Automatic vending machine
US6460728B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2001 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Feb 4, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F9/105
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An automatic vending machine is provided in which the exhausted heat produced by cooling is utilized effectively and decrease in running costs is accomplished. The automatic vending machine includes primary heat unit 31 having compressor 52 and primary heat exchanger 53 and secondary heat unit 30B having secondary heat exchanger 43B. The primary heat exchanger 53 is connected with refrigerant-ejecting pipe 32 and refrigerant return pipe 33 attached to the compressor through valves 34A and 34B, respectively, so that changing over is allowed. High-pressure gas pipe 36 connected with the refrigerant-ejecting pipe, low-pressure gas pipe 37 connected with the refrigerant return pipe and liquid pipe 38 connected with the primary heat exchanger are provided. These secondary heat exchangers are connected to the high-pressure gas pipe and the low-pressure gas pipe through valves 39A and 39B selectively operated. The secondary heat units are provided in compartments of the automatic vending machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.