Air volume adjusting device and oil smoke pumping and discharging equipment

Abstract

The utility model belongs to the technical field of kitchen appliances, and particularly discloses an air volume adjusting device and oil smoke pumping and discharging equipment. The air volume adjusting device comprises a mounting base, an adjusting baffle and a driving motor, the first end of the adjusting baffle is rotationally mounted on the mounting base, and the driving motor drives the adjusting baffle to rotate between the two air blocking positions; the air volume adjusting device further comprises a limiting assembly, the limiting assembly comprises a first limiting piece and a limiting driving piece, and the limiting driving piece drives the first limiting piece to move so that the first limiting piece can be switched between the limiting position located in the rotating path of the adjusting baffle and the separation position exiting from the rotating path. The adjusting baffle at any wind blocking position can abut against the first limiting piece at the limiting position so that the adjusting baffle can be limited to rotate in the direction facing the other wind blocking position. According to the air volume adjusting device, the adjusting baffle can be prevented from swinging during air intake to influence air intake, and the air intake smoothness and the use reliability of the air volume adjusting device and the oil smoke pumping and discharging equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to an air volume regulating device and an oil fume extraction device. Background Technology

[0002] As people's living standards improve, fume extraction equipment has become an essential kitchen appliance in people's homes, effectively purifying kitchen air and improving the user's cooking experience.

[0003] The prior art provides a fume extraction device including a fume hood, a flow regulating plate, and a drive device for moving the flow regulating plate. When a single stove is in use, the drive device typically moves the flow regulating plate to the side of the stove that is not in use, thereby increasing the airflow on the side where the stove is in use.

[0004] However, when the flow control plate moves to the side of the unused stove, it is tilted relative to the vertical direction. Under the negative pressure of the fan and the pushing force of the airflow, the flow control plate is prone to swinging back to the center position, which affects the normal use of the flow control plate, reduces the smoothness of air intake, and is also prone to generating noise due to the swing of the flow control plate, thus reducing the user experience of the range hood. Utility Model Content

[0005] One of the technical problems solved by this utility model is to provide an airflow regulating device that can effectively solve the problem that existing flow regulating plates tend to swing left and right when they deviate from the relatively central position, which leads to poor air intake and noise.

[0006] The second technical problem solved by this utility model is to provide an oil fume extraction device that can effectively solve the problem that the existing flow regulating plate is prone to left and right swinging when it is deviated from the relatively central position, which leads to poor air intake and noise.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] An airflow regulating device includes a mounting base, an adjusting baffle, and a drive motor. The first end of the adjusting baffle is rotatably mounted on the mounting base, and the drive motor drives the adjusting baffle to rotate between two wind-blocking positions.

[0009] The airflow regulating device further includes a limiting component, which includes a first limiting member and a limiting drive member. The limiting drive member drives the first limiting member to move so that the first limiting member can switch between a limiting position on the rotation path of the regulating baffle and a separation position away from the rotation path. The regulating baffle in either of the windproof positions can abut against the first limiting member in the limiting position to restrict the regulating baffle from rotating in the direction toward the other windproof position.

[0010] Compared with the prior art, the airflow regulating device of this utility model has the following advantages: By driving the regulating baffle to rotate via a drive motor, automated control of the regulating baffle can be achieved. Specifically, the controller can control the rotation of the regulating baffle according to the flue gas condition or the usage status of the gas stove, thereby controlling the volume of the left and right air inlet chambers and adjusting the airflow of the two chambers to match the amount of oil fumes, thus improving the reliability of the oil fume extraction equipment. Furthermore, by setting a limiting component to restrict the regulating baffle from rotating towards another windward position, the impact of the airflow and the negative pressure of the fan can be avoided, preventing the regulating baffle from rotating towards another windward position due to the impact of the airflow and the negative pressure of the fan. To address the issue of reduced windproofing effect caused by directional rotation, this design ensures the adjustable baffle remains stably positioned in the windproof location during fume extraction, improving the smoothness of fume extraction and preventing excessive noise and airflow resistance caused by baffle wobbling. Furthermore, since the first limiting component can switch between a limiting position and a disengaged position, it can be switched to the disengaged position, exiting the baffle's movement path, when the adjustable baffle is rotated, thus preventing the first limiting component from affecting the normal rotation of the adjustable baffle. Additionally, the first limiting component in the limiting position can abut against any adjustable baffle in the windproof position, reducing the number of components in the airflow adjustment device and lowering costs.

[0011] In one embodiment, two position detection elements are installed on the mounting base, and the two position detection elements are set one-to-one with the two windproof positions. The position detection elements are used to detect whether the adjusting baffle is rotated to the corresponding windproof position.

[0012] In one embodiment, the adjusting baffle includes a wind deflector and two stops, which are spaced apart from the wind deflector around the rotation axis of the adjusting baffle. When the adjusting baffle is in any of the wind deflector positions, one of the stops triggers the corresponding position detection element, and the other stop can abut against the first limiting element in the limiting position.

[0013] In one embodiment, the two position detection elements are symmetrically arranged with respect to a plane of symmetry about the axis of rotation of the adjusting baffle, the plane of symmetry passing through the first limiting element.

[0014] In one embodiment, the adjusting baffle includes a rotating mounting member, which is detachably connected to the first end of the baffle. The rotating mounting member has the stop portion and a rotating shaft hole, in which the motor shaft of the drive motor is fixedly inserted.

[0015] In one embodiment, the rotating mounting component includes a connecting sleeve portion and a connecting plate portion. The connecting plate portion and two stop portions are spaced apart circumferentially along the connecting sleeve portion and are connected at one end to the connecting sleeve portion, while the other end extends radially along the connecting sleeve portion. The inner hole of the connecting sleeve portion is the rotating shaft hole, and the connecting plate portion extends in the same direction and is connected to the wind deflector.

