CN115413820A - Hookah electromagnetic heating device with replaceable heating sheet - Google Patents

Abstract

The invention discloses a hookah electromagnetic heating device with a replaceable heating piece, which comprises an electromagnetic heater and an electromagnetic induction piece, wherein the electromagnetic heater is movably erected on the electromagnetic induction piece or detachably connected with the electromagnetic induction piece, the electromagnetic induction piece is movably erected on a bowl opening of a hookah bowl and is provided with a through vent hole at a position above the bowl opening of the hookah bowl, the electromagnetic heater can send a high-frequency alternating current signal to the electromagnetic induction piece to enable the electromagnetic induction piece to generate a vortex effect to heat a smog generating object in the hookah bowl, an air inlet hole communicated with the outside is formed between the electromagnetic heater and the electromagnetic induction piece, and the air inlet hole is also communicated with the vent hole. The electromagnetic induction piece can be replaced quickly, and can be heated in an electromagnetic heating mode only by placing the electromagnetic induction piece on the cigarette bowl when in use, so that the heating efficiency is high, the electromagnetic induction piece is convenient to place, and the electromagnetic induction piece can be taken up quickly after use.

Description

Hookah electromagnetic heating device with replaceable heating sheet

Technical Field

The invention relates to hookah heating, in particular to a hookah electromagnetic heating device for heating hookah.

Background

Referring to fig. 1, the hookah generally comprises a bowl 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 bowl 11 is provided with a ventilation pipe 111 communicating with the inside of the bowl 11, and a filtering pipe 13 communicating with the ventilation pipe 111 and the filtered water 121 in the bottle 12. When the cigarette bowl is used, water is firstly filled in the cigarette bottle 12, the filtered water 121 just needs to submerge the filter pipe 13, the water level is not too high, the cigarette bowl 11 is placed on the cigarette bottle 12, the vent pipe 111 of the cigarette bowl 11 is inserted into the filter pipe 13, and the silica gel sealing ring 14 is arranged between the cigarette bowl 11 and the upper portion of the cigarette bottle 12. Then, the tobacco shred 10 is put into the tobacco bowl 11, the whole tobacco shred put into the tobacco bowl is wrapped by a small piece of tin foil, the air holes are pricked on the tobacco shred put into the tobacco bowl, the burnt charcoal is put on the tin foil pricked with the air holes, the smoke extraction pipe 15 is inserted on the smoke pipe 122, and then the cigarette holder at the tail end of the smoke extraction pipe 15 can be taken up to smoke. When smoking, the charcoal heats the tobacco shred 10 in the tobacco bowl 11 through the tin foil to burn the tobacco shred, and when smoking from the outside of the smoking pipe 15, air enters the tobacco bowl 11 through the air holes on the tin foil, passes through the tobacco shred 10, enters the filtered water 121 through the filter pipe 13, is filtered, and then passes through the smoking pipe 15 from the smoke pipe 122 to be smoked by people.

However, the traditional hookah heating technology is complex in operation, and the temperature of the 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 is easily generated. Charcoal produces soot after combustion, which 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, after the electric heating water tobacco bowl is used, the tobacco bowl is difficult to clean, after the electric heating water tobacco bowl is used for a long time, too much scorched tobacco stain is accumulated under the tobacco bowl, the heating efficiency of the tobacco bowl is extremely low, the heating source is arranged at the bottom of the tobacco bowl, air hardly enters the heating part in a balanced manner, the combustion uniformity of tobacco shreds is insufficient, and the effect is very poor when the tobacco shreds are sucked in the initial stage.

And chinese patent CN105336136A discloses an electronic hookah charcoal, which comprises a shell, a heating element accommodated in the shell, a heat transfer plate installed at the bottom of the shell, a silica gel sleeve sleeved below the shell, and a heat-resistant metal mesh installed on a cigarette holder. On one hand, the heating element of the electronic hookah carbon has a long distance with the tobacco shreds, and the heat transfer plates are arranged at intervals, so that the tobacco shreds are heated by heat transfer of the heat transfer plates, high heat is hardly provided for the tobacco shreds, and the using effect is poor. On the other hand, in order to effectively seal the cigarette holder to prevent smoke from overflowing from the top of the cigarette holder, the electronic hookah charcoal must be sleeved on the cigarette holder through a sealing sleeve such as a silica gel sleeve with a vent hole, and the silica gel sleeve needs to be sleeved every time the electronic hookah charcoal is used, so that the electronic hookah charcoal is inconvenient to use, and the silica gel sleeve is difficult to timely take down from the cigarette holder after the electronic hookah charcoal is used.

