新一 下出

Bio: 新一 下出 is an academic researcher. The author has contributed to research in topics: Impeller & Centrifugal fan. The author has an hindex of 4, co-authored 9 publications receiving 81 citations.

Outdoor machine for air conditioner

Abstract: PROBLEM TO BE SOLVED: To make compact and silent an outdoor machine for an air conditioner which uses the air blowing-out surface of an axial fan installed to the upper section of an enclosure as its upper surface by providing a corner guide to at least one of the void sections in the corner sections formed of the front-face plate, roof plate, and one side-face plate which is adjacent to the front-face plate SOLUTION: A top-flow type outdoor machine 1 is provided with air supplying openings on its side-face sides and a heat exchanger 8 on its back side The machine 1 is also provided with a compressor 9, an accumulator 10, an axial fan, a bell mouth 12, etc, and a heat-exchanged wind exhausted front the fan 11 is discharged upward after passing through an exhaust pipe 7 and a guard net 16 In the machine 1, a corner guide 18a is provided to the void of each corner section formed of the front-face plate 2, side-face plate, roof plate 6, and bell mouth of the machine 1 Therefore, the outdoor machine 1 can be operated silently, because the heat-exchanged wind sucked from the heat exchanger 8 is prevented front staying in the voids of the corner sections and, at the same time, the efficiency deterioration of the fan 11 caused by uneven flows in the circumferential direction can be suppressed

Outdoor unit for air conditioner

Abstract: PROBLEM TO BE SOLVED: To decrease channel resistance by providing a motor supporting plate for supporting a fan comprising a supply/suction fan and a drive motor for fan between the bottom plate of a housing and the drive motor for fan thereby halving the area of the motor supporting plate when viewed from the front side of an outdoor unit SOLUTION: A motor supporting plate 1 comprises a pair of main plates 2a, 2b and an auxiliary plate 3 wherein the fixing legs 6 of a drive motor 5 for fan are supported by the main plates 2a, 2b, at the upper ends thereof, and fixed to a bottom plate 7 by means of an auxiliary plate 3 A heat exchanger 8 is disposed on the back face side of the bottom plate 7 The motor supporting plate 1 is placed between the drive motor 5 for fan and the bottom plate 7 and not placed between the drive motor 5 and a top plate 10 A specified space is thereby ensured at the upper half in the housing defined by the bottom plate 7, a front plate 9, the top plate 10, and the like, and channel resistance is decreased by halving the occupation area of the motor supporting plate 1 when viewed from the front side of an outdoor unit

Turbo fan and device mounted turbo fan

Abstract: PURPOSE:To uniform the speed distribution of air impeller output so as to reduce blast noise without cost increase by making the rate of local pressure rise at the impeller outlet large on the shroud side. CONSTITUTION:A turbo fan includes an impeller formed of an approximately disc like boss 3 provided with a motor driving shaft fitting hole, an annular hub 4 extended at the outer periphery of the boss 3, blades 5 planted on one face of the boss 3 spirally around the hole, and a shroud 6 opposed to the boss 3 with the blades placed in between. From a center axis to a specified distance R position, the cross section of the blade 5 on the plane vertical to the center axis is placed forward in the rotating direction as it approaches the center part of the impeller and shows spiral shape proceeding to the center axis almost from the outer peripheral part of the impeller, and a part close to the outer periphery of the impeller from the specified distance R position is bent so as to vertically approach the outer peripheral edge of the impeller. Accordingly, the outlet pressure of air flow rises locally so as to obtain the large air quantity.

Centrifugal fan and manufacture thereof

Abstract: PURPOSE: To provide a thinned, noise-reduced centrifugal fan at reduced cost that provides a large quantity of air, for use in an air conditioner, air-cooled electronic equipment or an electric motor. CONSTITUTION: The bore of a side plate 3 is smaller than the outside diameter of a core plate 1 and a plurality of main vanes 2 are disposed at almost equal intervals on the core plate 1 and a plurality of auxiliary vanes 4 are mounted at almost equal intervals on that side of the side plate 3 which is opposite to the main vanes 2. The shapes of the main vane 2 and the auxiliary vane 4 are determined so that the main vane 2 and the auxiliary vane 4 are axially passed through respective trimming dies used in the manufacture of the main and auxiliary vanes. Therefore the centrifugal fan can provide low noise, high pressure and a large quantity of air as compared to conventional centrifugal and propeller fans and can be integrally molded and is therefore available at reduced cost. COPYRIGHT: (C)1994,JPO&Japio