[0016] In one embodiment, the wind deflector includes a main wind deflector section and a connecting section connected to one end of the main wind deflector section. Along the rotation axis of the adjusting baffle, the width of the connecting section is smaller than the width of the main wind deflector section, and the connecting section is detachably connected to the rotating mounting member.

[0017] In one embodiment, the adjusting baffle has a pivot hole, the motor shaft of the drive motor passes through the pivot hole, a rotating bearing is sleeved on the motor shaft, and the rotating bearing and the mounting base are respectively located on opposite sides of the adjusting baffle along the rotation axis.

[0018] In one embodiment, the limiting component includes an electromagnetic lock, the locking bar of the electromagnetic lock being a first limiting member, wherein when the first limiting member is in the separated position, the limiting component is concealed within the mounting base, and when the first limiting member is in the limiting position, the first limiting member partially extends out of the mounting base.

[0019] In one embodiment, the adjusting baffle and the position detection element are both mounted on the outside of one side of the mounting base, and the drive motor and at least part of the limiting component are mounted inside the mounting base.

[0020] In one embodiment, the airflow regulating device further includes a second limiting member, which is configured to correspond one-to-one with the windbreak position, and the second limiting member restricts the regulating baffle at the windbreak position from rotating in a direction away from the other windbreak position.

[0021] In one embodiment, the position detection element includes a micro switch having a housing and a contact portion located outside the housing, one end of the contact portion being mounted to the housing, and a second end of the contact portion being able to approach the housing to switch the position detection element to a triggered state, wherein a second limiting member is at least partially inserted between the second end of the contact portion and the housing.

[0022] The second technical problem mentioned above is solved by the following technical solution:

[0023] An oil fume extraction device, comprising:

[0024] The fume hood has a smoke collection chamber, an air inlet communicating with the smoke collection chamber, and an air outlet communicating with the smoke collection chamber;

[0025] As described above, the air volume regulating device is installed inside the smoke collection chamber. The mounting base is located near the air inlet and in the middle of the smoke collection chamber in the left-right direction. The second end of the regulating baffle extends towards the air outlet. The drive motor drives the regulating baffle to swing left and right to divide the smoke collection chamber into two variable volume air inlet chambers, and at least one of the air inlet chambers is connected to the air outlet.

[0026] Compared with the prior art, the fume extraction device of this utility model has the following advantages: by adopting the above-mentioned air volume adjustment device, the fume extraction performance of the fume extraction device when used on a single-sided stove can be increased, the airflow smoothness during single-sided extraction can be improved, the noise caused by the swing of the adjustment baffle can be reduced, and the user experience of the fume extraction device can be improved. Attached Figure Description

[0027] Figure 1 A schematic diagram of the structure of the fume extraction device provided in this embodiment of the utility model;

[0028] Figure 2 A schematic diagram showing the disassembled structure of the smoke hood provided in an embodiment of this utility model;

[0029] Figure 3 A partial structural diagram of the fume extraction device provided in this embodiment of the present utility model when the adjusting baffle is in the middle position;

[0030] Figure 4 A partial structural diagram of the fume extraction device provided in this embodiment of the present invention with the adjusting baffle in the left windproof position;

[0031] Figure 5 A partial structural diagram of the fume extraction device provided in this embodiment of the present utility model when it is in the right windproof position;

[0032] Figure 6 A schematic diagram of the air volume regulating device provided in this embodiment of the present invention when the regulating baffle is in the middle position;

[0033] Figure 7 A schematic diagram of the airflow regulating device provided in this embodiment of the utility model when the regulating baffle is in the left windproof position;

[0034] Figure 8 A schematic diagram of the airflow regulating device provided in this embodiment of the utility model when the regulating baffle is in the right windproof position;

[0035] Figure 9 A schematic diagram showing the disassembled structure of the air volume regulating device provided in this embodiment of the utility model;

[0036] Figure 10 A schematic diagram of the air volume regulating device provided in this embodiment of the utility model without the main shell.

[0037] Label Explanation:

[0038] 100. Air volume regulating device; 200. Fume hood; 201. Hood body; 2011. Smoke collection chamber; 2012. Air inlet; 2013. Air outlet; 2014. Opening; 2015. Front panel; 202. Smoke guide plate; 203. Inspection plate; 300. Fan module;

[0039] 1. Adjusting baffle; 11. Wind deflector; 111. Main wind deflector section; 112. Connecting section; 1121. Clamping plate section; 12. Rotating mounting part; 121. Connecting sleeve section; 122. Stop section; 123. Connecting plate section;

[0040] 2. Limiting component; 21. First limiting element; 22. Limiting drive element;

[0041] 3. Mounting base; 31. Shell body; 311. Mounting plate; 3111. Mounting shaft hole; 3112. Notch; 3113. Clearance hole; 3114. Wire hole; 32. Bottom shell; 321. Bottom plate; 322. Connecting edge; 323. Positioning edge;

[0042] 4. Drive motor; 41. Motor shaft; 5. Position detection component; 5a. Left position detection component; 5b. Right position detection component; 51. Housing; 52. Contact plate; 6. Second limiting component; 6a. Left limiting component; 6b. Right limiting component; 7. Rotary bearing; 71. Fixing plate. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. 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.

[0044] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0045] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0046] 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.

[0047] This embodiment provides an oil fume extraction device that can extract oil fumes while adjusting the air intake volume of the air inlet 2012 on the left and right sides according to the user's usage of the left and right stoves, thereby improving the oil fume extraction effect and enhancing the stability and reliability of the air volume adjustment.

[0048] like Figures 1 to 6 As shown, the fume extraction equipment includes a fume collection device, a fan module 300, and a controller. The fume collection device includes a fume hood 200, which has a fume collection chamber 2011, an air inlet 2012 communicating with the fume collection chamber 2011, and an air outlet 2013 communicating with the fume collection chamber 2011. The fan module 300 is installed outside the fume collection device and includes a fan. The fan inlet is connected to the air outlet 2013, and the fan operation can create a negative pressure at the air inlet 2012, allowing external fumes to be discharged sequentially through the air inlet 2012, the fume collection chamber 2011, the air outlet 2013, and the fan. The controller is communicatively connected to the fan module 300 to control the operation of the fan.

