CN115413821A - Preheated water cigarette heating device - Google Patents

Abstract

The invention discloses a preheated hookah heating device which comprises a power supply driving device and a heating element, wherein the power supply driving device comprises a shell and a power supply driving module arranged in the shell, the heating element comprises a heating part, the heating part is arranged outside a bottom shell of the shell at intervals, a heating cavity is formed between the heating part and the bottom shell, an air inlet communicated with the outside is formed in the side wall of the heating cavity, a through air hole is formed in the heating part, the power supply driving module drives the heating part to generate heat, the hookah heating device can be arranged above a hookah and covers an inlet of the hookah, the heating part extends into the hookah and can heat a smog generating medium in the hookah, air enters the heating cavity from the air inlet to be heated by the heating element during smoking, and the heated air passes through the air hole to enter the hookah. Compared with the prior art, the invention has the advantages of high heating efficiency, smooth smoking and good smoking experience.

Description

Preheating hookah heating device

Technical Field

The invention relates to hookah heating, in particular to an electronic heating device for hookah heating.

Background

Referring to fig. 1, the water pipe type cigarette generally includes a container 11 for holding tobacco shreds 10 or tobacco paste, a bottle 12 for holding filtered water 121, and a pipe 122 disposed on the sidewall of the bottle 12, wherein the bottom of the container 11 is provided with a vent pipe 111 communicating with the interior of the container 11, and a filter pipe 13 communicating with the vent pipe 111 and the filtered water 121 in the bottle 12. When the cigarette holder is used, water is filled in the cigarette bottle 12, the filtered water 121 just flows over the filter pipe 13, the water level is not too high, the cigarette holder 11 is placed on the cigarette bottle 12, the vent pipe 111 of the cigarette holder 11 is inserted into the filter pipe 13, and the silica gel sealing ring 14 is arranged between the cigarette holder 11 and the upper portion of the cigarette bottle 12. Then, the tobacco shred 10 is put into the tobacco container 11, a small piece of tinfoil is used to wrap the whole tobacco container with the tobacco shred put on it, air holes are pricked on the tin foil, the burnt charcoal is put on the pricked tinfoil, the smoke tube 15 is inserted on the smoke tube 122, and the cigarette holder at the end of the smoke tube 15 can be taken up to smoke. When smoking, the charcoal heats the tobacco shred 10 in the container 11 through the tin foil to burn the tobacco shred, and when smoking from the outside of the smoking pipe 15, air enters the container 11 through the pores on the tin foil, passes through the tobacco shred 10, enters the filtered water 121 through the filtering pipe 13, is filtered, and then passes through the smoking pipe 15 from the smoke pipe 122 to be smoked.

However, the traditional hookah heating technology is complex in operation, and the temperature of charcoal is uncontrollable, so that the smoke smell is not strong enough. In addition, the charcoal burns to generate harmful gas in the smoking process, the charcoal is harmful to human bodies after being inhaled, and the charcoal burns to be in an open fire state, so that fire disasters are easy to generate. Charcoal produces charcoal ash after burning, and pollutes the environment.

For this reason, patent CN203952409U discloses an electrically heated tobacco bowl, in which a heated metal tube is directly disposed at the bottom of the tobacco bowl, and an eddy current coil is wound on the heated metal tube, so that when in use, the heated metal tube can be directly heated by the eddy current coil, and the heated metal tube generates heat and scorches tobacco shreds. However, this kind of electricity adds hot water cigarette bowl and uses the back, is difficult to clear up the cigarette bowl, uses the back for a long time, piles up too much burnt cigarette stain under the cigarette bowl for cigarette bowl heating efficiency is extremely low, and the heating source is in the cigarette bowl bottom, and the difficult equilibrium of air gets into the department of heating, makes the degree of consistency of pipe tobacco burning not enough, and when especially the initial stage was smoked, the effect was very poor. And during smoking, outside cold air can directly get into in the cigarette bowl, influences the temperature of pipe tobacco department, and smoking experience is poor.

However, when the electronic water smoke carbon is used, on one hand, air holes in the tin foil can be blocked, so that air is difficult to enter a cigarette bowl, the smoking amount is limited, and when the electronic water smoke carbon is used for smoking by multiple people, the effect is poor; on the other hand, this kind of shredded tobacco for water pipes electron carbon can only be through heat conductivility heating tinfoil, then through the shredded tobacco of tinfoil heating, if current shredded tobacco for water pipes charcoal is the same, heating efficiency is poor, even in order to increase heating efficiency, often needs a power very big, and the very big transformer of volume supplies power.

Therefore, there is a need for a hookah heating device that can solve the above problems.

Disclosure of Invention

The invention aims to provide a hookah heating device which is high in heating efficiency, smooth in smoking and good in smoking experience.

