# US 11,998,646 B2 · Heating device and method for heating and sterilizing cans

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- Number: US 11,998,646 B2
- Document ID: US11998646B2
- Status: Granted
- Kind: B2
- Application number: 18/515,674
- Filed: 2023-11-21
- Published: 2024-04-04
- Granted: 2024-06-04
- Earliest claimed: 2022-09-30
- Applicants: Linxiao Fan
- Inventors: Linxiao Fan
- Web page: https://patentgrep.com/patent/US11998646B2

## CPC

- A61L 2/04: Heat (radiation A61L2/08)
- A61L 2/26: Accessories
- A61L 2103/23: {Containers other than laboratory or medical, e.g. bottles or mail}
- A61L 2202/122: Chambers for sterilisation
- A61L 2202/123: Connecting means
- A61L 2202/17: Combination with washing or cleaning means
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)

## Abstract

A method for heating and sterilizing cans, including the following steps: Step 1: placing one or more cans in the cage body successively along an axis direction, and clamping the one or more cans in the cage body; Step 2: adding hot oil in the storage tank, and maintaining an oil temperature; Step 3: placing the cage body in the storage tank, and driving the cage body to roll in the storage tank by the drive assembly until the cage body enters the transition box; Step 4: conveying the cage body in the transition box, and introducing hot air or cold air into the transition box, until the cage body leaves the transition box through the discharge port; and Step 5: taking out the one or more cans from the cage body, and cleaning the one or more cans.

## Claims

### Claim 1

A method for heating and sterilizing cans using a heating device for heating a can fixing cage, comprising the following steps:
Step 1: placing one or more cans in a cage body successively along an axis direction, and clamping the one or more cans in the cage body by a cage cover;
Step 2: adding hot oil in a storage tank, and maintaining an oil temperature by using a heater;
Step 3: placing the cage body in the storage tank, and driving the cage body to roll in the storage tank by a drive assembly until the cage body enters a transition box;
Step 4: conveying the cage body in the transition box, and introducing hot air or cold air into the transition box through a ventilation pipe to maintain the one or more cans inside the cage body at a specified temperature, until the cage body leaves the transition box through a discharge port; and
Step 5: taking out the one or more cans from the cage body, and cleaning the one or more cans; wherein the heating device for heating the can fixing cage comprises a heating box with an opening on an upper end face, wherein the storage tank is provided inside the heating box, the can fixing cage is arranged in the storage tank, the drive assembly configured for driving a movement of the can fixing cage is provided in the storage tank, the heater is provided below the storage tank, the can fixing cage comprises the cage body configured for holding the one or more cans, the cage body has an opening at one end, the can fixing cage further comprises the cage cover configured for sealing the opening of the cage body, the cage cover and the cage body are detachably connected, both ends of the one or more cans abut against pad blocks, the one or more cans are fixed by the pad blocks in the cage body, the drive assembly comprises a transmission chain, a first side of the transmission chain is located above the storage tank, a second side of the transmission chain is located below the storage tank, transmission sprockets configured for meshing with an inner side of the transmission chain are provided outside two ends of the storage tank, the heating box is provided with a drive motor configured for driving the transmission sprockets to rotate, a plurality of pushing components distributed evenly are provided on the transmission chain, the can fixing cage is located between two adjacent pushing components of the plurality of pushing components, a first oil guide groove parallel to the transmission chain is formed in an inner bottom wall of the storage tank, second oil guide grooves are further formed in the inner bottom wall of the storage tank at both sides of the first oil guide groove, the first oil guide groove and the second oil guide grooves are configured to be parallel with each other, the first oil guide groove has a gradually decreasing groove depth from a first end to a second end of the first oil guide groove, and each of the second oil guide grooves has a gradually increasing groove depth from a first end to a second end of a corresponding second oil guide groove of the second oil guide grooves.