present application.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model provides a lampblack absorber with neotype baffle mechanism that opens and shuts, this baffle mechanism that opens and shuts has changed the whole single motion mode that opens and shuts of current baffle, can guarantee that the baffle does not take place under the prerequisite of interference with other parts, improves reliability and stability when the baffle moves.

Referring to fig. 2 to 6 in combination, a range hood provided in an embodiment of the present application may include: be provided with casing 1 of air intake, the lampblack absorber still includes: a power mechanism and a baffle plate opening and closing mechanism 2 with a baffle plate 20. The power mechanism can drive the baffle 20 of the baffle opening and closing mechanism 2 to slide, and drive the baffle 20 to firstly turn over for a preset angle or firstly move for a preset distance in the direction away from the air inlet, and then continue to slide along the direction of opening the air inlet.

The specific form of the range hood described in this specification may include any one of the following: side-draft range hoods, ceiling-draft range hoods, top-side double-suction range hoods and the like. In particular, the present application is not limited thereto. In the following, a top-side double-suction range hood is mainly used for detailed description, and other forms of range hoods can refer to the top-side double-suction range hood in an analogy manner, and the examples are not repeated here.

In the present embodiment, the range hood has a housing 1, the housing 1 is a hollow structure, and a fan for providing a suction force of oil smoke is generally disposed in the housing 1. This casing 1 has relative upper end and lower extreme, the lower extreme of casing 1 is provided with the air intake, the upper end of casing 1 is provided with the exhaust port. After the fan is started, oil smoke can enter the shell 1 from the air inlet and then is discharged through the smoke outlet.

In the present embodiment, the range hood is provided with a power mechanism and a baffle opening and closing mechanism 2 having a baffle 20. Wherein, the power mechanism provides power for the movement of the baffle 20 of the baffle opening and closing mechanism 2. Specifically, the power mechanism may include a motor or other types of driving sources, and necessary transmission mechanisms, etc., and the present application is not limited thereto.

The baffle plate opening and closing mechanism 2 is provided with a baffle plate 20, and the baffle plate 20 can move along a preset track under the driving of a power mechanism.

In some embodiments, the movement of the baffle 20 may be: the air inlet is turned over by a preset angle and then slides along the direction of opening the air inlet.

Wherein, the baffle 20 is firstly turned over by a predetermined angle to ensure that the baffle 20 will not interfere with other parts of the housing 1 when opened. For example, in the case of a top-side double suction type range hood, a side casing part 12 and a top casing part 11 are provided from top to bottom, wherein the intake opening and shutter opening and closing mechanism 2 is provided to the side casing part 12. In particular, the air inlet is arranged on the underside of the side housing part 12. The upper side of the side casing part 12, i.e. the upper part of said air intake, is provided with a condensation plate 13. Generally, in order to ensure the flatness and the aesthetic property of the whole range hood, the condensation plate 13 is coplanar with the baffle plate 20 when the range hood is in a closed state. The lower edge of the condensation plate 13 and the upper edge of the baffle 20 may be spaced apart by a small gap in consideration of workability in actual installation and fitting. For example around 3 mm.

When the baffle 20 is first turned over by a predetermined angle, the baffle 20 is spatially located outside the condensation plate 13 without interfering with the condensation plate 13. During the specific use baffle mechanism 2 that opens and shuts is in under the condition of the open mode, baffle 20 with condensation plate 13 at least part superpose baffle mechanism 2 that opens and shuts is in under the condition of the closed mode, baffle 20 with condensation plate 13 coplane can guarantee the holistic aesthetic property of this lampblack absorber, also can guarantee the reliability of the mechanism 2 operation that opens and shuts of baffle when this lampblack absorber uses.

In one embodiment, the shutter opening and closing mechanism 2 may include: and the sliding rail 21 is matched with the sliding support component 22 arranged on the sliding rail 21 and the baffle 20. The slide rail 21 may be disposed on both sides of the air inlet. The sliding support assembly 22 is connected with the power mechanism, and the power mechanism can drive the sliding support assembly 22 to slide in the slide rail 21 to drive the baffle 20 to move.