In order to achieve the purpose, the invention discloses a hookah heating device which comprises a power supply driving device and a heating element, wherein the power supply driving device comprises a shell and a power supply driving module arranged in the shell, the heating element comprises a heating part, the heating part is arranged outside a bottom shell of the shell at intervals, a heating cavity is formed between the heating part and the bottom shell, an air inlet communicated with the outside is formed in the side wall of the heating cavity, a through air vent is formed in the heating part, the power supply driving module drives the heating part to generate heat, the hookah heating device can be arranged above a hookah and covers an inlet of the hookah, the heating part extends into the hookah and can heat a smoke generating medium in the hookah, air enters the heating cavity from the air inlet during smoking and is heated by the heating element, and the heated air passes through the air vent and enters the hookah.

Preferably, when the hookah heating device is installed on the cigarette holder, the heating part is sheet-shaped and is arranged at the inlet of the cigarette holder along the horizontal direction.

Preferably, a plurality of supporting legs are convexly arranged on the peripheral edge of the bottom shell, the heating element further comprises a peripheral edge surrounding the heating element, and the peripheral edge of the heating element can contact the tail ends of the supporting legs and form the air inlet hole between the supporting legs.

Preferably, the heating chamber is communicated with the air inlet holes through a plurality of guide channels, the guide channels are located above the outer side of the heating chamber and extend downwards gradually from outside to inside, convection of the air inlet holes of the heating chamber is prevented, and heated air is prevented from overflowing the heating chamber.

Specifically, the centre of drain pan to the protruding formation outer boss of stretching of heating member direction, heating portion is located in the middle of the heating member, the heating portion of heating plate is along sunken in order to form with outer boss interval relative inner groovy for the week of heating plate, outer boss stretches into the inner groovy, the heating chamber form in the mesa of outer boss with between the heating portion, guide channel form in the lateral surface of outer boss with between the cell wall of inner groovy.

Specifically, the lateral surface of outer boss is equipped with a plurality of conflict lugs around its circumference is protruding, outer boss passes through conflict lug contact the cell wall of inner groovy, the direction passageway is formed adjacent between the conflict lug.

More specifically, the drain pan is equipped with the supporting legs that a plurality of intervals set up along the protruding, heating element contactable the supporting legs is terminal and with form between the supporting legs the inlet port, the supporting legs with conflict lug crisscross setting, the air convection in the heating chamber is further reduced to this scheme.

More specifically, the distance between the outer side of the interference bump and the center of the bottom shell is greater than the distance between the inner side of the supporting leg and the center of the heat insulation chassis. This scheme makes outside air just be separated from the centre by the conflict lug when getting into from the inlet port, and is leading-in along conflict lug both sides.

Preferably, the bottom casing is a heat insulation bottom casing, and of course, the bottom casing may also be other heat-resistant casings or heat-preservation casings.

Specifically, the heat insulation chassis is a ceramic disc or a mica sheet, and can be made of other heat insulation high temperature resistant materials which do not insulate magnetism and do not induce magnetism.

Preferably, the heating part is an electric heating sheet, and the power supply driving module supplies power to the heating part and controls the heating element to generate heat.

Preferably, the heating portion is an electromagnetic induction member, and the power supply driving module provides a high-frequency alternating current signal to the heating portion so that the heating portion generates an eddy current effect to heat.

Preferably, the bottom of the heating portion of the heating plate is a flat plate parallel to the inlet of the cigarette holder, and the position of the bottom shell opposite to the heating portion is a flat plate, so that the heating cavity is flat.

Preferably, the circumference of the bottom of the hookah heating device is movably supported on the cigarette holder inlet and is in concave-convex fit with the cigarette holder inlet through the heating part.

Compared with the prior art, the hookah heating device for covering the cigarette container is arranged above the cigarette container inlet of the cigarette container, then the heating element for heating the tobacco shreds directly extends into the cigarette container, and the heating element extending into the cigarette container can be directly controlled to heat the tobacco shreds in the cigarette container during work, so that the heating efficiency is high. On the other hand, the heating cavity is formed between the heating element and the bottom shell of the power supply driving device, air entering the cigarette container must enter the heating cavity first to be preheated by the heating element, so that the air entering the cigarette container is hot air, and during smoking, the temperature stability of cut tobacco in the cigarette container is high, and the smoking experience is good.

Drawings

Fig. 1 is a structural view of a conventional hookah.

Fig. 2 is a perspective view of the power supply driving device of the present invention.

Fig. 3 is a plan view of the power supply driving device of the present invention.

Fig. 4 is an exploded perspective view of the power supply driving device of the present invention.

Fig. 5 is a structural view of the installation of the exciting coil and the electromagnetic shield sheet of the present invention.

Fig. 6 is a structural view of the exciting coil and the electromagnetic shielding sheet installed at another angle according to the present invention.

Fig. 7a is a block diagram of the power supply driving device of the present invention.

Fig. 7b is a structural diagram of a driving circuit according to an embodiment of the invention.

Fig. 7c is a block diagram of a driving circuit according to another embodiment of the present invention.