Impeller for blower

Abstract: PROBLEM TO BE SOLVED: To uniformize the distribution of speeds by inclining a line of intersection of a cylindrical surface around the center of an impeller and a pressure surface (negative pressure surface) of a vane in relation to a rotary shaft, and forming an angle between the pressure surface (negative pressure surface) of the vane and the radial direction in the line of intersection nearly equal over the whole in the height direction. SOLUTION: In a blower, in which a suction guide 9 is inserted into a suction part of an impeller 5 and the impeller 5 is driven for rotation by a motor 4, an angle between a tangent of a pressure surface of a vane and the radial direction at a position, in which a shroud side A-A cross section and a boss side B-B cross section and a cylindrical surface at an optional radius (r) from the center of rotation intersect each other, is set nearly equal to each other in a cylindrical surface having a radius (r). An E-E cross section of the vane in the cylindrical surface having the radius (r) is set at a nearly constant angle of inclination in relation to a rotary shaft of the impeller. With this structure, peeling of a flow at a vane inlet shroud side is restrained by the rotation of the impeller 5, and the distribution of speed is uniformized so as to improve the performance and lower the generation of noise.

Outdoor unit of air conditioner

Abstract: An outdoor unit of an air conditioner is provided. The outdoor unit includes a base assembly defining a lower exterior of the outdoor unit and supporting a plurality of parts, left and right panels that are provided on the base assembly to define left and right exteriors of the outdoor unit, a pair of top panels that are provided between upper ends of the left and right panels to define a top exterior of the outdoor unit, a blower assembly including a blower fan generating air current and a motor providing a torque to the blower fan, a frame assembly supporting the blower assembly and including a pair of transverse supports interconnecting the left and right panels and a motor mount disposed between the pair of transverse supports to support the motor, and a shroud enclosing the blower fan and the motor and guiding airflow generated by the blower fan. The motor mount is received to an inside of the shroud.

Centrifugal ventilator fan

Abstract: A centrifugal ventilator fan, which has improved fan performance and lower noise. A first outlet angle, on an upstream end of the fan, is less than a second outlet angle. Additionally, the first outlet angle is equal to zero degrees or greater and five degrees or less, while the second outlet angle is equal to thirty degrees or greater and forty five degrees or less. Furthermore, a first inlet angle, on an upstream end, is greater than a second inlet angle, on the opposite end. The first inlet angle is equal to sixty-five degrees or greater and ninety degrees or less, and the second inlet angle is equal to fifty-five degrees or more and seventy-five degrees or less.

Indoor unit of air-conditioning apparatus and air-conditioning apparatus

Abstract: An indoor unit (100) includes a casing (1) having a suction port (2) formed on an upper portion and a blow-out port (3) on a lower side of a front surface portion, an axial-flow or mixed-flow fan (20) provided on the downstream side of the suction port (2) in the casing (1), and a heat exchanger (50) provided in the casing (1) at a position on the downstream side of the fan (20) and on the upstream side of the blow-out port (3). The heat exchanger (50) includes a plurality of fins (56) arranged side by side with predetermined gaps therebetween and a plurality of heat-transfer tubes (57) penetrating through the plurality of fins (56). The heat exchanger is configured in such a manner that the air-flow resistance of an area facing the outer peripheral side of the fan (20) is larger than the air-flow resistance of an area facing a center portion of the fan (20).

Heat-dissipating device

Abstract: A heat-dissipating device includes a housing having an air inlet and an air outlet, and a blade structure disposed in the housing and having a hub and a plurality of rotor blades. The housing has an inwardly extending sidewall to define an accelerating airflow passage between the sidewall, the hub and the rotor blades for effectively increasing the airflow pressure and stabilizing the discharged airflow.

Multi-blade centrifugal fan and air conditioner employing the same

Abstract: In a multi-blade centrifugal fan in which an impeller is provided in a scroll casing in a freely rotatable manner, the scroll casing is provided with an axially expanded portion that forms an air channel at a bottom surface thereof which is expanded in a rotation-axis direction at a radially outer side of an annular flange portion which supports the impeller; and is provided, in a region of an outlet between a tongue portion and a spiral-end portion of the scroll casing in the axially expanded portion, with a protrusion that protrudes radially outward from a radially inner side surface by a predetermined amount so as to directly face an airflow in a circumferential direction.