Specifically, the baffle opening and closing mechanism 2 may be provided with a slide rail 21 for controlling a motion track of the baffle 20, and a size of the predetermined angle for turning over the baffle 20 may be determined according to a specific setting of the slide rail 21, which is not specifically limited herein. Some embodiments provided in this specification, because the mode of first turning over and then sliding is adopted, compared with the existing mode of integral sliding, the problem of interference between the baffle 20 and the housing 1 is well solved; the angle at which the baffle 20 is inverted relative to the conventional integral inversion method is also smaller than the angle at which the baffle 20 is inverted as a whole. The predetermined angle of the flap 20 can be determined by combining the factors of the size of the housing 1, the specific arrangement form of the slide rail 21, and the like, and the application is not limited in this respect.

In other embodiments, the movement of the baffle 20 may be: and after the air inlet is moved for a preset distance in the direction away from the air inlet, the air inlet is continuously opened and slides.

The baffle 20 is moved a predetermined distance away from the inlet to ensure that the baffle 20 does not interfere with other parts of the housing 1 when opened. Specifically, after the baffle 20 is moved a predetermined distance in a direction away from the inlet opening, the baffle 20 is located spatially (along the z-direction) outside the condensation plate 13. The baffle 20 continues to slide in the direction of opening the air inlet without interfering with the upper condensation plate 13.

The baffle 20 slides along the direction of opening the air inlet, and can slide along a plane parallel to the plane of the air inlet. For example, the sliding motion may be upward (in the y-direction) along a plane parallel to the plane of the air inlet. Overall, when the barrier 20 moves along the slide rail 21, the moving path of the barrier 20 is mainly based on the setting path of the slide rail 21.

Technical effects

The utility model provides a lampblack absorber with novel baffle mechanism 2 that opens and shuts is provided in this application embodiment, this baffle mechanism 2 that opens and shuts has changed the whole single motion mode that opens and shuts of current baffle 20, can guarantee that baffle 20 does not take place under the prerequisite of interfering with other parts, reliability and stability when improving baffle 20 operation. Especially for a top-side double-suction type range hood, under the condition that the side shell part 12 is provided with the condensing plate 13 and the air inlet from top to bottom, the movement track of the baffle plate 20 is controlled, so that the baffle plate 20 moves to the outer side of the condensing plate 13 by turning a preset angle or deviating from the air inlet for a certain distance in space when moving, and then moves upwards to open the air inlet, and the whole movement process of the baffle plate 20 is stable and reliable.

In one embodiment, for a housing 1 with a side casing part 12, an oil cup 4 is provided at the bottom of the side casing part 12. When the baffle opening and closing mechanism 2 is in a closed state, the lower end of the baffle 20 is positioned at the inner side of the oil cup 4.

In the use process of the range hood, oil stains inevitably exist on the baffle plate 20 along with the increase of the use time. Under the condition that the baffle mechanism 2 that opens and shuts from the closed state, can block into this oil cup 4 through the lower extreme of this baffle 20 in, can guarantee that the greasy dirt on the baffle 20 is in automatic collection gets into oil cup 4 under the action of gravity, avoids direct outside drippage to pollute the cooking utensils mesa.

In one embodiment, the air inlet may include: a left intake vent 101 and a right intake vent 102. The baffle opening and closing mechanism 2 is used for opening and closing the left air inlet 101 and the right air inlet 102.

Specifically, the left air inlet 101 may be provided with a left baffle 201, and the right air inlet 102 is provided with a right baffle 202. The left air inlet 101 and the right air inlet 102 can control the opening and closing state of the corresponding baffle through the baffle opening and closing mechanism 2 to realize the opening and closing of the air inlets.

In this embodiment, when the left air inlet 101 and the right air inlet 102 can be controlled to be opened or closed individually by the baffle opening/closing mechanism 2, the user can use only one side of the cooker, and the corresponding air inlet can be opened individually by the baffle opening/closing mechanism 2. For example, when a user opens the left cooker alone, only the left air inlet 101 may be opened through the baffle opening and closing mechanism 2; likewise, in the case that the user opens only the right cooker, only the right air inlet 102 can be opened by the baffle opening and closing mechanism 2. Because the negative pressure that the fan produced is certain, when can only open the air intake of one side, for the condition that the air intake of both sides is full open, be favorable to keeping of negative pressure and in effect be equivalent to the negative pressure stack with two air intakes and act on an air intake, be favorable to guaranteeing to produce bigger suction in this air intake department to can improve the clean rate of taking out of this lampblack absorber.

