Electromagnetic heating smoking device and electromagnetic heating system

Abstract

The present invention discloses an electromagnetic heating smoking device and an electromagnetic heating system, which relate to the field of electromagnetic heating technology. The electromagnetic heating smoking device includes a shell, an electromagnetic coil, a parameter acquisition module, a drive device, and a control module. When alternating current is applied to the electromagnetic coil, a changing alternating magnetic field is generated. The parameter acquisition module acquires the magnetic field strength in the heating chamber. When the magnetic field strength is less than a preset magnetic field strength, the control module controls the electromagnetic coil to move in the shell through the drive device until the new magnetic field strength reaches the preset magnetic field strength. It can be seen that the present application controls the electromagnetic coil to move in the shell through the drive device when the magnetic field strength at the position where the ferromagnetic element in the cigarette is located is less than the preset magnetic field strength, until the new magnetic field strength reaches the preset magnetic field strength. At this time, the ferromagnetic element in the cigarette is at the center of the alternating magnetic field, so as to achieve the maximum heating efficiency of the electromagnetic heating smoking device and improve the user's experience satisfaction.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic heating, and in particular to an electromagnetic heating smoking device and an electromagnetic heating system. Background Art

[0002] When the alternating current of an electromagnetic heating device passes through the electromagnetic coil inside the device, a changing alternating magnetic field is generated. When a cigarette is placed in the electromagnetic heating device, the ferromagnetic elements in the cigarette will generate eddy currents in the alternating magnetic field, causing a Joule heating effect, thereby heating the cigarette. Since the alternating magnetic field generated by the electromagnetic coil has different magnetic field intensities at different locations in space, cigarettes are generally designed so that the cigarette is inserted into the heating chamber of the electromagnetic heating device. When the ferromagnetic elements in the cigarette are at the position of maximum magnetic field intensity, the heating efficiency of the electromagnetic heating device is the highest. Usually, the ferromagnetic elements in the cigarette are located in the center of the smoking section. However, during the current production process of cigarettes, the position of the ferromagnetic elements may deviate from the center of the smoking section. In this case, when the cigarette is inserted into the electromagnetic heating device for heating, since the ferromagnetic elements are not at the position of maximum magnetic field intensity, the electromagnetic heating device cannot achieve maximum heating efficiency, affecting the consumer experience. Summary of the Invention

[0003] The purpose of the present invention is to provide an electromagnetic heating smoking device and an electromagnetic heating system, which uses a control module to control the electromagnetic coil to move in the shell through a driving device when the magnetic field strength at the position of the ferromagnetic element in the cigarette is less than the preset magnetic field strength until the new magnetic field strength is the preset magnetic field strength. At this time, the ferromagnetic element in the cigarette is at the center position of the alternating magnetic field, so as to achieve the maximum heating efficiency of the electromagnetic heating smoking device and improve the user's experience satisfaction.

[0004] In order to solve the above technical problems, the present invention provides an electromagnetic heating smoking device, comprising:

[0005] A housing having a heating chamber disposed at one end of the electromagnetic heating smoking device for placing and heating cigarettes;

[0006] an electromagnetic coil, the electromagnetic coil being disposed in the housing and further disposed on an outer wall of the heating chamber, the electromagnetic coil being connected to an alternating current for generating an alternating magnetic field in the heating chamber using the alternating current;

[0007] a parameter acquisition module, the parameter acquisition module being disposed in the housing and configured to acquire the magnetic field strength in the heating chamber;

[0008] a driving device connected to the electromagnetic coil;

[0009] A control module is connected to the drive device and is used to control the electromagnetic coil to move in the shell through the drive device when the magnetic field strength is less than the preset magnetic field strength until the new magnetic field strength reaches the preset magnetic field strength.

[0010] Optionally, the driving device is also connected to the parameter acquisition module, and the control module is specifically used to control the electromagnetic coil and the parameter acquisition module to move synchronously in the shell through the driving device when the magnetic field strength is less than the preset magnetic field strength until the magnetic field strength reaches the preset magnetic field strength.

[0011] Optionally, the control module is further configured to control the driving device to stop running when the magnetic field strength is a preset blank magnetic field strength;

[0012] The preset blank magnetic field strength is the magnetic field strength collected by the parameter collection module when the cigarette is not placed in the heating chamber.

[0013] Optionally, the parameter acquisition module includes:

[0014] a sensor, the sensor being disposed in the housing and configured to collect the magnetic field strength of the alternating magnetic field;

[0015] a parameter conversion module, connected to the sensor, for converting the magnetic field strength into an electrical signal, wherein the value of the electrical signal is positively correlated with the magnetic field strength, and the electrical signal is voltage / current;

[0016] Accordingly, when the magnetic field strength is less than the preset magnetic field strength, the electromagnetic coil is controlled by the driving device to move in the housing until the new magnetic field strength reaches the preset magnetic field strength, including:

[0017] When the electrical signal is less than a preset electrical signal threshold, the driving device controls the electromagnetic coil to move in the shell until the new electrical signal reaches the preset electrical signal threshold, and the preset electrical signal threshold corresponds to the preset magnetic field strength.

