The frame is positioned along the outer-circumferential section of the vibrating body.
The clip has a projection for projecting toward the outer-circumferential surface of the body.
クリップは、本体の外周面へ向かって突出する凸部を有する。
The blade tip on the outer-circumferential edge section of the rotating-blade member has multiple recesses formed along the circumferential direction of the rotating-blade member.
前記回転刃部材の外周縁部の刃先には、複数の凹部が前記回転刃部材の周方向に沿って並んで形成されている。
A location facing the outer-circumferential surface of the rotor (1) is provided with an inflow-side opening (23a) for allowing a fluid to flow into the rotor-housing space (2a) from the exterior, and two outflow-side openings (25a, 26a) for allowing a fluid to flow out to the exterior from the rotor-housing space (2a).
ロータ1の外周面に対向する位置に、ロータ収容空間2aに外部から流体を流入させる流入側開口部23aと、ロータ収容空間2aから外部に流体を流出させる二つの流出側開口部25a,26aとを備える。
An unloaded-side end frame (12) is housed and held in a fitting state in an unloaded-side-end-frame support unit (8) of a frame (4), and a groove (18) having the groove direction as the axial direction is formed in the outer-circumferential surface of the unloaded-side end frame (12).
反負荷側エンドフレーム12がフレーム4の反負荷側エンドフレーム保持部8に内嵌状態に収納保持され、溝方向を軸方向とする凹溝18が反負荷側エンドフレーム12の外周面に凹設されている。
This heat treatment method is an impeller heat treatment method provided with: a heat-treatment preparation step for positioning an impeller in a vacuum furnace; an impeller-covering step for covering the outer-circumferential surface of the impeller in the circumferential direction, by using a soaking jig formed from a radiation conversion material for radiating transmitted heat as radiant heat; and a heat-treatment step having heating and cooling steps for subjecting the impeller covered with the soaking jig to a heat treatment by heating or cooling from the periphery thereof using a heater.
この熱処理方法は、インペラの熱処理方法であって、真空炉内にインペラを配置する熱処理準備工程と、伝達した熱を輻射熱として放射する輻射変換材で形成された均熱化治具によって、インペラの外周面を周方向に覆うインペラ被覆工程と、均熱化治具で覆われたインペラを、ヒータによって周囲から加熱または冷却することで熱処理を行う加熱工程及び冷却工程を有する熱処理工程とを備える。
A combination of a cylinder and a piston ring equipped with a cylinder (62) for an internal combustion engine and a piston ring (40) for sliding along the inner-circumferential surface of the cylinder, wherein: at least the sliding surface-side of the cylinder comprises an aluminum alloy containing Si in the amount of 8-22 mass%, inclusive, and including particles of at least one type selected from a group consisting of Si, Al2O3, and SiO2 particles having a diameter of 3 μm or more; and at least the outer-circumferential surface of the piston ring is covered with a hard-carbon film (14) configured from only hydrogen and carbon, or from hydrogen, carbon and nitrogen.
内燃機関のシリンダ(62)と該シリンダの内周面を摺動するピストンリング(40)とを備えたシリンダとピストンリングとの組み合わせであって、シリンダの少なくとも摺動面側は、8質量%以上22質量%以下のSiを含み,且つ粒径が3μm以上のSi,Al2O3及びSiO2の群から選ばれる1種以上の粒子を含むアルミニウム合金からなり、ピストンリングの少なくとも外周面に、水素と炭素のみ、又は水素と炭素と窒素によって構成される硬質炭素被膜(14)が被覆されている。
This joint structure is a steel-pipe-pile joint structure for joining a first steel-pipe pile and a second steel-pipe pile to one another in series, and equipped with an outer-engaging-end part which is the opening end of the first steel-pipe pile, and a columnar inner-engaging-end part for forming a part to be inserted into the outer-engaging-end part and located at one end of the second steel-pipe pile, wherein: the outer-engaging-end part has a plurality of outer-engaging projections for projecting from the inner-circumferential surface thereof toward the inside in the radial direction, an outer-engaging groove part formed between the outer-engaging projections, and an outer-engaging coupling groove formed at a location toward the inside in the axial direction in relation to the outer-engaging projections and the outer-engaging groove; and the inner-engaging-end part has a plurality of inner-engaging projections projecting from the outer-circumferential surface thereof toward the outside in the radial direction.
この継手構造は、第1鋼管杭と第2鋼管杭とを直列に接合する、鋼管杭の継手構造であって、前記第1鋼管杭の開口端である外嵌端部と;前記第2鋼管杭の一端において前記外嵌端部に挿入される部位をなす円柱状の内嵌端部と;を備え、前記外嵌端部は、その内周面から径方向内側へ向かって突出する複数の外嵌凸部と、前記外嵌凸部の間に形成される外嵌溝部と、前記外嵌凸部及び前記外嵌溝部よりも軸芯方向内側の位置に形成される外嵌係合溝と、を有し、前記内嵌端部は、その外周面から径方向外側へ向かって突出する複数の内嵌凸部を有する。
A heat exchanger according to the present invention, in which a cylindrical channel is formed by the inner-circumferential surface of the outside heat-exchanger tube and the outer-circumferential surface of the inside heat-exchanger tube, and heat is exchanged between a first heat transfer medium flowing through the channel and a second heat transfer medium on the outside of the outside heat-exchanger tube or on the inside of the inside heat-exchanger tube, wherein: the cylindrical channel is provided with an intermediate heat-exchanger tube in which convex and concave sections are formed in an alternating manner in the circumferential direction of the channel; at least some of the peaks of the convex sections or at least some of the troughs of the concave sections of the intermediate heat-exchanger tube contact the heat-exchanger tube that contacts the second heat transfer medium among the outside and inside heat-exchanger tubes; and a plurality of openings extending from the outer-circumferential surface of the intermediate heat-exchanger tube to the inner-circumferential surface thereof are formed in a region between the peaks and troughs of the intermediate heat-exchanger tube.
本発明に係る熱交換器は、外側伝熱管の内周面と内側伝熱管の外周面とで、筒状の流路が形成され、その流路を流れる第1熱媒体と、外側伝熱管の外側又は内側伝熱管の内側の第2熱媒体と、が熱交換する熱交換器であって、筒状の流路には、その流路の周方向に亘って凸部と凹部とが交互に形成された中間伝熱管が設けられ、中間伝熱管の、凸部の頂部の少なくとも一部又は凹部の底部の少なくとも一部は、外側伝熱管及び内側伝熱管のうちの第2熱媒体に接する伝熱管に当接し、中間伝熱管の、頂部と底部との間の領域に、中間伝熱管の外周面から内周面までを貫通する複数の第1開口部が形成されたものである。