Denso Corporation

Tetsuya Takeuchi

Akira Ito

Yoshiki Katoh

Kazutoshi Nishizawa

Shigeru Kadota

Tatsuhiko Nishino

Satoru Nakamura

Kouji Kishita

Yukinori Suzuki

A cooling device has a case defining a first space through which a first fluid flows and a second space through which a second fluid having the temperature lower than that of the first fluid flows. A first heat exchanger is disposed in the first space for performing heat exchange between the first fluid and a refrigerant, thereby to evaporate the refrigerant. A second heat exchanger is disposed in the second space for performing heat exchange between the second fluid and the refrigerant evaporated in the first heat exchanger, thereby to transfer heat of the refrigerant to the second fluid. The case defines a first dimension in a first direction and a second dimension in a second direction perpendicular to the first direction in a transverse cross-section. The second dimension is larger than the first dimension. The first space and the second space are arranged in the second direction.

Cooling device and method of manufacturing the same

A heat exchanger is provided with a header tank having therein a circulation portion in which fluid flows, and multiple tubes which are stacked in a longitudinal direction of the header tank. The circulation portion is communicated with interiors of the tubes, and partitioned into an inlet side passage and other passages. An inflow port member is arranged at a longitudinal-direction end of the inlet side passage, and provided with multiple openings for causing at least a mainstream flow and a substream flow of fluid introduced toward the tubes. The mainstream flow is substantially evenly flow-divided by the substream flow.

Heat exchanger

In a cooling system to cool down a hot object contained in a closed container, a heat exchanger is used in addition to an air-conditioner to share thermal load to dissipate heat generated by the hot object. Since the heat exchanger which requires almost no operating power shares heat load with the air-conditioner which consumes a high operating power, a total power consumption of the cooling system is considerably reduced. An evaporator and a condenser of the heat exchanger are separately installed in the cooling system, and both are connected by pipes through which refrigerant is circulated. The evaporator is placed to an optimum position to effectively absorb heat generated by the hot object. The condenser is installed outside the container to exhaust heat most effectively to outside air. The evaporator and the condenser may be combined before installation, if a whole structure of the cooling system permits. The heat generated by the hot object is led directly to the evaporator to enhance heat exchange efficiency.

Cooling system for cooling hot object in container

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Kariya, Japan

Tetsuya Takeuchi