[0018] Optionally, the sensor is an induction coil, and the inner diameter of the induction coil is smaller than the inner diameter of the heating chamber.

[0019] Optionally, the axial direction of the induction coil is parallel to the axial direction of the electromagnetic coil.

[0020] Optionally, the central axis of the induction coil is aligned with the central axis of the electromagnetic coil.

[0021] Optionally, the induction coil is a hollow coil.

[0022] Optionally, controlling the electromagnetic coil to move within the housing by the driving device until the new magnetic field strength reaches the preset magnetic field strength includes:

[0023] Controlling the electromagnetic coil to move in a first preset direction within the housing by the driving device;

[0024] During the movement, if the difference between the new magnetic field strength and the preset magnetic field strength increases, the electromagnetic coil is controlled to move in the opposite direction of the first preset direction; if the difference between the new magnetic field strength and the preset magnetic field strength decreases, the electromagnetic coil is controlled to continue moving in the first preset direction;

[0025] If the new magnetic field strength reaches the preset magnetic field strength during the movement of the movable path in the first preset direction or the opposite direction of the first preset direction, controlling the electromagnetic coil to stop moving;

[0026] If the new magnetic field strength never reaches the preset magnetic field strength during movement along the movable path in the first preset direction or in the opposite direction of the first preset direction, determining a first position where the difference between the new magnetic field strength and the preset magnetic field strength is minimum;

[0027] Controlling the electromagnetic coil to continue moving toward a second preset direction starting from the first position;

[0028] During the movement, if the difference between the new magnetic field strength and the preset magnetic field strength increases, the electromagnetic coil is controlled to move in the opposite direction of the second preset direction; if the difference between the new magnetic field strength and the preset magnetic field strength decreases, the electromagnetic coil is controlled to continue moving in the second preset direction;

[0029] If the new magnetic field strength reaches the preset magnetic field strength during the movement of the movable path in the second preset direction or the opposite direction of the second preset direction, controlling the electromagnetic coil to stop moving;

[0030] If the first preset direction is the axial direction of the electromagnetic coil, the second preset direction is the radial direction of the electromagnetic coil; if the first preset direction is the radial direction of the electromagnetic coil, the second preset direction is the axial direction of the electromagnetic coil.

[0031] The present invention also provides an electromagnetic heating system, comprising a cigarette and the electromagnetic heating smoking device as described above, wherein the cigarette comprises a smoking section and a ferromagnetic element disposed in the smoking section.

[0032] The present application provides an electromagnetic heating smoking device and an electromagnetic heating system, the electromagnetic heating smoking device including a housing, an electromagnetic coil, a parameter acquisition module, a drive device, and a control module, wherein when alternating current is applied to the electromagnetic coil, a changing alternating magnetic field is generated, the parameter acquisition module acquires the magnetic field strength in the heating chamber, and the control module controls the electromagnetic coil to move in the housing through the drive device when the magnetic field strength is less than a preset magnetic field strength, until the new magnetic field strength reaches the preset magnetic field strength. It can be seen that the present application acquires the magnetic field strength of the alternating magnetic field generated by the electromagnetic coil in the heating chamber through the parameter acquisition module, and when a cigarette is placed in the heating chamber, the magnetic field strength acquired by the parameter acquisition module is the magnetic field strength at the position where the ferromagnetic element in the cigarette is located, and then when the magnetic field strength at the position where the ferromagnetic element in the cigarette is located is less than the preset magnetic field strength, the control module controls the electromagnetic coil to move in the housing through the drive device until the new magnetic field strength reaches the preset magnetic field strength, at which point the ferromagnetic element in the cigarette is at the center of the alternating magnetic field, so as to achieve the maximum heating efficiency of the electromagnetic heating smoking device and improve the user's experience satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the prior art and the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 This is a cross-sectional view of an electromagnetic heating smoking device provided by the present invention. DETAILED DESCRIPTION

