摘要:
The before mentioned invention refers to an ice detection unit (1), at least comprising a light source (6) for emitting visible light (60), an optical means (62) for dividing said visible light (60) in multiple light beams (7.1-7.7), multiple detection means (8.1-8.7) for detecting light of said light beams (7.1-7.7) and for outputting of signals representing detected light, wherein refraction property changes of said optical means (62) are causing light path changes of the light paths of said multiple light beams (7.1-7.7), wherein refraction property changes are caused in dependency of the amount of ice on a surface of said optical means (62), wherein said signal output at least differs between a situation without ice on said surface of said optical means (62) and a situation with ice on said surface of said optical means (62).
摘要:
A sensing module according to an embodiment includes: a substrate; a sensing electrode formed on a first surface of the substrate; a reaction layer formed on the first surface of the substrate and burying an upper surface of the substrate and the sensing electrode; a driving unit electrically connected to the sensing electrode formed on the first surface of the substrate and processing a sensing signal transmitted through the sensing electrode; and a protective layer formed surrounding the driving unit, wherein an impedance value of the reaction layer is changed by an external contact material, and the sensing electrode transmits the sensing signal with respect to the impedance value of the reaction layer to the driving unit.
摘要:
Un procédé de gestion du fonctionnement d'un camion de transport frigorifique de produits thermosensibles, du type à injection indirecte, où le camion est muni : - d'au moins une chambre de stockage des produits, - d'une réserve d'un fluide cryogénique tel l'azote liquide, - d'un système d'échangeur thermique (1) dans lequel circule le fluide cryogénique, système d'échangeur comprenant au moins un échangeur thermique interne à ladite au moins une chambre , - ainsi que d'un système de circulation d'air (2), par exemple de type ventilateurs, apte à mettre en contact l'air interne à la chambre avec les parois froides du ou des échangeurs interne(s) à ladite au moins une chambre ; se caractérisant en ce que l'on déclenche une opération de dégivrage dudit échangeur lorsque deux écarts de température caractérisant l'échangeur (son pincement et un indicateur de suivi de la température de l'air soufflé) sont supérieurs à une consigne donnée pendant un temps cumulé t1.
摘要:
A system for detecting frost on a surface (18) comprises a resistive element (12) in contact with the surface (18), a current generator (22) connected to the resistive element (12), a sensor (28) measuring the temperature of the resistive element (12), and a calculation unit (38) capable of determining the presence of ice on the surface (18) depending on the measurement delivered by the sensor. The generator (22) injects an electrical current into the element (12) in order to bring same to a temperature higher than the melting temperature of the ice. The calculation unit (38) determines a difference between the temperature measured during the heating of the element and an exponential growth function, and detects frost on the surface (18) if the difference is greater than a predefined detection threshold.
摘要:
An exterior heat exchanger 33 is provided with paths P1-P4. The flow rate of the air being blown by an exterior blower to pass through the path P1 closer to a refrigerant inlet of the exterior heat exchanger 33 is set to be higher than that of the air being blown by the exterior blower to pass through the path P4 closer to a refrigerant outlet of the exterior heat exchanger 33.
摘要:
Provided is a refrigerator, which includes a main body, a door, an evaporator, a defrosting heater, a defrosting sensor, and a control part. The main body includes a food storage space and an evaporation compartment. The door selectively closes the food storage space. The evaporator is disposed in the evaporation compartment. The defrosting heater is disposed at a side of the evaporator to remove frost from an outer surface of the evaporation compartment or the evaporator. The defrosting sensor is disposed at a side of the evaporation compartment or the evaporator to sense a frost formation amount. The control part receives a sensed value transmitted from the defrosting sensor, and controls an operation of the defrosting heater according to the sensed value. A sensing period of the defrosting sensor is varied according to a frost formation amount sensed by the defrosting sensor.
摘要:
A system for controlling the defrost cycle of an evaporator comprising a sensor in the coil of an evaporator or downstream of the coil, the sensor configured to determine changes in the liquid mass ratio of the refrigerant in the evaporator. The difference in liquid mass ratio relating to frost buildup on the outside of said evaporator. When the difference in liquid mass ratio reaches a predetermined amount, corresponding to an unsatisfactory frost buildup, a defrost cycle is initiated. When the liquid mass ratio returns to a value that corresponds to a defrosted evaporator, the defrost cycle is discontinued.
摘要:
A cooling device capable of operating either as a deep-freezer or as a fresh food refrigerator is disclosed. The device comprises an evaporator which is placed behind the rear wall of the storage compartment of the cooling device. The cooling device further comprises a combined heater having a defrost heater placed in thermal communication with said evaporator, and a rear wall heater placed in between said evaporator and the rear wall of the storage compartment of the cooling device.
摘要:
A cooler for a beverage dispense system includes a reservoir (4) of coolant 6 for forming an ice bank (7) on an evaporator 8 of a refrigeration system. The size of the ice bank (7) is controlled by a controller (14) responsive to an array of sensors (16a, 16b, 16c, 16d, 16e) for switching the refrigeration system on and off. The sensors 16a, 16b, 16c, 16d, 16e) are arranged at different distances from the evaporator and the controller (14) can respond to different combinations of the sensors to vary the size of the ice bank (7).