Abstract: A technology of starting power supply from an external device to a load device in a shorter period, after detection of connection between the external device and the load device, is provided. A control device includes a first connector attachable to and detachable from an external device, a power supply path to electrically connect a load device and the first connector, a load switch to switch between connection and disconnection of the power supply path, a protection circuit to protect the load switch from an inrush current to the load switch, the protection circuit including at least a capacitor, and a control circuit. The control circuit is operable to switch the load switch from disconnection to connection after a total time of a preset set time and a first time based on a charging time of the capacitor which has elapsed since connection of the first connector to the external device was detected.

Abstract: A heat pump apparatus includes an evaporator evaporating a refrigerant, an electrochemical compressor compressing the refrigerant evaporated in the evaporator, and a condenser condensing the refrigerant compressed by the electrochemical compressor. The heat pump apparatus is structured such that the refrigerant in a wet steam state is supplied from the evaporator to the electrochemical compressor.

Abstract: A heat pump apparatus includes an evaporator evaporating a refrigerant, an electrochemical compressor compressing the refrigerant evaporated in the evaporator, and a condenser condensing the refrigerant compressed by the electrochemical compressor. The heat pump apparatus is structured such that the refrigerant in a wet steam state is supplied from the evaporator to the electrochemical compressor.

Abstract: The present invention provides a projector apparatus capable of ensuring stable operation, which is configured to efficiently cool an optical device by circulating air cooled by a cooling part of a refrigeration unit, and further to prevent moisture resulting from evaporation of dew adhered to the cooling part from adversely affecting the optical device when stopping the operation of the refrigeration unit. The optical chamber and the cooling chamber are enclosed respectively by adiabatic walls, the cooling chamber and the optical chamber are connected to each other through a cold air inlet port and a cold air outlet port, and the cold air inlet port and the cold air outlet port are provided with opening and closing mechanisms.

Abstract: A battery cooling/heating structure having a plate that is brought into contact with a battery to cool and heat the battery, including a medium pipe of plural arrays that are arranged substantially in parallel on the plate and through which refrigerant medium flows to cool the battery, each of the plural arrays having a straight portion, and a heater that is disposed between the straight portions of the plural arrays of the medium pipe and to which current is supplied to heat the battery through the plate, the medium pipe and the heater being integrally arranged within the same plane of the plate.

Abstract: There is disclosed a projector which supplies air cooled by a cooling unit to an optical element group, whereby the occurrence of dew condensation is prevented. The projector includes a cooling apparatus 11 disposed in a main body 1 and functioning as the cooling unit; a sealed or substantially sealed duct 30 through which cold air cooled by a cooler 18 of the cooling apparatus 11 is circulated and supplied to an optical element group 5 to cool the optical element group; an outside air introduction port 32 and an air discharge port 33 which function as a ventilation unit for introducing outside air into this duct 30 to discharge the air from the duct 30, dampers 34 and 35 for opening and closing these ports; and a controller C functioning as a control unit for controlling the dampers 34 and 35 to execute a ventilating operation in the duct 30.

Abstract: The present invention provides a projector apparatus capable of ensuring stable operation, which is configured to efficiently cool an optical device by circulating air cooled by a cooling part of a refrigeration unit, and further to prevent moisture resulting from evaporation of dew adhered to the cooling part from adversely affecting the optical device when stopping the operation of the refrigeration unit. The optical chamber and the cooling chamber are enclosed respectively by adiabatic walls, the cooling chamber and the optical chamber are connected to each other through a cold air inlet port and a cold air outlet port, and the cold air inlet port and the cold air outlet port are provided with opening and closing mechanisms.

Abstract: In the case that heat absorbing means that function in selectively different temperature ranges, are provided in a refrigerating cycle, an object is to provide a refrigerating apparatus capable of suppressing the deterioration of efficiency in either temperature range to make a highly efficient operation possible. The refrigerating apparatus includes a compressor, a radiator, first heat absorbing means, and second heat absorbing means provided in parallel with the first heat absorbing means. The first heat absorbing means includes first decompressing means, a first heat absorber, and a first heat exchanger capable of heat exchange between a refrigerant which has come from the first heat absorber and a refrigerant flowing in the first decompressing means.

