Air conditioner fresh air structure capable of controlling uncovering height through magnetic suspension and control method of air conditioner fresh air structure

Abstract

The invention relates to the technical field of heat pump air conditioners, in particular to an air conditioner fresh air structure capable of controlling the uncovering height through magnetic suspension and a control method of the air conditioner fresh air structure, the control method for controlling the uncovering height through magnetic suspension is included, an uncovering device comprises a fixing frame, and a lifting mechanism is arranged in the fixing frame. The lifting end of the lifting mechanism is fixedly provided with a bearing part, an electromagnetic induction assembly is arranged in the bearing part, a cover body is arranged above the bearing part, the cover body comprises a magnet arranged on the bottom face, and the cover body is provided with a fixing assembly used for fixing the magnet. The cover opening device has the advantages that the specific cover opening height can be controlled more accurately, the air outlet range can be met, and a better effect is achieved on the use feeling of a fresh air system using a magnetic suspension structure.

Description

Technical Field

[0001] The present application relates to the technical field of heat pump air conditioners, and in particular to a fresh air structure for air conditioners with magnetic levitation to control the opening height of a cover and a control method thereof. Background Art

[0002] In recent years, heat pump air conditioners have become increasingly popular due to their energy-saving and emission-reduction advantages. However, prolonged use can create a relatively closed indoor environment, preventing air from being refreshed, which can negatively impact the user experience. Fresh air systems, owing to their efficient ventilation and air purification capabilities, are widely used in residential, commercial, and industrial settings. As a key component of fresh air systems, the opening and closing control of the air outlet cover directly impacts airflow efficiency, wind direction, and energy consumption.

[0003] However, the design of the air outlet cover of the traditional fresh air system has significant defects in opening and closing methods, height adjustment accuracy and reliability. For example, due to the limitations of the mechanical transmission structure, the current mainstream solutions mostly use mechanical structures such as gears, connecting rods or hinges to drive the cover to open and close. This type of design has the following disadvantages: low adjustment accuracy: mechanical parts are prone to wear, resulting in increased transmission clearance. After long-term use, the opening and closing height deviation of the cover is significant, making it difficult to accurately match the air outlet angle range requirements (such as deviations of more than ±5°); high installation complexity: in order to achieve long-distance transmission, a complex linkage mechanism (such as a long shaft, a synchronous belt) must be configured, which has strict requirements on installation accuracy and occupies a large space, making it difficult to adapt to compact equipment; noise and life issues: the noise generated by mechanical friction (>50dB) affects the user experience, and frequent opening and closing can easily lead to fatigue and fracture of components, with an average lifespan of less than 50,000 times. Summary of the Invention

[0004] In order to achieve more precise control of the specific height of the cover opening so that it can meet the range of the air outlet and give users a better experience of using the fresh air system using a magnetic levitation structure, the present application provides a fresh air structure for air conditioning with magnetic levitation control of the cover opening height and a control method thereof.

[0005] In the first aspect, the present application provides a method for controlling the opening height of a lid by magnetic levitation, which adopts the following technical solution: A method for controlling the opening height of a cover by magnetic suspension, comprising the following steps: S1: Measure and record the weight of the cover structure and the corresponding gravity value; S2: Detecting the real-time distance and the real-time magnetic field strength between the cover and the electromagnetic induction component in real time through the distance detection device and the magnetic field detection device in the electromagnetic induction component; S3: Record the first distance L1 between the cover and the electromagnetic induction component when the cover is in the closed state, and the second distance L2 between the cover and the electromagnetic induction component when the cover is fully opened, where L1 <L2; S4: Record the initial suspension magnetic field intensity K1 and the gentle suspension magnetic field intensity K2 when the electromagnetic field is working, where K1 < K2; S5: Set the opening time T of the cover, calculate the moving speed V of the cover body = (L2 - L1) / T, set the lifting mechanism to assist the cover body to open the cover, and simultaneously set the lifting speed V of the lifting mechanism 升 = V; S6: Respond to the magnetic levitation cover opening signal, start the electromagnetic field and adjust the magnetic field intensity, including: S6.1: Increase the magnetic field intensity to K1, and then increase it to K2 within 2 - 3 seconds to make the cover body enter the gentle suspension state; S6.2: Control the lifting mechanism to drive the cover body to move at a speed V 升 for a duration of T; S6.3: Detect the actual distance L after the cover body moves T , and compare it with L2: If L T = L2, maintain the current magnetic field intensity K2; If L T > L2, reduce the magnetic field intensity until L T = L2, record the adjusted magnetic field intensity as K3, and update K2 = K3; If L T < L2, increase the magnetic field intensity until L T = L2, record the adjusted magnetic field intensity as K3, and update K2 = K3. [[ID=P34]]

