Improved electromagnetic emitter with magnetic shielding and electromagnetic induction eddy current heating function and electronic cigarette comprising electromagnetic emitter

Abstract

The utility model discloses an improved electromagnetic emitter with magnetic shielding and electromagnetic induction eddy current heating, the electromagnetic emitter comprises a magnetic shielding cover (1), a coil (2) and a coil support (3), the coil (2) comprises a coil main body (21) and a pair of coil pins (22), and the coil support (3) comprises a support wall (31), a support bottom (32) and pin through holes (33) which are connected. A pair of conductive pins (36) protruding downwards is arranged on the lower end face of the support bottom (32), the coil pins (22) penetrate out of the pin through holes (33) respectively and are welded to the conductive pins (36) respectively, and the coil body (21) is located in a coil space (14) defined by the coil support (3) and the magnetic shielding cover (1). The structure of the magnetic induction coil assembly is simplified, the magnetic shielding efficiency is improved, the provided electromagnetic emitter is high in integration degree, large-scale assembly production is facilitated, and the production efficiency of electronic cigarette appliances can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic cigarette equipment, especially a kind of electromagnetic transmitter with magnetic shielding applied to electronic cigarette of electromagnetic induction eddy current heating. BACKGROUND

[0002] The electronic cigarette equipment of tobacco oil type is an electronic product for generating steam by heating liquid tobacco oil, which can be used to replace traditional cigarettes. It is composed of battery, atomizer and tobacco oil tank. The battery provides power for the atomizer, and the atomizer atomizes the tobacco oil to generate steam for inhalation. Among them, the electromagnetic transmitter converts electrical energy into heat energy by electromagnetic induction principle to heat the liquid in the atomizer.

[0003] For example, the utility model patent CN 217038905U discloses an improved electromagnetic induction heating electronic cigarette, which comprises a shell, an electromagnetic heating assembly and a cleaning plate. The shell is internally provided with a containing cavity and a device cavity, and a storage battery and a control module are arranged in the device cavity. The electromagnetic heating assembly is arranged in the containing cavity and comprises a magnetic conducting sleeve, an isolation cylinder and an excitation coil. The magnetic conducting sleeve is movably arranged in the isolation cylinder, and the excitation coil is sleeved outside the isolation cylinder. The cleaning plate is arranged in the magnetic conducting sleeve, and the side wall of the cleaning plate is in contact with the inner wall of the magnetic conducting sleeve.

[0004] However, the coil and the isolation cylinder and other structures are complex, and the assembly contains multiple elements, so there are a large number of assembly operations in the production process of the electronic cigarette equipment, which significantly restricts the improvement of the production efficiency of the equipment. UTILITY MODEL CONTENT

[0005] The utility model aims to simplify the structure of the magnetic induction coil assembly, reduce the number of elements, improve the magnetic shielding efficiency, and provide a new electromagnetic transmitter.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an electromagnetic transmitter with magnetic shielding for electromagnetic induction eddy current heating, which comprises a magnetic shielding cover 1, a coil 2 and a coil support 3. The magnetic shielding cover 1 comprises a vertical wall 12 and a ring-shaped extension 11 located at the upper end of the vertical wall 12. The coil 2 comprises a coil body 21 made of wire and a pair of coil pins 22. The coil support 3 comprises a support wall 31 and a support bottom 32 located at the lower end of the support wall 31. The coil support 3 has a pin through hole 33. A pair of downward protruding conductive pins 36 are arranged on the lower end surface of the support bottom 32. The inner wall surface of the support wall 31 forms a cartridge passage 34 for the cartridge 100 to pass through.

[0007] The coil body 21 is placed on the coil support 3, and the inner diameter of the coil body 21 matches the support wall 31. The coil pins 22 pass through the pin through holes 33 and are respectively soldered to the conductive pins 36. The magnetic shield 1 is detachably placed on the coil support 3, and the inner diameter of the annular extension 11 matches the support wall 31. The lower end face of the vertical wall 12 abuts against the bottom 32 of the support, so that the coil body 21 is placed in the coil space 14 enclosed by the coil support 3 and the magnetic shield 1.

[0008] In this invention, for ease of description and not limitation, the direction toward the base 32 of the support is referred to as "down," and the direction toward the annular extension 11 is referred to as "up." The electromagnetic transmitter, as part of an electronic cigarette (also known as a smoke generator), is typically used in conjunction with a cartridge. Since the cartridge's external shape is usually a cylinder of a certain length, the axial direction of the coil support 3 is also referred to as the length direction.

