# US 11,304,452 B2 · Direct heating vaporizer

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- Number: US 11,304,452 B2
- Document ID: US11304452B2
- Status: Granted
- Kind: B2
- Application number: 16/843,818
- Filed: 2020-04-08
- Published: 2021-10-14
- Granted: 2022-04-19
- Earliest claimed: 2020-04-08
- Assignees: Shenzhen TopGreen Technology Co. Ltd.
- Applicants: Shenzhen TopGreen Technology Co. Ltd.
- Inventors: Guobin Jia
- Web page: https://patentgrep.com/patent/US11304452B2

## CPC

- A24F 40/46: Shape or structure of electric heating means
- A24F 40/20: Devices using solid inhalable precursors
- A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06)

## Abstract

The direct heating vaporizer of present invention primarily consists of a tube, a heating chamber and a material chamber located inside the tube. A filter unit connects the heating chamber and the material chamber; the filter can be replaced. A heating net inside the heating chamber produces heat to heat up the tobacco or other vaping medium directly when activated and controlled by a temperature sensing and control unit. Such direct heating mechanism results in shorter heating time and evenly heating applied to the vaping medium by the mechanism of air being heated up then sent to the material chamber to closely surround and heat up the vaping medium for a user's enjoyment.

## Claims

### Claim 1

A direct heating vaporizer, comprising:
a tube with a base;
a heating chamber inside the tube adjacent to the base, forming a gap layer between inside wall of the tube and outside wall of the heating chamber;
a material chamber connected to the heating chamber by a filter unit;
a heating net located inside the heating chamber; and
a temperature sensing and control unit extending out from the base with a sensing probe located inside the space defined by the heating net,
wherein the temperature sensing and control unit detects the temperature coming in to the heating chamber via the gap layer and controls the heat generated by the heating net to heat the air going to the material chamber.

### Claim 2 (depends on 1)

The direct heating vaporizer of claim 1 wherein the material chamber can hold tobacco, wax or other vaporizing medium in the chamber.

### Claim 3 (depends on 1)

The direct heating vaporizer of claim 1 wherein the filter unit is removable and replaceable.