[0049] The smoke collection device also includes an airflow regulating device 100, which is installed inside the smoke collection chamber 2011 and includes a mounting base 3, an adjusting baffle 1, and a drive motor 4. The first end of the adjusting baffle 1 is rotatably mounted on the mounting base 3, and the drive motor 4 drives the adjusting baffle 1 to rotate between two windproof positions. The airflow regulating device 100 also includes a limiting component 2, which includes a first limiting member 21 and a limiting drive member 22. The limiting drive member 22 drives the first limiting member 21 to move so that the first limiting member 21 can switch between a limiting position on the rotation path of the adjusting baffle 1 and a separation position away from the rotation path. The adjusting baffle 1 in either windproof position can abut against the first limiting member 21 in the limiting position to restrict the adjusting baffle 1 from rotating in the direction toward the other windproof position.

[0050] Mounting base 3 is positioned near air inlet 2012 and at the center of smoke collection chamber 2011 along the left-right direction. The second end of adjusting baffle 1 extends towards air outlet 2013. Drive motor 4 drives adjusting baffle 1 to swing left and right, dividing smoke collection chamber 2011 into two variable-volume air inlet chambers, at least one of which is connected to air outlet 2013. Drive motor 4 and limit assembly 2 are both communicatively connected to controller.

[0051] The airflow regulating device 100 provided in this embodiment drives the regulating baffle 1 to rotate via a drive motor 4. The drive motor 4 is communicatively connected to the controller of the fume extraction equipment, enabling automated control of the regulating baffle 1. Specifically, the controller can control the rotation of the regulating baffle 1 according to the flue gas status or the usage status of the gas stove, thereby controlling the volume of the left and right air inlet chambers and adjusting the airflow rate of the two chambers to match the amount of fume, thus improving the reliability of the fume extraction equipment. By setting a limit component 2 to restrict the regulating baffle 1 from rotating in the direction towards the other windward position, the rotation of the regulating baffle 1 towards the other windward position can be prevented from being impacted by the airflow and negative pressure from the fan. To address the issue of reduced wind deflection due to rotation, this device ensures that the adjusting baffle 1 remains stably positioned in the wind deflection position during fume extraction, improving the smoothness of fume extraction and preventing excessive noise and airflow resistance caused by the adjusting baffle 1 wobbling. Furthermore, since the first limiting member 21 can switch between a limiting position and a separating position, when the adjusting baffle 1 is rotated, the first limiting member 21 can be switched to the separating position, thus preventing the adjusting baffle 1 from being affected by its setting. Moreover, the first limiting member 21 in the limiting position can abut against any adjusting baffle 1 in the wind deflection position, reducing the number of components in the airflow regulating device 100 and lowering costs.

[0052] For ease of description, the two windproof positions will be referred to as the left windproof position and the right windproof position, respectively. Specifically, the smoke collection chamber 2011 has two side chamber walls arranged opposite each other in the left-right direction. The adjusting baffle 1 is in the left windproof position when its second end is near the left side chamber wall of the smoke collection chamber 2011, and in the right windproof position when its second end is near the right side chamber wall of the smoke collection chamber 2011. The adjusting baffle 1 rotates between the left and right windproof positions. The air inlet chamber located between the left side chamber wall and the adjusting baffle 1 is the left air inlet chamber, and the air inlet chamber located between the right side chamber wall and the adjusting baffle 1 is the right air inlet chamber.

[0053] The adjusting baffle 1 also has a middle position located exactly between the two wind-blocking positions. When the adjusting baffle 1 is in the middle position, it is vertically arranged, and the two air inlet chambers are symmetrically arranged on the left and right sides relative to the adjusting baffle 1 to ensure that the air inlet flow of the two air inlet chambers is the same. In one embodiment, when the adjusting baffle 1 is in the middle position, the second end of the adjusting baffle 1 extends to the air outlet 2013 to ensure smooth flue gas flow and better achieve separation of air inlets on both sides.

[0054] When both stoves are in use, the adjusting baffle 1 is in the middle position so that the negative pressure of the air inlets 2012 corresponding to the air inlet chambers on both sides is approximately the same, ensuring the exhaust performance of both stoves. When the left stove is in use, the adjusting baffle 1 is in the right windproof position so that the volume of the left air inlet chamber is greater than that of the right air inlet chamber, and the negative pressure generated by the fan is mainly concentrated at the air inlet 2012 corresponding to the left air inlet chamber. When the right stove is in use, the adjusting baffle 1 is in the left windproof position so that the volume of the right air inlet chamber is greater than that of the left air inlet chamber, and the negative pressure generated by the fan is mainly concentrated at the air inlet 2012 corresponding to the right chamber.

[0055] Understandably, when both stoves are in use, the adjusting baffle 1 can be rotated to a position between the middle and the first wind position according to the amount of oil fumes generated by the stoves on both sides. This allows the airflow of the air intake chambers on both sides to be adapted to the different oil fume generation conditions of the stoves on both sides, thus better ensuring the performance of oil fume extraction.

[0056] In one embodiment, the fume extraction device is a range hood. The fan module 300 is installed on the top of the fume collection device. The fume collection chamber 2011 has an air inlet 2012 on its lower side and an air outlet 2013 on its upper side. That is, the lower end of the adjusting baffle 1 is rotatably mounted on the fume collection hood 200, and the upper end has multiple ventilation holes. The range hood can be, but is not limited to, a side-suction range hood, a top-suction range hood, a top-and-side dual-suction range hood, or a central island range hood.

[0057] In other embodiments, the fume extraction device is an integrated stove, the fume collection device forms the range hood head of the integrated stove, and the fan module 300 is installed below the fume collection device. That is, the upper side of the fume collection chamber 2011 is provided with an air inlet 2012 and the lower side has an air outlet 2013, the upper end of the adjusting baffle 1 is rotatably installed on the fume hood 200 and the lower end has a ventilation hole.