[0006] By adopting the above technical solution, through the detection and control of the magnetic field intensity, the lifting speed of the lifting mechanism, the distance between the cover body and the electromagnetic induction component, and the opening time of the cover, the magnetic levitation gentle opening of the cover to an appropriate height is achieved. During the use of the fresh air function, the magnetic field and the height of the cover body are continuously detected. If there is a deviation from the preset value, it will be adjusted by controlling the magnitude of the magnetic field intensity, so that the suspension height is controlled within a reasonable range value, and the previously stored record numerical range is corrected, ensuring that the magnetic levitation controlled opening of the cover is gentle and the height is suitable, achieving more precise control of the specific opening height so that it can meet the range of the air outlet, and giving users a better user experience when using the fresh air system with a magnetic levitation structure.

[0007] Optionally, the value range of the opening time T is 3 - 5 seconds.

[0008] By adopting the above technical solution, T mainly represents the opening time of the cover, and T is preferably 3 - 5 seconds. It should not be too short or too long. Generally, when the moving distance L = L2 - L1 is fixed, the longer the opening time, the gentler the suspension opening of the cover. However, if the opening time is too long, it will affect the use of the fresh air function and the user experience.

[0009] Optionally, in step S6.1, the magnetic field strength is increased from K1 to K2 in a linear, step-by-step, or exponential curve manner.

[0010] By adopting the above technical solution, different increasing methods (linear, step, exponential) of magnetic field strength from K1 to K2 can adapt to the needs of different scenarios, thereby improving the flexibility and adaptability of magnetic field control.

[0011] Optionally, the distance detection device includes at least one of an infrared sensor, an ultrasonic sensor or a laser ranging module.

[0012] By adopting the above technical solution and using infrared, ultrasonic or laser ranging modules, the real-time distance between the cover and the electromagnetic component can be detected with high precision, and it can adapt to complex environments (such as dust and temperature changes), ensuring the reliability of distance feedback data and providing an accurate basis for magnetic field strength adjustment.

[0013] Optionally, the magnetic field detection device includes a Hall sensor or a flux meter, which is used to detect the change of magnetic force between the electromagnetic induction component and the cover in real time.

[0014] By adopting the above technical solution, the Hall sensor or flux meter detects the magnetic field strength in real time, accurately captures the changes in the interaction force between the electromagnetic field and the cover magnet, avoids suspension loss caused by excessive or insufficient magnetic field, and ensures the dynamic balance of the suspension process.

[0015] Optionally, the magnetic field strength adjustment process in step S6.3 adopts a closed-loop control algorithm, including PID regulation or fuzzy control.

[0016] By adopting the above technical solutions, closed-loop control algorithms (such as PID or fuzzy control) can correct the magnetic field strength and lifting speed in real time, dynamically eliminate the influence of external interference (such as wind force and mechanical resistance), shorten the adjustment response time, and improve the system's anti-interference ability and control accuracy.

[0017] Optionally, during the movement of the cover, the multiplexed distance detection device detects the suspension stability of the cover in real time. If the vibration amplitude exceeds a preset threshold, the magnetic field strength K2 and the lifting speed V are dynamically corrected. 升 .

