Air suction opening opening and closing structure and range hood with air suction opening opening and closing structure

Abstract

The utility model discloses an exhaust inlet opening and closing structure and a range hood with the exhaust inlet opening and closing structure, and the exhaust inlet opening and closing structure is used for the range hood and comprises a base plate, an air inlet, an air outlet and an air outlet, the upper turning plate is connected to the upper part of the avoiding channel; the lower turning plate is connected to the lower part of the avoiding channel; wherein the upper turning plate and the lower turning plate have a first state that the upper turning plate and the lower turning plate get close to each other and close the avoiding channel and a second state that the upper turning plate and the lower turning plate get away from each other and open the avoiding channel. The exhaust inlet opening and closing structure can close the exhaust inlet of the range hood, and the attractiveness of the range hood is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a range hood technical field, specifically, a kind of suction port opening and closing structure and range hood with it. BACKGROUND

[0002] The suction port of existing range hood is usually always open structure, so that user can watch the inner cavity structure of range hood from suction port, affect the aesthetic degree of range hood. SUMMARY

[0003] The utility model aims at providing a kind of suction port opening and closing structure and range hood with it, it is used to solve the above technical problem.

[0004] The utility model discloses a kind of suction port opening and closing structure, for range hood, including:

[0005] Base plate, base plate is through and is provided with avoiding passage;

[0006] Upper flap, upper flap is connected in the upper of avoiding passage;

[0007] Lower flap, lower flap is connected in the lower of avoiding passage;

[0008] Wherein, upper flap and lower flap have the first state that mutually close avoiding passage and the second state that mutually open avoiding passage.

[0009] According to an embodiment of the utility model, upper flap is rotatably connected in the upper of avoiding passage, lower flap is rotatably connected in the lower of avoiding passage, upper flap and lower flap relatively rotate and open or close avoiding passage.

[0010] According to an embodiment of the utility model, the upper edge and the lower edge of avoiding passage are each equipped with several rotating seats, the lower edge of upper flap is equipped with several upper rotating blocks, the lower edge of lower flap is equipped with several lower rotating blocks, upper rotating block is rotatably connected with the rotating seat of the upper edge of avoiding passage, lower rotating block is rotatably connected with the rotating seat of the lower edge of avoiding passage, in the first state, the upper edge of upper flap and lower flap mutually close and abut, in the second state, the upper edge of upper flap and lower flap mutually apart.

[0011] According to an embodiment of the utility model, in the first state, upper flap and lower flap rotate to parallel state with base plate and close avoiding passage.

[0012] According to an embodiment of the utility model, still include drive assembly, drive assembly is used to drive upper flap and lower flap switch between the first state and the second state.

[0013] According to an embodiment of the utility model, drive assembly includes driving part and transmission part, driving part drives transmission part, transmission part makes upper flap and lower flap have opposite movement direction.

[0014] According to an embodiment of the utility model, drive piece includes drive motor, drive motor's output end is connected with drive gear, transmission piece includes first rack and second rack, first rack and second rack are located drive gear's both sides, and all with drive gear mesh, drive gear drives first rack and second rack reverse movement, first rack is connected with upturning board, second rack is connected with downturning board.

[0015] According to an embodiment of the utility model, upturning board is equipped with several upper connecting blocks, downturning board is equipped with several lower connecting blocks, transmission piece still includes pull rope, the free end of pull rope of connecting upper connecting block is connected with first rack, the free end of pull rope of connecting lower connecting block is connected with second rack.

[0016] According to an embodiment of the utility model, the slide is provided on the substrate, the slide is provided with an upper slide and a lower slide, the first rack and the second rack are respectively connected with the upper slide and the lower slide, and the drive gear is engaged between the first rack and the second rack.