Abstract: An object is to provide a two-stage expansion refrigerating device capable of performing control with low cost so that a pressure of a refrigerant which has flowed through a high-pressure-side expansion unit is an optimum pressure, the device comprises a control unit (a controller) which controls a compressor (a low-stage-side compression element and a high-stage-side compression element) and each expansion unit (a high-pressure-side expansion valve as a high-pressure-side expansion unit and a low-pressure-side expansion valve as a low-pressure-side expansion unit), and a temperature sensor (a temperature detection unit) which detects a temperature of the refrigerant which has flowed through the high-pressure-side expansion valve, and the controller estimates a pressure of the refrigerant which has flowed through the high-pressure-side expansion valve based on a temperature detected by the temperature sensor, and controls one of the high-pressure-side expansion valve and the low-pressure-side expansion valve

Abstract: In a refrigerant cycle apparatus which is operated at a supercritical pressure on a high-pressure side, for a purpose of maintaining or enhancing performances or reducing generation of clogging or a dimension of a capillary tube, a compressor has a first compression element, and a second compression element which compresses a refrigerant compressed by the first compression element, a gas phase refrigerant in an intermediate pressure receiver is sucked into the second compression element of the compressor, a liquid phase refrigerant in the intermediate pressure receiver is pressure reduced in a second pressure reducing device, and introduced into an evaporator, and the first pressure reducing device comprises a capillary tube on an upstream side of the refrigerant, and throttling means on a downstream side of the capillary tube.

Abstract: A refrigerating machine comprising a compressor, a radiator, a pressure-reducing device, a gas-liquid separator, plural heat absorbers functioning selectively in different temperature zones, a unit for allowing introduction of gas refrigerant separated in the gas-liquid separator into an intermediate pressure portion of the compressor, and a low pressure side circuit in which liquid refrigerant separated in the gas-liquid separator is circulated, wherein the low pressure side circuit is provided with at least a heat absorber functioning in a low temperature zone.

Abstract: There is disclosed a refrigerator in which a refrigerant circuit on a high-pressure side is operated in a supercritical state, and an object of the refrigerator is to improve a freezing capacity while securely preventing dew condensation at an opening edge by a condenser. In the refrigerator including the refrigerant circuit constituted of a compressor, the condenser, a throttle means and an evaporator; and a dew condensation preventive pipe constituting a part of the condenser and disposed along the opening edge of an insulation box member, the refrigerant circuit on the high-pressure side is operated in the supercritical state, and the dew condensation preventive pipe is positioned on an upstream side of a refrigerant downstream region of the condenser.

Abstract: It is an object of the present invention to provide a refrigerator which is able to improve the efficiency of the refrigerating cycle while avoiding causing the structure of the refrigerator to be complicated, and avoiding a cost increase. Refrigerator 30 includes a refrigerating cycle device 20 having a compressor 1, a radiator 2 connected to a discharge side of the compressor 1, a first expansion valve 31 connected to an exit side of the radiator 2, a gas-liquid separator 33 for separating a refrigerant, which is in a mixed gas-liquid state by being decompressed by the first expansion valve 31, into a gas refrigerant and a liquid refrigerant, a heat absorber 14 into which the liquid refrigerant discharged from the gas-liquid separator 33 flows, and a refrigerant pipe 6D for delivering the gas refrigerant discharged from the gas-liquid separator 33 into the middle pressure portion of the compressor 1; an outer case 40; an inner case 39; and a heat insulating material.

Abstract: An object is to provide a refrigerating device capable of realizing a high-efficiency operation in a case where a compressor having an intermediate pressure section is applied, and a refrigerator including this refrigerating device. A refrigerating device 30 includes: a compressor 1; a radiator 2; an expansion valve 3; a gas-liquid separator 4; and a heat absorbing unit 8 through which a liquid refrigerant discharged from this gas-liquid separator circulates. The refrigerating device further includes: a refrigerant pipe in which the refrigerant discharged from the heat absorbing unit 8 can be introduced into a suction port of the compressor 1 and which introduces a gas refrigerant separated by the gas-liquid separator 4 into the intermediate pressure section of the compressor 1; and a refrigerant pipe which introduces an intermediate-pressure refrigerant of the compressor 1 into the gas-liquid separator 4.