Fig. 7d is a block diagram of a driving circuit according to another embodiment of the present invention.

Fig. 7e is the main circuit diagram of the hookah heating device of the present invention.

Fig. 8 is a structural view of a hookah heating device according to a first embodiment of the present invention mounted on a hookah.

Figure 9 is a side view of a hookah heating apparatus according to a first embodiment of the present invention.

Fig. 10 is a structural view of an electromagnetic induction member in the first embodiment of the present invention.

Fig. 11 is a structural view of a hookah heating device mounted on a hookah in another embodiment different from the first embodiment of the present invention.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 8 and 9, the invention discloses a hookah heating device, which includes a power supply driving device 200 and a heating element 40, wherein the power supply driving device 200 includes a housing 20 and a power supply driving module 30 installed in the housing 20, the heating element 40 includes a heating portion 43, the heating portion 43 is installed outside a bottom shell 21 of the housing 20 at an interval, and a heating cavity 400 is formed between the heating portion 43 and the bottom shell 21, an air inlet 210 communicating with the outside is formed on a side wall of the heating cavity 400, a through air vent 41 is formed on the heating portion 43, the power supply driving module 30 drives the heating portion 43 to generate heat, the hookah heating device can be installed above a hookah 11 and cover an inlet of the hookah 11, the heating portion 43 extends into the hookah 11 and can heat a smoke generating medium 10 (cut tobacco or tobacco paste) in the hookah 11, air enters the heating cavity 400 from the air inlet 210 to be heated by the heating element 40 during smoking, and the heated air passes through the air vent 41 to enter the hookah 11.

In this embodiment, the heating element 40 is movably mounted on the cigarette holder 11 of the hookah and extends into the cigarette holder 11 to contact the aerosol 10 in the cigarette holder 11, and the power supply driving device 200 is movably mounted on the heating element 40 and can drive the heating element 40 to generate heat to heat the aerosol 10. Of course, the heating element 40 may also be installed (including fixed installation, snap installation, screw installation, etc.) at the bottom case 21 of the power supply driving device 200, and then the bottom case 21 of the power supply driving device 200 is directly erected on the cigarette holder inlet of the cigarette holder 11. Of course, the hookah heating device may be mounted to the receptacle 11 by a heat resistant sleeve.

Referring to fig. 2 to 4, in the present embodiment, the power supply driving device 200 is an electromagnetic heater, the heating member 40 is an electromagnetic induction member, the power supply driving device 200 has an excitation coil 31 and a driving circuit 32, and the driving circuit 32 can drive the excitation coil 31 to emit a high-frequency alternating current signal to generate an eddy current effect on the heating member 40. Of course, unlike this embodiment, the heating portion 43 of the heating member 40 may also be a resistive heating member, such as a ceramic heating sheet, and the power supply driving device 200 supplies power to the heating portion 43 of the heating member 40 to cause the heating member 40 to generate heat. Of course, the heating element 40 may be other heaters that heat the aerosol generating article 10, and the heater may be directly driven by electricity without the need for other components to conduct heat energy. In the present embodiment, the heating part 43 of the heating member 40 is an integral member made of the same material as the other parts, and different from the present embodiment, the heating part 43 of the heating member 40 and the other parts of the heating member 40 may be fitted components made of different materials.

Specifically, the power supply driving module 30 is an electromagnetic heating body 30, the bottom shell of the casing 20 is an insulating bottom plate 21, the electromagnetic heating body 30 includes an excitation coil 31 and a driving circuit 32, the excitation coil 31 is sheet-shaped and is formed by gradually coiling a wire 311 outwards around a center, the excitation coil 31 faces the insulating bottom plate 21, and the driving circuit 32 controls the excitation coil 31 to emit a high-frequency alternating current signal outside the insulating bottom plate 21, so that the heating element 40 generates an eddy current effect. The excitation coil 31 is formed by winding a conducting wire 31 in a plane. The heat insulating chassis 21 serves to support the entire power supply driving module 30 and prevent heat of the heating member 40 from being conducted into the power supply driving module 30.

Of course, the bottom shell may not be a heat insulation bottom shell, and only the contact area between the shell 20 and the heating element 40 needs to be a high temperature resistant element.

Referring to fig. 8 and 9, the electromagnetic inductor 200 is movably mounted on the heating element 40, and the power supply driving device 200 and the air inlet 210 communicated with the outside are provided between the heating element 40, the air inlet 210 is further communicated with the heating chamber 40, one end of the heating chamber 400 is communicated with the air inlet 210, and one end of the heating chamber is communicated with the air vent 41, during smoking, external air enters the heating chamber 210 through the air inlet 41, and is heated by the heating element 40 at the heating chamber 210 and then enters the smoke container 11 through the air vent 41. Put power supply drive arrangement 200 on heating member 40 and open the switch, heating member 40 can produce the vortex effect and generate heat, if not smoking, then stay in the air of heating chamber 400 department and can heat under heating member 40 effect for the outside hot-air that is of electromagnetic induction spare, make when smoking on the one hand, the outside air that gets into in aerosol generator 10 is the warm air, and smoking is experienced well, and on the one hand, also make the temperature in the flourishing cigarette ware high enough and stable, the temperature variation of heating member 40 is little, and the burning of aerosol generator 10 is stable.