[0017] The utility model discloses a kind of range hood, adopt suction port opening and closing structure, including range hood main body, range hood main body has suction panel, suction panel is equipped with suction port, substrate is connected to the rear side of suction panel, avoid passage is set around suction port, range hood starts when, upturning board and downturning board open suction port, range hood is powered off when, upturning board and downturning board close suction port.

[0018] Compared with prior art, the suction port opening and closing structure and the range hood with same have at least the following advantages:

[0019] The suction port opening and closing structure of the utility model can close the suction port by the mutual closing of the upturning board and the downturning board after completing the cooking work, avoid the user from watching the internal structure of the range hood from the suction port, and ensure the overall appearance of the range hood. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the first perspective view structure drawing of the range hood of the utility model;

[0021] Figure 2 It is the second perspective view structure drawing of the range hood of the utility model;

[0022] Figure 3 It is the Figure 2 Enlarged view of A part in the utility model;

[0023] Figure 4 It is the structure drawing of the suction port opening and closing structure of the utility model;

[0024] Figure 5 It is the Figure 4enlarged view of the right part of figure

[0025] Figure 6 the explosion view of the air suction opening opening and closing structure of the utility model;

[0026] Figure 7 the utility model discloses Figure 6 enlarged view of the left part of figure

[0027] Figure 8 the utility model discloses Figure 6 enlarged view of the right part of figure

[0028] In the figure: 1, base plate;11, avoid passage;12, transfer seat;13, sliding seat;2, upper turnover plate;21, upper transfer block;22, upper connecting block;3, lower turnover plate;31, lower transfer block;32, lower connecting block;4, drive assembly;41, drive motor;42, drive gear;43, first rack;44, second rack;45, pull rope;5, range hood main body;51, air suction panel;511, air suction opening.

[0029] The function realization and advantages of the utility model will be further explained by combining with embodiments and referring to the drawings. DETAILED DESCRIPTION

[0030] In the following, a plurality of embodiments of the utility model will be disclosed by using figures, and many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the utility model. That is to say, in some embodiments of the utility model, these practical details are unnecessary. In addition, for the purpose of simplifying the figures, some conventional structures and components will be drawn in a simple schematic way in the figures.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and does not mean to particularly indicate the order or sequence, nor to limit the present application, which is only to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0033] In order to further understand the content, characteristics and effects of the present application, the following examples are given, and the details are described as follows with reference to the drawings:

[0034] The utility model discloses a kind of suction port opening and closing structure, please refer to Figures 1 to 8 For range hood, comprising:

[0035] Substrate 1 is through and is provided with an avoidance passage 11;

[0036] Upper flap 2 is connected in the avoidance passage 11 upper side;

[0037] Lower flap 3 is connected in the avoidance passage 11 lower side;

[0038] Among them, upper flap 2 and lower flap 3 have the first state that mutually close and close avoidance passage 11 and the second state that mutually far away and open avoidance passage 11.

[0039] When installing, substrate 1 is installed on range hood main body 5, and makes avoidance passage 11 and the suction port 511 of range hood main body 5 communicate.

[0040] When cooking, make upper flap 2 and lower flap 3 in the second state, upper flap 2 and lower flap 3 mutually far away and open avoidance passage 11, to simultaneously suction and exhaust oil fume from suction port 511 and avoidance passage 11. After completing cooking, make upper flap 2 and lower flap 3 in the first state, at this time, upper flap 2 and lower flap 3 mutually close and close avoidance passage 11, that is, form the closure to suction port 511, to avoid user from viewing the internal structure of range hood from suction port 511, guarantee the overall appearance of range hood.

[0041] At the same time, after closing suction port 511 by upper flap 2 and lower flap 3 in closed state, it can prevent external sundries from entering into range hood through suction port 511.

[0042] Specifically, the upper flap 2 and the lower flap 3 are both mounted on the base plate 1. And the upper flap 2 and the lower flap 3 are both rectangular plate structures, and the width of the two when closed is greater than the opening width of the avoiding passage 11. Specifically, the width of the upper flap 2 and the lower flap 3 is equal, or the width of the upper flap 2 is greater than the width of the lower flap 3, or the width of the upper flap 2 is less than the width of the lower flap 3.