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 electromagnetic heating device with a replaceable heating sheet, which not only can quickly replace an electromagnetic induction piece and facilitate the cleaning and replacement of the electromagnetic induction piece, but also is convenient to use as long as the electromagnetic induction piece and an electromagnetic heater are erected on a cigarette bowl.

In order to achieve the purpose, the invention discloses a hookah electromagnetic heating device with a replaceable heating piece, which comprises an electromagnetic heater and an electromagnetic induction piece, wherein the electromagnetic heater is movably erected on the electromagnetic induction piece or detachably connected with the electromagnetic induction piece, the electromagnetic induction piece is movably erected on a bowl opening of a hookah bowl and is provided with a through vent hole above the bowl opening, the electromagnetic heater can send a high-frequency alternating current signal to the electromagnetic induction piece to enable the electromagnetic induction piece to generate a vortex effect to heat smoke generating objects in the hookah bowl, an air inlet hole communicated with the outside is formed between the electromagnetic heater and the electromagnetic induction piece, and the air inlet hole is also communicated with the vent hole.

Preferably, the electromagnetic induction piece is a tinplate stamping piece, is low in cost and can be replaced as a disposable product. Of course, the electromagnetic induction member may be a stainless steel sheet, a stainless iron sheet, or other metal material capable of performing electromagnetic induction, or an induction member mixed with an electromagnetic induction metal material.

Preferably, the edge of the electromagnetic induction piece supports the edge of the bowl opening and seals the peripheral edge of the bowl opening, the middle of the electromagnetic induction piece is recessed downwards to form a heating part extending into the cigarette bowl, and the vent hole is formed in the heating part.

Specifically, the heating part is a circular groove, a polygonal groove, or an annular groove.

Preferably, the electromagnetic heater comprises a shell and an electromagnetic heating body arranged in the shell, the shell comprises a heat insulation base plate, the electromagnetic heating body comprises an excitation coil and a driving circuit, the heat insulation base plate is opposite to the heating part of the electromagnetic induction part and forms the air inlet hole with the electromagnetic induction part, and the driving circuit controls the excitation coil to send out a high-frequency alternating current signal which can enable the electromagnetic induction part to generate an eddy current effect to the outside of the heat insulation base plate.

Preferably, an outer boss protrudes outwards from the middle of the heat insulation chassis, and the air inlet is higher than the outer boss.

Specifically, the periphery of thermal-insulated chassis is equipped with a plurality of supporting legss to the evagination, the supporting legs support in the periphery of electromagnetic induction spare is gone up and forms between adjacent supporting legs the inlet port.

More specifically, the centre undercut of electromagnetic induction spare stretches into in order to form the heating portion of cigarette bowl, electromagnetic heater's casing is including the thermal-insulated chassis that is located the bottom, thermal-insulated chassis outwards protruding be equipped with one with the unsmooth complex outer boss of depressed part of heating portion, outer boss week is formed with a plurality of guide lugs along outwards protruding the establishing, the guide lug with the supporting legs is crisscross to be set up, the guide lug outside with the distance at thermal-insulated chassis center is greater than the supporting legs inboard with the distance at thermal-insulated chassis center to the terminal slope in order to form the direction wall in the direction lug outside, the activity of thermal-insulated chassis is erect in the week of electromagnetic induction spare edge with the unsmooth cooperation of heating portion of electromagnetic induction spare.

Preferably, the shell of the electromagnetic heater comprises a heat insulation chassis located at the bottom, a space is formed between the heat insulation chassis and the heating part of the electromagnetic induction piece to form a heating cavity, an air inlet hole communicated with the outside is formed between the heat insulation chassis and the periphery of the electromagnetic induction piece, one end of the heating cavity is communicated with the air inlet hole, and the other end of the heating cavity is communicated with the air vent.

Preferably, the electromagnetic heating body further comprises a control unit and a power supply unit, the power supply unit supplies power to the driving circuit, and the control unit controls the driving circuit to act; the casing includes top shell, drain pan, and install in keep apart the lid between top shell and the drain pan, the top shell with keep apart and form the installation between the lid the first cavity of control unit and power supply unit, keep apart the lid with form the installation between the drain pan the second cavity of excitation coil, keep apart lid isolation and electromagnetic shield first cavity and second cavity, thermal-insulated chassis forms the diapire of drain pan.

