RU2818720C1 - Heater frame integrated with coil winding guide - Google Patents

Abstract

FIELD: heat engineering.

SUBSTANCE: invention relates to heat engineering and can be used to heat an aerosol-forming substrate in aerosol generators. In an aerosol generator for receiving and heating a rod containing a portion of the aerosol medium and a core of a cooling tube, heater frame is made by extrusion and is integrated with guide for coil winding. Heater frame comprises a cylindrical frame housing, receiving a rod, a guide rib moulded with the frame housing and protruding from it in the longitudinal direction, and made with a guide groove, a coil inserted into the guide groove and wound along the outer circumference of the frame housing. Coil comprises a first heating coil for heating the rod of the cooling tube and a portion adjacent to a portion of the aerosol medium, and a second heating coil located below the first heating coil for heating only a portion of the aerosol medium. Invention also relates to aerosol generator heater frame.

EFFECT: simplified manufacture and assembly of aerosol generator and preservation and control of winding position and shape.

5 cl, 12 dwg

Description

TECHNICAL AREA

The present invention relates to a heater frame integrated with a coil winding guide.

PREREQUISITES FOR CREATION OF THE INVENTION

In FIG. 1 is a drawing of an induction heating device for heating an aerosol-forming substrate in accordance with the prior art, and FIG. 2 - drawing of an inductor, susceptor and magnetic field created by the inductor. The induction heating device 1 includes a device body 10, which may be made of plastic, and a DC power supply including a rechargeable battery 11a.

The induction heater 1 further includes a charging station for charging the battery 11a or a docking port 12 including a pin 12a for docking the induction heater to the charger. In addition, the induction heating device 1 includes power supply electronics 13 configured to operate at a desired frequency, for example, 5 MHz. The power supply electronics 13 is electrically connected to the rechargeable battery 11a through a suitable electrical connection 13a.

The tobacco-containing solid aerosol-forming substrate 20, including the susceptor 21, is placed in the cavity 14 at the proximal end of the housing of the device 10, so that during operation, the inductor L2 (spiral-wound cylindrical inductor L2) is inductively connected to the susceptor 21 of the tobacco-containing solid aerosol-forming substrate 20 of the smoking article 2. The filter part 22 of the smoking article 2 is located outside the cavity 14 of the induction heating device 1 so that during operation the consumer can exhale the aerosol through the filter part 22.

The induction heating device includes an inductor thermally adjacent to the aerosol-forming substrate, and the aerosol-forming substrate includes a susceptor. The alternating magnetic field in the inductor causes hysteresis losses and eddy currents in the susceptor, which cause the susceptor to heat the aerosol-forming substrate to a temperature capable of releasing volatile components capable of forming an aerosol.

At the same time, the heating efficiency of the induction heating device is proportional to the cross-sectional area through which the magnetic flux generated by the inductor coil L2 passes. In FIG. 2 shows that when a conventional cylindrical inductor L2 is arranged around the cylindrical suspensor 21, the magnetic flux in the inductor L2 is formed as shown by the arrow. The disadvantage of unevenly spaced inductors (L2) is that the heater heats up unevenly. If the guide winding is attached to the heater in such a way that the turns of the inductor L2 can be spaced at a certain distance from each other, heat from the heater is rejected to heat the guide winding.

FIG. 3 is a drawing of a heater frame and a coil guide of an aerosol generator in accordance with the conventional art, and FIG. 4 is a drawing of a coil winding wound on the frame of an aerosol generator heater in accordance with the conventional art.

According to the prior art, the winding guide 40 is connected to the cylindrical main frame 30, and the bobbin winding 50 is guided and wound by the winding guide 40. The winding guide 40 has a connecting portion 41 for connecting with the outer circumference of the main frame 30, a guide portion 42 extending in the longitudinal direction adjacent to the outer surface of the main frame 30, a rib 43 projecting from the guide portion 42, and a plurality of guide grooves 44 formed in the rib 43. The bobbin winding 50 is installed in the guide grooves 44, and the winding position of the bobbin winding 50 is adjustable. The cylindrical main frame 30 is installed in the frame opening 60.

References to prior art

Korean Registered Patent Publication 10-0385395

Korean Registered Patent Publication 10-1678335

Korean Open Patent Publication 10-2017-0007235

DISCLOSURE OF INVENTION

An object of the present invention is to provide a coil winding guide integrated with an induction heater frame, which is integrated with the main frame of the heater by thin-plate extrusion molding of a coil winding guide that maintains a constant distance between windings of an inductor coil.

According to an aspect of the present invention, there is an aerosol generator heater frame into which coils used for resistance heating or induction heating are wound, comprising a cylindrical frame body that is extruded from a thin plate, a guide rib molded integrally by extrusion of the frame body, and projecting longitudinally from it and a guide groove formed in the guide rib into which the spool is inserted and positioned when the spool is wound onto the frame body.