[0043] As one of the parallel installation modes of the embodiment, the upper flap 2 and the lower flap 3 can be connected to the base plate 1 in a rotating manner, and the closing of the air inlet 511 is realized by simultaneously rotating towards each other, and the opening of the air inlet 511 is realized by simultaneously rotating away from each other. As the second parallel installation mode of the embodiment, the upper flap 2 and the lower flap 3 can be installed on the base plate 1 in a sliding manner, and the closing of the air inlet 511 is realized by sliding towards each other, and the opening of the air inlet 511 is realized by sliding away from each other.

[0044] The air inlet opening and closing structure of the utility model, please refer to Figures 4 to 8 The upper flap 2 is rotatably connected above the avoiding passage 11, the lower flap 3 is rotatably connected below the avoiding passage 11, and the upper flap 2 and the lower flap 3 are relatively rotated to open or close the avoiding passage 11.

[0045] When the cooking is completed, the upper flap 2 is rotated about its rotation axis, and the free end thereof is rotated to the opening direction of the avoiding passage 11, and at the same time, the lower flap 3 is rotated about its rotation axis, and the free end thereof is synchronously rotated to the opening direction of the avoiding passage 11, so that the upper flap 2 and the lower flap 3 are simultaneously relatively rotated and close the avoiding passage 11, and the closing of the air inlet 511 is realized. Similarly, when the cooking is performed, the upper flap 2 and the lower flap 3 are simultaneously relatively rotated and open the avoiding passage 11, so that the opening of the avoiding passage 11 is realized, and the opening of the air inlet 511 is realized, and at this time, the range hood can be opened to perform the oil fume suction and exhaust operation.

[0046] On the basis of the above embodiment, the rotation axis of the upper flap 2 and the rotation axis of the lower flap 3 are located on the same plane, and the plane is parallel to the plate surface of the base plate 1, so as to ensure that the end portions of the upper flap 2 and the lower flap 3 can abut each other and realize the closing when the upper flap 2 and the lower flap 3 are relatively rotated and close the avoiding passage 11.

[0047] As one of the parallel schemes of the above embodiment, the upper flap 2 is rotatably connected below the avoiding passage 11, the lower flap 3 is rotatably connected above the avoiding passage 11, and the upper flap 2 and the lower flap 3 are relatively rotated to open or close the avoiding passage 11.

[0048] As the second parallel scheme of the above embodiment, the upper flap 2 and the lower flap 3 are arranged in the left-right direction, the upper flap 2 is rotationally connected to the left side or the right side of the avoiding passage 11, the lower flap 3 is rotationally connected to the right side or the left side of the avoiding passage 11, and the upper flap 2 and the lower flap 3 are relatively rotated to open or close the avoiding passage 11.

[0049] Compared with the second parallel scheme, the rotation radius of the upper flap 2 and the lower flap 3 is the smallest, the required rotation space is the smallest, and the upper flap 2 and the lower flap 3 are convenient to disassemble and use.

[0050] The air suction opening and closing structure of the utility model, please refer to Figures 4 to 8 The upper edge and the lower edge of the avoiding passage 11 are provided with a plurality of rotating seats 12, the lower edge of the upper flap 2 is provided with a plurality of upper rotating blocks 21, the lower edge of the lower flap 3 is provided with a plurality of lower rotating blocks 31, the upper rotating block 21 is rotationally connected with the rotating seat 12 of the upper edge of the avoiding passage 11, the lower rotating block 31 is rotationally connected with the rotating seat 12 of the lower edge of the avoiding passage 11, in the first state, the upper edges of the upper flap 2 and the lower flap 3 are close to each other and abut, in the second state, the upper edges of the upper flap 2 and the lower flap 3 are away from each other.

