Abstract: The present invention provides a rotary machine intake casing which, by using a simple configuration, makes it possible to reduce asymmetry between the flow speed of air flowing in a forward direction relative to the direction of rotation of a rotating shaft of a compressor and the flow speed of air flowing in the opposite direction.

Abstract: An image signal evaluator calculates a first image signal evaluation value based on an image signal captured in a state where a focusing position is adjusted to an imaging target. A water droplet adhesion determiner determines whether there is a possibility that a water droplet may be adhered onto an imaging window by comparing a first image signal evaluation value and a threshold value. In a case where it is determined that there is the possibility, an image signal evaluator calculates a second image signal evaluation value based on an image signal captured in a state where the focusing position is adjusted to a position of a close distance. The water droplet adhesion determiner determines whether a water droplet is adhered onto the imaging window by comparing the first image signal evaluation value and the second image signal evaluation value.

Abstract: A cutting insert has an upper surface, a lower surface, a side surface connecting the upper and lower surfaces. An intersecting edge between the upper surface and the side surface is provided with a cutting edge. The cutting edge has, in order, a second major cutting edge, a first major cutting edge, a corner cutting edge connected to these major cutting edges, and a flat cutting edge. An obtuse interior first angle (?) is formed by the second and first major cutting edges. A interior second angle (?) formed by the flat cutting edge and the first major cutting edge is larger than an interior third angle (?) formed by the flat cutting edge and the second major cutting edge. A land is provided adjacent to the first major cutting edge, a width of the land increasing toward the first corner cutting edge.

Abstract: A method for assembling a compressor comprises: a bundle arrangement step in which a bundle is arranged behind the opening of a casing in the insertion direction; a first insertion step in which the front end of the bundle is inserted into the casing by moving the bundle by means of both an outside traveling device and an intermediate traveling device; and a second insertion step in which the intermediate traveling device is removed from the bundle and the bundle is inserted further inward into the casing by moving the bundle by means of both an inside traveling device and the outside traveling device.

Abstract: There is provided a liquid circulation apparatus for circulating liquid through a plurality of discharge heads that includes discharge nozzles. The liquid circulation apparatus includes a liquid circulating channel to circulate the liquid via the plurality of discharge heads, a first manifold connected to each supply port of the plurality of discharge heads, a second manifold connected to each discharge port of the plurality of discharge heads, a discharging channel to discharge the liquid in the second manifold, and a bubble-discharging channel separate from the discharging channel, to discharge bubbles in the second manifold.

Abstract: A cutting insert including a first end surface, a second end surface and a peripheral side surface extending therebetween. The first and second end surfaces each having one substantially quadrangular portion and two substantially semicircular portions which are respectively joined to two opposing sides of the substantially quadrangular portion. An intersecting edge between each of the first and second end surfaces and the peripheral side surface is provided with a cutting edge. The cutting edge is formed in at least part of the substantially semicircular portion. At least part of a portion of the peripheral side surface which is adjacent to the substantially quadrangular portion of each of the first and second end surfaces, and at least part of a portion of the peripheral side surface which is adjacent to the substantially semicircular portion, each have a function of coming into contact with an insert seat.

Abstract: A centrifugal compressor includes an impeller that rotates about an axis; an inlet guide vane including a plurality of vanes disposed on an upstream side of the impeller and provided at intervals in a circumferential direction of the axis, the inlet guide vane being directed inward in the radial direction between adjacent vanes, and forming a guide flow path having an exit angle in the radial direction and guiding the fluid; and a suction flow path that introduces the fluid from a part in a circumferential direction into the inlet guide vane. The exit angle of the vane of the first region on the one side when viewed from the suction flow path in the inlet guide vane is displaced to the suction flow path side as compared to the exit angle of the vane of a second region on the opposite side of the one side.

Abstract: A centrifugal compressor includes a casing body (11) configured to rotatably support a rotation shaft (2) and an impeller (3) fixed to the rotation shaft around an axis (O), the casing body in which an intake volute (B1) which has a ring shape centered on the axis and through which a processing gas (G) is caused to flow in a direction of the axis and is introduced into a flow channel of the impeller, and a discharge volute which has a ring shape centered on the axis and through which the processing gas is discharged from the flow channel are formed; and a plurality of intake nozzles (16) which communicate with the intake volute and are able to cause the processing gas to flow into the intake volute from the outside and are provided at intervals in a circumferential direction around the rotation shaft.

Abstract: Provided is a centrifugal compressor impeller capable of improving machine operation efficiency, by making the total pressure distribution of a fluid that flowed into a vaneless diffuser constant. To this end, the provided centrifugal compressor impeller has a plurality of vanes radially provided around a rotating shaft, uses centrifugal force produced by rotating along with the rotating shaft, pumps a fluid (G) taken in from the leading edge side of the vanes to the outside in the radial direction of the rotating shaft from the trailing edge side of the vanes, and thereafter, discharges the fluid (G) into a vaneless diffuser. Furthermore, the edge front end and the edge rear end of the trailing edge are positioned to the outside in the radial direction of the rotating shaft relative to the edge center section of the trailing edge.