[0058] In one embodiment, the fume hood 200 includes a hood body 201 and a smoke guide plate 202. The hood body 201 has a smoke collection chamber 2011 inside, and an air inlet 2012 communicating with the smoke collection chamber 2011 is opened on the lower front side of the hood body 201. The smoke guide plate 202 is disposed on the front side of the hood body 201 and is located above the air inlet 2012. Further, an opening 2014 is provided on the front side of the hood body 201. The opening 2014 and the air inlet 2012 are arranged at intervals in the vertical direction. The smoke guide plate 202 covers the opening 2014. The downstream part of the smoke collection chamber 2011 and the second end of the adjusting baffle 1 are disposed corresponding to the opening 2014. Therefore, after the smoke guide plate 202 is disassembled, the upper part of the smoke collection chamber 2011 and the second end of the adjusting baffle 1 are exposed through the opening 2014, which facilitates the cleaning of the smoke collection chamber 2011 and the adjusting baffle 1. The opening 2014 and the air inlet 2012 are spaced apart in the vertical direction, so that the front side of the cover 201 has a front plate 2015 between the opening 2014 and the inlet. The front plate 2015 helps to improve the installation convenience and stability of the smoke guide plate 202 on the cover 201.

[0059] In one embodiment, a maintenance port is provided on the front panel 2015, and a maintenance plate 203 is provided at the maintenance port and detachably connected to the front panel 2015. A mounting base 3 is positioned opposite the maintenance plate 203, and the mounting base 3 is connected to the cover 201 and / or the maintenance plate 203. This arrangement allows for the disassembly and maintenance of the airflow regulating device 100 by removing the maintenance plate 203, improving the convenience of disassembly and maintenance of the airflow regulating device 100.

[0060] like Figures 6 to 9 As shown, to further improve the reliability and adjustment accuracy of the airflow regulating device 100, in one embodiment, the airflow regulating device 100 further includes two position detection elements 5. The two position detection elements 5 are installed on the mounting base 3 and are set one-to-one with the two windproof positions. The position detection elements 5 detect whether the regulating baffle 1 has rotated to the corresponding windproof position. The position detection elements 5 are communicatively connected to the controller.

[0061] In the initial state, the first limiting member 21 is in the separated position, and the drive motor 4 runs to control the rotation of the adjusting baffle 1. When the adjusting baffle 1 rotates to one of the windproof positions, the adjusting baffle 1 triggers the corresponding position detection member 5, causing the position detection member 5 to send a trigger signal to the controller. After receiving the trigger signal, the controller controls the drive motor 4 to stop running and simultaneously controls the limiting member 2 to move, so that the first limiting member 21 switches to the limiting position. By setting the position detection member 5, the position of the adjusting baffle 1 can be judged more accurately, thereby controlling the stopping time of the drive motor 4, effectively preventing the adjusting baffle 1 from rotating beyond the windproof position, and improving the operational reliability and control accuracy of the airflow regulating device 100.

[0062] In other embodiments, other detection methods can be used to determine whether the adjusting baffle 1 has reached the windproof position. For example, a Hall sensor can be used to detect the angle of rotation of the motor shaft 41 of the drive motor 4 from the initial position, thereby determining whether the adjusting baffle 1 has rotated to the correct position.

[0063] In one embodiment, the airflow regulating device 100 further includes a second limiting member 6, which is configured to correspond one-to-one with the windproof position. The second limiting member 6 restricts the regulating baffle 1 in the windproof position from rotating in a direction away from another windproof position. Thus, through the cooperation of the second limiting member 6 and the limiting component 2, the regulating baffle 1 is stably restricted to the windproof position, preventing the driving motor 4 from continuing to run due to detection errors or other reasons, which could cause the regulating baffle 1 to rotate beyond the windproof position, thereby further improving the reliability of the airflow regulating device 100.

[0064] To simplify the structure, the adjusting baffle 1 includes a baffle plate 11 and two stop parts 122. The two stop parts 122 and the baffle plate 11 are spaced apart around the rotation axis of the adjusting baffle 1. When the adjusting baffle 1 is in any windproof position, one stop part 122 triggers the corresponding position detection element 5, and the other stop part 122 can abut against the first limiting element 21 in the limiting position. Thus, detection and limiting can be achieved simultaneously through the cooperation of the two stop parts 122 with the position detection element 5 and the first limiting element 21. That is, one stop part 122 cooperates with the position detection element 5 to perform position detection when the adjusting baffle 1 is in one windproof position, and cooperates with the first limiting element 21 to achieve limiting when the adjusting baffle 1 is in another windproof position, improving the versatility of the structure, effectively simplifying the structure of the air volume regulating device 100, and reducing costs.

[0065] For ease of subsequent description, the position detection component 5 corresponding to the left windshield position is referred to as the left position detection component 5a, and the position detection component 5 corresponding to the right windshield position is referred to as the right position detection component 5b; the second limiting component 6 corresponding to the left windshield position is referred to as the left limiting component 6a, and the second limiting component 6 corresponding to the right windshield position is referred to as the right limiting component 6b.

[0066] In one embodiment, the position detection element 5 includes a micro switch, which includes a housing 51 and a contact portion 52 disposed on the outside of the housing 51. One end of the contact portion 52 is connected to the housing 51, and the other end can be pressed close to the housing 51 to switch the position detection element 5 to a triggered state. When the adjusting baffle 1 is rotated to the windproof position, the adjusting baffle 1 presses against the contact portion 52, so that the contact portion 52 is close to the housing 51, thereby switching the position detection element 5 to the triggered state; when the adjusting baffle 1 is moved away from the windproof position, the adjusting baffle 1 separates from the contact portion 52, so that the contact portion 52 can automatically return to the non-triggered state under its own elastic action or under the action of the reset structure provided in the position detection element 5. The use of contact detection can ensure detection accuracy. In other embodiments, the position detection element 5 can also be a non-contact detection element, such as a photoelectric sensor.