In a specific application scenario, especially for a top-side double suction range hood, it is generally provided with an air suction opening 110 in the top housing part 11. Wherein, the air inlet 110 may include oblong air suction holes arranged in an array. The air inlet 110 is closer to the fan than the air inlet on the side shell part 12, and can weaken the negative pressure at the air inlet on the side shell part 12 to some extent, so how to ensure that a larger suction force can be generated at the air inlet on the side shell part 12 is a problem to be solved urgently for the top-side double-suction range hood. The baffle plate opening and closing mechanism 2 capable of controlling the opening and closing of the air inlet on one side can concentrate negative pressure acting on the left air inlet 101 and the right air inlet 102 on the opened air inlet, so that the air inlet can generate large suction force.

In the case where the inlet has a left inlet 101 and a right inlet 102, the shutter opening and closing mechanism 2 may include: a first baffle plate opening and closing mechanism 2 and a second baffle plate opening and closing mechanism 2. The first baffle opening and closing mechanism 2 and the second baffle opening and closing mechanism 2 are correspondingly arranged at the left air inlet 101 and the right air inlet 102. The first baffle opening and closing mechanism 2 may be configured to control an opening and closing state of the left air inlet 101, and the second baffle opening and closing mechanism 2 may be configured to control an opening and closing state of the right air inlet 102.

The first shutter opening and closing mechanism 2 and the second shutter opening and closing mechanism 2 may be the same mechanism. Referring to fig. 6 to 8, the first shutter opening and closing mechanism 2 or the second shutter 20 may include: a slide rail 21 and a slide support assembly 22 which is matched with the slide rail 21 and the baffle 20. The slide rails 21 are disposed at both sides of the air inlet. The sliding support assembly 22 is connected with the power mechanism, and the power mechanism can drive the sliding support assembly 22 to slide in the sliding rail 21.

Referring to fig. 9 and 10, the slide rail 21 may include a first slide rail section 211 and a second slide rail section 212 from bottom to top. The first track segment 211 is disposed to be inclined with respect to the second track segment 212. The slide rail 21 includes any one of the following: a double slide rail 21 structure and a single slide rail 21 structure.

In the present embodiment, the slide rail 21 may have two slide rail 21 segments with different slopes, namely a first slide rail segment 211 and a second slide rail segment 212. The first sliding rail segment 211 can be an initial segment of the sliding rail 21. For a single shutter opening and closing mechanism 2, it may be provided with a set of sliding rails 21 distributed in parallel. The set of slide rails 21 may include two slide rails 21, and the distance between the two slide rails 21 matches the length of the baffle 20. The length of the baffle 20 is the dimension along the x-axis. Wherein, for each slide rail 21 on a single side, it may have one slide rail 21, i.e. a single slide rail 21 structure; it is also possible to have two slide rails 21, i.e. a double slide rail 21 mechanism. The structure of the slide rail 21 will be described in detail below with reference to the accompanying drawings.

In one embodiment, the slide rail 21 may be a dual slide rail 21 structure, and the dual slide rail 21 structure may include: a first slide rail 21a relatively close to the barrier 20 and a second slide rail 21b relatively far from the barrier 20. The second rail sections 212 of the first rail 21a and the second rail 21b may be parallel to each other. The first track segments 211 of the first track 21a and the second track 21b may be parallel or non-parallel to each other.

In a specific embodiment, the slope of the first slide rail segment 211 of the first slide rail 21a is smaller than the slope of the first slide rail segment 211 of the second slide rail 21 b.

In this embodiment, when the slope of the first sliding track section 211 of the first sliding track 21a is smaller than the slope of the first sliding track section 211 of the second sliding track 21b, the baffle 20 is driven by the sliding support component 22 to ensure that the sliding support component 22 can be controlled to turn over by a smaller angle when the first sliding track section 211 moves, i.e. the baffle 20 and the condensing plate 13 can be misaligned.

