US 2004/0200612 A1 · Vehicle air conditioner

Abstract

Engine cooling water is charged to a flexible diaphragm member (3d) to expand the flexible diaphragm member (3d) so that the substantial sectional area of an air passage (3b) is decreased when a ventilation resistance, in an air conditioning casing (2) in a maximum heating or a foot mode, is increased. On the other hand, the engine cooling water is discharged from the flexible diaphragm member (3d) to deflate the flexible diaphragm member (3d) so that the substantial sectional area of the air passage (3b) is increased when a ventilation resistance, in the air conditioning casing (2) in maximum cooling or face mode, is decreased. Thus, the property of a fan (3) can be changed into a property suitable for foot mode having a large ventilation resistance, while heating air is being supplied.

Claims8

Dependent claims

An air conditioner for a vehicle, comprising

a fan (3);
an air conditioning casing (2) that is provided at the downstream side of the fan (3) in an air flow direction and that defines an air passage through which air is blown from the fan (3) to a vehicle compartment;
heating means (5) that is housed in the air conditioning casing (2) and that heats the air blown to a vehicle compartment;
and
a flexible diaphragm member (3d) to/from which a fluid is charged/discharged to vary the sectional area of the air passage (3b), said flexible diaphragm member being disposed in the air passage (3b) in the fan (3), wherein
the fluid is charged or discharged in accordance with a ventilation resistance in the air conditioning casing (2).

3 more elements

Dependencies are inferred from the claim text.

Vehicle air conditioner

Life of this patent

Vehicle air conditioner

Life of this patent

Abstract

Claims8