Abstract: Provided are a heat exchanger that makes it possible to supply air of an appropriate temperature to a plurality of blowing ports of an air-conditioning unit, an air-conditioning unit that comprises the heat exchanger, and an air conditioner. This air-conditioning unit 10 comprises a heat exchanger 20 that exchanges heat between air and a coolant, a blower 11, and an air outflow part 12. The heat exchanger 20 comprises a plurality of tubes 21 in which the coolant flows, an inlet header 23, an outlet header 24, and a fin 22. The inlet header 23 includes: a low-temperature-side coolant inflow part 231 into which coolant that has a relatively low temperature can flow; and a high-temperature-side coolant inflow part 232 into which coolant that has a relatively high temperature can flow.

Abstract: This air conditioning device for a vehicle comprises: an indoor condenser; an indoor evaporator; a first expansion valve; a second expansion valve; a refrigerant line; an expansion valve control detector; and a controller. The expansion valve control detector is constituted by: only one temperature sensor that detects the temperature of refrigerant in an inter-expansion valve line of the refrigerant line; and only one pressure sensor that detects the pressure of the refrigerant in the inter-expansion valve line. During a cooling operation, the controller issues, to the first expansion valve, an opening command corresponding to a state quantity of the refrigerant that has been detected by the expansion valve control detector, and during a heating operation, the controller issues, to the second expansion valve, an opening command corresponding to a state quantity of the refrigerant that has been detected by the expansion valve control detector.

Abstract: A control device controlling a vehicular air conditioning system includes a defrosting operation control unit performing a defrosting operation in a refrigerant system when an outflow refrigerant temperature of an outdoor heat exchanger has become equal to or lower than a defrosting condition threshold value, a defrosting operation release instruction unit outputting a defrosting operation release instruction when the outflow refrigerant temperature has become equal to or higher than a defrosting release condition threshold value, and a vehicle information acquisition unit acquiring at least one of a position and a speed of a vehicle in which the vehicular air conditioning system is mounted. The defrosting operation release instruction unit outputs a defrosting operation release instruction even when the outflow refrigerant temperature is lower than the defrosting release condition threshold value in a case at least one of the position and the speed of the vehicle satisfies a predefined condition.

Abstract: A dial type switch mechanism is developed in which an installation space can be made as small as possible. In a dial type switch mechanism (10) furnished with a push type switch part provided in its center, and a dial switch part which operates a dial fitted around the push type switch part, there are provided: a substantially cylindrical dial knob (21), in the center of which a cavity is provided for the push type switch part to be installed; a ring-shaped joint ring (23), which is supported such that it can rotate freely relative to a front panel (6) and connects and rotates together with the dial knob (21); and a rotary bracket (24), which is joined to the joint ring (23), and in which a switch rotation shaft (24b) that operates the dial type switch part is connected together with a ring-shaped member (24a) via an arm (24c).

Abstract: A dial type switch mechanism is developed in which an installation space can be made as small as possible. In a dial type switch mechanism 10 furnished with a push type switch part provided in its center, and a dial switch part which operates a dial fitted around the push type switch part, there are provided: a substantially cylindrical dial knob 21, in the center of which a cavity is provided for the push type switch part to be installed; a ring-shaped joint ring 23, which is supported such that it can rotate freely relative to a front panel 6, and connects and rotates together with the dial knob 21; and a rotary bracket 24, which is joined to the joint ring 23, and in which a switch rotation shaft 24b that operates the dial type switch part is connected together with a ring-shaped member 24a via an arm 24c.