[0051] The plurality of rotating seats 12 of the upper edge of the avoiding passage 11 and the plurality of upper rotating blocks 21 of the upper flap 2 are located on the same straight line, and the upper rotating block 21 is rotationally connected with the corresponding plurality of rotating seats 12 of the upper edge of the avoiding passage 11, so as to ensure the rotation stability of the upper flap 2. The plurality of rotating seats 12 of the lower edge of the avoiding passage 11 and the plurality of lower rotating blocks 31 of the lower flap 3 are located on the same straight line, and the lower rotating block 31 is rotationally connected with the corresponding plurality of rotating seats 12 of the lower edge of the avoiding passage 11, so as to ensure the rotation stability of the lower flap 3. Thus, the upper flap 2 and the lower flap 3 can stably close the avoiding passage 11.

[0052] The cooperation of each rotating seat 12 with the upper rotating block 21 and the lower rotating block 31 can make the rotation of the upper flap 2 and the lower flap 3 more smooth. On the basis of the above embodiment, the rotating seat 12 and the corresponding upper rotating block 21 can be connected through the cooperation of a rotating shaft and a bearing, and the rotating seat 12 and the corresponding lower rotating block 31 can also be connected through the cooperation of a rotating shaft and a bearing, which can effectively reduce the friction resistance during rotation, so that the upper flap 2 and the lower flap 3 are more flexible and the operation is more convenient when rotating towards or away from each other to close or open the avoiding passage 11.

[0053] The rotating seat 12, the upper rotating block 21 and the lower rotating block 31 are independently arranged, and in the installation process, the rotating seat 12 can be first fixed at the edge of the avoiding channel 11, and then the upper rotating block 21 and the lower rotating block 31 are connected with the corresponding rotating seat 12 respectively, so that the installation process is relatively simple and convenient to operate. When maintaining in the later period, if the rotating seat 12, the upper rotating block 21 and / or the lower rotating block 31 appear wear and tear and other problems, the replacement and maintenance can be relatively conveniently carried out, and the maintenance cost and difficulty are reduced. In addition, in different application scenarios, different specifications and types of rotating seat 12, upper rotating block 21 and lower rotating block 31 can be selected according to specific needs to adapt to different working conditions and use requirements. For example, in a high-humidity environment, the rotating seat 12, the upper rotating block 21 and the lower rotating block 31 can be made of materials with corrosion resistance to improve the environmental adaptability of the device.

[0054] On the basis of the above embodiment, each rotating seat 12 is arranged close to the upper edge and the lower edge of the avoiding channel 11, so that the width of the upper turning plate 2 and the lower turning plate 3 is as small as possible, the rotating radius of the upper turning plate 2 and the lower turning plate 3 is reduced, and the installation space is reduced.

[0055] A plurality of rotating seats 12 are arranged at intervals on the upper edge and the lower edge of the avoiding channel 11, and a plurality of upper rotating blocks 21 are correspondingly distributed on the upper turning plate 2, and a plurality of lower rotating blocks 31 are correspondingly distributed on the lower turning plate 3, each upper rotating block 21 is located on both sides of each rotating seat 12 on the upper edge of the avoiding channel 11, and each lower rotating block 31 is located on both sides of each rotating seat 12 on the lower edge of the avoiding channel 11, each upper rotating block 21 and each rotating seat 12 can be simultaneously rotatably installed through a rotating shaft (not shown in the figure), and each lower rotating block 31 and each rotating seat 12 can be simultaneously rotatably installed through another rotating shaft (not shown in the figure).

[0056] The air suction opening and closing structure of the utility model, please refer to Figures 4 to 8 The upper turning plate 2 and the lower turning plate 3 are rotated to the state of being parallel to the base plate 1 and close the avoiding channel 11.