[0018] By adopting the above technical solution, the distance detection device is reused to perform vibration amplitude monitoring and dynamic parameter correction functions. Not only does it not require the use of additional sensors, saving costs, but it can also quickly and stably stabilize the suspension state when the cover is disturbed by external forces, preventing vibration from being transmitted to the internal structure of the fresh air system, extending the life of the equipment and reducing noise.

[0019] In the second aspect, a fresh air structure for an air conditioner with magnetic levitation control of the opening height of the cover is provided, comprising an opening device for realizing a magnetic levitation control method of the opening height of the cover, the opening device comprising a fixed frame, the lifting mechanism being arranged in the fixed frame, the lifting end of the lifting mechanism being fixedly provided with a bearing part, the bearing part being provided with an electromagnetic induction component, a cover body being provided above the bearing part, the cover body comprising a magnet arranged on the bottom surface, and the cover body being provided with a fixing component for fixing the magnet.

[0020] By adopting the above technical solution, the magnet is assembled on the bottom surface of the cover body through the fixing component, and the electromagnetic induction component repels the magnet, so that the cover body is suspended above the load-bearing part. When the lifting mechanism is started, the lifting mechanism drives the load-bearing part and the electromagnetic induction component to rise. Under the action of the magnetic repulsion, the cover body follows and rises, thereby realizing the opening of the cover, which is beneficial to improving the stability of the cover suspension and the opening of the cover.

[0021] Optionally, the fixing assembly includes a plurality of limiting bars, which are arranged in a circular array on the bottom surface of the cover body, and the plurality of limiting bars enclose an installation space for the magnet, and a locking hook is respectively provided at one end of the plurality of limiting bars.

[0022] By adopting the above technical solution, when the magnet needs to be installed, align the magnet with the installation space and force the magnet into the installation space. At this time, the magnet will open the limit bar through the locking hook and finally be inserted into the installation space. Under the blocking action of the locking hook, the magnet is fixed in the installation space, which is conducive to improving the convenience of disassembly and assembly of the magnet.

[0023] Optionally, the cover opening device further includes: The control unit, the distance detection module and the magnetic field detection module are electrically connected to the control unit respectively, and the lifting mechanism is controlled by the control unit; Storage unit, used to save L1, L2, K1, K2 and real-time adjustment parameters; Feedback control module, according to L T The deviation from L2 dynamically adjusts the magnetic field strength and lifting speed.

[0024] By adopting the above technical solution, the integrated opening device achieves all the technical effects of the magnetic levitation control method of the opening height through modular design (cooperation of detection, control, drive, and storage units), and has a parameter self-learning function, which can adapt to changes in the weight of the cover or aging of components caused by long-term use, thereby improving the sustainability of the system.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By detecting and controlling the magnetic field strength, the lifting speed of the lifting mechanism, the distance between the cover and the electromagnetic induction component, and the opening time, the magnetic levitation lid is smoothly opened to the appropriate height. During the use of the fresh air function, the magnetic field and the cover height are continuously detected. If there is any deviation from the preset value, the magnetic field strength is controlled to adjust the levitation height within a reasonable range, and the aforementioned stored record value range is corrected to ensure that the magnetic levitation control opens the lid smoothly and at an appropriate height. This achieves more precise control of the specific opening height to ensure that it meets the range of the air outlet, giving users a better experience of using the fresh air system with a magnetic levitation structure. 2. The magnet is assembled on the bottom surface of the cover through a fixing assembly. The electromagnetic induction assembly and the magnet repel each other, causing the cover to float above the load-bearing part. When the lifting mechanism is activated, the lifting mechanism drives the load-bearing part and the electromagnetic induction assembly to rise. Under the action of the magnetic repulsion, the cover rises with it, thereby realizing the cover opening, which is conducive to improving the stability of the cover suspension and opening; 3. Through the implementation of the above scheme, the stable operation of the fresh air structure of the heat pump air conditioner can be effectively guaranteed, thereby ensuring the renewal of fresh air in the indoor air. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a step diagram of the magnetic levitation control method for the opening height of the cover of the present application; Figure 2 It is a schematic diagram of the overall structure of the cover opening device of the present application; Figure 3 It is a front view of the cover body of the present application.