The heat insulation chassis 21 is convexly provided with a plurality of supporting legs 211 for supporting the housing 20, the supporting legs 211 can be supported on the cigarette holder 11, and an air inlet 210 communicated with the heating chamber 400 is formed between the adjacent supporting legs 211.

In this embodiment, the heating member 40 is a metal sheet that is installed at the inlet of the smoke container 11. The supporting leg 211 can be located at the edge of the heat insulation chassis 21, or at the middle position of the heat insulation chassis 21, and the heat insulation chassis 21 is suspended and erected on the smoke container.

Referring to fig. 1 and 8, during smoking, the driving circuit 32 may drive the exciting coil 31 to generate a high frequency ac signal so as to cause the heating element 40 to generate a vortex effect, so that the heating element 40 heats the aerosol 10 and the heating cavity 400, the aerosol 10 generates an aerosol, and when a person smokes the smoking pipe 15, air enters the heating cavity 400 from the air inlet 210, enters the smoking container 11 from the heating cavity 400 through the vent hole 41, and enters the smoke ventilating pipe 111 generated in the smoking container 11 into the filtering pipe 13, and enters the filtering water 121 from the filtering pipe 13 to be filtered, and then passes through the smoking pipe 15 from the smoking pipe 122 to be smoked.

Referring to fig. 8 and 10, in the present embodiment, the heating element 40 mounted on the cigarette holder 11 includes a peripheral edge 42 and a heating portion 43 with a downward concave middle, the peripheral edge 42 is supported on the edge of the cigarette holder inlet of the cigarette holder 11 and closes the peripheral edge of the cigarette holder inlet to prevent smoke from overflowing from the peripheral edge of the cigarette holder inlet, the lower surface of the central heating portion 43 is recessed in the cigarette holder 11 and cooperates with the peripheral edge 42 to make the heating element 40 form a bowl cover covering the cigarette holder 11 at the same time. In this embodiment, the heating portion 43 is a circular groove, and the heating portion may also be a polygonal groove or a groove with other shapes.

Referring to fig. 11, in another embodiment, the heating portion 43a may also be an annular groove, and in this case, the heating portion may extend below the top end of the ventilation pipe 111 of the smoking container or may extend above the ventilation pipe 111.

Wherein, the heating element 40 further comprises an operating handle 44 formed by extending the peripheral edge 42, and the user can use the clip to grip the operating handle 44 to remove the used heating element 40 from the cigarette holder 11. The operation handle 44 is provided with a hanging hole 441, and a user can hang the heating element 40 on the hook through the hanging hole 441 for storage.

In the present embodiment, the heating member 40 is stamped from a sheet metal (e.g., tinplate). Of course, the heating portion 43 of the heating member 40 may be made of other materials capable of performing electromagnetic induction, such as a stainless steel sheet, a stainless iron sheet, or other materials mixed with an electromagnetic induction metal material, and may be a sheet material or other shapes.

In one embodiment, in order to better cover the cigarette holder 11, the peripheral edge 42 of the heating element 40 is provided with a downward bent edge bent downward to wrap the peripheral edge of the cigarette holder 11, and an operating handle 44 is formed at the end of the downward bent edge.

Referring to fig. 2 and 3, the supporting legs 211 are distributed around the center of the heat insulation chassis 21, and a heating area corresponding to the position of the excitation coil 31 is formed in the middle surrounded by the supporting legs 211. Specifically, the supporting legs 211 are disposed at a position close to the edge of the heat insulation chassis 21.

Preferably, an outer boss 212 protrudes outward from the middle of the heat insulation base plate 21, a recess recessed at the periphery is formed in the housing 20 at the back of the outer boss 212, and the excitation coil 31 is installed in the recess.

Specifically, the horizontal plane on which the top surface of the outer boss 212 is located is lower than the tail end of the supporting leg 211, the supporting leg 211 is arranged at a position close to the edge of the heat insulation chassis 21 and distributed around the center of the heat insulation chassis 21, and when the supporting leg 211 is supported on the inlet of the smoke container 11, the outer boss 212 extends into the smoke container 11.

In this embodiment, the supporting leg 211 is supported on the peripheral edge 42 of the heating member 40, and the outer boss 212 extends into the recess of the central heating portion 43 to be engaged with the heating member 40.

