Ware washing machine with heat pump and modulating valve
US11369247B2 · kind B2 · utility
0Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2020 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Jul 29, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L2501/10
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A conveyor type ware washing machine uses a heat pump to reduce exhaust heat and to heat incoming water. A modulating valve is used to control incoming water flow through a heat exchanger of the heat pump. Processing circuitry automatically dynamically adjusts the modulating valve between a plurality of open states based on the sensed refrigerant head pressure of the heat pump, so that the refrigerant head pressure is maintained in a predefined range. The ware washing machine is efficient, and reduces the amount of heat exhausted to ambient. Related methods are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.