JP2022501008A - Heating type smoking equipment and its heating unit - Google Patents

Abstract

A heating type smoking device and a heating unit (2) thereof, including a heating member (21). The heating member (21) includes a sheet-shaped base material (212) and a conductive path (214) provided on the outside of the sheet-shaped base material. The conductive path (214) includes a heating resistance (2141) and an electrical connection that is electrically connected to the heating resistance (2141). The heating resistance (2141) and the electrical connection portion are arranged along the length direction of the sheet-like base material (212). Since no heating region is provided between the end of the second end where the mounting seat (23) is located and the conductive electrode (2142), the possibility of generating harmful gas is reduced. In addition, the range of material selection for the mounting seat is further expanded, resulting in cost reduction. There is a relatively large temperature gradient in the section of the heating member (21) corresponding to the heating resistance (2141) inserted into the tobacco leaf and the section corresponding to the conductive electrode (2142). The section corresponding to the conductive electrode (2142) has a relatively low temperature and has little heat dissipation, which is advantageous for effective use of energy. [Selection diagram] Fig. 2

Description

The present invention relates to a substitute for tobacco, and more specifically to a heated smoking device and a heating unit thereof.

Usually, the mounting seat of a general heating unit is laid down in the section where the electrode is located in the heating member. However, since the electrodes are relatively close to the heating resistance, the amount of heat is easily transmitted to the mounting seat when the heating resistance generates heat, and as a result of heat loss, the atomizing effect of the tobacco leaves is reduced. In addition, the mounting seat emits harmful gas when exposed to high temperatures, which affects the physical health of the user.

The technical problem to be solved by the present invention is to provide an improved heating type smoking device and a heating unit thereof.

The technical plan used by the present invention to solve the technical problem is as follows.

That is, it constitutes a heating unit for a heating type smoking device including a heating member. The heating member includes a sheet-shaped base material and a conductive path provided on the outside of the sheet-shaped base material.

The conductive path includes a heating resistor and an electrical connection that is electrically connected to the heating resistor.

The heating resistance and the electrical connection portion are arranged along the length direction of the sheet-shaped substrate.

Preferably, the heating unit further includes a mounting seat.

The mounting seat is laid on one end of the heating member where the electrical connection is located.

Preferably, a through hole is provided in a section of the sheet-shaped base material in the length direction in which the electrical connection portion is located.

Preferably, the electrical connection comprises two conductive electrodes that are electrically connected to the heating resistance. The lead wire is electrically connected to the conductive electrode. The lead wire is drawn along the length direction of the heating member toward one end on the side away from the heating resistance.

Preferably, the conductive electrode is formed by printing with a silver paste and then sintering.

Preferably, the lead wire is connected to the conductive electrode by high temperature brazing in a protective atmosphere of 600 to 1100 ° C. by a silver / copper welding material, a sterling silver welding material, or a nickel welding material.

Alternatively, the lead wire is connected to the conductive electrode by soldering with a high temperature solder paste.

Preferably, the sheet-like base material is made of a metal or an alloy. The heating member further includes an insulating layer that covers the sheet-like substrate, and the conductive path is provided outside the insulating layer.

Preferably, the thickness of the sheet-like substrate is 0.2 to 0.8 mm, and the thickness of the insulating layer is less than 0.1 mm.

Preferably, the insulating layer is formed by covering the surface of the sheet-like substrate with a glass paste containing silicon oxide, calcium oxide, and aluminum oxide and then sintering the surface.

Preferably, the insulating layer coats the sheet-like substrate by spraying or printing. The conductive path is located on the insulating layer on one side, and both sides of the sheet-like substrate are covered with the insulating layer.

Preferably, one end of the heating member on the side away from the mounting seat is provided with a sharp end that is advantageous for insertion into the heat stick in the chimney.

Preferably, the sheet-like base material uses stainless steel or a titanium alloy as a material, and is formed by stamping molding or wire cutting.

Preferably, the heating resistance is formed by printing with a silver-palladium resistor paste, a ruthenium-palladium resistor paste, a platinum paste, or a nickel-based paste and then sintering.

Preferably, the heating member further includes a separating layer that covers the outside of the conductive path.

The isolation layer is a glaze layer formed by firing a glass glaze, and the outer surface of the heating member is covered with the isolation layer.

Preferably, the mounting seat is injection molded using a high molecular polymer.

The present invention further provides a heated smoking device including the heating unit.