[0057] When the cooking is finished and the upper turning plate 2 and the lower turning plate 3 are rotated towards each other and close the avoiding channel 11, the upper turning plate 2 and the lower turning plate 3 are parallel to the base plate 1, forming a same plane structure, and the surface of the whole plate formed is more flat and smooth, without protruding components or uneven surfaces, improving the overall appearance of the equipment, especially in some smoke machines with high appearance requirements, the appearance has certain value. At the same time, the flat surface has no complex concave-convex or gap, and the customer can enter from the air suction opening 511 and carry out cleaning and maintenance work, which is beneficial to keeping the environment clean and sanitary.

[0058] The air suction opening and closing structure of the utility model, please refer to Figures 4 to 8Further comprising a driving assembly 4 for driving the upper turning plate 2 and the lower turning plate 3 to switch between the first state and the second state.

[0059] When the cooking is completed and the range hood is closed, the upper turning plate 2 and the lower turning plate 3 can be simultaneously driven to rotate towards each other by the driving assembly 4, so that the upper turning plate 2 and the lower turning plate 3 are close to each other and the avoiding passage 11 is closed, forming the first state; when the cooking operation is performed, the upper turning plate 2 and the lower turning plate 3 can be simultaneously driven to rotate away from each other by the driving assembly 4, so that the upper turning plate 2 and the lower turning plate 3 are away from each other and the avoiding passage 11 is opened, forming the second state.

[0060] As one of the parallel installation modes of the embodiment, the upper turning plate 2 and the lower turning plate 3 can be connected to the base plate 1 in a rotating installation mode, at this time, the driving assembly 4 can simultaneously drive the upper turning plate 2 and the lower turning plate 3 to realize the opening or closing of the avoiding passage 11.

[0061] The air suction opening and closing structure of the utility model, please refer to Figures 4 to 8 The driving assembly 4 comprises a driving member and a transmission member, the driving member drives the transmission member, and the transmission member makes the upper turning plate 2 and the lower turning plate 3 have opposite movement directions.

[0062] When the cooking is completed and the range hood is closed, the transmission member can be driven to move by the driving member, and the upper turning plate 2 and the lower turning plate 3 can be simultaneously driven to rotate towards each other by the transmission of the transmission member, so that the upper turning plate 2 and the lower turning plate 3 are close to each other and the avoiding passage 11 is closed, forming the first state; when the cooking operation is performed, the transmission member can be driven to move by the driving member, and the upper turning plate 2 and the lower turning plate 3 can be simultaneously driven to rotate away from each other by the transmission of the transmission member, so that the upper turning plate 2 and the lower turning plate 3 are away from each other and the avoiding passage 11 is opened, forming the second state.

[0063] On the basis of the above embodiment, the driving member can be connected with the control system of the range hood, and the operation of the driving member is controlled by sending instructions by the control system, so that the remote control of the upper turning plate 2 and the lower turning plate 3 is realized.

[0064] The air suction opening and closing structure of the utility model, please refer to Figures 3 to 8 The driving member comprises a driving motor 41, the output end of the driving motor 41 is connected with a driving gear 42, the transmission member comprises a first rack 43 and a second rack 44, the first rack 43 and the second rack 44 are located at the two sides of the driving gear 42 respectively, and are engaged with the driving gear 42, the driving gear 42 drives the first rack 43 and the second rack 44 to move reversely, the first rack 43 is connected with the upper turning plate 2, and the second rack 44 is connected with the lower turning plate 3.

[0065] When the cooking is completed and the range hood is closed, the driving motor 41 is started to drive the driving gear 42 to rotate, and the first rack 43 and the second rack 44 engaged with the driving gear 42 simultaneously move in the opposite direction, so that the upper turning plate 2 and the lower turning plate 3 connected with the first rack 43 and the second rack 44 respectively simultaneously move in the opposite direction, and the avoiding channel 11 is closed, which is the first state. Figure 5 For example, the first rack 43 and the second rack 44 simultaneously move in the opposite direction, and the overall length formed by the first rack 43 and the second rack 44 is shortened, at this time, the upper turning plate 2 and the lower turning plate 3 connected with the first rack 43 and the second rack 44 respectively simultaneously move in the opposite direction, so that the avoiding channel 11 is closed, which is the first state.

