Abstract: Heat pump and a method for controlling a cooling/heating capability thereof, in which a capacity varying device is improved for adjusting a cooling/heating capability, the heat pump including a compressor having an inlet for drawing, and compressing low temperature and low pressure refrigerant, and an outlet for discharging the compressed refrigerant, a four way valve for connecting the outlet and the inlet to an indoor heat exchanger and an outdoor heat exchanger selectively depending on cooling/heating, the indoor heat exchanger for evaporating/condensing the refrigerant by heat exchange with room air in cooling/heating respectively, the outdoor heat exchanger for evaporating/condensing the refrigerant by heat exchange with external air, a capillary tube having a reduced diameter for expansion of the refrigerant, a change over valve having a plunger movable by a pressure difference provided therein, and a connection tube connected the indoor heat exchanger and a four way valve, and a bypass tube connected b

Abstract: Air condition for individual cooling/heating including a front compartment and a rear compartment separated by a partition plate made of an insulating material for forced inlet and outlet of external air therethrough respectively, at least two heat exchanger parts each in upper parts of the front and rear compartments and lower parts of front and rear compartments for making heat exchange with external air passing through the front compartment and the rear compartment respectively, first drawing means and second drawing means mounted in an upper portion or a lower portion of the front compartment or the rear compartment respectively for forced circulation of the external air through respective compartments, and driving means for driving the first and second drawing means, each of the heat exchanger parts includes thermoelectric modules each connected to a power source for absorbing heat at a heat absorptive part and discharging the heat from a heat dissipative part provided opposite to the heat absorptive par

Abstract: Heat pump and a method for controlling a cooling/heating capability thereof, in which a capacity varying device is improved for adjusting a cooling/heating capability, the heat pump including a compressor having an inlet for drawing, and compressing low temperature and low pressure refrigerant, and an outlet for discharging the compressed refrigerant, a four way valve for connecting the outlet and the inlet to an indoor heat exchanger and an outdoor heat exchanger selectively depending on cooling/heating, the indoor heat exchanger for evaporating/condensing the refrigerant by heat exchange with room air in cooling/heating respectively, the outdoor heat exchanger for evaporating/condensing the refrigerant by heat exchange with external air, a capillary tube having a reduced diameter for expansion of the refrigerant, a change over valve having a plunger movable by a pressure difference provided therein, and a connection tube connected the indoor heat exchanger and a four way valve, and a bypass tube connected b

Abstract: Air conditioner for individual cooling/heating including a front compartment and a rear compartment separated by a partition plate of an insulating material for forced inlet and outlet of external air therethrough respectively, at least two heat exchanger parts each in upper parts of the front and rear compartments and lower parts of front and rear compartments for making heat exchange with external air passing through the front compartment and the rear compartment respectively, first drawing means and second drawing means mounted in an upper portion or a lower portion of the front compartment or the rear compartment respectively for forced circulation of the external air through respective compartments, and driving means for driving the first and second drawing means, each of the heat exchanger parts includes thermoelectric modules each connected to a power source for absorbing a heat at a heat absorptive part and discharging the heat from a heat dissipative part provided opposite to the heat absorptive part