[0035] The core of the present invention is to provide an electromagnetic heating smoking device and an electromagnetic heating system, which uses a control module to control the electromagnetic coil to move in the shell through a driving device when the magnetic field strength is less than the preset magnetic field strength until the new magnetic field strength reaches the preset magnetic field strength, so as to achieve the maximum heating efficiency of the electromagnetic heating smoking device and improve the user's experience satisfaction.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0037] Because the alternating magnetic field generated by the electromagnetic coil has different magnetic field intensities at different locations in space, cigarettes are generally designed so that when the cigarette is inserted into the heating chamber of the electromagnetic heating device, the heating efficiency of the electromagnetic heating device is maximized when the ferromagnetic element in the cigarette is at the position of maximum magnetic field intensity. Typically, the ferromagnetic element in the cigarette is located at the center of the smoking section. However, during the current cigarette production process, the ferromagnetic element may be positioned away from the center of the smoking section. In this case, when the cigarette is inserted into the electromagnetic heating device for heating, the ferromagnetic element is not located at the position of maximum magnetic field intensity, and the electromagnetic heating device cannot achieve maximum heating efficiency, affecting the consumer experience.

[0038] In order to solve the above technical problems, the present invention provides an electromagnetic heating smoking device.

[0039] For details, see Figure 1 As shown, Figure 1 This is a cross-sectional view of an electromagnetic heating smoking device provided by the present invention.

[0040] The electromagnetic heating smoking device comprises:

[0041] The housing 1 is provided with a heating chamber 2, which is arranged at one end of the electromagnetic heating smoking device and is used to place cigarettes;

[0042] The electromagnetic coil 3 is disposed in the housing 1 and is also disposed on the outer wall of the heating chamber 2. The electromagnetic coil 3 is connected to an alternating current and is used to generate an alternating magnetic field using the alternating current.

[0043] The parameter acquisition module 4 is provided in the housing 1 and is used to acquire the magnetic field strength of the alternating magnetic field;

[0044] A driving device 5 connected to the electromagnetic coil 3;

[0045] The control module 6 is connected to the driving device 5 and is used to control the electromagnetic coil 3 to move in the housing 1 through the driving device 5 when the magnetic field strength is less than the preset magnetic field strength until the new magnetic field strength reaches the preset magnetic field strength.

[0046] The electromagnetic heating device comprises a housing 1, a heating chamber 2, an electromagnetic coil 3, a parameter acquisition module 4, a drive device 5, and a control module 6. It should be noted that one end of the housing 1 is provided with a recess, which serves as the heating chamber 2. The electromagnetic coil 3, parameter acquisition module 4, drive device 5, and control module 6 are all disposed within the housing 1. When the alternating current (AC) from the electromagnetic heating device passes through the electromagnetic coil 3 within the device, it generates a varying alternating magnetic field. When a cigarette is placed within the device, the ferromagnetic components within the cigarette generate eddy currents in the alternating magnetic field, inducing Joule heating and thereby heating the cigarette. The AC power for the electromagnetic heating device is supplied by a power module 7 within the device. This power module 7 includes a battery and an inverter circuit. The DC power from the battery is converted to AC power by the inverter circuit to power the electromagnetic coil 3. The inner diameter of the electromagnetic coil 3 is larger than the inner diameter of the heating chamber 2. The inner radius of the electromagnetic coil 3 can be greater than a predetermined length, for example, 0 to 3 mm, of the outer radius of the heating chamber 2 (including the wall thickness).

[0047] In addition, since the ferromagnetic elements contained in the cigarette will affect the alternating magnetic field generated by the electromagnetic heating smoking device, thereby changing the magnetic field strength at the location of the parameter acquisition module 4, and the magnetic field strength collected by the parameter acquisition module 4 will be different depending on the spatial position of the electromagnetic heating elements in the cigarette. In order to achieve the maximum heating efficiency of the electromagnetic heating smoking device when the position of the ferromagnetic elements in the cigarette deviates from the center position of the smoking section, this embodiment is provided with a parameter acquisition module 4 and a drive device 5 inside the shell 1. The parameter acquisition module 4 collects the magnetic field strength of the alternating magnetic field generated by the alternating current in real time. When the magnetic field strength is less than the preset magnetic field strength, the drive device 5 controls the electromagnetic coil 3 to move within the shell 1. During movement, the electromagnetic coil 3 can first move in one of the radial and axial directions, and then move in the other direction. The radial movement and the axial movement are independent of each other and do not interfere with each other. During movement, the electromagnetic coil 3 can also move in the radial and axial directions simultaneously until the new magnetic field strength reaches the preset magnetic field strength, that is, the heating efficiency of the electromagnetic heating smoking device is maximized.

[0048] In addition, the drive device 5 can also be connected to the parameter acquisition module 4. The control module 6 is specifically configured to control the electromagnetic coil 3 and the parameter acquisition module 4 to move synchronously within the housing 1 through the drive device 5 when the magnetic field strength is less than a preset magnetic field strength until the magnetic field strength reaches the preset magnetic field strength, thereby improving the accuracy and reliability of the magnetic field strength collected by the parameter acquisition module 4. The drive device 5 can be connected to the electromagnetic coil 3 and the parameter acquisition module 4 respectively via a connector 8.