[0027] Explanation of the accompanying symbols: 1. fixing frame; 2. bearing part; 3. cover body; 4. magnet; 5. limit bar; 6. lock hook; 7. electromagnetic coil; 8. motor; 9. gear; 10. rack. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-3 This application is described in further detail.

[0029] First, see Figure 1 A method for controlling the height of a lid opening by magnetic suspension includes the following steps: S1: Measure and record the weight of the cover 3 structure and the corresponding gravity value. In this embodiment, the gravity of the cover 3 is set to 5N. S2: Use the distance detection device and magnetic field detection device in the electromagnetic induction component to detect the real-time distance and real-time magnetic field strength between the cover 3 and the electromagnetic induction component in real time. S3: Record the first distance L1 between the cover 3 and the electromagnetic induction component when the cover is in the closed state, where L1 = 10 mm, and record L2 when the cover is fully opened, where L2 = 50 mm, L1 <L2; S4: Record the initial suspension magnetic field strength K1 when the electromagnetic field is working, where K1 = 0.8T. Record the gentle suspension magnetic field strength K2, where K2 = 1.2T, and K1 < K2; S5: Set the opening time T, where T = 4 seconds is taken. Calculate the moving speed V of the cover body 3 as V = (L2 - L1) / T, then V = (50 - 10) / 4 = 10 mm / s. At the same time, synchronously set the lifting speed V of the lifting mechanism 升 = V = 10 mm / s; S6: Respond to the magnetic levitation cover opening signal, start the electromagnetic field and adjust the magnetic field strength, including: S6.1: Increase the magnetic field strength from 0 to K1 = 0.8T within 0.5 seconds, and then increase it to K2 = 1.2T within 2 - 3 seconds (2 seconds are taken in this embodiment), so that the cover body 3 enters the gentle suspension state; S6.2: Control the lifting mechanism to drive the cover body 3 to move at a speed V 升 = 10 mm / s for a duration of T = 4 seconds; S6.3: Detect the actual distance L after the cover body 3 moves T , and compare it with L2: If L T = L2 = 50 mm, maintain the current magnetic field strength K2 = 1.2T; If L T = 53 mm (> L2), reduce the magnetic field strength until L T = L2 = 50 mm, record the adjusted magnetic field strength as K3 = 1.15T, and update K2 = K3 = 1.15T; If L T = 48 mm (< L2), increase the magnetic field strength until L T = L2 = 50 mm, record the adjusted magnetic field strength as K3 = 1.25T, and update K2 = K3 = 1.25T.

[0030] By detecting and controlling the magnetic field strength, the lifting speed of the lifting mechanism, the distance between the cover body 3 and the electromagnetic induction component, and the opening time, the magnetic levitation gentle cover opening to an appropriate height is achieved. During the use of the fresh air function, the magnetic field and the height of the cover body 3 are continuously detected. If there is a deviation from the preset value, it will be adjusted by controlling the magnitude of the magnetic field strength, so that the suspension height is controlled within a reasonable range value, and the previously stored recorded numerical range is corrected, ensuring that the magnetic levitation controlled cover opening is gentle and the height is suitable, achieving more precise control of the specific cover opening height so that it can meet the range of the air outlet, giving users a better experience in using the fresh air system with a magnetic levitation structure.

[0031] Specifically, in step S2, the distance detection device includes at least one of an infrared sensor, an ultrasonic sensor, or a laser ranging module. In practical applications, a laser rangefinder is used, and the laser rangefinder samples distance data at a frequency of 10 Hz. This ensures the reliability of the distance feedback data and provides an accurate basis for adjusting the magnetic field strength.

