Abstract: The purpose of the present invention is to prevent the flow of air flowing from the outside of a cover part into the cover part via an ink droplet passing hole as air accompanying printing droplets outflows. An inkjet recording device is provided with: a recording mechanism (printing mechanism) having an ink room 101 that ejects an ink column 107, charging electrodes 103A and 103B that charge ink droplets 106 generated from the ink column 107, and deflection electrodes 105A and 105B that deflect charged ink droplets 106A; and a cover part 118 that has an ink droplet passing hole 117 through which the ink droplets 106A deflected by the deflection electrodes 105A and 105B pass and covers the recording mechanism. The inkjet recording device causes the ink droplets 106A to land onto a recording object 116 that moves relative to a recording head 100 to perform recording. A vent hole 130 is provided in a lateral surface of the cover part 118.

Abstract: The purpose of the present invention is to prevent the flow of air flowing from the outside of a cover part into the cover part via an ink droplet passing hole as air accompanying printing droplets outflows. An inkjet recording device is provided with: a recording mechanism (printing mechanism) having an ink room 101 that ejects an ink column 107, charging electrodes 103A and 103B that charge ink droplets 106 generated from the ink column 107, and deflection electrodes 105A and 105B that deflect charged ink droplets 106A; and a cover part 118 that has an ink droplet passing hole 117 through which the ink droplets 106A deflected by the deflection electrodes 105A and 105B pass and covers the recording mechanism. The inkjet recording device causes the ink droplets 106A to land onto a recording object 116 that moves relative to a recording head 100 to perform recording. A vent hole 130 is provided in a lateral surface of the cover part 118.

Abstract: There is provided a novel inkjet recording device capable of preventing an ink droplet from being attached to and firmly fixed to a bent pipe part formed at a gutter. The device has a configuration where separately from air flowing through an inflow opening 36 of a gutter 29, secondary air is supplied to a bent region 34bent of a bent pipe part 34, the secondary air flowing in the same direction as air flowing out from an outflow 34out side of the bent pipe part 34. The ink droplet is prevented from being attached and fixed to the bent pipe part 34 formed at the gutter 29 because the secondary air can increase a flow rate of an air flow in an inner peripheral surface region 40 on an inner side of the bent pipe part 34.

Abstract: An object of the present invention is to provide a control device of an injector capable of suppressing the influence of pressure reduction boiling even if pressure in a combustion chamber is low. In a case where the temperature of fuel injected from a fuel injection valve is within a set high temperature region and the pressure of the combustion chamber is within a set low pressure region, the control device of an in-cylinder direct injection-type injector according to the present invention controls to increase a lift amount of the injector as compared to the case of a low temperature region or a high pressure region.

Abstract: A fuel injection valve is a fuel injection valve for injecting fuel to a combustion chamber of an internal combustion engine, which includes a valve body that is lifted by any one of a first lift amount of a maximum valve body lift amount and a second lift amount smaller than the first lift amount. In a case where the maximum valve body lift amount of the valve body is the first lift amount, a flow path area of a seat portion is larger than a sum of flow path areas of all injection holes, and in a case where the maximum valve body lift amount of the valve body is the second lift amount, the flow path area of the seat portion is smaller than the sum of flow path areas of all the injection holes.

Abstract: Provided is a fuel injection device and a control unit therefor which enable reliable ignition even in a case where fuel pressure is low immediately after starting an engine. In the control unit for controlling an injector injecting fuel into an internal combustion engine, a plurality of injectors is provided in the internal combustion engine, a static flow rate of a first injector is configured to be smaller than a static flow rate of a second injector. In a case where a fuel pressure of fuel supplied by a pressurizing unit is lower than a set value set lower than a fuel pressure in warming up, an injection ratio of the first injector is controlled to increase according to a difference between a fuel pressure of fuel from the pressurizing unit and a fuel pressure in warming up.

Abstract: The conventional penetration control has a problem that the penetrations of all the injection holes change. An object of the invention is to provide a fuel injection valve having a simple structure and capable of selectively controlling a penetration force of spray injected in a piston direction by a lift amount. In order to solve the above problem, the fuel injection valve of the invention is a fuel injection valve for injecting fuel to a combustion chamber of an internal combustion engine, which includes a valve body that is lifted by any one of a first lift amount of a maximum valve body lift amount and a second lift amount smaller than the first lift amount.

Abstract: An object of the present invention is to provide a control device of an injector capable of suppressing the influence of pressure reduction boiling even if pressure in a combustion chamber is low. In a case where the temperature of fuel injected from a fuel injection valve is within a set high temperature region and the pressure of the combustion chamber is within a set low pressure region, the control device of an in-cylinder direct injection-type injector according to the present invention controls to increase a lift amount of the injector as compared to the case of a low temperature region or a high pressure region.

Abstract: The agricultural material includes a cellulose acylate layer and a polymer layer. The cellulose acylate layer is formed of cellulose acylate. The polymer layer is provided on a first CA surface, which is one surface of the cellulose acylate layer. The polymer layer has a moisture permeation resistance of at most 7.5×10?4 m2·day/g per 1 ?m of thickness and is formed of a polymer different from cellulose acylate. The agricultural material has a tear strength of at least 0.10 N.

