# US 2021/0274836 A1 · Hookah

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- Number: US 2021/0274836 A1
- Document ID: US20210274836A1
- Status: Published application
- Kind: A1
- Application number: 17/096,943
- Filed: 2020-11-12
- Published: 2021-09-09
- Earliest claimed: 2020-03-09
- Assignees: Shenzhen Eigate Technology Co., Ltd.
- Applicants: Shenzhen Eigate Technology Co., Ltd.
- Inventors: Tuanfang LIU
- Web page: https://patentgrep.com/patent/US20210274836A1

## CPC

- A24F 1/30: Hookahs
- A24F 1/32: Selection of materials for pipes
- A24F 40/20: Devices using solid inhalable precursors
- A24F 40/465: specially adapted for induction heating
- A24F 40/51: Arrangement of sensors
- H05B 6/06: Control, e.g. of temperature, of power
- H05B 6/105: {using a susceptor}
- H05B 6/108: {for heating a fluid}
- H05B 6/36: Coil arrangements
- A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06)
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

## Abstract

A hookah includes a high-frequency heating assembly and a battery assembly connected to the high-frequency heating assembly. The high-frequency heating assembly includes a cup, a metal sheet, and a magnetic induction coil. The cup includes high-temperature resistant non-metallic material and is configured to accommodate a tobacco material. The metal sheet is fixed in the cup and the cup is disposed in the magnetic induction coil. When the magnetic induction coil is electrified, an eddy current is generated in the metal sheet whereby the metal sheet produces heat to heat the tobacco material.

## Claims

### Claim 1

A hookah, comprising a high-frequency heating assembly and a battery assembly connected to the high-frequency heating assembly;
wherein:
the high-frequency heating assembly comprises a cup, a metal sheet, and a magnetic induction coil;
the cup comprises high-temperature resistant non-metallic material and is configured to accommodate a tobacco material;
the metal sheet is fixed in the cup and the cup is disposed in the magnetic induction coil; and
when the magnetic induction coil is electrified, an eddy current is generated in the metal sheet whereby the metal sheet produces heat to heat the tobacco material.

### Claim 2 (depends on 1)

The hookah of claim 1, wherein the cup comprises an upper cover and the upper cover comprises a plurality of through holes.

### Claim 3 (depends on 2)

The hookah of claim 2, wherein the metal sheet is in the form of mesh, cross shape, fan shape, or spiral shape.

### Claim 4 (depends on 3)

The hookah of claim 3, wherein the high-frequency heating assembly further comprises a temperature sensor configured to sense a temperature change of the hookah.

### Claim 5 (depends on 4)

The hookah of claim 4, wherein the high-frequency heating assembly further comprises a thermal insulation cylinder disposed between the cup and the magnetic induction coil to protect the magnetic induction coil.

### Claim 6 (depends on 5)

The hookah of claim 5, wherein the thermal insulation cylinder and the cup each comprise high-temperature resistant glass.

### Claim 7 (depends on 1)

The hookah of claim 1, wherein the battery assembly comprises a plurality of batteries connected in series or in parallel.

### Claim 8 (depends on 1)

The hookah of claim 1, wherein the high-frequency heating assembly further comprises a base and a control panel; the magnetic induction coil is fixed on the base and a lead thereof runs through the base; an output end of the control panel is soldered on the lead of the magnetic induction coil to supply power to the magnetic induction coil.

### Claim 9 (depends on 7)

The hookah of claim 7, wherein the high-frequency heating assembly further comprises a first insulation ring, a positive electrode, and a negative electrode; the temperature sensor is disposed on the base and below the magnetic induction coil; the first insulation ring is disposed on the base to separate positive and negative leads of the temperature sensor; the positive electrode is disposed in the first insulation ring and is connected to the positive lead of the temperature sensor and an input positive electrode of the control panel; the negative electrode is disposed outside the first insulation ring and is connected to the negative lead of the temperature sensor and an input negative electrode of the control panel; the control panel is disposed on a screw thread of the negative electrode and fixed on the base to receive temperature information of the temperature sensor.

### Claim 10 (depends on 1)

The hookah of claim 1, further comprising a smoke filter, a first air passage, and a second air passage; wherein the smoke filter is filled with appropriate water; the first air passage comprises a first end connected to the high-frequency heating assembly and a second end submerged in the water; the second air passage comprises a first end connected to a mouthpiece and a second end disposed above the liquid level of the water; when in use, the smoke produced by the high-frequency heating assembly enters the water via the first air passage, is filtered by the water, comes out of the water, enters the second air passage, and is inhaled by a user.