CONSTRUCTION MACHINE

• Main Authors: AZUMA YUJI, YONEDA HIROSHI, MAMADA TOMONORI, KOIZUMI HIROSHI, KAWAGUCHI DAISUKE
• Format: Patent
• Language: English; Japanese
• Published: 23.03.2023
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; COOLING OF INTERNAL-COMBUSTION ENGINES; COOLING OF MACHINES OR ENGINES IN GENERAL; DREDGING; ENGINE PLANTS IN GENERAL; FIXED CONSTRUCTIONS; FOUNDATIONS; HEATING; HYDRAULIC ENGINEERING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; SOIL SHIFTING; STEAM ENGINES; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

To provide a construction machine capable of preventing an increase in overall power of a plurality of fans even when there is a restriction in arrangement relations between a plurality of heat exchangers and fans, and required air quantity, etc. are different among the heat exchangers.SOLUTION: In a construction machine, the number of rotations of a plurality of fans 41-46 for supplying cooling air to a plurality of heat exchangers 31-33 arranged in parallel are controlled by a controller 80. The plurality of heat exchangers are classified into a plurality of groups including a specific group having heat exchangers 31 and 32 adjacent to each other. Each fan is associated only with any one of the plurality of groups, and at least one fan is associated with each group. A separation wall 52 is arranged for separating a flow channel from the heat exchanger of each group to the corresponding fan. Two or more fans 41-44 are associated with the specific group, and a first fan 41 of the fans in the specific group is arranged in the border of first to second heat exchangers 31 and 32 adjacent to each other of the specific group. The controller outputs a control command to rotate all the fans in the specific group with the same number of rotations.SELECTED DRAWING: Figure 5 【課題】複数の熱交換器とファンの配置関係に制限があり熱交換器間で必要な風量等が異なる場合でも複数のファン全体の動力増大を防止できる建設機械を提供する。【解決手段】建設機械は、並列配置の複数の熱交換器３１～３３に冷却風を供給する複数のファン４１～４６の回転数をコントローラ８０が制御する。複数の熱交換器は隣り合う熱交換器３１、３２を有する特定グループを含む複数グループに分類される。各ファンを複数グループの何れか１つのみに対応づけ、各グループに少なくとも１つのファンを対応づける。各グループの熱交換器から対応するファンに至る流路を分離する分離壁５２を配置する。特定グループに２以上のファン４１～４４を対応付け、特定グループのファンのうち第１ファン４１を特定グループの隣り合う第１～第２熱交換器３１、３２の境界に配置する。コントローラは特定グループの全ファンに同一回転数で回転させる制御指令を出力する。【選択図】 図５