[0049] It can be seen that this embodiment uses the parameter acquisition module 4 to collect the magnetic field strength of the alternating magnetic field generated by the electromagnetic coil 3 in the heating chamber 2. When a cigarette is placed in the heating chamber 2, the magnetic field strength collected by the parameter acquisition module 4 is the magnetic field strength of the position where the ferromagnetic element in the cigarette is located. Then, when the magnetic field strength of the position where the ferromagnetic element in the cigarette is located is less than the preset magnetic field strength, the control module 6 controls the electromagnetic coil 3 to move in the shell 1 through the drive device 5 until the new magnetic field strength is the preset magnetic field strength. At this time, the ferromagnetic element in the cigarette is in the center position of the alternating magnetic field, so as to achieve the maximum heating efficiency of the electromagnetic heating smoking device and improve the user's experience satisfaction.

[0050] Based on the above embodiment:

[0051] As an optional embodiment, the drive device 5 is also connected to the parameter acquisition module 4, and the control module 6 is specifically used to control the electromagnetic coil 3 and the parameter acquisition module 4 to move synchronously in the shell 1 through the drive device 5 when the magnetic field strength is less than the preset magnetic field strength until the magnetic field strength reaches the preset magnetic field strength.

[0052] Specifically, in order to improve the accuracy and reliability of the magnetic field strength collected by the parameter acquisition module 4 and maximize the heating efficiency of the electromagnetic heating smoking device, this embodiment connects the parameter acquisition module 4 to the drive device 5. When the magnetic field strength is less than the preset magnetic field strength, the control module 6 controls the electromagnetic coil 3 and the parameter acquisition module 4 to move synchronously in the shell 1 through the drive device 5 to ensure that the relative positions of the electromagnetic coil 3 and the parameter acquisition module 4 remain unchanged.

[0053] It can be seen that this embodiment connects the parameter acquisition module 4 to the drive device 5. When the magnetic field strength is less than the preset magnetic field strength, the control module 6 controls the electromagnetic coil 3 and the parameter acquisition module 4 to move synchronously in the shell 1 through the drive device 5, thereby improving the accuracy and reliability of the magnetic field strength collected by the parameter acquisition module 4 and ensuring that the heating efficiency of the electromagnetic heating smoking device reaches the maximum.

[0054] As an optional embodiment, the control module 6 is further configured to control the driving device 5 to stop running when the magnetic field strength reaches a preset blank magnetic field strength;

[0055] The preset blank magnetic field strength is the magnetic field strength collected by the parameter collection module 4 when no cigarette is placed in the heating chamber 2 .

[0056] Specifically, when no cigarette is placed in the heating chamber 2, the heating efficiency of the electromagnetic heating smoking device is 0, and whether the electromagnetic coil 3 moves will not affect the heating efficiency of the electromagnetic heating smoking device. In order to reduce the energy consumption of the electromagnetic heating smoking device, this embodiment uses the control module 6 to control the drive device 5 to stop running when the magnetic field strength is a preset blank magnetic field strength, that is, the control module 6 controls the drive device 5 to stop running when there is no need to move the electromagnetic coil 3 to improve the heating efficiency of the electromagnetic heating smoking device, so that the electromagnetic coil 3 stops moving. The preset blank magnetic field strength is the magnetic field strength collected by the parameter acquisition module 4 when no cigarette is placed in the heating chamber 2.

[0057] It can be seen that in this embodiment, when there is no need to move the electromagnetic coil 3 to improve the heating efficiency of the electromagnetic heating smoking device, the driving device 5 is controlled to stop running, so that the electromagnetic coil 3 stops moving, thereby reducing the energy consumption of the electromagnetic heating smoking device.

[0058] As an optional embodiment, the parameter acquisition module 4 includes:

[0059] A sensor is provided in the housing 1 and is used to collect the magnetic field strength of the alternating magnetic field;

[0060] A parameter conversion module is connected to the sensor and is used to convert the magnetic field strength into an electrical signal. The value of the electrical signal is positively correlated with the magnetic field strength, and the electrical signal is voltage / current.

[0061] Accordingly, when the magnetic field strength is less than the preset magnetic field strength, the driving device 5 controls the electromagnetic coil 3 to move in the housing 1 until the new magnetic field strength reaches the preset magnetic field strength, including:

[0062] When the electric signal is less than the preset electric signal threshold, the driving device 5 controls the electromagnetic coil 3 to move in the housing 1 until the new electric signal reaches the preset electric signal threshold, which corresponds to the preset magnetic field strength.