By implementing the heating type smoking device of the present invention and the heating unit thereof, the following beneficial effects can be obtained.

Since no heating region is provided between the end of the second end where the mounting seat is located and the conductive electrode, the possibility of generating harmful gas is reduced. In addition, the range of material selection for the mounting seat is further expanded, resulting in cost reduction. Among the heating members, there is a relatively large temperature gradient in the section corresponding to the heating resistance inserted into the tobacco leaf and the section corresponding to the conductive electrode. The section corresponding to the conductive electrode has a relatively low temperature and dissipates less heat, which is advantageous for effective use of energy.

Hereinafter, the present invention will be further described by combining drawings and examples.

FIG. 1 is a diagram showing a cross-sectional structure when a heating member of a heating type smoking device according to an embodiment of the present invention is inserted into a chimney provided with a heat stick. FIG. 2 is a diagram showing the structure of the heating unit of the present invention. FIG. 3 is a diagram showing a cross-sectional structure of the heating member of FIG. FIG. 4 is an exploded view of each layer of the heating unit in the present invention. FIG. 5 is a distribution diagram of a temperature field when the heat stick is heated when the sheet-like base material is a metal. FIG. 6 is a diagram showing a case where the width of the heating member of FIG. 2 gradually changes. FIG. 7 is a distribution diagram of a temperature field when the heat stick is heated when the heating member is zirconia.

Specific embodiments of the present invention will be described in detail with reference to the drawings so that the technical features, purposes and effects of the present invention can be more clearly understood.

As shown in FIGS. 1 and 2, the heating type smoking device in the preferred embodiment of the present invention includes a cylindrical chimney 1 and a heating unit 2. The heating unit 2 includes a heating member 21, a lead wire 22, and a mounting seat 23.

As shown in FIGS. 1 to 3, the heating member 21 has a sheet shape and is inserted into the chimney 1 so that it can be taken out. The heating member 21 includes two opposite first ends A and second ends B in the length direction, and the first end A is provided so as to extend outward. The heating member 21 can be inserted into the chimney 1 of the heating type smoking device from the first end A.

The heating member 21 includes two opposite first sides C and second sides D in the width direction. The first side C and the second side D are each provided with a retracting portion 211 that gradually reduces the thickness of the heating member 21 toward the edge in the width direction. The center line of the heating member 21 is located at the center of the chimney 1, and the two opposite sides of the heating member 21 in the width direction have the same distance to the inner wall surface of the chimney 1.

Since both sides of the heating member 21 are gradually reduced in thickness, the pressure from both sides of the heating member 21 to the tobacco leaves can be reduced when the heating member 21 is inserted into the heat stick 3. Therefore, the tobacco leaves on both sides corresponding to the retracted portion 211 are not compressed by a large pressing force, and the pressure of the tobacco leaves at the side end portions is relaxed, so that the atomization efficiency of the tobacco leaves is improved. Further, the retracting portion 211 may be gently continuous so that the tobacco leaves do not adhere to the side end faces of the heating sheet.

The heating member 21 includes two opposing first side Es and second side Fs in the thickness direction. The retracting portion 211 is a chamfered portion provided on the edge of the first side E and the second side F corresponding to the first side C, and the edge of the first side E and the second side F corresponding to the second side D. Including the chamfered portion provided in.

The chamfered portion includes a bevel angle or a round angle. A chamfered portion is provided on the edge of the first side E and the second side F of the first side C, respectively, and a chamfered portion is provided on the edge of the first side E and the second side F of the second side D, respectively. Has been. The first side C and the second side D of the heating member 21 are formed as round corner sides or acute angle sides by the retracted portion 211 of the first side C and the second side D.

In another embodiment, the retracting portion 211 is provided with a chamfered portion only on the edge of the first side E or the second side F corresponding to the first side C so that the retracting portion 211 can be easily formed by one stamping, and the second A chamfered portion may be provided only on the edge of the first side E or the second side F corresponding to the side D, and the first side C and the second side may be formed as acute-angled sides.

The retracting portions 211 on the two facing sides are gently continuous, smoothly polished, or provided with a glaze layer. As a result, it is possible to effectively prevent the adhesion of the tobacco leaves on the sides, and the pressing of the tobacco leaves is alleviated.

Further, in combination with FIG. 4, the heating member 21 includes a sheet-shaped base material 212 made of a metal material, an insulating layer 213 covering the sheet-shaped base material 212, and a conductive path 214 provided outside the insulating layer 213. The lead wire 22 is connected to the conductive path 214. Further, the lead wire 22 is pulled out to the outside. When the lead wire 22 receives electric power and the conductive path 214 is energized, the conductive path 214 generates heat and atomizes the tobacco leaves.

