Refrigerating apparatus and modulator

A refrigerating apparatus, comprising:

• a coolant recirculation line;
• a compressor in the recirculation line for compressing the coolant;
• a condenser in the recirculation line for condensing the compressed coolant;
• a super cooler in the recirculation line for receiving the condensed coolant from the condenser;
• means in the recirculation line for expanding the condensed coolant from the super cooler by reducing the pressure thereof;
• an evaporator in the recirculation line for evaporating the reduced pressure coolant from the expanding means, the coolant passing through the evaporator being introduced into the compressor, so that a flow of the coolant in the recirculation line is created to thereby obtain a refrigerating cycle;
• and
• a modulator defining therein a chamber for receiving from the condenser only a part of the total amount of the coolant subjected to the refrigerant cycle;
• wherein said chamber has a closed top end and an open bottom end that are vertically spaced, with the bottom end being connected to the recirculation line at a position between the condenser and the super cooler;
• wherein the modulator and the recirculation line are disposed so that the refrigerating medium from the condenser always flows below said bottom open end of the chamber;
• wherein said modulator and said condenser being disposed so that the modulator and condenser are located in a substantially common temperature atmosphere;
• and
• wherein the bottom end of said chamber is, without substantially throttling its inner dimension, open to flow from the condenser, thereby allowing a gaseous state refrigerant in the flow to be freely introduced into the chamber by its buoyancy without substantial resistance.

A modulator for a refrigerating system having a recirculation passageway in which a compressor, a condenser and a pressure reducing means are disposed in series to thereby obtain a refrigerating cycle, said modulator comprising:

• means for defining a chamber for receiving from the condenser only a part of the total amount of coolant subjected to the refrigerating cycle, said chamber having a closed top end and an open bottom end that are vertically spaced, with the bottom end being connected to the recirculation passageway at a position between the condenser and the pressure reducing means;
• wherein the modulator and the recirculation passageway are disposed so that the refrigerating medium from the condenser always flows below said bottom open end of the chamber;
• wherein said modulator and said condenser being disposed so that the modulator and condenser are located in a substantially common temperature atmosphere;
• wherein the bottom end of said chamber is, without substantially throttling its inner dimension, open to flow from the condenser, thereby allowing a gaseous state refrigerant in the flow to be freely introduced into the chamber by its buoyancy without substantial resistance.

A modulator for a refrigerating system having a recirculation passageway in which a compressor, a condenser, a super cooler and a pressure reducing means are disposed in series to thereby obtain a refrigerating cycle, said modulator comprising:

• means for defining a chamber for receiving from the condenser only a part of the total amount of coolant subjected to the refrigerating cycle, said chamber having a closed top end and an open bottom end that are vertically spaced, with the bottom end being connected to the recirculation passageway at a position between the condenser and the super cooler;
• wherein the modulator and the recirculation passageway are disposed so that the refrigerating medium from the condenser always flows below said bottom open end of the chamber;
• wherein said modulator and said condenser being disposed so that the modulator and condenser are located in a substantially common temperature atmosphere;
• wherein the bottom end of said chamber is, without substantially throttling its inner dimension, open to flow from the condenser, thereby allowing a gaseous state refrigerant in the flow to be freely introduced into the chamber by its buoyancy without substantial resistance.

An air conditioning system for a vehicle having an engine room in which an internal combustion engine and a radiator are disposed, said system comprising:

• a coolant recirculation line;
• a compressor in the recirculation line for compressing the coolant, the compressor being connected to and driven by an engine rotating shaft;
• a heat exchanger having a condenser portion in the recirculation line for condensing the compressed coolant and a super cooler portion in the recirculation line for receiving the condensed coolant from the condenser;
• said heat exchanger being disposed in the engine room and adjacent to the radiator;
• means in the recirculation line for expanding the coolant from the super cooler by reducing the pressure thereof;
• an evaporator in the recirculation line for evaporating the coolant, the evaporated coolant being introduced into the compressor so that a flow of the coolant in the refrigerant line is created for obtaining a refrigerating cycle;
• and
• a modulator including means for defining a chamber for receiving from the condenser portion only a part of the total amount of coolant subjected to the refrigerating cycle, said chamber having a closed top end and an open bottom end that are vertically spaced, with the bottom end being connected to the recirculation line at a position between the condenser portion and the super cooler portion;
• wherein the modulator and the recirculation passageway are disposed so that the refrigerating medium from the condenser portion always flows below said bottom open end of the chamber;
• wherein said modulator and said heat exchanger being disposed so that the modulator and condenser portion are located in a substantially common temperature atmosphere;
• wherein the bottom end of said chamber is, without substantially throttling its inner dimension, open to flow from the condenser, thereby allowing a gaseous state refrigerant in the flow to be freely introduced into the chamber by it s buoyancy without substantial resistance.