Air inlet opening and closing device and extractor hood

Abstract

The application relates to the field of kitchen electric appliances, in particular to an air inlet opening and closing device and an extractor hood. The air inlet opening and closing device is used for the extractor hood, and the air inlet opening and closing device comprises a driving device, a transmission assembly and air deflectors. The number of the air deflectors is multiple, and the air deflectors are arranged in correspondence with air inlets of the extractor hood. The driving device is connected with the multiple air deflectors through the transmission assembly to drive the multiple air deflectors to move synchronously, so as to open or close the multiple air inlets. The air inlet opening and closing device provided by the application can realize the synchronous opening and closing effect of the multiple air inlets by arranging only one driving device, can improve the smoke suction effect of the extractor hood, and can reduce the cost.

Description

Technical Field

[0001] This application relates to the field of kitchen appliances, and in particular to an air inlet opening and closing device and a range hood. Background Technology

[0002] Range hoods typically have only one air inlet. This method often fails to effectively distribute negative pressure to the location that matches the rising path of the cooking fumes, thus causing the fumes to escape.

[0003] Currently, some range hoods with multiple air inlets often use multiple drive mechanisms to open and close the multiple air inlets, resulting in high costs. Summary of the Invention

[0004] The purpose of this application is to provide an air inlet opening and closing device and a range hood, which can realize the synchronous opening and closing of multiple air inlets through a single drive device, thereby reducing production costs.

[0005] This application provides an air inlet opening and closing device for a range hood, the air inlet opening and closing device including a driving device, a transmission component and an air guide plate;

[0006] The number of air guide plates is multiple, and the air guide plates are arranged corresponding to the air inlet of the range hood;

[0007] The drive device is connected to the multiple air guide plates through the transmission assembly to drive the multiple air guide plates to move synchronously, thereby opening or closing the multiple air inlets.

[0008] In the above technical solution, the transmission assembly further includes a main connecting rod and a first auxiliary connecting rod;

[0009] The number of air inlets is two, one of which is the first air inlet, and the air guide plate corresponding to the first air inlet is the first air guide plate, with one end of the first air guide plate hinged to the first air inlet.

[0010] One end of the first auxiliary connecting rod is hinged to one end of the main connecting rod, and the other end of the first auxiliary connecting rod is hinged to the first air guide plate. The driving device drives the main connecting rod to rotate, thereby causing the first air guide plate to flip and thus open or close the first air inlet.

[0011] In the above technical solution, the first air guide plate further includes a first plate, a hinge, and a connecting lug;

[0012] The top of the first plate is provided with at least two hinges so that the top of the first plate is hinged to the top of the first air inlet; the bottom of the first plate swings away from the range hood to open the first air inlet.

[0013] The inner side of the first plate is provided with a connecting lug to connect the first auxiliary connecting rod.

[0014] In the above technical solution, the transmission assembly further includes a second connecting rod;

[0015] The other air inlet is a second air inlet, and the air guide plate corresponding to the second air inlet is a second air guide plate; the range hood housing assembly is provided with a slide rail, and the second air guide plate is installed on the slide rail;

[0016] One end of the second auxiliary connecting rod is hinged to the other end of the main connecting rod, and the other end of the second auxiliary connecting rod is hinged to the second air guide plate. When the driving device drives the main connecting rod to rotate, the second air guide plate moves along the slide rail to approach or move away from the second air inlet.

[0017] In the above technical solution, the slide rail further includes a first guide portion and a second guide portion connected to each other;

[0018] The first guide portion forms a straight guide path, so that the second air guide plate translates along the first guide portion;

[0019] The second guide portion forms an arc-shaped guide path, so that the second air guide plate slides along the second guide portion and flips relative to the second air inlet;

[0020] The arc-shaped guide path is tangent to the straight guide path.

[0021] In the above technical solution, the second air guide plate further includes a second plate, a connecting plate, and a slider;

[0022] The second plate has connecting plates at both ends, and the sliders are mounted on the connecting plates.

[0023] The slide rail is correspondingly provided with the slider, and the slider is slidably mounted on the slide rail.

[0024] In the above technical solution, the slider further includes a fixed block and a plurality of rollers mounted on the fixed block, the fixed block is connected to the connecting plate, and the rollers are slidably mounted on the slide rail.