Preferably, the base material of the heating member 21 is made of a metal or an alloy. A general-purpose metal such as stainless steel or a titanium alloy may be used as the material for the sheet-like base material 212, and stainless steel such as SUS430 or SUS304 is preferable. Usually, the thickness of the sheet-shaped base material 212 is 0.2 to 0.8 mm, and it is formed by stamping molding or wire cutting, so that the cost is low. Since the retracting portion 211 of the sheet-shaped base material 212 made of a metal material can be formed by stamping, further cost savings can be achieved. The size such as the length and width of the heating member 21 corresponds to the diameter and length of the tobacco heat stick used in combination with the heating member 21, which is advantageous for sufficient heating of the tobacco leaves.

By using the sheet-shaped base material 212 made of a metal material as the main body of the heating member 21, high toughness is provided, so that it is possible to effectively prevent the heating member 21 from being torn due to mechanical impact such as high temperature for a long time or loading of cigarettes. Become. Moreover, since the sheet-like base material 212 made of a metal material has excellent thermal conductivity, the uniformity of the surface temperature of the heated sheet is guaranteed, and the non-combustible / heated tobacco is advantageous for obtaining a good mouthfeel.

As shown in FIGS. 5 and 7, from the steady-state simulation experiment, in the case of the same temperature field, the peripheral region of stainless steel exceeding 215 degrees is wider than that of the ceramic heating sheet such as zirconia. , The atomization efficiency is further improved, and the mouthfeel is further improved.

Preferably, the first end A of the sheet-shaped base material 212 is provided with a sharp end 215 that is advantageous for insertion into the heat stick 3. Since the sharp end 215 can guide the insertion of the heating member 21, the resistance force at the time of insertion is reduced.

In order to meet the technical requirements for printing the conductive path 214 on the sheet-like substrate 212, the sheet-like substrate 212 includes a flat surface 2121 located between the retracted portions 211 on two opposite sides of the heated sheet. A conductive path 214 is formed by printing in the region of the flat surface 2121. The retracting portion 211 is provided outward from two opposing sides of the flat surface 2121 in the width direction.

The insulating layer 213 is formed by covering the surface of the sheet-like base material 212 with a glass paste containing silicon oxide, calcium oxide, and aluminum oxide, and then sintering the sheet at 400 to 1000 ° C. Since the sheet-shaped base material 212 made of a metal or alloy is conductive, the insulating layer 213 makes it possible to prevent a short circuit between the sheet-shaped base material 212 and the conductive path 214.

The insulating layer 213 covers the sheet-like base material 212 by spraying or printing. The thickness of the insulating layer 213 may be designed based on the pressure resistance requirement between the conductive path 214 and the sheet-like base material 212, and the thickness of the insulating layer 213 is usually less than 0.1 mm.

It is preferable to coat both sides of the sheet-like base material 212 with the insulating layer 213 so that the sheet-like base material 212 made of a metal material does not oxidize during use at a high temperature. The conductive path 214 is located on the insulating layer 213 on one side. Therefore, the insulating layer 213 may be provided only on one side of the sheet-shaped base material 212 in order to provide the conductive path 214. Further, when the base material of the heating member 21 is a non-metal / non-conductive material, the insulating layer 213 may be omitted.

The conductive path 214 is used as an electric resistance heater and is a conductive layer that can be formed on the insulating layer 213 by a method such as physical vapor deposition, electroplating, or printing.

Preferably, the conductive path 214 includes a heating resistor 2141 and an electrical connection that is electrically connected to the heating resistor 2141. The heating resistance 2141 and the electrical connection portion are arranged along the length direction of the sheet-shaped base material 212. Further, the conductive electrode 2142 is connected to an external circuit. Preferably, the electrical connection includes two conductive electrodes 2142 that are electrically connected to the heating resistor 2141.

The lead wire 22 is connected to the conductive electrode 2142, and one end on the side separated from the heating resistance 2141 in the length direction of the heating member 21 is pulled out. That is, the heating resistance 2141 and the conductive electrode 2142 are arranged in the direction from the first end A to the second end B, and the lead wire 22 is drawn out from the second end B.

