Smoke baffle driving system, smoke baffle driving method, extractor hood, storage medium

Abstract

The present application relates to a kind of smoke baffle driving systems, connected with smoke baffle, including motor;Transmission mechanism, be connected between motor and smoke baffle, can the rotating action of motor be converted into the swing action of driving smoke baffle;Hydraulic system, connected with transmission mechanism, for transmission mechanism provides resistance to adjust the driving speed of smoke baffle.The smoke baffle driving system makes the running speed of smoke baffle stable, sound quality is excellent, eliminates the jerk problem of vertical position, and does not need to rely on motor to realize position self-locking.The present application also relates to a kind of smoke baffle driving method, S1, obtains the driving signal of smoke baffle;S2, power supply for hydraulic system, while controlling motor to work to drive smoke baffle steady rotation;S3, whether the smoke baffle is rotated to place;If smoke baffle rotates to place, then control hydraulic system power off.The present application also relates to the range hood of application smoke baffle driving system, and also relates to a kind of computer readable storage medium.

Description

TECHNICAL FIELD

[0001] The present application relates to a smoke baffle driving system, a smoke baffle driving method, an extractor hood and a storage medium. BACKGROUND

[0002] A smoke baffle is usually arranged on a near-suction extractor hood. The smoke baffle is controlled to be opened when the extractor hood is turned on to work, and is controlled to be closed after the work is finished. In the process of controlling the smoke baffle to be opened, the first half of the smoke baffle is opened, and the smoke baffle is flipped from a self-inclined position to a vertical position. In this process, the gravity of the smoke baffle drags the motor to run, and at this time, the motor rotates at a high speed, and the opening speed of the smoke baffle is also fast. In the second half of the process of opening the smoke baffle, the smoke baffle is flipped from the vertical position to the upside. In this process, the motor drives the smoke baffle to run, and the opening speed of the smoke baffle is reduced. As can be seen, the rotating speed of the smoke baffle is unstable in the whole movement process of the smoke baffle.

[0003] On this basis, the first half of the stroke of opening the smoke baffle produces a larger noise due to the high speed of the motor, and the second half of the stroke produces a smaller noise due to the low speed of the motor. As a result, the noise in the movement process of the smoke baffle is different in size, and the sound quality is poor.

[0004] In addition, for the smoke baffle installed by using a non-damping rotating shaft, when the smoke baffle runs to the vertical position (the lowest position of the gravity center of the smoke baffle), the smoke baffle is changed from being dragged by gravity to being driven by the motor. In this change process, due to the influence of the clearances of the transmission mechanisms such as the gear clearance and the rotating shaft clearance, the smoke baffle will have a clear jerk, which brings a poor use experience.

[0005] The reason for the above phenomenon is that in the whole movement process of the smoke baffle, the load transmitted to the motor changes with the change of the angle position, and the rotating speed of the motor also changes correspondingly under different loads, thus the speed is uneven, and the noise is large or small. That is, the above shortcomings are caused by the fact that the load transmitted to the motor is not constant in the movement process of the smoke baffle.

[0006] The extractor hood in the prior art usually uses a spur gear reduction motor to drive the smoke baffle. The spur gear reduction motor has the advantage of high transmission efficiency, but the self-locking force is very small. If such a reduction motor is used to drive a smoke baffle with a large load, the smoke baffle will often fall back after being opened to the position. In addition, in the design process of the extractor hood, the appearance and space are affected, and the screws are designed as few as possible on the appearance surface. For the problem of the smoke baffle falling back, if a reduction motor with a large self-locking force is used, the smoke baffle cannot be opened once the driving motor fails in the closed state, and it is difficult to disassemble the extractor hood for maintenance. SUMMARY

[0007] The first technical problem to be solved by the present application is to provide a smoke baffle driving system for the prior art, so that the running speed of the smoke baffle is stable, the sound quality is excellent, the jerk problem at the vertical position is eliminated, and the position self-locking is realized without relying on the motor.

[0008] The second technical problem to be solved by the present application is to provide a smoke baffle driving method of the aforementioned smoke baffle driving system.