[0025] The above technical solution further includes a smoke sensor and a controller;

[0026] The smoke sensor is used to sense the amount of smoke to be adsorbed. When the amount of smoke to be adsorbed is less than a first preset amount, the controller is electrically connected to the drive device to drive the main connecting rod to rotate by a first preset angle, causing the first air guide plate to flip by a second preset angle in the direction away from the first air inlet, and causing the second air guide plate to translate along the first guide portion in the direction away from the second air inlet.

[0027] When the amount of smoke to be adsorbed is greater than or equal to the first preset amount, the controller is electrically connected to the drive device to drive the main connecting rod to rotate by a third preset angle, causing the first air guide plate to flip by a fourth preset angle away from the first air inlet, and causing the second air guide plate to slide along the second guide portion away from the second air inlet and flip relative to the second air inlet.

[0028] Furthermore, the above technical solution also includes a fixing base, which is connected to the housing assembly of the range hood, and the driving device is installed on the fixing base.

[0029] This application also provides a range hood, including the air inlet opening and closing device described in the above solution.

[0030] Compared with the prior art, the beneficial effects of this application are as follows:

[0031] The air inlet opening and closing device provided in this application only requires one drive device to achieve the effect of simultaneous opening and closing of multiple air inlets, which can improve the smoke extraction effect of the range hood while reducing costs.

[0032] This application also provides a range hood, including the air inlet opening and closing device described in the above solution. Based on the above analysis, it is clear that the range hood also has the aforementioned beneficial effects, which will not be elaborated further here. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a structural diagram of the range hood provided in this application;

[0035] Figure 2 A first structural schematic diagram of the air inlet opening and closing device provided in this application;

[0036] Figure 3A second structural schematic diagram of the air inlet opening and closing device provided in this application;

[0037] Figure 4 A schematic diagram of the first motion state of the air inlet opening and closing device provided in this application;

[0038] Figure 5 This is a schematic diagram of the second motion state of the air inlet opening and closing device provided in this application.

[0039] In the diagram: 101-Drive device; 102-Transmission assembly; 103-Box assembly; 104-First air inlet; 105-Filter screen; 106-Second air inlet; 107-Fixed base; 108-Main connecting rod; 109-First auxiliary connecting rod; 110-Second auxiliary connecting rod; 111-First rotating pivot; 112-First air guide plate; 113-First plate; 114-Hinge; 115-Connecting ear; 116-Second rotating pivot; 117-Third rotating pivot; 118-Second air guide plate; 119-Slide rail; 120-Fourth rotating pivot; 121-Fifth rotating pivot; 122-First guide part; 123-Second guide part; 124-Second plate; 125-Connecting plate; 126-Connecting rod; 127-Slider; 128-Fixed block; 129-Roller. Detailed Implementation

[0040] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] Example 1

[0044] See Figures 1 to 4 As shown, the air inlet opening and closing device provided in this application is used in a range hood. The range hood has at least two air inlets, which can effectively distribute the negative pressure to a position that matches the rising path of the fumes, thus preventing the fumes from escaping.

[0045] The air inlet opening and closing device includes a drive unit 101, a transmission assembly 102, and air guide plates. The number and position of the air guide plates correspond to the number and position of the air inlets of the range hood, so as to block multiple air inlets respectively.

[0046] The drive unit 101 is connected to multiple air guide plates via the transmission assembly 102. When the drive unit 101 is turned on, it drives the multiple air guide plates to move synchronously, thereby opening or closing multiple air inlets simultaneously. When the range hood is in operation, the drive unit 101 drives the multiple air guide plates to move synchronously to open multiple air inlets, thus achieving the function of extracting cooking fumes. When the range hood is not in operation, the drive unit 101 can drive the multiple air guide plates to move synchronously to close multiple air inlets, effectively preventing backflow of cooking fumes into the public duct and causing pollution to the kitchen environment.

[0047] The air inlet opening and closing device provided in this application only requires one drive device 101 to achieve the effect of simultaneous opening and closing of multiple air inlets, which can improve the smoke extraction effect of the range hood while reducing costs.

[0048] In the optional solutions of this embodiment, such as Figure 1 As shown in the figure, the range hood is a side-draft type. The inclined surface of the range hood's housing assembly 103 is the windward side, and this side has two air inlets arranged vertically. The upper air inlet is the first air inlet 104, which is the main air inlet and plays a primary role in smoke extraction. A filter screen 105 for filtering grease is installed at the first air inlet 104, which is the main air inlet. The lower air inlet is the second air inlet 106, which is an auxiliary air inlet and plays a supporting role in smoke extraction. A fan assembly is installed inside the housing assembly 103. The main function of the fan assembly is to generate power and provide negative pressure. The first air inlet 104 and the second air inlet 106 are respectively connected to the fan assembly inside the housing assembly 103.