[0009] In this invention, two coil pins 22 are each wound around a conductive pin 36. The ends of the coil pins 22 are welded and fixed to the conductive pins 36 and galvanized, thus constructing the coil 2 and the coil support 3 into a non-removable integrated component.

[0010] In this invention, the magnetic shield 1 is made of ferrite material.

[0011] To facilitate the connection of the coil pins to other components of the electronic cigarette, a notch is constructed in the base 32 of the bracket as a pin through hole 33, allowing the coil pins to pass through.

[0012] Since the outer shape of a cartridge is usually a cylinder of a certain length, the cross-sectional shape of the cartridge passage 34 is circular or approximately circular, or matches the cross-sectional shape of the cartridge shell 101.

[0013] When the cartridge casing 101 is made of a rigid material (such as food-grade PVC), in order to prevent the cartridge from slipping out when inserted into the electromagnetic transmitter, a preferred embodiment is to construct protrusions 35 along the length of the inner wall surface of the support wall 31. For example, there are three or more protrusions 35, evenly distributed on the inner wall surface of the support wall 31, so as to ensure that the cartridge is easy to insert and avoid falling out.

[0014] This invention also provides an electronic cigarette containing the above-mentioned electromagnetic transmitter.

[0015] As the heating element of an electronic cigarette, the electromagnetic transmitter generates heat and a magnetic field when direct current is input to the coil through its pins. Without a magnetic shield, metal components within the magnetic field (such as the metal casing of the electronic cigarette) cut through the magnetic field lines and generate heat, resulting in energy loss. This is detrimental to the rapid heating of the cartridge and negatively impacts the user experience.

[0016] The electromagnetic transmitter of this invention was assembled into an electronic cigarette device. Since the electromagnetic transmitter is in close contact with the inner wall of the electronic cigarette casing, the closest distance between the outer wall of the magnetic shield 1 and the metal casing of the electronic cigarette is only 0.1 mm. The inductance between a pair of coil pins was measured using an LCR device. After removing the magnetic shield 1, the inductance between the pins was measured again. The effect of the magnetic shield in the electromagnetic transmitter was investigated by observing the change in inductance. Experimental results show that the magnetic shield effectively shields the device, significantly reducing the cutting of magnetic lines of force by the metal material in the electronic cigarette casing, reducing energy loss within the device, and preventing excessive heating of the casing.

[0017] Compared with existing technologies, the electromagnetic transmitter of this invention has a high degree of integration, which facilitates large-scale assembly and production, and can effectively improve the production efficiency of electronic cigarette devices. Attached Figure Description

[0018] Figure 1A This is a schematic diagram of the magnetic shielding cover structure;

[0019] Figure 1B This is a cross-sectional view of the magnetic shielding cover;

[0020] Figure 2 This is a schematic diagram of the main structure of the coil;

[0021] Figure 3A This is a schematic diagram of the coil support structure;

[0022] Figure 3B This is a cross-sectional view of the coil support;

[0023] Figure 4A This is a schematic diagram of an electromagnetic transmitter.

[0024] Figure 4B This is a top view of the electromagnetic transmitter;

[0025] Figure 5A This is a schematic diagram of the magnetic field of an electromagnetic transmitter after it is powered on;

[0026] Figure 5B This is a schematic diagram of the magnetic field of a magnetic induction coil without a magnetic shield after it is energized;

[0027] Figure 6 This is a schematic diagram of the structure after the electromagnetic transmitter and smoke cartridge are assembled;

[0028] Wherein: 1-Magnetic shielding cover; 2-Coil; 3-Coil bracket; 11-Annular extension; 12-Vertical wall; 14-Coil space; 21-Coil body; 22-Coil pin; 31-Bracket wall; 32-Bracket bottom; 33-Pin through hole; 34-Cartridge passage; 35-Protruding ridge; 36-Conductive pin; 100-Cartridge; 101-Cartridge shell; 200-Metal shell. Detailed Implementation

[0029] The following embodiments are used to explain the technical solution of this utility model in a non-limiting manner.

[0030] Example 1

[0031] like Figure 6 The electromagnetic transmitter shown includes a magnetic shield 1 and a coil support 3 fitted together, wherein the magnetic shield 1 is made of ferrite material.

