US 6,026,891 AGranted

Cooling device boiling and condensing refrigerant

AssigneeDenso Corporation

InventorsKoji Fujiyoshi, Shigeru Kadota, Kiyoshi Kawaguchi, Yukinori Suzuki, Shigeru Maehara, Koji Kishita

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Abstract

The cooling device of the present invention includes a casing divided into a first fluid passage and a second fluid passage by a fluid separation plate; a heat exchanger disposed to pass through the fluid separation plate, for receiving heat from high-temperature air flowing in the first fluid passage and for radiating the heat to the outside air flowing in the second fluid passage; an inside fan for blowing the high temperature air in the first fluid passage; an outside fan for blowing the outside air to the second fluid passage; and a thermistor for sensing a temperature of the high temperature air flowing in the first fluid passage. A rotational speed of each of the fans of the inside fan and the outside fan is variably controlled in response to a temperature detected by the thermistor with the controller. In this way, it is possible to cooling an interior of a closed box and to reduce the consumed electric power.

Claims15

Dependent claims

A cooling device boiling and condensing refrigerant, said cooling device comprising:

a casing having an interior;
a fluid separation plate for separating said interior into a closed space, a first fluid passage and a second fluid passage;
a heat exchanger disposed to pass through said fluid separation plate, for receiving heat from a first fluid flowing in said first fluid passage and radiating the heat into a second fluid flowing in said second fluid passage;
first fluid generating means for generating a flow of said first fluid in said first fluid passage;
second fluid generating means for generating a flow of said second fluid in said second fluid passage;
a temperature sensor for detecting a temperature of said first fluid flowing in said first fluid passage;
a controller for variably controlling a fluid flow generating output of said first fluid generating means and a fluid flow generating output of said second fluid generating means in response to a temperature detected by said temperature sensor;
and
a duct for distributing said first fluid discharged from said first fluid generating means through a plurality of openings to said closed space;
wherein said duct is movably disposed to change a ratio between an amount of said first fluid flowing through one of said openings and an amount of said first fluid flowing through another of said openings.

7 more elements

A cooling device accommodated in a housing for forming a closed space therein, for cooling said closed spaced by performing a heat exchange between air in said closed space and air outside said housing, said cooling device comprising:

a casing for forming therein a first heat transfer space communicating with said closed space and a second heat transfer space communicating with an outside of said housing;
a first blower for blowing air circulating between said first heat transfer space and said closed space;
a duct for distributing said blown air from said first blower through a plurality of openings to said closed space, said duct being movably disposed to change a ratio between an amount of said blown air flowing through one of said openings and an amount of said blown air flowing through another of said openings;
a second blower for blowing air outside said housing into said second heat transfer space;
and
a heat exchanger having a boiling portion and a condensing portion, said boiling portion receiving heat from air flowing through said first transfer space to boil refrigerant sealed in said heat exchanger, said condensing portion radiating heat of the refrigerant which has been boiled and gasified to the air flowing through said second heat transfer space to condense the refrigerant vapor;
wherein,
at least one of said first blower and said second blower has a fan case having an air path of a scroll shape therein,
said fan case includes an outer case having a box-shaped structure constructed by a wall surface of said casing and outer plates which form at least two parallel surfaces, and a side wall plate sandwiched between said two parallel surfaces to form said air path.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/872,223Filed 10 Jun 1997
Priority: JP 8-15087112 Jun 1996
Granted: 22 Feb 2000
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

H05K 7/207
For racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment: thermal management, e.g.…
F28D 15/0233
In which the medium condenses and evaporates, e.g. heat pipes: the conduits having a particular shape, e.g. non-circular cross-section, annular
F28D 15/0266
In which the medium condenses and evaporates, e.g. heat pipes: with separate evaporating and condensing chambers connected by at least one…
F28D 15/0275
In which the medium condenses and evaporates, e.g. heat pipes: arrangements for coupling heat-pipes together or with other structures, e.g. with…