[0009] The third technical problem to be solved by the present application is to provide an extractor hood applying the aforementioned smoke baffle driving system and smoke baffle driving method.

[0010] The extractor hood applying the aforementioned smoke baffle driving method.

[0011] The fourth technical problem to be solved by the present application is to provide a storage medium storing a program for implementing the aforementioned smoke baffle driving method.

[0012] The technical solution adopted by the present application to solve the first technical problem is a smoke baffle driving system connected with a smoke baffle, comprising

[0013] a motor;

[0014] a transmission mechanism connected between the motor and the smoke baffle, capable of converting the rotating action of the motor into the swinging action of the smoke baffle;

[0015] characterized in that it further comprises

[0016] a hydraulic system connected with the transmission mechanism, used for providing resistance to the transmission mechanism to adjust the driving speed of the smoke baffle.

[0017] Preferably, the hydraulic system comprises a hydraulic cylinder, and a piston rod of the hydraulic cylinder is connected with the transmission mechanism.

[0018] Preferably, the hydraulic cylinder is provided with oil ports at both ends thereof;

[0019] The hydraulic system further comprises a three-position four-way reversing valve and a one-way speed regulating valve, the three-position four-way reversing valve is connected with the oil ports of the hydraulic cylinder, and the one-way speed regulating valve is connected with the three-position four-way reversing valve.

[0020] In order to realize overload protection, two overflow valves are further provided, and the overflow valves are arranged on the oil paths connecting the oil ports with the three-position four-way reversing valve, respectively.

[0021] In order to facilitate maintenance, the three-position four-way reversing valve is a hand-held integrated reversing valve.

[0022] Preferably, one end of the hydraulic cylinder away from the piston rod is rotatably connected to the casing, and the end of the piston rod is rotatably connected to the transmission mechanism.

[0023] The technical scheme adopted by the present application to solve the second technical problem is: a smoke baffle driving method characterized by adopting the smoke baffle driving system as described above.

[0024] The smoke baffle driving method comprises:

[0025] S1, obtaining a driving signal of the smoke baffle;

[0026] S2, supplying power to the hydraulic system and simultaneously controlling the motor to drive the smoke baffle to move, and in the process of driving the smoke baffle to move, the hydraulic system eliminates the rotational speed fluctuation caused by the gravity of the smoke baffle based on constant flow regulation;

[0027] S3, detecting a smoke baffle rotation to position signal and determining whether the smoke baffle rotates to position according to the smoke baffle rotation to position signal;

[0028] If the smoke baffle rotates to position, the hydraulic system is controlled to be powered off.

[0029] Optionally, the motor locked-rotor signal is taken as the smoke baffle rotation to position signal.

[0030] Optionally, a travel switch is arranged at the position corresponding to the rotation to position of the smoke baffle, and the travel switch signal is taken as the smoke baffle rotation to position signal.

[0031] As an improvement, the smoke baffle driving system as described above is adopted.

[0032] When the motor fails, the three-position four-way reversing valve is switched to a manual mode, and then the smoke baffle is manually pushed to move to realize maintenance.

[0033] As an improvement, the smoke baffle driving system as described above is adopted.

[0034] When the smoke baffle is touched by external force and the overflow valve reaches the relief pressure set by the hydraulic system, the overflow valve is turned on, and the smoke baffle rotates based on the external force.

[0035] The technical scheme adopted by the present application to solve the third technical problem is: a range hood comprising a casing with a smoke inlet, a smoke baffle covering the smoke inlet, and a smoke baffle driving system as described above arranged in the casing.

[0036] Further comprising a processor and a memory, the processor being electrically connected with the memory, the motor and the hydraulic system, the memory storing a computer program for running on the processor, and the processor realizing the smoke baffle driving method as described above when executing the computer program.

[0037] The technical scheme adopted by the present application to solve the fourth technical problem is: a computer readable storage medium, which stores a computer program, wherein the computer program is executed by a processor to implement the smoke baffle driving method as described above.