[0063] In this embodiment, the parameter acquisition module 4 includes a sensor and a parameter conversion module. The sensor is used to collect the magnetic field strength of the alternating magnetic field. The collected magnetic field strength is converted into an electrical signal through the parameter conversion module. If the electrical signal is a voltage, since the value of the electrical signal is positively correlated with the magnetic field strength, when the magnetic field strength is relatively large, the corresponding voltage value is also relatively large, and when the magnetic field strength is relatively small, the corresponding voltage value is also relatively small; if the electrical signal is a current, since the value of the electrical signal is positively correlated with the magnetic field strength, when the magnetic field strength is relatively large, the corresponding current value is also relatively large, and when the magnetic field strength is relatively small, the corresponding current value is also relatively small.

[0064] Furthermore, if the electrical signal is a voltage, when the voltage is less than a preset voltage threshold, the electromagnetic coil 3 is controlled by the driving device 5 to move in the shell 1 until the new voltage reaches the preset voltage threshold, and the preset voltage threshold corresponds to the preset magnetic field strength; if the electrical signal is a current, when the current is less than a preset current threshold, the electromagnetic coil 3 is controlled by the driving device 5 to move in the shell 1 until the new current reaches the preset current threshold, and the preset current threshold corresponds to the preset magnetic field strength.

[0065] It can be seen that this embodiment uses a sensor to collect the magnetic field strength of the alternating magnetic field, and converts the collected magnetic field strength into an electrical signal through a parameter conversion module. When the electrical signal is less than a preset electrical signal threshold, the driving device 5 controls the electromagnetic coil 3 to move in the shell 1 until the new electrical signal reaches the preset electrical signal threshold, so as to maximize the heating efficiency of the electromagnetic heating smoking device.

[0066] As an optional embodiment, the sensor is an induction coil, and the inner diameter of the induction coil is smaller than the inner diameter of the heating chamber 2 .

[0067] This embodiment uses an induction coil as a sensor, effectively detecting magnetic field changes over very short periods of time. Furthermore, the inner diameter of the induction coil is smaller than the inner diameter of the heating chamber 2. This means that for an induction coil of the same length, a smaller inner diameter induction coil has more turns and a higher turn density, resulting in higher accuracy and sensitivity in the magnetic field intensity detected by the sensor. For example, the inner diameter of the induction coil can be 0-2 mm smaller than the inner diameter of the heating chamber 2. Furthermore, the induction coil can have a length range of 2-5 mm and a number of turns greater than 10.

[0068] It can be seen that this embodiment uses the induction coil as a sensor, which can effectively detect magnetic field changes in a very short time, and the inner diameter of the induction coil is smaller than the inner diameter of the heating chamber 2, which improves the sensitivity and accuracy of collecting magnetic field strength.

[0069] As an optional embodiment, the axial direction of the induction coil is parallel to the axial direction of the electromagnetic coil 3 .

[0070] Specifically, when the axial direction of the induction coil is parallel to the axial direction of the electromagnetic coil 3 , the induction coil can sensitively detect changes in the magnetic field strength of the alternating magnetic field generated by the electromagnetic coil 3 , thereby improving the accuracy of the collected magnetic field strength.

[0071] It can be seen that in this embodiment, the axial direction of the induction coil is set parallel to the axial direction of the electromagnetic coil 3, so that the induction coil can sensitively detect the change in the magnetic field strength of the alternating magnetic field generated by the electromagnetic coil 3, thereby improving the accuracy of the collected magnetic field strength.

[0072] As an optional embodiment, the central axis of the induction coil is aligned with the central axis of the electromagnetic coil 3 .

[0073] Specifically, when the central axis of the induction coil is aligned with the central axis of the electromagnetic coil 3, the axial direction of the induction coil is parallel to the axial direction of the electromagnetic coil 3. The induction coil can evenly sense the alternating magnetic field, thereby more sensitively detecting changes in the magnetic field strength of the alternating magnetic field generated by the electromagnetic coil 3, thereby further improving the accuracy of the collected magnetic field strength.

[0074] It can be seen that in this embodiment, the central axis of the induction coil is set on the same line as the central axis of the electromagnetic coil 3. The induction coil can more sensitively detect the change in the magnetic field strength of the alternating magnetic field generated by the electromagnetic coil 3, further improving the accuracy of the collected magnetic field strength.

[0075] As an optional embodiment, the induction coil is a hollow coil.

[0076] Since the inside of the hollow coil is hollow, the inductance of the hollow coil is smaller than that of the solid coil, so the change of magnetic field strength can be detected more quickly. In addition, the hollow coil will not experience core saturation and has low core loss under high-frequency signals.

[0077] It can be seen that this embodiment uses an air-core coil as the induction coil, which has better high-frequency signal characteristics.