[0049] See Figures 1 to 3 As shown, the drive device 101 is specifically a motor. Both the drive device 101 and the transmission assembly 102 are located inside the housing assembly 103. A fixed seat 107 is provided inside the housing assembly 103 and is connected to the housing assembly 103. The drive device 101 is mounted on the fixed seat 107. The transmission assembly 102 includes a main connecting rod 108, a first auxiliary connecting rod 109, and a second auxiliary connecting rod 110. The output shaft of the drive device 101 is connected to the middle part of the main connecting rod 108, and the connection point between the two forms a first rotation fulcrum 111. Under the drive of the drive device 101, the main connecting rod 108 rotates around the first rotation fulcrum 111.

[0050] A first air guide plate 112 is provided corresponding to the first air inlet 104, and one end of the first air guide plate 112 is hinged to the first air inlet 104. The first air guide plate 112 includes a first plate 113, a hinge 114, and a connecting ear 115. One end of the hinge 114 is fixed to the first plate 113, and the other end of the hinge 114 is fixed to the first air inlet 104 of the housing assembly 103. The bottom end of the first plate 113 swings away from the range hood, which opens the first air inlet 104 from below, so that the rising smoke can be directly sucked into the housing assembly 103, and the outward opening of the first plate 113 can also gather the smoke. In order to maintain the stability of the movement of the first plate 113, the number of hinges 114 is not less than two. Figure 2 The two hinges 114 shown are symmetrically distributed to make the force more balanced.

[0051] One end of the first auxiliary connecting rod 109 is hinged to one end of the main connecting rod 108, and the connection point between the two forms a second rotation fulcrum 116. The other end of the first auxiliary connecting rod 109 is hinged to the connecting lug 115 on the inner side of the first plate 113, and the connection point between the two forms a third rotation fulcrum 117. When the driving device 101 drives the main connecting rod 108 to rotate around the first rotation fulcrum 111, the main connecting rod 108 drives the first auxiliary connecting rod 109 to move, and the first auxiliary connecting rod 109 drives the first air guide plate 112 to swing, so as to open or close the first air inlet 104.

[0052] The air guide plate corresponding to the second air inlet 106 is the second air guide plate 118, and the installation method of the second air guide plate 118 is different from that of the first air guide plate 112. Specifically, a slide rail 119 is provided inside the housing assembly 103 of the range hood, and the second air guide plate 118 is installed at the slide rail 119. One end of the second auxiliary connecting rod 110 is hinged to the end of the main connecting rod 108 away from the first auxiliary connecting rod 109, and the connection point of the two forms a fourth rotation fulcrum 120. The other end of the second auxiliary connecting rod 110 is hinged to the second air guide plate 118, and the connection point of the two forms a fifth rotation fulcrum 121. When the driving device 101 drives the main connecting rod 108 to rotate around the first rotation fulcrum 111, the main connecting rod 108 drives the second auxiliary connecting rod 110 to move, and the second auxiliary connecting rod 110 drives the second air guide plate 118 to move along the slide rail 119, so that the second air guide plate 118 moves closer to or further away from the second air inlet 106.

[0053] by Figure 4 and Figure 5 Taking the structure shown as an example, the movement process of the air inlet opening and closing device is explained as follows: When the range hood is working, the main connecting rod 108 rotates counterclockwise. The main connecting rod 108 pushes the first guide plate 112 outward from the range hood through the first auxiliary connecting rod 109 to open the first air inlet 104. At the same time, the counterclockwise rotating main connecting rod 108 pulls the second guide plate 118 inward from the range hood through the second auxiliary connecting rod 110, so that the second guide plate 118 is away from the second air inlet 106, thereby opening the second air inlet 106 simultaneously. When the range hood is not working, the main connecting rod 108 rotates clockwise. The first auxiliary connecting rod 109, the first guide plate 112, the second auxiliary connecting rod 110, and the second guide plate 118 perform the reverse movement process, thereby closing the first air inlet 104 and the second air inlet 106 simultaneously.

[0054] In the optional solutions of this embodiment, such as Figure 4 and Figure 5 As shown, the slide rail 119 includes a first guide portion 122 and a second guide portion 123 connected to each other. The first guide portion 122 forms a straight guide path. When the main connecting rod 108 pulls the second air guide plate 118 from left to right through the second auxiliary connecting rod 110, the second air guide plate 118 first moves horizontally to the right along the first guide portion 122. During the movement, the second air guide plate 118 is always parallel to the second air inlet 106, and the opening range of the second air guide plate 118 relative to the second air inlet 106 is relatively small.