Referring to fig. 2 and 3, the outer boss 212 is provided with a plurality of conflict lugs 213 along the outward protruding setting, conflict lug 213 with the supporting legs 211 sets up in a staggered manner, conflict lug 213 outside with the distance at thermal-insulated chassis 21 center more than or equal to the supporting legs 211 inboard with the distance at thermal-insulated chassis 21 center is less than the distance from the supporting legs 211 outside to the thermal-insulated chassis 21 center to conflict lug 213 outside end slope in order to form the guiding wall.

The heating portion 43 of the heating plate 40 is recessed relative to the peripheral edge 42 of the heating plate 40 to form an inner groove with a distance opposite to that of the outer boss 211, the outer boss 211 extends into the inner groove, the heating cavity 400 is formed between the table surface of the outer boss 211 and the heating portion 43, and the guide channel is formed between the outer side surface of the outer boss 211 and the groove wall of the inner groove.

Specifically, a plurality of guide passages are formed between the adjacent interference protrusions 213, specifically extending in the center line direction (longitudinal direction) of the cigarette holder 11, and the heating chamber 400 is formed between the outer boss 212 and the heating portion 43, and is located above the outside of the heating chamber 400. This arrangement requires that air first travel down the air inlet holes for a period of time to enter the heating chamber 400 horizontally. Wherein, the air intake holes 210 are located at the upper outer side of the heating chamber 400, and the guiding channel extends from the top to the bottom.

In this embodiment, the bottom of the heating portion 43 of the heating plate 40 is a flat plate shape parallel to the entrance of the cigarette container 11, and the position of the bottom case 21 opposite to the heating portion 43 is a flat plate shape, so that the heating cavity 400 is flat. Of course, the bottom of the heating portion 43 of the electromagnetic sensor 40 may have a tapered shape, a triangular shape inclined downward, a tapered shape, a spherical shape, an inverted tent shape, or the like, and is not limited to a sheet shape.

Preferably, the electromagnetic heating body 30 further includes a control unit 33 and a power supply unit, the power supply unit supplies power to the driving circuit 32, and the control unit 33 controls the driving circuit 32 to operate.

Referring to fig. 7a, there is shown a block diagram of an electrical circuit of the electromagnetic heating body 30 of the present invention. The power supply unit includes an electric storage battery 341, a charging management unit 342, a power management unit 343, and a dc interface 345, the dc interface 345 is connected to the electric storage battery 341 through the charging management unit 342, the charging management unit 342 manages charging and discharging of the electric storage battery 341, and the power management unit 342 converts electric energy in the electric storage battery into corresponding voltage and transmits the voltage to the driving circuit 32 to supply power to the driving circuit 32.

The power supply unit further includes an auxiliary power supply 344, the auxiliary power supply 344 is connected to the power management unit 342 through a power supply interface 347, the external commercial power is converted into a power supply voltage and transmitted to the power management unit 342, and the power supply voltage is converted into a corresponding voltage by the power management unit 342 and transmitted to the driving circuit 32 to supply power to the driving circuit 32.

The dc interface 345 is further connected to a power management unit 343, and the power management unit 343 converts the electric energy input by the dc interface 345 into a corresponding voltage and transmits the voltage to the driving circuit 32 to power the driving circuit 32. The dc interface 345 may be a USB interface, an mrico USB interface, a type-c interface, or other dc power supply interface. In this embodiment, the storage battery 341 is a lithium battery.

As described above, the present embodiment has three power input modes: the auxiliary power supply supplies power, the direct current interface supplies power and the storage battery supplies power. The control unit 33 is connected to the power management unit 342, and controls the power management unit 342 to select the power input mode according to the priority, where the priority is from top to bottom: the auxiliary power supply supplies power, the direct current interface supplies power, and the storage battery supplies power. The power management unit 342 designs different topologies, such as a pass-through mode, a boost mode, a buck mode, and a buck-boost mode, according to different input voltages.

Referring to fig. 7e, a schematic circuit diagram of the electromagnetic heating body 30 is shown, which includes three power inputs provided by the power supply unit: auxiliary power supply V _DC DC interface power supply V _USB And a storage battery supply V _BAT The power management unit 342 converts the electric energy input by different power input modes into the voltage required by the driving circuit 32, the driving circuit 32 controls the LC network to output a corresponding high-frequency ac signal under the control of the control unit 33, the LC network includes a resonant capacitor and a resonant inductor (excitation coil 31) connected in series, the LC network transmits the high-frequency ac signal to the heating member 40, and the heating member 40 receives the high-frequency ac signal to generate an eddy current effect, thereby generating heat. The electromagnetic heating body 30 further has a voltage detection circuit 331 and a current detection circuit 332, which collect the voltage across the LC network and the current on the exciting coil 31, respectively, and transmit the detected voltage and current to the control unit 33.

