초록 ▼

The oil-cooled type compressor1A houses therein an inspecting flow passage19branched from a discharge flow passage12on the secondary side of an oil separation recovering portion14and joined with a suction flow passage11which is a lower pressure portion than the branched point, and an oil separating

The oil-cooled type compressor1A houses therein an inspecting flow passage19branched from a discharge flow passage12on the secondary side of an oil separation recovering portion14and joined with a suction flow passage11which is a lower pressure portion than the branched point, and an oil separating element22capable of capturing finer oil particles as compared with an oil separating element15within the oil separating recovering portion14, and houses therein an oil droplet detection means23for outputting a signal electrically showing a state change upon receipt of oil droplets dropped from the oil separating element22, being provided with an oil separation detector21interposed in the inspecting flow passage19, and a calculating portion24for receiving an electric signal from the oil droplet detection means23to calculate the percentage content of oil of the compressed gas from the interval of the electric signal to output it.

대표청구항 ▼

The oil-cooled type compressor1A houses therein an inspecting flow passage19branched from a discharge flow passage12on the secondary side of an oil separation recovering portion14and joined with a suction flow passage11which is a lower pressure portion than the branched point, and an oil separating

The oil-cooled type compressor1A houses therein an inspecting flow passage19branched from a discharge flow passage12on the secondary side of an oil separation recovering portion14and joined with a suction flow passage11which is a lower pressure portion than the branched point, and an oil separating element22capable of capturing finer oil particles as compared with an oil separating element15within the oil separating recovering portion14, and houses therein an oil droplet detection means23for outputting a signal electrically showing a state change upon receipt of oil droplets dropped from the oil separating element22, being provided with an oil separation detector21interposed in the inspecting flow passage19, and a calculating portion24for receiving an electric signal from the oil droplet detection means23to calculate the percentage content of oil of the compressed gas from the interval of the electric signal to output it. ductor; anda heater for heating said heat conductor, said heater being controlled so that in the state that the oil separated by said second separation means is not dropped, the temperature of said heat conductor is maintained approximately constant.9. The oil-cooled type compressor according to claim 8, wherein said heat conductor has its lower part to have an elongated shape so as to lead oil downward from the heater or the portion connected with the temperature detector.10. The oil-cooled type compressor according to claim 8, wherein an oil-proof agent is coated on the heat conductor.11. The oil-cooled type compressor according to claim 1, wherein said oil detection means comprises a load cell, said load cell detecting the shock force when the oil dropped from said second oil separation means impinges upon said oil detection means.12. The oil-cooled type compressor according to claim 1, wherein said oil detection means comprises:a thin plate supported in a cantilever fashion, said thin plate being installed so that oil separated by said second oil separation means drops on the free end thereof, and a strain gage, said strain gage detecting vibrations of said thin plate.13. The oil-cooled type compressor according to claim 1, wherein said calculating portion obtains the oil content from the interval in which the electric signal changes.14. The oil-cooled type compressor according to claim 8, wherein said calculating portion obtains the oil content from the temperature dropping amount per unit time.15. The oil-cooled type compressor according to claim 1, further comprising a siphon, said siphon storing oil dropped from said second oil separation means and flows out the stored oil so as to come in contact with said oil detection means.16. The oil-cooled type compressor according to claim 1, further comprising:an oil absorbing member, said oil absorbing member being provided downward of said second oil separation means to absorb oil separated by said second oil separation means, andan electric resistance detection means for detecting the electric resistance of said oil absorbing member.17. The oil-cooled type compressor according to claim 1, further comprising a flow rate detection means provided on said inspecting flow passage, said flow rate detection means detecting the flow rate of said compressed gas flowing through said inspecting flow passage, and said calculating portion calculates the percentage content of oil of said compressed gas using the flow rate detected by said flow rate detection means.18. The oil-cooled type compressor according to claim 17, further comprising a flow rate control means provided on said inspecting flow passage, said flow rate control means controlling the flow rate of the compressed gas flowing through said inspecting flow passage in response to an electric signal from said oil detection means.