Abstract: A vehicle air conditioner has a blower unit having first and second inside/outside air switching doors, and an air conditioning unit having defroster and foot openings. The first inside/outside air switching door is operated to correspond to a set position of an inside/outside air switching lever. The second inside/outside air switching door is operated with an operation of an air outlet mode switching lever. When an air outlet mode in which air is blown from both the foot and defroster openings is set, the second inside/outside air switching door is set to an inside air mode position. Therefore, when the first inside/outside air switching door is set to an outside air mode position in this air outlet mode, only an inside/outside air double flow mode is set. As a result, a gap between a temperature of air blown from the defroster opening and a temperature of air blown from the foot opening is prevented from abruptly changing.

Abstract: A hot-water type heating apparatus includes a heat exchanger and a flow rate control valve for controlling hot water supplied to the heat exchanger. The heat exchanger includes an inlet side tank placed at a lower side, an outlet side tank placed at an upper side, and a core portion disposed between the inlet side tank and the outlet side tank. An inner space of the inlet side tank is partitioned into four spaces. Hot water from a hot water inlet pipe is divided into four flows, and flows into tubes of the core portion after passing through the four spaces. Because hot water from the hot water inlet pipe is compulsorily divided into four flows to pass through the four spaces, it can prevent hot water from mainly flowing through the core portion at a side proximate to the hot water inlet pipe and a hot water outlet pipe.