Abstract: To attempt to reduce the sizes of apparatuses while ensuring insulation performance with simpler configurations. In a gas circuit breaker according to the present invention, a high-temperature-gas guiding section is provided at an axial-end section of a fixed main conductor that is connected to a fixed lead conductor connected to a power system, and that has an open section for discharging an insulating gas having an increased temperature and an increased pressure due to an arc produced at the time of interruption. The high-temperature-gas guiding section has a plurality of holes for discharging, into a filled container, a high-temperature gas produced by heating the insulating gas filling the filled container, and is formed such that the directions of the plurality of holes are oblique to the axial direction of the fixed main conductor.

Abstract: A fuel injection valve includes a valve seat, a valve element, and a plurality of swirl fuel injection passages. The plurality of swirl fuel injection passages are divided into a first swirl fuel injection passage group that forms a first spray and a second swirl fuel injection passage group that forms a second spray that is oriented in a direction different from a first direction.

Abstract: Provided is a fuel injection valve which can be easily processed and can realize sufficient atomization while suppressing spreading of spray.

Abstract: An object of the present invention is to provide a fuel injection valve that realizes atomization while suppressing spread of a spray. A fuel injection valve includes: a valve body and a valve seat that cooperate to open and close a fuel passage; a swirl imparting chamber that is arranged on a downstream side of an opening and closing portion of the fuel passage by the valve body and the valve seat, and imparts a swirling velocity to fuel; a communication passage arranged on an upstream side of the swirl imparting chamber and connected to the swirl imparting chamber; and fuel injection holes and that are open at a bottom surface of the swirl imparting chamber and injects fuel imparted with the swirling velocity in a swirl passage to an outside, the fuel injection holes and configured such that cross-sectional areas of the fuel injection holes and increase from the inlet to the outlet.

Abstract: It is prevented that residual fuel left in the vicinity of an injection nozzle outlet is carbonized to cause adherence of the carbonized fuel as deposit and changing of a spray pattern or an injection flow rate. A fuel injection valve includes a seat portion on which a valve body is seated and a seat portion in which an injection hole for injecting fuel downstream from the seat portion is formed, in which a concave surface denting in a direction opposite to a fuel injecting direction is formed on an outer peripheral side away from the injection hole at an end face located downstream of the seat member, and the concave surface is formed such that a material surface in an outer peripheral region has a larger wettability for the fuel than in an inner peripheral region.

Abstract: A spark-ignition direct fuel injection valve includes, at least, a seat member provided with a fuel injection hole and a valve seat and a valve body which controls fuel injection from the injection hole by contacting and separating from the valve seat. In the spark-ignition direct fuel injection valve: the injection hole has an injection hole inlet which is open inwardly of the seat member and an injection hole outlet which is open outwardly of the seat member; an opening edge of the injection hole inlet has a first round-chamfered portion formed on an upstream side with respect to a fuel flow toward the injection hole inlet; and an extending length (L) of the injection hole does not exceed three times a hole diameter (D) of the injection hole.

Abstract: Provided is a fuel injection valve which can be easily processed and can realize sufficient atomization while suppressing spreading of spray.

Abstract: Provided is a fuel injector that is capable of reducing penetration. The fuel injector of the present invention includes a valve body having a valve body side seat surface, a valve seat side seat surface that abuts on the valve body side seat surface, and an injection hole that is provided downstream of a position at which the valve body side seat surface abuts on the valve seat side seat surface. The valve body has a projection that is formed from the valve body side seat surface toward the injection hole, and the projection is formed to be smaller in a direction of fuel flow between seats than a radius of an upstream opening surface of the injection hole.

Abstract: Objects of the present invention are to provide a film for an agricultural greenhouse that can maintain a CO2 concentration necessary for the photosynthesis of plants even when ventilation is not performed and to provide an agricultural greenhouse using the film. The film for an agricultural greenhouse of the present invention is a cellulose film which contains a cellulose acylate resin and has an equilibrium moisture content of 4% to 8% at a temperature of 25° C., a relative humidity of 80% and a thickness of 60 to 200 ?m.

Abstract: Objects of the present invention are to provide a film for an agricultural greenhouse that can maintain a CO2 concentration necessary for the photosynthesis of plants even when ventilation is not performed and to provide an agricultural greenhouse using the film. The film for an agricultural greenhouse of the present invention is a cellulose film which contains a cellulose acylate resin and has an equilibrium moisture content of 4% to 8% at a temperature of 25° C., a relative humidity of 80% and a thickness of 60 to 200 ?m.

Abstract: Movement of a valve body in an unspecified direction due to a minute clearance existing between a valve body and a guide changes the flow of fuel flowing into injection holes every injection, thereby leading to variation in respective beams of spray from the injection holes and the flow rate of injection between the injection holes. Provided are a valve body that sits on or separates from a seat; a plurality of guides that slidably guide the valve body; and a plurality of flow channel portions each formed between each guide adjacent circumferentially. Then, among the plurality of flow channel portions, the cross-sectional area of the first flow channel portion on a horizontal plane orthogonal to the central axis of the valve body is smaller than each of the cross-sectional areas of the remaining flow channel portions on the horizontal plane.