Abstract: There are provided a refrigerating device capable of efficiently performing a refrigerant recovering operation even in a case where there are disposed a plurality of heat absorbing units functioning in different temperature zones, and a refrigerator including this refrigerating device. A refrigerating device 30 includes a compressor 1, a radiator 2, an expansion valve 3, a gas-liquid separator 4, a first heat absorbing unit 10 through which a liquid refrigerant from this gas-liquid separator 4 flows, and a second heat absorbing unit 11, and the refrigerating device performs a refrigerant recovering operation of stopping circulation of the refrigerant into the second heat absorbing unit 11, operating the compressor 1, recovering the refrigerant stored in a heat sink 58, and sending the refrigerant to the gas-liquid separator 4 to store the refrigerant in a state in which circulation of the refrigerant into the first heat absorbing unit 10 is stopped after ending a freezing operation.

Abstract: An object is to provide a refrigerating device capable of realizing a high-efficiency operation and a refrigerator provided with the refrigerating device in a case where a compressor having an intermediate-pressure portion is applied, the refrigerating device comprises a compressor having an intermediate-pressure portion; a radiator connected to the compressor on a discharge side; and a heat absorbing unit connected to the radiator on an outlet side and including a pressure reducing unit and a heat sink, the heat absorbing unit on the outlet side is connected to a suction portion having a pressure which is lower than that of the intermediate-pressure portion of the compressor, a refrigerant pipe of the radiator on the outlet side is branched, one refrigerant pipe is connected to the heat absorbing unit, the other refrigerant pipe is connected to the intermediate-pressure portion of the compressor, and provided with a pressure reducing mechanism and a heat exchanger, and this heat exchanger is constituted in s

Abstract: An object is to provide a refrigerating device capable of realizing a high-efficiency operation in a case where there is disposed, in a refrigerating cycle, a compressor having: a plurality of heat sinks which function in different temperature zones; and an intermediate-pressure portion. The refrigerating device comprises: the compressor having the intermediate-pressure portion; and a radiator connected to a discharge side of the compressor, a refrigerant pipe on an outlet side of the radiator is branched, one of the branched refrigerant pipes is provided with a first heat absorbing unit including a first pressure reducing section and a first heat sink, and the other refrigerant pipe is provided with a second heat absorbing unit including a second pressure reducing section and a second heat sink.

Abstract: In the case that heat absorbing means that function in selectively different temperature ranges, are provided in a refrigerating cycle, an object is to provide a refrigerating apparatus capable of suppressing the deterioration of efficiency in either temperature range to make a highly efficient operation possible. The refrigerating apparatus includes a compressor, a radiator, first heat absorbing means, and second heat absorbing means provided in parallel with the first heat absorbing means. The first heat absorbing means includes first decompressing means, a first heat absorber, and a first heat exchanger capable of heat exchange between a refrigerant which has come from the first heat absorber and a refrigerant flowing in the first decompressing means.

Abstract: In a refrigerant cycle apparatus which is operated at a supercritical pressure on a high-pressure side, for a purpose of maintaining or enhancing performances or reducing generation of clogging or a dimension of a capillary tube, a compressor has a first compression element, and a second compression element which compresses a refrigerant compressed by the first compression element, a gas phase refrigerant in an intermediate pressure receiver is sucked into the second compression element of the compressor, a liquid phase refrigerant in the intermediate pressure receiver is pressure reduced in a second pressure reducing device, and introduced into an evaporator, and the first pressure reducing device comprises a capillary tube on an upstream side of the refrigerant, and throttling means on a downstream side of the capillary tube.

Abstract: A refrigerating machine is equipped with a compressor 1, a radiator 2, a pressure-reducing device 3, a gas-liquid separator 4, a unit for introducing the gas refrigerant separated in gas-liquid separator 4 into an intermediate pressure portion of the compressor, and a low pressure side circuit 9 in which liquid refrigerant separated in the gas-liquid separator is circulated. The low pressure side circuit 9 is provided with a heat absorbing unit 10 which selectively functions in different temperature zones. When the heat absorbing unit 10 is made to function in a high temperature zone, the gas refrigerant separated in the gas-liquid separator 4 is inhibited from being introduced into the intermediate pressure portion of the compressor 1 is inhibited, or allowed to be introduced into another intermediate pressure portion which is lower in pressure than the intermediate pressure portion.