Electromagnetic heating smoking set and electromagnetic heating system

Abstract

The invention discloses an electromagnetic heating smoking set and an electromagnetic heating system, and relates to the technical field of electromagnetic heating. The electromagnetic heating smoking set comprises a shell, an electromagnetic coil, a parameter acquisition module, a driving device and a control module; the parameter acquisition module acquires the magnetic field intensity in the heating cavity, and when the magnetic field intensity is smaller than the preset magnetic field intensity, the control module controls the electromagnetic coil to move in the shell through the driving device until the new magnetic field intensity reaches the preset magnetic field intensity. It can be seen that when the magnetic field intensity of the position where the ferromagnetic element in the cigarette is located is smaller than the preset magnetic field intensity through the control module, the electromagnetic coil is controlled by the driving device to move in the shell till the new magnetic field intensity is the preset magnetic field intensity, and at the moment, the ferromagnetic element in the cigarette is located in the center of the alternating magnetic field; the maximum heating efficiency of the electromagnetic heating smoking set is achieved, and the satisfaction degree of user experience is improved.

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 the electromagnetic heating device passes through the electromagnetic coil inside the electromagnetic heating device, a changing alternating magnetic field is generated. When the cigarette is placed in the electromagnetic heating device, the ferromagnetic element in the cigarette will generate eddy currents in the alternating magnetic field, causing Joule heating effect, thereby heating the cigarette. Since the alternating magnetic field generated by the electromagnetic coil has different magnetic field strengths at different positions in space, cigarettes are generally designed so that the cigarette is inserted into the heating chamber of the electromagnetic heating device. When the ferromagnetic element in the cigarette is at the position of maximum magnetic field strength, the heating efficiency of the electromagnetic heating device is the highest. Usually, the ferromagnetic element in the cigarette is located at the center of the smoking section. However, in the current production process of cigarettes, the position of the ferromagnetic element may deviate from the center of the smoking section. At this time, when the cigarette is inserted into the electromagnetic heating device for heating, since the ferromagnetic element is not at the position of maximum magnetic field strength, the electromagnetic heating device cannot achieve the 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 utilizes a control module to control the electromagnetic coil to move in a shell through a driving device when the magnetic field strength at the position of the ferromagnetic element in the cigarette is less than a 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 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 shell, wherein the shell is provided with a heating chamber, which is arranged at one end of the electromagnetic heating smoking device and is used for placing and heating cigarettes;

[0006] An electromagnetic coil, wherein the electromagnetic coil is disposed in the housing and is also disposed on an outer wall of the heating chamber, and the electromagnetic coil is connected to an alternating current to generate an alternating magnetic field in the heating chamber using the alternating current;

[0007] A parameter acquisition module, which is disposed in the housing and is used 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 driving device and is used to control the electromagnetic coil to move in the shell through the 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.

[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 a preset magnetic field strength until the magnetic field strength reaches the preset magnetic field strength.

[0011] Optionally, the control module is further used 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 is arranged in the housing and is used to collect the magnetic field strength of the alternating magnetic field;

[0015] A parameter conversion module, the 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;

[0016] Accordingly, when the magnetic field strength is less than the preset magnetic field strength, the electromagnetic coil is controlled to move in the housing by the driving device 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 on the same line as the central axis of the electromagnetic coil.

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

[0022] Optionally, controlling the electromagnetic coil to move in 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 in 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 to move in the first preset direction;

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

[0026] If the new magnetic field strength never reaches the preset magnetic field strength during the 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 the smallest;

[0027] Controlling the electromagnetic coil to continue to move 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 to move in the second preset direction;

[0029] If the new magnetic field strength reaches the preset magnetic field strength during the moving process in the movable path in the second preset direction or in 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 further 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 arranged in the smoking section.

[0032] The present application provides an electromagnetic heating smoking device and an electromagnetic heating system, the electromagnetic heating smoking device includes a shell, an electromagnetic coil, a parameter acquisition module, a driving device and a control module, wherein when an alternating current is passed through 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 shell through the 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. 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 the control module controls the electromagnetic coil to move in the shell through the driving 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 is the preset magnetic field strength, at which 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the prior art and the drawings required for use in the embodiments are briefly introduced below. 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 creative work.