Abstract: A rotary machine includes a guide section formed in an annular flow path in communication with a suction volute at an inner circumferential side of the suction volute, at which a plurality of vanes are installed in a circumferential direction, and configured to guide a fluid introduced from the suction volute, and an impeller connected to the guide section in the axial direction and into which the fluid guided by the guide section is introduced. The suction volute has an annular opening section in communication with the guide section at the inner circumferential side, and an inner wall surface extending from the opening section toward the axial direction of the impeller in the axial direction to increase a width dimension in the axial direction and connected to a partition section at an opposite side of the suction nozzle.

Abstract: A bundle guiding device includes an inner roller mounted on a front portion of a bundle in an insertion direction where the bundle is to be inserted into a casing and configured to roll on an inner peripheral surface of the casing, an outer roller mounted on a rear portion of the bundle in the insertion direction where the bundle is to be inserted into the casing and configured to travel on a rail member, and a position adjusting mechanism configured to adjust a position of the bundle in a horizontal direction orthogonal to the insertion direction by applying an adjusting force to a receiving portion, one of the position adjusting mechanism and the receiving portion being on the bundle, and the other of the position adjusting mechanism and the receiving portion being on one of a base surface and the rail member.

Abstract: A tool body having an insert seat and a cutting tool which allow a cutting insert to be stably held are provided. A tool body according to the present invention is a tool body having an insert seat for mounting a cutting insert on the tool body, wherein the insert seat has a base surface and a side wall surface which extends so as to intersect with the base surface. The base surface has a contact surface and a contact projected part which come into contact with the cutting insert. A contact part of the contact surface is comprised of a surface, and a contact part of the contact projected part has a linear shape or a point shape.

Abstract: The present invention relates to a tool body provided with at least one insert seat. The insert seat comprises a bottom wall surface and a side wall surface. The side wall surface comprises a first side wall surface and a second side wall surface. The first side wall surface comprises at least two surface portions. The first surface portion is a curved surface in a recessed shape, and the second surface portion is a curved surface in a recessed shape having a greater curvature radius than that of the first surface portion or a flat surface. The two surface portions both come into contact with a cutting insert.

Abstract: In order to reduce the rotating stall onset flowrate, this centrifugal compressor comprises: a vaneless diffuser (12) provided on a discharge outlet (6B) side of an impeller (6); and a fluid circulation flow path (21) having an inlet (21A) that opens into a first wall section (22) of a hub casing (2B) forming the vaneless diffuser (12) and also having an outlet (21B) that opens into a second wall section (23) of the hub casing (2B) facing a hub disk (6C) rear surface in the impeller (6). As a result of causing the first wall section (22) to protrude on to a wall section (31) side of the shroud casing (2A), the flow path width (D) of the vaneless diffuser (12) is smaller than the width (W) of the discharge outlet (6B) in the impeller (6).

Abstract: A cutting insert has an upper surface, a lower surface, a side surface connecting the upper and lower surfaces. An intersecting edge between the upper surface and the side surface is provided with a cutting edge. The cutting edge has, in order, a second major cutting edge, a first major cutting edge, a corner cutting edge connected to these major cutting edges, and a flat cutting edge. An obtuse interior first angle (?) is formed by the second and first major cutting edges. A interior second angle (?) formed by the flat cutting edge and the first major cutting edge is larger than an interior third angle (?) formed by the flat cutting edge and the second major cutting edge. A land is provided adjacent to the first major cutting edge, a width of the land increasing toward the first corner cutting edge.

Abstract: A polygonal cutting has opposing first and second end surfaces connected by a side surface, and a plurality of cutting edges formed between the end surfaces and the side surface. Each cutting edge is formed at corner and includes a corner cutting edge and a major cutting edge connected to the corner cutting edge. A rake surface formed along the cutting edge on first the end surface is inclined toward the second end surface. In a side view of the cutting insert, the major cutting edge includes an inclined part which is inclined so as to approach the second end surface from the corner cutting edge. A portion of the rake surface along the inclined part is formed such that an angle of inclination toward the second end surface increases toward the corner in a direction along the intersecting edge between the first end surface and the side surface.

Abstract: Provided is a multilayered structure comprising at least one fine cellulose fiber nonwoven fabric layer made of a fine cellulose fiber, wherein the multilayered structure is characterized in that the mean fiber diameter of the fine cellulose fiber forming the fine cellulose fiber non-woven fabric layer is 0.005 to 0.5 ?m, and the mean thickness of the multilayered structure is 10 to 200 ?m, the density thereof is 0.10 to 0.90 g/cm3, and the permeability resistance thereof is 2000 s/100 ml or more. Also provided are an energy recovery ventilation sheet made of this multilayered structure, an energy recovery ventilation element using this energy recovery ventilation sheet as a partitioning material for partitioning two types of air flow of different temperature and/or humidity, and a energy recovery ventilator using this energy recovery ventilation element.