Unit arrangement
First Claim
1. A unit arrangement having a receiving housing or a switchgear cabinet (30), in an interior of which electrical units (31) are accommodated and having a cooling unit (10) in air-conducting communication with the interior via at least one air inlet (14) and at least one blower aperture (13), and a cooling operation monitoring device, the unit arrangement comprising:
- the cooling operation monitoring device having an inlet temperature sensor (40) measuring a temperature of air to be cooled which is supplied to the cooling unit (10) via the at least one air inlet (14), an outlet temperature sensor measuring a second temperature of cooled air supplied to the interior via the at least one blower aperture (13), and a computing unit of the cooling operation monitoring device determining a temperature difference measured between the inlet temperature sensor and the outlet temperature sensor, a cooling medium supplied via a pilot line (44) to a cooling module (20) and discharged from the cooling module (20) via a return line (46), and a flow of the cooling medium controlled by a solenoid valve (45) as a function of an outlet temperature signal determined by the outlet temperature sensor (41).
1 Assignment
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Accused Products
Abstract
A unit arrangement having a receiving housing, in particular a switchgear cabinet, in an interior of which electrical units are accommodated and having a cooling device which is in air-conducting communication with the interior of the receiving housing via at least one air inlet and at least one blower aperture, and a cooling operation monitoring device. A requirement-orientated control of the cooling operation is possible when the cooling operation monitoring device has an inlet temperature sensor which measures a temperature of the air to be cooled which is supplied to the cooling unit via the air inlet. An outlet temperature sensor measures a temperature of the cooled air which is supplied to the interior of the receiving housing via the blower aperture. A computing unit of the cooling operation monitoring device determines a temperature difference between the temperature measured by the inlet temperature sensor and the outlet temperature sensor.
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Citations
9 Claims
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1. A unit arrangement having a receiving housing or a switchgear cabinet (30), in an interior of which electrical units (31) are accommodated and having a cooling unit (10) in air-conducting communication with the interior via at least one air inlet (14) and at least one blower aperture (13), and a cooling operation monitoring device, the unit arrangement comprising:
the cooling operation monitoring device having an inlet temperature sensor (40) measuring a temperature of air to be cooled which is supplied to the cooling unit (10) via the at least one air inlet (14), an outlet temperature sensor measuring a second temperature of cooled air supplied to the interior via the at least one blower aperture (13), and a computing unit of the cooling operation monitoring device determining a temperature difference measured between the inlet temperature sensor and the outlet temperature sensor, a cooling medium supplied via a pilot line (44) to a cooling module (20) and discharged from the cooling module (20) via a return line (46), and a flow of the cooling medium controlled by a solenoid valve (45) as a function of an outlet temperature signal determined by the outlet temperature sensor (41). - View Dependent Claims (2, 3, 4, 5)
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6. A unit arrangement having a receiving housing or a switchgear cabinet (30), in an interior of which electrical units (31) are accommodated and having a cooling unit (10) in air-conducting communication with the interior via at least one air inlet (14) and at least one blower aperture (13), and a cooling operation monitoring device, the unit arrangement comprising:
the cooling operation monitoring device having an inlet temperature sensor (40) measuring a temperature of air to be cooled which is supplied to the cooling unit (10) via the at least one air inlet (14), an outlet temperature sensor measuring a second temperature of cooled air supplied to the interior via the at least one blower aperture (13), and a computing unit of the cooling operation monitoring device determining a temperature difference measured between the inlet temperature sensor and the outlet temperature sensor, a cooling medium supplied via a pilot line (44) to a cooling module (20) and discharged from the cooling module (20) via a return line (46), a pilot temperature sensor (42 and 47) associated with the pilot line (44) and with the return line (46) respectively, a computing unit forming a difference signal which corresponds to the temperature difference, a volume flow meter (43) associated with one of the cooling module (20), the pilot line (44) and the return line (46), and the computing unit determining a quantity of heat (Q) from the difference signal and the signal of the volume flow meter and transmitting a heat signal corresponding to the quantity of heat (Q) to a display unit. - View Dependent Claims (7)
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8. A unit arrangement having a receiving housing or a switchgear cabinet (30), in an interior of which electrical units (31) are accommodated and having a cooling unit (10) in air-conducting communication with the interior via at least one air inlet (14) and at least one blower aperture (13), and a cooling operation monitoring device, the unit arrangement comprising:
the cooling operation monitoring device having an inlet temperature sensor (40) disposed in an air flow through the at least one air inlet (14) and measuring a temperature of air to be cooled which is supplied to the cooling unit (10) via the at least one air inlet (14), an outlet temperature sensor disposed in an air flow through the at least one blower aperture (13) and measuring a second temperature of cooled air supplied to the interior via the at least one blower aperture (13), and a computing unit of the cooling operation monitoring device determining a temperature difference measured between the inlet temperature sensor and the outlet temperature sensor.
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9. A unit arrangement having a receiving housing or a switchgear cabinet, in an interior of which electrical units are accommodated, the unit arrangement comprising:
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a cooling unit in air-conducting communication with the interior via an air inlet and a blower aperture; a cooling operation monitoring device in communication with the cooling unit; an inlet temperature sensor disposed in an air flow through the air inlet and measuring a temperature of air in the air flow to be cooled; an outlet temperature sensor disposed in a cooled air flow through the blower aperture and measuring a second temperature of cooled air in the cooled air flow; and a computing unit of the cooling operation monitoring device determining a temperature difference measured between the inlet temperature sensor and the outlet temperature sensor.
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Specification