More specifically, the middle of the isolation cover is recessed towards the second chamber to form an isolation cavity, the isolation cavity is different from the first chamber, one side of the isolation cover, which is back to the isolation cavity, forms an inward boss protruding outwards, and the excitation coil is installed between the boss and the heat insulation base plate.

More specifically, the excitation coil is mounted on the inner boss with a space from the heat insulating bottom plate.

Specifically, the bottom shell comprises an annular fixing frame and a heat insulation chassis clamped on the annular fixing frame.

Specifically, a grip for gripping is formed outside the housing.

Preferably, a smoke containing groove is formed in the electromagnetic induction part at the mouth of the tobacco bowl and used for containing smoke products, the vent hole is formed in the bottom of the smoke containing groove, air enters the smoke containing groove from the air inlet hole to assist combustion to generate smoke, and the generated smoke passes through the vent hole and enters the tobacco bowl and enters the tobacco bottle of hookah through the vent pipe in the tobacco bowl. This scheme makes the smog creature need not to place in the bowl of cigarette, can put on the electromagnetic induction spare, and the heating is convenient, efficient, and when clean, directly with the electromagnetic induction spare take off can, and be liable to change after the repetitious usage.

Compared with the prior art, the invention heats the smoke generating substances (tobacco shreds or tobacco paste) in the tobacco bowl in an electromagnetic heating mode, and the electromagnetic induction piece erected on the tobacco bowl is used as a heating piece to heat the smoke generating substances, so that the heating efficiency is high, and the power requirement on a power supply is low. On the one hand, the electromagnetic output part (electromagnetic heater) and the electromagnetic induction part (electromagnetic induction piece) are two independent parts, and the electromagnetic induction piece is detachably connected with the electromagnetic heater or completely independent, after the electromagnetic induction piece is used, the electromagnetic induction piece can be taken down alone for cleaning, and the cleaning is convenient and is easy to replace. Moreover, the electromagnetic induction part is directly and movably erected on the cigarette bowl, the cigarette bowl does not need to be sealed by a fixed sleeve or covered by a sealing cover, and the use is convenient. In addition, the electromagnetic induction piece of the invention only receives the high-frequency electromagnetic signal of the electromagnetic heater, thereby heating the temperature, and the electromagnetic induction piece for heating is not electrically connected with any circuit, thereby greatly improving the stability and the reliability of the system.

Drawings

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

Fig. 2 is a perspective view of the electromagnetic heater of the present invention.

Fig. 3 is a top view of the electromagnetic heater of the present invention.

Fig. 4 is an exploded perspective view of the electromagnetic heater 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 excitation coil and the electromagnetic shield plate installed at another angle according to the present invention.

Fig. 7a is a block diagram of the structure of the electromagnetic heater 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 structural 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 a circuit diagram of the main circuit of the hookah electromagnetic heating device of the present invention.

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

Figure 9 is a side view of a hookah electromagnetic heating apparatus in 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 electromagnetic heating device mounted on a hookah in another embodiment different from the first embodiment of the present invention.

Fig. 12 is a structural view of a hookah electromagnetic heating device mounted on a hookah according to a second embodiment of the present invention.

Fig. 13 is a structural view of a hookah electromagnetic heating device mounted on a hookah according to a third embodiment of the present invention.

Detailed Description

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

Referring to fig. 8 and 9, the invention discloses a hookah electromagnetic heating device, which comprises an electromagnetic heater 200 and an electromagnetic induction part 40, wherein the electromagnetic induction part 40 is movably arranged on a hookah bowl 11 of a hookah and can contact smoke products 10 (cut tobacco or tobacco paste) in the hookah bowl 11, the electromagnetic heater 200 is movably arranged on the electromagnetic induction part 40, a through vent hole 41 is formed in the electromagnetic induction part 40 above the bowl opening of the hookah bowl 11, and a high-frequency alternating current signal can be sent to the electromagnetic induction part 40 to enable the electromagnetic induction part 40 to generate an eddy current effect. The electromagnetic heater 200 has an exciting coil 31 and a driving circuit 32, and the driving circuit 32 can drive the exciting coil 31 to emit a high-frequency alternating current signal to generate an eddy current effect on the electromagnetic induction member 40.

