Abstract: A controller unit for controlling the speed of a motor for driving an oil injected compressor, the controller unit including: a data connection; and a first module to receive data through the data connection. The controller unit includes a processing unit for determining a minimum working speed of the motor on the basis of the measured working pressure, the ambient temperature and a dew point temperature; and a comparator unit to compare the determined minimum working speed with the retrieved working speed of the motor. The processing unit includes a signal generating unit to send a signal to the motor for increasing the working speed of the motor to at least the determined minimum working speed, if the retrieved working speed is lower than the determined minimum working speed.

Abstract: An inlet valve that includes a pipe and a housing that forms a chamber around this pipe, in which an aperture is affixed with blades that are slidingly provided in the housing. Whereby these blades present a protruding section with edges that lie against one another and whereby the blades are provided with a spindle and there are means to enable the blades to pivot around these spindles, during the movement of the spindles, between a closed position, whereby the sections are oriented radially to close off the passage in the pipe, and an open position whereby the sections are turned away from the pipe.

Abstract: A controller unit for controlling the speed of a motor for driving an oil injected compressor, the controller unit including: a data connection; and a first module to receive data through the data connection. The controller unit includes a processing unit for determining a minimum working speed of the motor on the basis of the measured working pressure, the ambient temperature and a dew point temperature; and a comparator unit to compare the determined minimum working speed with the retrieved working speed of the motor. The processing unit includes a signal generating unit to send a signal to the motor for increasing the working speed of the motor to at least the determined minimum working speed, if the retrieved working speed is lower than the determined minimum working speed.

Abstract: A method for controlling a compressor device (1) with a compressor element (2) and oil circuit (14) with oil (15) that is injected into the compressor element (2) by a fan (19) via a cooler (18), with a bypass pipe (20) across the cooler (18), whereby when the temperature (T) of the compressor element (2) is less than a value (Tset), the method including the following steps: switching the fan (19) off; when the temperature (T) is still less than Tset, driving the oil (15) via the bypass pipe (20); when the temperature (T) is still less than Tset, decreasing the quantity of oil (15) that is injected into the compressor element (2) until the temperature (T) is equal to Tset.

Abstract: A method for controlling a compressor device (1) with a compressor element (2) and oil circuit (14) with oil (15) that is injected into the compressor element (2) by a fan (19) via a cooler (18), with a bypass pipe (20) across the cooler (18), whereby when the temperature (T) of the compressor element (2) is less than a value (Tset), the method including the following steps: switching the fan (19) off; when the temperature (T) is still less than Tset, driving the oil (15) via the bypass pipe (20); when the temperature (T) is still less than Tset, decreasing the quantity of oil (15) that is injected into the compressor element (2) until the temperature (T) is equal to Tset

Abstract: An inlet valve that includes a pipe and a housing that forms a chamber around this pipe, in which an aperture is affixed with blades that are slidingly provided in the housing. Whereby these blades present a protruding section with edges that lie against one another and whereby the blades are provided with a spindle and there are means to enable the blades to pivot around these spindles, during the movement of the spindles, between a closed position, whereby the sections are oriented radially to close off the passage in the pipe, and an open position whereby the sections are turned away from the pipe.

Abstract: A liquid separator is provided with a vessel which defines a space which is sealed at the top by a lid in which is situated an outlet. A pipe is provided in the space extending round the outlet in the space, as of the lid. A fine filter also extends in the space round the outlet such that between the pipe and the fine filter is defined an outlet zone which is connected to the environment by means of a safety valve. The safety valve is connected to the outlet zone via a passage in the lid.

Abstract: Liquid separator provided with a vessel (2) Which defines a space which is sealed at the top by means of a lid (7) in which is situated an outlet (8), whereby a pipe (11) is provided in the above-mentioned space on the one hand, extending round the above-mentioned outlet (8) in the above-mentioned space, as of the above-mentioned lid (7), and a fine filter (5) on the other hand, which also extends in the space round the above-mentioned outlet (8) and as of the above-mentioned lid (7), such that between the pipe (11) and the fine filter (5) is defined an outlet zone which is connected to the environment by means of a safety valve (21), characterised in that the safety valve (21) is connected to the above-mentioned outlet zone via a passage (19) in the lid (7).