When a high-frequency ac signal is sent to heating element 40, an induced current is generated in heating element 40, and since the resistivity of heating element 40 changes with the temperature, the resistivity of heating element 40 changes linearly with the temperature in a normal temperature range, and the change relationship can be expressed as: ρ = ρ 0 (1 + α t), where ρ and ρ 0 are the resistivities at the current temperature t ° and 0 ℃ respectively; α is a temperature coefficient of the resistivity of the heating member 40, and t is a temperature value of the electromagnetic induction member. Therefore, the change in resistance of heating element 40 has a linear relationship with the change in temperature. Namely: t = (R-R0)/(R0 ×) where R and R0 are resistance values at the current temperature t ℃ and 0 ℃ respectively, and α is a temperature coefficient of resistivity of the heating member 40. According to the formula: as the temperature increases, the resistance of heating element 40 also increases; the current in the loop of the LC network is reduced, and the power fed back to the driving circuit 32 is reduced, i.e. the power in the driving loop of the LC network is reduced. The power of the drive loop is linear with the temperature of heating element 40. According to a power calculation formula P = UI: the heating element 40 temperature can be calculated by simply calculating the power of the drive circuit. The memory of the control unit 33 stores the current value, the voltage value, the power value, the coefficient of the power corresponding to the temperature, the set temperature and the like of the driving circuit corresponding to the temperature control, when the whole system is started, the control unit 33 obtains the current and the voltage in the driving circuit detected by the voltage detection circuit 331 and the current detection circuit 332 in real time, calculates the power of the driving circuit according to the current and the voltage, calculates the temperature of the heating element 40 according to the coefficient of the power corresponding to the temperature, compares the set temperature with the temperature of the heating element 40, and when the temperature of the heating element 40 is greater than the set value, the control unit 33 controls the driving circuit 32 to suspend outputting the control signal to the LC network, and the heating element 40 suspends heating. When the temperature of heating element 40 is less than the set value, drive circuit 32 continues to output a control signal to the LC network and heating element 40 continues to heat, thereby performing temperature control.

Preferably, in the temperature control process, the detected temperature of the heating element 40 is integrated in real time, the upper limit value and the lower limit value of the temperature integration are determined in advance, and when the temperature integration rapidly exceeds the upper limit value, smoking is determined, and the number of smoking openings is counted.

The control unit 33 includes an MCU, a switch button 333 and a detection circuit, wherein when the switch button 333 is pressed, a start command can be input, and the MCU performs a working state according to the start command to control the driving circuit 32 to work. Certainly, the MCU also detects whether there is an electromagnetic induction component through the detection circuit, and if not, the MCU enters a standby state to detect at a predetermined frequency, and enters a working state when the electromagnetic induction component is detected. The detection circuit comprises a voltage detection circuit 331 and a current detection circuit 332, and the MCU can judge whether the electromagnetic induction piece exists or not through the voltage and the current collected by the voltage detection circuit 331 and the current detection circuit 332. The MCU, the switch button 333, the detection circuit, and the driving circuit 32 are all mounted on the circuit board 26.

Referring to fig. 7b, in an embodiment, the driving circuit 32 is a full bridge driving circuit, which can greatly improve the working efficiency and save the energy consumption.

Wherein the drive circuitThe path 32 is composed of a MOS tube Q1, a MOS tube Q2, a MOS tube Q3 and a MOS tube Q4, and forms a main loop of the high-frequency signal generating circuit with the LC network. The LC network consists of a resonant capacitor C1 and a resonant inductor L1. The resonant inductor L1 is an inductor equivalent to the exciting coil 31, and R is a resistor equivalent to the electromagnetic inductor, and is configured to receive a high-frequency ac signal transmitted by the inductor L1 to generate heat. Wherein, LC network is series resonance network, and resonant frequency is:

when the control unit 33 controls the drive circuit 32 to act such that the frequency f = f0 of the drive signal, the circuit will resonate. The time sequence during operation is as follows: when the signal is positive for a half cycle, the current is VCC- > Q1- > C1- > L1- > Q4- > GND; when the signal is negative for half a week, the current is VCC- > Q2- > L1- > C1- > Q3- > GND.

Referring to fig. 7c, in another embodiment, the driving circuit 32 may be a half-bridge driving circuit.

The driving circuit 32 is composed of a MOS transistor Q5 and a MOS transistor Q6, and forms a main loop of the high-frequency signal generating circuit with the LC network. The LC network consists of a resonance capacitor C1 and a resonance inductor L1. The resonant inductor L1 is an inductor equivalent to the exciting coil 31, and R is a resistor equivalent to the electromagnetic inductor, and is configured to receive a high-frequency ac signal transmitted by the inductor L1 to generate heat. Wherein, LC network is series resonance network, and resonant frequency is:

when the control unit 33 controls the drive circuit 32 to act such that the frequency f = f0 of the drive signal, the circuit will resonate. The working time sequence is as follows: when the signal is positive for a half cycle, the current is VCC- > Q1- > C1- > L1- > GND; when the signal is negative for half a week, the current is from L1- > C1- > L1- > Q2- > GND.

Referring to fig. 7d, in yet another embodiment, the driving circuit 32 is a class E amplifying circuit.