The movable frame is a mounting structure which can slightly move (is not clamped) in the transverse direction (in the direction parallel to the bowl opening) and can be freely picked up in the longitudinal direction (in the direction parallel to the center of the cigarette bowl), so that the cigarette bowl 11 can be directly picked up without being driven when the electromagnetic induction piece 40 is picked up. The electromagnetic induction member 40 is separated from the electromagnetic heater 200, and the electromagnetic induction member 40 only needs one component capable of performing electromagnetic induction, such as a metal sheet, which is low in cost and easy to replace.

Referring to fig. 2 to 4, the electromagnetic heater 200 includes a housing 20 and an electromagnetic heating body 30 installed in the housing 20, the housing 20 includes a heat insulation chassis 21, the electromagnetic heating body 30 includes an exciting coil 31 and a driving circuit 32, the exciting coil 31 is in a sheet shape and is formed by a conducting wire 311 winding around a center and gradually winding outwards, the exciting coil 31 faces the heat insulation chassis 21, and the driving circuit 32 controls the exciting coil 31 to emit a high-frequency alternating current signal which can enable the electromagnetic induction member 40 to generate an eddy current effect to the outside of the heat insulation chassis 21. 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 driving module 30 and prevent heat of the heating member 40 from being conducted into the power driving module 30.

Referring to fig. 9, when the electromagnetic inductor 200 is movably mounted on the electromagnetic induction member 40, an air inlet 210 communicated with the outside is formed between the electromagnetic heater 200 and the electromagnetic induction member 40, and the air inlet 210 is further communicated with the vent 41. The heat insulation chassis 21 is provided with a plurality of support legs 211 for supporting the housing 20 in a protruding manner, and the support legs 211 can be supported on the cigarette bowl 11 and form an air inlet 210 communicated with the cigarette bowl 11 between the heat insulation chassis 21 and the cigarette bowl 11. The supporting legs 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 can be hung on the cigarette bowl only

Specifically, in the present embodiment, the electromagnetic induction member 40 is a metal sheet that is erected at the bowl mouth of the cigarette bowl 11.

Referring to fig. 1 and 8, during smoking, the driving circuit 32 may drive the excitation coil 31 to emit a high frequency ac signal to cause the electromagnetic induction member 40 to generate a vortex effect, so that the electromagnetic induction member 40 heats the aerosol 10, the aerosol 10 generates an aerosol, when a person smokes the smoking pipe 15, air enters the vent hole 41 from the air inlet 210, enters the smoking bowl 11 from the vent hole 41, enters the smoke vent pipe 111 generated in the smoking bowl 11 into the filter pipe 13, enters the filter water 121 from the filter pipe 13, and is 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 electromagnetic induction member 40 mounted on the smoking bowl 11 includes a peripheral edge 42 and a central heating portion 43 with a downward concave middle, and the peripheral edge 42 is supported on and seals the rim of the mouth of the smoking bowl 11 to prevent smoke from escaping from the rim of the mouth of the bowl. The lower surface of the central heating portion 43 is recessed in the smoking bowl 11, and cooperates with the rim 42 to make the electromagnetic induction member 40 form a bowl cover for covering the smoking bowl 11. In this embodiment, the heating portion 43 is a circular groove. Of course, the heating portion may be a polygonal groove or a groove having another shape. Of course, in another embodiment, the peripheral edge 42 of the electromagnetic heating element 40 is a plurality of supporting arms, does not cover the edge of the smoking bowl 11, and is only erected on the smoking bowl 11.

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 bowl or extend above the ventilation pipe 111. In this embodiment, the heating member 40 may be a single member, and the peripheral portion and the central portion of the heating member 40 are a single member made of the same material as the heating portion 43 a. In another embodiment, the heating member 40 may be a fitting member, the central portion and the heating portion 43a are made of different materials, and the central portion opposite to the air pipe 111 is made of a non-magnetic and heat-resistant material, such as a ceramic material.

Wherein, the electromagnetic induction member 40 further comprises an operating handle 44 formed by extending the peripheral edge 42 outwards, and the user can use the clamp to clamp the operating handle 44 to take the electromagnetic induction member 40 which is finished to be used off the smoking bowl 11. The operation panel 44 has a hanging hole 441, and the user can hang the electromagnetic induction piece 40 on the hook through the hanging hole 441 for storage.

In this embodiment, the electromagnetic induction member 40 is formed by punching a metal sheet (e.g., tinplate). Of course, the electromagnetic inductor 40 may be a metal sheet such as another stainless steel sheet or stainless iron sheet.

