Abstract: A damping unit includes a damping bent portion having the form of a flat plate and bent from a damping side portion. The damping bent portion is thermally coupled to a heat dissipation surface. This transfers the heat generated by the damping unit from the damping bent portion, in addition to the damping side portion, to the heat dissipation surface of an inverter case.
Abstract: A centrifugal compressor includes: a compressor impeller; a motor including a stator and a rotor; and a housing. The rotor includes a tubular member, a magnetic body, a first shaft member and a second shaft member, an axial passage, and a plurality of radial passages. A dimension of each of the radial passages in a circumferential direction of the second shaft member gradually increases toward a radially outward side of the second shaft member. Each of the radial passages includes an opening that is opened at the outer peripheral surface of the second shaft member. The outer peripheral surface of the second shaft member has an interposed surface that is interposed between the opening of one of the radial passages and the opening of another of the radial passages adjacent to each other in the circumferential direction of the second shaft member.
Abstract: A motor-driven compressor, a housing structure for a motor-driven compressor, and a method of installing a soundproof cover on a motor-driven compressor are provided. A soundproof cover includes layers that include a first layer and a second layer. The first layer is placed over a housing, and the second layer is placed over the first layer. Each of the layers includes a first segment and a second segment. A second selection layer is located inward of a first selection layer. A boundary in the second selection layer is located above the boundary of the first selection layer.
Abstract: A battery temperature control system includes: a refrigeration cycle including a compressor and a heat exchanger; an accumulator; a condenser; a bypass for supplying refrigerant discharged from the compressor to the heat exchanger while bypassing the condenser; a valve mechanism; a temperature detector; a controller configured to switch the valve mechanism; and an introduction passage branched off from a passage extending from a discharge port of the compressor to a position in the refrigeration cycle upstream of the heat exchanger. The introduction passage supplies the refrigerant reduced in pressure to a part of a passage extending from a position in the refrigeration cycle downstream of the accumulator or downstream of the heat exchanger to a position in the refrigeration cycle upstream of the accumulator. The controller adjusts an opening degree of the variable throttle disposed in the introduction passage depending on a temperature detected by the temperature detector.
Abstract: An industrial vehicle includes a travel direction detector configured to detect a travel direction of the industrial vehicle, a vehicle speed sensor configured to detect a vehicle speed of the industrial vehicle, a travel direction determiner, an object detector, and a controller. The controller is set in a particular state when the vehicle speed of the industrial vehicle is equal to or higher than a first vehicle speed threshold value. In the particular state, even when a travel direction command is changed by the travel direction determiner, the controller recognizes that a traveling state of the industrial vehicle before the travel direction command is changed continues and the object detector operates based on the traveling state of the industrial vehicle before the travel direction command is changed.
Abstract: An electric compressor includes a compression part configured to compress fluid, an electric motor configured to drive the compression part, a housing accommodating the compression part and the electric motor, a soundproof cover covering the housing, and a nameplate attached to the housing and including a predetermined information. The housing includes a protrusion that is a part of the housing and protrudes out of the soundproof cover through a hole formed in the soundproof cover. The nameplate is provided on the protrusion.
Abstract: A centrifugal compressor includes a high-speed shaft, an impeller, a housing having a partition wall and a discharge passage, and a sealing member. The centrifugal compressor includes a bypass that is formed in the partition wall and has an inlet connected to the discharge passage and an outlet connected to a space between a back surface of the impeller and the partition wall. The inlet is located outward of the outlet and the outlet is located outward of the sealing member in a radial direction of the high-speed shaft. The bypass includes an outlet passage that extends to the outlet outwardly in the radial direction of the high-speed shaft. Air introduced from the inlet flows out of the outlet through the outlet passage so as to form a flow of air flowing away from the sealing member in the space.
Abstract: A centrifugal compressor includes a compressor impeller, a motor, an inverter, a housing including a motor chamber and an inverter chamber, a conductive member, an insertion hole, and a resin member sealing the insertion hole. A pressure in the motor chamber is higher than that in the inverter chamber. The resin member includes a first resin portion fixed to the housing and a second resin portion which is covered with the first resin portion and which covers the conductive member, the second resin portion having a Young's modulus smaller than that of the first resin portion. The first resin portion and the second resin portion, and the second resin portion and the conductive member are coupled by insert-molding.
Abstract: An obstacle detector is installed on a forklift. The obstacle detector includes a stereo camera for detecting an obstacle, and a position detector for detecting the position of the obstacle from a detection result of the stereo camera. In a detectable area, non-detection areas are preset. The non-detection areas are set at positions where a counterweight of the forklift is located. The position detector determines that an obstacle is not present in the non-detection areas.
Abstract: A power storage device includes power storage cells that are stacked in a stacking direction, and a temperature sensor configured to measure a temperature of at least one power storage cell to be measured among the power storage cells. Each of the power storage cells includes a positive electrode that includes a first current collector, and a positive electrode active material layer, a negative electrode that includes a second current collector, and a negative electrode active material layer, a separator that is arranged between the positive electrode and the negative electrode, and a sealing portion—that surrounds and seals the positive electrode active material layer and the negative electrode active material layer.
Abstract: A turbo fluid machine includes a housing having a motor chamber, a turbine chamber, a first shaft hole, and a second shaft hole; a drive shaft; and a sealing member that seals a gap between the motor chamber and the turbine chamber. The sealing member includes a first sealing member and a second sealing member that is located away from the first sealing member and between the first sealing member and the turbine chamber in an axial direction of the drive shaft. The drive shaft, the second shaft hole, the first sealing member, and the second sealing member cooperate to form a reservoir in which water contained in exhaust from a fuel cell is stored. The housing has a water discharge passage which is communicated with the reservoir and through which the water is discharged from the reservoir to an outside of the housing.