Also in other embodiments, the frame body is made of thin sheet metal with a thickness of 0.4 mm or less.

Also in other embodiments, the guide groove is formed by removing a portion of the guide rib by any of the following methods: cutting, lasering, blasting, or drilling.

According to another aspect of the present invention, there is an aerosol generator for receiving and heating a wand including a portion of the aerosol medium and a cooling tube rod including a guide coil integrated into a heater frame consisting of a cylindrical frame body receiving the wand, a guide fin integrally molded with the frame body and protruding therefrom in a longitudinal direction, a guide groove formed in the guide rib, and a coil inserted into the guide groove and wound around an outer circumference of the frame body, the coil including a first heating coil for heating the cooling tube rod and a portion adjacent to the aerosol medium portion , and a second heating coil located below the first heating coil to heat only a portion of the aerosol medium.

Also in other embodiments, the first heating coil has 2 to 4 windings and the second heating coil has 3 to 5 windings.

The heater frame integrating a coil winding guide presented in the present invention has the advantage that it can maintain the winding shape and control the winding position in one part by integrating the frame body including the heater and the coil winding guide, which fixes the winding position and squeezes it out into a thin plate.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a drawing illustrating an induction heating apparatus for heating an aerosol-forming substrate in accordance with the prior art;

In FIG. Figure 2 shows an inductor, a susceptor and the magnetic field created by the inductor;

In FIG. 3 shows a heater frame and a guide for winding an aerosol generator coil in accordance with the prior art;

In FIG. 4 shows a coil wound on a heater frame of an aerosol generator in accordance with the prior art;

FIG. 5 is a drawing of a heater frame integrated with a bobbin winding guide in accordance with one embodiment of the present invention;

FIG. 6 is a drawing of an extruded product before molding the guide grooves of a heater frame integrated with a coil winding guide according to one embodiment of the present invention;

FIG. 7 is a drawing schematically illustrating laser processing of guide grooves in the extruded product of FIG. 6;

FIG. 8 is a drawing schematically illustrating the press processing of guide grooves in the extruded product of FIG. 6;

FIG. 9 is a drawing schematically illustrating drilling of a guide groove in the extruded product of FIG. 6;

FIG. 10 is a drawing schematically illustrating cutting of a guide groove in the extruded product of FIG. 6;

FIG. 11 is a schematic drawing of an aerosol generator in accordance with one embodiment of the present invention;

FIG. 12 is a schematic drawing of an aerosol generator in accordance with the present invention for heating a stick having two separate parts of the aerosol medium.

BEST MODE FOR CARRYING OUT THE INVENTION

Next, preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 5 is a drawing of a heater frame integrated with a bobbin winding guide in accordance with one embodiment of the present invention.

A heater frame integrated with the bobbin winding guide 100, according to one embodiment of the present invention, includes a cylindrical body 110 extruded from a thin sheet, a guide rib 120 integrally molded and projecting in the longitudinal direction during extrusion of the body 110, and a guide groove 122 , formed in the guide rib 120 into which the coil is inserted and positioned as it is wound onto the housing 110.

At this time, the frame body 110 is formed by extruding a thin plate of 0.4 mm thickness, and the guide ribs 120 are formed as a unit simultaneously with the extrusion molding of the frame body 110.

The guide ribs 120 are formed by extrusion of the frame body 110, and the guide grooves 122 are formed by separate machining.

The guide ribs 120 are symmetrically formed in pairs at opposite positions on the frame body 110. Depending on the arrangement of the guide grooves 122, when the bobbin is wound onto the frame body 110, it is held inclined at a certain angle.

Preferably, the depth of the guide groove 122 is greater than the diameter of the spool so that the spool is fully inserted into the guide groove 122 and does not protrude beyond the guide rib 120.

Adjacent guide grooves 122 formed in the same guide rib 120 are spaced apart with a height difference h. The guide grooves 122 provided in different guide ribs 120 are formed in the middle position of adjacent guide grooves 122 of the other guide ribs 120, i.e. guide grooves 122 formed in one guide rib 120 and adjacent guide grooves 122 formed in another guide rib 120 have a height difference h/2.

FIG. 6 is a drawing illustrating an extruded product before forming a heater frame guide groove integrated with a coil winding guide in accordance with one embodiment of the present invention. After extrusion molding, only the guide ribs 120a protrude on the outer surface of the frame body 110a, and guide grooves are not formed. The guide grooves are formed by separate machining such as laser processing, press processing, drilling and cutting.

FIG. 7 is a drawing schematically illustrating laser processing of a guide groove in the extruded part of FIG. 6.

An extruded product with guide ribs 120a formed on the outer surface of the frame body 110a is placed in the jig and then grooved by a laser.