[0078] As an optional embodiment, the electromagnetic coil 3 is controlled to move in the housing 1 by the driving device 5 until the new magnetic field strength reaches the preset magnetic field strength, including:

[0079] The electromagnetic coil 3 is controlled by the driving device 5 to move in a first preset direction within the housing 1;

[0080] During the movement, if the difference between the new magnetic field strength and the preset magnetic field strength increases, the electromagnetic coil 3 is controlled to move in the opposite direction of the first preset direction; if the difference between the new magnetic field strength and the preset magnetic field strength decreases, the electromagnetic coil 3 is controlled to continue moving in the first preset direction;

[0081] If the new magnetic field strength reaches the preset magnetic field strength during the movement of the movable path in the first preset direction or the opposite direction of the first preset direction, the electromagnetic coil 3 is controlled to stop moving;

[0082] If the new magnetic field strength never reaches the preset magnetic field strength during movement along the movable path in the first preset direction or in the opposite direction of the first preset direction, determining a first position where the difference between the new magnetic field strength and the preset magnetic field strength is minimized;

[0083] Controlling the electromagnetic coil 3 to continue moving toward a second preset direction starting from the first position;

[0084] During the movement, if the difference between the new magnetic field strength and the preset magnetic field strength increases, the electromagnetic coil 3 is controlled to move in the opposite direction of the second preset direction; if the difference between the new magnetic field strength and the preset magnetic field strength decreases, the electromagnetic coil 3 is controlled to continue moving in the second preset direction;

[0085] If the new magnetic field strength reaches the preset magnetic field strength during the movement of the movable path in the second preset direction or the opposite direction of the second preset direction, the electromagnetic coil 3 is controlled to stop moving;

[0086] If the first preset direction is the axial direction of the electromagnetic coil 3 , the second preset direction is the radial direction of the electromagnetic coil 3 ; if the first preset direction is the radial direction of the electromagnetic coil 3 , the second preset direction is the axial direction of the electromagnetic coil 3 .

[0087] Specifically, since the first preset direction can be axial and radial, the second preset direction can be radial and axial, so the control module 6 is used to control the electromagnetic coil 3 to move in the shell 1 through the drive device 5 until the new magnetic field strength reaches the preset magnetic field strength. There are two specific implementation methods.

[0088] In a first specific embodiment, if the first preset direction is axial and the second preset direction is radial, the electromagnetic coil 3 is controlled by the driving device 5 to move axially in the shell 1 first. During the movement, if the difference between the new magnetic field strength and the preset magnetic field strength increases, it indicates that the direction of axial movement is wrong, and the electromagnetic coil 3 is controlled to move in the opposite direction of the axial direction; if the difference between the new magnetic field strength and the preset magnetic field strength decreases, it indicates that the direction of axial movement is correct, and the electromagnetic coil 3 is controlled to continue to move axially; if during the movement of the movable path in the axial or opposite direction of the axial direction, the new magnetic field strength reaches the preset magnetic field strength, it indicates that the heating efficiency of the electromagnetic heating smoking device reaches the maximum, and the electromagnetic coil 3 is controlled to stop moving; if during the movement of the movable path in the axial or opposite direction of the axial direction, the new magnetic field strength reaches the preset magnetic field strength, it indicates that the heating efficiency of the electromagnetic heating smoking device reaches the maximum, and the electromagnetic coil 3 is controlled to stop moving. The field strength has never reached the preset magnetic field strength, indicating that the electromagnetic coil 3 needs to be moved radially of the electromagnetic coil 3 to determine the first position where the difference between the new magnetic field strength and the preset magnetic field strength is the smallest; the electromagnetic coil 3 is controlled to continue to move radially with the first position as the starting point; during the movement, if the difference between the new magnetic field strength and the preset magnetic field strength increases, it indicates that the direction of radial movement is wrong, and the electromagnetic coil 3 is controlled to move in the opposite radial direction; if the difference between the new magnetic field strength and the preset magnetic field strength decreases, it indicates that the direction of radial movement is correct, and the electromagnetic coil 3 is controlled to continue to move radially; if during the movement of the movable path in the radial or opposite radial direction, the new magnetic field strength reaches the preset magnetic field strength, it indicates that the heating efficiency of the electromagnetic heating smoking device has reached the maximum, and the electromagnetic coil 3 is controlled to stop moving.

