Energy administration device
AssigneeDometic Corporation
InventorsVolker Müller, Jörg Peter
Life of this patent
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Abstract
An energy administration device serves for operating an absorption refrigerating device with different energy sources and includes an energy control unit (7) for controlling and selecting an energy source. It includes at least one gas operation unit (8 to 12) for operating said absorption refrigerating device with gas with a gas burner connected to a gas supply line, which can be controlled by a surveillance system. Said surveillance system is an ignition surveillance system and includes an ionisation sensor and/or UV sensor for surveying said gas flame of said gas burner (11).
Claims14
An energy administration device for operating an absorption refrigerating device with different energy sources including
- an energy control unit (7) for controlling and selecting an energy source and at least one gas operation unit (8, 9, 10, 11, 12) for operating said absorption refrigerating device with gas with a gas burner (11) connected to a gas supply line and controllable by a surveillance system,
- wherein said surveillance system is an ignition surveillance system and comprises an ionisation sensor and/or UV sensor for surveying the gas flame of said gas burner (11).
The device in one of the preceding claims,
- wherein said gas supply line comprises a valve (12) electrically selectable by pulse width modulation and which interrupts the gas supply when said absorption refrigerating unit is not operated using gas or when said energy control unit (7) does not detect cooling demand or an accident.
The device as defined in
- wherein an undervoltage detection unit (6a) is provided for which is coupled to said energy control unit (7) and said AC operation unit (1) in such a manner that said energy control system (7) selects said AC operation when said undervoltage detection unit (6a) detects a voltage higher than a given threshold value, preferably 200 V, and said energy control unit (7) switches to gas operation or DC operation when said undervoltage detection unit (6a) detects a voltage less than the given threshold value.
The device as defined in
- wherein said energy control unit (7) is coupled to a board net current detection device (6b) in such manner that said energy control system selects DC operation when DC is detected, and selects another energy operation when no or very low DC, respectively, is detected.
The device as defined in
- wherein a temperature sensor (15) is provided for arrangement of said absorption refrigerating unit, said temperature sensor being connected to said energy control device and said different kinds of energy operation being controllable by means of the temperature detected by said sensor.
Dependencies are inferred from the claim text.