Refrigeration – With indicator or tester – Operatively correlated with automatic control
Reexamination Certificate
2008-06-17
2008-06-17
Jones, Melvin (Department: 3744)
Refrigeration
With indicator or tester
Operatively correlated with automatic control
C062S129000
Reexamination Certificate
active
07386986
ABSTRACT:
An apparatus for generating heat and a control method thereof are provided which are capable of reducing the cost and simplifying coupling by using a cheap diode for lowering an applied voltage of a lamp instead of using an expensive capacitor used for the apparatus for generating heat for low temperature compensation. The apparatus includes a door opening/closing sensor for sensing whether a refrigerator door is opened or closed; a temperature sensor for sensing a temperature of outside air; a control unit for outputting a control signal for driving a lamp upon receiving a signal of the door opening/closing sensor and outputting a control signal for low temperature compensation upon receiving a signal of the temperature sensor; a switch controlled to be turned on by the control signal for driving the lamp; a relay controlled to be turned on by the control signal for low temperature compensation; a lamp connected in series with the switch and the relay and performing lighting and heat generation operations; and a diode connected in series with the relay and half-wave rectifying the power applied to the lamp.
REFERENCES:
patent: 2724576 (1955-11-01), Jacobs
patent: 2724577 (1955-11-01), Murphy
patent: 2780441 (1957-02-01), Rhodes
patent: 6216480 (2001-04-01), Camus et al.
patent: 6355885 (2002-03-01), Rintz et al.
patent: 6784784 (2004-08-01), Zehrung
patent: 2003/0145617 (2003-08-01), Jung
patent: WO 0075585 (2000-12-01), None
Jones Melvin
KED & Associates LLP
LG Electronics Inc.
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