Patent ID: 7658081

Claim:
A refrigerant flow rate detecting structure in a compressor, wherein the compressor includes: a refrigerant passage through which the refrigerant passes, wherein the passage is comparted into an upstream passage having a high pressure and a downstream passage having a low pressure; a differential pressure type flow rate detector that obtains the pressure in the upstream passage and the pressure in the downstream passage to detect a refrigerant flow rate within the refrigerant passage, wherein the detector is provided with an accommodation chamber, a partition body slidably accommodated within the accommodation chamber, a first pressure chamber, and a second pressure chamber, the first and second pressure chambers being separated from each other by the partition body, wherein the pressure in the upstream passage is transmitted to the first pressure chamber, and the pressure in the downstream passage is transmitted to the second pressure chamber; a discharge pressure zone into which the compressed refrigerant gas is discharged; an oil separator having an oil separating chamber separating the oil from the refrigerant within the upstream passage, wherein the oil separator comparts the refrigerant passage into the upstream passage and the downstream passage; an oil introduction passage connected to the oil separating chamber, the oil introduction passage introducing the oil separated from the refrigerant by the oil separator to a pressure zone other than the discharge pressure zone; and a high pressure introduction passage introducing the pressure in the upstream passage to the first pressure chamber via the oil introduction passage.