[0067] In one embodiment, the second limiting member 6 is at least partially inserted between the second end of the contact piece 52 and the housing 51, thereby ensuring that the setting of the second limiting member 6 does not interfere with the pressing of the adjusting baffle 1 against the contact piece 52. At the same time, it can also improve the compactness of the structure layout on the mounting base 3, reduce the footprint of the air volume regulating device 100, and thus reduce the impact of the setting of the air volume regulating device 100 on the overall air intake resistance. At the same time, this setting also helps to avoid the adjusting baffle 1 from colliding with the housing 51 and causing damage to the position detection member 5, thereby improving the safety and reliability of the position detection member 5.

[0068] In one embodiment, the second limiting member 6 is a plate-like structure protruding from the mounting base 3 to reduce the space occupied by the second limiting member 6. In other embodiments, the second limiting member 6 may also be a block-like structure or a rod-like structure, etc.

[0069] Furthermore, the mounting base 3 is a shell structure, with the drive motor 4 installed inside the mounting base 3. The adjusting baffle 1, the position detection element 5, and the second limiting element 6 are all located outside the mounting base 3. This reduces the footprint of the mounting base 3 while facilitating the cooperation between the position detection element 5, the second limiting element 6, and the adjusting baffle 1, and also improves the ease of disassembly and assembly of the adjusting baffle 1. Moreover, this arrangement avoids the problem of poor internal heat dissipation caused by the accumulation of structures inside the mounting base 3, thus improving the reliability of the starter motor. Specifically, the mounting base 3 has a mounting plate portion 311 and a bottom plate portion 321 arranged opposite to each other. The bottom plate portion 321 is located near the rear cavity wall of the smoke collection chamber 2011, and the adjusting baffle 1 and the position detection element 5 are installed on the outside of the mounting plate portion 311.

[0070] In one embodiment, the second limiting member 6 is formed by stamping and cutting the mounting base 3, that is, a notch 3112 is stamped into the mounting plate, and one side of the second limiting member 6 is connected to the edge of the notch 3112. This simplifies the processing and assembly of the second limiting member 6, thereby simplifying the structure of the air volume regulating device 100. In other embodiments, the second limiting member 6 and the mounting base 3 can also be separately provided and installed on the mounting base 3 by welding or detachable connection.

[0071] Furthermore, the connecting wire of the position detection component 5 extends into the interior of the mounting base 3 through the notch 3112 to hide the connecting wire, thereby preventing the connecting wire from getting tangled with the adjusting baffle 1 when it rotates, improving the safety of the air volume regulating device 100, reducing the pollution of the connecting wire by oil fumes, and further improving the structural compactness of the air volume regulating device 100. Moreover, the notch 3112 also facilitates heat dissipation in the interior space of the mounting base 3, which helps to ensure the operational reliability of the drive motor 4.

[0072] In one embodiment, a wire through hole is provided on the side wall of the mounting base 3. The connecting wires of the drive motor 4 and the position detection component 5 pass through the wire through hole 3114 and communicate with the controller to improve the neatness of the wiring.

[0073] In one embodiment, to reduce the processing difficulty of the adjusting baffle 1, the adjusting baffle 1 includes a rotating mounting member 12, which is detachably connected to the first end of the baffle plate 11. The rotating mounting member 12 has a stop portion 122 and a shaft hole, in which the motor shaft 41 of the drive motor 4 is fixedly inserted. By providing the rotating mounting member 12 and detachably connecting it to the baffle plate 11, the rotating mounting member 12 and the baffle plate 11 can be processed separately, reducing the processing difficulty of the adjusting baffle 1 and facilitating the individual replacement of the baffle plate 11 and the rotating mounting member 12, making the rotating mounting member 12 versatile and reducing processing costs. Simultaneously, by providing the shaft hole on the rotating mounting member 12, it is also beneficial to assemble the adjusting baffle 1 with the drive motor 4. In other embodiments, the rotating mounting member 12 can also be integrally formed with or welded to the baffle portion.

[0074] The rotating mounting component 12 includes a connecting sleeve portion 121 and a connecting plate portion 123. The connecting plate portion 123 and two stop portions 122 are spaced apart circumferentially along the connecting sleeve portion 121, with one end connected to the connecting sleeve portion 121 and the other end extending radially along the connecting sleeve portion 121. The connecting sleeve portion 121 is detachably connected to the first end of the baffle plate 11, and the inner hole of the connecting sleeve portion 121 forms a rotating shaft hole. The arrangement of the connecting sleeve portion 121 facilitates the installation of the adjusting baffle plate 1 and the motor shaft 41; at the same time, the circumferential spacing of the connecting plate portion 123 and the two stop portions 122 along the connecting sleeve portion 121 also helps to prevent interference between the baffle plate 11 and the position detection component 5.

[0075] In one embodiment, one position detection element 5 is located between the wind deflector 11 and a stop portion 122, and another position detection element 5 is located between the wind deflector 11 and another stop portion 122, i.e., the two stop portions 122 are located between the two position detection elements 5. The included angle between each stop portion 122 and the wind deflector 11 is an obtuse angle, thereby reducing the probability of interference between the wind deflector 11 and the position detection element 5. The two stop portions 122 are symmetrically arranged relative to the wind deflector 11 to improve control accuracy.

[0076] In one embodiment, the two position detection elements 5 are symmetrically arranged with respect to a symmetrical plane passing through the rotation axis of the adjusting baffle 1, so as to ensure that the two windproof positions are symmetrically arranged with respect to the symmetrical plane and to ensure the adjustment accuracy of the air volume regulating device 100. That is, when the adjusting baffle 1 rotates from the middle position to the two windproof positions, the adjusting baffle 1 rotates by the same angle. When the adjusting baffle 1 is in the middle position, the symmetrical plane passes through the windproof plate 11, and the two stop parts 122 are symmetrically arranged with respect to the symmetrical plane.