The heat insulation chassis 54 and the heating part 43 of the electromagnetic induction piece 40 are spaced to form a heating cavity 400, one end of the heating cavity 400 is communicated with the air inlet hole 210, and the other end of the heating cavity 400 is communicated with the vent hole 41, so that during smoking, external air enters the heating cavity 210 through the air inlet hole 41, and enters the smoking bowl 11 from the vent hole 41 after being heated by the electromagnetic induction piece 40 at the heating cavity 210. Put electromagnetic heater 200 on electromagnetic induction piece 40 and open the switch, electromagnetic induction piece 40 can produce the eddy current effect and generate heat, if not smoking, the air of staying heating chamber 400 department can heat under the effect of electromagnetic induction piece 40 for the outside hot air that is of electromagnetic induction piece makes during the smoking, the outside air that gets into in aerosol 10 is warm air, smoking is experienced well, on the one hand, also make the temperature in the bowl of cigarette high enough and stable, the temperature change of electromagnetic induction piece 40 is little, the burning of aerosol 10 is stable.

In one embodiment, in order to better cover the smoking bowl 11, the periphery 42 of the electromagnetic induction component 40 is further provided with a downward bent edge which is bent downwards to wrap the periphery of the smoking bowl 11, and the 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 back surface of the outer boss 212 in the housing 20, and the excitation coil 31 is installed in the recess.

Specifically, the horizontal plane of outer boss 212 mesa is less than supporting legs 211 is terminal, supporting legs 211 set up in the position that thermal-insulated chassis 21 is close to the border and around thermal-insulated chassis 21 central distribution, just supporting legs 211 support in when the bowl mouth of cigarette bowl 11 is gone up, outer boss 212 stretches into in the cigarette bowl 11.

In this embodiment, the supporting legs 211 are supported on the peripheral edge 42 of the electromagnetic sensor 40, and the outer bosses 212 extend into the recesses of the central heating portion 43 to be engaged with the electromagnetic sensor 40.

Referring to fig. 2 and 3, a plurality of guide protrusions 213 are formed on the outer boss 212 in a protruding manner, the guide protrusions 213 are staggered with the support legs 211, the distance between the outer sides of the guide protrusions 213 and the center of the heat insulation chassis 21 is greater than or equal to the distance between the inner sides of the support legs 211 and the center of the heat insulation chassis 21, and is smaller than the distance between the outer sides of the support legs 211 and the center of the heat insulation chassis 21, and the outer ends of the guide protrusions 213 are inclined to form guide walls.

Wherein, a plurality of guiding channels are formed between adjacent guiding lugs 213, the guiding channels extend along the central line direction (longitudinal direction) of the cigarette holder 11, the heating cavity 400 is formed between the outer boss 212 and the heating part 43, and the guiding channels are arranged above the outer side of the heating cavity 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 electromagnetic sensor 40 is a flat sheet 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 sheet, so that the heating chamber 400 is flat. Of course, the bottom of the heating portion 42 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 a 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 storage battery 341 through the charging management unit 342, the charging management unit 342 manages charging and discharging of the storage battery 341, and the power management unit 342 converts the electric energy in the 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, a mrico USB, a type-c, or other dc power supply interface. In the present 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, wherein 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, which is a schematic circuit diagram of the electromagnetic heating body 30, the circuit includes three power inputs provided by the power supply unit: auxiliary power supply V _DC DC interface power supply V _USB And storage battery supply V _BAT The power management unit 342 converts the electric energy inputted 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 electromagnetic induction member 40, and the electromagnetic induction member 40 receives the high-frequency ac signal to generate an eddy current effect, thereby generating heat. It is composed ofThe 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 transmitted to the electromagnetic induction element 40, an induced current is generated on the electromagnetic induction element 40, since the resistivity of the electromagnetic induction element 40 changes with the temperature, the resistivity of the electromagnetic induction 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 electromagnetic induction member 40, and t is a temperature value of the electromagnetic induction member. Therefore, the change in the resistance of the electromagnetic induction member 40 is linear with the change in temperature. Namely: t = (R-R0)/(R0 x α), where R and R0 are resistance values at the current temperature t ℃ and 0 ℃ respectively, and α is a temperature coefficient of the resistivity of the electromagnetic inductor 40. According to the formula: when the temperature rises, the resistance of the electromagnetic induction member 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 circuit is linear with the temperature of the electromagnetic induction member 40. The following is derived from the power calculation formula P = UI: the temperature of the electromagnetic induction member 40 can be calculated by calculating the power of the driving circuit. The current value, the voltage value, the power temperature coefficient, the set temperature, etc. of the driving circuit corresponding to the temperature control are stored in the memory of the control unit 33, after 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 electromagnetic induction element 40 according to the power temperature coefficient, compares the set temperature with the temperature of the electromagnetic induction element 40, and when the temperature of the electromagnetic induction 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 electromagnetic induction element 40 suspends heating. When the temperature of the electromagnetic induction member 40 is less than the set value, the driving circuit 32 continues to output the control signal to the LC network, and the electromagnetic induction member 40 continues to heat, thereby performing temperature control.

