Denso Corporation

Masami Taguchi

Nobuharu Kakehashi

Shin Nishida

Noriyuki Miyazaki

Takahiro Suzuki

Kouji Matsunaga

Koji Takahashi

Yasuhiro Sato

Tetsuya Takechi

Masakazu Nagaya

Masafumi Kurata

Kotaro Suda

Isao Kinoshita

Shinya Kumamoto

Katsuyuki Oosaki

In a vehicle air conditioner, an interior heat exchanger of a heat pump refrigerant cycle is disposed in an air conditioning case to heat and cool air passing therethrough. The air conditioning case has therein a bypass passage through which air flows to a downstream side while bypassing the interior heat exchanger. In a defogging mode, air mainly passing through the bypass passage is blown toward a windshield of the passenger compartment, and air mainly passing through the interior heat exchanger is blown toward a lower side in the passenger compartment. Accordingly, even by setting the heating capacity of the interior heat exchanger at a maximum degree, it can restrict a windshield from being fogged in the defogging mode.

Vehicle air conditioner with heat pump refrigerant cycle

If a refrigerant leaks from an interior heat exchanger, an outside air mode is switched ON, and a first bypass channel is opened to supply air, not having passed through the interior heat exchanger, to a passenger compartment through a defroster opening portion, while also supplying air, having passed through the internal heat exchanger, to the passenger compartment through a foot opening portion. Consequently, air having passed through the first bypass channel and thereby containing a considerable quantity of outside air free from the leaked refrigerant is supplied to the upper side of the passenger compartment, while air having passed through the interior heat exchanger and thereby containing the leaked refrigerant is supplied to the lower side of the passenger compartment, which makes it possible to prevent driver inhalation of the refrigerant.

Vehicle air conditioning air duct system

An air conditioning apparatus for a vehicle has a first side opening portion and a second side opening portion for blowing air toward right and left sides of a passenger compartment. A cool air passage and a warm air passage are provided adjacently to extend in a vehicle width direction, and the first and second side opening portions are arranged to be perpendicular to the vehicle width direction. A three-way branch duct is attached to the air conditioning apparatus in such a manner that air introduced into the first side opening portion is blown toward a right side of the passenger compartment and air introduced into the second side opening portion is blown toward a left side of the passenger compartment. Thus, a temperature difference between air blown from the right side and air blown from the left side of the passenger compartment can be reduced.

Air conditioning apparatus for vehicle

An air conditioning apparatus includes a seal wall having a seal surface to which one end surface of an air mixing door is contacted in the maximum heating state. A defroster warm air leading passage is constructed by the seal wall, a warm air guide portion and an inner surface of an air conditioning case. The defroster warm air leading passage is formed in a space opposite to the seal surface of the seal wall at a downstream air side of the seal wall. Because cool air hardly flows through the space opposite to the seal surface of the seal wall and the defroster warm air leading passage is formed by effectively using the space, the size of the air conditioning apparatus for a vehicle can be reduced.

Growing community of inventors

Ottobrunn, Japan

Masami Taguchi