Dometic Sweden Ab

Arne Karlsson

Carl H Lindhagen

Fredrik Reithe

Anton Lundqvist

Ingemar Hallin

The invention relates to a method for controlling a running time of an absorption refrigerating system of an absorption refrigerator, which absorption refrigerator comprises two differently tempered refrigerator compartments. The method comprises the steps of: monitoring the temperature in a first compartment; activating the refrigerating system when the temperature sensed in the first compartment exceeds a predetermined value; de-activating the refrigerating system when a cut-out temperature is reached; monitoring the time period during which the absorption refrigerating system is turned off; and supplying heat to the first refrigerator compartment, when the time period exceeds a predetermined time period. The invention also relates to a microcontroller, computer program product and to an absorption refrigerator comprising means for performing the inventive method.

Method for use in controlling an absorption refrigerating system, and an absorption refrigerator

The present invention relates to an apparatus and method for defrosting an absorption refrigerator comprising the steps of determining a defrost start time for defrosting of the low temperature compartment and higher temperature compartment, starting the absorption refrigerating system at the defrost start time independent of other control parameters determining start and stop of the absorption refrigerating system, detecting stop of the absorption refrigerating system, applying heat to the first tube section using the first heater, detecting end of low temperature compartment defrosting, starting the absorption refrigerating system after end of low temperature compartment defrosting, and applying heat to the second tube section using the second heater.

Defrosting

The present invention relates to an absorption refrigerator including a cabinet having outer walls and at least one door encasing a low temperature storage compartment and a higher temperature storage compartment, said compartments being separated by a partition wall, an absorption refrigerating system including an evaporator tube in which a refrigeration medium flows from an upstream end to a downstream end of the evaporator tube, and which evaporator tube comprises a first tube section which is arranged to absorb heat from the low temperature compartment, and at least a second tube section, which is arranged to absorb heat from the higher temperature compartment, a battery arranged to supply power to electronic equipment in said absorption refrigerating system, a control system arranged to control start and stop of said absorption refrigerating system to control the temperature in at least said higher temperature storage compartment to be within a specified temperature range, and a heater arranged in said higher temperature storage compartment provided to apply heat to said higher temperature compartment. The refrigerator is characterized in that said control system comprises a sensor arranged to detect if said battery is currently charged or if AC-power is available, and that said control system is arranged to set freezer control values to a first set of freezer control values if said battery is charged or if AC-power is available and to a second set of freezer control values if said battery is not charged or if AC-power is not available, where at least one of the values in said second set of freezer control values is higher than both values in said first set of freezer control values.

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Motala, Sweden

Arne Karlsson