[0034] Figure 1 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 utilizes a control module to control the electromagnetic coil to move in a shell through a driving device when the magnetic field strength is less than a preset magnetic field strength until the new magnetic field strength is 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] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0037] Since the alternating magnetic field generated by the electromagnetic coil has different magnetic field strengths at different positions 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 the highest when the ferromagnetic element in the cigarette is at the position of maximum magnetic field strength. Usually, the ferromagnetic element in the cigarette is at the center of the smoking section, but in the current production process of cigarettes, the position of the ferromagnetic element may deviate from the center of the smoking section. At this time, when the cigarette is inserted into the electromagnetic heating device for heating, since the ferromagnetic element is not at the position of maximum magnetic field strength, the electromagnetic heating device cannot achieve the 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 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 for placing cigarettes;

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

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

[0044] A driving device 5, the driving device 5 is 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 smoking device comprises a housing 1, a heating chamber 2, an electromagnetic coil 3, a parameter acquisition module 4, a driving device 5 and a control module 6. It should be noted that a groove is provided at one end of the housing 1, and the groove is the heating chamber 2. The electromagnetic coil 3, the parameter acquisition module 4, the driving device 5 and the control module 6 are all arranged in the housing 1. When the alternating current of the electromagnetic heating smoking device passes through the electromagnetic coil 3 in the electromagnetic heating smoking device, a changing alternating magnetic field is generated. When a cigarette is placed in the electromagnetic heating smoking device, the ferromagnetic elements in the cigarette will generate eddy currents in the alternating magnetic field, causing Joule heating effect, thereby heating the cigarette. The alternating current of the electromagnetic heating smoking device is provided by a power module 7 inside the electromagnetic heating smoking device. The power module 7 includes a battery and an inverter circuit. The direct current of the battery is converted into alternating current through 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 larger than the preset length of the outer radius of the heating chamber 2 (including the wall thickness), for example, 0 to 3 mm.

[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 position where the parameter acquisition module 4 is located, and the spatial positions of the electromagnetic heating elements in the cigarette are different, the magnetic field strength collected by the parameter acquisition module 4 is also different. In order to achieve the maximum heating efficiency of the electromagnetic heating smoking device when the position of the ferromagnetic elements of the cigarette deviates from the center position of the smoking section, the present embodiment sets a parameter acquisition module 4 and a driving device 5 inside the shell 1, and 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 driving device 5 controls the electromagnetic coil 3 to move in the shell 1. When moving, it can first move in one of the radial and axial directions of the electromagnetic coil 3, and then move in the other direction, and the radial movement and the axial movement are independent of each other and do not interfere with each other; when moving, it can also move in the radial and axial directions of the electromagnetic coil 3 at the same time until the new magnetic field strength reaches the preset magnetic field strength, that is, the heating efficiency of the electromagnetic heating smoking device reaches the maximum.

[0048] In addition, the driving device 5 can also be 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 housing 1 through the driving 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, thereby improving the accuracy and reliability of the magnetic field strength collected by the parameter acquisition module 4. Among them, the driving device 5 can be connected to the electromagnetic coil 3 and the parameter acquisition module 4 through the connecting piece 8 respectively.

[0049] It can be seen that the present embodiment utilizes the parameter acquisition module 4 to acquire 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 acquired 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 driving device 5 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 of the alternating magnetic field, so as to achieve the maximum heating efficiency of the electromagnetic heating tobacco device and improve the user's experience satisfaction.

[0050] Based on the above embodiments:

[0051] As an optional embodiment, the driving 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 driving 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, the parameter acquisition module 4 is connected to the drive device 5 in this embodiment. 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 driving 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 driving 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 used to control the driving device 5 to stop running when the magnetic field strength is 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 or not 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 collection 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, which is disposed in the housing 1 and is used to collect the magnetic field strength of the alternating magnetic field;

[0060] A parameter conversion module, the 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 electromagnetic coil 3 is controlled by the driving device 5 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 a 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 drive 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 drive 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, 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 means that for induction coils of the same length, the induction coil with a smaller inner diameter has more turns and a higher turn density, and the accuracy and sensitivity of the magnetic field intensity collected by the sensor are higher. For example, the inner diameter of the induction coil can be 0-2 mm smaller than the inner diameter of the heating chamber 2. In addition, the length of the induction coil can range from 2 to 5 mm, and the number of turns of the induction coil is greater than 10 turns.