[0077] In one embodiment, the wind deflector 11 includes a main wind deflector section 111 and a connecting section 112. One end of the main wind deflector section 111 along its length is connected to the connecting section 112. In the direction of the rotation axis of the adjusting baffle 1, the width of the main wind deflector section 111 is greater than the width of the connecting section 112, so that the main wind deflector section 111 and the connecting plate together form a clearance notch 3112 to avoid the mounting base 3. This ensures that the connecting section 112 is located on the side of the mounting plate section 311 away from the bottom plate section 321, while the main wind deflector section 111 and the mounting base 3 partially overlap in the direction of the rotation axis of the adjusting baffle 1, improving the structural compactness and facilitating the installation of the air volume regulating device 100 in the smoke collection chamber 2011. Specifically, the mounting plate section 311 has a mounting shaft hole 3111, and the connecting sleeve section 121 rotatably passes through the mounting shaft hole 3111 and is connected to the output shaft of the drive motor 4.

[0078] The connecting portion 112 includes two opposing and spaced-apart clamping portions 1121, with a connecting plate portion 123 sandwiched between the two clamping portions 1121. The windbreak plate 11 and the rotating mounting member 12 are detachably connected by fasteners passing through the connecting plate portion 123 and the two clamping portions 1121, ensuring the stability of the connection between the connecting portion 112 and the connecting plate portion 123 and reducing the probability of the adjusting baffle 1 breaking under stress. In other embodiments, the connecting portion 112 can be a plate-like structure, and the connecting portion 112 and the connecting plate portion 123 are fitted together and fastened.

[0079] To improve the smoothness of the rotation of the regulating baffle 1, in one embodiment, the air volume regulating device 100 further includes a rotary bearing 7. One end of the connecting sleeve 121 is rotatably mounted on the mounting base 3, and the second end of the connecting sleeve 121 is fitted with the rotary bearing 7. The outer ring of the rotary bearing 7 is fixed to the fume hood 200. This allows both ends of the connecting sleeve 121 to be supported, improving the stability and reliability of the regulating baffle 1. At the same time, the rotary bearing 7 improves the smoothness of the rotation of the regulating baffle 1, thereby improving the control accuracy of the regulating baffle 1.

[0080] In one embodiment, a fixing plate portion 71 extends outward from the side of the rotating bearing 7 away from the mounting base 3. The fixing plate portion 71 is detachably connected to the smoke hood 200 to improve the convenience of connecting the rotating bearing 7 to the smoke hood 200.

[0081] like Figure 9 and Figure 10 As shown, the mounting base 3 includes a bottom shell 32 and a main shell 31. The main shell 31 has a cavity with an opening on one side. The bottom shell 32 is detachably installed at the opening of the main shell 31 and closes the opening of the cavity. The main shell 31 and the bottom shell 32 together form a mounting cavity. The drive motor 4 is installed in the mounting cavity, and the side plate opposite to the bottom shell 32 forms a mounting plate portion 311. This arrangement improves the ease of installation and removal of the drive motor 4 within the mounting base 3, and also improves the ease of installation, removal, and maintenance of the mounting base 3. At the same time, installing the position detection element 5 and the adjustment baffle 1 on the main shell 31 helps to ensure the installation stability and reliability of the position detection element 5 and the adjustment baffle 1.

[0082] In one embodiment, the bottom shell 32 includes the aforementioned bottom plate portion 321 and connecting edges 322 connected to opposite sides of the bottom plate portion 321. The connecting edges 322 are further away from the mounting plate portion 311 relative to the bottom plate portion 321, thereby connecting the bottom plate portion 321 and the connecting edges 322 to form a U-shaped structure. The drive motor 4 and the limiting component 2 are mounted on the bottom plate portion 321, and the connecting plate portion 123 is fastened to the cavity wall of the smoke collection chamber 2011. This arrangement can prevent the fastening structure between the drive motor 4 and the bottom plate portion 321 from interfering with the fastening of the bottom shell 32 within the smoke collection chamber 2011.

[0083] To improve the assembly reliability of the bottom shell 32 and the shell body 31, in one embodiment, positioning edges 323 are connected to opposite sides of the bottom shell 32. The positioning edges 323 extend in the direction toward the shell body 31, and the two positioning edges 323 respectively abut against the opposite inner sidewalls of the shell body 31 to achieve assembly positioning of the shell body 31 and the bottom shell 32, and better ensure the sealing after assembly. In one embodiment, the positioning edges 323 are connected to the side of the connecting edge 322 away from the bottom plate portion 321.

[0084] Furthermore, a first mounting hole is provided on the positioning edge 323, and a second mounting hole is provided on the shell body 31. The first mounting hole and the second mounting hole are provided in a one-to-one correspondence, and the positioning edge 323 and the shell body 31 are fastened by fasteners passing through the first mounting hole and the second mounting hole.

[0085] In one embodiment, the extending direction of the first limiting member 21 is the same as the extending direction of the rotation axis of the adjusting baffle 1. The first limiting member 21 can slide relative to the mounting base 3 along its extending direction, so that the first limiting member 21 can slide between a limiting position and a separating position. When the first limiting member 21 is in the limiting position, the first end of the first limiting member 21 extends out of the mounting base 3 and can abut against the stop part 122; when the first limiting member 21 is in the separating position, the limiting component 2 is hidden inside the mounting base 3 to avoid the first limiting member 21 interfering with the normal rotation of the adjusting baffle 1. Specifically, the mounting plate part 311 is provided with an avoidance through hole 3113, and the first limiting member 21 slides through the avoidance through hole 3113.