The driving circuit consists of a MOS transistor Q7, a capacitor C2 and a high-frequency choke coil L0, and forms a main loop of the high-frequency signal generating circuit together with the LC network. The LC network is composed of resonance capacitor C1 and resonanceAn inductor L1. The resonant inductor L1 is an inductor equivalent to the exciting coil 31, and R is a resistor equivalent to the electromagnetic inductor, and is configured to receive a high-frequency ac signal transmitted by the inductor L1 to generate heat. Wherein, LC network is the series resonance network, and resonant frequency is:

when the control unit 33 controls the drive circuit 32 to act such that the frequency f = f0 of the drive signal, the circuit will resonate.

Referring to fig. 4 and 8, the housing 20 includes a top case 22, a bottom case 23, and a separation cover 24 installed between the top case 22 and the bottom case 23, a first chamber 201 for installing the control unit 33 and the power supply unit is formed between the top case 22 and the separation cover 24, a second chamber 202 for installing the excitation coil 31 is formed between the separation cover 24 and the bottom case 23, the separation cover 24 separates the first chamber 201 and the second chamber 202, and the heat insulation bottom plate 21 forms a bottom wall of the bottom case 23. The insulating cover 24 can effectively insulate the control power supply portion and the electromagnetic generating portion (exciting coil 31) of the electromagnetic heating body 30, reducing the thermal influence and the electromagnetic influence between the control power supply portion and the electromagnetic generating portion (exciting coil 31).

Referring to fig. 4 and 8, the middle of the isolation cover 24 is recessed toward the second chamber 202 to form an isolation cavity 203, the isolation cavity 203 is different from the first chamber 201, one side of the isolation cover 24 facing away from the isolation cavity 203 forms an inward boss 241 protruding outward, and the excitation coil 31 is installed between the inward boss 241 and the heat insulation bottom plate 21.

Referring to fig. 8, the exciting coil 31 is mounted on the inner boss 241 with a space from the insulating bottom plate 21.

In this embodiment, the edge of the isolation cover 24 has a plurality of mounting positions, the isolation cover 24 is mounted on the top case 22 through the mounting positions, the top case 22 and the bottom case 23 have mounting assemblies that are matched with each other, the top case 22 and the bottom case 23 are mounted together through the mounting assemblies, when the housing 20 is assembled, the control unit 33 and the power supply unit are mounted in the top case 22, the isolation cover 24 is mounted on the top case 22 to seal the first cavity 201, the excitation coil 31 is mounted on the inner boss 241 of the isolation cover 24, and the bottom case 23 is mounted on the top case 22 to seal the second cavity 202.

Referring to fig. 4 and 8, the lower case 23 includes a ring-shaped fixing frame 230 and an insulating pan 21 engaged with the ring-shaped fixing frame 230. Referring to fig. 4, the insulating base plate 21 is a ceramic plate. Of course, the insulating tray 21 may also be made of other non-magnetic non-metallic insulating materials, such as mica sheets, and is not limited to ceramic trays.

In this embodiment, the heat insulation chassis 21 is made of the same material and is made into an integral piece, in an embodiment, the position of the heat insulation chassis 21 in contact with the electromagnetic induction piece 40 is made of a heat insulation high temperature resistant material, the requirement on the high temperature resistant performance of the material at other places not in contact with the electromagnetic induction piece 40 is lower, and the heat insulation characteristic of the heat insulation chassis 21 is determined by a cavity formed by a heating cavity between the heat insulation chassis 21 and the electromagnetic induction piece 40.

Referring to fig. 2 to 4, a grip 25 is formed outside the housing 20.

Referring to fig. 5 and 8, an electromagnetic shield sheet 35 is disposed on a side of the exciting coil 31 away from the heat insulating bottom plate 21, and the exciting coil 31 is mounted on the electromagnetic shield sheet 35. The electromagnetic shielding sheet may effectively prevent the electromagnetic field of the exciting coil 31 from affecting the control power supply portion of the first chamber 201. The electromagnetic shielding sheet can be made of a high-permeability material and is used for shielding metal pieces in other directions from generating an eddy current phenomenon.

Referring to fig. 5 and 6, the electromagnetic shielding plate 35 is formed with a radius hole 351 extending from the edge to the center, and the excitation coil 31 is gradually coiled inward from the edge to the center along a first end thereof and then extends out of a second end of the excitation coil 31 along the radius hole 351.

Referring to fig. 5 and 6, the length (length in the width direction) of the cross section of the conductive wire 311 of the excitation coil 31 in the radial direction is larger than the length (length in the thickness direction) in the center line direction, and the surface where the thickness of the conductive wire 311 is located is opposed to the heat insulating bottom plate 21.