FIG. 8 is a drawing schematically illustrating the press processing of guide grooves in the extruded product of FIG. 6.

The extruded product with the guide ribs 120a formed on the outer surface of the frame body 110a is held in the jig, and then a portion of the guide ribs 120a is struck by a grooving press machine.

FIG. 9 is a drawing schematically illustrating drilling of a guide groove in the extruded product of FIG. 6.

The extruded product with the guide rib 120a formed on the outer surface of the frame body 110a is held in the jig, and then a portion of the guide rib 120a is drilled using a slotting drill.

FIG. 10 is a drawing schematically illustrating cutting of a guide groove in the extruded product of FIG. 6.

After both ends of the extruded product in which the guide rib 120a is formed are secured to the outer surface of the frame body 110a, the grooving tool is brought to the guide rib 120a while rotating at high speed. When the high-speed rotary tool contacts the guide rib 120a, a groove is formed by cutting to the shape of the tool.

FIG. 11 is a schematic drawing of an aerosol generator in accordance with one embodiment of the present invention.

An aerosol generator according to one embodiment of the present invention includes a heater frame integrated with a coil winding guide.

The wand used in the aerosol generator according to one embodiment of the present invention includes a cooling tube rod 22 for cooling the hot aerosol and aerosol medium portions 24 and 26. The aerosol media portions 24 and 26 include at least one aerosol media that is heated by the coils 52b, 54b and 56b to form an aerosol. FIG. 11 and 12 illustrate an embodiment having two separate aerosol media portions 24 and 26, in which the aerosol media portions 24 and 26 are separately temperature controlled by different coils, respectively.

As described previously, the heater frame integrated with the coil winding guide 100b includes a cylindrical frame body (not shown) into which a stick 20 is inserted, a guide rib (not shown) which is molded as an integral part of the frame body and extends longitudinally, and a guide a groove (not shown) made into the guide rib.

Reels 52b, 54b and 56b are inserted into guide slots (not shown) to be wound around the outer circumference of the frame body (not shown) when directed to the winding positions.

The coils 52b, 54b and 56b are configured separately, with the upper coil portion 52b and 54b heating the upper aerosol media portion 24 and the lower coil portion 56b heating the lower aerosol media portion 26.

In this case, the upper parts of the coils 52b and 54b are composed of a first heating coil 52b that heats the portion adjacent to the cooling tubular rod 22 and the upper part of the aerosol medium 24, and a second heating coil 54b that is located at the lower end of the first heating coil 52b and heats only the upper part of the aerosol medium 24.

In this case, the number of turns of the first heating coil 52b is preferably 2 to 4 times greater, and the number of turns of the second heating coil 54b is preferably 3 to 5 times greater.

The coils 52b, 54b and 56b may be conventional resistive heating coils, or they may be induction heating coils that inductively heat the frame body (not shown) when the frame body (not shown) is made of a current collector.

By separately forming the upper coil portions 52b and 54b as the first heating coil 52b and the second heating coil 54b, it is advantageous that the cooling tube rod 22 and the aerosol medium upper portion 24 can be intensely heated adjacent to each other during the initial heating, thereby increasing the amount aerosol during initial heating.

Although the present invention has been illustrated and described in connection with the accompanying drawings and preferred embodiments, the present invention is not limited thereto and is defined by the accompanying claims. Accordingly, one skilled in the art will appreciate that various modifications may be made thereto without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (11)

1. An aerosol generator heater frame in which coils used for resistance heating or induction heating are wound, comprising: - a cylindrical frame body of the frame, which is extruded from a thin sheet; - a guide rib integrated into the extrusion body of the frame and protruding from it in the longitudinal direction; And - a guide groove formed in the guide rib into which the coil is inserted and installed when the coil is wound onto the frame body. 2. The heater frame according to claim 1, wherein the frame body is made of thin sheet metal with a thickness of 0.4 mm or less. 3. The heater frame according to claim 1, wherein the guide groove is formed by removing part of the guide rib by any of the following methods: cutting, lasering, blasting or drilling. 4. An aerosol generator for receiving and heating a stick containing part of the aerosol medium and a cooling tube rod containing: - a heater frame integrated with the coil winding guide, including a cylindrical frame body receiving the stick, a guide rib integrally molded with the frame body and protruding therefrom in the longitudinal direction, and a guide groove formed in the guide rib; And - a coil inserted into the guide groove and wound around the outer circumference of the frame body, - in which the coil contains a first heating coil for heating the core of the cooling tube and the area adjacent to a part of the aerosol medium, and a second heating coil located below the first heating coil for heating only a part of the aerosol medium. 5. The aerosol generator according to claim 4, in which the first heating coil has from 2 to 4 windings, and the second heating coil has from 3 to 5 windings.

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