Referring to fig. 11, in detail, an elongated slot 321 is disposed at one end of the power mechanism close to the sliding support component 22; the slot 321 is used to cooperate with the sliding support component 22 to realize the turning motion of the baffle plate 20. Specifically, the transmission mechanism of the power mechanism may be a transmission mechanism in which the gear 31 is engaged with the rack 32. The power mechanism may include: a gear 31, a rack 32 and a drive source. One end of the rack 32 close to the sliding support component 22 is provided with the long groove 321, and the extending direction of the long groove 321 is perpendicular to the lengthwise extending direction of the rack 32.

The sliding support assembly 22 has a plate-shaped body 220, the plate-shaped body 220 is connected to a first slide rail bearing 221 rolling in the first slide rail 21a and a second slide rail bearing 222 rolling in the second slide rail 21b, and the body 220 is further provided with a connecting pin 223 which is inserted into the elongated slot 321 and can move in the elongated slot 321.

When the range hood is started, the driving source of the baffle plate opening and closing mechanism 2 drives the gear 31 to drive the rack 32 to move. With the movement of the rack 32, the first slide rail 21a of the sliding support component 22 moves along the first slide rail section 211 of the first slide rail 21a, the second slide rail 21b moves along the first slide rail section 211 of the second slide rail 21b, and the connecting pin 223 moves in the elongated slot 321, which cooperate to control the movement track of the baffle 20 connected to the sliding support component 22, so that the baffle 20 is turned a smaller angle around the long side of the baffle 20, and is misaligned with the condensing plate 13.

In the present embodiment, the magnitude of the slope of the first slide segment 211 can be represented by the acute angle formed between the first slide segment 211 and the second slide segment 212. Wherein the second slide rail sections 212 of the first slide rail 21a and the second slide rail 21b can be parallel to each other. The second slide rail segment 212 may be used as a reference for comparison. For example, the acute angle between the first slide rail section 211 and the second slide rail section 212 of the first slide rail 21a is 16 degrees, and the acute angle between the first slide rail section 211 and the second slide rail section 212 of the second slide rail 21b is 26 degrees. When the slide support assembly 22 moves the shutter 20 along the first slide rail segment 211, the body 220 and the shutter 20 have a small angle of turnover. Specifically, the angle of the flip is generally less than 10 degrees. Because the power provided by the power mechanism is mainly along the y direction, the smaller the component in the z direction is, the smaller the resistance is, and when the baffle 20 can be dislocated with the condensation plate 13 through small-angle overturning, the load of the power mechanism can be reduced.

Further, in order to ensure the smoothness and reliability of the movement of the baffle 20, a spacing portion is provided between the first slide rail 21a and the second slide rail 21b, and the body 220 of the sliding support assembly 22 is further connected with a positioning bearing 33 capable of rolling on the spacing portion. The spacer may be a plane formed between the two recessed first slide rails 21a and the second slide rails 21 b.

In other embodiments, the slide rail 21 may be a single slide rail structure. When the slide rail 21 is a single slide rail structure, the single slide rail structure may include: the connecting piece is connected with the baffle 20, and a slide rail bearing clamped in the slide rail 21 is arranged on the connecting piece; when the slide rail bearing moves to the first slide rail section 211, the baffle 20 is driven to move a predetermined distance in a direction away from the air inlet, and when the slide rail bearing 21 moves to the second slide rail section 212, the baffle 20 is driven to continue to slide in a direction of opening the air inlet.

In this embodiment, the first slide rail section 211 and the second slide rail section 212 may be perpendicular to each other, and in order to ensure that the slide rail 21 bearing can smoothly enter the second slide rail section 212 from the first slide rail section 211 under the driving of the power mechanism, the barrier opening and closing mechanism 2 may further be provided with a landslide guide. In particular, the landslide guide may be provided with a ramp surface. The slide rail 21 bearing can move along the slope of the slide guide from bottom to top while the first slide rail section 211 moves, and the height of the slide rail 21 bearing moving on the slope is equal to the length of the first slide rail section 211, so that the slide rail 21 bearing can smoothly transit from the first slide rail section 211 to the second slide rail section 212.