Preferably, in the temperature control process, the detected temperature of the electromagnetic induction part 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 operation of the driving circuit 32. Certainly, the MCU also detects whether there is an electromagnetic induction component through the detection circuit, and if not, it enters a standby state to detect with a preset frequency, and when detecting the electromagnetic induction component, it enters a working state. The detection circuit comprises a voltage detection circuit 331 and a current detection circuit 332, and the mcu can determine whether the electromagnetic induction element exists through the voltage and 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 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.

The driving circuit 32 is composed of a MOS transistor Q1, a MOS transistor Q2, a MOS transistor Q3, and a MOS transistor 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 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. The time sequence during operation is as follows: during the positive half cycle of the signal, the current is from VCC->Q1->C1->L1->Q4->GND; when the signal is negative half cycle, the current is from 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 the 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 half cycle, the current is from VCC-> Q1->C1->L1->GND; when the signal is negative half cycle, the current is increased 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 tube Q7, a capacitor C2 and a high-frequency choke coil L0, and forms a main loop of the high-frequency signal generating circuit with an 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.

Referring to fig. 4 and 8, the housing 20 includes a top case 22, a bottom case 23, and an isolation 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 isolation cover 24, a second chamber 202 for installing the exciting coil 31 is formed between the isolation cover 24 and the bottom case 23, the isolation cover 24 isolates the first chamber 201 from the second chamber 202, and the heat insulation bottom case 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 cavity 202 to form an isolation cavity 203, the isolation cavity 203 is different from the first cavity 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 then the bottom case 23 is mounted on the top case 22 to seal the second cavity 202.

Referring to fig. 4 and 8, the bottom case 23 includes a ring-shaped fixing frame 230 and an insulating bottom plate 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 insulating bottom tray 21 is made of the same material as a single piece, and in one embodiment, the position of the insulating bottom tray 21 in contact with the electromagnetic induction member 40 is as follows: the supporting leg 211 is made of a high temperature resistant material, and the material of other places not in contact with the electromagnetic induction member 40 has lower requirements on high temperature resistance.

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

Referring to fig. 5 and 8, an electromagnetic shielding 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 shielding sheet 35. The electromagnetic shielding sheet may effectively prevent the electromagnetic field of the exciting coil 31 from affecting the control power supply part 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 excitation coil 31 is flat (the cross section may be rectangular, oval, etc.), and the flat surface thereof is opposite to the heat insulation base 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 electromagnetic heater 200 is indirectly erected on the cigarette bowl 11 through the electromagnetic induction part 40, and the heat insulation chassis 21 and the electromagnetic induction part 40 have a concave-convex matching structure for radially limiting, so that the heat insulation chassis 21 is prevented from radially sliding out of the electromagnetic induction part 40.

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 electromagnetic induction member 40 is covered on the smoking bowl 11, and the smoking bowl is communicated with the outside air through the vent hole 41.

In the above embodiment, the electromagnetic heater 200 is movably mounted on the electromagnetic induction element 40, and different from the above embodiment, the electromagnetic induction element 40 may also be directly detachably connected to the electromagnetic heater 200, for example, being clamped to the bottom of the housing 20 of the electromagnetic heater 200, or being screwed to the bottom of the housing 20 of the electromagnetic heater 200.

In the above embodiment, the distance between the heat insulating base plate 21 of the electromagnetic heater 200 and the heating portion 43 of the electromagnetic induction member 40 is set to form a flat heating cavity 400, and unlike the above embodiment, the bottom of the induction member 40 and/or the heat insulating base plate 21 is provided with one or more grooves connected to the vent holes 41, one end of one groove is connected to the air inlet hole 210, and the other end is connected to one or more vent holes 41, so that the air inlet hole 210 and the vent holes 41 are connected through a vent channel, and there is no heating cavity.