Abstract: A power conversion device includes two lower arm switching elements connected in parallel to each other and a lower arm driver circuit that drives the two lower arm switching elements. The two lower arm switching elements respectively include gate terminals and detection terminals used to detect counter-electromotive forces. The power conversion device includes a common connection line that connects the two detection terminals to each other and connects the two detection terminals to an addition circuit of the lower arm driver circuit. A combined electromotive force is transmitted via the common connection line.
Abstract: A motor-driven compressor includes an inverter device. The inverter device includes a noise reducing unit. The noise reducing unit includes common-mode choke coils and a smoothing capacitor. The common-mode choke coils include a first coil and a second coil. The first coil includes a first core, a first winding, and a second winding. The first core includes a first straight portion and a second straight portion. The second coil includes a second core, a third winding, and a fourth winding. The second core includes a third straight portion and a fourth straight portion. The first coil and the second coil are arranged side by side such that a current flowing through the first winding and the third winding generates an annular magnetic flux that passes through both of the first straight portion and the third straight portion.
Abstract: A turbo fluid machine includes: a housing; an electric motor; an impeller that compresses fluid; and a drive shaft connecting the impeller and the electric motor in the housing. The impeller chamber includes a first impeller chamber and a second impeller chamber distanced from each other in an axial direction of the drive shaft. The impeller includes: a first impeller that compresses the fluid to produce first compressed fluid; and a second impeller that compresses the first compressed fluid to produce second compressed fluid. The turbo fluid machine further includes: a compressed fluid passage through which the first compressed fluid is supplied to the second impeller chamber; and a plurality of flow straightening passages that extends inside the compressed fluid passage in a direction in which the compressed fluid passage extends, and through which the first compressed fluid is straightened and supplied to the second impeller chamber.
Abstract: A scroll electric compressor includes a housing, a rotary shaft, an electric motor, a fixed scroll, an orbiting scroll, a compression chamber, a discharge chamber, and an oil storage chamber. The housing has a discharge housing including an end wall, a first peripheral wall, a stepped portion, and a second peripheral wall. The fixed scroll has a flange in contact with the second peripheral wall. The stepped portion, the second peripheral wall, the flange, the outer peripheral wall cooperate to define an annular space around the fixed scroll. The annular space is in communication with the discharge chamber or the oil storage chamber.
Abstract: A vehicle controller is configured to execute a recognition process of recognizing a state of an object in a recognizable area set on a front side of a host vehicle, and a driving control process of performing a vehicle control of causing the host vehicle to travel based on a recognition result of the recognition process. The recognizable area includes a regular recognition area and a quasi-recognition area when a band-shaped scheduled traveling area along a travel route on which the host vehicle travels is curved. The driving control process includes performing the vehicle control according to a first driving mode when the recognition result of the recognition process indicates that an obstacle exists in the regular recognition area, and performing the vehicle control according to a second driving mode when the recognition result of the recognition process indicates that an obstacle exists in the quasi-recognition area.
Abstract: A controlling device of a forklift executes a stopping process of stopping lowering of a fork by a lift device when a detection sensor is separated from a first facing surface while the fork is being lowered by the lift device in a placing operation, a forward tilting process executed after execution of the stopping process, the forward tilting process controlling the tilt device to tilt the fork forward until the tilt angle reaches a limit value, and a returning process of sequentially obtaining values of the tilt angle during execution of the forward tilting process and tilting the fork rearward when the value of the tilt angle stops changing before the tilt angle reaches the limit value. The returning process is not executed in a case in which the tilt angle reaches the limit value.
Abstract: An image processing device of a person detection system mounted on a moving body is configured to: detect, in image data obtained from a camera, an area of the image data in which an obstacle appears; perform a center-of-gravity area-width adjustment process in which a position of center of gravity of the obstacle in the area of the image data is estimated and a width of the area of the image data is adjusted based on the position of center of gravity; and determine whether the obstacle in the area is a person by comparing a post-adjustment area obtained after the center-of-gravity area-width adjustment process is performed with dictionary data.
Abstract: An image processing device of a person detection system mounted on a moving body is configured to: detect, in image data obtained from a camera, an area in which an obstacle appears; determine whether the area meets an upper body detection process condition that the obstacle in the area is distanced from a road surface within a predetermined range from the camera; perform an upper body detection process in which the area of the image data is compared with upper body comparison data to determine whether the obstacle in the area is a person, for the area that meets the upper body detection process condition; and perform a whole-body detection process in which the area of the image data is compared with whole-body comparison data to determine whether the obstacle in the area is a person, for the area that does not meet the upper body detection process condition.
Abstract: A cooling device includes an upper flat plate-shaped member and a lower flat plate-shaped member disposed with a predetermined interval therebetween, a heat radiation fin configured to extend from the upper flat plate-shaped member toward the lower flat plate-shaped member and to form a flow path through which air flows between the upper flat plate-shaped member and the lower flat plate-shaped member, and a centrifugal fan having an inlet as an opening and an outlet configured to be open in a direction intersecting an opening direction of the inlet, wherein the centrifugal fan is disposed at a position separated from the upper flat plate-shaped member by a predetermined interval so that the outlet is open toward the flow path, and a protruding part that protrudes toward the centrifugal fan is provided on the upper flat plate-shaped member.