Evaporator
AssigneeDenso Corporation
InventorsYoshiki Katoh, Etsuo Hasegawa, Ken Muto, Masaaki Kawakubo
Life of this patent
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Abstract
An evaporator operated with the carbon dioxide gas, comprises at least a unit core including a plurality of heat transmission tubes having a path with a refrigerant flowing therein, a first tank connected to an end opening of the heat transmission tubes and formed with a refrigerant supply path and a second tank connected to the other end opening of the heat transmission tubes and formed with a refrigerant discharge path. The width L1 of the unit core is given as 50 mm≦L1≦175 mm. The equivalent diameter d of the refrigerant supply path of the first tank and the refrigerant discharge path of the second tank is given as 4.7 mm≦d≦9.6 mm.
Claims41
An evaporator, operated with carbon dioxide gas, comprising at least a unit core including a plurality of heat transmission tubes having a path with a refrigerant flowing therein, a first tank connected to an end opening of the heat transmission tubes and formed with a refrigerant supply path and a second tank connected to the other end opening of the heat transmission tubes and formed with a refrigerant discharge path;
- wherein the width L1 of the unit core is given as 50 mm≦L1≦175 mm;
- wherein the equivalent diameter d of the refrigerant supply path of the first tank and the refrigerant discharge path of the second tank is given as 4.7 mm≦d≦9.6 mm.
An evaporator operated with carbon dioxide gas, comprising a core row including a plurality of transversely arranged unit cores each having a plurality of heat transmission tubes formed with a path in which the refrigerant flows, and a first tank connected to one end opening of the heat transmission tubes and formed with a refrigerant supply path and a second tank connected to the other end opening of the heat transmission tubes and formed with a refrigerant discharge path;
- wherein the width L1 of each unit core is given as 50 mm≦L1≦175 mm;
- and
- wherein the equivalent diameter d of the refrigerant supply path of the first tank and the refrigerant discharge path of the second tank of each unit core are given as 4.7 mm≦d≦9.6 mm.
An evaporator operated with the carbon dioxide gas, comprising a plurality of core rows arranged along the height with at least one transversely arranged unit core including a plurality of heat transmission tubes formed with a path in which the refrigerant flows, a first tank connected to one end opening of the heat transmission tubes and formed with a refrigerant supply path and a second tank connected to the other end opening of the heat transmission tubes and formed with a refrigerant discharge path;
- wherein the width L1 of the unit core of each core row is given as 50 mm≦L1≦175 mm;
- and
- wherein the equivalent diameter d of the refrigerant supply path of the first tank and the refrigerant discharge path of the second tank of the unit core of each core row is given as 4.7 mm≦d≦9.6 mm.
An evaporator operated with the carbon dioxide gas, comprising a plurality of core rows juxtaposed in the direction along the thickness and including at least one transversely arranged unit core having a plurality of heat transmission tubes formed with a path in which the refrigerant flows, a first tank connected to one end opening of the heat transmission tubes and formed with a refrigerant supply path and a second tank connected to the other end opening of the heat transmission tubes and formed with a refrigerant discharge path;
- wherein the width L1 of the unit core of each core row is given as 50 mm≦L1≦175 mm;
- and
- wherein the equivalent diameter d of the refrigerant supply path of the first tank and the refrigerant discharge path of the second tank of the unit core including the heat transmission tubes formed with a refrigerant down path are given as 4.7 mm≦d≦10.6 mm.
An evaporator operated with the carbon dioxide gas, comprising at least two core rows juxtaposed in the direction along the thickness and each including at least two transversely arranged unit cores each having a plurality of heat transmission tubes formed with a path in which the refrigerant flows, a first tank connected to one end opening of the heat transmission tubes and formed with a refrigerant supply path for supplying the refrigerant to the heat transmission tubes and a second tank connected to the other end opening of the heat transmission tubes and formed with a refrigerant discharge path for discharging the refrigerant from the heat transmission tubes;
- wherein the refrigerant discharged from the refrigerant discharge path of the second tank of the first unit core of the first core row is supplied to the refrigerant supply path of the first tank of the second unit core of the second core row in opposed relation to the second unit core of the first core row, and wherein the refrigerant discharged from the refrigerant discharge path of the second tank of the second unit core of the first core row is supplied to the refrigerant supply path of the first tank of the first unit core of the second core row in opposed relation to the first unit core of the first core row,
- wherein the width L1 of each unit core of each core row is given as 50 mm≦L1≦175 mm, and
- wherein the equivalent diameter d of the refrigerant supply path of the first tank and the refrigerant discharge path of the second tank of each unit core of each core row is given as 4.7 mm≦d≦9.6 mm.
An evaporator operated with carbon dioxide gas, comprising at least on core row arranged in the direction along the thickness and each including at least one transversely arranged unit core having a plurality of heat transmission tubes formed with a path in which the refrigerant flows, a first tank connected to one end opening of the heat transmission tubes and formed with a refrigerant supply path for supplying the refrigerant to the heat transmission tubes and a second tank connected to the other end opening of the heat transmission tubes and formed with a refrigerant discharge path for discharging the refrigerant from the heat transmission tubes;
- wherein all the heat transmission tubes of each core row have a refrigerant up path or a refrigerant down path, and the width L2 of each core row is given as 100 mm≦12≦350 mm;
- and
- wherein the equivalent diameter d of the refrigerant supply path of the first tank or the refrigerant discharge path of the second tank is given as 4.9 mm≦d≦10.6 mm.
Dependencies are inferred from the claim text.