[0038] Compared with the prior art, the advantages of the present application are that: in the smoke baffle driving system in the present application, on the basis of setting a motor and a transmission mechanism to drive the smoke baffle, an additional hydraulic system connected with the transmission mechanism is set, the motor speed fluctuation problem caused by the gravity of the smoke baffle itself can be eliminated through the hydraulic system, the constant load of the motor is ensured, and then the constant speed driving of the smoke baffle is realized, so that the running speed of the smoke baffle is stable, and the problem of noise being large or small caused by uneven speed is also avoided, the sound quality of the smoke baffle working is ensured, and the user experience is optimized. And because the smoke baffle can rotate at a stable speed, the jerk problem when the smoke baffle reaches the vertical position is also eliminated. In addition, because the hydraulic system can be in a locked state after power failure, the smoke baffle position self-locking does not need to rely on the motor, and the motor selection range is expanded, such as the motor without self-locking capability can be selected.

[0039] The smoke baffle driving method of the smoke baffle driving system realizes the stable speed driving of the smoke baffle, realizes the self-locking of the smoke baffle, so that the driving effect of the smoke baffle is better and the use quality is higher.

[0040] And the range hood applying the smoke baffle driving system and the smoke baffle driving method has better user experience. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is an internal structure diagram of the range hood in the embodiment of the present application.

[0042] Figure 2 It is a structure schematic diagram of the hydraulic system in the embodiment of the present application. DETAILED DESCRIPTION

[0043] The present application will be further described in detail below with reference to the embodiments of the drawings.

[0044] As shown in the drawings, Figure 1 The smoke baffle driving system in the embodiment is applied to a range hood with a smoke baffle 1. Generally, the range hood with the smoke baffle 1 is a side suction type range hood, and when the smoke baffle 1 is in a closed state, it has a certain angle with the horizontal plane, and when the smoke baffle 1 is opened, it is first rotated to the vertical position, and then swings forward and upward to have a certain angle with the horizontal plane.

[0045] The smoke baffle driving system in the embodiment can be set on various side suction type range hoods for use. Specifically, Figure 1As shown, the range hood in this embodiment includes a housing 5 with a smoke inlet, a smoke baffle 1 covering the smoke inlet, and the following smoke baffle drive system is provided inside the housing 5.

[0046] In addition, the range hood also includes a processor and a memory. The processor is electrically connected to the memory, motor 2, and hydraulic system 4. The memory stores a computer program for running on the processor. When the processor executes the computer program, it implements the following method for driving the smoke baffle.

[0047] In this embodiment, the smoke baffle drive system includes a motor 2, a transmission mechanism 3, and a hydraulic system 4. In this embodiment, the motor 2 can be a motor without self-locking force, and self-locking is achieved by relying on the hydraulic system 4.

[0048] The transmission mechanism 3 is connected between the motor 2 and the smoke baffle 1, and can convert the rotational motion of the motor 2 into the swinging motion of the smoke baffle 1. The transmission mechanism 3 can adopt various transmission structures in the prior art, such as a rotational transmission structure composed of multiple linkages. The motor 2 operates to drive the transmission mechanism 3 to move, thereby driving the smoke baffle 1 to open and close.

[0049] The hydraulic system 4 is connected to the transmission mechanism 3. The hydraulic system 4 is used to provide resistance to the transmission mechanism 3 to adjust the driving speed of the smoke baffle 1.

[0050] like Figure 2 As shown, the hydraulic system 4 in this embodiment includes a hydraulic cylinder 41. The hydraulic cylinder 41 mainly includes a cylinder liner, a piston located inside the cylinder liner, and a piston rod 411 connected to the piston. The piston divides the space inside the cylinder liner into two regions, and oil ports 412 are respectively provided at both ends of the hydraulic cylinder 41. Based on the inflow and outflow of hydraulic oil through the oil ports 412 in the two regions inside the cylinder liner, the piston is driven to reciprocate, thereby realizing the output of force through the piston rod 411. The piston rod 411 of the hydraulic cylinder 41 is connected to the transmission mechanism 3. The end of the hydraulic cylinder 41 away from the piston rod 411 is rotatably connected to the housing 5, and is connected to the housing 5 in the form of a revolute joint. The end of the piston rod 411 is rotatably connected to the transmission mechanism 3, and is also connected to the transmission mechanism 3 in the form of a revolute joint. In this embodiment, the end of the piston rod 411 is connected to the output connecting rod connected to the smoke baffle 1 in the mechanism.