[0086] The limiting component 2 includes a limiting drive member 22, which generates a magnetic force when energized to drive the first limiting member 21 to slide into the limiting component 2, and the first limiting member 21 can return to the separated position when the limiting drive member 22 is de-energized. Furthermore, the limiting component 2 includes an elastic member, which applies an elastic force to the first limiting member 21 to maintain or return it to the separated position, thereby ensuring the reliability of the reset of the first limiting member 21.

[0087] In one embodiment, the limiting component 2 is an electromagnetic lock, and the first limiting member 21 is the locking rod of the electromagnetic lock. This type of limiting component 2 has a mature structure, a high degree of modularity, and reduces the footprint. In other embodiments, the limiting drive member 22 can be any other structure capable of moving the first limiting member 21 between the limiting position and the separation position. For example, the limiting component 2 can be, but is not limited to, a push rod motor, or the motor can use other transmission structures to drive the first limiting member 21 to linear motion.

[0088] This embodiment also provides a control method for an oil fume extraction device, which is used to control the aforementioned oil fume extraction device. The control method includes:

[0089] When the single-sided exhaust condition is met, the control baffle 1 is rotated to the corresponding windproof position, and the first limit member 21 is switched to the limit position.

[0090] The control method provided in this embodiment allows the adjusting baffle 1 to be rotated to the windproof position on the corresponding side when unilateral exhaust is required. This enhances the negative pressure above the stove on the used side, improves the exhaust performance of the oil fume at the stove on the used side, and reduces the loss of wind energy. At the same time, by controlling the first limiting member 21 to the limiting position, the adjusting baffle 1 can be prevented from swinging under the action of airflow and negative pressure, improving the stability and reliability of the adjusting baffle 1 when blocking the wind, avoiding noise caused by the swinging of the adjusting baffle 1, and improving the user experience of the oil fume exhaust equipment.

[0091] In one embodiment, the stove is determined to be in single-sided or double-sided use mode by detecting whether the user touches a preset button on the display panel. When the stove is in single-sided use mode, the single-sided exhaust condition is met. Specifically, the preset button may include a left-side-only use button and a right-side-only use button. When the user touches the left-side use button, the single-sided exhaust condition is met, and the adjusting baffle 1 is controlled to rotate to the corresponding windproof position on the left. When the user touches the right-side use button, the single-sided exhaust condition is met, and the adjusting baffle 1 is controlled to rotate to the corresponding windproof position on the right.

[0092] In one embodiment, the stove's single-sided or double-sided use is determined by detecting whether it is ignited. When the stove is in single-sided use, the single-sided exhaust condition is deemed met. Specifically, the stove's temperature can be detected by a temperature sensor installed on the stove, or the ignition feedback from the ignition needle can determine whether the stove is in use, or an infrared temperature sensor installed on the fume hood 200 can detect whether the stove is ignited. In other words, any existing means of determining whether the stove is in single-sided or double-sided use can be applied to this invention, and this invention does not limit or elaborate on these methods.

[0093] In another embodiment, the amount of oil fume above the left and right stovetops can be detected by oil fume detection sensors to determine whether the single-sided extraction condition is met. Specifically, when the oil fume extraction equipment is initially started, the control baffle 1 is in the middle position, and oil fume detection devices are installed above the two stovetops respectively. When the deviation of the amount of oil fume detected by the two oil fume detection devices is greater than a preset deviation value, or when the amount of oil fume detected by one of the oil fume detection devices is less than the preset amount of oil fume, it is determined that the single-sided extraction condition is met.

[0094] In one embodiment, the control method further includes: determining whether the position detection element 5 is triggered; if so, controlling the drive motor 4 to stop running and controlling the limit component 2 to move so that the first limit element 21 switches to the limit position.

[0095] Specifically, when the position detection element 5 detects that the adjusting baffle 1 has rotated to the corresponding windproof position, the position detection element 5 sends a trigger signal to the controller; after receiving the trigger signal, the controller controls the drive motor 4 to stop running and controls the limit component 2 to move so that the first limit component 21 switches to the limit position.

[0096] In one embodiment, the control method further includes: controlling the drive motor 4 to stop running when the current of the drive motor 4 is greater than or equal to a preset current value.

[0097] When the starting current of the motor is greater than or equal to the preset current value, it indicates that the drive motor 4 is stalled. The adjusting baffle 1 encounters an obstacle during rotation. After determining that the drive motor 4 is stalled, the drive motor 4 is controlled to stop running. This can avoid overheating damage caused by the continuous operation of the drive motor 4 when it is stalled, and improve the reliability of the drive motor 4 and the air volume regulating device 100.

[0098] Specifically, in the embodiment including the second limiting member 6, when the adjusting baffle 1 abuts against the second limiting member 6, if the position detection member 5 is damaged due to a fault or other reasons, the current value of the drive motor 4 can be monitored to control the drive motor 4 to stop in time.

[0099] In one embodiment, the control method further includes: when the adjusting baffle 1 is in the windproof position and the conditions for exiting the single-sided exhaust are met, controlling the limiting component 2 to move so that the first limiting member 21 switches to the separation position;

[0100] After the first limiting member 21 switches to the separation position, the control adjustment baffle 1 is rotated to the middle position located exactly between the two windproof positions.

[0101] This design allows the control baffle 1 to rotate smoothly back to the middle position when unilateral exhaust is not required, thus facilitating subsequent fume extraction and improving the reliability and convenience of the fume extraction equipment.

[0102] In one embodiment, the control method further includes:

[0103] When the dual-sided exhaust conditions are met, the control baffle 1 is positioned in the middle of the two windproof positions so that the left and right air inlet chambers are identical.

[0104] The amount of oil fume in the left and right air intake chambers is detected, and the deflection angle of the baffle 1 relative to the middle position is controlled according to the detected amount of oil fume in the left and right air intake chambers.

