Air conditioning apparatus and control method thereof
US6732539B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2002 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Nov 27, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/075
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air conditioning apparatus and control method thereof is provided, in which a pulse width modulation compressor and a two-stage variable-capacity compressor are connected in parallel with each other to control capacities of the two compressors according to indoor air conditioning loads. The air conditioning apparatus is cost-competitive because a capacity supplied by the pulse width modulation compressor is relatively low in cost, and the cost required for manufacturing the compressor is reduced in proportion to the reduced capacity. Accordingly, with the air-conditioning apparatus an effect is obtainable in which a variable-capacity compressor with small capacity and a two-stage variable-capacity compressor with large capacity are controlled as if a large-scale variable-capacity compressor with a same capacity as a total capacity of the two compressors were linearly controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.