Denso Corporation

Toyota Jidosha Kabushiki Kaisha

Yuhei Kunikata

Hiroshi Tanaka

Toshiki Sugiyama

Kazutaka Suzuki

Hiroyuki Osakabe

Akihiro Maeda

Takahide Ohara

Hajime Sugito

Hiroo Yamaguchi

Shinichi Morihira

Nobuharu Kakehashi

Yasutoshi Yamanaka

Norihisa Sasano

Isao Tamada

Takaki Okochi

Yuuki Mukoubara

Jun Hoshi

Tomohiro Hayase

Kenta Ueda

A flow path switching device includes: a first passage portion; a second passage portion; a first cover member attached to the first passage portion; and a second cover member attached to the second passage portion. The first passage portion includes a first passage connected to a fluid circuit and having a groove shape. The second passage portion includes a second passage connected to the fluid circuit to communicate with the first passage at a plurality of places and having a groove shape. The first passage portion, the second passage portion, and a drive unit are stacked in this order. The first cover member includes: a sealing portion to seal an opened portion of the first passage; and an opening arranged along an outer edge of the opened portion of the first passage.

Flow path switching device

An exhaust heat recovery device includes: a heating part for exchanging heat between a heating fluid and a working fluid; and a condensing part for exchanging heat between the working fluid evaporated by the heating part and a heated fluid to thereby condense the working fluid. The heating part has a tube in which the working fluid flows and whose upper end portion in a vertical direction is opened and whose lower end portion in the vertical direction is closed. The heating part has a storing part provided on an upper side in the vertical direction thereof, the storing part having a tube joint part to which the upper end portion in the vertical direction of the tube is joined and storing the working fluid condensed by the condensing part. The storing part has a condensed liquid holding part for holding the condensed working fluid.

Exhaust heat recovery device

In a ventilation duct of a cooling system, a level difference is formed between a wall located on a vehicle front side and a wall located on a vehicle rear side because a bottom end of the wall located on the vehicle front side is lower than a bottom end of the wall located on the vehicle rear side. The level difference makes a speed of a traveling wind flowing near an outlet faster than that flowing away from the outlet. Therefore, a pressure of the traveling wind flowing near the outlet decreases. As a result, air flows in the ventilation duct to be drawn to the neighborhood of the low-pressure outlet, and discharged out. Because cooling air including the traveling wind can be increased, heat radiation capacity of a radiator disposed in the ventilation duct is improved, and the cooling capacity of the cooling system can also be improved.

Cooling system for vehicle

A front end structure of a vehicle surrounding heat exchangers with ducts to thereby improve the heat exchangers in cooling ability, that is, a front end structure of a vehicle provided with heat exchangers positioned in an engine compartment in which an engine is mounted and exchanging heat between air and a heat medium, wherein the heat exchangers are surrounded by duct members sticking out to the vehicle front side, preventing hot air in the engine compartment from reaching the front end sides of the heat exchangers, and guiding air present at the vehicle front side to the heat exchangers and wherein among the duct members, a bottom duct positioned at the vehicle bottom side is formed with first through holes running through the vehicle in the up-down direction.

Front end structure of vehicle

In a front end structure of a vehicle, a heat exchanger is arranged at a position lower than a bumper reinforcement member, so a position of an engine hood is lowered. Electric auxiliary devices such as a radar, electronic control units for lights, and an air cleaner are arranged at a position higher than the bumper reinforcement member or at the rear of the bumper reinforcement member. By this arrangement, the electric auxiliary devices are arranged at a position which is less likely to be affected by the bumper reinforcement member in a case of light frontal crush.

Vehicle front end structure

In a front end structure of a vehicle, a front end panel and a fan shroud are provided as separate parts. The front end panel and the fan shroud form labyrinthine gap structure between them. The labyrinthine gap structure restricts air from leaking or entering through a space between the front end panel and the fan shroud. Accordingly, a heat exchanging performance of a heat exchanger is not decreased. Also, the front end panel and the fan shroud are separately exchangeable or repairable.

In a cooling device, a condensation unit is constructed by stacking plural unit plates and two outer plates. The plural unit plates are superimposed in a plate-thickness direction between the outer plates, and three sheets of unit plates are also arranged in the planar direction. The radiating fins are provided such that the width of the base is substantially equal to the width of the unit plate, and are arranged in parallel on one of the outer plates in the same manner as the unit plate. According to this structure, the number of the unit plates arranged in parallel with the outer plates and the number of the radiating fins are increased or decreased, so that it is possible to easily change the size of a radiating unit in accordance with a necessary cooling capacity.

Cooling device

A cooling apparatus boiling and condensing refrigerant is constructed to have a stacked construction by stacking a plurality of pressed members and comprises a refrigerant tank portion, a heat exchanging portion and a refrigerant diffusing portion. First openings for passing refrigerant and second openings for passing cooling water are formed in the pressed members used for the heat exchanging portion and the first openings communicate with internal spaces formed in the refrigerant tank portion and the refrigerant diffusing portion. According to the construction, as the cooling apparatus has the stacked construction, tubes and fins that constitute a conventional heat dissipating portion can be eliminated.

Cooling apparatus

A first intermediate plate C adjacent to a heat receiving plate A and a second intermediate plate D adjacent to the first intermediate plate C are provided so that the slit width of the openings (first opening ) in the first intermediate plate C is wider than that (second opening ) in the second intermediate plate D. In this way, when the first intermediate plate C and the second intermediate D are stacked, a tunnel structure is formed in which the opening dimension L (the opening dimension of the second openings ) of the communicating sections through which the first openings and the second openings communicate with each other is smaller than the length L (the opening dimension of the first openings ) of the tunnel portions (L >L ). Therefore, a heat-generating member with large density of heat generation can be effectively cooled.

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Kariya, Japan

Yuhei Kunikata