[0068] It can be seen that this embodiment uses the induction coil as a sensor, which can effectively detect the 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 the 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 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.

[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 of 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 in line with the central axis of the electromagnetic coil 3 .

[0073] Specifically, when the central axis of the induction coil is in line 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, and the induction coil can uniformly sense the alternating magnetic field, so as to more sensitively detect the change 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 and the central axis of the electromagnetic coil 3 are arranged on a line, and 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 an 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 in 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 to move in the first preset direction;

[0081] If the new magnetic field strength reaches the preset magnetic field strength during the moving process in the first preset direction or the movable path in 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 the 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 the smallest;

[0083] Controlling the electromagnetic coil 3 to continue to move 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 to move in the second preset direction;

[0085] If the new magnetic field strength reaches the preset magnetic field strength during the moving process in the second preset direction or the movable path in 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 controls 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 the first specific implementation manner, 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 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 reaches the maximum, and the electromagnetic coil 3 is controlled to stop moving; 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 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 starting from the first position; 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 direction or the 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 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 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 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 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 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 to 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 to the lip end of the electromagnetic heating smoking device to 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 to a preset radial distance, for example, 0~3mm, and can return to the reverse 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 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 the smallest is determined, and the driving device 5 controls the electromagnetic coil 3 to continue to move in the other axial and radial direction starting from the first position 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 arranged in the smoking section.

[0093] Specifically, the electromagnetic heating system includes a cigarette and an electromagnetic heating smoking device. When the cigarette is inserted into the heating chamber 2 of the electromagnetic heating smoking device, the electromagnetic coil 3 of the electromagnetic heating smoking device can move along the radial and axial directions of the electromagnetic coil 3, so that the ferromagnetic element of the cigarette is at a position with the maximum magnetic field intensity, thereby ensuring the best electromagnetic heating effect. It should be noted that the ferromagnetic element has a specific magnetic permeability and resistivity, and the ferromagnetic element can be in the form of a sheet or a rod.

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

[0095] It can be seen that the present embodiment utilizes the parameter acquisition module 4 to acquire 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 acquired 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 driving device 5 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 of the alternating magnetic field, so as to achieve the maximum heating efficiency of the electromagnetic heating tobacco device and improve the user's experience satisfaction.

[0096] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0097] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used 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 "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0098] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but rather 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 shell, wherein the shell is provided with a heating chamber, and is arranged at one end of the electromagnetic heating smoking device and is used for placing cigarettes; An electromagnetic coil, wherein the electromagnetic coil is disposed in the housing and is also disposed on an outer wall of the heating chamber, and the electromagnetic coil is connected to an alternating current to generate an alternating magnetic field in the heating chamber using the alternating current; A parameter acquisition module, which is disposed in the housing and is used to acquire the magnetic field strength in the heating chamber; A driving device connected to the electromagnetic coil; A control module is connected to the driving device and is used to control the electromagnetic coil to move in the shell through the 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.

2. The electromagnetic heating smoking device according to claim 1, characterized in that: 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, characterized in that: The control module is also used to control the driving device to stop running when the magnetic field strength is 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 article according to claim 1, characterized in that: The parameter acquisition module comprises: A sensor, the sensor is arranged in the housing and is used to collect the magnetic field strength of the alternating magnetic field; A parameter conversion module, the 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; Accordingly, when the magnetic field strength is less than the preset magnetic field strength, the electromagnetic coil is controlled to move in the housing by the driving device 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, characterized in that: 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, characterized in that: 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, characterized in that: The induction coil is a hollow coil.

9. The electromagnetic heating smoking article according to any one of claims 1 to 8, characterized in that: Controlling the electromagnetic coil to move in the housing by the driving device until the new magnetic field strength reaches the preset magnetic field strength, comprising: Controlling the electromagnetic coil to move in a first preset direction in 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 to move in the first preset direction; If the new magnetic field strength reaches the preset magnetic field strength during the moving process in the movable path in the first preset direction or in the opposite direction of the first preset direction, the electromagnetic coil is controlled to stop moving; If the new magnetic field strength never reaches the preset magnetic field strength during the 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 the smallest; Controlling the electromagnetic coil to continue to move 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 to move in the second preset direction; If the new magnetic field strength reaches the preset magnetic field strength during the moving process in the movable path in the second preset direction or in 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.

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

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