Referring to fig. 12, a second embodiment of the present invention is different from the above-mentioned embodiment, in this embodiment, a smoke containing groove 43b for containing the smoke generating substance 10 is concavely arranged on the electromagnetic induction member 40b, a vent hole 41 communicated with the inside of the smoking bowl 11 is arranged at the bottom of the smoke containing groove 43b, after air enters the smoke containing groove 43b to assist the combustion of the smoke generating substance 10, smoke passes through the vent hole 41 and enters the smoking bowl 11, and enters the smoking bottle 12 of the hookah through a vent pipe 111 in the smoking bowl 11.

The electromagnetic induction piece 40c is spaced from the ventilation pipe 111 in the smoking bowl 11. The smoke containing recess 43b also constitutes a heating portion 43b of the electromagnetic induction member 40 b.

Preferably, the heat insulation chassis 21 of the electromagnetic inductor 200 is erected on the electromagnetic induction piece 40b, and an air inlet (between the adjacent supporting legs 211) communicating with the outside is formed between the heat insulation chassis and the electromagnetic induction piece 40b, and the air inlet is communicated with the smoke containing groove 43b. The heating portion 43b is engaged with an outer boss 211 of the heat insulating base plate 21 in a concave-convex manner.

In order to prevent the smoke from overflowing, the heat insulation chassis 21 of the electromagnetic inductor 200 is erected on the electromagnetic induction piece 40b and also covers the smoke containing groove 43b.

Referring to fig. 13, a third embodiment of the present invention is different from the first embodiment, in this embodiment, a smoke containing groove 43c for containing the aerosol 10 is concavely arranged on the electromagnetic induction component 40c, the smoke containing groove 43c is an annular shape corresponding to a smoke containing area of the smoking bowl 11, a vent hole 41 communicated with the inside of the smoking bowl 11 is arranged at the bottom of the smoke containing groove 43c, and after air enters the smoke containing groove 43c to assist the aerosol 10 to burn, the aerosol passes through the vent hole 41 to enter the smoking bowl 11, and enters the smoking bottle 12 of the hookah through a vent pipe 111 in the smoking bowl 11.

Wherein, the electromagnetic induction piece 40c is spaced from the ventilation pipe 111 in the smoking bowl 11. The smoke containing groove 43c also constitutes a heating portion 43c of the electromagnetic induction member 40 b.

Preferably, the heat insulation chassis 21 of the electromagnetic inductor 200 is erected on the electromagnetic induction piece 40c, and an air inlet hole (between the adjacent supporting legs 211) communicating with the outside is formed between the heat insulation chassis and the electromagnetic induction piece 40c, and the air inlet hole is communicated with the smoke containing groove 43c.

In order to prevent the smoke from overflowing, the heat insulating bottom plate 21 of the electromagnetic sensor 200 is erected on the electromagnetic sensor 40c, and also covers the heating portion 43c, and at the lowest covers the smoke containing groove 43c.

In the present embodiment, the heating member 40c may be a single member, and the peripheral portion and the central portion of the heating member 40c are made of the same material as the heating portion 43c. In another embodiment, the heating member 40c may be a fitting member, the central portion is made of a material different from that of the heating portion 43c, and the central portion opposite to the air pipe 111 is made of a non-magnetic and heat-resistant material, such as a ceramic material.

The above disclosure is only for the preferred embodiment of the present invention, and it should be understood that the present invention is not limited thereto, and the invention is not limited to the above disclosure.

Claims (14)

1. The utility model provides a water cigarette electromagnetic heating device of removable heating plate which characterized in that: including electromagnetic heater and electromagnetic induction spare, the electromagnetic heater movable frame is located on the electromagnetic induction spare or with the connection can be dismantled to the electromagnetic induction spare, the electromagnetic induction spare activity frame is located on the bowl mouth of tobacco bowl and is in the air vent that runs through is seted up to the position of tobacco bowl mouth top, electromagnetic heater can be right the electromagnetic induction spare sends high frequency alternating current signal so that the electromagnetic induction spare produces the eddy current effect and heats smog in the tobacco bowl produces the thing, just electromagnetic heater with the inlet port with external intercommunication has between the electromagnetic induction spare, the inlet port still communicates the air vent.

2. The hookah electromagnetic heating apparatus of claim 1, wherein: the electromagnetic induction piece is a tinplate stamping piece, a stainless steel piece or a stainless steel piece.

3. The hookah electromagnetic heating apparatus of claim 1, wherein: the edge of the electromagnetic induction piece supports the edge of the bowl opening and seals the edge of the bowl opening, the middle of the electromagnetic induction piece is sunken downwards to form a heating part extending into the tobacco bowl, and the vent hole is formed in the heating part.