[0089] In a second specific embodiment, if the first preset direction is radial and the second preset direction is axial, the electromagnetic coil 3 is controlled by the driving device 5 to move radially in the shell 1 first. During the movement, if the difference between the new magnetic field strength and the preset magnetic field strength increases, it indicates that the direction of radial movement is wrong, and the electromagnetic coil 3 is controlled to move in the opposite radial direction; if the difference between the new magnetic field strength and the preset magnetic field strength decreases, it indicates that the direction of radial movement is correct, and the electromagnetic coil 3 is controlled to continue to move radially; if during the movement of the movable path in the radial or radial opposite direction, the new magnetic field strength reaches the preset magnetic field strength, it indicates that the heating efficiency of the electromagnetic heating smoking device reaches the maximum, and the electromagnetic coil 3 is controlled to stop moving; if during the movement of the movable path in the radial or radial opposite direction, the new magnetic field strength reaches the preset magnetic field strength, it indicates that the heating efficiency of the electromagnetic heating smoking device reaches the maximum, and the electromagnetic coil 3 is controlled to stop moving. The field strength has never reached the preset magnetic field strength, indicating that the electromagnetic coil 3 needs to be moved axially of the electromagnetic coil 3 to determine the first position where the difference between the new magnetic field strength and the preset magnetic field strength is the smallest; the electromagnetic coil 3 is controlled to continue to move axially with the first position as the starting point; during the movement, if the difference between the new magnetic field strength and the preset magnetic field strength increases, it indicates that the direction of axial movement is wrong, and the electromagnetic coil 3 is controlled to move in the opposite direction of the axial direction; if the difference between the new magnetic field strength and the preset magnetic field strength decreases, it indicates that the direction of axial movement is correct, and the electromagnetic coil 3 is controlled to continue to move axially; if during the movement of the movable path in the axial direction or the opposite direction of the axial direction, the new magnetic field strength reaches the preset magnetic field strength, it indicates that the heating efficiency of the electromagnetic heating smoking device has reached the maximum, and the electromagnetic coil 3 is controlled to stop moving.

[0090] It should be noted that, the driving device 5 can make the electromagnetic coil 3 move along the axial direction of the electromagnetic coil 3 a preset axial distance, for example, 0~3mm, that is, the driving device 5 can make the electromagnetic coil 3 move along the electromagnetic coil 3 toward the lip end of the electromagnetic heating smoking device a distance of 0~3mm, and can return to the reverse position; the driving device 5 can make the electromagnetic coil 3 move along at least one radial direction of the electromagnetic coil 3 and its reverse direction a preset radial distance, for example, 0~3mm, and can return to the position.

[0091] It can be seen that the control module 6 controls the electromagnetic coil 3 to move in one of the axial and radial directions in the shell 1 through the driving device 5 until the new magnetic field strength reaches the preset magnetic field strength. If the new magnetic field strength still does not reach the preset magnetic field strength, the first position where the difference between the new magnetic field strength and the preset magnetic field strength is determined to be the smallest, and the driving device 5 controls the electromagnetic coil 3 to continue to move in the other axial and radial direction with the first position as the starting point until the new magnetic field strength reaches the preset magnetic field strength, so that the heating efficiency of the electromagnetic heating smoking device is maximized.

[0092] The present invention also provides an electromagnetic heating system, comprising a cigarette and the electromagnetic heating smoking device as described above, wherein the cigarette comprises a smoking section and a ferromagnetic element disposed in the smoking section.

[0093] Specifically, the electromagnetic heating system includes a cigarette and an electromagnetic heating device. When a cigarette is inserted into the heating chamber 2 of the electromagnetic heating device, the electromagnetic coil 3 of the electromagnetic heating device can move radially and axially, positioning the ferromagnetic element of the cigarette at a position with the highest magnetic field intensity, thereby ensuring optimal electromagnetic heating. It should be noted that the ferromagnetic element has specific magnetic permeability and resistivity and can be in the form of a sheet or a rod.

[0094] In addition, for an introduction to the electromagnetic heating system provided by the invention, please refer to the above-mentioned embodiment of the electromagnetic heating smoking device, and the present invention will not be described in detail here.

[0095] It can be seen that this embodiment uses the parameter acquisition module 4 to collect the magnetic field strength of the alternating magnetic field generated by the electromagnetic coil 3 in the heating chamber 2. When a cigarette is placed in the heating chamber 2, the magnetic field strength collected by the parameter acquisition module 4 is the magnetic field strength of the position where the ferromagnetic element in the cigarette is located. Then, when the magnetic field strength of the position where the ferromagnetic element in the cigarette is located is less than the preset magnetic field strength, the control module 6 controls the electromagnetic coil 3 to move in the shell 1 through the drive device 5 until the new magnetic field strength is the preset magnetic field strength. At this time, the ferromagnetic element in the cigarette is in the center position of the alternating magnetic field, so as to achieve the maximum heating efficiency of the electromagnetic heating smoking device and improve the user's experience satisfaction.