[0051] The hydraulic system 4 in the embodiment further comprises a three-position four-way reversing valve 42 and a one-way speed regulating valve 43, the three-position four-way reversing valve 42 is connected with each oil port 412 of the hydraulic cylinder 41, and the one-way speed regulating valve 43 is connected with the three-position four-way reversing valve 42. The flow direction of the hydraulic oil of the two oil ports 412 of the hydraulic cylinder 41 can be switched through the three-position four-way reversing valve 42, and the constant flow control of the hydraulic oil can be realized through the one-way speed regulating valve 43. Although the load fluctuation of the motor 2 is caused during the movement of the smoke baffle 1, and the speed fluctuation of the motor 2 is caused, the stable flow rate of the hydraulic oil in the hydraulic system 4 can be realized through the constant flow regulation and control of the one-way speed regulating valve 43.

[0052] In addition, in order to realize overload protection, two overflow valves 44 are further included, and the overflow valves 44 are arranged on the oil paths connected between each oil port 412 and the three-position four-way reversing valve 42. The relief pressure of the overflow valves 44 is selected according to the requirements.

[0053] In order to facilitate maintenance, the three-position four-way reversing valve 42 is a hand and electric integrated reversing valve, and the manual operation part of the hand and electric integrated reversing valve can be exposed outside the casing 5. When the smoke baffle 1 is in the closed state and the motor 2 fails, the three-position four-way reversing valve 42 can be manually operated to work in the manual state, and then the position locking state of the hydraulic system 4 is released, that is, the piston rod 411 is allowed to move relative to the cylinder sleeve, and then the user can manually open the smoke baffle 1 to realize the maintenance of the inside of the range hood.

[0054] The smoke baffle driving method of the foregoing smoke baffle driving system comprises the following steps.

[0055] S1, the processor acquires the driving signal of the smoke baffle 1. Usually, the driving signal is the opening signal and the closing signal of the range hood, that is, when the opening signal of the range hood is acquired, the smoke baffle 1 is driven in the direction of being opened. When the closing signal of the range hood is acquired, the smoke baffle 1 is driven in the direction of being closed.

[0056] S2, after the driving signal of the smoke baffle 1 is acquired, the driving of the smoke baffle 1 needs to be realized, at this time, the hydraulic system 4 is powered to act on the transmission mechanism 3, and then finally acts on the smoke baffle 1. At the same time, the motor 2 is controlled to work, and under the driving of the motor 2, the smoke baffle 1 is driven to move through the transmission mechanism 3. In the process of driving the smoke baffle 1 to move, the hydraulic system 4 realizes constant flow regulation based on the action of the three-position four-way reversing valve 42 and the one-way speed regulating valve 43, and then the load fluctuation of the motor 2 caused by the gravity of the smoke baffle 1 is eliminated, so that the motor 2 cooperates with the transmission mechanism 3 to be in the state of stably driving the smoke baffle 1.

[0057] With the motor 2 driving the smoke baffle 1 opening as an example, the specific working process of the hydraulic system 4 is that the piston in the hydraulic cylinder 41 moves to the right. At this time, the hydraulic oil on the right side of the hydraulic cylinder 41 passes through the left position of the three-position four-way reversing valve 42, enters the one-way speed regulating valve 43, and the one-way speed regulating valve 43 has a constant flow control function. Although the load of the smoke baffle 1 fluctuates, causing the speed of the motor 2 to fluctuate, the hydraulic oil on the right side of the piston in the hydraulic cylinder 41 can run in the hydraulic system 4 at a stable flow rate through the constant flow control of the one-way speed regulating valve 43. After coming out of the one-way speed regulating valve 43, it enters the left side of the oil cylinder through the left position of the three-position four-way reversing valve 42.

[0058] When the motor 2 reverses to drive the smoke baffle 1 to close, the hydraulic system 4 works in the opposite direction of the hydraulic oil flow.