[0055] When the second guide vane 118 moves to the rightmost end of the first guide section 122, the arc-shaped guide path is tangent to the straight guide path. The continuously moving second guide vane 118 will slide into the second guide section 123 to slide along the guide path of the second guide section 123. The second guide section 123 forms a downward-bending arc-shaped guide path. When the second guide vane 118 slides along the second guide section 123, the second guide vane 118 flips upward relative to the second air inlet 106. At this time, the second guide vane 118 and the second air inlet 106 form an angle, the purpose of which is to increase the opening range of the second air inlet 106 and increase the amount of smoke entering the second air inlet 106.

[0056] Specifically, the second air guide plate 118 includes a second plate 124, a connecting plate 125, and a slider 127. Connecting plates 125 are provided at both ends of the second plate 124, and the connecting plates 125 are located inside the second plate 124 and can be hidden within the housing assembly 103. A connecting rod 126 is installed between the two connecting plates 125 to make the structure more stable. A connecting lug 115 is also provided in the middle of the connecting rod 126, and the connecting lug 115 is hinged to the second auxiliary connecting rod 110.

[0057] The left and right side panels of the housing assembly 103 are each equipped with slide rails 119, and the connecting plates 125 on both sides are each equipped with corresponding sliders 127. Each slider 127 includes a fixing block 128 and multiple rollers 129 mounted on the fixing block 128. The fixing block 128 is connected to the connecting plate 125, and the rollers 129 are slidably mounted on the slide rails 119. The arrangement of the multiple rollers 129 allows the second air guide plate 118 to rotate relative to the second air inlet 106. Figure 5 The image shows two rollers 129. During the movement of the second air guide plate 118 to the right, the right roller 129 first enters the second guide section 123, while the left roller is still in the first guide section 122. Since the second guide section 123 has an arc-shaped guide path, the right side of the slider 127 swings downward, thereby causing the second air guide plate 118 to flip.

[0058] In an optional embodiment, the air inlet opening and closing device further includes a smoke sensor and a controller.

[0059] The smoke sensor is used to sense the amount of smoke to be adsorbed. When the amount of smoke to be adsorbed is less than the first preset amount, the controller is electrically connected to the drive device 101 to drive the main connecting rod 108 to rotate at the first preset angle, thereby causing the first air guide plate 112 to flip at the second preset angle away from the first air inlet 104, and causing the second air guide plate 118 to move along the first guide portion 122 away from the second air inlet 106.

[0060] When the amount of smoke to be adsorbed is greater than or equal to the first preset amount, the controller is electrically connected to the drive device 101 to drive the main connecting rod 108 to rotate at the third preset angle, causing the first air guide plate 112 to flip at the fourth preset angle away from the first air inlet 104, and causing the second air guide plate 118 to slide along the second guide portion 123 away from the second air inlet 106 and flip relative to the second air inlet 106.

[0061] In this embodiment, during the actual use of the range hood, see... Figure 4 As shown, when the amount of oil smoke detected by the smoke sensor is small, the main connecting rod 108 rotates a small angle under the action of the motor, the first auxiliary connecting rod 109 pushes the first air guide plate 112 to swing a small angle, and the second auxiliary connecting rod 110 drives the second air guide plate 118 to move on the straight guide path formed by the first guide part 122. The opening range of the first air inlet 104 and the second air inlet 106 is small; see also Figure 5 As shown, when the smoke sensor detects a large amount of oil fumes, the main connecting rod 108 rotates at a larger angle, the first auxiliary connecting rod 109 pushes the first air guide plate 112 to swing at a larger angle, and the second auxiliary connecting rod 110 drives the second air guide plate 118 to move on the arc-shaped guide path formed by the second guide part 123. The opening range of the first air inlet 104 and the second air inlet 106 is larger, which can effectively prevent the diffusion problem during the rising process of oil fumes and improve the smoke extraction effect.

[0062] Example 2

[0063] Embodiment 2 of this application provides a range hood that includes the air inlet opening and closing device of any of the above embodiments. Therefore, it has all the beneficial technical effects of the air inlet opening and closing device of any of the above embodiments, which will not be repeated here.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application. In addition, those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are meant to be within the scope of this application and form different embodiments.