[0032] Furthermore, the magnetic field detection device includes a Hall effect sensor or fluxmeter, which is used to detect changes in the magnetic force between the electromagnetic induction component and the cover 3 in real time. In practical applications, a Hall effect sensor is used, and the sensor samples the magnetic field strength at a frequency of 50Hz. This accurately captures changes in the interaction force between the electromagnetic field and the magnets of the cover 3, preventing levitation loss due to excessive or insufficient magnetic fields, and ensuring dynamic balance during the levitation process.

[0033] Specifically, in practical applications, in step S5, the opening time T is generally in the range of 3-5 seconds. It should not be too short or too long. Generally, when the movement distance L = L2 - L1 = 40 mm, the longer the opening time, the smoother the floating opening. However, if the opening time is too long, it will affect the use of the fresh air function and the user experience.

[0034] Specifically, in step S6.1, the magnetic field strength is increased from K1 to K2 by linear increment, step increment, or exponential curve increment. In actual application, the magnetic field strength is linearly increased from K1 = 0.8 T to K2 = 1.2 T (at an increment rate of 0.2 T / s) within 2 seconds, causing the cover 3 to rise at a uniform speed.

[0035] Specifically, in step S6.3, the magnetic field strength is adjusted using a closed-loop control algorithm, including PID regulation or fuzzy control. This closed-loop control algorithm (such as PID or fuzzy control) corrects the magnetic field strength and lift speed in real time, dynamically eliminating the effects of external interference (such as wind and mechanical resistance), shortening the adjustment response time and improving the system's anti-interference capability and control accuracy.

[0036] Specifically, during the movement of the cover 3, the laser rangefinder is used to detect the suspension stability of the cover 3 in real time. The acceleration data is converted into displacement (vibration amplitude) through integration operation, and the formula is: Set a threshold for the vibration amplitude (such as ±0.5mm), and trigger a correction mechanism when the threshold is exceeded.

[0037] If the vibration amplitude is detected to exceed the preset threshold, the magnetic field strength K2 and the lifting speed V are dynamically corrected. 升 .

[0038] By reusing the distance detection device to perform vibration amplitude monitoring and dynamic parameter correction functions, not only does it not require the use of additional sensors, saving costs, but it can also quickly and stably stabilize the suspension state when the cover body 3 is disturbed by external forces, preventing vibration from being transmitted to the internal structure of the fresh air system, extending the equipment life and reducing noise.

[0039] Second, see Figure 2 A fresh air structure for an air conditioner with magnetic levitation control of the lid opening height includes a lid opening device for implementing a magnetic levitation control method for the lid opening height. The lid opening device includes a fixed frame 1, and a lifting mechanism is installed within the fixed frame 1. The lifting mechanism has a lifting end, which is fixedly connected to a supporting portion 2, and an electromagnetic induction component is installed within the supporting portion 2. A cover body 3 is provided above the supporting portion 2, and the cover body 3 includes a magnet 4 installed on its bottom surface.

[0040] Note that, see Figure 2 The magnet 4 is a circular permanent magnet. The circular permanent magnet is more evenly stressed, and the magnetic field generated by the electromagnetic induction component is relatively even with the magnetic field of the circular magnet 4, which is more conducive to the stability of the float suspension.

[0041] For details, see Figure 2 The lifting mechanism includes a motor 8, a gear 9, and a rack 10. Motor 8 is fixedly mounted within a fixed frame 1, and gear 9 is coaxially fixedly connected to the output shaft of motor 8. Rack 10 is mounted within fixed frame 1 for sliding movement. The top end of rack 10 extends above the top of fixed frame 1 and is fixedly connected to support portion 2. Rack 10 meshes with gear 9.

[0042] When the motor 8 is started, the driving shaft of the motor 8 drives the gear 9 to rotate, the gear 9 drives the rack 10 to rise, and the rack 10 drives the bearing part 2 to rise at a speed of 10 mm / s.