The heating resistance 2141 can be formed by printing with any one of silver-palladium resistor paste, ruthenium-palladium resistor paste, platinum paste, and nickel-based paste and then sintering. The pattern of the heating resistance 2141 can be flexibly installed, and an appropriate resistance value required by the heating member 21 is obtained in view of the characteristics of the paste and the thickness of the heating resistance 2141. Generally, the resistance value of the heating member 21 is between 0.3 and 2.0Ω. Usually, the thickness of the heating resistance 2141 is less than 0.1 mm, preferably less than 20 um. The conductive electrode 2142 is formed by printing with a silver-based paste having a relatively low resistivity and then sintering.

When the lead wire 22 is energized with an external power source, the heating resistor 2141 is energized and heat can be generated. The lead wire 22 can be connected to the conductive electrode 2142 by high temperature brazing in a protective atmosphere of 600 to 1100 ° C. depending on whether it is a silver / copper welding material, a sterling silver welding material, or a nickel welding material. Further, the lead wire 22 is connected to the conductive electrode 2142 by soldering with a high-temperature solder paste. The applicable temperature at this time is over 300 ° C.

Since the sheet-shaped base material 212 made of a metal material has excellent thermal conductivity, through holes 2122 are provided in the section of the sheet-shaped base material 212 in the length direction where the conductive electrode 2142 is located in order to prevent heat loss. There is. Since the heat can be cut off by the through hole 2122, the heat transferred to the second end B is reduced.

Since the temperature of the section corresponding to the conductive electrode 2142 is low and the tobacco leaves cannot be sufficiently atomized, the chopped tobacco at the site can accumulate and absorb a certain amount of tar. Therefore, it is possible to prevent or reduce the leakage of tar from the relevant portion.

There is a relatively large temperature gradient in the section of the heating member 21 corresponding to the heating resistance 2141 inserted into the tobacco leaf and the section corresponding to the conductive electrode 2142. The section corresponding to the conductive electrode 2142 has a relatively low temperature and has little heat dissipation, which is advantageous for effective use of energy.

In order to shield the heating resistance 2141 from the outside air and further enhance the service life and stability, the heating member 21 further includes an isolation layer 216 covering the outside of the conductive path 214.

The isolation layer 216 is a glaze layer formed by firing a glass glaze, and generally has a thickness of less than 0.1 mm. Both sides of the sheet-like base material 212 are covered with the isolation layer 216. Since the surface of the heated sheet is smoothed by the glaze layer and the roughness is reduced, the adhesion of tar and tar after roasting the tobacco leaves is reduced, and cleaning is facilitated. In other embodiments, only the side where the conductive path 214 is present may be covered with the isolation layer 216.

Preferably, as shown in FIG. 6, the heating member 21 gradually widens from the first end A to the second end B so that the heating member 21 can be easily inserted into the heat stick 3, and has a treasure sword shape. ing. Since the first end A is narrowed, the resistance force at the time of inserting the heating member 21 is reduced by combining with the thickening structure of the retracting portion 211. Therefore, it is easy to insert, and the situation where the tobacco leaves are concentrated on the side surface of the heating sheet can be effectively reduced. Further, since the bottom portion of the heating member is widened, it is advantageous for improving the strength of the heating sheet, and the breaking of the heating member due to being repeatedly inserted and removed from the heat stick is prevented.

Usually, the angle of the two opposite sides of the sharp end 215 in the width direction is larger than the angle of the two opposite sides of the second end B of the heating member 21 in the width direction. In other embodiments, the heating member 21 may be triangular.

As shown in FIG. 2, the mounting seat 23 is covered with the second end B of the heating member 21. That is, the lead wire 22 in the heating member 21 is covered at one end on the side to be drawn out, and is also covered at the electrical connection portion. In other embodiments, the mounting seat 23 may be independently mounted on the heating member 21 as an independent member.

The sharp end 215 is located at one end of the heating member 21 on the side away from the mounting seat 23. The mounting seat 23 and the sharp end 215 are located at both ends of the heating member 21 facing each other. When one end of the heating member 21 on the sharp end 215 side is inserted into the chimney 1, the mounting seat 23 comes into contact with the outer end of the chimney 1 to regulate the insertion depth of the heating member 21.

A through hole 2122 is provided in a section of the sheet-shaped base material 212 in the length direction in which the conductive electrode 2142 is located, and the heat transferred to the second end B is reduced, so that the temperature of the mounting seat 23 portion is raised. It is possible to prevent the situation where it becomes too high.