[0105] In other words, this design allows for adjustment of the baffle 1 based on the amount of oil fumes in the air intake chambers on both sides when both stovetops are in use. Specifically, when the difference in oil fume volume between the two sides is small, the baffle 1 is kept in the middle position. When the oil fume volume on the left is larger than that on the right, the baffle 1 is deflected to the right to increase the airflow in the left air intake chamber. Conversely, when the oil fume volume on the right is larger than that on the left, the baffle 1 is deflected to the left to increase the airflow in the right chamber, thus effectively improving the oil fume extraction. The difference in oil fume volume between the two sides can be used to control the deflection angle of the baffle 1 relative to the middle position; that is, the greater the difference in oil fume volume, the greater the deflection angle.

[0106] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0107] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An airflow regulating device, characterized in that, The air volume regulating device includes a mounting base (3), an adjusting baffle (1) and a drive motor (4). The first end of the adjusting baffle (1) is rotatably mounted on the mounting base (3), and the drive motor (4) drives the adjusting baffle (1) to rotate between two windproof positions. The airflow regulating device further includes a limiting component (2), which includes a first limiting member (21) and a limiting drive member (22). The limiting drive member (22) drives the first limiting member (21) to move so that the first limiting member (21) can switch between a limiting position in the rotation path of the regulating baffle (1) and a separation position out of the rotation path. The regulating baffle (1) in either of the windproof positions can abut against the first limiting member (21) in the limiting position to restrict the regulating baffle (1) from rotating in the direction toward the other windproof position.

2. The air volume regulating device according to claim 1, characterized in that, Two position detection elements (5) are installed on the mounting base (3). The two position detection elements (5) are set one-to-one with the two windproof positions. The position detection elements (5) are used to detect whether the adjusting baffle (1) is rotated to the corresponding windproof position.

3. The air volume regulating device according to claim 2, characterized in that, The adjusting baffle (1) includes a wind deflector (11) and two stop portions (122). The two stop portions (122) and the wind deflector (11) are spaced apart around the rotation axis of the adjusting baffle (1). When the adjusting baffle (1) is in any of the wind deflector positions, one of the stop portions (122) triggers the corresponding position detection element (5), and the other stop portion (122) can abut against the first limiting element (21) in the limiting position.

4. The air volume regulating device according to claim 3, characterized in that, The two position detection elements (5) are symmetrically arranged with respect to a symmetrical plane passing through the rotation axis of the adjustment baffle (1), and the symmetrical plane passes through the first limiting element (21).

5. The air volume regulating device according to claim 3, characterized in that, The adjusting baffle (1) includes a rotating mounting part (12), which is detachably connected to the first end of the wind deflector (11). The rotating mounting part (12) has the stop part (122) and a rotating shaft hole. The motor shaft (41) of the drive motor (4) is fixedly inserted into the rotating shaft hole.

6. The air volume regulating device according to claim 5, characterized in that, The rotating mounting component (12) includes a connecting sleeve (121) and a connecting plate (123). The connecting plate (123) and two stop portions (122) are spaced apart circumferentially along the connecting sleeve (121) and one end is connected to the connecting sleeve (121), while the other end extends radially along the connecting sleeve (121). The inner hole of the connecting sleeve (121) is the rotating shaft hole. The connecting plate (123) extends in the same direction and is connected to the wind deflector (11).

7. The air volume regulating device according to claim 5, characterized in that, The wind deflector (11) includes a main wind deflector section (111) and a connecting section (112) connected to one end of the main wind deflector section (111); along the rotation axis of the adjusting baffle (1), the width of the connecting section (112) is smaller than the width of the main wind deflector section (111); the connecting section (112) is detachably connected to the rotating mounting member (12).

8. The air volume regulating device according to any one of claims 1-7, characterized in that, The adjusting baffle (1) has a rotating shaft hole, and the motor shaft (41) of the drive motor (4) passes through the rotating shaft hole. A rotating bearing (7) is sleeved on the motor shaft (41). The rotating bearing (7) and the mounting seat (3) are located on opposite sides of the adjusting baffle (1) along the rotation axis.

9. The air volume regulating device according to any one of claims 1-7, characterized in that, The limiting drive component (22) includes an electromagnetic lock, the locking rod of the electromagnetic lock is the first limiting component (21), when the first limiting component (21) is in the separated position, the limiting component (2) is hidden in the mounting base (3), when the first limiting component (21) is in the limiting position, the first limiting component (21) partially extends out of the mounting base (3).

10. The air volume regulating device according to any one of claims 2-7, characterized in that, The adjusting baffle (1) and the position detection component (5) are both installed on the outside of one side of the mounting base (3), and the drive motor (4) and at least part of the limiting component (2) are installed inside the mounting base (3).

11. The air volume regulating device according to any one of claims 2-7, characterized in that, The air volume regulating device further includes a second limiting member (6), which is configured to correspond one-to-one with the windproof position. The second limiting member (6) restricts the regulating baffle (1) in the windproof position from rotating in a direction away from the other windproof position.

12. The air volume regulating device according to claim 11, characterized in that, The position detection element (5) includes a micro switch having a housing (51) and a contact portion (52) located outside the housing (51). One end of the contact portion (52) is connected to the housing (51), and the second end of the contact portion (52) can be brought close to the housing (51) to switch the position detection element (5) to a triggered state. The second limiting member (6) is at least partially inserted between the second end of the contact portion (52) and the housing (51).

13. A fume extraction device, characterized in that, include: The fume hood (200) has a smoke collection chamber (2011), an air inlet (2012) communicating with the smoke collection chamber (2011), and an air outlet (2013) communicating with the smoke collection chamber (2011); The air volume regulating device according to any one of claims 1-12, wherein the air volume regulating device is installed inside the smoke collection chamber (2011), the mounting base (3) is disposed near the air inlet (2012) and located in the middle of the smoke collection chamber (2011) in the left-right direction, the second end of the regulating baffle (1) extends in the direction toward the air outlet (2013), and the drive motor (4) drives the regulating baffle (1) to swing left and right to divide the smoke collection chamber (2011) into two variable volume air inlet chambers, and at least one of the air inlet chambers is connected to the air outlet (2013).

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