[0059] S3, detect the smoke baffle 1 rotation to position signal, based on the structure of determining the smoke baffle 1 rotation to position, then can through different signal as the smoke baffle 1 rotation to position signal. If the rotation of the smoke baffle 1 to the position is realized by mechanical limiting, the motor 2 blocking signal is used as the smoke baffle 1 rotation to position signal. If a travel switch is arranged on the casing 5 corresponding to the position of the smoke baffle 1 rotation to position, the travel switch signal is used as the smoke baffle 1 rotation to position signal.

[0060] According to the smoke baffle 1 rotation to position signal, it is judged whether the smoke baffle 1 rotates to position. If the smoke baffle 1 rotates to position, the hydraulic system 4 is controlled to be powered off. After the hydraulic system 4 is powered off, the three-position four-way reversing valve 42 is in the middle position, and the three-position four-way reversing valve 42 cannot realize the flow between the hydraulic oils on both sides of the piston in the hydraulic cylinder 41, so that the piston is fixed in the hydraulic cylinder 41, that is, the position of the piston rod 411 in the hydraulic cylinder 41 is locked, so that the position of the smoke baffle 1 is limited by the hydraulic system 4.

[0061] If the smoke baffle 1 does not rotate to position, the hydraulic system 4 and the motor 2 continue to work to perform the work in S2.

[0062] In addition, when the motor 2 fails, especially when the smoke baffle 1 is in the closed state and the motor 2 fails, since the appearance of the range hood is almost not designed with screws, the smoke baffle 1 cannot be opened to handle the motor 2 failure. However, the three-position four-way reversing valve 42 in the embodiment is a hand and electric integrated reversing valve, so the user can switch the three-position four-way reversing valve 42 to manual mode by operation, and then manually push the smoke baffle 1 to move to realize the maintenance of the motor 2 inside the casing 5.

[0063] Moreover, based on the setting of the overflow valve 44, when an operation of accidentally touching the smoke screen 1 with too much force, accidentally hitting the smoke screen 1 with the head, accidentally touching the smoke screen 1 when the pot is overturned, etc., the external force can make the force acting on the overflow valve 44 reach the relief pressure set by the hydraulic system 4, that is, when the external force touches the smoke screen 1 and makes the overflow valve 44 reach the relief pressure set by the hydraulic system 4, the overflow valve 44 is conducted, and the oil paths on both sides of the piston in the hydraulic cylinder 41 are in a conducted state, so that the smoke screen 1 can be rotated based on the external force, avoiding the case that the smoke screen 1 is damaged due to the external force when the hydraulic system 4 locks the position of the smoke screen 1.

[0064] The smoke screen driving system in the application, on the basis of setting the motor 2 and the transmission mechanism 3 to drive the smoke screen 1, additionally sets the hydraulic system 4 connected with the transmission mechanism 3, which can eliminate the motor 2 load fluctuation problem caused by the gravity of the smoke screen 1 itself, ensure the constant of the motor 2 load, and further realize the constant speed driving of the smoke screen 1, so that the running speed of the smoke screen 1 is stable, and the problem of large and small noise caused by uneven speed is avoided, the sound quality of the smoke screen 1 work is ensured, and the user experience is optimized. Moreover, since the smoke screen 1 can rotate at a stable speed, the jerk problem when the smoke screen 1 reaches the vertical position is also eliminated. In addition, since the hydraulic system 4 can be locked after power failure, the self-locking of the smoke screen 1 can be realized without relying on the motor 2, which expands the selection range of the motor 2, such as selecting a motor 2 without self-locking capability.

[0065] The smoke screen driving method of the smoke screen driving system realizes the stable speed driving of the smoke screen 1, realizes the self-locking of the smoke screen 1, makes the driving effect of the smoke screen 1 better, and has higher use quality.

[0066] The range hood applying the smoke screen driving system and the smoke screen driving method has better user experience.

[0067] The embodiment also relates to a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the smoke screen driving method as described above.