Any numerical value recited herein includes all values from the lower value to the upper value that are incremented by one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.

Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.

All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.

A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.

The above embodiments in the present specification are all described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment is described with emphasis on being different from other embodiments.

The above description is only a few embodiments of the present invention, and although the embodiments of the present invention are disclosed as above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (16)

1. The utility model provides a range hood, is including the casing that is provided with the air intake, its characterized in that: the range hood further includes: the power mechanism can drive the baffle of the baffle opening and closing mechanism to slide, and drive the baffle to firstly turn over for a preset angle or firstly move for a preset distance in the direction far away from the air inlet and then continuously slide along the direction for opening the air inlet.

2. A range hood as set forth in claim 1 wherein said housing includes a side housing portion, said air intake and said baffle opening and closing mechanism being disposed in said side housing portion.

3. The range hood according to claim 1 or 2, wherein the air inlet comprises a left air inlet and a right air inlet, and the baffle opening and closing mechanism is used for opening and closing the left air inlet and the right air inlet.

4. A range hood as set forth in claim 3, wherein said baffle opening and closing mechanism includes:

the sliding rails are arranged on two sides of the air inlet;

the sliding support assembly is matched with the sliding rail and the baffle and is connected with the power mechanism, and the power mechanism can drive the sliding support assembly to slide in the sliding rail.

5. The range hood of claim 4, wherein the slide rail comprises a first slide rail section and a second slide rail section from bottom to top, the first slide rail section is disposed obliquely relative to the second slide rail section, and the slide rail comprises any one of the following: double-slide rail structure, single-slide rail structure.

6. The range hood of claim 5, wherein the baffle opening and closing mechanism comprises: the first baffle opening and closing mechanism and the second baffle opening and closing mechanism are correspondingly arranged at the left air inlet and the right air inlet.

7. The range hood of claim 6, wherein the slide rail is a dual slide rail structure, the dual slide rail structure comprising: the first slide rail is relatively close to the baffle plate, and the second slide rail is relatively far away from the baffle plate.

8. The range hood of claim 7, wherein a slope of the first slide rail segment of the first slide rail is less than a slope of the first slide rail segment of the second slide rail.

9. A range hood as set forth in claim 8 wherein said housing includes a side housing portion, said side housing portion further including a condensation plate disposed above said air inlet, said baffle at least partially overlapping said condensation plate when said baffle opening and closing mechanism is in an open position, said baffle being coplanar with said condensation plate when said baffle opening and closing mechanism is in a closed position.

10. A range hood as set forth in claim 9 wherein an oil cup is provided at the bottom of said side housing portion, and a lower end of said baffle is located inside said oil cup when said baffle opening and closing mechanism is in a closed state.

11. A range hood as set forth in claim 2 or 10 wherein said housing further includes a top housing portion disposed above said side housing portions.

12. The range hood according to claim 11, wherein the top housing portion is provided with an air suction opening, and the air suction opening comprises an array of oblong air suction holes.

13. The range hood according to claim 8, wherein one end of the power mechanism close to the sliding support assembly is provided with an elongated slot;

the sliding support component is provided with a plate-shaped body, a first sliding rail bearing rolling in the first sliding rail and a second sliding rail bearing rolling in the second sliding rail are connected to the body, and the body is further provided with a connecting pin which is clamped into the long groove and can move in the long groove.

14. The range hood of claim 13, wherein the power mechanism comprises: a gear, a rack and a driving source; one end of the rack close to the sliding support component is provided with the long groove, and the extending direction of the long groove is perpendicular to the lengthwise extending direction of the rack.

15. The range hood according to claim 14, wherein a spacer is provided between the first slide rail and the second slide rail, and a positioning bearing capable of rolling on the spacer is further connected to the body of the sliding support assembly.

16. The range hood of claim 5, wherein the slide rail is a single slide rail structure, the single slide rail structure comprising: the connecting piece is connected with the baffle and is provided with a slide rail bearing clamped in the slide rail; when the slide rail bearing moves to the second slide rail section, the baffle is driven to continuously slide along the direction of opening the air inlet.

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