Preferably, referring to fig. 5 and 6, the conductive wire 311 of the exciting coil 31 is flat (the cross section may be rectangular, oval, etc.), and the flat surface thereof is opposite to the heat insulating bottom plate 21. Of course, the cross section of the conductive wire 311 of the excitation coil 31 may be triangular or trapezoidal. The conductive wire 311 of the excitation coil 31 may be composed of a conductor coated with an insulating layer, or may be composed of a plurality of conductors coated with an insulating layer.

In the above embodiment, the heat insulation chassis 21 of the power supply driving device 200 is indirectly erected on the smoke container 11 through the heating member 40, and the heat insulation chassis 21 and the heating member 40 have a concave-convex matching structure for limiting in the radial direction, so as to prevent the heat insulation chassis 21 from sliding out of the heating member 40 in the radial direction.

Of course, in other embodiments, the cross section of the wire of the excitation coil 31 may be circular or square.

In the above embodiment, the heating member 40 is covered on the container 11, and the container is communicated with the outside air through the vent hole 41.

Unlike the above-mentioned embodiment in which the power supply driving device 200 is movably erected on the heating element 40, the heating element 40 may also be directly detachably connected to the power supply driving device 200, for example, clamped to the bottom of the casing 20 of the power supply driving device 200, or screwed to the bottom of the casing 20 of the power supply driving device 200.

In the above embodiment, the heat insulating base plate 21 of the power supply driving device 200 and the heating portion 43 of the heating member 40 are spaced apart from each other to form a flat heating chamber 400.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.

Claims (12)

1. A hookah heating device that preheats which characterized in that: including power supply drive arrangement and heating member, power supply drive arrangement include the casing and install in power supply drive module in the casing, the heating member includes heating portion, heating portion interval install in outside the drain pan of casing, and make heating portion with form a heating chamber between the drain pan, have the inlet port with external intercommunication on the lateral wall in heating chamber, set up the air vent that runs through on the heating portion, power supply drive module drive heating portion generate heat, hookah heating device can install in flourishing cigarette ware top and cover flourishing cigarette ware entry, heating portion stretches into flourishing cigarette ware can produce the medium heating to the smog in the flourishing cigarette ware, during the smoking air by the inlet port gets into the heating chamber quilt heating member heating, the air after the heating passes the air vent gets into in the flourishing cigarette ware.

2. The hookah heating device of claim 1, wherein: when the hookah heating device is installed on the cigarette container, the heating part is in a sheet shape and is arranged at the inlet of the cigarette container along the horizontal direction.

3. The hookah heating apparatus of claim 1, wherein: the bottom shell is characterized in that a plurality of supporting legs are convexly arranged on the peripheral edge of the bottom shell, the heating element further comprises a peripheral edge surrounding the heating part, and the peripheral edge of the heating element can contact the tail ends of the supporting legs and form the air inlet hole between the supporting legs.

4. The hookah heating apparatus of claim 1, wherein: the heating chamber with through the direction passageway intercommunication between the inlet port, the direction passageway has a plurality ofly and is located heating chamber outside top, and from outside-in downwardly extending gradually.

5. The hookah heating device of claim 4, wherein: the middle of drain pan to the protruding formation outer boss that stretches of heating member direction, heating portion is located in the middle of the heating member, the heating portion of heating plate for the heating plate week along sunken in order form with outer boss interval relative inner groovy, outer boss stretches into the inner groovy, the heating chamber form in the mesa of outer boss with between the heating portion, guide way form in the lateral surface of outer boss with between the cell wall of inner groovy.

6. The hookah heating device of claim 5, wherein: the lateral surface of outer boss is equipped with a plurality of conflict lugs around its circumference is protruding, outer boss passes through conflict lug contact the cell wall of inner groovy, the direction passageway is formed adjacent between the conflict lug.

7. The hookah heating device of claim 6, wherein: the bottom shell is convexly provided with a plurality of supporting legs arranged at intervals along the peripheral edge, the heating element can contact the tail ends of the supporting legs and form the air inlet holes between the supporting legs, and the supporting legs and the abutting convex blocks are arranged in a staggered mode.

8. The hookah heating apparatus of claim 7, wherein: the distance between the outer side of the abutting convex block and the center of the bottom shell is larger than the distance between the inner side of the supporting leg and the center of the heat insulation chassis.

9. The hookah heating apparatus of claim 1, wherein: the bottom shell is a heat insulation chassis.

10. The hookah heating apparatus of claim 9, wherein: the heat insulation chassis is a ceramic disk or a mica sheet.

11. The hookah heating apparatus of claim 1, wherein: the heating part is an electric heating sheet, and the power supply driving module supplies power to the heating part and controls the heating part to heat; or, the heating part is an electromagnetic induction piece, and the power supply driving module provides a high-frequency alternating current signal for the heating part so that the heating part generates an eddy current effect to heat.

12. The hookah heating device of claim 1, wherein: the bottom of the heating part of the heating plate is in a flat shape parallel to the inlet of the cigarette container, and the bottom shell is in a flat shape at a position opposite to the heating part, so that the heating cavity is in a flat shape.

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