[0066] When the cooking is performed, the driving motor 41 is started to drive the driving gear 42 to rotate reversely, and the first rack 43 and the second rack 44 engaged with the driving gear 42 simultaneously move reversely, so that the upper turning plate 2 and the lower turning plate 3 connected with the first rack 43 and the second rack 44 respectively simultaneously move reversely, and the avoiding channel 11 is opened, which is the second state. Figure 5 For example, the first rack 43 and the second rack 44 simultaneously move in the opposite direction, and the overall length formed by the first rack 43 and the second rack 44 is shortened, at this time, the upper turning plate 2 and the lower turning plate 3 connected with the first rack 43 and the second rack 44 respectively simultaneously move in the opposite direction, so that the avoiding channel 11 is closed, which is the first state.

[0067] The driving motor 41 can be connected with the control system of the range hood, and the operation of the driving motor 41 is controlled by the control system to send instructions, so that the remote control of the upper turning plate 2 and the lower turning plate 3 is realized.

[0068] The transmission mode that the driving gear 42 is engaged with the first rack 43 and the second rack 44 simultaneously can ensure the stability and reliability of power transmission, accurately transmit the power of the driving motor 41 to the upper turning plate 2 and the lower turning plate 3, and make them rotate according to the predetermined direction and angle, so that the problems such as slipping and shaking in the transmission process are reduced, and the opening and closing actions of the avoiding channel 11 are accurate. At the same time, the driving gear 42 is engaged with the first rack 43 and the second rack 44 simultaneously, so that the upper turning plate 2 and the lower turning plate 3 can move towards or away from each other simultaneously, and the problems such as the avoiding channel 11 being not closed tightly or not opened smoothly due to the asynchronous actions of the upper turning plate 2 and the lower turning plate 3 are avoided.

[0069] The air suction opening and closing structure of the utility model, please refer to Figures 3 to 8 The upper turning plate 2 is provided with a plurality of upper connecting blocks 22, the lower turning plate 3 is provided with a plurality of lower connecting blocks 32, the transmission member further comprises a pull rope 45, the free end of the pull rope 45 connected with the upper connecting block 22 is connected with the first rack 43, and the free end of the pull rope 45 connected with the lower connecting block 32 is connected with the second rack 44.

[0070] In the embodiment, the fixed end of one of the pull ropes 45 is fixedly connected with each of the upper connecting blocks 22 on the upper turnover plate 2, and the fixed end of the other pull rope 45 is fixedly connected with each of the lower connecting blocks 32 on the lower turnover plate 3. When the first rack 43 and the second rack 44 are simultaneously reversely moved through the driving of the driving motor 41 and the transmission of the driving gear 42, the first rack 43 can pull the lower turnover plate 3 to move through the other pull rope 45, and simultaneously, the second rack 44 can pull the upper turnover plate 2 to move through one of the pull ropes 45, so that the upper turnover plate 2 and the lower turnover plate 3 are simultaneously moved towards or away from each other, and the closing or opening of the avoiding passage 11 is realized.

[0071] On the basis of the above embodiment, each of the upper connecting blocks 22 on the upper turnover plate 2 is located on the same straight line and is spaced along the length direction of the upper turnover plate 2, and each of the lower connecting blocks 32 on the lower turnover plate 3 is located on the same straight line and is spaced along the length direction of the lower turnover plate 3. Figure 5 Each of the upper connecting blocks 22 on the upper turnover plate 2 is fixedly connected to the inner side or the outer side of the upper turnover plate 2, such as Figure 5 Each of the lower connecting blocks 32 on the lower turnover plate 3 is fixedly connected to the inner side or the outer side of the lower turnover plate 3, such as

[0072] The air suction opening and closing structure of the utility model, please refer to Figures 3 to 8 The base plate 1 is provided with a sliding seat 13, the sliding seat 13 is provided with an upper sliding strip and a lower sliding strip, the first rack 43 and the second rack 44 are respectively slidably connected with the upper sliding strip and the lower sliding strip, and the driving gear 42 is engaged between the first rack 43 and the second rack 44.