[0043] Specifically, the electromagnetic induction component includes an electromagnetic coil 7 and a magnetic field drive circuit. The electromagnetic coil 7 is a coil made of a conductive material (such as copper wire) and is typically wound around a high-permeability iron or magnetic core to enhance magnetic field strength. The magnetic field drive circuit includes an H-bridge topology power electronics circuit composed of switching devices such as MOSFETs and IGBTs. The magnetic field drive circuit is connected in series with the electromagnetic coil 7.

[0044] See also Figure 3 To enhance the removability of magnet 4, cover 3 is fitted with a fixing assembly comprising retaining bars 5. Multiple retaining bars 5 are provided, each of which is plastic and securely attached to the bottom surface of cover 3 in a circular array. These retaining bars 5 form a mounting space, and each end of each retaining bar 5 is securely connected to a locking hook 6.

[0045] To install magnet 4, align it with the mounting space and forcefully press it into the mounting space. The locking hook 6 then props the plastic retaining strip 5 open, allowing magnet 4 to be inserted into the mounting space. The locking hook 6 secures magnet 4 within the mounting space. Similarly, to remove magnet 4, pull the locking hook 6 outward, then remove magnet 4 from the mounting space.

[0046] Specifically, the cover opening device further includes: The control unit, the distance detection module, the magnetic field detection module and the electromagnetic induction component are electrically connected to the control unit, and the motor 8 in the lifting mechanism is controlled by the control unit; Storage unit, used to save L1, L2, K1, K2 and real-time adjustment parameters; Feedback control module, according to L T The deviation from L2 dynamically adjusts the magnetic field strength and lifting speed.

[0047] The integrated opening device achieves all the technical effects of the magnetic levitation control method for the opening height through modular design (cooperation of detection, control, drive, and storage units), and has a parameter self-learning function, which can adapt to changes in the weight of the cover body 3 or aging of components caused by long-term use, thereby improving the sustainability of the system.

[0048] Working principle of a method for controlling the opening height of a cover by magnetic levitation: To install magnet 4, align it with the mounting space and forcefully press it into the mounting space. The locking hook 6 then props the plastic retaining strip 5 open, allowing magnet 4 to be inserted into the mounting space. The locking hook 6 secures magnet 4 within the mounting space. Similarly, to remove magnet 4, pull the locking hook 6 outward, then remove magnet 4 from the mounting space.

[0049] When power-assisted opening of the cover is required, an electrical signal is sent to the motor 8 through the control unit, the drive shaft of the motor 8 drives the gear 9 to rotate, the gear 9 drives the rack 10 to rise, and the rack 10 drives the bearing part 2 to rise at a speed of 10 mm / s.

[0050] In summary, by detecting and controlling the magnetic field strength, the lifting speed of the lifting mechanism, the distance between the cover 3 and the electromagnetic induction component, and the opening time, the magnetic levitation can be smoothly opened to an appropriate height. During the use of the fresh air function, the magnetic field and the height of the cover 3 are continuously detected. If there is a deviation from the preset value, the magnetic field strength is controlled to adjust the levitation height within a reasonable range, and the aforementioned stored record value range is corrected to ensure that the magnetic levitation control opens the cover smoothly and at an appropriate height. This achieves more precise control of the specific opening height so that it can meet the range of the air outlet, giving users a better experience of using the fresh air system with a magnetic levitation structure.

