摘要:
A centrifugal multiblade fan according to the present invention sucks air from one end side of an axial direction of a rotation axis to a radial inside, and blows the air to a radial outside. The centrifugal multiblade fan includes a plurality of blades located around the rotation axis. Each blade has a leading edge positioned at the radial inside, and a trailing edge positioned at a radial outside. The leading edge of each blade has an edge shape with a radius of curvature of 0.2 mm or less, for example.
摘要:
A centrifugal blower having a fan including a blade. A scroll casing houses the fan and has a first axial wall portion, a second axial wall portion, and a side wall extending between the first and second axial wall portions. The scroll casing includes a suction port in the first axial wall portion. The scroll casing also defines a scroll start portion and a scroll finish portion. The scroll casing has a scroll radius measured transverse to the rotation axis that changes from the scroll start portion to the scroll finish portion. Also, a maximum radius of the scroll radius is closer to the second axial wall portion than the first axial wall portion.
摘要:
A centrifugal blower having a fan including a blade. A scroll casing houses the fan and has a first axial wall portion, a second axial wall portion, and a side wall extending between the first and second axial wall portions. The scroll casing includes a suction port in the first axial wall portion. The scroll casing also defines a scroll start portion and a scroll finish portion. The scroll casing has a scroll radius measured transverse to the rotation axis that changes from the scroll start portion to the scroll finish portion. Also, a maximum radius of the scroll radius is closer to the second axial wall portion than the first axial wall portion.
摘要:
A centrifugal multiblade fan according to the present invention sucks air from one end side of an axial direction of a rotation axis to a radial inside, and blows the air to a radial outside. The centrifugal multiblade fan includes a plurality of blades located around the rotation axis. Each blade has a leading edge positioned at the radial inside, and a trailing edge positioned at a radial outside. The leading edge of each blade has an edge shape with a radius of curvature of 0.2 mm or less, for example.
摘要:
An ear speaker device includes an electroacoustic transducer including a housing mounted at a predetermined position of listener's head, a speaker unit mounted on one surface in the housing, and positioned away from an entrance of the listener's external acoustic meatus for a predetermined distance when the housing is mounted on the listener's head, and a tubular duct extended so as to allow a sound generated by the housing in the inner space thereof to reach the vicinity of the entrance of the listener's external acoustic meatus, and a hole for emitting sound of the duct is oriented to the opposite direction with respect to the entrance of the external acoustic meatus; and a mounting part used for mounting the electroacoustic transducer on the listener's head in a manner that the predetermined distance is provided between the speaker unit and the entrance of the listener's external acoustic meatus.
摘要:
A speaker system includes a cabinet, a front baffle, a speaker unit, a rear baffle, and a fitting member fitted in the rear baffle. The front baffle includes a front duct segment extending backward from the rear thereof. The rear baffle includes an opening portion, a duct connecting portion, and a receiving portion having a semicircular cross section. The receiving portion extends from the opening portion to the duct connecting portion while protruding backward. The opening portion, the receiving portion, and the duct connecting portion have a groove. The receiving portion has an engagement hole. The fitting member having a semicircular cross section is formed by double molding. The frame of the member is made of relatively rigid resin and the rim thereof is made of relatively flexible resin. The frame has an engagement projection. The receiving portion and the fitting member constitute a sealed rear duct segment.
摘要:
An air-outlet mode selecting device includes first and second rotary doors. Each of the first and second rotary doors has rotary shafts separated from each other in an axial direction of the rotary shafts, an outer peripheral door surface that is provided at a position separated radial outward from the center line of the rotary shafts and is turned with the rotary shafts, and left and right side plates for connecting both ends in the axial direction of the outer peripheral surface and the rotary shafts. One of the first and second rotary doors opens and closes a specified opening among three openings and other rotary door opens and closes the remaining two openings among the three openings. Accordingly, door operation force and air flow resistance can be effectively reduced, and the size of the air-outlet mode selecting device can be effectively reduced.
摘要:
When an electrode component is inserted into a through hole from one side and then rotated, parts of a conductive film are cut by a cutting blade. Another electrode component including a chip component whose one terminal is connected to an electrode of this electrode component is inserted into the through hole from the other side. When compression bonding is applied to the both electrode components so as to be joined together, an electrode of the former electrode component and the electrode of the latter electrode component are spread within the through hole with the pressure. The spread electrode of the former electrode component contacts a portion of the conductive film that is electrically connected to a front surface wiring, and the spread electrode of the latter electrode component contacts another portion of the conductive film that is electrically connected to a back surface wiring.
摘要:
An apparatus for supplying a semiconductor process gas charged in a large-capacity gas vessel to a plant where the gas is used, after reduction of the pressure of the gas. The gas cylinder 21 is composed essentially of a cylindrical portion 22 and hemispherical portions 23 and 24 formed at the ends of the cylindrical portion respectively. The gas cylinder 21 has a gas charge port 26 at one hemispherical portion and a gas discharge port 27 at the other hemispherical portion both of which opening in alignment with the axis 25 of the cylindrical portion 22. A charge valve 28 and a gas discharge unit 29 having at least a gas vessel valve 30 and a pressure reducing valve 32 are connected to the gas charge port and the gas discharge port respectively. The gas cylinder 21 is housed together with the charge valve 28 and the gas discharge unit 29 in a container 36.
摘要:
A loudspeaker apparatus in which sound from a loudspeaker is emitted from a top surface of a loudspeaker cabinet, wherein the top surface is slanted obliquely backward and in which a sound reflecting panel is mounted such that that the panel can swing on the rear plate of the loudspeaker cabinet, so that the emitted sound is reflected by the panel toward the listener.