Since no heating region is provided between the end of the second end B where the mounting seat 23 is located and the conductive electrode 2142, the possibility of generating harmful gas is reduced. In addition, the range of material selection for the mounting seat 23 is further expanded, resulting in cost reduction. Usually, the mounting seat is injection-molded using a high molecular polymer, and commonly used materials include polyetheretherketone, high-temperature nylon and the like.

As can be understood, each of the above technical features can be used in any combination without limitation.

The above is merely an embodiment of the present invention, which does not limit the scope of rights of the present invention. Modifications to the equivalent structure or equivalent flow carried out using the contents of the specification and drawings of the present invention, or direct or indirect operation in other related technical fields, are all of the present invention for the same reason. Included in the scope of rights protection by.

Claims (16)

It is a heating unit (2) of a heating type smoking device,
Including the heating member (21)
The heating member (21) includes a sheet-shaped base material (212) and a conductive path (214) provided outside the sheet-shaped base material (212).
The conductive path (214) includes a heating resistor (2141) and an electrical connection that is electrically connected to the heating resistor (2141).
The heating unit (2) is characterized in that the heating resistance (2141) and the electrical connection portion are arranged along the length direction of the sheet-shaped substrate (212). The heating unit (2) further includes a mounting seat (23).
The heating unit (2) according to claim 1, wherein the mounting seat (23) is covered with one end of the heating member (21) where the electrical connection portion is located. The heating unit (2) according to claim 2, wherein a through hole (2122) is provided in a section of the sheet-shaped base material (212) in the length direction in which the electrical connection portion is located. ). The electrical connection includes two conductive electrodes (2142) that are electrically connected to the heating resistor (2141), and the lead wire (22) is electrically connected to the conductive electrode (2141), and the lead is connected. The heating according to claim 1, wherein the wire (22) is drawn toward one end on the side away from the heating resistance (2141) along the length direction of the heating member (21). Unit (2). The heating unit (2) according to claim 4, wherein the conductive electrode (2142) is formed by printing with a silver paste and then sintering. Whether the lead wire (22) is connected to the conductive electrode (2142) by high temperature brazing in a protective atmosphere of 600 to 1100 ° C. depending on whether it is a silver / copper welding material, a sterling silver welding material, or a nickel welding material. Or,
The heating unit (2) according to claim 4, wherein the lead wire (22) is connected to the conductive electrode (2142) by soldering with a high-temperature solder paste. The sheet-shaped base material (212) is made of a metal or an alloy, and the heating member (21) further includes an insulating layer (213) covering the sheet-shaped base material (212), and the conductive path (214). The heating unit (2) according to claim 1, wherein the heating unit (2) is provided on the outside of the insulating layer (213). The seventh aspect of the present invention, wherein the sheet-like base material (212) has a thickness of 0.2 to 0.8 mm, and the insulating layer (213) has a thickness of less than 0.1 mm. Heating unit (2). The insulating layer (213) is claimed to be formed by coating the surface of the sheet-like substrate (212) with a glass paste containing silicon oxide, calcium oxide, and aluminum oxide and then sintering the surface. Item 7. The heating unit (2) according to Item 7. The insulating layer (213) covers the sheet-like substrate (212) by spraying or printing, and the conductive path (214) is located on the insulating layer (213) on one side and the sheet-like group. The heating unit (2) according to claim 7, wherein both sides of the material (212) are covered with the insulating layer (213). One end of the heating member (21) on the side separated from the mounting seat (23) is provided with a sharp end (215) that is advantageous for insertion into the heat stick (3). The heating unit (2) according to claim 2. The heating unit (2) according to any one of claims 1 to 11, wherein the sheet-shaped base material (212) uses stainless steel or a titanium alloy as a material and is formed by stamping molding or wire cutting. ). The heating resistance (2141) is characterized in that it is formed by printing with a silver-palladium resistor paste, a ruthenium-palladium resistor paste, a platinum paste, or a nickel-based paste and then sintering. The heating unit (2) according to any one of 1 to 11. The heating member (21) further includes an isolation layer (216) that covers the outside of the conductive path (214).
The isolation layer (216) is a glaze layer formed by firing a glass glaze, and is characterized in that the outer surface of the heating member (21) is all covered with the isolation layer (216). The heating unit (2) according to any one of claims 1 to 11. The heating unit (2) according to claim 2, wherein the mounting seat (23) is injection-molded using a high molecular polymer. A heated smoking device comprising the heating unit according to any one of claims 1 to 15.

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