FIELD: power engineering.
SUBSTANCE: system of compressor crankcase heating comprises a compressor with a housing, where a compression mechanism is placed, driven by an electric motor, when the compressor is switched on, and not driven with an electric motor, when the compressor is switched off. The system also comprises a converter of a variable frequency drive, which provides for operation of the electric motor, when the compressor is switched on, by control of frequency of voltage supplied to the electric motor, and supplies electric current to the stator of the electric motor to heat the compressor, when the compressor is switched off. Also the method is provided to heat the compressor crankcase.
EFFECT: invention makes it possible to ensure more efficient controlled heating of a compressor crankcase.
20 cl, 8 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| COMBINED REFRIGERATING UNIT WITH SELF-ADJUSTING AUTOMATIC CONTROL SYSTEM FOR HEAT TREATMENT AND STORAGE OF COOLED FOOD PRODUCTS | 2012 |
|
RU2493506C1 |
| REFRIGERATING COMPRESSOR | 2013 |
|
RU2608665C2 |
| METHOD OF REGULATION AND OPERATION OF THE SHIP'S FREQUENCY-REGULATED SCROLL COMPRESSOR | 2018 |
|
RU2681199C1 |
| FUEL SUPPLY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE | 2020 |
|
RU2745692C1 |
| DEVICE AND METHOD FOR CONTROL OF REFRIGERATING PLANT GENERATOR DRIVE SPEED | 2008 |
|
RU2480685C2 |
| FUNCTIONAL DIAGNOSTICS METHOD FOR SEPARATOR | 2008 |
|
RU2465470C2 |
| METHOD OF DIAGNOSIS OF RECIPROCATING ENGINE | 1995 |
|
RU2090852C1 |
| TRANSPORT REFRIGERATING SYSTEM (VERSIONS) AND REFRIGERATOR FOR TRANSPORT REFRIGERATING SYSTEM (VERSIONS) | 2006 |
|
RU2399001C1 |
| METHOD FOR CONTROLLING THE DEVICE OF ACTIVE THERMAL PROTECTION OF BUILDINGS AND STRUCTURES | 2021 |
|
RU2782851C1 |
| SYSTEM FOR PRESSURE INCREASING AND AIR CONDITIONING | 2006 |
|
RU2398712C2 |