[0051] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A method for controlling the opening height of a cover by magnetic suspension, characterized in that: The steps include: S1: Measure and record the weight of the cover (3) structure and the corresponding gravity value; S2: Detecting the real-time distance and the real-time magnetic field strength between the cover (3) and the electromagnetic induction component in real time through the distance detection device and the magnetic field detection device in the electromagnetic induction component; S3: Record the first distance L1 between the cover (3) and the electromagnetic induction component when the cover is in the closed state, and the second distance L2 between the cover (3) and the electromagnetic induction component when the cover is fully opened, where L1 <L2; S4: Record the initial suspension magnetic field strength K1 and the smooth suspension magnetic field strength K2 when the electromagnetic field is working, where K1 <K2; S5: Set the cover opening time T, calculate the cover body (3) moving speed V = (L2-L1) / T, set the lifting mechanism to assist the cover body (3) to open the cover, and simultaneously set the lifting speed V of the lifting mechanism 升 =V; S6: In response to the magnetic levitation cover opening signal, the electromagnetic field is activated and the magnetic field strength is adjusted, including: S6.1: Increase the magnetic field strength to K1, and then increase it to K2 within 2-3 seconds, so that the cover (3) enters a gentle suspension state; S6.2: Control the lifting mechanism at a speed of V 升 Drive the cover (3) to move for a duration of T; S6.3: Detect the actual distance L after the cover (3) moves T , and compared with L2: If L T =L2, maintain the current magnetic field strength K2; If L T >L2, reduce the magnetic field strength until L T =L2, record the adjusted magnetic field strength as K3, and update K2=K3; If L T < L2, increase the magnetic field strength until L T = L2, record the adjusted magnetic field strength as K3, and update K2 = K3.

2. The method for controlling the opening height of a lid by magnetic levitation according to claim 1, characterized in that: The value range of the cover opening time T is 3-5 seconds.

3. The method for controlling the opening height of a lid by magnetic levitation according to claim 1, characterized in that: In step S6.1, the magnetic field intensity is increased from K1 to K2 in a linear, step-wise or exponential manner.

4. The method for controlling the opening height of a lid by magnetic levitation according to claim 1, characterized in that: The distance detection device includes at least one of an infrared sensor, an ultrasonic sensor or a laser ranging module.

5. The method for controlling the opening height of a cover by magnetic levitation according to claim 1, characterized in that: The magnetic field detection device comprises a Hall sensor or a flux meter, which is used to detect the change of magnetic force between the electromagnetic induction component and the cover body (3) in real time.

6. The method for controlling the opening height of a lid by magnetic levitation according to claim 1, characterized in that: The adjustment process of the magnetic field strength in step S6.3 adopts a closed-loop control algorithm, including PID regulation or fuzzy control.

7. The method for controlling the opening height of a lid by magnetic levitation according to claim 1, characterized in that: During the movement of the cover (3), the multiplexed distance detection device detects the suspension stability of the cover (3) in real time. If the vibration amplitude exceeds the preset threshold, the magnetic field intensity K2 and the lifting speed V are dynamically corrected. 升 .

8. A fresh air structure for an air conditioner with a magnetic levitation control of the opening height, comprising a control method for realizing a magnetic levitation control of the opening height according to any one of claims 1 to 7, wherein the opening device comprises a fixed frame (1), the lifting mechanism is arranged in the fixed frame (1), a bearing part (2) is fixedly provided at the lifting end of the lifting mechanism, an electromagnetic induction component is arranged in the bearing part (2), a cover body (3) is arranged above the bearing part (2), the cover body (3) includes a magnet (4) arranged on the bottom surface, and the cover body (3) is provided with a fixing component for fixing the magnet (4).

9. The fresh air structure for air conditioning with magnetic levitation and lid opening height control according to claim 8, characterized in that: The fixing assembly includes a plurality of limiting strips (5), which are arranged in a ring array on the bottom surface of the cover body (3), and the plurality of limiting strips (5) enclose a mounting space for the magnet (4), and one end of each of the plurality of limiting strips (5) is provided with a locking hook (6).

10. The fresh air structure for air conditioning with magnetic levitation and lid opening height control according to claim 8, characterized in that: The cover opening device also includes: The control unit, the distance detection module and the magnetic field detection module are electrically connected to the control unit respectively, and the lifting mechanism is controlled by the control unit; Storage unit, used to save L1, L2, K1, K2 and real-time adjustment parameters; Feedback control module, according to L T The deviation from L2 dynamically adjusts the magnetic field strength and lifting speed.

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