[0073] In the embodiment, the sliding seat 13 is fixedly connected to the base plate 1, so as to form a stable installation basis for the first rack 43 and the second rack 44 through the connection of the upper sliding strip and the lower sliding strip, and the stable sliding of the first rack 43 and the second rack 44 is ensured.

[0074] As a specific scheme of the embodiment, the sliding seat 13 is in a "U" structure and horizontally faces the opening of the avoiding passage 11, the driving gear 42 is rotatably installed in the opening of the sliding seat 13, and the bottom of the sliding seat 13 is provided with a through hole structure through which the output shaft of the driving motor 41 passes and is coaxially connected with the driving gear 42. Specifically, one arm of the sliding seat 13 is located on the same plane as the base plate 1 and is fixedly connected to the base plate 1, and the lower sliding strip is fixedly connected to the one arm, so as to realize the sliding installation of the second rack 44, and the upper sliding strip is fixedly connected to the other arm of the sliding seat 13, so as to realize the sliding installation of the first rack 43.

[0075] The cross section of the upper slide and the lower slide can be in a stepped or dovetail structure, and the first rack 43 and the second rack 44 are provided with matched stepped grooves or dovetail grooves, so that the first rack 43 and the second rack 44 are slidably installed, and the first rack 43 is prevented from being separated from the upper slide, and the second rack 44 is prevented from being separated from the lower slide, and the stability of the first rack 43 and the second rack 44 during sliding is ensured.

[0076] The utility model discloses still a kind of range hood, please refer to Figures 1 to 3 , adopt suction port opening and closing structure, including range hood main body 5, range hood main body 5 has suction panel 51, suction panel 51 is provided with suction port 511, base plate 1 is connected to the rear side of suction panel 51, avoids passage 11 around suction port 511 to be arranged, range hood starts when, upper flap 2 and lower flap 3 open suction port 511, range hood is powered off when, upper flap 2 and lower flap 3 close suction port 511.

[0077] Wherein, range hood main body 5 is installed on wall, and the side of its abutment with wall is rear side (back), and it is oriented to stove opening downward, and it is oriented to opening forward, to form user operation space. In the embodiment, suction port 511 is provided with through suction panel 51, that is, in space, suction port 511 is directly opposite to user, to be sucked and discharged by suction port 511 when using.

[0078] Base plate 1 is connected to the rear side of suction panel 51, so that the base plate 1, upper flap 2 and lower flap 3 of suction port opening and closing structure are all hiddenly installed on the rear side of base plate 1, hidden, to ensure the appearance of the whole range hood. At the same time, suction panel 51 can form a barrier to the oil fume generated during cooking process and the suction port opening and closing structure, to prevent the oil fume from polluting the suction port opening and closing structure, so as to ensure the service life of the suction port opening and closing structure.

[0079] When cooking, the driving assembly 4 of the suction port opening and closing structure simultaneously drives the upper flap 2 and the lower flap 3 to rotate, so that the upper flap 2 and the lower flap 3 open the avoidance passage 11, so that the oil fume can be sucked and discharged from the suction port 511. When cooking is completed, the driving assembly 4 can simultaneously drive the upper flap 2 and the lower flap 3 to rotate reversely, so that the upper flap 2 and the lower flap 3 close the suction port 511, and the suction port 511 is in a closed state, so that the user cannot view the inner cavity structure of the range hood from the suction port 511. Keeping the suction port 511 closed can ensure the overall appearance of the range hood.