4. The hookah electromagnetic heating apparatus of claim 3, wherein: the heating part is a circular groove, a polygonal groove or an annular groove.

5. The hookah electromagnetic heating apparatus of claim 1, wherein: the shell of the electromagnetic heater comprises a heat insulation chassis positioned at the bottom, a plurality of supporting legs are arranged on the periphery of the heat insulation chassis in an outward protruding mode, and the supporting legs support the periphery of the electromagnetic induction piece and form air inlets between adjacent supporting legs.

6. The hookah electromagnetic heating device of claim 5, wherein: the middle undercut of electromagnetic induction spare stretches into in order to form the heating portion of cigarette bowl, electromagnetic heater's casing is including the thermal-insulated chassis that is located the bottom, thermal-insulated chassis outwards protruding be equipped with one with the unsmooth complex outer boss of depressed part of heating portion, outer boss week is formed with a plurality of guide lugs along outwards protruding the establishing, the guide lug with the supporting legs is crisscross to be set up, the guide lug outside with the distance at thermal-insulated chassis center is greater than the supporting legs inboard with the distance at thermal-insulated chassis center to the terminal slope in the guide lug outside is in order to form the direction wall, thermal-insulated chassis activity erects in the week edge of electromagnetic induction spare with the unsmooth cooperation of heating portion of electromagnetic induction spare.

7. The hookah electromagnetic heating device of claim 1 or 6, wherein: electromagnetic heater's casing is including the thermal-insulated chassis that is located the bottom, thermal-insulated chassis with interval is in order to form the heating chamber between the heating portion of electromagnetic induction spare, form the external inlet port of intercommunication between the week edge of thermal-insulated chassis and electromagnetic induction spare, heating chamber one end intercommunication inlet port, one end intercommunication the air vent, during the smoking, outside air passes through the inlet port and gets into the heating chamber, is located quilt in the heating chamber follow behind the electromagnetic induction spare heating the air vent gets into in the cigarette bowl.

8. The hookah electromagnetic heating device of claim 1, wherein: the electromagnetic heater comprises a shell and an electromagnetic heating body arranged in the shell, wherein the shell comprises a heat insulation base plate, the electromagnetic heating body comprises an excitation coil and a driving circuit, the heat insulation base plate is opposite to a heating part of the electromagnetic induction piece and forms an air inlet hole between the electromagnetic induction piece, and the driving circuit controls the excitation coil to send out a high-frequency alternating current signal which can enable the electromagnetic induction piece to generate an eddy current effect outside the heat insulation base plate.

9. The hookah electromagnetic heating device of claim 8, wherein: the electromagnetic heating main body further comprises a control unit and a power supply unit, the power supply unit supplies power to the driving circuit, and the control unit controls the driving circuit to act; the casing includes top shell, drain pan, and install in keep apart the lid between top shell and the drain pan, the top shell with keep apart and form the installation between the lid the first cavity of control unit and power supply unit, keep apart the lid with form the installation between the drain pan the second cavity of excitation coil, keep apart lid isolation and electromagnetic shield first cavity and second cavity, thermal-insulated chassis forms the diapire of drain pan.

10. The hookah electromagnetic heating device of claim 9, wherein: the middle of the isolation cover is sunken towards the second cavity to form an isolation cavity, the isolation cavity is different from the first cavity, one side of the isolation cover back to the isolation cavity forms an inner boss protruding outwards, and the excitation coil is installed between the boss and the heat insulation base plate.

11. The hookah electromagnetic heating apparatus of claim 10, wherein: the excitation coil is arranged on the inner boss and has a distance with the heat insulation chassis.

12. The hookah electromagnetic heating apparatus of claim 9, wherein: the bottom shell comprises an annular fixing frame and a heat insulation base plate clamped on the annular fixing frame.

13. The hookah electromagnetic heating device of claim 9, wherein: a grip is formed outside the housing.

14. The hookah electromagnetic heating device of claim 1, wherein: the electromagnetic induction spare in position on the bowl mouth of cigarette bowl is formed with flourishing cigarette recess, flourishing cigarette recess is used for holding smoke generator, the air vent formed in flourishing cigarette recess bottom, the air by the inlet port gets into after flourishing cigarette recess assists the burning to produce smog, the smog of production passes in the air vent gets into the cigarette bowl to in the breather pipe entering hookah's the pipe in the cigarette bowl.

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