[0032] like Figure 1A , 1B As shown in 3A and 3B, the magnetic shield 1 has a vertical wall 12 and an annular extension 11 at its upper end, and the coil support 3 has a support wall 31 and a support base 32. The support base 32 has a pair of pin through holes 33, and a pair of conductive pins 36 are arranged near the pin through holes 33.

[0033] like Figure 2 The coil 2 shown is installed between the magnetic shield 1 and the coil support 3. The coil pins 22 pass through the pin through-holes 33 and are respectively soldered to the conductive pins 36 and galvanized. The coil body 21 is located within the coil space 14. The design of the conductive pins simplifies the electromagnetic transmitter, fixes the pin positions, and facilitates machining (such as robotic gripping), thereby effectively improving production efficiency.

[0034] The inner wall dimensions of the coil support 3 match the cartridge shell 101, and the inner wall surface of the support wall 31 has three protruding ribs 35 to ensure that the electromagnetic transmitter can be fitted onto the outer wall of the cartridge shell 101 and is not easily detached. Figure 6 As shown.

[0035] Connect the two input lines of the digital bridge tester to a pair of pins of the coil, inject 100kHz, 1V current into the coil, and test the Ls reading. With the magnetic shield 1 removed, the reading is 3.3μH. With the magnetic shield installed, the reading is 4.6μH. Installing the electromagnetic transmitter of this invention in a metal-cased electronic cigarette device and conducting power-on tests revealed a significant reduction in heat generation from the metal casing, further confirming that the electromagnetic transmitter of this invention can reduce energy loss within the device.

Claims

1. An improved electromagnetic transmitter with magnetic shielding and electromagnetic induction eddy current heating, the electromagnetic transmitter comprising a magnetic shield (1), a coil (2), and a coil support (3), characterized in that... The magnetic shield (1) includes a connected vertical wall (12) and an annular extension (11) located at the upper end of the vertical wall (12). The coil (2) includes a coil body (21) made of wire and a pair of coil pins (22). The coil support (3) includes a connected support wall (31) and a support bottom (32) located at the lower end of the support wall (31). The coil support (3) has pin through holes (33). A pair of downwardly protruding conductive pins (36) are provided on the lower end face of the support bottom (32). The inner wall surface of the support wall (31) forms a cigarette cartridge passage (34) through which the cigarette cartridge (100) passes. The coil body (21) is placed on the coil support (3), the inner diameter of the coil body (21) matches the support wall (31), the coil pins (22) pass through the pin through holes (33) and are respectively soldered to the conductive pins (36), the magnetic shield (1) is detachably placed on the coil support (3), the inner diameter of the annular extension (11) matches the support wall (31), the lower end face of the vertical wall (12) abuts against the bottom of the support (32), so that the coil body (21) is in the coil space (14) enclosed by the coil support (3) and the magnetic shield (1).

2. The improved electromagnetic transmitter with magnetic shielding and electromagnetic induction eddy current heating according to claim 1, characterized in that... The coil pin (22) is wound around the conductive pin (36), and the end is welded to the conductive pin (36) and galvanized.

3. The improved electromagnetic transmitter with magnetic shielding and electromagnetic induction eddy current heating according to claim 1, characterized in that... The magnetic shield (1) is made of ferrite material.

4. The improved electromagnetic transmitter with magnetic shielding and electromagnetic induction eddy current heating according to claim 1, characterized in that... A pair of notches are constructed on the bottom (32) of the support as pin through holes (33), with the pin through holes (33) adjacent to the conductive pins (36).

5. The improved electromagnetic transmitter with magnetic shielding and electromagnetic induction eddy current heating according to claim 1, characterized in that... The cross-sectional shape of the smoke cartridge passage (34) is circular.

6. The improved electromagnetic transmitter with magnetic shielding and electromagnetic induction eddy current heating according to claim 1, characterized in that... A protruding rib (35) is constructed along the length direction on the inner wall surface of the support wall (31).

7. The improved electromagnetic transmitter with magnetic shielding and electromagnetic induction eddy current heating according to claim 1, characterized in that... There are three or more protruding ridges (35), which are evenly distributed on the inner wall surface of the support wall (31).

8. An electronic cigarette containing an electromagnetic transmitter according to any one of claims 1-7.

Images