Multi-air conditioner for heating and cooling including a shut-off valve between indoor and outdoor units and control method thereof
US11892209B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2021 |
| Grant date | Feb 6, 2024 |
| Priority date | — |
| Expiry date | Nov 4, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2600/2519
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A multi-air conditioner for heating and cooling may include at least one indoor unit, an outdoor unit, and at least one leak shut-off valve. The at least one indoor unit is installed in an indoor space and includes an indoor heat exchanger and an indoor expansion valve. The outdoor unit is connected to the at least one indoor unit via a refrigerant pipeline and includes an outdoor heat exchanger, a compressor, an outdoor expansion valve, and a four-way valve. The outdoor unit may decrease a pressure of the refrigerant pipeline when a refrigerant leak occurs from the refrigerant pipeline. The at least one leak shut-off valve is provided on the refrigerant pipeline and blocks a flow of refrigerant in the refrigerant pipeline when a refrigerant leak from the refrigerant pipeline occurs in the indoor space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.