Claims

1. An air inlet opening and closing device for a range hood, characterized in that, The air inlet opening and closing device includes a drive device (101), a transmission assembly (102), and an air guide plate; The number of air guide plates is multiple, and the air guide plates are arranged corresponding to the air inlet of the range hood; The drive device (101) is connected to the multiple air guide plates through the transmission assembly (102) to drive the multiple air guide plates to move synchronously, thereby opening or closing the multiple air inlets; The transmission assembly (102) includes a main connecting rod (108) and a first auxiliary connecting rod (109). The number of air inlets is two, one of which is the first air inlet (104), and the air guide plate corresponding to the first air inlet (104) is the first air guide plate (112), one end of the first air guide plate (112) is hinged to the first air inlet (104); One end of the first auxiliary connecting rod (109) is hinged to one end of the main connecting rod (108), and the other end of the first auxiliary connecting rod (109) is hinged to the first air guide plate (112). The driving device (101) drives the main connecting rod (108) to rotate, thereby causing the first air guide plate (112) to flip, thereby opening or closing the first air inlet (104). The transmission assembly (102) also includes a second connecting rod (110). Another air inlet is a second air inlet (106), and the air guide plate corresponding to the second air inlet (106) is a second air guide plate (118); a slide rail (119) is provided inside the housing assembly (103) of the range hood, and the second air guide plate (118) is installed on the slide rail (119); One end of the second auxiliary connecting rod (110) is hinged to the other end of the main connecting rod (108), and the other end of the second auxiliary connecting rod (110) is hinged to the second air guide plate (118). When the driving device (101) drives the main connecting rod (108) to rotate, the second air guide plate (118) moves along the slide rail (119) to approach or move away from the second air inlet (106). The slide rail (119) includes a first guide portion (122) and a second guide portion (123) connected to each other. The first guide section (122) forms a straight guide path so that the second air guide plate (118) translates along the first guide section (122); The second guide portion (123) forms an arc-shaped guide path so that the second air guide plate (118) slides along the second guide portion (123) and flips relative to the second air inlet (106); The arc-shaped guide path is tangent to the straight guide path.

2. The air inlet opening and closing device according to claim 1, characterized in that, The first air guide plate (112) includes a first plate (113), a hinge (114), and a connecting lug (115); The top of the first plate (113) is provided with at least two hinges (114) so ​​that the top of the first plate (113) is hinged to the top of the first air inlet (104); the bottom of the first plate (113) swings away from the range hood to open the first air inlet (104). The inner side of the first plate (113) is provided with a connecting ear (115) to connect the first auxiliary connecting rod (109).

3. The air inlet opening and closing device according to claim 1, characterized in that, The second air guide plate (118) includes a second plate (124), a connecting plate (125), and a slider (127); The second plate (124) is provided with connecting plates (125) at both ends, and the sliders (127) are installed on the connecting plates (125). The slide rail (119) is correspondingly provided with the slider (127), and the slider (127) is slidably mounted on the slide rail (119).

4. The air inlet opening and closing device according to claim 3, characterized in that, The slider (127) includes a fixed block (128) and a plurality of rollers (129) mounted on the fixed block (128). The fixed block (128) is connected to the connecting plate (125), and the rollers (129) are slidably mounted on the slide rail (119).

5. The air inlet opening and closing device according to claim 1, characterized in that, It also includes smoke sensors and controllers; The smoke sensor is used to sense the amount of smoke to be adsorbed. When the amount of smoke to be adsorbed is less than a first preset amount, the controller is electrically connected to the drive device (101) to drive the main connecting rod (108) to rotate by a first preset angle, thereby causing the first air guide plate (112) to flip by a second preset angle away from the first air inlet (104), and causing the second air guide plate (118) to move along the first guide portion (122) away from the second air inlet (106). When the amount of smoke to be adsorbed is greater than or equal to the first preset amount, the controller is electrically connected to the drive device (101) to drive the main connecting rod (108) to rotate at a third preset angle, causing the first air guide plate (112) to flip at a fourth preset angle away from the first air inlet (104), and causing the second air guide plate (118) to slide along the second guide portion (123) away from the second air inlet (106) and flip relative to the second air inlet (106).

6. The air inlet opening and closing device according to claim 1, characterized in that, It also includes a mounting base (107) connected to the housing assembly (103) of the range hood, and the drive device (101) is mounted on the mounting base (107).

7. A range hood, characterized in that, Includes the air inlet opening and closing device as described in any one of claims 1 to 6.

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