[0068] In the specification and claims of the present application, terms indicating directions, such as "front", "back", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present application, but these terms are used herein only for the purpose of convenience of description and are determined based on the example orientation shown in the drawings. Since the disclosed embodiments of the present application can be arranged in different directions, these terms indicating directions are only for illustration and should not be considered as limitation, for example, "upper" and "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity.

Claims

1. A smoke screen driving system connected with a smoke screen (1), comprising a motor (2); a transmission mechanism (3) connected between the motor (2) and the smoke screen (1), capable of converting the rotating action of the motor (2) into the swinging action of driving the smoke screen (1); characterized in that further comprising a hydraulic system (4) connected with the transmission mechanism (3), used for providing resistance to the transmission mechanism (3) to adjust the driving speed of the smoke screen (1); the hydraulic system (4) comprises a hydraulic cylinder (41), a piston rod (411) of the hydraulic cylinder (41) is connected with the transmission mechanism (3); both ends of the hydraulic cylinder (41) are respectively provided with oil ports (412); the hydraulic system (4) further comprises a three-position four-way reversing valve (42), a one-way speed regulating valve (43), and two overflow valves (44), the three-position four-way reversing valve (42) is connected with each oil port (412) of the hydraulic cylinder (41), and the one-way speed regulating valve (43) is connected with the three-position four-way reversing valve (42); the overflow valves (44) are respectively arranged on the oil paths connected between each oil port (412) and the three-position four-way reversing valve (42); the relief pressure of the selected overflow valve (44) is set, when the smoke screen (1) is touched by an external force and the overflow valve (44) reaches the relief pressure set by the hydraulic system (4), the overflow valve (44) is conducted, so that the oil paths on both sides of the piston in the hydraulic cylinder (41) are in a conducted state, and the smoke screen (1) rotates based on the external force.

2. The smoke screen panel drive system of claim 1, wherein: The three-position four-way reversing valve (42) is a hand and electric integrated reversing valve.

3. The smoke screen curtain drive system of claim 1, wherein: One end of the hydraulic cylinder (41) away from the piston rod (411) is rotatably connected to the machine shell (5), and the end of the piston rod (411) is rotatably connected to the transmission mechanism (3).

4. A method of driving a smoke screen, characterized by: The smoke screen driving system according to any one of claims 1 to 3 is adopted; The smoke screen driving method comprises: S1, obtaining a driving signal of the smoke screen (1); S2, supplying power to the hydraulic system (4), and simultaneously controlling the motor (2) to work to drive the smoke screen (1) to act, in the process of driving the smoke screen (1) to act, the hydraulic system (4) eliminates the rotating speed fluctuation caused by the gravity of the smoke screen (1) based on the constant flow regulation; S3, detecting a smoke screen (1) rotation to position signal, and judging whether the smoke screen (1) rotates to position according to the smoke screen (1) rotation to position signal; if the smoke screen (1) rotates to position, controlling the hydraulic system (4) to be powered off.

5. The smoke screen panel drive method of claim 4, wherein: The motor (2) stall signal is used as the smoke screen (1) rotation to position signal.

6. The smoke screen panel drive method of claim 4, wherein: A travel switch is arranged at the position corresponding to the smoke screen (1) rotation to position, and the travel switch signal is used as the smoke screen (1) rotation to position signal.

7. The smoke screen panel drive method of claim 4, wherein: The smoke screen driving system according to claim 5 is adopted; when the motor (2) fails, the three-position four-way reversing valve (42) is switched to a manual mode, and then the smoke screen (1) is manually pushed to act to realize maintenance.

8. An oil fume extractor comprising a machine shell (5) with an oil inlet, a smoke screen (1) covering the oil inlet, and a smoke screen driving system according to any one of claims 1 to 3 arranged in the machine shell (5). The smoke screen driving device further comprises a processor and a memory, the processor is electrically connected with the memory, the motor (2) and the hydraulic system (4), the memory stores a computer program for running on the processor, and the processor implements the smoke screen driving method according to any one of claims 4 to 7 when the computer program is executed.

9. A computer readable storage medium having stored thereon a computer program, characterized in that: The computer program is executed by the processor to implement the smoke screen driving method according to any one of claims 4 to 7.

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