[0096] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0097] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0098] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electromagnetic heating smoking device, characterized in that: include: A housing, wherein the housing is provided with a heating chamber, the heating chamber is provided at one end of the electromagnetic heating smoking device and is used for placing cigarettes; an electromagnetic coil, the electromagnetic coil being disposed in the housing and further disposed on an outer wall of the heating chamber, the electromagnetic coil being connected to an alternating current for generating an alternating magnetic field in the heating chamber using the alternating current; a parameter acquisition module, the parameter acquisition module being disposed in the housing and configured to acquire the magnetic field strength in the heating chamber; a driving device connected to the electromagnetic coil; a control module connected to the drive device, and configured to control the electromagnetic coil to move within the housing through the drive device when the magnetic field strength is less than a preset magnetic field strength, until a new magnetic field strength reaches the preset magnetic field strength; Controlling the electromagnetic coil to move within the housing by the driving device until the new magnetic field strength reaches the preset magnetic field strength includes: Controlling the electromagnetic coil to move in a first preset direction within the housing by the driving device; During the movement, if the difference between the new magnetic field strength and the preset magnetic field strength increases, the electromagnetic coil is controlled to move in the opposite direction of the first preset direction; if the difference between the new magnetic field strength and the preset magnetic field strength decreases, the electromagnetic coil is controlled to continue moving in the first preset direction; If the new magnetic field strength reaches the preset magnetic field strength during the movement of the movable path in the first preset direction or the opposite direction of the first preset direction, controlling the electromagnetic coil to stop moving; If the new magnetic field strength never reaches the preset magnetic field strength during movement along the movable path in the first preset direction or in the opposite direction of the first preset direction, determining a first position where the difference between the new magnetic field strength and the preset magnetic field strength is minimum; Controlling the electromagnetic coil to continue moving toward a second preset direction starting from the first position; During the movement, if the difference between the new magnetic field strength and the preset magnetic field strength increases, the electromagnetic coil is controlled to move in the opposite direction of the second preset direction; if the difference between the new magnetic field strength and the preset magnetic field strength decreases, the electromagnetic coil is controlled to continue moving in the second preset direction; If the new magnetic field strength reaches the preset magnetic field strength during the movement of the movable path in the second preset direction or the opposite direction of the second preset direction, controlling the electromagnetic coil to stop moving; If the first preset direction is the axial direction of the electromagnetic coil, the second preset direction is the radial direction of the electromagnetic coil; if the first preset direction is the radial direction of the electromagnetic coil, the second preset direction is the axial direction of the electromagnetic coil.

2. The electromagnetic heating smoking device according to claim 1, wherein: The driving device is also connected to the parameter acquisition module, and the control module is specifically used to control the electromagnetic coil and the parameter acquisition module to move synchronously in the shell through the driving device when the magnetic field strength is less than the preset magnetic field strength until the magnetic field strength reaches the preset magnetic field strength.

3. The electromagnetic heating smoking device according to claim 1, wherein: The control module is further configured to control the driving device to stop running when the magnetic field strength reaches a preset blank magnetic field strength; The preset blank magnetic field strength is the magnetic field strength collected by the parameter collection module when the cigarette is not placed in the heating chamber.

4. The electromagnetic heating smoking device according to claim 1, wherein: The parameter acquisition module includes: a sensor, the sensor being disposed in the housing and configured to collect the magnetic field strength of the alternating magnetic field; a parameter conversion module, connected to the sensor, for converting the magnetic field strength into an electrical signal, wherein the value of the electrical signal is positively correlated with the magnetic field strength, and the electrical signal is voltage / current; Accordingly, when the magnetic field strength is less than the preset magnetic field strength, the electromagnetic coil is controlled by the driving device to move in the housing until the new magnetic field strength reaches the preset magnetic field strength, including: When the electrical signal is less than a preset electrical signal threshold, the driving device controls the electromagnetic coil to move in the shell until the new electrical signal reaches the preset electrical signal threshold, and the preset electrical signal threshold corresponds to the preset magnetic field strength.

5. The electromagnetic heating smoking device according to claim 4, characterized in that: The sensor is an induction coil, and the inner diameter of the induction coil is smaller than the inner diameter of the heating chamber.

6. The electromagnetic heating smoking article according to claim 5, wherein: The axial direction of the induction coil is parallel to the axial direction of the electromagnetic coil.

7. The electromagnetic heating smoking article according to claim 6, wherein: The central axis of the induction coil is aligned with the central axis of the electromagnetic coil.

8. The electromagnetic heating smoking article according to claim 5, wherein: The induction coil is a hollow coil.

9. An electromagnetic heating system, characterized in that: The invention comprises a cigarette and the electromagnetic heating smoking device according to any one of claims 1 to 8, wherein the cigarette comprises a smoking section and a ferromagnetic element arranged in the smoking section.

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