[0080] In addition, the rotatable upper flap 2 and lower flap 3 can make it easier to wipe and clean the suction port 511 and suction panel 51 during cleaning, remove accumulated oil stains and dust, etc., maintain good performance of the equipment, and prolong the service life of the equipment.

[0081] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A suction vent opening and closing structure for a range hood, characterized in that, The utility model relates to a kind of escape channel closing and opening device, including: Substrate (1), substrate (1) is provided with escape channel (11) through opening; Upper flap (2), upper flap (2) is connected above escape channel (11); Lower flap (3), lower flap (3) is connected below escape channel (11); Wherein, upper flap (2) and lower flap (3) have the first state of mutual approach and close escape channel (11) and the second state of mutual away and open escape channel (11).

2. The air inlet opening and closing structure according to claim 1, characterized by Upper flap (2) is rotatably connected above escape channel (11), lower flap (3) is rotatably connected below escape channel (11), upper flap (2) and lower flap (3) relative rotation and open or close escape channel (11).

3. The air inlet opening and closing structure according to claim 2, wherein The upper edge and lower edge of escape channel (11) are each equipped with several rotating seats (12), the lower edge of upper flap (2) is equipped with several upper rotating blocks (21), the lower edge of lower flap (3) is equipped with several lower rotating blocks (31), the upper rotating block (21) is rotatably connected with the rotating seat (12) of the upper edge of escape channel (11), the lower rotating block (31) is rotatably connected with the rotating seat (12) of the lower edge of escape channel (11), in the first state, the upper edge of upper flap (2) and lower flap (3) is mutually close and abuts, in the second state, the upper edge of upper flap (2) and lower flap (3) is mutually away.

4. The air inlet opening and closing structure according to claim 1, wherein In the first state, upper flap (2) and lower flap (3) are rotated to the state of parallel with substrate (1) and close escape channel (11).

5. The air inlet opening and closing structure according to claim 1, wherein Further including drive assembly (4), drive assembly (4) is used to drive upper flap (2) and lower flap (3) switch between the first state and the second state.

6. The air inlet opening and closing structure according to claim 5, wherein The drive assembly (4) includes a drive member and a transmission member, the drive member drives the transmission member, the transmission member makes upper flap (2) and lower flap (3) have opposite movement directions.

7. The air inlet opening and closing structure according to claim 6, wherein The drive member includes a drive motor (41), the output end of drive motor (41) is connected with drive gear (42), the transmission member includes first rack (43) and second rack (44), first rack (43) and second rack (44) are located at the two sides of drive gear (42) respectively, and are all engaged with drive gear (42), drive gear (42) drives first rack (43) and second rack (44) reverse movement, first rack (43) is connected with upper flap (2), second rack (44) is connected with lower flap (3).

8. The air inlet opening and closing structure according to claim 7, wherein Upper flap (2) is equipped with several upper connecting blocks (22), lower flap (3) is equipped with several lower connecting blocks (32), the transmission member further includes pull rope (45), the free end of pull rope (45) connected with upper connecting block (22) is connected with first rack (43), the free end of pull rope (45) connected with lower connecting block (32) is connected with second rack (44).

9. The air inlet opening and closing structure according to claim 7, wherein The base plate (1) is provided with a sliding seat (13), the sliding seat (13) is provided with upper and lower sliding strips, the first and second racks (43, 44) are respectively in sliding connection with the upper and lower sliding strips, and the driving gear (42) is engaged between the first and second racks (43, 44).

10. A range hood employing the opening and closing structure of the air intake according to any one of claims 1 to 9, characterized in that, The smoke machine body (5) has a suction panel (51) with a suction port (511), the base plate (1) is connected to the rear side of the suction panel (51), the avoiding channel (11) is arranged around the suction port (511), when the smoke machine is started, the upper and lower turning plates (2, 3) open the suction port (511), and when the smoke machine is turned off, the upper and lower turning plates (2, 3) close the suction port (511).

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