Denso Corporation

Nippon Soken, Inc.

Other

Jtekt Corporation

So-ken Corporation

Toyota Technical Development Corporation

Toyota Jidosha Kabushiki Kaisha

Yasushi Mitsuishi

Masaharu Sakai

Kouji Matsunaga

Masanori Yasuda

Toshinori Ochiai

Shouichi Imahigashi

Syunsuke Ishiguro

Koji Ito

Akira Yamashita

Yutaka Hotta

Teruhiko Kameoka

Hideki Seki

Koji Nishi

Akira Nakano

Yoshiki Tada

Shota Yamamoto

Kazuhisa Sugiyama

Shoichi Imahigashi

Syoichi Imahigashi

Tohru Tanaka

A pressure reducing valve includes a body, an annular valve seat, a valve element, and a pressing mechanism configured to press the valve element. The pressing mechanism includes a plug provided downstream of the valve seat and having a plug hole, and a pin including a sliding portion and an upstream end, the sliding portion having a shaft shape and being inserted in the plug hole such that a gap is provided between the sliding portion and an inner peripheral surface of the plug hole, and the upstream end being provided upstream of the sliding portion so as to contact the valve element. A fitting length of the sliding portion with respect to the plug hole and the gap between the sliding portion and the plug hole satisfy 0.0005 L&#x3c;C&#x3c;0.00908 L, where L indicates the fitting length, and C indicates the gap.

Pressure reducing valve

A centrifugal blower provided with a spiral shaped scroll chamber where a bottom part of the scroll chamber gradually expands downward in the axial direction of the fan well along with expansion of the spiral and where a flow area gradually expands toward an air outlet from a spiral start part of the casing, the centrifugal blower having an initial slant angle &#x3b8;at the spiral start part of the bottom part of the scroll chamber of a range of angle of 5.2&#xb0; to 27.5&#xb0; or setting a backflow prevention rib at the fan outlet.

Centrifugal blower

A centrifugal multiblade fan includes a rotatable shaft, blades, a side shroud, and a main shroud. A front edge has a shape inclined radially outward in a direction from the main shroud toward the side shroud. When viewed from an axial direction, a corner part on a positive pressure surface-side is located on a tangential line of a positive pressure surface reference curve at a positive pressure surface side reference corner part, and when viewed from the axial direction, a curvature radius of a negative pressure surface becomes larger in a direction from the side shroud toward the main shroud.

Centrifugal multiblade fan

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.

Each of blades of a multi-blade centrifugal blower is provided with a taper portion, which is arranged at an inside periphery at least at the side of one rotation-shaft-direction end of the blade and tapers from the side of other rotation-shaft-direction end of the blade toward the side of the one rotation-shaft-direction end. The taper portion is positioned at a rotation-direction front side with respect to a back portion disposed at the side of the other rotation-shaft-direction end of the blade. Each of inlet angles throughout the taper portion is set in a range from 55&#xb0; to 74&#xb0;. Therefore, air flowing speed at an outlet of an impeller wheel is uniformed throughout the blade width. Work capacity and efficiency of the impeller wheel are increased, while noise is reduced.

Multi-blade centrifugal blower

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.

Centrifugal ventilator fan

In a centrifugal type blower unit, a diameter of an air suction port is set to be larger than a minimum inner diameter of a centrifugal fan, and a slanting portion is formed in each blade of the centrifugal fan at a side of the air suction port so that an inner radius dimension of the centrifugal fan is increased toward the air suction port. Therefore, it can prevent sub-flow air which is sucked into the centrifugal fan from an end side of the blades in an axial direction from interfering with main-flow air which is sucked into the centrifugal fan from an inner radius side of the blades. Thus, the blower unit can reduce second noise generated therefrom without greatly reducing air-blowing capacity.

Centrifugal type blower unit

Growing community of inventors

Anjo, Japan

Yasushi Mitsuishi