Preheater for compressor
US10514025B2 · kind B2 · utility
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4References
3Claims
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Assignee
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Key dates
| Filing date | Dec 4, 2015 |
| Grant date | Dec 24, 2019 |
| Priority date | — |
| Expiry date | Apr 21, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2700/2105
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A preheater for a compressor that is capable of heating a lubricant oil efficiently with smaller power is provided. A preheater for a compressor includes: a capacitive oil surface sensor that is provided at a compressor used in a refrigerating cycle, and detects an oil surface of a lubricant oil A in the compressor; and a power supply unit that applies high-frequency voltage to the oil surface sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.